JP6359191B2 - Method for producing fiber tow packaging - Google Patents

Description

The present invention also relates to the manufacture how the package of fiber tows (also referred to as a fiber bundle).

  Acetate fiber tows used in the manufacture of cigarette filters and the like are handled as a block-shaped packing body from the viewpoint of storage, transportation, and the like, laminated, compressed, wrapped with a packing material and fixed with a band.

  However, the acetate fiber tow used in the manufacture of the cigarette filter is crimped, and in the production of the package of the acetate fiber tow with the crimp applied, the crimp fiber laminated with the compression apparatus itself at the time of compression is used. There is a problem that the packing material, the band and the like are damaged due to the repulsion due to the crimped fiber tow. In addition, the surface of the packing body expands and rounds due to the repulsion of the crimped fiber tows, and in particular, the expansion on the top and bottom surfaces of the packing body makes it difficult to stack the packing bodies in the vertical direction. There is a problem of taking up space.

  Conventionally, in order to suppress expansion of a crimped fiber tow package, the pressure platen surface of the compression device is a convex or polyhedral projection type surface, and the fiber material is compressed and the surface is flat. Is proposed in Japanese translations of PCT publication No. 2008-539143 (Patent Document 1). Japanese Patent Laying-Open No. 2012-229062 (Patent Document 2) proposes a method of manufacturing a package by compressing a fiber material with a convex platen (platen).

Special table 2008-539143 gazette JP 2012-229062 A

  However, in the methods described in Patent Document 1 and Patent Document 2 described above, since the packing material is easily deformed during packing, a defective packing portion such as a tearing or cracking of the packing material is likely to occur. Moreover, it becomes easy to produce the expansion of a packaging defect location at the time of transport.

Therefore, the object of the present invention is to reduce the expansion of the surface of the packing body of the fiber tow when packing the fiber tow such as acetate fiber tow, particularly the fiber tow having been crimped, and torn or crack the packing material. can be difficult to generate, also to provide a manufacturing how the packaging material becomes possible stacking stacking packaging body in the vertical direction.

The gist of the present invention is as follows.
The method for manufacturing a package provided by the present invention includes laminating the fiber tows in a height direction by using a transfer chute that swings along one direction, and laminating the fiber tows in a height direction. The fiber tow is compressed along the height direction into a rectangular parallelepiped shape or a cubic shape using a platen arranged at least on the upper side and the lower side with respect to the fiber tow, and the fiber tow in a compressed state is packaged with a packing material And a manufacturing method for manufacturing a packaged body of the fiber tow by wrapping a plurality of fixed bands around the packaged fiber tow, wherein the platen is arranged to face the fiber tow and is a bottom view. Alternatively, the platen has a quadrilateral platen in a plan view, and the pressure platen of the platen is provided with a pressing protrusion projecting along a length direction that is a swinging direction of the transfer chute, Push The dimension in the length direction of the protrusion is set to the same dimension as the dimension in the length direction of the platen surface, and the dimension in the width direction of the pressing protrusion is 35% of the dimension in the width direction of the platen surface. Set to 100% or less, and the protrusion end surface of the pressing protrusion has an arcuate shape that curves in a convex shape toward the fiber toe when viewed in a cross section perpendicular to the length direction of the pressing protrusion. And the cross section of the pressing protrusion has the same shape in the entire length direction of the pressing protrusion, and the top end portion having the highest protrusion height in the pressing protrusion is the width of the platen surface. It is the manufacturing method of the package characterized by being arranged in the center position in a direction.
The width direction is a direction perpendicular to the length direction in a horizontal plane. The protrusion end surface of the pressing protrusion is an end surface facing the fiber tow of the pressing protrusion.

In the manufacturing method of the present invention, it is preferable that the arc-shaped protrusion end surface of the pressing protrusion is formed into a curved surface having a radius of curvature of 1000 mm to 2500 mm.
Moreover, it is preferable that at least one pair of auxiliary protrusions parallel to the pressing protrusions are arranged on the outer surface of the pressing plate in the width direction of the pressing protrusions.

Another method of manufacturing a package provided by the present invention is to stack the fiber tows in a height direction by using a transfer chute that swings along one direction to transfer the fiber toes into a transfer container, The fiber tow is compressed along the height direction into a rectangular parallelepiped shape or a cubic shape using a platen disposed on at least one of the upper and lower sides of the fiber tow, and the compressed fiber tow is packed into a packing material. A manufacturing method for manufacturing a packaged body of the fiber tow by wrapping the packaged fiber tow with a plurality of fixed bands, wherein the platen is arranged facing the fiber tow A pressure platen surface having a quadrangular shape in a bottom view or a plan view is provided, and a pressure protrusion portion is provided on the platen surface of the platen so as to protrude along a length direction that is a swinging direction of the transfer chute. ,Previous Shape when viewed pressing protrusion from the length direction and shape when viewed the pressing protrusion in the width direction, respectively, the projection-side base is exhibited shorter trapezoidal than the proximal end side base, the pressing The protrusion top end surface of the protrusion has a rectangular shape in a bottom view or a plan view, and when the pressing protrusion is viewed from the length direction, the dimension in the width direction of the protrusion side of the trapezoid is the width of the platen surface. It is set to 40% or more and 65% or less of the dimension in the width direction, and when the pressing protrusion is viewed from the width direction, the dimension in the length direction of the protrusion side of the trapezoid is the length direction of the platen surface. It is set to 40% or more and 100% or less of the dimension in this, The manufacturing method of the package characterized by the above-mentioned.

In the manufacturing method of the present invention according to the two forms as described above, the position of the pressing protrusion from the ridge line portion is based on the position of the ridge line portion where the platen surface and the side surface of the platen intersect in the platen. The dimension in the height direction is preferably set to 50 mm or more and 100 mm or less.

  Further, when the fiber tow is compressed using the platen, it is preferable that the compression time by the platen is set to 1 minute or more and 10 minutes or less, and the pressure by the platen is set to 12 MPa or more and 25 MPa or less.

  Further, the platen includes two or more and four or less first band insertion grooves provided in the platen surface along the length direction, and four or more provided in the platen surface along the width direction. Preferably, the first band insertion groove and the second band insertion groove have a groove width of 18 mm or more and 35 mm or less.

Next, in the package provided by the present invention, a fiber tow is transferred into a transfer container using a transfer chute that swings along one direction and stacked in the height direction. A packing body of fiber tows that is compressed along a height direction in a rectangular parallelepiped shape or a cubic shape, and the fiber tow in a compressed state is packaged by a packing material and tightened by a plurality of fixing bands, In the central region in the height direction of the package, the hardness of the fiber tow disposed at one end in the length direction, which is the swinging direction of the transfer chute, and the fiber tow disposed in the center in the length direction The fiber tow packing body is characterized in that the variation between the hardness of the fiber tow and the hardness of the fiber tow disposed at the other end in the length direction is 15% or less.
Further, another package provided by the present invention includes a fiber chute that is swung into a transfer container using a transfer chute that swings along one direction, and is stacked in the height direction. Is a packing body of fiber tow formed by being compressed along a height direction in a rectangular parallelepiped shape or a cube shape, and the compressed fiber tow is wrapped with a packing material and tightened by a plurality of fixing bands, In the central region in the height direction of the packing body, the hardness of the fiber tow disposed at one end portion in the length direction, which is the swinging direction of the transfer chute, and the fiber disposed in the center portion in the length direction The variation between the hardness of the tow and the hardness of the fiber tow disposed at the other end in the length direction is 15% or less, and at least one of the upper surface portion or the bottom surface portion of the packing body has a length direction. Arranged along It is package of fiber tows characterized by being formed of at least two stripe-shaped recess.

In the present invention, the density of the packing body, it is preferably not more than 300 kg / ^{m 3} or more 500 kg / ^{m 3.}
Moreover, it is preferable that the dimension in the length direction of the said package, the dimension in the width direction, and the dimension in a height direction are 800 mm or more and 1500 mm or less, respectively.

Furthermore, it is preferable that 2 or more and 4 or less fixed bands are wound around the packaging body along the length direction, and 4 or more and 12 or less fixed bands are wound along the width direction. .

  The fiber tow package manufactured according to the present invention can suppress expansion due to internal repulsion of the fiber tow. For this reason, the stability when the packing bodies are stacked in multiple stages in the vertical direction is good, and the breakage and cracking of the packing material due to the aging of the packing bodies can be effectively suppressed. Furthermore, in the fiber tow packing body according to the present invention, in the central region in the height direction of the packing body, the hardness of the fiber tow disposed at one end portion in the length direction and the fibers disposed in the center portion in the length direction. The variation between the hardness of the tow and the hardness of the fiber tow disposed at the other end in the length direction is 15% or less. Thereby, since the dispersion | variation in the tension | tensile_strength of the fiber tow at the time of pulling up a fiber tow from a package body decreases, the process passability of a fiber tow can be stabilized.

In the present invention, it is a schematic explanatory view for schematically explaining a process of transferring and stacking fiber tows into a transfer container by a transfer chute. It is a front view which shows typically the platen used for the 1st Embodiment of this invention. It is a side view which shows the same pressure plate | board typically. It is a perspective view which shows the package body of the fiber tow of this invention. It is an enlarged front view which expands and shows typically the half of the width direction in the upper surface part of the packing object manufactured in a 1st embodiment. It is a front view which shows typically the platen used for the 2nd Embodiment of this invention. It is a side view which shows the same pressure plate | board typically. It is an enlarged front view which expands and shows typically the half of the width direction in the upper surface part of the packing object manufactured in a 2nd embodiment. It is a front view which shows typically the platen used for the 3rd Embodiment of this invention. It is a side view which shows the same pressure plate | board typically. It is an enlarged front view which expands and shows typically the half of the width direction in the upper surface part of the packing object manufactured in a 3rd embodiment. It is a front view which shows typically the platen used for the 4th Embodiment of this invention. It is a side view which shows the same pressure plate | board typically. It is a front view which shows typically the platen used for the comparative example 1. FIG. It is a side view which shows the same pressure plate | board typically. It is a front view which shows typically the platen used for the comparative example 2. FIG. It is a side view which shows the same pressure plate | board typically.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of the invention will be described in detail with reference to the drawings. The present invention is not limited to the embodiments described below, and various modifications can be made as long as it has substantially the same configuration as the present invention and has the same effects. Is possible.

