JP6947398B2 - Vertical automatic filling and packaging machine - Google Patents

Description

The present invention relates to a vertical automatic filling and packaging machine that automatically produces a packaging bag by filling food while vertically transporting a laminated packaging material (packaging film) having a relatively high melting point for a sealant such as for retort pouches.

In general, even packaged foods cannot avoid the adhesion or contamination of microorganisms such as mold, yeast, and bacteria. Therefore, retort (heat sterilized) foods that can be heat-sterilized together with the package before meals are widely distributed. There is. Among such retort foods, those that are film-wrapped and correspond to semi-retort to retort packaging are referred to as retort packaging bags (retort packaging bags) here.

Conventionally, when filling and packaging a retort packaging bag such as a retort curry, an individual packaging bag as described in Patent Document 1 which is made into a bag shape by another machine or the like with an upper opening left in advance is used. They are taken out one by one and transported in a circular shape. During the circular transport, the contents are filled, and then the upper part is horizontally sealed (heat-sealed, heat-welded) and sealedly packaged (Fig.). It is the mainstream to use a bag filling and packaging machine that produces (see 1) 4-sided sealed packaging bag).

This is because in the case of retort-packed packaging bags, it was necessary to use packaging materials (films) with a higher melting point than packaging bags for other foods, so it is necessary to take time to seal each bag securely. This is because a bag filling and packaging machine that can perform bag filling and packaging was suitable.

More specifically, since a retort packaging bag is generally sterilized by heating at 120 ° C. for 4 minutes, the packaging material (laminated film: laminated film) has a melting point in the sealant layer (the surface where the films are welded together). The one having a temperature of 120 ° C. or higher is adopted. This is because if the film has a melting point lower than 120 ° C., the heat-welded film may melt during heating and cannot be sealed, and the contents may leak out.

Therefore, as the retort packaging bag, for example, as shown in FIG. 2, PET (polyethylene terephthalate) is used as the base base material, aluminum foil is used as the barrier layer, and the sealant layer is used in this order from the outer surface (outside, outer surface). In many cases, a laminated packaging material formed by laminating CPP (cast polypropylene film) for retort pouch is adopted.

Japanese Unexamined Patent Publication No. 2010-013184 Japanese Unexamined Patent Publication No. 08-133240

When such a high melting point packaging material is adopted, when the upper part is laterally sealed (heat-sealed) after filling the contents, in order to improve the sealing quality, the packaging materials are separated from each other. It is necessary to take a long time to keep them in close contact with each other and heat them. When heated rapidly, the packaging material shrinks and the heat-welded state becomes incomplete, causing problems such as leakage of the contents and poor appearance.

For this reason, in the past, using the bag filling and packaging machine described above, it was necessary to take time to securely seal each bag, and only low-speed production could be performed. There was a fact that the production efficiency was poor.

A bag with an upper opening is created while transporting (feeding) a long packaging material (wrapping film) in the vertical direction (substantially vertical direction) as described in Patent Document 2, and the contents thereof are contained therein. When attempting to perform retort packaging with a so-called vertical automatic filling and packaging machine that fills and automatically produces packaging bags, the packaging material with a high melting point is still used. Similarly, since it is necessary to lengthen the heating and holding time in order to ensure the sealing quality, as a result, it is necessary to reduce the packaging speed to the same level as the above-mentioned bag filling and packaging machine, resulting in production efficiency. There was a fact that it was difficult to improve.

The present invention has been made in view of the above circumstances, and in the case of producing a packaging bag using a packaging material having a relatively high melting point such as a retort packaging bag, although the configuration is relatively simple and low cost. Another object of the present invention is to provide a vertical automatic filling and packaging machine capable of producing a packaging bag at high speed while filling the contents and, by extension, improving production efficiency.

Therefore, the present invention
A vertical seal is applied to the packaging film having at least a base material layer and a sealant layer to be continuously transported, and the lower end side is horizontally sealed while being moved in the transport direction of the packaging film in synchronization with the transport of the packaging film to open the upper part. The packaging bag is sealed by filling the inside of the packaging bag with the upper opening with the contents and then laterally sealing the upper part while moving the packaging film in the transporting direction in synchronization with the transporting of the packaging film. It is a vertical automatic filling and packaging machine to be produced.
In the step before applying the vertical seal, the wrapping film is arranged near both ends in the width direction of the wrapping film with respect to the planned vertical seal portions near both ends in the width direction of the surface on the sealant layer side of the wrapping film along the transport direction of the wrapping film. It is characterized in that it is preheated by surface contact with a preheating roll for vertical sealing that rotates.

