JP6949768B2 - Bag making method and bag making machine - Google Patents

Description

The present invention relates to a bag making method and a bag making machine for manufacturing a bag body with a spout.

Patent Document 1 discloses a technique for manufacturing a bag body in which a spout is attached to a peripheral seal portion at an edge of a film during bag making. However, in this technique, there is a restriction that a spout is provided at the edge in the width direction of the film. If the spout is attached during bag making at a position other than the edge in the width direction of the film, it becomes necessary to cut the film so as to intersect the spout in the process of separating the bag from the film. Cutting the film on the film to which the spout is attached may cause adverse effects such as scratches on the spout and damage to the blade.

Japanese Unexamined Patent Publication No. 2006-7630

The present invention has been made in view of the above circumstances, and provides a bag making method and a bag making machine capable of mounting a spout during bag making at a position other than the edge in the width direction of the film. Is the subject.

In order to solve the above problems, the present invention presents a peripheral seal portion formed by folding or stacking a plurality of strip-shaped films and sealing the inner surfaces of the films while transporting the compound leaf film in the longitudinal direction. A bag-making method in which a bag body to which a spout is attached is manufactured so as to form a plurality of rows in a width direction intersecting the longitudinal direction, and the spout is attached to at least one or more of the plurality of rows. The widthwise edge of the film is not reached at the position where the spout is mounted, which is set on the film so that the bag is mounted on the side adjacent to another row. A step of making a cut, a step of mounting the spout on the film so as to intersect the cut, and a step of cutting the film so as to be connected to the cut and separating the bags from each other. , only contains the cuts, it is formed so as not to include closed shape on the film, to provide a bag manufacturing method characterized by preventing bleeding scraps of the film.

In the step of separating the bags from each other, at least one row and the row on the side where the spout is mounted are along a cutting line obtained by cutting the film so as to be connected to the cut. The strip-shaped boundary set between the adjacent row and the other row may be continuously removed.
The cut may be continuous linear or perforated .
The cut may be formed by inserting a cutting tool into a slit portion formed in the receiving portion.
When the film has a recess, the receiving portion may be formed in a convex shape so as to project toward the recess.

Further, in the present invention, a spout is attached to a peripheral sealing portion formed by folding or stacking a plurality of strip-shaped films and conveying the compound leaf film in the longitudinal direction while sealing the inner surfaces of the films. A bag making machine for manufacturing a bag body so as to form a plurality of rows in a width direction intersecting the longitudinal direction. The widthwise edge of the film at a position where the spout is mounted, which is set on the film so that the spout is mounted on the side where the bag to which the spout is mounted is adjacent to another row. A means for making a cut that does not reach the above, a means for mounting the spout on the film so as to intersect the cut, and a means for cutting the film so as to be connected to the cut so that the bag body is mutually attached. viewed contains a means for separating, the means for placing the cuts, to form the cut so as not to include closed shape on said film, bag-making machine, characterized in that to prevent bleeding scraps of the film I will provide a.

The means for separating the bags from each other is along the cutting line obtained by cutting the film so as to be connected to the cut, at least one row or more, and the row on the side where the spout is mounted. The strip-shaped boundary set between the adjacent row and the other row may be continuously removed.
The means for making the cut may be continuous linear or perforated to form the cut.
The means for making the cut includes a blade for forming the cut in the film and a receiving portion arranged so as to face the blade, and the receiving portion is used to form the cut in the film. May have a slit portion into which the blade is inserted.
When the film has a recess, the receiving portion may be formed in a convex shape so as to project toward the recess.

According to the present invention, since the film is cut before the spout is attached, it is not necessary to cut the film so as to intersect the spout after that. This facilitates mounting the spout during bag making at a position other than the widthwise edge of the film.

It is a schematic block diagram which shows an example of the bag making machine of this invention. It is (a) front view and (b) vertical sectional view which shows an example of the bag body with a spout manufactured by a bag making machine. It is a top view which illustrates the positional relationship between a spout and a cut on a film. It is a top view explaining the initial step in an example of the bag making method of this invention in the order of (a)-(d). It is a top view which explains the intermediate step in an example of the bag making method of this invention in the order of (a)-(d). It is a top view explaining the final step in an example of the bag making method of this invention in the order of (a)-(d). It is a top view which shows an example of the means of making a cut in a film. It is a side view which shows an example of the means of making a cut in a film.

