JP2016064848A - Pouch container and method for manufacturing pouch container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pouch container which can perform pouring-out operation more easily.SOLUTION: A pouch container 10 is equipped with: a first surface sheet 18; a second surface sheet 20 which faces the first surface sheet 18 and forms a cylindrical shape together with the first surface sheet 18; a top gusset sheet 24 which is so inserted between the first surface sheet 18 and the second surface sheet 20 as to connect upper ends of both surface sheets to each other; a bottom gusset sheet 22 which is so inserted between the first surface sheet 18 and the second surface sheet 20 as to connect lower ends of both surface sheets to each other; a bung hole 14 which is provided on a junction between the top gusset sheet 24 and the upper end of the first surface sheet 18, and communicates the interior and the exterior of the pouch container 10 with each other; and a holding part 28 which is provided at a position near a bottom on the second surface sheet 20 with respect to the top gusset sheet 24.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a pouch container composed of one or more sheets, and a method for manufacturing the pouch container.

  Pouch containers are widely used as refill containers for various fluid products because they have excellent characteristics such as light weight and easy disposal. In such a pouch container, in order to reduce transportation cost and storage space, it is required to reduce the container size while securing a sufficient container capacity.

  In order to satisfy this demand, conventionally, pouch containers having gussets (gussets) on the top and bottom are widely known. In the case of such a pouch container, since the thickness from the bottom to the top of the container can be increased, the width and height of the container are higher than those of the container having only the bottom gusset and the pouch container having no bottom gusset and top gusset. The container capacity can be increased without increasing the size.

JP 2009-208836 A JP 2011-235965 A

  However, such a container having a top gusset and a bottom gusset has a problem that it is difficult to carry and dispense when it has a large capacity. In particular, since the pouch container is made of a flexible material, when the contents in the pouch container are poured, the pouch container is constricted as the internal volume decreases, so that the pouch container can be poured out with one hand. There wasn't.

  Here, Patent Document 1 discloses a pouch container having a top gusset and a bottom gusset and provided with a handle. However, in this patent document 1, the upper adhesive part which adhere | attached the top gusset and the upper area | region of the back sheet is formed long, and the opening provided in the said upper adhesive part is used as a handle. That is, in Patent Document 1, the handle for gripping the container is located near the upper end of the container. In this case, it is somewhat convenient to carry the container, but when pouring the contents by tilting the container, it is necessary to hold the handle with one hand and attach the other hand to the bottom of the container. The pouring work in was difficult.

  Patent Document 2 discloses a technique for sticking a substantially band-shaped film carrying handle on the front surface or the back surface of a pouch container. According to such a technique, the workability of the extraction is somewhat improved. However, since the pouch container of Patent Document 2 has a configuration that does not have the top gusset, the thickness decreases as it approaches the upper end. In this case, the width and height of the container with respect to the container capacity increase, leading to an increase in transportation cost and accommodation space. Moreover, since the thickness of the pouch container of Patent Document 2 decreases as it approaches the upper end thereof, the center of gravity of the container as a whole is located on the lower side and is difficult to tilt. In addition, even after tilting, the thickness is thin, so that constriction and bending occur relatively easily, and there is a problem that the dispensing operation is easily hindered.

  Therefore, an object of the present embodiment is to provide a pouch container that can perform the dispensing operation more easily.

  The pouch container of the present invention is a pouch container composed of one or more sheets, a first surface sheet, a second surface sheet that faces the first surface sheet and forms a cylindrical shape with the first surface sheet; The top gusset sheet inserted between the upper end of the first face sheet and the upper end of the second face sheet, the lower end of the first face sheet, and the lower end of the second face sheet A bottom gusset sheet that connects the top gusset sheet and an upper end of the first face sheet, a spout that communicates the inside and outside of the pouch container, and the top face of the second face sheet. And a grip portion provided closer to the bottom than the gusset sheet.

  In a preferred aspect, the gripping part is an interior sheet joined to the inner surface of the second surface sheet, and an insertion or an incision formed in a position overlapping the interior sheet of the second surface sheet. And a mouth.