In the present invention, guide rolls are provided on the upstream side and the downstream side of the packaging film of the preheating roll for vertical sealing in the transport direction, and the opposite surface of the packaging film is hung with the same surface in contact with these guide rolls. By pressing the vertical sealing preheating roll against the vertical sealing roll, only the planned vertical sealing portion of the packaging film is brought into surface contact with the vertical sealing preheating roll.

The present invention is characterized in that the amount of pressing of the vertical sealing preheating roll against the packaging film can be changed, and the contact length between the packaging film and the vertical sealing preheating roll can be changed.

The present invention is characterized in that a cooling device for cooling the sealing portion is provided in the immediate vicinity of at least one of the vertical sealing device for performing vertical sealing and the horizontal sealing device for performing horizontal sealing on the downstream side in the transport direction. be able to.

In the present invention
The horizontal sealing device that performs horizontal sealing is
Equipped with a horizontal seal bar that extends in the horizontal seal direction and seals horizontally by sandwiching the packaging film.
The lateral seal bar may move in synchronization with the transportation of the packaging film while laterally sealing, and when the lateral sealing operation is completed, the packaging film may be released and then moved to the original position.

In the present invention
The horizontal sealing device that performs horizontal sealing is
A horizontal sealing blade extending in the horizontal sealing direction is provided on the outer periphery, and a pair of horizontal sealing rolls are provided so as to be arranged to face each other with the packaging film sandwiched between them. It can be characterized in that it moves in synchronization with the transport of the film and moves to the original position when the lateral sealing operation is completed.

In the present invention, the melting point of the sheet Zealand layers of packaging film in which the being continuously transported can be characterized in that at 120 ° C. or higher.

According to the present invention, even when a packaging bag is produced using a packaging material having a relatively high melting point such as a retort packaging bag, while being filled with the contents, although the configuration is relatively simple and low cost. It is possible to provide a vertical automatic filling and packaging machine capable of producing packaging bags at high speed and, by extension, improving production efficiency.

It is a front view of the retort packaging bag produced by the vertical automatic filling packaging machine which concerns on one Embodiment of this invention. It is sectional drawing which shows an example of the cross section of the packaging film used for the retort packaging bag of the same as above. It is sectional drawing which shows an example of the cross section of the packaging film used for the general food packaging bag. It is a perspective view which showed by extracting the part of the automatic filling and packaging mechanism of the vertical type automatic filling and packaging machine which concerns on Example 1 of this invention. It is a perspective view which showed by extracting the part of the automatic filling and packaging mechanism of the vertical type automatic filling and packaging machine which concerns on Example 2 of this invention. It is a perspective view which showed by extracting the part of the automatic filling and packaging mechanism of the vertical type automatic filling and packaging machine which concerns on Example 3 of this invention. It is a perspective view which showed by extracting the part of the automatic filling and packaging mechanism of the vertical type automatic filling and packaging machine which concerns on Example 4 of this invention. It is sectional drawing which shows the structural example of the vertical sealing preheating roll device (vertical sealing preheating roll, a pair of guide rolls) which can be used in each Example (cross-sectional view which cut the center in the width direction of a packaging film by a vertical plane). .. A cross-sectional view showing a configuration example (variable pressing amount) of the vertical sealing preheating roll device (vertical sealing preheating roll, pair of guide rolls) that can be used in each embodiment (the center of the packaging film in the width direction is cut by a vertical plane). Sectional view). It is a perspective view which shows the structural example of the vertical seal preheating roll device (the vertical seal preheating roll with a heat insulating part, a pair of guide rolls) which can be used in each Example. It is a front view of the vertical type automatic filling and packaging machine which concerns on Example 5 of this invention.

Hereinafter, an embodiment according to the present invention will be described with reference to the accompanying drawings. The present invention is not limited to the embodiments (Examples) described below.