  The method for producing a fiber tow packing body according to the present invention includes laminating fiber tows in a transfer container using a transfer chute that swings along one direction, thereby stacking the fiber tows in the height direction, and stacking fibers. The fiber tow is compressed along the height direction into a rectangular parallelepiped shape or a cubic shape using a platen arranged at least one of the upper and lower sides with respect to the tow, and the compressed fiber tow is wrapped with a packing material and packaged. A manufacturing method for manufacturing a packaged body of fiber tow by hanging a plurality of fixed bands around the fiber tow, and using the following platen as a platen for compressing the fiber tow.

  That is, the platen used in the present invention has a platen surface that is arranged opposite to the fiber tows and has a quadrilateral shape in a bottom view or a plan view of the platen. On the platen surface of the platen, pressing protrusions are provided along the length direction so as to bulge toward the fiber tows. The size in the length direction of the pressing projection of the platen is set to the same size as the size in the length direction of the platen surface of the platen, and the size in the width direction of the pressing projection is the size in the width direction of the platen surface. 35% or more and 100% or less. The protrusion end surface of the pressing protrusion of the platen has an arc shape that curves in a convex shape toward the fiber toe when viewed in a cross section orthogonal to the length direction of the pressing protrusion, and the pressing protrusion of the pressing protrusion The cross section exhibits the same shape over the entire length of the pressing protrusion. The top end portion having the highest protrusion height in the pressing protrusion portion of the platen is arranged at the center position in the width direction of the platen surface.

  Here, the fiber tow is a bundle of hundreds to tens of thousands of single fibers that are continuous for several hundreds of meters or more. In the present invention, the type of fiber forming the fiber tow is not particularly limited, and acrylic fiber, acetate fiber, polyester fiber, polyamide fiber, polyolefin fiber, and the like can be used. In particular, the present invention is more effectively applied when an acetate fiber tow is packed to produce a package. In addition, the fiber tow packed in the present invention may be a fiber tow to which crimps are not applied or a fiber tow to which crimps are applied.

  In the method for producing a fiber tow package according to the present invention, first, a transfer process of the fiber tow 1 is performed using a tow transfer device 40 as shown in FIG. The tow transfer device 40 includes a pair of front and rear rolls 41, a transfer chute 42 disposed below the roll 41, and a transfer container 44 disposed below the transfer chute 42.

  In this transfer step, the transfer container 44 into which the fiber tow 1 is transferred and accommodated has a rectangular parallelepiped shape or a cubic shape with an upper opening corresponding to the shape of the package to be manufactured. In this case, the transfer container 44 has a rectangular parallelepiped shape that opens upward and is longer in the front-rear direction (length direction) than in the left-right direction (width direction).

  The transfer chute 42 is formed so that the fiber tow 1 supplied through the upper roll 41 can be inserted into the inside and sent out from below, and one rotating chute 42 is provided around the rotation shaft provided at the upper end. It is arranged so as to be swingable at a constant cycle along the direction. In the present invention, the swinging direction of the transfer chute 42 is defined as the front-rear direction, and this swinging direction (front-rear direction 51 in FIG. 1) is the front-rear direction and length direction of the platen described later, and the package described later. This is the same direction as the longitudinal direction and the length direction.

  The transfer chute 42 and the roll 41 above the transfer chute 42 can be reciprocated at a constant cycle in a direction orthogonal to the swing direction 51. In the present invention, the reciprocating direction of the roll 41 and the transfer chute 42 is defined as a left-right direction 52. The left-right direction 52 in the toe transfer device 40 includes the left-right direction and width direction of the platen described later, and the left-right direction of the package described later. The direction is the same as the direction and the width direction.

  In the transfer step of the present invention, the fiber tow 1 is moved from the tow outlet opening provided at the lower end of the transfer chute 42 while swinging the transfer chute 42 of the tow transfer device 40 as described above along the front-rear direction 51. It is sent out (swinged down) into the transfer container 44. At the same time, the pair of front and rear rolls 41 and the transfer chute 42 are reciprocated in the left-right direction 52. As a result, the fiber tow 1 is transferred into the transfer container 44 while being slightly shifted in the left-right direction with respect to the transfer container 44 while being folded back and forth in the vicinity of the front wall portion and the rear wall portion of the transfer container 44. It is. Moreover, it is also possible to push back from the front as needed.

  As a result, the fiber tow 1 is gradually stacked in the height direction from the bottom surface of the transfer container 44 while being folded in a zigzag shape, and is accommodated (filled) in the transfer container 44. Thereby, a laminated body of fiber tows 1 having a rectangular parallelepiped shape or a cubic shape is formed in the transfer container 44. That is, the laminated body of the fiber tows 1 includes a rectangular front surface portion on which one folded end portion of the fiber tow 1 is disposed, and a rectangular rear surface portion on which the other folded end portion of the fiber tow 1 is disposed. A rectangular bottom surface portion that is in contact with the bottom surface of the transfer container 44 and is orthogonal to the height direction (stacking direction of the fiber tows 1) and an orthogonal direction to the height direction on the opposite side of the bottom surface portion. It has the shape of a hexahedron surrounded by a rectangular upper surface part and right and left rectangular side parts arranged in parallel with the swinging direction 51 of the transfer chute 42.

  Then, in this invention, the fiber tow laminated | stacked by the transfer process and having a fixed volume is compressed into a rectangular parallelepiped shape or a cube shape, for example using the platen distribute | arranged above (or the downward direction) of a fiber tow. Further, the fiber tow is packed with a packing material in a state compressed with a platen, and then a plurality of fixing bands are wound around the fiber tow in a compressed state and packed with the packing material. Thereby, the shape of the packaged fiber tow is fixed and the package of fiber tow is formed.

  Here, when the laminated fiber tows are compressed using, for example, a platen having a flat platen surface (for example, a platen 60a of Comparative Example 1 described later), the fiber tows are added to the fiber tows after being tightened with a fixing band. When the applied pressure is released, the fiber tow expands due to the repulsive force of the fiber tows returning to the original laminated state, and the surface of the packing body in the compression direction (for example, the upper surface of the packing body) swells. Due to the swelling of the fiber tows, the surface of the packing body in the compression direction becomes a curved surface so that the central portion of the surface rises high. For this reason, for example, when such a some package is piled up along the perpendicular direction (gravity direction), the overlapping state of a package will become unstable.

  On the other hand, in the method for manufacturing a fiber tow package according to the present invention, a platen (for example, the platen 10a of Example 1 to the platen 10d of Example 4) having a pressing protrusion having a predetermined shape is used. By manufacturing the packaging body 30 as shown in FIG. 4, the swelling of the surface portion (particularly the upper surface portion) of each packaging body 30 to be manufactured is compared with the case of using a pressure plate with a flat platen surface as in the prior art. Less (smaller). Thereby, when the manufactured packaging bodies 30 are stacked, the overlapping state of the stacked packaging bodies 30 can be stabilized.

  Here, the platen is also referred to as a platen, and is a member having a surface (platen surface) that presses the fiber tow when compressing the laminated fiber tows. The platen is a main part of a compression device that compresses a bulky fiber material to form a rectangular parallelepiped or a cube.

  First, the platen 10a according to the first embodiment of the present invention will be described with reference to FIGS. The platen 10a according to the first embodiment is used as a step of compressing the fiber tows stacked in the transfer step, and is formed as an upper platen or a lower platen disposed at at least one of an upper position and a lower position of the fiber tow. Is done. In particular, in the first embodiment, the platen 10a is disposed above the fiber tow to be compressed, and a packing (not shown) for packing the compressed fiber tow on a platen surface 11a to be described later of the platen 10a. The material is attached using a hook or the like (not shown).

  In this case, below the upper platen 10a, although not shown, a tow placement portion on which the upper surface is formed flat and a laminated fiber tow is placed is disposed. A packing material is also attached to the upper surface of the tow mounting portion. A fiber tow (a laminated body of fiber tows) stacked in the transfer container 44 in the above transfer process is placed on the tow mounting portion, and then the upper platen 10a disposed above the fiber tows is lowered. As a result, the upper platen 10a is pressed against the fiber tow from above, and the fiber tow is compressed along the height direction between the platen 10a and the tow placement portion.

  The platen 10a has a platen surface (lower surface) 11a arranged to face the fiber tow, and the platen surface 11a of the platen 10a is viewed from the fiber toe side (downward) to be compressed. When viewed from the bottom (bottom view), it is formed to have a quadrilateral shape having two sides parallel to the length direction and two sides parallel to the width direction. In this case, the size of the platen surface 11a of the platen 10a is appropriately set according to the target size of the package 30 to be manufactured. For example, when the target size of the package 30 is set to a height dimension of 1050 mm, a width dimension of 1060 mm, and a length dimension (depth) of 1270 mm as described later, the dimension W1 in the width direction of the platen surface 11a is set to 980 mm. The dimension L1 in the length direction is preferably 1230 mm (hereinafter, the dimension in the width direction is abbreviated as the width dimension, and the dimension in the length direction is abbreviated as the length dimension).

