JP2020196458A - Pouch and manufacturing method of pouch - Google Patents

Abstract

To provide a pouch that has a simple structure and can be easily sealed after opened once and a manufacturing method of a pouch capable of efficiently manufacturing such pouch.SOLUTION: A pouch includes a body portion 3 including a first face 1 and a second face 2 facing each other, and a joined portion 7 formed on one face of the body portion 3. The body portion 3 includes a first edge 11, a second edge 12 facing the first edge 11, and a third edge 13 and a fourth edge 14 extending between the first edge 11 and the second edge 12. The joined portion 7 is provided across the third edge 13 and the fourth edge 14 of the body portion 3. The joined portion 7 includes a proximal portion 7a, and a distal portion 7b facing the proximal portion 7a. The body portion 3 includes a first portion 3a connected to the proximal portion 7a of the joined portion 7 and extending toward the first edge 11, and a second portion 3b connected to the proximal portion 7a of the joined portion 7 and extending toward to the second edge 12. The proximal portion 7a of the joined portion 7 is close to the first edge 11, and is provided at a position separated from the first edge 11 by 30 mm or more.SELECTED DRAWING: Figure 7

Description

The present invention relates to a pouch that can be easily resealed after opening.

Conventionally, as a packaging bag for storing foods and the like inside, generally, a so-called pillow type bag in which the packaging material is sealed at the back gassho part and at the top and bottom parts, or two bags are used. A four-sided seal in which the packaging materials are overlapped to seal the four sides, or a three-sided seal in which the packaging material is bent at the center and the three sides other than the bent part are sealed is often used. (See Patent Document 1). When opening various bags as described above, it is recommended to grasp the surface of the packaging material near the seal part and pull it to peel off the back seal part (gassho part seal part) or the top or bottom seal part. It's normal.

Jikkenhei 3-114735

If the contents of the packaging bag are snacks, etc., you may want to leave some of them and eat them later instead of eating them all at once. In such a case, there is a desire to temporarily seal and close the opening. However, the conventional packaging bag has a problem that it has a simple structure and is difficult to close easily.

Therefore, the present invention provides a pouch that has a simple structure but can be easily sealed after being opened once, and a method for manufacturing a pouch that can efficiently manufacture such a pouch. The task is to do.

In order to solve the above problems, the present invention
Steps to unwind the packaging material from winding,
A step of winding the unwound packaging material around a filling guide having a tubular portion extending in the vertical direction and superimposing the ends along the flow direction of the packaging material.
A step of heat-sealing a predetermined area from the ends to form a gassho part,
The gassho portion formed along the flow direction of the packaging material is positioned so as to be at a position 30 mm or more away from the side portion of the two side portions of the packaging material along the flow direction, whichever is closer. Steps and
A step of forming a seal portion downward along a direction intersecting the flow direction of the packaging material,
The step of filling the contents from above with the seal portion formed below as the bottom,
The step of forming the seal portion above the seal portion formed below and
Provided is a method for producing a pouch, which is characterized by having.

Further, the method for producing a pouch of the present invention is:
Between the step of positioning and the step of forming the seal portion below, a backing plate is applied to the side portion of the two side portions in the flow direction of the packaging material, which is far from the gassho portion, and folded. It may further have a step of forming a portion.

Further, the method for producing a pouch of the present invention is:
The packaging material may be a laminated film in which a stretched polypropylene film and a vapor-deposited non-stretched polypropylene film are laminated.

In addition, the present invention
A pouch having a main body portion composed of a first surface and a second surface facing each other, and a gassho portion formed on one surface of the main body portion.
The main body portion has a first edge, a second edge facing the first edge, and a third edge and a fourth edge extending between the first edge and the second edge.
The gassho portion is provided from the third edge to the fourth edge of the main body portion.
The gassho portion has a base portion and a tip portion facing the base portion.
The main body portion is connected to the base portion of the gassho portion and extends toward the first edge, and the main body portion is continuously provided at the base portion of the gassho portion and extends toward the second edge. Including parts,
Provided is a pouch characterized in that the base portion of the gassho portion is close to the first edge and is provided at a position separated from the first edge by 30 mm or more.