FIG. 4 is a perspective view showing an automatic filling and packaging mechanism portion of the vertical automatic filling and packaging machine according to the first embodiment. In the drawing, 11 is the body of the packaging machine, and 12 is a preheating roll device for vertical sealing (vertical). Preheating device for sealing) (front side), 13 is a preheating roll device for vertical sealing (preheating device for vertical sealing) (back side), 14 is an intermittent filling material contained in a hopper or the like (not shown) in the packaging bag F14. Contents filling nozzle (intermittent filling) for filling (supplying), 15 is a vertical seal roll device, 16 is a cooling roll device for vertical seal, 17 is a horizontal seal bar device, 18 is a cooling roll device for horizontal seal, Reference numeral 19 denotes a cutter device. As the packaging material (wrapping film), the packaging material for retort pouch (wrapping film) shown in FIGS. 1 and 2 (the sealant layer (the surface where the films are welded and joined) has a melting point of 105 ° C. or higher, preferably (120 ° C or higher) is applied, and retort foods and the like are applied as the filling material (contents), but the filling material (contents) is not limited to these.
The vertical seal is a seal portion extending along the transport direction of the packaging material (wrapping film), and the horizontal seal extends along a direction substantially orthogonal to the transport direction of the packaging material (wrapping film). This is the existing seal portion (see FIG. 1).

Here, the first embodiment is characterized in that the above-mentioned vertical seal preheating roll device (front side) 12 and the vertical seal preheat roll device (back side) 13 are provided.
That is, in the first embodiment, the front side packaging material (wrapping film) F11 supplied from the raw fabric roll or the like around which the packaging material (wrapping film) is wound is preheated before being sent to the vertical seal roll device 15. A vertical seal preheating roll device (front side) 12 is provided on the upstream side in the transport direction of the packaging material (wrapping film) of the vertical seal roll device 15.

Further, the vertical seal preheating roll device (back side) 13 that preheats the back side packaging material (wrapping film) F11'before feeding it to the vertical seal roll device 15 is the packaging material (wrapping film) of the vertical seal roll device 15. ) Is provided on the upstream side in the transport direction.

The packaging material (wrapping film) F11 on the front side and the packaging material (wrapping film) F11'on the back side can be supplied from different raw fabric rolls or the like, and are wound on a common raw fabric roll. The rotating packaging material (wrapping film) is divided in the longitudinal direction into two packaging materials (wrapping film), one of which is the front side packaging material (wrapping film) F11, and the other is the back side packaging. It is also possible to use the material (wrapping film) F11'.

These vertical sealing preheating roll devices (front side) 12 (or vertical sealing preheating roll device (back side) 13) are used with respect to the planned vertical sealing portion of the inner surface of the packaging material (sealant layer side surface: see FIG. 2). , The heated preheating roll 12A (or 13A) rotating along the transport direction of the packaging material (packaging film) is configured to be in surface contact with each other. In addition, since the packaging materials may stick to each other and hinder the filling process in the subsequent process, do not preheat the portion other than the planned vertical seal portion.

The vertical seal preheating roll device (front side) 12 (or the vertical seal preheat roll device (back side) 13) may be configured to be able to be heated to a predetermined temperature by, for example, an electric heater incorporated inside. However, it is also possible to use another method for heating.

As described above, in the first embodiment, the front side packaging material (wrapping film) F11 and the back side packaging material are superposed on the upstream side of the packaging film of the vertical seal roll device 15 in the transport direction and the left and right ends are heat-welded. Since the (wrapping film) F11'is provided with a vertical seal preheating roll device (front side) 12 and a vertical seal preheat roll device (back side) 13, which are preheating devices for vertical sealing, respectively. Even if the packaging material (wrapping film) contains a relatively high melting point sealant layer used for retort foods and the like, the vertical sealing with the vertical sealing roll device 15 can be performed satisfactorily in a short time. can.

Further, in the first embodiment, as shown in FIG. 4, a vertical seal cooling roll device (vertical seal cooling device) 16 is provided in the immediate vicinity of the vertical seal roll device 15 on the downstream side in the transport direction of the packaging film. ing.