  Further, on the platen surface 11a of the platen 10a, a pressing projection 12a is projected along a length direction in which the direction with respect to the fiber tow is the same as the swinging direction of the transfer chute 42 (front-rear direction 51). . The top end portion having the largest protrusion height in the pressing protrusion portion 12a is arranged at the center position in the width direction of the platen surface 11a. In this case, the protrusion end face (protrusion top end face) 13a of the pressing protrusion 12a has an arcuate shape that curves in a convex shape toward the fiber toe when viewed in a cross section orthogonal to the length direction of the pressing protrusion 12a. Presents a curve. When the platen 10a is viewed from the left and right sides (see FIG. 3), the length dimension L2 of the pressing projection 12a is set to be the same as the length dimension L1 of the platen surface 11a. Furthermore, the cross section orthogonal to the length direction of the press protrusion part 12a exhibits the same shape (constant shape) in the whole length direction of the press protrusion part 12a.

  By providing such a pressing protrusion 12a on the platen surface 11a of the platen 10a, when the fiber tow (laminated body of fiber tows) is pressed from the upper surface side using the platen 10a, the platen surface 11a The pressing protrusion 12a applies a greater pressure to the center portion in the width direction of the fiber tow than to the left and right outer edges in the width direction. For this reason, the phenomenon in which the repulsive force of the fiber tow trying to return to the original laminated state is weakened is promoted at the center of the fiber tow compared to the outer edge.

  Further, by providing the pressing protrusion 12a as described above, the fiber disposed in the region in the vicinity of the upper surface of the laminated fiber tows and in the central portion in the width direction is pressed against the platen surface 11a by the pressing protrusion 12a. Can be pushed toward the outside of the left and right over the entire length direction, thereby reducing the fiber density in the central portion in the width direction of the fiber tow relative to the outside region in the width direction of the left and right. It is also possible to do. As a result, after packing the fiber tow and tightening with the fixing band 32 as will be described later, when the pressure applied to the fiber tow is released by the platen 10a, for example, pressing with a conventional platen having a flat platen surface It is easier to form the upper surface of the fiber tow on a substantially flat surface by reducing the swelling of the upper surface of the fiber tow.

  In other words, when the fiber tow is pressed with a conventional platen having a flat platen surface, the pressure difference applied to the central part and the outer edge of the fiber tow as in the present invention, or the central part in the width direction is arranged. It is considered that when the pressure is released from the fiber tow, the central portion in the width direction of the fiber tow easily swells.

  Accordingly, in consideration of the above-described action during compression of the fiber tow, the width dimension W2 of the pressing projection 12a provided on the platen surface 11a is set to 35% or more and 100% or less of the width dimension W1 of the platen surface 11a. In particular, in the case of the first embodiment, it is preferably set to 45% or more and 90% or less of the width dimension W1 of the platen surface 11a.

  In the platen 10a, the pressing protrusion 12a is formed so as to have the same cross-sectional shape over the entire length direction. Thus, when compressing the fiber tow, the pressing protrusion 12a is uniformly pressed over the entire length of the fiber tow laminate, so that the pressure applied to the center of the fiber tow and the width direction The movement in the left-right direction of the fiber arranged in the central portion of the fiber can be uniformly generated in the entire length direction. For this reason, when compressing and packing a fiber tow, it can be made hard to produce the hardness variation of a fiber tow in a length direction.

  Further, in the platen 10a, the top end portion having the largest protrusion height in the pressing protrusion 12a is arranged at the center position in the width direction of the platen surface 11a as described above. In other words, the top end portion having the largest protrusion height in the pressing protrusion 12a is at the center in the width direction with respect to the rectangular parallelepiped laminated body of fiber tows to be compressed (or with respect to the package 30 to be manufactured). It is arranged in the corresponding position.

  When the pressure applied to the compressed fiber tow is released, the central portion in the width direction of the rectangular parallelepiped fiber tow usually tends to swell larger. For this reason, it is easy to make the upper surface of a rectangular parallelepiped fiber toe flat by arranging the above-mentioned center part of press projection part 12a corresponding to the center part in the width direction of a fiber tow like this invention. can do.

  In other words, the higher the difference in height between the center part in the width direction of the fiber tow that is likely to swell and the outer edge part in the width direction of the fiber toe that is less likely to swell, the more the fiber in the shape of a rectangular parallelepiped The top surface of the tow can be made easier to flatten.

  Further, as described above, the pressing protrusion 12a of the platen 10a has a protrusion end surface 13a that exhibits an arcuate curve when a cross section perpendicular to the length direction is viewed. In this case, the arcuate curve on the protrusion end surface 13a may be a perfect arcuate curve or an elliptical arcuate curve. Since the protrusion end surface 13a of the pressing protrusion 12a is formed so as to exhibit an arcuate curve in the cross section as described above, when the fiber tow is compressed by the platen 10a through the packing material, the pressing protrusion 12a. It is possible to easily prevent problems such as the cutting of the fiber tow caused by the pressing, the breakage of the packing material, and the breakage such as cracks.

  In particular, when the projection end surface 13a exhibits a circular arc-shaped curve in a cross-sectional view, the projection end surface 13a is preferably formed to be a curved surface with a radius of curvature of 1000 mm to 2500 mm. By setting the radius of curvature of the protrusion end surface 13a to 1000 mm or more, cutting of the fiber tow, damage to the packing material, and the like can be further reduced. In addition, by setting the radius of curvature of the protrusion end surface 13a to 2500 mm or less, at least one of the upper surface and the bottom surface of the package 30 can be easily flattened. From such a viewpoint, the radius of curvature of the curved protrusion end surface 13a is preferably set to 1100 mm to 2000 mm, and more preferably set to 1200 mm to 1500 mm.

  The width dimension W2 of the pressing protrusion 12a is preferably 35% or more and 80% or less, and particularly preferably 40% or more and 70% or less of the width dimension of the package 30 to be manufactured. By making the width dimension W2 of the pressing protrusion 12a to be 35% or more, particularly 40% or more of the width dimension of the packaging body 30, the force for compressing the fiber tow at the pressing protrusion 12a is easily dispersed, and the fiber tow It becomes easy to prevent breakage and damage to the package 30. In addition, by making the width dimension W2 of the pressing projection 12a 80% or less of the width dimension of the packing body 30 and particularly 70% or less, the center part of the rectangular parallelepiped fiber tows can be effectively compressed, It becomes easy to uniformize the compression surface of the rectangular parallelepiped fiber tow.

  Further, when the position of the ridge line portion 14a where the platen surface 11a and the side surface of the platen 10a intersect in the platen 10a is used as a reference of the height position (position in the height direction), the pressing protrusion from the ridge line portion 14a serving as the reference The dimension in the height direction (hereinafter abbreviated as height dimension) to the top end of the portion 12a is set to 10 mm or more and 100 mm or less. By making the above-mentioned height dimension of the pressing protrusion 12a 10 mm or more, it is possible to easily equalize the height position of the compression surface in the rectangular parallelepiped fiber tow by the compression effect of the pressing protrusion 12a, and to damage the packing material. Less. By making the above-described height dimension of the pressing protrusion 12a larger than 100 mm, the compression surface may be excessively dented and it may be difficult to make the entire compression surface uniform. From such a viewpoint, the above-described height dimension of the pressing protrusion 12a is preferably set to 20 mm to 70 mm, and more preferably set to 30 mm to 60 mm.

  Further, on the platen surface 11a of the platen 10a shown in FIGS. 2 and 3, a pair of left and right auxiliary protrusions 16 parallel to the pressing protrusions 12a are provided in the length direction outside the pressing protrusions 12a. It is provided along. In this case, the height dimension from the above-mentioned ridge line part 14a in the top end part of the auxiliary projection part 16 is smaller than the height dimension from the above-mentioned ridge line part 14a in the top end part of the pressing projection part 12a. Here, the top end of the pressing protrusion 12a and the top end of the auxiliary protrusion 16 refer to a portion of the pressing protrusion 12a and auxiliary protrusion 16 having the highest protrusion height. Here, the protrusion height can be said to be a height dimension from the height position of the ridge line portion 14a.

  Further, between the central pressing protrusion 12a and the left and right auxiliary protrusions 16, the height dimension from the above-described ridge line portion 14a in the platen 10a is lower than the top end of the pressing protrusion 12a, and the auxiliary protrusions A trough 17 that is lower than the top end of 16 is formed. In this case, the left and right troughs 17 extend along the length direction corresponding to the positions of the first band insertion grooves 19a that are recessed along the length direction to pass the fixed band 32 when banding. Is formed.

  By providing the left and right auxiliary projections 16 as described above in addition to the pressing projections 12a, the concave portions 31a having a concave shape are long on the left and right side edges on the upper surface of the package 30 to be manufactured. It is formed in a streak shape along the vertical direction (see FIG. 5). By forming such streak-like concave portions 31a on the left and right side edges of the upper surface of the packaging body 30, for example, when stacking a plurality of packaging bodies 30 along the vertical direction, the packaging bodies 30 are stably stacked. It becomes possible.

  In the case of the platen 10a shown in FIGS. 2 and 3, one auxiliary protrusion 16 is provided on each of the left and right outer sides of the pressing protrusion 12a. However, in the present invention, the number of auxiliary protrusions 16 is not limited. For example, it is possible to provide two or more auxiliary protrusions 16 on the left and right outer sides of the pressing protrusion 12a. In addition, it is preferable that the number of auxiliary protrusions 16 provided on the left and right outer sides of the pressing protrusion 12a is matched on the left side and the right side, but in the present invention, the number of auxiliary protrusions 16 provided on the left side of the pressing protrusion 12a The number of auxiliary protrusions 16 provided on the right side of the pressing protrusion 12a may be varied.