Further, the pouch of the present invention is
A gusset portion may be provided on the second edge of the main body portion.

Further, the pouch of the present invention is
The packaging material constituting the pouch may be a laminated film in which a stretched polypropylene film or a vapor-deposited non-stretched polypropylene film is laminated.

According to the present invention, it is possible to provide a pouch that can be easily sealed after being opened once, and a pouch that can be easily opened by efficiently producing such a pouch. ..

It is a perspective view which shows the pouch which concerns on one Embodiment of this invention. It is a front view which shows the pouch which concerns on one Embodiment of this invention. It is a back view which shows the pouch which concerns on one Embodiment of this invention. It is sectional drawing which shows an example of the layer structure of a packaging material. It is a figure which shows the filling machine for carrying out the manufacturing method of a pouch. It is a flowchart which shows the manufacturing method of the pouch which concerns on this embodiment. It is a perspective view which shows the state before and after opening of a pouch by cutting out the gassho part 7.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a perspective view showing a pouch according to an embodiment of the present invention. FIG. 2 is a front view showing a pouch according to an embodiment of the present invention. FIG. 3 is a rear view showing a pouch according to an embodiment of the present invention. The pouches of the present embodiment shown in FIGS. 1 to 3 show a pouch in a state in which the contents are filled and sealed (a state in which the contents are filled). However, the illustration of the contents is omitted because the drawing becomes complicated. Further, in FIGS. 2 and 3, the sealed portion is shaded, but is omitted in FIG. 1. It should be noted that FIGS. 2 and 3 show a state in which the gassho portion 7 is tilted so that the tip portion 7b of the gassho portion 7 faces downward. The pouch of the present embodiment has a main body portion 3 composed of the first surface 1 and the second surface 2 facing each other, and a gassho portion 7 formed on one surface (first surface 1) of the main body portion 3. ing. It has a rectangular shape in the front view seen from the first surface 1 side and the back view seen from the second surface 2 side. In the present embodiment, the rectangular shape is not only a shape in which each corner has a corner, but also a rectangle in which the four corners are right angles, and the four corners of the rectangle are chamfered to form an arc shape or a curved shape that is convex outward. It is a concept that includes things. In the present invention, the pouch is a concept that includes not only a pouch in a state in which the contents are filled but also a pouch in a state in which the contents are not filled.

As described above, the pouch of the present embodiment has a main body portion 3 and a gassho portion 7. Further, the main body portion 3 has a first surface 1 and a second surface 2, and the gassho portion 7 is formed on the first surface 1 side. The perspective view of FIG. 1 is a view seen from the second surface 2 side on which the gassho portion 7 is not formed, and the position of the base portion 7a of the gassho portion 7 formed on the first surface 1 side by a broken line is shown. Shown. As shown in FIGS. 1 to 3, the main body portion 3 has a first edge 11, a second edge 12 facing the first edge 11, and a third edge extending between the first edge 11 and the second edge 12. It has 13 and a fourth edge 14. Further, the gassho portion 7 is provided from the third edge 13 to the fourth edge 14 of the main body portion 3. The gassho portion 7 has a base portion 7a and a tip portion 7b facing the base portion 7a. The gassho portion 7 is formed by superimposing opposing packaging materials from the base portion 7a to the tip portion 7b. The main body portion 3 is connected to the base portion 7a of the gassho portion 7, and is connected to the first portion 3a extending toward the first edge 11 and the base portion 7a of the gassho portion 7, and extends toward the second edge 12. Includes 2 parts 3b and. Of the two broken lines shown in FIG. 3, the upper broken line is the position corresponding to the base portion 7a of the gassho portion 7 on the first surface 1 side. The lower two-dot chain line is a position corresponding to the tip portion 7b of the gassho portion 7 on the first surface 1 side. The gassho portion 7 is provided at a position closer to the first edge 11. Specifically, the base portion 7a of the gassho portion 7 is formed at a position closer to the first edge 11 than the second edge 12.