After horizontal sealing is performed by the horizontal seal bar device 17 located on the downstream side in the transport direction of the packaging film from the vertical sealing cooling roll device (vertical sealing cooling device) 16, the contents are packed by the content filling nozzle 14. The film is filled in F14 (a packaging bag in which both the left and right ends and the lower end are sealed and only the upper end is opened). Since the outer surface of the material may be pulled and distorted, causing wrinkles and the like, which may deteriorate the sealing property and impair the appearance, etc., in the present embodiment, after vertical sealing by the vertical sealing roll device 15, vertical sealing is performed. The vertical sealing portion (both left and right ends) of the packaging material is cooled by the sealing cooling roll device (vertical sealing cooling device) 16.
As a result, it is possible to solve the above-mentioned problems that the outer surface of the packaging material softened at high temperature is pulled and distorted to cause wrinkles and the like, which deteriorates the sealing property and impairs the appearance.

The lateral seal bar device 17 sandwiches the packaging material while descending (synchronizing (synchronizing) with the descent of the packaging material) following the transportation of the packaging material to perform lateral sealing, releases the packaging material, and then moves upward. It moves and moves (returns) to the original position (see the box motion in FIG. 4). Since the heating time (welding time) can be allocated while the bag is lowered by the length of the bag (the length of the packaging bag in the vertical direction) while being horizontally sealed, it is configured to include a sealant layer having a relatively high melting point. Even if it is a packaging material, the horizontal seal can be satisfactorily applied without slowing down the packaging speed.

Further, in the first embodiment, as shown in FIG. 4, a horizontal seal cooling roll device 18 (horizontal seal cooling device) is provided in the immediate vicinity of the horizontal seal bar device 17 on the downstream side in the transport direction of the packaging film. ing.
In the case of the vertical sealing, the cooling roll device for horizontal sealing (cooling device for horizontal sealing) 18 has a problem of deterioration in sealing property and appearance due to distortion of the sealing portion after high temperature sealing, as described above. As a countermeasure against the above, a cooling roll device for horizontal sealing (cooling device for horizontal sealing) 18 is provided, and by cooling, the sharpness in the cutting process, which is the next process, is improved and the cutting is improved. Can contribute to that.

In the first embodiment, the cooling roll device for vertical sealing (cooling device for vertical sealing) 16 and the cooling roll device for horizontal sealing (cooling device for horizontal sealing) 18 are cooled by the packaging film on the front side and the cooling device on the back side. This can be done by circulating a cooling medium such as cooling air or a coolant in the cooling portion where the packaging films are overlapped and abutted against the welded portion.

The horizontal sealing cooling roll device (horizontal sealing cooling device) 18 is a cooling bar arranged around the roll (rotating body) at a pitch such that it comes into contact with the horizontal sealing portion of the packaging film when rotated. It is configured to be cooled by 18A.

In the first embodiment, when the cutter device 19 is rotated, the cutter 19A cuts the vicinity of the center of the horizontal seal portion of the packaging film along the width direction to form individual packaging bags.

As described above, according to the first embodiment, a mechanism for lengthening the horizontal sealing time by moving the vertical sealing preheating roll device (front side and back side) and the horizontal sealing device up and down is adopted, so that it is relatively easy. In addition, even when a packaging bag is produced using a packaging material having a relatively melting point such as a retort packaging bag, the packaging bag can be produced at high speed while filling the contents, despite the low cost configuration. In the end, it is possible to provide a vertical automatic filling and packaging machine capable of increasing production efficiency.

By the way, in the first embodiment, in order to make the preheating in the vertical seal preheating roll device (front side) 12 and the vertical seal preheating roll device (back side) 13 more efficient, the following configuration is used. It has.
That is, in the first embodiment, as shown in FIG. 4, the contact length of the front packaging material (wrapping film) F11 with respect to the preheating roller 12A of the vertical sealing preheating roll device (front side) 12 can be increased. In addition (that is, the contact length along the transport direction of the packaging film can be increased), a pair of guide rolls 12B and 12C are provided in front of and behind (upstream and downstream) of the preheating roller 12A.

As described above, according to the first embodiment, the packaging film F11 is pushed up in the direction of the preheating roller 12A by the pair of guide rolls 12B and 12C to increase the contact length between the packaging material (packaging film) F11 and the preheating roller 12A. (That is, the contact length along the transport direction of the packaging film can be lengthened), so that the preheating time can be lengthened, and thus the sealant layer of the packaging material (packaging film) can be effectively preheated. can.