  In addition, when providing a plurality of rows of auxiliary projections 16 on the left and right outer sides of the pressing projections 12a as described above, the auxiliary projections 16 closer to the central pressing projections 12a are higher from the above-described ridge line portion in the platen 10a. It is preferable that the size is increased. Since the upper surface of the package 30 to be manufactured is likely to swell as it approaches the center portion in the width direction, by increasing the height dimension of the auxiliary projection portion 16 as it approaches the center pressing projection portion 12a as described above, The upper surface (compression surface) of the manufactured package 30 can be easily flattened. In this case, each auxiliary protrusion 16 is preferably formed so that the cross-sectional shape orthogonal to the length direction has a constant shape (the same shape) in the entire length direction.

  In the present invention, as will be described in a third embodiment (see FIGS. 9 and 10) described later and a fourth embodiment (see FIGS. 12 and 13), both the left and right sides of the pressing protrusion are described. It is also possible to form a platen without providing an auxiliary protrusion on the platen.

  Further, the platen 10a shown in FIGS. 2 and 3 has two first band insertion grooves 19a recessed in the platen surface 11a along the length direction, and recessed in the platen surface 11a along the width direction. And nine second band insertion grooves 19b. By providing the first band insertion groove 19a and the second band insertion groove 19b, a plurality of fixing bands 32 can be easily attached to the fiber tow while the fiber tow is compressed by the platen 10a. In addition, it can be stably hung and attached.

  The number of first band insertion grooves 19a formed in the platen surface 11a and the number of second band insertion grooves 19b formed in the platen surface 11a correspond to the number of bands wound around the packing body 30, for example, a rectangular parallelepiped fiber tow. When the number of the fixed bands 32 that hang around the packing body 30 changes due to the change in the size, the number of the first band insertion grooves 19a and the second band insertion grooves 19b formed is also changed according to the number of the fixed bands 32.

  For example, when the package 30 is manufactured with the target size as described above, the number of the first band insertion grooves 19a formed in the length direction is set to 2 or more and 4 or less, and the second band along the width direction. When the number of the insertion grooves 19b is 4 or more and 12 or less, when the plurality of fixing bands 32 are wound along the length direction and the width direction in the compressed state of the fiber tow, the shape of the fiber tow However, it is easy to form each surface of the rectangular parallelepiped flatly. Further, even when the platen 10a is raised to release the high compression state by the platen 10a, each surface of the rectangular parallelepiped is easily kept flat.

  Furthermore, from this point of view, depending on the packing density and the size of the packing body 30, the number and width of the fixed bands 32 that are wound around the fiber tows along the length direction with respect to one packing body 30. The total number of fixed bands 32 wound around the fiber tow along the direction (in other words, the total number of first band insertion grooves 19a and second band insertion grooves 19b formed on the platen 10a) ) Is preferably 15 or less, more preferably 8 or more and 12 or less.

  The first band insertion groove 19a and the second band insertion groove 19b each have a groove width of 18 mm or more and 35 mm or less. If the groove width is 18 mm or more, a high-strength fixing band 32 can be used. Moreover, if the said groove width is 35 mm or less, compression of a fiber tow can be made uneven and the damage of a packaging material can be prevented more effectively. From such a viewpoint, the groove widths of the first band insertion groove 19a and the second band insertion groove 19b are more preferably 20 mm or more and 25 mm or less.

  When performing the compression step of compressing the fiber tow (that is, the fiber tow laminate) laminated in the transfer step using the platen 10a as described above, the fiber tow laminate is placed on a tow placement portion (not shown). In this state, the platen 10a is lowered toward the laminated body of fiber tows. Thereby, the fiber tow is compressed along the height direction between the platen 10a and the tow placing portion.

At this time, for example, when the packing density of the fiber tow package to be manufactured is set to 300 kg / m ³ or more and 500 kg / m ³ or less, it is preferable to set the compression time by the platen 10 a to 1 minute or more and 10 minutes or less. When the compression time is 1 minute or longer, the compression effect by the pressing projection 12a provided on the platen surface 11a of the platen 10a and the compression effect by the pair of left and right auxiliary projections 16 are likely to be exhibited. Further, the longer the compression time, the more stable the compression effect by the platen 10a can be obtained. However, considering the production efficiency, the compression time is preferably 10 minutes or less. From such a viewpoint, it is more preferable to set the compression time to 2 minutes or more and 5 minutes or less.

  Moreover, when making the packing density of fiber tow into the said range, it is preferable to set the compression pressure by the platen 10a to 12 Mpa or more and 25 Mpa or less. When the compression pressure is 12 MPa or more, the compression effect by the pressing projection 12a and the pair of left and right auxiliary projections 16 of the platen 10a is likely to appear. If the compression pressure is 25 MPa or less, damage to the packing material can be reduced. From such a viewpoint, it is more preferable to set the compression pressure by the platen 10a to 14 MPa or more and 22 MPa or less.

  When the fiber tow is packed with the packing material under the compression state by the platen 10a, as described above, before the compression process is started, the packing material can be preliminarily attached to the tow mounting portion and the platen 10a. deep. And a packing material is expanded in the state which compressed the fiber tow with the platen 10a, and it covers and covers a rectangular parallelepiped fiber tow. In addition, in this invention, it is also possible to wrap and wrap a packing material around the front part, the rear part, and the side part of a rectangular parallelepiped fiber tow.

  In this case, the packaging material for wrapping the fiber tow is formed of a strong and flexible sheet material. For example, the packaging material is made of a member such as corrugated cardboard, a synthetic resin plate, a synthetic resin sheet, a synthetic resin film, a woven fabric, and paper. As an example, a corrugated cardboard provided with a resin film on the inside is preferably used.

  Subsequently, after packaging the rectangular parallelepiped fiber tow with the packing material, using the first band insertion groove 19a and the second band insertion groove 19b provided on the platen surface 11a of the platen 10a, Nine fixed bands 32 are hung in the width direction, and two fixed bands 32 are hung in the length direction. At this time, the fixing band 32 to be hung on the fiber tow is formed of a member such as a string which is elongated and can be fastened and tied. The fixing band 32 may be made of synthetic resin or metal.

  In this state compressed by the platen 10a, with respect to the rectangular parallelepiped fiber tow packed with the packing material, the plurality of fixed bands 32 are arranged in the length direction and the width direction from above the packing material while being compressed. The shape of the rectangular parallelepiped of the fiber tow can be held and fixed. Then, the platen 10a as shown in FIG.4 and FIG.5 can be manufactured by raising the platen 10a and releasing the compression state of a fiber tow.

  The packing body 30 manufactured according to the present invention is a fiber in which a fiber tow is compressed into a rectangular parallelepiped shape along the height direction, and the shape is fixed by being wrapped with a packing material and wrapped around a plurality of fixing bands 32. Hardness of the fiber tow disposed on one end portion (front end portion) in the length direction in the central region in the height direction of the packing body 30 (measurement of the packing body 30 shown in FIG. 4). The hardness of the fiber tow at the point 35a), the hardness of the fiber tow disposed at the center in the length direction (the hardness of the fiber tow at the measurement point 35b of the packaging body 30 shown in FIG. 4), and the other in the length direction. It is the package 30 in which the variation between the hardness of the fiber tow arranged at the end (rear end) (the hardness of the fiber tow at the measurement location 35c of the package 30 shown in FIG. 4) is 15% or less. . In this case, the fiber tow to be packed may be a fiber tow to which crimps are not applied as described above, or may be a fiber tow to which crimps are applied.

  Here, the central region in the height direction of the packaging body 30 means that the height dimension from the lower end position of the packaging body 30 is 33% or more with respect to the overall height dimension from the lower end position to the upper end position of the packaging body 30. The region is 66% or less, preferably 40% or more and 60% or less, and particularly preferably 45% or more and 55% or less. Moreover, the hardness of the fiber tow is the size when the packing material of the packing body 30 is removed and the hardness of the fiber tow is directly measured. The variation between the hardnesses of the fiber tows is a ratio obtained by dividing the maximum difference in hardness measured at the above-mentioned three points by the maximum hardness among these three points.

  In the packaging body 30 of the present invention as manufactured using the platen 10a according to the first embodiment as described above, the variation between the hardnesses of the fiber tows at the three points as described above is 15% or less. Thereby, the dispersion | variation in the tension | tensile_strength of the fiber tow at the time of pulling up a fiber tow decreases, and process passage property can be stabilized.

The fiber tow packing body 30 in the present invention is formed with a density of 300 kg / m ³ or more and 500 kg / m ³ or less. By having such a density, the quality of the fiber tow can be stably maintained, and good stability of the package 30 can be ensured. From such a viewpoint, the density of the package 30 is preferably 350 kg / m ³ or more and 450 kg / m ³ or less, and more preferably 380 kg / m ³ or more and 430 kg / m ³ or less.

  The length of each side of the packing body 30 of the fiber tow (that is, the height dimension, the width dimension, and the length dimension) is 800 mm or more and 1500 mm or less, respectively. This is preferable in terms of handling the package 30. In particular, the fiber tow packing body 30 manufactured by the above-described manufacturing method is formed such that the height dimension is 1050 mm, the width dimension is 1060 mm, and the length dimension (depth) is 1270 mm.

  In the fiber toe packing body 30 of the present invention, the fixing band 32 is placed on the front surface (front surface) and the back surface (rear surface) of the packing body 30 along the length direction (that is, the rectangular parallelepiped packing body 30). (Along the long side direction of the upper surface in FIG. 2), the number of the wires is multiplied by 2 or more and 4 or less. Further, four or more and twelve or less are arranged along the width direction (that is, along the short side direction of the upper surface of the rectangular parallelepiped packaging body 30) so that the fixing band 32 is hung on the left and right side surfaces of the packaging body 30. It is multiplied by the number of.