  In another preferred aspect, the grip portion further includes a tongue piece partly connected to the second surface sheet and the remaining part separated from the second surface sheet. In another preferred aspect, the interior sheet extends over the entire width of the second sheet. In another preferred aspect, the end face of the interior sheet joined to the inner surface of the second face sheet is isolated from the internal space of the pouch container. In another preferred aspect, the upper end of the second face sheet is lower than the upper end of the first face sheet.

  The manufacturing method of the pouch container according to another aspect of the present invention includes at least a first surface sheet constituting a cylindrical body, a second surface sheet facing the first surface sheet, an upper end of the first surface sheet, and the first surface sheet. A pouch container manufacturing method comprising: a top gusset sheet that connects the upper end of a two-sided sheet; and a spout that communicates the inside and outside of the pouch container, wherein a finger insertion port is provided in the second side sheet. An insertion opening forming step for forming an opening or a notch, a first joining step for joining an interior sheet to a position overlapping the insertion opening, of the inner surface of the second face sheet, and the first joining step. And a second joining step for joining the sheets constituting the pouch container to each other.

  According to the present invention, in the pouch container having the top and the bottom gusset sheet, the gripping portion is provided on the surface opposite to the surface on which the spout is attached, so that the pouring operation can be easily performed with one hand.

It is a perspective view of a pouch container which is an embodiment of the present invention. It is a schematic exploded perspective view of a pouch container. It is a schematic longitudinal cross-sectional view of a pouch container. It is a figure which shows a mode that the pouch container was inclined. It is a figure which shows the flow of manufacture of a pouch container. It is a figure which shows the flow of manufacture of a pouch container. It is a perspective view of another pouch container. It is BB sectional drawing of FIG. It is the A section enlarged view of FIG. It is a figure which shows an example of the process of the edge part of an interior sheet. It is a figure which shows an example of the process of the edge part of an interior sheet. It is a figure which shows an example of the process of the edge part of an interior sheet. It is a figure which shows an example of the conventional pouch container. It is a figure which shows an example of the conventional pouch container.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of a pouch container 10 according to an embodiment of the present invention. 2 is a schematic exploded perspective view of the pouch container 10, and FIG. 3 is a schematic longitudinal sectional view of the pouch container 10.

  The pouch container 10 is a container for storing contents, and is configured by bonding a plurality of sheets. Hereinafter, the contents of the pouch container 10 will be described as liquid, such as liquid chemicals such as liquid detergents and shampoos, and liquid foods such as oil and liquor. However, the content of the pouch container 10 is not limited to a liquid, but may be a solid such as a granular material, a gel-like, or a sol-like semi-solid.

  The pouch container 10 is roughly divided into a container main body 12 configured by bonding a plurality of sheets, and a spout 14 attached to the container main body 12. The pouch container 10 includes a first surface sheet 18 that constitutes the front or back surface of the pouch container 10, a second surface sheet 20 that constitutes the back surface or front surface of the container, a bottom gusset sheet 22 that constitutes a bottom gusset (gusset) of the container, The top gusset sheet 24 constituting the top gusset (gusset) of the container is joined to each other. The container main body 12 is a substantially cylindrical shape having a thickness corresponding to the size of the gusset sheets 22 and 24, and is a standing pouch that can stand by itself. In addition, although the container main body 12 may comprise each above-mentioned sheet | seat from a respectively different sheet | seat, you may comprise by folding one sheet | seat. Hereinafter, description will be made assuming that the sheet is composed of another sheet. The spout 14 is a substantially cylindrical body made of hard resin, and is attached to the upper end of the container body 12. When the contents of the pouch container 10 are poured out, the pouch container 10 is gripped and the pouch container 10 is tilted. In order to facilitate this dispensing operation, in the present embodiment, a grip portion 28 that is gripped by the user is provided on the second face sheet 20 side of the pouch container 10. Hereinafter, the configuration of each part of the pouch container 10 will be described in detail.

  As described above, the container body 12 is composed of a plurality of sheets. The 1st surface sheet 18 and the 2nd surface sheet 20 are arrange | positioned facing each other, the both sides are bonded together, and comprise a substantially cylindrical shape. A portion where both sides of the first surface sheet 18 and the second surface sheet 20 are heat sealed becomes a side seal portion 30s. The first surface sheet 18 and the second surface sheet 20 have substantially the same width. In addition, for the convenience of manufacturing, the height of the second surface sheet 20, that is, the surface on which the grip portion 28 is formed, is the first surface sheet 18, that is, the surface sheet on which the spout 14 is attached. The upper end of the second surface sheet 20 is lower than the upper end of the first surface sheet 18.