In the present embodiment, the opening means 17 is formed so that the first edge 11 side can be easily cut for opening. In the present embodiment, the opening means 17 is a notch and is provided in the third edge sealing portion 13a and the fourth edge sealing portion 14a. The opening means is not limited to the notch as in the opening means 17 of the present embodiment, and may be a notch or a group of scars penetrating a part or all of the packaging material. These opening means may be provided only on either one of the third edge sealing portion 13a and the fourth edge sealing portion 14a. Alternatively, the opening means may be an easy-opening line extending from the third edge sealing portion 13a toward the fourth edge sealing portion 14a. The easy-opening wire may be a half-cut wire that penetrates the base film and does not penetrate the sealant film. The half-cut line may be formed by using a cutting tool or by laser processing. Further, the half-cut line may be a line extending continuously or a line extending intermittently. Further, the half-cut line may be provided so as to extend from the third edge 13 which is one side edge of the pouch to the fourth edge 14 which is the other side edge.

L1 and L2 shown in FIG. 2 indicate distances. The distance L1 is the distance between the base portion 7a of the gassho portion 7 and the first edge 11, and the distance L2 is the distance between the base portion 7a of the gassho portion 7 and the opening means 17. The distance L2 between the base portion 7a of the gassho portion 7 and the opening means 17 is preferably 20 mm or more. When the portion on the first edge 11 side of the opening means 17 is cut off and opened, if the distance L2 between the opening means 17 at the upper end and the base 7a of the gassho portion 7 is less than 20 mm, the base 7a of the gassho portion 7 is opened. When the first portion 3a is folded back as a base point, it becomes difficult to grasp and it becomes easy to return after folding back. There is no particular upper limit to the distance L2, and it is set within a range in which there is practically no problem in use or manufacture as a pouch. The distance L1 between the base portion 7a of the gassho portion 7 and the first edge 11 is naturally larger than the distance L2. The difference between the distance L1 and the distance L2 is appropriately set so that the opening means 17 can easily cut off the first edge 11 side. Considering the difference between the distance L1 and the distance L2, when the distance L2 is 20 mm or more, the distance L1 is preferably 30 mm or more. When the distance L1 is 30 mm or more, the distance L2 is 20 mm or more even when the first edge 11 side is cut out with a width of 10 mm by the opening means 17, and when the first portion 3a is folded back, it is easy to grasp and folded back. After that, the conditions for making it difficult to return are satisfied. In the present embodiment, the distance L1 = 40 mm and the distance L2 = 30 mm. Therefore, the difference is 10 mm, and when the opening means 17 and 17 are cut straight, the first edge 11 side is cut with a width of 10 mm, and the first portion 3a of the main body 3 remains with a width of 30 mm corresponding to the distance L2. become. The size of the entire pouch can be arbitrarily determined regardless of the values of the distances L1 and L2, but in the present embodiment, the distance from the first edge 11 to the second edge 12 is 160 mm.

On the second edge 12 side, the packaging material is folded to form a folding portion 5, and a gusset portion is formed between the second edge 12 of each of the first surface 1 and the second surface 2. The pouch of the present embodiment can be made to stand on its own as a standing pouch by making the second edge 12 side having the gusset portion downward.

<Components>
The pouch of the present embodiment is formed of a single packaging material. One packaging material is heat-sealed and joined so that one end and the other end are overlapped to form the tip 7b of the gassho portion 7. The gassho portion 7 is sealed over the entire area from the base portion 7a to the tip portion 7b. Further, the third edge 13 and the fourth edge 14 are heat-sealed and joined. In this embodiment, either the third edge 13 or the fourth edge 14 is formed after filling the contents.

<Seal part>
The pouches of the present embodiment shown in FIGS. 1 to 3 show the state after being sealed. As shown in FIGS. 1 to 3, the pouch of the present embodiment after sealing is heat-sealed at the third edge 13, the fourth edge 14, and the gassho portion 7 to form a sealed portion. In FIGS. 2 and 3, heat seals have already been performed, and each of the formed seal portions is shaded with diagonal lines. The third edge seal portion 13a is formed so as to include the third edge 13, and the fourth edge seal portion 14a is formed so as to include the fourth edge 14. Further, in the gassho portion 7, a seal portion is formed from the third edge 13 to the fourth edge 14 of the main body portion 3, and a seal portion is formed from the base portion 7a to the tip portion 7b.