  In this case, as the number of the fixing bands 32 for tightening the packing body 30 increases, the surface of the packing body 30 becomes flat. However, in consideration of the ease of unpacking, the number of the fixing bands 32 in the entire packing body 30 (that is, The total of the number of the fixed bands 32 hung along the length direction and the number of the fixed bands 32 hung along the width direction) is 15 or less, preferably 8 or more and 12 or less. . For example, the packaging body 30 shown in FIG. 4 and FIG. 5 manufactured using the platen 10a according to the first embodiment includes two fixed bands 32 that are hung along the length direction, and a width direction. It is clamped by nine fixing bands 32 that are wound around.

  And the package 30 of the fiber tow manufactured using the platen 10a which concerns on 1st Embodiment as mentioned above is at least one of the upper surface part or bottom surface of the package 30 (in this case, an upper surface part). And a pair of left and right streaky recesses 31a formed along the length direction. Such a pair of left and right streak-like concave portions 31 a are provided on the left and right side edges of the upper surface portion (or bottom surface) of the packaging body 30 over the entire length direction of the packaging body 30. These left and right recesses 31a are formed by the left and right auxiliary projections 16 provided on the platen 10a pressing the fiber tows in the compression step described above, and the position of the pressed fibers being displaced in the width direction. Conceivable.

  The left and right streaky concave portions 31a as described above are continuous from one end portion (front end portion) in the length direction to the other end portion (rear end portion) in the length direction on the upper surface portion (or bottom surface portion) of the packing body 30. Is formed. Thereby, the upper surface part of the stacked lower packaging body 30 is easily deformed into a flat state, and the stacking of the packaging bodies 30 is easily stabilized.

  In the present invention, the number of the streaky recesses 31a formed on the left and right edge portions of the top surface (or bottom surface) of the package 30 is 2 or more, 6 or less, preferably 2 or more and 4 or less, particularly preferably 2. It is. Thereby, the upper surface part of the stacked lower packaging body 30 is easily deformed into a flat state, and the stacking is easily stabilized.

  When the upper surface portion of the package body 30 is viewed, as shown in FIG. 5, the deepest portion (bottom portion) of the streak-shaped recess 31 a formed on the upper surface portion of the package body 30 in the height direction of the package body 30. The height position (position in the height direction) is lower than the height position of the fixing band 32 that fastens the package body 30 along the length direction, and further, between the upper surface portion and the side surface portion of the package body 30. It becomes lower than the height position of the ridge line part 33 arranged in the.

  Since the height position in the deepest part (bottom part) of the line-shaped concave portion 31a is lower than the height position of the fixed band 32, when the plurality of packing bodies 30 are stacked in the vertical direction, The upper surface portion of the side packing body 30 is easily deformed into a flat state, and the stacking can be stabilized. Further, since the position of the fixing band 32 is not located at the deepest portion of the recess 31a (because the position of the fixing band 32 and the position of the deepest portion of the recess 31a are different from each other), the packing material is torn by the fixing band 32. And the contamination of the fiber tow packing body 30 can be prevented.

  In this case, the height dimension (interval in the height direction) H1 between the height position in the deepest part (bottom part) of the streak-shaped recess 31a and the height position of the fixed band 32 described above is 20 mm or more and 60 mm or less. It is preferable that it is 25 mm or more and 50 mm or less especially. If the distance H1 between these two height positions is 20 mm or more (especially 25 mm or more), damage to the packing material can be reduced, and if the distance H1 is 60 mm or less (particularly 50 mm or less), The form of the package 30 can be stabilized.

  The fiber tow packing body 30 of the present invention has three or more and seven or less inflating portions on the top surface (or bottom surface) of the packing body 30. Moreover, it is preferable that the height dimension (difference of the height position of an adjacent expansion part) between 1 mm or more and 40 mm or less is between the top end parts of the expansion part adjacent to each other. For example, in the case of the fiber tow packing body 30 manufactured using the platen 10 a according to the first embodiment, the upper surface portion of the packing body 30 extends in the length direction outside the left and right streaky recesses 31 a in the packing body 30. The left and right inflatable portions and a central inflatable portion provided along the length direction sandwiched between a pair of left and right streaky recesses 31a.

  As described above, the upper surface portion (or the bottom surface portion) of the packing body 30 has three or more and seven or less inflating portions, so that when the packing body 30 is stacked in the vertical direction, the lower side Since the number of places where the package 30 contacts and supports the upper package 30 increases, the stacking is easily stabilized. In addition, when the difference between the height positions of the adjacent inflating portions is 1 mm or more and 40 mm or less, when the plurality of packing bodies 30 are stacked in the vertical direction, the lower packing body 30 contacts the upper packing body 30. And support area increases. This makes it difficult for positional deviations between the packing bodies 30 to occur, and makes stacking more stable. From such a viewpoint, it is more preferable that the difference in height position between the inflating portions adjacent to each other on the upper surface portion (or the bottom surface portion) of the packing body 30 is 30 mm or less, particularly 20 mm or less.

  In addition, in the case of the expansion part provided in the upper surface part of the package 30 as shown in FIG. 5, for example, the height dimension H2 of the center expansion part in this invention cross | intersects the upper surface part and side part of the package 10. The relative dimension in the height direction from the height position of the ridge line part 33 to the height position of the highest apex part of the inflating part is referred to with reference to the height position of the ridge line part 33 to be performed.

  Next, a platen 10b according to a second embodiment of the present invention will be described with reference to FIGS. In the second embodiment and the third and fourth embodiments to be described later, the shape of the pressing protrusion arranged at the center of the platen surface of the platen is different from that in the first embodiment. For this reason, in the second to fourth embodiments, the pressing protrusions of each platen will be mainly described, and a portion having substantially the same configuration as that of the first embodiment described above or Explanation of members will be omitted by using the same reference numerals.

  On the platen surface 11b of the platen 10b according to the second embodiment, a pressing projection 12b is provided so as to protrude along the length direction in which the direction with respect to the fiber tow is the same as the swinging direction of the transfer chute 42. The pressure platen 10b is provided with one pressing protrusion 12b, but the auxiliary protrusion 16 disposed on the left and right outer sides of the pressing protrusion 12a as in the first embodiment is provided. Absent.

  The pressing projection 12b of the platen 10b is cut in a front view or a rear view (see the front view of FIG. 6) when the platen 10b is viewed from the length direction, and in a direction orthogonal to the length direction of the platen 10b. In cross-sectional view (transverse cross-sectional view), it has a trapezoidal shape. In particular, the trapezoidal shape of the pressing protrusion 12b in a front view or a cross-sectional view is such that the bottom side on the protrusion side (lower side) that contacts the fiber tow in the pressing protrusion 12b is in contact with the main body of the platen 10b in the pressing protrusion 12b. It is an isosceles trapezoid shorter than the bottom of the end side (upper side). The center position in the width direction of the pressing protrusion 12b is matched with the center position in the width direction of the platen 10b.

  In this case, the width dimension W3 of the projection side (lower side) bottom side of the trapezoidal shape of the pressing projection 12b is set to 40% or more and 65% or less of the width dimension W1 of the platen surface 11b of the platen 10b in front view or cross sectional view. Has been. Thereby, when compressing the fiber tow (laminated fiber tow) using the platen 10b, the pressure applied to the center part of the fiber tow by the pressing protrusion 12b in the left-right direction and the center part in the width direction When the fibers arranged on the plate are effectively urged to move in the left-right direction and the pressure applied by the platen 10b is released, the bulge of the upper surface of the fiber tow is reduced and the upper surface is easily formed flat.

  In front view or cross sectional view, the width dimension W4 of the base side (upper side) base of the trapezoid of the pressing protrusion 12b is preferably 50% or more and less than 100% of the width dimension W1 of the platen surface 11b of the platen 10b. It is set to 70% or more and 90% or less. As a result, the trapezoidal side (leg) in front view or cross-sectional view is inclined at an appropriate angle, so that when the fiber tow is compressed by the platen 10b, the fiber tow is cut due to the pressing of the pressing protrusion 12b. It is possible to easily prevent damage to the packaging material.

  The pressing projection 12b of the platen 10b is a side view (longitudinal section) cut in a direction perpendicular to the width direction of the platen 10b in a side view of the platen 10b viewed from the width direction (see the side view of FIG. 7). (View) has a trapezoidal shape. In particular, the trapezoidal shape of the pressing protrusion 12b in a side view or a longitudinal sectional view is an isosceles trapezoid in which the base on the protrusion side (lower side) is shorter than the base on the base end side (upper side). The center position of the pressing protrusion 12b in the length direction is matched with the center position of the platen 10b in the length direction.

  In this case, the length dimension L3 of the bottom side of the protrusion side (lower side) in the trapezoidal shape of the pressing protrusion 12b in a side view or a longitudinal sectional view is 40% or more and less than 100% of the length dimension L1 of the platen surface 11b of the platen 10b. Preferably, it is set to 50% or more and 80% or less. Thus, when compressing the fiber tow (fiber tow laminate) using the platen 10b, the pressure protrusion 12b effectively distributes the pressure applied to the center in the length direction of the fiber tow in the front-rear direction. Can be encouraged.

  In a side view or a longitudinal sectional view, the length L4 of the base side (upper side) base of the trapezoid of the pressing projection 12b is preferably 50% or more and less than 100% of the length L1 of the platen surface 11b of the platen 10b. Is set to 60% or more and 90% or less. As a result, the trapezoidal side (leg) in a side view or a vertical cross-sectional view is inclined at an appropriate angle, so that when the fiber tow is compressed by the platen 10b, the fiber tow is cut due to the pressing of the pressing protrusion 12b. It is possible to easily prevent damage to the packaging material.