Hereinafter, the present invention will be described with reference to the drawings based on the preferred embodiments.

FIG. 1 is a schematic configuration diagram showing a bag making machine of the present embodiment. In the bag making machine 20 of the present embodiment, the body supply portion 21 around which the raw film 11a serving as the body film 11 of the bag body is wound and the bottom portion around which the film serving as the bottom film 12 of the bag body is wound. The supply unit 22 and the transport means 23 for transporting the films 11 and 12 are included. Further, in the bag making machine 20 of the present embodiment, the mounting means 25 for mounting the spout on the body film 11, the peripheral sealing means 26 for forming the peripheral sealing portion of the bag body on the films 11 and 12, and the peripheral sealing portion are formed. It is provided with cutting means 27, 28 for cutting the formed films 11 and 12 into the shape of a bag.

The raw film 11a wound around the body supply section 21 is cut into two strips of the same width along the longitudinal direction thereof by a cutter (not shown). The two body films 11 are arranged so that the inner surfaces having the sealant layers that can be joined by heat sealing face each other. A mating means 23a such as a mating roll is used so that the front, rear, left and right positions of the two body films 11 are accurately superposed. The alignment means 23a can be moved in the vertical direction, which is the direction in which the body film 11 is overlapped, and in the width direction of the body film 11 by a moving means such as a servomotor. Further, the operation of the servomotor is performed based on the optical sensors that detect the design of the body film 11 and the positions of both ends in the width direction, and the output values of these optical sensors, and the transport direction and width of each body film 11. It is controlled by a control means (not shown) that detects the positional deviation along the direction. For the optical sensor, for example, a phototube, a CCD camera, or the like is used.

After the bottom film 12 is inserted between the two body films 11, the body film 11 and the bottom film 12 are overlapped by the conveying means 23 along the longitudinal direction of the films 11 and 12. It is transported to the downstream side in the transport direction. In FIG. 1, the upstream side in the transport direction is the right side of FIG. 1, and the downstream side in the transport direction is the left side of FIG.

The films 11 and 12 are examples of biplane films formed by folding or stacking a plurality of strip-shaped films. The films 11 and 12 are conveyed in the longitudinal direction by the conveying means 23. In order to perform good sealing, the transporting means 23 preferably intermittently transports the films 11 and 12 at regular intervals by a controller (not shown), and pauses the transport when sealing the film and / or spout. It is configured to do.

When intermittent transportation is performed by a transfer roller or the like, the transfer roller may be stopped when the film transfer is stopped. The transporting means 23 is not limited to a transport roller or the like capable of continuously transporting the film, and may have a configuration in which the film is intermittently grasped and transported. For example, a transport means is adopted in which a pair of holding bars in which a plurality of holding members such as rubber are arranged in the width direction of the film are arranged vertically, and the film is held by the pair of holding bars and the film is moved in the downstream direction. It is possible.

The means for controlling the feed amount of the films 11 and 12 is not limited to the control based on the optical sensor, and when pitch control is not required such as a bag without a pattern, the rotation amount of the servomotor is replaced. It is also possible to adopt a means for controlling the feed of the films 11 and 12 to be constant by controlling the film 11 and 12 to be constant.

In the bag-making method of the present embodiment, while transporting the film, the bag bodies in which the spouts are attached to the peripheral sealing portion formed by sealing the inner surfaces of the films are formed in a plurality of rows in the width direction intersecting the longitudinal direction. To manufacture. Here, before explaining the step of attaching the spout described later to the conveyed film to seal and cut the film, an example of a bag with a spout obtained in production will be described with reference to FIG. FIG. 2A is a front view of the bag body, and FIG. 2B is a vertical cross-sectional view of the bag body. The line S in FIG. 2 (a) indicates the position of the cross section shown in FIG. 2 (b).

The bag body 10 with a spout is a standing pouch having a self-supporting body in which a bottom film 12 folded in half is arranged between a pair of body films 11 and 11. The films 11 and 12 are welded to each other at the upper seal portion 13 on the side where the spout 16 is mounted, the side seal portions 14 on the left and right sides of the bag body, and the bottom seal portion 15 on the side opposite to the spout 16. When the bag body 10 is manufactured from the films 11 and 12, the position of the upper seal portion 13 is opened as an unsealed opening 13a (see FIG. 6D described later) for the purpose of filling port or the like. May be good.