The same applies to the preheating roll device (back side) 13 for vertical sealing, in which a pair of guide rolls 13B and 13C are provided in front of and behind (upstream and downstream) of the preheating roller 13A, whereby the contact rolls 13B and 13C are provided along the transport direction of the packaging film. Since the length can be increased, the preheating time can be lengthened, and thus the sealant layer of the packaging material (wrapping film) can be effectively preheated.

As shown in FIG. 8, as compared with the case where the vertical seal preheating roll device 61 (corresponding to 12 or 13) does not provide the pair of guide rolls 62, 64 (corresponding to 12B, 12C or 13B, 13C). When the pair of guide rolls 62 and 64 are provided, the contact length with respect to the vertical sealing preheating roll 63 (corresponding to 12A or 13A) is the line contact state (point contact when viewed from the direction perpendicular to the plane of FIG. 8). ) To h1 (rotation angle of about 93 degrees: surface contact state), and the preheating time of the packaging material (wrapping film) can be lengthened by the extension, thus effectively packaging. The sealant layer of the material (wrapping film) can be preheated.

More specifically, the vertical sealing preheating roll 63 is set so as to be pressed against the packaging film that is brought into contact with the upper surfaces of the pair of guide rolls 62 and 64 and hung, so that the vertical sealing preheating roll 63 is packaged. It is configured to bring the film into surface contact.

Further, as shown in FIG. 9, the contact length is changed (shorter or longer than h1) by changing the relative position (pressing amount) of the pair of guide rolls 62 and 64 with respect to the vertical sealing preheating roll 63. For example, it can be lengthened up to h2 as shown in FIG.
That is, the preheating time of the packaging material (wrapping film) can be controlled to an appropriate length by configuring the pair of guide rolls 62 and 64 so that the relative positions of the pair of guide rolls 62 and 64 with respect to the vertical sealing preheating roll 63 can be changed. Therefore, it is possible to effectively preheat the sealant layer of the packaging material (packaging film) optimally without excess or deficiency.

That is, according to the first embodiment, it is effective to bring the portion of the packaging material (wrapping film) to be continuously transported to be sealed vertically into surface contact with a preheating roll that rotates along the transport direction of the packaging material (wrapping film). After preheating, the vertical sealing device is used to apply vertical sealing to the planned vertical sealing part. Therefore, the time required for vertical sealing in the vertical sealing device can be shortened, and the horizontal sealing device can be used. Is configured to follow (synchronize or synchronize) with the transport of the packaging material and to apply the horizontal seal while moving in the transport direction of the packaging material, so that the horizontal seal time can be secured. Even when a packaging bag is produced using a packaging material with a relatively melting point, the packaging bag can be produced at high speed while filling the contents, and by extension, vertical automatic filling can improve production efficiency. A packaging machine can be provided.

Further, regarding the vertical seal preheating roll device, as shown in FIG. 10, between the vertical seal preheat roll 73 and the vertical seal preheat roll 74 that come into contact with the vertical seal planned portion to be subjected to the vertical seal. It can be configured to include a heat insulating portion 75 having substantially the same outer diameter as the above.
By providing such a heat insulating portion 75, it is possible to suppress the occurrence of intermediate slack near the center in the longitudinal direction of the packaging film by filling the gap between the vertical sealing preheating roll 73 and the vertical sealing preheating roll 74. Therefore, it is possible to suppress transport defects such as skewing of the packaging film, and it is possible to maintain high production quality of the packaging bag.

FIG. 5 is a perspective view showing an automatic filling and packaging mechanism portion of the vertical automatic filling and packaging machine according to the second embodiment. In the drawing, 21 is the body of the packaging machine and 22 is a preheating roll device for vertical sealing (front). (Side), 23 is a preheating roll device for vertical sealing (back side), 24 is a content filling nozzle for continuously filling (supplying) the filling material contained in a hopper or the like (not shown) into the packaging bag F24. (Continuous filling), 25 is a vertical seal roll device, 26 is a cooling roll device for vertical seal, 27 is a first horizontal seal device (roll method), 28 is a second horizontal seal device (seal bar method), and 29 is for horizontal seal. The cooling roll device, 30 is a cutter device.