  The protrusion top end face 13b of the pressing protrusion 12b of the platen 10b is a pair of front and rear ridges that become the protrusion side (bottom) bottom when viewed from the length direction described above when the platen 10b is viewed from below. And a rectangular shape surrounded by a pair of left and right ridge lines that are the bottom sides of the protrusions (lower side) when viewed from the width direction described above, and is formed on a flat surface orthogonal to the height direction of the platen 10b.

  When the position of the ridge line portion 14b where the platen surface 11b and the side surface of the platen 10b intersect is used as a reference for the height position, the height from the ridge line portion 14b serving as the reference to the protrusion top end face 13b of the pressing protrusion 12b. The dimension is set to 10 mm or more and 100 mm or less. By making the above-described height dimension of the pressing protrusion 12b 10 mm or more, the height position of the compression surface in the rectangular parallelepiped fiber tow can be easily made uniform by the compression effect of the pressing protrusion 12b, and the packaging material can be damaged. Less. By making the above-described height dimension of the pressing protrusion 12b larger than 100 mm, the compression surface may be recessed too much, making it difficult to make the entire compression surface uniform. From such a viewpoint, the above-described height dimension of the pressing protrusion 12b is preferably set to 20 mm to 70 mm, and more preferably set to 30 mm to 60 mm.

  In the platen 10b, the left and right side edge portions arranged on the outer side in the width direction than the pressing projection portion 12b and the front and rear edge portions arranged on the outer side in the length direction from the pressing projection portion 12b are: It is formed on a flat surface perpendicular to the height direction of 10b.

  Using the platen 10b (see FIGS. 6 and 7) according to the second embodiment as described above, the fiber to be compressed by performing the compression process on the fiber tows stacked in the transfer process described above. A greater pressure is applied to the center of the toe in the width direction than at the left and right outer edges in the width direction. Further, it becomes possible to push and move the fibers arranged in the center portion in the width direction on the upper surface of the laminated fiber tows toward the left and right outer sides. As a result, the density of the fibers in the center portion in the width direction of the fiber tows can be reduced with respect to the left and right width direction outer regions. Accordingly, when the pressure of the platen 10b is released after the fiber tow is packed and tightened with the fixing band 32, the upper surface of the fiber tow is easily formed flat.

  When the fiber tow packing body 30 is manufactured using the platen 10b according to the second embodiment as described above, the fiber tow packing body 30 to be manufactured is the first embodiment described above as shown in FIG. A pair of left and right formed on the left and right side edges of the top surface (or bottom surface) of the packing body 30 along the length direction as shown in FIG. It has a line-shaped recess 31b.

  The left and right streaky concave portions 31b as described above are continuous from one end portion (front end portion) in the length direction to the other end portion (rear end portion) in the length direction on the upper surface portion (or bottom surface portion) of the packing body 30. Is formed. In this case, as shown in FIG. 8, with respect to the height direction of the packing body 30, the height position at the deepest portion (bottom) of the streak-shaped recess 31 b formed on the upper surface portion of the packing body 30 is The height is lower than the height position of the fixing band 32 that tightens along the length direction, but is higher than the height position of the ridge line portion 33 arranged between the upper surface portion and the side surface portion of the package 30.

  When the plurality of packing bodies 30 are stacked in the vertical direction when the streaky recesses 31b as described above are arranged on the left and right side edge portions of the upper surface portion of the packing body 30, the lower packing stacked. The upper surface portion of the body 30 is easily deformed into a flat state, and stacking can be stabilized. Further, since the position of the fixing band 32 is not at the deepest position of the recess 31b (because the position of the fixing band 32 and the position of the deepest portion of the recess 31b are different from each other), the packing material is torn by the fixing band 32. And the contamination of the fiber tow packing body 30 can be prevented.

  In addition, regarding the left and right streaky concave portions 31b in the second embodiment, the number of the streaky concave portions 31b formed on the upper surface portion (or the bottom surface portion) of the packing body 30 and the upper surface portion (or the bottom surface of the packing body 30). The number of inflatable parts formed in the part) is as described in the first embodiment.

Next, a platen 10c according to a third embodiment of the present invention will be described with reference to FIGS.
On the platen surface 11c of the platen 10c according to the third embodiment, a pressing projection 12c is provided so as to protrude along the length direction in which the direction with respect to the fiber tow is the same as the swinging direction of the transfer chute 42, The top end portion having the largest protrusion height in the pressing protrusion portion 12c is arranged at the center position in the width direction of the platen surface 11c. The pressure platen 10c is provided with one pressing protrusion 12c, but the auxiliary protrusion 16 disposed on the left and right outer sides of the pressing protrusion 12a as in the first embodiment is provided. Absent.

  The entire protrusion end face (protrusion top end face) 13c of the pressing protrusion 12c is an arcuate curve that curves convexly toward the fiber toe when viewed in a cross section orthogonal to the length direction of the pressing protrusion 12c. Presents. In this case, the arcuate curve on the projection end face of the pressing projection 12c may be a perfect arcuate curve or an elliptical arcuate curve. In particular, when the projecting end surface 13c of the cross section exhibits a perfect circular arc-like curve, the projecting end surface 13c has a curved surface with a radius of curvature of 1000 mm to 2500 mm, preferably 1100 mm to 2400 mm, more preferably 1200 mm to 2300 mm. It is formed to become. Thereby, while cutting | disconnection of a fiber tow, damage to a packing material, etc. can be decreased more, it becomes easy to make the upper surface (or bottom surface) of the package 30 flat.

  The length dimension L2 of the pressing protrusion 12c is set to the same size as the length dimension L1 of the platen surface 11c, and the cross section perpendicular to the length direction of the pressing protrusion 12c is the length of the pressing protrusion 12c. The same shape (constant shape) is exhibited in the entire vertical direction. The width dimension W2 of the pressing protrusion 12c is preferably set to 35% or more and 100% or less of the width dimension W1 of the platen surface 11c. In particular, in the case of the third embodiment, the width dimension W2 of the pressing projection 12c is set to 90% to 100% of the width dimension W1 of the platen surface 11c, preferably the same as the width dimension W1 of the platen surface 11c. Is done. As a result, the force for compressing the fiber tows by the pressing protrusions 12c is easily dispersed throughout the entire length direction, and it becomes easy to prevent the fiber tow from being broken and the package 30 from being broken. It becomes easy to equalize the compression surface.

  When the position of the ridge line portion 14c where the side surface of the platen 10c intersects the side surface of the platen 10c is used as a reference for the height position, the height dimension from the ridge line portion 14c to the top end of the pressing projection 12c is 10 mm or more and 100 mm. In the following, it is preferably set to 20 mm to 70 mm, more preferably 30 mm to 60 mm. Thereby, it is possible to easily equalize the height position of the compression surface of the rectangular parallelepiped fiber tow by the compression effect of the pressing protrusion 12c, and it is possible to reduce the damage to the packing material.

  Using the platen 10c according to the third embodiment as described above (see FIG. 9 and FIG. 10), the fiber to be compressed by performing the compression process on the fiber tows stacked in the transfer process described above. A greater pressure is applied to the center of the toe in the width direction than at the left and right outer edges in the width direction. Further, it becomes possible to push and move the fibers arranged in the center portion in the width direction on the upper surface of the laminated fiber tows toward the left and right outer sides. As a result, the density of the fibers in the center portion in the width direction of the fiber tows can be reduced with respect to the left and right width direction outer regions. This facilitates forming the upper surface of the fiber tow flat when the fiber tow is packed and tightened with the fixing band 32 and then the pressure applied by the platen 10c is released.

  When the fiber tow packing body 30 is manufactured using the platen 10c according to the third embodiment as described above, the manufactured fiber tow packing body 30 is the first embodiment described above as shown in FIG. It has the same general appearance as the form. In addition, as shown in FIG. 11, the streak-like recessed part formed in the above-mentioned 1st and 2nd embodiments is shown in the right-and-left side edge part in the upper surface part (or bottom face part) of the package 30. 31a and 31b are not provided.

Next, a platen 10d according to a fourth embodiment of the present invention will be described with reference to FIGS.
On the platen surface 11d of the platen 10d according to the fourth embodiment, a pressing projection 12d is provided so as to protrude along the length direction in which the direction with respect to the fiber tow is the same as the swinging direction of the transfer chute 42, The top end portion having the largest protrusion height in the pressing protrusion portion 12d is disposed at the center position in the width direction of the platen surface 11d. The platen 10d is provided with one pressing projection 12d, but is not provided with the auxiliary projection 16 as in the first embodiment.

  The protrusion end face (protrusion top end face) 13d of the pressing protrusion 12d exhibits an arcuate curve that curves in a convex shape toward the fiber toe when viewed in a cross section orthogonal to the length direction of the pressing protrusion 12d. . In this case, the arcuate curve on the projection end surface 13d of the pressing projection 12d may be a perfect circular arcuate curve or an elliptical arcuate curve. In particular, when the projecting end surface 13d of the cross section exhibits a circular arc-shaped curve, the projecting end surface 13d has a curved surface with a radius of curvature of 1000 mm to 2500 mm, preferably 1100 mm to 2000 mm, more preferably 1200 mm to 1500 mm. It is formed to become. Thereby, while cutting | disconnection of a fiber tow, damage to a packing material, etc. can be decreased more, it becomes easy to make the upper surface (or bottom surface) of the package 30 flat.

  The length dimension L2 of the pressing protrusion 12d is set to the same size as the length dimension L1 of the platen surface 11d, and the cross section perpendicular to the length direction of the pressing protrusion 12d is the length of the pressing protrusion 12d. The same shape (constant shape) is exhibited in the entire vertical direction. The width dimension W2 of the pressing projection 12d is preferably set to be 35% or more and 100% or less of the width dimension W1 of the platen surface 11d. Particularly in the case of the fourth embodiment, the width dimension W1 of the platen surface 11d is 45. More preferably, it is set to not less than 70% and not more than 70%. As a result, the force for compressing the fiber tows by the pressing protrusions 12d is easily dispersed throughout the length direction, and it becomes easy to prevent the fiber tow from being broken and the package 30 from being broken. It becomes easy to equalize the compression surface.