<Accommodation>
The first edge 11 and the second edge 12 are formed as folded portions of the packaging material. The accommodating portion 8 is defined by the inner edge of the first edge 11, the second edge 12, the third edge sealing portion 13a, and the inner edge of the fourth edge sealing portion 14a. The third edge seal portion 13a and the fourth edge seal portion 14a are formed so that their inner edges are substantially linear. Therefore, the seal widths of the third edge seal portion 13a and the fourth edge seal portion 14a are constant at W. The seal widths of the third edge seal portion 13a and the fourth edge seal portion 14a are directions (vertical directions in FIGS. 2 and 3) in which the third edge seal portion 13a and the fourth edge seal portion 14a extend (vertical direction). The width in the left-right direction in FIGS. 2 and 3).

<Contents>
The contents to be accommodated by the pouch according to the present embodiment are not particularly limited, but are suitable for accommodating solid matter having a certain size. In particular, it can be suitably used when a snack confectionery or the like is used as the content. When the snack food is left uneaten, the opening can be closed by folding back the folded portion. It should be noted that even powder can be applied.

<Details of packaging materials>
The first surface 1, the second surface 2, and the gassho portion 7 of the pouch can be made of a packaging material that is a laminated film. As described above, in the present embodiment, it is basically composed of one packaging material. The packaging material used in this embodiment is a laminate containing at least a base material and a sealant film from the outside. Paper or a plastic film can be used as the base material. As the base material, it is particularly preferable to use two or more stretched plastic films stretched uniaxially or biaxially in layers. For example, as the packaging material, it is preferable that the first stretched plastic film, the second stretched plastic film, and the sealant film are laminated in this order from the outer surface side.

The first stretched plastic film, the second stretched plastic film, and the sealant film can be laminated by forming an adhesive layer by, for example, a dry laminating method using an adhesive. FIG. 4 is a cross-sectional view showing an example of the layer structure of the packaging material. In FIG. 4, the upper side shows the outer surface side, and the lower side shows the inner surface side (the side in contact with the contents). As shown in FIG. 4, in the packaging material 30 used in the present embodiment, the first stretched plastic film 31, the second stretched plastic film 32, and the sealant film 33 are laminated in this order from the outer surface side. The first stretched plastic film 31 and the second stretched plastic film 32 are bonded by the adhesive layer 34, and the second stretched plastic film 32 and the sealant film 33 are bonded by the adhesive layer 35.

When the pouch requires heat resistance, the first stretched plastic film 31 and the second stretched plastic film 32 are preferably made of a heat-resistant material. For example, as the material of the first stretched plastic film 31 and the second stretched plastic film 32, polyester films such as polyethylene terephthalate and polybutylene terephthalate, polyamide films such as nylon, polypropylene films and the like can be used. Both have a thickness of about 10 μm to 50 μm. The same material can be used for the first stretched plastic film 31 and the second stretched plastic film 32, but it is preferable to use different materials. The first stretched plastic film 31 and the second stretched plastic film 32 are preferably biaxially stretched.

The sealant film 33 is arranged on the innermost side of the packaging material 30 when the bag is made into a pouch. As the material of the sealant film 33, polyolefin resins such as polyethylene, polypropylene, ethylene / vinyl acetate copolymer, ethylene / propylene block copolymer, and propylene / ethylene block copolymer can be adopted. The sealant film 33 is preferably unstretched.

The thickness of the sealant film 33 is preferably 15 μm or more, more preferably 18 μm or more. The thickness of the sealant film 33 is preferably 40 μm or less, more preferably 30 μm or less.

The packaging material 30 may include a printing layer and other layers. The print layer is provided to display the product contents, give an aesthetic impression, and display the cut portion. The printing layer is formed by a printing ink containing a binder and a pigment.