In the second embodiment, the second horizontal seal device (seal bar method) 28 having the same configuration as the horizontal seal bar device 17 of the first embodiment with respect to the automatic filling and packaging mechanism portion of the first embodiment illustrated in FIG. A first horizontal sealing device (roll method) 27 is added to the upstream side in the transport direction of the packaging film. Other configurations are the same as in the first embodiment.

That is, in the second embodiment, as shown in FIG. 5, the first lateral sealing device (roll method) 27 performs a sealing (welding) operation with the planned portion of the lateral sealing directed from the bottom to the top. A temporary horizontal seal is applied while squeezing the contents (particularly liquid components), and then a complete horizontal seal is applied by the second horizontal seal device (seal bar method) 28.

As described above, in the second embodiment, the first lateral sealing device (roll method) 27 squeezes the contents (particularly the liquid component) while exhibiting various effects similar to those of the first embodiment described above. Since the seal is applied and then the complete horizontal seal is applied by the second horizontal seal device (seal bar method) 28, continuous filling without stopping the filling of the contents (liquid, etc.) during automatic filling and packaging is performed. (Continuous filling other than intermittent filling as in Example 1) can be adapted.

FIG. 6 is a perspective view showing an automatic filling and packaging mechanism portion of the vertical automatic filling and packaging machine according to the third embodiment. In the drawing, 41 is the body of the packaging machine and 42 is a preheating roll device for vertical sealing (front). (Side), 43 is a preheating roll device for vertical sealing (back side), 44 is a content filling nozzle (supply) for continuously filling (supplying) the filling material contained in a hopper or the like (not shown) into the packaging bag F44. (Continuous filling), 45 is a vertical seal roll device, 46 is a vertical seal cooling roll device, 47 is a vertical moving horizontal seal device (roll method), 48 is a horizontal seal cooling roll device, and 49 is a cutter device.

In the third embodiment, the automatic filling and packaging mechanism portion of the first embodiment illustrated in FIG. 4 can be moved up and down (moved) in the vertical direction (vertical direction) instead of the horizontal seal bar device 17 of the first embodiment. A vertical movement horizontal sealing device (roll type) 47 is provided.

In the third embodiment, as shown in FIG. 6, a vertical movement lateral sealing device (roll method) 47 is continuously provided (and under the F44) in order to create a bag-shaped packaging film F44 having an upper opening. When the pair of horizontal seal rolls 47A and 47B are brought close to each other to sandwich the packaging film for horizontal sealing (to apply the upper horizontal seal of the packaging bag), the pair of horizontal seal rolls 47A and 47B have a transport speed (wrapping film). Since it is configured to descend together with the base while rotating in synchronization with (synchronizing with the descending speed of), it is possible to apply a horizontal seal while squeezing the contents.

Then, the vertical movement horizontal seal device (horizontal seal roll method) 47 does not come into contact with the packaging bag at a rotation angle position (rotation angle position where the seal blades 47a and 47b do not exist) (in other words, when the horizontal seal operation is completed). The pair of horizontal seal rolls 47A and 47B are moved upward together with the base in a rotation-free state to move (return) to the original position to prepare for the next horizontal seal operation. When moving (returning) to the original position, the pair of horizontal seal rolls 47A and 47B should be moved upward with the packaging film released by widening the mutual distance to move (return) to the original position. Is also possible.

As described above, in the third embodiment, the vertical movement horizontal sealing device (roll method) 47 squeezes the contents (particularly the liquid component) while exhibiting various effects similar to those of the first embodiment described above. Since it can be applied, it can be adapted to continuous filling that does not stop filling of contents (liquid, etc.) during automatic filling and packaging.

FIG. 7 is a perspective view showing an automatic filling and packaging mechanism portion of the vertical automatic filling and packaging machine according to the fourth embodiment, in which 51 is the body of the packaging machine, 52 is the vertical seal roll device, and 53 is the ear. The take slitter device (also functions as a cooling roll for vertical sealing), 54 is a slitter receiving cooling roll, and 55 is a slitter blade cooling roll. Other configurations can be the same as any of the above-described Examples 1 to 3.