  When the position of the ridge line portion 14d where the side surface of the platen 10d intersects the side surface of the platen 10d is used as a reference for the height position, the height dimension from the ridge line portion 14d to the top end portion of the pressing projection 12d is 10 mm or more and 100 mm. In the following, it is preferably set to 20 mm to 70 mm, more preferably 30 mm to 60 mm. Thereby, it is possible to easily equalize the height position of the compression surface of the rectangular parallelepiped fiber tow by the compression effect of the pressing protrusion 12d, and it is possible to reduce the damage to the packing material.

  In the platen 10d, the left and right side edge portions arranged on the outer side in the width direction than the pressing protrusion 12d are formed on a flat surface orthogonal to the height direction of the platen 10d. In this case, the left and right side edges arranged outside the pressing protrusion 12d may be provided with height adjusting plate portions for adjusting the height of the platen surface 11d. The lower surface (platen surface) of the height adjusting plate portion is formed on a flat surface orthogonal to the height direction.

  Using the platen 10d according to the fourth embodiment as described above (see FIG. 12 and FIG. 13), a fiber to be compressed by performing a compression process on the fiber tows stacked in the transfer process described above. A greater pressure is applied to the center of the toe in the width direction than at the left and right outer edges in the width direction. Further, it becomes possible to push and move the fibers arranged in the center portion in the width direction on the upper surface of the laminated fiber tows toward the left and right outer sides. As a result, the density of the fibers in the center portion in the width direction of the fiber tows can be reduced with respect to the left and right width direction outer regions. As a result, when the fiber tow is packed and tightened with the fixing band 32, when the pressure applied by the platen 10d is released, the upper surface of the fiber tow is easily formed flat.

Hereinafter, the present invention will be specifically described by way of examples.
[Measurement of the height of the center expansion part of the package]
The height dimension of the inflating part is based on the height position of the ridge line part between the upper surface part and the side part of the packing body, from the height position of the ridge line part to the height position of the highest top end part of the inflating part. Measure the height dimension H2. In the measurement, the average value of the measured values at 10 locations per package is obtained.

[Measurement of height (depth) from the fixed band to the deepest part (bottom) of the recess]
The height dimension (depth) H1 from the highest height position of the fixed band to the height position of the deepest part (bottom part) of the recess is measured. In the measurement, the average value of the measured values at 10 locations per package is obtained.

[Measurement method of hardness]
After manufacturing the package, store it in that state for one week. After storage, the packing band is cut to remove the packing material, and within 5 minutes, the hardness of the fiber tow is directly measured with a hardness meter.
As shown in phantom lines in FIG. 4, the measurement location is one end (front end) 35 a in the length direction, a center portion 35 b in the length direction, The other end (rear end) 35c in the length direction is used. Moreover, the ratio which divided the maximum difference of the hardness measured in these three places 35a-35c by the maximum value of the hardness measured in three places 35a-35c is set as the dispersion | variation between the hardness of fiber tow. In the measurement, the front end portion 35a, the central portion 35b, and the rear end portion 35c are measured by shifting the position little by little, and the average value is adopted as the hardness.

[Stability during two-stage loading]
The stacked state when the two packages are stacked vertically and stacked is visually evaluated in the following three stages.
A: It is stable.
B: Stable with slight inclination.
C: The inclination is large and unstable.

Example 1
A 580 kg acetate fiber tow imparted with crimps is transferred into a transfer container 44 as shown in FIG. And the fixing band 32 is hung around in the width direction and the length direction. Thereafter, the compressed state by the platen 10a was released, and a package 30 having a packing density of 410 kg / m ³ , a height dimension of 1050 mm, a width dimension of 1060 mm, and a length dimension of 1270 mm was manufactured.

  The platen 10a used in manufacturing the package 30 is an upper platen 10a disposed above the laminated fiber tows, and the platen 10a is shown in FIGS. 2 and 2 according to the first embodiment described above. The structure shown in FIG. In this case, the platen 10a has a platen surface 11a having a width dimension W1 of 980 mm and a length dimension L1 of 1230 mm. Further, the height dimension of the central pressing projection 12a is set to 50 mm and the width dimension W2 is set to 475 mm, and the height dimension of the auxiliary projections 16 on both the left and right sides is set to 39 mm and the width dimension is set to 225 mm. When the platen 10a is viewed from the front, the entire lower surface of the central pressing protrusion 12a and the left and right auxiliary protrusions 16 is an arch-shaped curved surface.

  The compression time by the platen 10a in the compression step was 2 minutes, and the compression pressure by the platen 10a was 16 MPa. Further, a corrugated cardboard provided with a resin film inside was used as the packing material, and a resin band was used as the fixing band 32.

  As shown in FIG. 4, the manufactured package 30 has two fixed bands 32 hung along the length direction and nine fixed bands 32 hung along the width direction. . Further, as shown in FIG. 5, two streak-like recesses 31 a are formed on the upper surface portion of the packing body 30, and each streak-like recess 31 a is formed on the left and right side edge portions of the upper surface portion of the packing body 30. It is formed along the length direction.

  The manufactured package 30 was not damaged by the packing material. The height dimension H2 of the central inflating part in the upper surface part of the package 30 was 40 mm, and the height dimension (depth) H1 from the fixed band 32 to the deepest part (bottom part) of the recess 31a was 50 mm. . The height dimension H3 from the height position of the ridge line portion 33 between the upper surface portion and the side surface portion of the package 30 to the height position of the deepest portion (bottom portion) of the recess 31a is 15 mm, and the ridge line portion 33 The height dimension from the height position to the highest height position of the fixed band 32 was 35 mm. Moreover, when the manufactured packaging bodies 30 were stacked in two stages in the vertical direction, they could be stacked stably.

(Example 2)
The platen 10b used in manufacturing the package 30 has the structure shown in FIGS. 6 and 7 according to the second embodiment described above. In this case, the height dimension of the pressing protrusion 12b of the platen 10b is set to 50 mm. When the pressure platen 10b is viewed from the front side, the width dimension W3 of the base side (upper side) of the base side (upper side) is set to 765 mm. Set to When the platen 10b is viewed from the side, the length L3 of the base of the trapezoidal pressing protrusion 12b is set to 730 mm, and the length L4 of the base (upper) base is L3. , 980 mm. Other than that was carried out similarly to the case of Example 1, and manufactured the package 30 with the same packing density and size.

  The manufactured package 30 has two fixed bands 32 hung along the length direction and nine fixed bands 32 hung along the width direction. Further, as shown in FIG. 8, two streak-shaped concave portions 31 b are formed in the vicinity of the fixing band 32 that is hung along the length direction on the upper surface portion of the packing body 30 along the length direction. .

  The manufactured packaging body 30 had little damage to the packaging material. The height dimension H2 of the central inflated part on the upper surface part of the package 30 is 30 mm, and the height dimension (depth of the recessed part 31b) H1 from the fixed band 32 to the deepest part (bottom part) of the recessed part 31b is 15 mm. Met. The height dimension H3 from the height position of the ridge line portion 33 between the upper surface portion and the side surface portion of the package 30 to the height position of the deepest portion (bottom portion) of the recess 31b was 10 mm. Further, when the manufactured packaging bodies 30 were stacked in two stages in the vertical direction, a slight inclination was recognized, but the stacks could be stably stacked.

(Example 3)
The platen 10c used in manufacturing the package 30 has the structure shown in FIGS. 9 and 10 according to the third embodiment described above. In this case, the height dimension of the pressing protrusion 12c in the platen 10c is set to 50 mm, and the width dimension W2 is set to 980 mm. When the platen 10c is viewed from the front, the entire lower surface of the central pressing projection 12c is an arch-shaped curved surface. Other than that was carried out similarly to the case of Example 1, and manufactured the package 30 with the same packing density and size.

  The manufactured package 30 has two fixed bands 32 hung along the length direction and nine fixed bands 32 hung along the width direction. It should be noted that a streak-like recess is not formed on the upper surface of the package 30. The height dimension H2 of the expansion part in the upper surface part of the package 30 was 40 mm. Moreover, when the manufactured packaging bodies 30 were stacked in two steps in the vertical direction, a slight inclination was recognized, but they could be stacked. On the other hand, the packaging body 30 was partially damaged.

Example 4
The platen 10d used in manufacturing the package 30 has the structure shown in FIGS. 12 and 13 according to the above-described fourth embodiment. In this case, the height dimension of the pressing protrusion 12d in the platen 10d is set to 40 mm, and the width dimension W2 is set to 475 mm. When the platen 10d is viewed from the front, the entire lower surface of the central pressing protrusion 12d and the left and right auxiliary protrusions 16 is an arch-shaped curved surface. Other than that was carried out similarly to the case of Example 1, and manufactured the package 30 with the same packing density and size. In the case of this Example 4, compared with the case of Example 1- Example 3, for example, it was able to work smoothly, without a packing material catching on the platen 10d.

  The manufactured package 30 has two fixed bands 32 hung along the length direction and nine fixed bands 32 hung along the width direction. A streak-like recess is not formed on the upper surface of the package 30. The height dimension H2 of the central inflated part in the upper surface part of the package 30 was 34 mm. Moreover, the manufactured packaging body 30 has no damage to the packaging material. When the manufactured packaging bodies 30 were stacked in two stages in the vertical direction, they could be stacked stably. Furthermore, in the measurement locations 35a-35c of the side part of the package 30, the hardness of each fiber tow was measured and the dispersion | variation in hardness was calculated | required. The results are shown in Table 2 below.