  An interior sheet 26 is joined to the inner surface of the second sheet 20. Only the periphery of the interior sheet 26 is joined to the interior sheet 26, and the central portion thereof is not joined to the second surface sheet 20. Therefore, a space independent of the internal space of the pouch container 10 is formed between the interior sheet 26 and the second surface sheet 20. In the second sheet 20, an opening is formed at an overlapping portion with the interior sheet 26. The opening serves as an insertion port 31 for inserting a finger when the user holds the pouch container 10. The user inserts a finger into the space between the second sheet 20 and the interior sheet 26 from the insertion port 31 and grips a part of the second sheet 20, or Hook your fingers. That is, the insertion port 31 formed in the interior sheet 26 and the second surface sheet 20 constitutes a grip portion 28 for gripping the pouch container 10. As long as the grip portion 28 is positioned on the second surface sheet 20 side and below the top gusset sheet 24, the formation position thereof is not particularly limited. However, in view of stability when the pouch container 10 is gripped, it is desirable to provide the pouch container 10 at a height position substantially the same as the height of the center of gravity of the pouch container 10.

  The size of the interior sheet 26 is not particularly limited as long as a space for inserting a finger can be formed between the interior sheet 26 and the second sheet 20. However, in consideration of productivity and the like, the interior sheet 26 is desirably provided over the entire width of the second surface sheet 20. That is, it is desirable to make the width of the interior sheet 26 the same as the width of the second sheet 20. By setting it as this structure, the pouch container 10 can be manufactured simply and cheaply by the existing bag making process using an elongate sheet | seat. Further, by inserting the interior sheet 26 between the first and second surface sheets 18 and 20 and providing the grip portion 28, the pouch container 10 is manufactured using a general front and back sheet having a sealant layer on one side. can do.

  The bottom gusset sheet 22 is a sheet that connects the lower end of the first side sheet 18 and the lower end of the second side sheet 20. The bottom gusset sheet 22 is folded in the upward direction and is sandwiched between the first sheet 18 and the second sheet 20. In this state, the periphery of the bottom gusset sheet 22 and the first sheet 18 and the second sheet 20 are joined to each other. A portion where the peripheral edge of the bottom gusset sheet 22 and the lower end of the first side sheet 18 and the lower end of the second side sheet 20 are heat-sealed becomes a bottom seal portion 30b. When the contents are filled in the pouch container 10, the bottom gusset sheet 22 that has been folded in a mountain is unfolded and spreads to give the pouch container 10 a thickness.

  The top gusset sheet 24 connects the upper end of the first side sheet 18 and the upper end of the second side sheet 20. The top gusset sheet 24 is folded downward and sandwiched between the first sheet 18 and the second sheet 20. In this state, the periphery of the top gusset sheet 24 and the first sheet 18 and the second sheet 20 are joined to each other. A place where the periphery of the top gusset sheet 24 and the upper end of the first side sheet 18 and the upper end of the second side sheet 20 are heat-sealed becomes a top seal part 30t. As described above, in the present embodiment, the upper end of the second surface sheet 20 is lower than the upper end of the first surface sheet 18. Therefore, the top seal portion 30t on the second surface sheet 20 side is lower than the top seal portion 30t on the first surface sheet 18 side.

  A spout 14 is attached to a joint portion between the top gusset sheet 24 and the upper end of the first face sheet 18. The spout 14 is a substantially cylindrical body made of a hard resin. The spout 14 includes a mouth main body 34 joined to the container main body 12 and a cap 36 screwed into the mouth main body 34. As shown in FIG. 2, the mouth body 34 has a flange 34 a formed at the center in the height direction, and an attachment portion 34 b joined to the container body 12 is provided below the flange 34 a. The attachment portion 34b has a substantially boat shape whose cross section becomes thinner as it approaches the outer side in the width direction of the pouch container 10. With the mounting portion 34b sandwiched between the upper end of the first side sheet 18 and the end of the top gusset sheet 24 described later, the upper end of the first side sheet 18 and the end of the top gusset sheet 24 are heat sealed. Thus, the mouth main body 34 is fixed to the container main body 12. However, the form of the spout 14 illustrated here is an example, and if the flow path which connects the inside and outside of the pouch container 10 is comprised, another form may be sufficient. For example, the spout 14 may be a flow path formed by a heat seal part.