The films 11 and 12 constituting the bag 10 include a laminate having a sealant on at least one side, for example, a polyolefin such as polyethylene (PE), polypropylene (PP), ethylene-vinyl acetate copolymer (EVA), and cyclic polyolefin. The resin layer is the innermost layer (sealant), and a stretched film such as a biaxially stretched nylon film, a biaxially stretched polyethylene terephthalate film, or a biaxially stretched polypropylene film is used as a base material, and if necessary, an ethylene-vinyl alcohol copolymer or a metal is used. A laminated film having a vapor-deposited layer of an inorganic compound, a metal foil such as an aluminum foil, or the like as an intermediate layer can be used, but the present invention is not particularly limited thereto. The body film 11 and the bottom film 12 may have the same material and thickness, or may be different from each other, as long as they can be joined to each other by welding or the like.

The spout 16 has at least a sealant layer of the body film 11 and a weldable thermoplastic resin layer on the surface thereof so that the spout 16 can be heat-sealed to the body film 11. Materials for forming the spout 16 include polyethylene (PE), polypropylene (PP), ethylene-vinyl acetate copolymer (EVA), polyester such as polyethylene terephthalate (PET), polyamide such as nylon, and adhesive polyolefin. Thermoplastics such as cyclic polyolefin and polybutylene can be used.

The spout 16 has a flange portion 17 joined to the body film 11 at the joint portion 19, and a tubular portion 18 protruding outward from the bag body from the flange portion 17. When the tubular portion 18 is joined to the body film 11 at the joining portion 19, the flange portion 17 may be omitted. The presence of the flange portion 17 is preferable because the film 11 can be easily stretched and the flange portion 17 can be hermetically sealed with the body film 11. Further, the tubular portion 18 does not have to be a simple cylindrical shape, and may be provided with a lid or various attachments, or may be a hollow body having a deformed shape. In the present embodiment, since the spout 16 is attached to the side ends of the body films 11 and 11, various spouts can be adopted.

In the bag making machine 20 of the present embodiment, the mounting means 25 makes the preheating means 25a that preheats the region where the spout is mounted on the body film 11 and the region where the spout is mounted concave on the body film 11. The molding means 25b for molding, the insertion means 25c for inserting the spout between the body films 11 and 11, the temporary fixing means 25d for temporarily fixing the spout to the body film 11, and the spout to the body film 11 after the temporary fixing. It is provided with a fixing means 25e for fixing. The mounting means 25 preferably includes at least the inserting means 25c and the fixing means 25e.

The preheating means 25a is a heater that heats at least a part of the body film 11 in which the spout 16 is mounted. The region preheated by the preheating means 25a (preheating region) can be provided, for example, in a portion of the spout 16 to which the flange portion 17 is mounted. The preheating region may include the outside (peripheral portion) of the region where the spout 16 is mounted.

The preheating process makes it easier for the preheating region to grow. As a method in which the preheating means 25a heats the body film 11, a contact type in which the heater is in direct contact and a non-contact type in which infrared rays or the like are radiated can be adopted. The heating side may be from the inside or from the outside. At the position of the preheating means 25a, the body films 11 can be separated from each other so that the body films 11 are not sealed with each other. Further, it is preferable to finish the preheating immediately before the heat from the preheating means 25a melts the sealant layer of the body film 11 by appropriately adjusting the heating conditions of the preheating means 25a such as the heating time and the contact pressure. Therefore, it is preferable to heat from the outside of the body film 11.

The molding means 25b is a molding portion that molds at least a part of the body portion film 11 in the region where the spout 16 is mounted by compressed air, vacuum, or the like. The region (molding region) formed by the molding means 25b can be provided, for example, in a portion of the spout 16 to which the flange portion 17 is mounted. The molding region may include the outside (peripheral portion) of the region where the spout 16 is mounted. It is preferable that the molding region is set on the preheating region because molding becomes easy.

The insertion means 25c is a belt conveyor, a parts feeder, or the like that is intermittently driven in a direction intersecting the flow direction of the body film 11. The spout 16 is supplied between the body films 11 from the insertion means 25c. When a preheating region or a molding region is formed on the body film 11, the spout 16 is inserted on the downstream side in the transport direction. When the spout 16 is inserted between the body films 11 and the body film 11 is conveyed by the conveying means 23, the preheating region may be stretched along the outer peripheral surface of the spout 16 by pulling the conveying means 23. When the molding region is formed on the body film 11, it is not necessary to set the stretching of the preheating region.