  As shown in Table 2, the maximum difference in hardness measured at three measurement locations 35a to 35c in the front end portion, the central portion, and the rear end portion of the side surface portion of the package 30 of Example 4 is “2 ° (= 48 ° -46 °) ”divided by the maximum hardness value“ 48 ° ”measured at the three measurement points 35a to 35c was 4%, which was 15% or less. For reference, in the upper region in the height direction of the side surface portion of the packing body 30, one end portion in the length direction (front end portion), the center portion in the length direction, and the other end portion in the length direction (rear) The results of measuring the hardness of the fiber tow at the three measurement points 35d to 35f at the end) are also shown.

(Comparative Example 1)
As shown in FIGS. 14 and 15, the platen 60 a used for manufacturing the package 30 has a flat platen surface 61 a, but otherwise has the same structure as that of the first embodiment. Using such a platen 60a, a packing body 30 having the same packing density and size was manufactured in the same manner as in Example 1.

  The manufactured package 30 has two fixed bands 32 hung along the length direction and nine fixed bands 32 hung along the width direction. A streak-like recess is not formed on the upper surface of the package 30. The height dimension H2 of the central inflating part in the upper surface part of the package 30 was 65 mm. When the manufactured packaging bodies 30 were stacked in two stages in the vertical direction, the inclination increased as the upper stage was reached, and could not be stacked stably. Moreover, the packaging body 30 was found to be partially damaged.

(Comparative Example 2)
As shown in FIGS. 16 and 17, the platen 60 b used for manufacturing the package 30 is a front view when the platen 60 b is viewed from the length direction and a side view when the platen 60 b is viewed from the width direction. And one pressing projection 62b having a trapezoidal shape. In this case, the height dimension of the trapezoidal pressing protrusion 62b in the platen 60b is set to 40 mm. When the platen 60b is viewed from the front side, the width dimension W3 of the protrusion-side base of the trapezoidal pressing protrusion 62b is set to 675 mm, and the width dimension W4 of the base-side base is equal to the width dimension W1 of the platen surface 61b. The same 980 mm is set. When the platen 60b is viewed from the side, the length L3 of the protrusion-side base of the trapezoidal pressing protrusion 62b is set to 875 mm, and the length L4 of the base-side base is the length of the platen 61b. It is set to 1230 mm which is the same as the dimension L1. Other than that was carried out similarly to the case of Example 1, and manufactured the package 30 with the same packing density and size.

  The manufactured package 30 has two fixed bands 32 hung along the length direction and nine fixed bands 32 hung along the width direction. A streak-like recess is not formed on the upper surface of the package 30. The height dimension H2 of the central inflating part in the upper surface part of the package 30 was 48 mm. When the manufactured packaging bodies 30 were stacked in two stages in the vertical direction, the inclination increased as the upper stage was reached, and could not be stacked stably. Moreover, the packaging body 30 was found to be partially damaged. Furthermore, in the measurement locations 35a-35c of the side part of the package 30, the hardness of each fiber tow was measured and the dispersion | variation in hardness was calculated | required. The results are shown in Table 2 below.

  As shown in Table 2, the maximum difference in hardness measured at three measurement locations 35a to 35c at the front end portion, the central portion, and the rear end portion of the side surface portion of the package 30 of Comparative Example 2 is “10 ° (= 50 ° -40 °) ”divided by the maximum hardness value“ 50 ° ”measured at the three measurement locations 35a to 35c was 20%, which was larger than 15%.

For reference, in the upper region in the height direction of the side surface portion of the packing body 30, one end portion in the length direction (front end portion), the center portion in the length direction, and the other end portion in the length direction (rear) The results of measuring the hardness of the fiber tow at the three measurement points 35d to 35f at the end) are also shown.
Moreover, it is related with the platen 10a manufactured using the platen 10a-10d, 60a, 60b used in Example 1- Example 4 and Comparative Example 1 and Comparative Example 2, and the platen 10a-10d, 60a, 60b. The data is summarized in Table 1 below.

  The fiber tow package manufactured according to the present invention can suppress the expansion due to the internal repulsion of the fiber tow, and has good stability when the packages are stacked in multiple stages. Moreover, it is a packaging body in which tearing and cracking of the packaging material due to changes with time of the packaging body are suppressed, and is a suitable packaging body from the viewpoint of storage, transportation, and the like.

1 Fiber toe 10a, 10b Platen 10c, 10d Platen 11a, 11b Platen surface 11c, 11d Platen surface 12a, 12b Press projection 12c, 12d Press projection 13a Projection end surface (projection top end surface)
13b Projection top end surface 13c, 13d Projection end surface (projection top end surface)
14a, 14b Ridge part 14c, 14d Ridge part 16 Auxiliary projection part 17 Valley part 19a First band insertion groove 19b Second band insertion groove 30 Packing body 31a, 31b Recess 32 Fixed band 33 Ridge part 35a-35f Measurement point 40 Toe transfer Device 41 Roll 42 Transfer chute 44 Transfer container 51 Front-rear direction (swing direction)
52 Left-right direction 60a, 60b Platen 61a, 61b Platen surface 62b Press projection H1 Height dimension between the deepest part of the recess and the fixing band (interval in the height direction)
H2 Height dimension of the expanding part from the ridge line part of the packing body H3 Height dimension from the ridge line part of the packing body to the deepest part of the recess L1 Length dimension of the platen surface L2 Length dimension of the pressing projection part L3 Pressing projection part L4 Width dimension of the base side of the pressing protrusion W1 Width dimension of the platen surface W2 Width dimension of the pressing protrusion W3 Width dimension of the protrusion side bottom of the pressing protrusion W4 W4 of the pressing protrusion Base side width dimension

Claims (7)

The fiber tows are stacked in a height direction by using a transfer chute that swings along one direction to transfer the fiber tows into the transfer container, and at least one of the upper and lower sides of the stacked fiber tows. The fiber tow is compressed along a height direction into a rectangular parallelepiped shape or a cubic shape using a pressure plate arranged, and the fiber tow in a compressed state is packaged with a packing material, and a plurality of fixing bands are provided on the packaged fiber tow. A manufacturing method for manufacturing the packaged fiber tow by wrapping
The platen is arranged facing the fiber tow and has a platen surface that has a square shape in a bottom view or a plan view,
A pressing protrusion is provided on the platen surface of the platen so as to project along a length direction that is a swinging direction of the transfer chute,
The dimension in the length direction of the pressing projection is set to the same dimension as the dimension in the length direction of the platen surface, and the dimension in the width direction of the pressing projection is the dimension in the width direction of the platen surface. Set to 35% or more and 100% or less,
The protrusion end surface of the pressing protrusion has an arc shape that curves in a convex shape toward the fiber toe when viewed in a cross section orthogonal to the length direction of the pressing protrusion, and the pressing protrusion The cross section of the same, presents the same shape in the entire length direction of the pressing protrusion,
The top end portion having the highest protrusion height in the pressing protrusion portion is arranged at the center position in the width direction of the platen surface.
A method for manufacturing a package body characterized by the above.   2. The method for manufacturing a package according to claim 1, wherein the arc-shaped protrusion end surface of the pressing protrusion is formed into a curved surface having a curvature radius of 1000 mm to 2500 mm.   The manufacturing method of the package of Claim 1 or 2 by which the at least 1 pair of auxiliary | assistant protrusion part parallel to the said press protrusion part is distribute | arranged to the said platen surface of the said pressure plate in the width direction outer side of the said press protrusion part. The fiber tows are stacked in a height direction by using a transfer chute that swings along one direction to transfer the fiber tows into the transfer container, and at least one of the upper and lower sides of the stacked fiber tows. The fiber tow is compressed along a height direction into a rectangular parallelepiped shape or a cubic shape using a pressure plate arranged, and the fiber tow in a compressed state is packaged with a packing material, and a plurality of fixing bands are provided on the packaged fiber tow. A manufacturing method for manufacturing the packaged fiber tow by wrapping
The platen is arranged facing the fiber tow and has a platen surface that has a square shape in a bottom view or a plan view,
A pressing protrusion is provided on the platen surface of the platen so as to project along a length direction that is a swinging direction of the transfer chute,
The shape when the pressing protrusion is viewed from the length direction and the shape when the pressing protrusion is viewed from the width direction, respectively, presents a trapezoid whose protrusion side base is shorter than the base end side base,
The protrusion top end surface of the pressing protrusion has a rectangular shape in a bottom view or a plan view,
When the pressing protrusion is viewed from the length direction, the dimension in the width direction of the base side of the protrusion of the trapezoid is set to 40% or more and 65% or less of the dimension in the width direction of the platen surface,
When the pressing protrusion is viewed from the width direction, the dimension in the length direction of the protrusion side bottom of the trapezoid is set to 40% or more and 100% or less of the dimension in the length direction of the platen surface.
A method for manufacturing a package body characterized by the above.   With reference to the position of the ridge line portion where the platen surface and the side surface of the platen intersect in the platen, the dimension in the height direction of the pressing protrusion from the ridge line portion is set to 50 mm or more and 100 mm or less. The manufacturing method of the package in any one of Claims 1-4.   The compression time of the platen is set to 1 minute or more and 10 minutes or less when the fiber tow is compressed using the platen, and the pressure by the platen is set to 12 MPa or more and 25 MPa or less. The manufacturing method of the package in any one. The platen includes two or more and four or less first band insertion grooves that are recessed along the length direction on the platen surface, and four or more and 12 that are recessed along the width direction on the platen surface. The following second band insertion groove,
The first band insertion groove and the second band insertion groove have a groove width of 18 mm or more and 35 mm or less,
The manufacturing method of the package in any one of Claims 1-6.

Images