  Each sheet which comprises the container main body 12 is normally comprised from a resin film. The resin film constituting the sheet is required to have basic performance as a packaging body such as impact resistance, wear resistance, and heat resistance. Moreover, since each said seal | sticker part is normally formed by a heat seal, the heat seal property is also requested | required of a sheet | seat. As the sheet, a multilayer sheet having a base film layer and a sealant layer that imparts heat sealability is suitable, and when high gas barrier properties are required, a gas barrier is provided between the base film layer and the sealant layer. It is preferred to provide a layer.

  In addition, you may provide barrier property to the base film layer itself. In this case, a multilayer sheet having a barrier layer and a sealant layer is obtained using the barrier layer as a base film layer. In addition, when providing heat sealability on both sides of the sheet, a single-layer film that forms a sealant layer described later may be used, or in the case of a multilayer sheet, whether two layers of the same or different sealant layers are used. (At this time, one layer of the sealant layer is formally used as the base film layer), or a sheet having a sealant layer on both sides of the base film layer may be used.

  Here, constituent materials of the base film layer, the sealant layer, and the gas barrier layer are exemplified. In addition, lamination | stacking of these each layer can be performed by the conventional lamination method, for example, the dry lamination by an adhesive agent, the heat lamination which adhere | attaches with a heat | fever by pinching | interposing a heat bonding layer.

  Examples of the film constituting the base film layer include polyester (polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polybutylene terephthalate (PBT), polycarbonate (PC), etc.), polyolefin (polyethylene (PE), polypropylene ( PP)), polyamide (nylon-6, nylon-66, etc.), polyacrylonitrile (PAN), polyimide (PI), polyvinyl chloride (PVC), polyvinylidene chloride (PVDC), polymethyl methacrylate (PMMA), and A stretched or unstretched film of one layer or two or more layers composed of polyethersulfone (PES) or the like can be exemplified.

  The films constituting the sealant layer include low density polyethylene (LDPE), linear low density polyethylene (LLDPE), ethylene-propylene copolymer (EP), unstretched polypropylene (CPP), and biaxially stretched nylon (ON). , Ethylene-olefin copolymer, ethylene-acrylic acid copolymer (EAA), ethylene-methacrylic acid copolymer (EMAA), ethylene-vinyl acetate copolymer (EVA), etc. A stretched or unstretched film can be exemplified.

  The gas barrier layer may be a metal thin film such as aluminum, a resin film such as vinylidene chloride (PVDC) or ethylene-vinyl alcohol copolymer (EVOH), or any synthetic resin film (for example, a base film layer). ), And a film obtained by vapor-depositing (or sputtering) an inorganic oxide such as aluminum, aluminum oxide or silica.

  The sheet can be provided with a printing layer (not shown) for displaying the product name of the contents, the product description such as raw materials and usage precautions, and various other designs. For example, the printing layer can be formed on the inner surface of the base film layer by a known method such as gravure printing.

  By the way, as is apparent from the above description, in this embodiment, the container body 12 is provided with a bottom gusset and a top gusset, and the pouch container 10 is gripped with the spout 14 on the first surface sheet 18 side. A gripping portion 28 is provided on the second surface sheet 20 side. The reason for this configuration is as follows.

  When the contents of the pouch container 10 are poured out, the pouch container 10 must naturally be held and the pouch container 10 tilted. At this time, if the pouch container 10 does not have the grip portion 28, the user must directly grip the trunk portion of the pouch container 10 with his / her hand. However, if the force to grip the torso is strong, the pouch container 10 is compressed and the contents are ejected. Conversely, if the force to grip the torso is weak, the pouch container 10 cannot be held and the pouch container 10 may be dropped. It was very difficult to adjust. Therefore, in the case of the pouch container 10 without the grip portion 28, when the contents are poured out, the body of the pouch container 10 is grasped with one hand, and the other hand is attached to the bottom of the pouch container 10. There was a need. That is, in the case of the pouch container 10 without the grip portion 28, it is difficult to pour out with one hand.