In the fourth embodiment, as shown in FIG. 7, one of the slitter blades is cooled by sandwiching the packaging film F51 of the pair of vertical sealing cooling rolls 16 (or 26, 36, 46) of the first embodiment in the thickness direction. The roll 55 is configured to function as a slitter blade while functioning as a cooling roll for vertical sealing. The other slitter receiving cooling roll 54 is configured to receive the slitter blade and improve the sharpness while functioning as a cooling roll for vertical sealing.

As a result, even if the edges of the overlapping front side and back side packaging materials (wrapping film) are slightly displaced, the displaced portion of the edge of the packaging bag can be slit as an ear. While functioning as a cooling roll for vertical sealing, the appearance of the packaging bag can be improved.

FIG. 11 is a front view of the vertical automatic filling and packaging machine according to the fifth embodiment. In the drawing, 81 is the body of the packaging machine, 84 is a preheating roll device for vertical sealing (preheating device for vertical sealing), and 86 is a preheating device for vertical sealing. The band-shaped packaging film F83 is bent vertically downward by the final tension guide roll 85, and the packaging film F84 is folded in half in the width direction. Contents filling nozzle for filling (supplying) into, 88 is a vertical seal roll device, 89 is a cooling roll device for vertical seal, 90 is a vertical moving horizontal seal device (roll method), 91 is a cooling roll device for horizontal seal, 92 is a cutter device, and 93 is an operation panel (control device).

As shown in FIG. 11, in Example 5, the front side wrapping film F11 and the back side wrapping film F11'as in Example 1 and the like are bonded together, and the left and right ends are vertically sealed. Instead of forming a bag shape by laterally sealing the film, one wrapping film wound around the wrapping film roll 81 is folded back along the longitudinal center of the wrapping film via a folding guide 86. An example is a vertical automatic filling and packaging machine of a type in which the ends are bonded to each other (vertical sealing is applied) and then horizontally sealed to form a bag shape and fill the contents. Regarding the vertical seal roll device 88, the vertical seal cooling roll device (vertical seal cooling device) 89, the vertical moving horizontal seal bar device 90, and the horizontal seal cooling roll device 91 of the fifth embodiment, the first and other embodiments are performed. A configuration similar to the example can be adopted.

The packaging bag completed in Example 5 is a three-way sealed packaging bag F90 in which the right end is folded back, the left end is vertically sealed, and the upper and lower ends are horizontally sealed in FIG. In addition, Examples 1 to 4 are examples in the case of producing a four-sided seal packaging bag as shown in FIG. 1, in which both left and right ends are vertically sealed and the upper and lower ends are horizontally sealed.

In the fifth embodiment as well, as in the first embodiment, the vertical seal pre-heating for preheating the left end (planned vertical seal portion) of the packaging film F82 on the upstream side in the transport direction of the packaging film of the vertical seal roll device 88. Since the preheating roll device 88 for vertical sealing, which is a heating device, is provided, even if the packaging material (wrapping film) is composed of a relatively high melting point sealant layer used for retort foods and the like, it is vertically The vertical seal of the seal roll device 88 can be satisfactorily applied in a short time.

Further, also in the fifth embodiment, as shown in FIG. 11, a cooling roll device for vertical sealing (cooling device for vertical sealing) 89 is provided in the immediate vicinity of the downstream side of the packaging film of the vertical seal roll device 88 in the transport direction. There is. Therefore, also in the fifth embodiment, when the contents are filled in the packaging film F87 by the content filling nozzle 87, the bag-shaped packaging film F87 swells at a stretch and the outer surface of the packaging material which has become softer at a higher temperature than before is pulled. By cooling the vertical sealing portions (both left and right ends) of the packaging material, it is possible to reliably avoid the risk that the packaging material will be distorted and wrinkled, resulting in deterioration of the sealing property and spoiling the appearance.

Further, also in the fifth embodiment, since the vertical movement horizontal seal bar device 90 is horizontally sealed in synchronization with the descending speed of the packaging film F88, the bag length (the vertical length of the packaging bag) is provided while the horizontal seal is performed. ) Can be used as the heating time (welding time), so even if the packaging material contains a relatively high melting point sealant layer, the horizontal seal can be applied without slowing down the packaging speed. Can be applied well.