The temporary fixing means 25d temporarily fixes the spout 16 to the body film 11. The temporary fixing step of the spout is preferably performed immediately after the spout insertion step, unless the time for suspending the film transport is unnecessarily extended. As a result, the risk of misalignment of the spout 16 due to the transport of the film is suppressed. The temporary fixing means 25d is, for example, a point sealing device that partially seals between the body film 11 and the peripheral surface of the spout 16.

The fixing means 25e is provided on the downstream side of the temporary fixing means 25d in the transport direction. It is preferable that the fixing means 25e is provided at two or more locations along the transport direction of the film 11. When the entire circumference of the spout 16 is heated during temporary fixing of the spout 16, or when the spout is small or the material is easy to seal, it is possible to complete the fixing of the spout to the film with a single seal. .. In this case, the fixing means 25e may be provided at one location in the transport direction.

In the present embodiment, in the mounting means 25, a cut is made in the film before mounting the spout in order to avoid the need to cut the film so as to intersect the spout after mounting the spout on the film. FIG. 3 illustrates the positional relationship between the spout 16 and the cut 30 on the film 11. The cut 30 in the illustrated example includes a crossing portion 31 that intersects the tubular portion 18 along the axial direction of the tubular portion 18, and a parallel portion 32 along the axial direction of the tubular portion 18. In FIG. 3, the distance D indicates the distance between the cross section 31 and the edge of the flange portion 17 on the tubular portion 18 side. Since the cross section 31 is formed before mounting the spout, it may be arranged on the flange portion 17, but it may be arranged on the edge of the flange portion 17 on the cylinder portion 18 side or may be arranged on the cylinder portion 18 side. It is preferable to be done. More specifically, the cross-sectional portion 31 is preferably located at a position of 0 to 3 mm on the tubular portion 18 side with respect to the edge of the flange portion 17 on the tubular portion 18 side.

By providing the cross section 31 on the film before mounting the spout 16, in the cutting of the film 11 performed after mounting the spout 16 on the film 11, cutting is performed from both ends of the cross section 31 away from the spout 16. Can be done. When the cut 30 includes the parallel portion 32, the contact of the film 11 with the tubular portion 18 can be suppressed and the workability can be improved. The transverse portion 31 or the parallel portion 32 may include a joint portion 33 in which the film 11 is connected between the cuts 30. The length of the joint portion 33 is preferably such that the film 11 is broken by a lighter load than cutting, such as by pulling the film 11.

The cut 30 may be a continuous linear shape that does not include the joint portion 33, or may be a perforated shape that includes the joint portion 33. In order to prevent the film 11 from being scraped, it is preferable that the cut 30 is formed so as not to include a closed figure on the film 11. Examples of the shape of the cut 30 that does not include the closed figure include, but are not limited to, an I-shape, an L-shape, a V-shape, a T-shape, and an X-shape.

Next, in FIGS. 4 to 6, each step on the film 11 will be described in order. FIG. 4 shows the initial stage, FIG. 5 shows the intermediate stage, and FIG. 6 shows the final stage. In each stage, the steps (a) to (d) proceed in the order from right to left as in FIG. Have been placed. However, in each of the steps (a) to (d) on the drawing, for convenience, only one section corresponding to the width of the bag body 10 in the transport direction is shown, but each step is shown on an actual bag making machine. May be composed of two or more sections, or a section in which processing is not performed and only transportation is performed may be interposed between the steps.

In the examples shown in FIGS. 4 to 6, the bag bodies are manufactured so as to form two rows in the film width direction, and the spout is attached to the side where the bag bodies in each row are adjacent to another row. The bottom seal portion 15 of the bag body is arranged on the edge 11s side in the width direction of the film 11. These figures show the inner surface side of the body film 11 including the cross section of the spout 16. The bottom seal portion 15 indicates a range in which the body film 11 is sealed with the bottom film 12 (not shown), and the side seal portion 14 indicates a range in which the body film 11 is sealed with the body film 11 facing the bottom film 11. Further, in FIGS. 4 to 6, the widths of the cuts 30 and the cutting lines 34 and 35 of the film 11 are emphasized thickly, but the cuts 30 and the cutting lines 34 and 35 have widths in order to suppress the debris of the film 11. It is preferably a non-linear penetration.