The other layer may be provided on the outside of the base film (first stretched plastic film 31, second stretched plastic film 32), may be provided between the base film, or may be provided between the base films. It may be provided between the sealant film 33 and the sealant film 33. As the other layer, an appropriate layer is selected according to the required functions such as water vapor and other gas barrier properties and light shielding properties. For example, when the other layer is a gas barrier layer, a vapor deposition layer of a metal such as aluminum, a metal oxide such as aluminum oxide, or an inorganic oxide such as silicon oxide is provided. The thin-film deposition layer may be laminated on the base film or may be vapor-deposited on the sealant film 33. Alternatively, a metal foil such as aluminum may be provided. In addition, a resin layer having a gas barrier property such as an ethylene / vinyl alcohol copolymer (EVOH), a polyvinylidene chloride resin (PVDC), or an aromatic polyamide such as nylon MXD6 may be provided. Each layer can be laminated by using a dry laminating method, a melt extrusion method, or the like.

Specific examples of preferable packaging materials are shown below.
・ OPP (stretched polypropylene film) 20 μm / printing layer / AC / PE 10 μm / VMPET (metal-deposited polyethylene terephthalate film) 12 μm / AC / PE 10 μm / CPP (non-stretched polypropylene film) 18 μm
In this configuration, the packaging material is a laminated film in which a stretched polypropylene film, a condensed polyethylene terephthalate film, and a non-stretched polypropylene film are laminated in this order.

・ OPP 20 μm / adhesive layer / VMCPP 30 μm
In this configuration, the packaging material is a laminated film in which a stretched polypropylene film and a vapor-deposited non-stretched polypropylene film are laminated.
In the case of this configuration, the laminated film, which is a packaging material, has little repulsion and is suitable for folding back the first portion 3a of the main body 3. As the VMCPP, aluminum-deposited CPP is preferable. It has less repulsion than the above-mentioned OPP / print layer / AC / PE / VMPET / AC / PE / CPP configuration.
The specifications such as OPP / printing layer / AC / PE / VMPET / AC / PE / CPP and OPP / adhesive layer / VMCPP have a high resistance to piercing, and therefore have an advantage that holes are not easily pierced by piercing with a hard content. .. Further, since these use CPP or VMCPP as a sealant layer, oil stains can be prevented.
It is particularly suitable to use the above as the packaging material for the pouch of the present embodiment when resealing and storing a relatively greasy and hard snack confectionery.

In addition, preferable packaging materials include those having the following configurations.
・ PET (polyethylene terephthalate) 12 μm / adhesive layer / VMCPP 30 μm
・ OPP 20 μm / adhesive layer / CPP 18 μm
・ ONY (stretched nylon film) 15 μm / PE (polyethylene film) 30 μm
-Print layer / paper 50 μm / PE 10 μm / VMPET 12 μm / AC / PE 10 μm / CPP 18 μm
-Printing layer / paper 50 μm / PE 10 μm / aluminum foil 7 μm / PE 30 μm
-PET 12 μm / PE 15 μm / Aluminum foil 7 μm / PE 30 μm
Among the above-mentioned plurality of specific examples, it is desirable to use a configuration including aluminum foil or paper in terms of shape retention of the pouch.

When the aluminum foil is provided as the intermediate layer, when the first portion 3a of the main body portion 3 is folded back, the force to return to the original portion is suppressed, and the state in which the opening is closed can be easily maintained. The packaging material is not limited to the above specific example, and other configurations may be used.

As the packaging material, a third stretched plastic film (not shown) may be further provided. Further, the first stretched plastic film 31 is preferably a polypropylene film or a polyester film. The second stretched plastic film 32 and the third stretched plastic film can be a polyester film or a polyamide film. As the polyester film, a film containing a polycondensate of terephthalic acid and diol as a main component can be used, and as the polycondensate, polyethylene terephthalate, which is a polycondensate of terephthalic acid and ethylene glycol, or terephthalic acid Examples thereof include polybutylene terephthalate, which is a polycondensate of 1,4-butanediol. As the polyamide film, a nylon film can be used. A thin-film deposition layer and a gas barrier coating film may be provided on the second stretched plastic film 32 instead of the first stretched plastic film 31.