Further, also in the fifth embodiment, as shown in FIG. 11, a cooling roll device 91 for horizontal sealing (cooling device for horizontal sealing) is located immediately on the downstream side in the transport direction of the packaging film of the vertical moving horizontal sealing bar device 90. It is equipped. For this reason, it is possible to take measures against deterioration of sealing property and appearance problems due to distortion of the sealing portion after high temperature sealing, and by cooling, the sharpness in the cutting process, which is the next process, is improved. It can contribute to making the cut good.

As described above, also in the fifth embodiment, the mechanism for extending the horizontal sealing time by moving the vertical sealing preheating roll device and the horizontal sealing device up and down is adopted, so that the retort can be constructed in a relatively simple and low cost manner. Even when a packaging bag is produced using a packaging material having a relatively melting point such as a packaging bag, the packaging bag can be produced at high speed while filling the contents, which in turn improves production efficiency. It is possible to exert an action effect such as being able to provide a vertical automatic filling and packaging machine that can be provided.

In each of the above-described embodiments, a case where the vertical sealing preheating roll is brought into contact with the sealant side of the packaging film (the side facing the stacked packaging films, that is, the inside of the packaging bag) to preheat the packaging film will be illustrated and described. However, if it is possible to preheat the film, it is also possible to bring the vertical sealing preheating roll into contact with the base base material side (outside of the packaging bag) of the packaging film to preheat the film.

The embodiments described above are merely examples for explaining the present invention, and it goes without saying that various modifications can be made without departing from the gist of the present invention.

Claims (7)

A vertical seal is applied to the packaging film having at least a base material layer and a sealant layer to be continuously transported, and the lower end side is horizontally sealed while being moved in the transport direction of the packaging film in synchronization with the transport of the packaging film to open the upper part. The packaging bag is sealed by filling the inside of the packaging bag with the upper opening with the contents and then laterally sealing the upper part while moving the packaging film in the transporting direction in synchronization with the transporting of the packaging film. It is a vertical automatic filling and packaging machine to be produced.
In the step before applying the vertical seal, the wrapping film is arranged near both ends in the width direction with respect to the planned vertical seal portions near both ends in the width direction of the surface of the wrapping film on the sealant layer side along the transport direction of the wrapping film. A vertical automatic filling and packaging machine characterized in that preheating is performed by surface-contacting a preheating roll for vertical sealing that rotates in a vertical manner. Guide rolls are provided on the upstream side and the downstream side of the packaging film of the preheating roll for vertical sealing in the transport direction, and the same surface is brought into contact with these guide rolls and hung vertically with respect to the opposite surface of the packaging film. The vertical automatic filling and packaging machine according to claim 1, wherein the preheating roll for sealing is pressed so that only the planned vertical sealing portion of the packaging film is brought into surface contact with the preheating roll for vertical sealing. The first or second aspect of the present invention, wherein the amount of pressing of the vertical sealing preheating roll against the packaging film is changeable, and the contact length between the packaging film and the vertical sealing preheating roll is changeable. Vertical automatic filling and packaging machine. Claims 1 to 1, characterized in that a cooling device for cooling the sealing portion is provided in the immediate vicinity of at least one of the vertical sealing device for performing vertical sealing and the horizontal sealing device for performing horizontal sealing on the downstream side in the transport direction of the packaging film. The vertical automatic filling and packaging machine according to any one of claim 3. The horizontal sealing device that performs horizontal sealing is
Equipped with a horizontal seal bar that extends in the horizontal seal direction and seals horizontally by sandwiching the packaging film.
Claims 1 to 1, wherein the horizontal seal bar moves in synchronization with the transportation of the packaging film while laterally sealing, and when the horizontal sealing operation is completed, the packaging film is released and then moved to the original position. Item 4. The vertical automatic filling and packaging machine according to any one of items 4. The horizontal sealing device that performs horizontal sealing is
A horizontal sealing blade extending in the horizontal sealing direction is provided on the outer periphery, and a pair of horizontal sealing rolls are provided so as to be arranged facing each other with the wrapping film sandwiched between them. The vertical automatic filling and packaging machine according to any one of claims 1 to 4, wherein the film moves in synchronization with the transportation of the film and moves to the original position when the horizontal sealing operation is completed. The vertical automatic filling and packaging machine according to any one of claims 1 to 6, wherein the sealant layer of the continuously conveyed packaging film has a melting point of 120 ° C. or higher.

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