4 shows, in order from right to left, (a) the film 11 before processing, (b) the film 11 in which the preheating region 11b is formed by the preheating means 25a of FIG. 1, and (c) the molding means 25b of FIG. The film 11 in which the molding region 11c was formed by the above, and (d) the film 11 in which the cut 30 was formed by the cut forming means 24 of FIG. 1 are shown.

5A and 5B show the film 11 in which the point-shaped heating region 11d is set with respect to the spout 16 by the temporary fixing means 25d of FIG. 1 in the order from right to left, and the fixing means 25e of FIG. A film 11 in which a heating region 11e is set over the entire flange portion of the spout 16, (c) a film 11 in which the spout 16 is fixed, and (d) a side seal portion 14 and a bottom as a peripheral seal portion by the peripheral seal means 26 of FIG. The film on which the seal portion 15 is formed is shown.

In FIG. 6, in the order from right to left, (a) a cutting line 34 in the film transport direction is formed from one end of the cut 30 along the upper part of the bag body, and a band-like boundary is formed between two rows adjacent to each other in the width direction. The film 11 from which the portions 36 are separated, (b) a film in which a cutting line 35 in the film width direction is formed between the cut 30 and the cutting line 34 on the upstream side, and (c) the boundary portion 36 is removed to form two rows. The bag body 10 separated from the film 11 by cutting the periphery of the film 11, the (d) side seal portion 14 and the bottom seal portion 15 in which the separation portion 37 is formed is shown.

The sealing step of sealing the films 11 and 12 is preferably performed in parallel with the spout mounting step or after the spout mounting step. When the sealing process is synchronized with the fixed sealing process of the spout, it is possible to seal a plurality of times without providing a section dedicated to the fixed sealing process of the spout.

The sealing steps of the films 11 and 12 include a side sealing step of forming the side sealing portion 14 between the two body films 11 and a bottom forming the bottom sealing portion 15 at a position where the bottom film 12 overlaps the body film 11. It may be set separately from the sealing process. The bag making machine 20 of the present embodiment includes the bottom sealing means 26a and the side sealing means 26b as the peripheral sealing means 26.

If the side sealing step is after the spout insertion step, it may overlap with the spout temporary fixing step and the spout fixing sealing step in time. Further, the bottom sealing step may be timely overlapped with all or one or more of the spout insertion step, the spout temporary fixing step and the side sealing step.

In FIG. 1, the cutting means 27, 28 for cutting the films 11 and 12 on which the peripheral seal portions are formed into the shape of a bag body is a first method of cutting between a plurality of rows and separating each row in the width direction. It includes a cutting means 27 and a second cutting means 28 that cuts each row in the width direction and separates each bag body in the longitudinal direction. Since the first cutting means 27 forms the cutting lines 34 and 35 shown in FIG. 6, a blade such as a Thomson blade can be used. When forming the cutting lines 34 and 35, contact between the cutting tool and the spout can be avoided. When separating the individual bag bodies 10 from the film 11 by the second cutting means 28, for example, a guillotine cutter can be used.

7 and 8 show specific examples of the cut forming means 24 for forming the cut 30 in the film 11. The cut forming means 24 is composed of a cutting member 40 having a blade 41 supported by a plate-shaped first support portion 43 and a receiving portion 42 supported by a plate-shaped second support portion 44. The blade 41 may have a gap portion 45 having no blade at a position corresponding to the joint portion 33. The receiving portion 42 has a slit portion 46 into which a cutting tool 41 can be inserted when forming a cut. When the joint portion 33 is not provided in the cut portion 30, the gap portion 45 of the blade 41 can be omitted.

FIG. 7 shows a state in which the side on which the blade 41 is formed on the first support portion 43 and the side on which the receiving portion 42 is formed on the second support portion 44 are arranged so as to face the same side. In the step of forming the cut 30 in the film 11, as shown in FIG. 8, the side where the blade 41 is formed on the first support portion 43 and the side where the receiving portion 42 is formed on the second support portion 44. Are arranged so as to face each other via the film 11.