<Manufacturing method>
Next, a method for producing a pouch using the above-mentioned packaging material 30 will be described. FIG. 5 is a diagram showing a filling machine for carrying out a method for manufacturing a pouch. In the filling machine shown in FIG. 5, the pouch can be manufactured while filling the contents. In FIG. 5, 20 is a take-up roll, 22 is a filling guide, 23 is a center sealer, 24 is a top and end sealer, and 25 is a backing plate. The take-up roll 20 is a roll of a long packaging material 30, from which the packaging material 30 is unwound and supplied. The filling guide 22 has a tubular portion extending downward from above. As shown in FIG. 5, the filling guide 22 has a substantially cylindrical shape at the upper portion and a flat tubular shape toward the lower side. In the example of FIG. 5, the upper portion of the filling guide 22 is exposed, but the lower portion is in a state of being covered with the packaging material 30. Since the packaging material 30 is wound around the outside of the flat tubular shape below the filling guide 22, both sides K1 and K2 along the flow direction are specified in the packaging material 30.

The center sealer 23 is arranged at a predetermined position near the filling guide 22, and heat-seals a predetermined area from the overlapped both ends of the packaging material 30 wound around the filling guide 22 along the flow direction to form a gassho. It is a means for forming the part 7. The top-and-end sealer 24 is a device that heat-seals along the direction intersecting the flow direction of the packaging material 30 to form the third edge sealing portion 13a and the fourth edge sealing portion 14a. The top-and-end sealer 24 heat-seals along the direction intersecting the flow direction of the packaging material 30, and at the same time, separates the packaging material 30 vertically at the sealed portion. As a result, the packaging material 30 located below is sealed at the top to form a sealed pouch. On the other hand, the packaging material 30 located above forms the bottom of the pouch. The backing plate 25 is a plate that is arranged below the filling guide 22 and extends in a direction (for example, a horizontal direction) that intersects the flow direction of the packaging material 30. Of the two side portions K1 and K2 of the packaging material 30, the tip is installed so as to be located on the central side in the horizontal direction from the side portion K2 on the side farther from the gassho portion 7. When the flowing packaging material 30 hits the backing plate 25, the side portion K2 on the side far from the gassho portion 7 is folded inward, and the folded portion 5 is formed. The orientation of the pouch in FIGS. 1 to 3 is different from the orientation of the pouch in FIGS. 5, and the first edge 11 located above the pouch in FIGS. 1 to 3 is located on the right side of the pouch in FIG. doing.

FIG. 6 is a flowchart showing a method for manufacturing a pouch according to the present embodiment. First, one piece of packaging material 30 is prepared as a long raw fabric roll. The packaging material 30 is unwound from the take-up roll 20 and supplied to the filling machine (step S1). Next, the unwound packaging material 30 is wound around a filling guide 22 having a tubular portion extending in the vertical direction, and the ends extending along the flow direction of the packaging material 30 are overlapped with each other (step S2). ). Then, the ends of the packaging material 30 are used as the tip end portion 7b of the gassho portion 7, and the inner surfaces of the gassho portion 7 are overlapped with each other, and heat-sealed to form the gassho portion 7 (step S3). Specifically, in a state where the center sealer 23 overlaps the inner surfaces of the gassho portions 7, the gassho portion 7 is formed by heat-sealing a predetermined region from the end portion at a predetermined sealing temperature. A seal portion is formed over the entire area of the gassho portion 7, and the ends of the packaging material 30 are joined to each other. As a result, the packaging material 30 becomes a tubular body. As described above, since the filling guide 22 has a flat tubular shape when going downward, due to the influence of this shape, the packaging material 30 has two side portions along the flow direction as it goes downward. It is formed.