The blade 41 is, for example, a punching blade, and is inserted into the slit portion 46 when the cut 30 is punched and formed in the film 11. The width of the slit portion 46 is preferably about +0.05 to 0.4 mm larger than the width of the blade 41. If the width of the slit portion 46 is too wide as compared with the width of the blade 41, the film 11 is pushed into the slit portion 46 before the cut 30 is made, the film 11 is stretched, and the cut surface of the cut 30 becomes dirty. There is a risk. If the gap between the width of the blade 41 and the width of the slit portion 46 is too small, it becomes difficult for the blade 41 to enter the slit portion 46. A blade may not be formed on the peripheral edge of the slit portion 46 in the receiving portion 42, or a blade may be formed.

The receiving portion 42 is inclined to the left and right so that the central portion of the cut 30 projects toward the blade 41. As a result, even when the film 11 is formed by compressed air forming or the like, the blade 41 is likely to come into contact with the film 11. It is preferable to align the bottom of the concave portion 11v of the film 11 with the tip of the convex portion of the receiving portion 42. Both ends of the blade 41 may be exposed to the outside of the slit portion 46 when the blade 41 is inserted deepest into the slit portion 46, or the entire blade 41 may be inserted into the slit portion 46. Since the receiving portion 42 is formed in a convex shape so as to project toward the concave portion 11v of the film 11, it becomes easy to make a cut 30 in the concave portion 11v.

The cut member 40 used as the cut forming means 24 of the present embodiment has a purpose other than forming a cut in the film 11 at the position where the spout 16 is mounted, for example, a perforation or the like as an opening auxiliary line or a handle hole. It can also be used for the purpose of forming a break in the. Even in the case of the handle hole, if the cut is C-shaped or the like, it is possible to prevent the generation of debris.

Although the present invention has been described above based on preferred embodiments, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the gist of the present invention.
For example, in the above embodiment, the standing pouch shown in FIG. 2 has been described, but the mode of the bag body that can be manufactured by the present invention is not particularly limited. For example, it can be applied to various types of packaging bags capable of pre-emptive bag making, such as a three-sided seal, a four-sided seal flat bag, and a square bottom bag. When the bottom film is omitted from the above-described embodiment, for example, a method of sealing two body films to make a bag, and a method of folding one body film in half along the longitudinal direction thereof and centering the film. It is also possible to implement a method in which the folding line of the bag is used as the bottom of the bag.

In the above-described embodiment, the spout is mounted diagonally with respect to the transport direction on the side where the bag body of each row is adjacent to another row, but the position of the spout in the bag body of each row is limited to this. It's not a thing. Spouts may be provided perpendicular to or parallel to the transport direction. In at least one row, the spout is mounted on the side where the bag is adjacent to another row, and in at least one row, the bag is adjacent to the widthwise edge of the film (ie, adjacent to another row). The spout may be attached on the non-side). Spouts may be provided at only one place on each bag body, or spouts may be provided at two or more places. Even if the position where the spout is attached to the bag is set to one or more on the side where the bag is adjacent to another row and one or more on the side where the bag is adjacent to the edge in the width direction of the film. good.

In at least one of the plurality of rows set in the width direction, when the spout is attached to the side where the bag body is adjacent to the edge in the width direction of the film, as shown in FIG. 8 of Patent Document 1, the film The film may be formed with a notch that reaches the edge in the width direction of the film. In this case, the spout can be arranged so as to intersect the inside from the peripheral edge of the notch portion, and the spout can be attached to the film.

In at least one of the plurality of rows set in the width direction, the row in which the spout is mounted on the side adjacent to the other row is the first row, and the bag body belonging to the first row is the side on which the spout is mounted. When setting the adjacent second row, the spout may be mounted after forming a cut at the position where the spout is mounted in the first row, as in the present embodiment. After that, when the film is cut so as to be connected to the cut and the bags are separated from each other, the strip-shaped boundary set between the first row and the second row can be continuously removed. .. In the case of the example described here, in the bag body belonging to the second row, the spout is mounted on the side adjacent to the first row, or the spout is mounted on the side adjacent to the third row different from the first row. It is optional, or the spout is mounted on the side adjacent to the widthwise edge of the film. Even in the bag body belonging to the second row or the third row, when the spout is mounted on the side adjacent to the other row, the spout is mounted in the second row or the third row as in the first row. It is possible to carry out steps such as forming a cut in the film.