Subsequently, the gassho portion 7 formed along the flow direction of the packaging material 30 is positioned at a position 30 mm or more away from the side portion of the two side portions of the packaging material 30 along the flow direction, whichever is closer. Positioning to (step S4). Specifically, the position of the packaging material 30 is finely adjusted in a direction intersecting the flow direction of the packaging material 30, and the position of the two side portions of the packaging material 30 is 30 mm or more away from the side portion on the closer side. The base portion 7a of the gassho portion 7 is moved so as to be located there. Of the two side portions of the packaging material 30, the side portion K1 on the near side is the portion that will later become the first edge 11. Therefore, a position separated by 30 mm or more is a position separated by the distance L1 shown in FIG. As described above, in this embodiment, the distance L1 = 40 mm.

Then, of the two side portions in the flow direction of the packaging material 30, the backing plate 25 is applied to the side portion far from the gassho portion 7 to form the folding portion 5 (step S5). Specifically, the backing plate 25 is arranged at a predetermined position below where the side portion on the side far from the gassho portion 7 faces. Then, as the packaging material 30 flows downward, the side portion on the side far from the gassho portion 7 that hits the backing plate 25 is folded. Then, the folding portion 5 is formed in the portion where the tip of the backing plate 25 is located.

Next, in a state where the gassho portion 7 is positioned so as to be at a position 30 mm or more away from the side portion K1 on the closer side of the two side portions of the packaging material 30 along the flow direction, the packaging material 30 Along the direction intersecting the flow direction, heat-sealing is performed to form a sealing portion downward (step S6). Specifically, the top-and-end sealer 24 heat-seals along the direction intersecting the flow direction of the packaging material 30 to form a bottom portion at the time of filling. At this time, the seal portion formed downward becomes the fourth edge seal portion 14a.

Next, the contents are charged from above the tubular filling guide 22 with the seal portion formed below as the bottom, and the contents are filled in the pouch (step S7). As a result, a seal portion is formed on the lower side, and the contents are dropped and filled in the bottom portion of the packaging material whose upper part is continuous up to the take-up roll 20. When the pouch is filled with the contents with the lower seal portion as the bottom, the seal portion is formed on the upper side facing the lower seal portion (step S8). Specifically, the top-and-end sealer 24 heat-seals along the direction intersecting the flow direction of the packaging material 30, forms a seal portion, and seals the upper portion. At this time, the seal portion formed above becomes the third edge seal portion 13a.

The formation of the lower seal portion in step S6 and the formation of the upper seal portion in step S8 are actually performed simultaneously for different pouches. Specifically, by heat-sealing with the top-and-end sealer 24 and cutting the formed seal portion upward and downward, the upper portion becomes the bottom seal portion of step S6 with respect to the pouch located above. (Fourth edge seal portion 14a), and the lower portion serves as a seal portion (third edge seal portion 13a) for sealing the pouch located below in step S8.

By executing the process shown in FIG. 6, a pouch as shown in FIGS. 1 to 3 is manufactured. The content to be stored in the storage unit 8 is preferably a solid object having a certain size, such as a snack snack. In FIGS. 1 to 3, as described above, the illustration of the contents is omitted.

<At the time of opening>
Next, opening of the pouch filled with the contents will be described. FIG. 7 is a perspective view showing a state before and after opening the pouch by cutting out the gassho portion 7. In FIG. 7, as in FIG. 1, it is a view seen from the second surface 2 side where the gassho portion 7 is not formed. FIG. 7A is the same as FIG. 1, and is a perspective view of the pouch before opening. From the state shown in FIG. 7A, the opening means 17 which is a notch grasps the vicinity of the first edge 11, and from the third edge 13 or the fourth edge 14 side, the other fourth edge 14 or the third edge Apply force to pull toward the 13 side. As a result, the vicinity of the first edge 11 is easily cut off from the main body 3.