10 ... bag body, 11 ... body film, 11a ... raw film, 11b ... preheating region, 11c ... molding region, 11d, 11e ... heating region, 11s ... widthwise edge, 11v ... recess, 12 ... bottom film , 13 ... Top seal part, 13a ... Opening part, 14 ... Side seal part, 15 ... Bottom seal part, 16 ... Spout, 17 ... Flange part, 18 ... Cylinder part, 19 ... Joint part, 20 ... Bag making machine, 21 ... Body supply unit, 22 ... Bottom supply unit, 23 ... Transport means, 23a ... Alignment means, 24 ... Cut forming means, 25 ... Mounting means, 25a ... Preheating means, 25b ... Molding means, 25c ... Inserting means, 25d ... Temporary fixing means, 25e ... Fixing means, 26 ... Peripheral sealing means, 26a ... Bottom sealing means, 26b ... Side sealing means, 27 ... First cutting means, 28 ... Second cutting means, 30 ... Cut, 31 ... Cross section, 32 ... Parallel part, 33 ... Joint part, 34, 35 ... Cutting line, 36 ... Boundary part, 37 ... Separation part, 40 ... Cut member, 41 ... Blade, 42 ... Receiving part, 43 ... First support part, 44 ... Second support portion, 45 ... gap portion, 46 ... slit portion.

Claims (10)

A bag body in which a spout is attached to a peripheral seal portion formed by sealing the inner surfaces of the films while carrying the compound leaf film in the longitudinal direction by folding or stacking a plurality of strip-shaped films. It is a bag making method that manufactures multiple rows in the width direction that intersects the longitudinal direction.
In at least one or more of the plurality of rows, the spout set on the film is mounted so that the bag on which the spout is mounted is mounted on a side adjacent to another row. The step of making a cut at the position that does not reach the edge in the width direction of the film, and
The step of mounting the spout on the film so as to intersect the cut, and
By cutting the film so as to be connected to the cut, saw including a separating said bag body to each other,
A bag-making method, characterized in that the cut is formed so as not to include a closed figure on the film to prevent the film from being scraped. In the step of separating the bags from each other, at least one row and the row on the side where the spout is mounted are along a cutting line obtained by cutting the film so as to be connected to the cut. The bag-making method according to claim 1, wherein a band-shaped boundary portion set between the adjacent rows and the other rows is continuously removed. The bag making method according to claim 1 or 2, wherein the cut is a continuous linear or perforated shape. The bag-making method according to any one of claims 1 to 3, wherein the cut is formed by inserting a cutting tool into a slit portion formed in a receiving portion. The bag-making method according to claim 4, wherein the receiving portion is formed in a convex shape protruding toward the concave portion when the film has a concave portion. A bag body in which a spout is attached to a peripheral seal portion formed by sealing the inner surfaces of the films while carrying the compound leaf film in the longitudinal direction by folding or stacking a plurality of strip-shaped films. A bag making machine that manufactures multiple rows in the width direction that intersects the longitudinal direction.
A transport means for transporting the film and
In at least one or more of the plurality of rows, the spout set on the film is mounted so that the bag on which the spout is mounted is mounted on a side adjacent to another row. A means of making a cut at the position that does not reach the widthwise edge of the film, and
A means for mounting the spout on the film so as to intersect the cut, and
By cutting the film so as to be connected to the cut, saw including a means for separating the bag body to each other,
A bag making machine characterized in that the means for making a cut forms the cut so as not to include a closed figure on the film to prevent the film from being scraped. The means for separating the bags from each other is along the cutting line obtained by cutting the film so as to be connected to the cut, at least one row or more, and the row on the side where the spout is mounted. The bag making machine according to claim 6, wherein a band-shaped boundary portion set between the adjacent rows and the other rows is continuously removed. The bag making machine according to claim 6 or 7, wherein the means for making the cut is a continuous linear or perforated shape, and the cut is formed. The means for making the cut includes a blade for forming the cut in the film and a receiving portion arranged so as to face the blade, and the receiving portion is used to form the cut in the film. The bag-making machine according to any one of claims 6 to 8, wherein the bag-making machine has a slit portion into which the blade is inserted. The bag making machine according to claim 9, wherein the receiving portion is formed in a convex shape protruding toward the concave portion when the film has a concave portion.

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