FIG. 7B is a perspective view of the pouch after cutting near the first edge 11. As shown in FIG. 7B, after cutting the vicinity of the first edge 11, the opening 18 is formed in the direction from the third edge 13 to the fourth edge 14. The contents can be taken out from this opening 18. For example, when the content is a snack food, as described above, the snack food can be eaten by pulling the vicinity of the first edge 11 from the opening means 17 to easily open the food. If the snack food remains and you want to store it, the first portion 3a of the main body portion 3 is folded back to the opposite side to the gassho portion 7, that is, the second surface 2 side, with the base portion 7a of the gassho portion 7 as a base point. As a result, as shown in FIG. 7C, the facing portion between the base portion 7a of the gassho portion 7 and the second surface 2 is closed. Therefore, the consumer can easily close the pouch simply by folding back the first portion 3a of the main body portion 3 to the side opposite to the gassho portion 7, that is, the second surface side. That is, the pouch once opened can be reclosed (resealed). At this time, although it cannot be completely sealed, the space from the opening 18 to the accommodating portion 8 can be closed to the extent that a solid substance having a certain size such as a snack confectionery does not spill. In particular, in the present embodiment, since the condition that the distance L2 between the base portion 7a of the gassho portion 7 and the opening means 17 is 30 mm and 20 mm or more is satisfied, the first portion 3a of the main body portion 3 is easy to grasp and also. Even after folding back, it is possible to prevent the opening 18 from opening by returning to the first surface 1 side. When the distance L2 is 30 mm or more, naturally, the distance L1 between the base portion 7a of the gassho portion 7 and the first edge 11 is also 30 mm or more.

Although the preferred embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments and modifications, and various modifications are possible. For example, in the above embodiment, a pillow type having a gassho portion and a self-supporting pouch having a gusset has been described, but it is also possible to use a type without a gusset. In this case, in the manufacturing method, it is not necessary to form the folding portion in step S5.

1 ... 1st surface 2 ... 2nd surface 3 ... Main body 3a ... 1st part (folded part)
3b ... 2nd part (of the main body) 5 ... Folded part 7 ... Gassho part 7a ... Base part (of the gassho part) 7b ... Tip part 8 ... Accommodating Part 11 ... 1st edge 12 ... 2nd edge 13 ... 3rd edge 14 ... 4th edge 18 ... Opening 20 ... Winding roll 22 ... Filling guide 23 ...・ Center sealer 24 ・ ・ ・ Top and end sealer 25 ・ ・ ・ Support plate

Claims (6)

Steps to unwind the packaging material from winding,
A step of winding the unwound packaging material around a filling guide having a tubular portion extending in the vertical direction and superimposing the ends along the flow direction of the packaging material.
A step of heat-sealing a predetermined area from the ends to form a gassho part,
The gassho portion formed along the flow direction of the packaging material is positioned so as to be at a position 30 mm or more away from the side portion of the two side portions of the packaging material along the flow direction, whichever is closer. Steps and
A step of forming a seal portion downward along a direction intersecting the flow direction of the packaging material,
The step of filling the contents from above with the seal portion formed below as the bottom,
The step of forming the seal portion above the seal portion formed below and
A method for producing a pouch, which comprises having. Between the positioning step and the step of forming the seal portion below, the backing plate is applied to the side portion of the two side portions in the flow direction of the packaging material, which is far from the gassho portion, and folded. The method for manufacturing a pouch according to claim 1, further comprising a step of forming a portion. The method for producing a pouch according to claim 1 or 2, wherein the packaging material is a laminated film in which a stretched polypropylene film and a vapor-deposited non-stretched polypropylene film are laminated. A pouch having a main body portion composed of a first surface and a second surface facing each other, and a gassho portion formed on one surface of the main body portion.
The main body portion has a first edge, a second edge facing the first edge, and a third edge and a fourth edge extending between the first edge and the second edge.
The gassho portion is provided from the third edge to the fourth edge of the main body portion.
The gassho portion has a base portion and a tip portion facing the base portion.
The main body portion is connected to the base portion of the gassho portion and extends toward the first edge, and the main body portion is continuously provided at the base portion of the gassho portion and extends toward the second edge. Including parts,
A pouch characterized in that the base portion of the gassho portion is close to the first edge and is provided at a position separated from the first edge by 30 mm or more. The pouch according to claim 4, wherein the gusset portion is provided on the second edge of the main body portion. The pouch according to claim 4 or 5, wherein the packaging material constituting the pouch is a laminated film in which a stretched polypropylene film and a vapor-deposited non-stretched polypropylene film are laminated.