  In view of this, some proposals have been made to provide the gripping portion 28 in the standing pouch. For example, as shown in FIG. 11, it has been proposed to form a hole 50 serving as a grip portion in the seal portion 30 of the pouch container 10. However, in this case, a dedicated seal portion 30 must be secured for forming the grip portion, and the capacity with respect to the size of the pouch container 10 is reduced. In addition, as shown in FIG. 12, it has been proposed in part to attach a handle 52 serving as a grip portion to the back surface of the pouch container 10 having a bottom gusset. According to such a configuration, even if the grip portion is provided, the capacity is not reduced.

  However, as shown in FIG. 12, in the case of the pouch container 10 having only the bottom gusset and not having the top gusset, the thickness of the pouch container 10 becomes thinner as it approaches the top side. Therefore, there is a problem that the capacity is small compared to the width and height of the pouch container 10. In addition, at a storefront or the like, a plurality of pouch containers 10 are displayed side by side. At this time, in the case of the pouch container 10 having only the bottom gusset, even if the bottom portions of the plurality of pouch containers 10 are arranged so as to be in contact with each other, a gap is generated between the top portions. A dead space will occur. That is, in the pouch container 10 of FIG. 12, the display space cannot be fully utilized.

  Further, in consideration of the state of the pouring work, in the case of the pouch container 10 shown in FIG. 12, the thickness increases as it approaches the bottom, so that the center of gravity of the entire pouch container 10 is at a relatively low position. Thus, force is required to tilt the pouch container 10 having a low center of gravity by gripping only the handle 52 on the back surface. Therefore, usually, the pouch container 10 is often tilted with a hand attached to the bottom of the pouch container 10 while holding the handle 52. Further, when the pouch container 10 is tilted and the contents follow the gravity and flow downward, the relative positional relationship of the center of gravity with respect to the handle 52 changes abruptly. The user has to adjust the angle at which the pouch container 10 is tilted in accordance with such a rapid change in the position of the center of gravity. Furthermore, the pouch container 10 of FIG. 12 is thin on the top side and poor in rigidity. For this reason, the pouch container 10 may be deformed as the contents are reduced, for example, bent in the height direction or constricted in the width direction. Such deformation of the pouch container 10 naturally obstructs the stability of the dispensing operation.

  On the other hand, in this embodiment, both the top gusset sheet 24 and the bottom gusset sheet 22 are provided. By setting it as this structure, it has the substantially same thickness in the whole container. As a result, the internal capacity can be increased compared to the width and height. In addition, when a plurality of items are displayed side by side at a store, a dead space is unlikely to occur and the display space can be used effectively.

  Furthermore, the center of gravity can be raised by setting the pouch container 10 as a whole to substantially the same thickness. Therefore, it can be inclined relatively easily as compared with the case of FIG. In addition, since the thickness is almost the same as the whole, even if the pouch container 10 is tilted and the contents flow toward the spout 14, the relative positional relationship of the center of gravity with respect to the grip portion 28 is small. As a result, it can be tilted stably without the need for delicate adjustment. Furthermore, since the pouch container 10 has a thickness as a whole, even if the contents are reduced, the pouch container 10 is not easily bent or constricted and is not easily deformed. As a result, stable dispensing work can be performed with one hand.

  Here, in the present embodiment, the spout 14 is provided on the opposite surface of the grip portion 28. Therefore, as shown in FIG. 4, when the pouch container 10 is held so that the gripping portion 28 is located on the upper side in the gravity direction, the spout 14 located on the opposite side of the gripping portion 28 must Will be located on the side. As a result, the contents in the pouch container 10 smoothly flow to the spout 14 due to the action of gravity.

  Furthermore, in this embodiment, the holding part 28 is comprised by the insertion port 31 formed in the 2nd surface sheet 20, and the interior sheet 26 heat-sealed by the said 2nd surface sheet 20. FIG. By setting it as this structure, the pouch container 10 provided with the holding part 28 can be manufactured simply and inexpensively by the existing bag making process using a long sheet. That is, conventionally, some forms have been proposed in which a handle 52 made of a completely different material from the sheet constituting the main body of the pouch container 10 can be taken as the gripping part. However, in such a configuration, the grip part (handle 52) cannot be formed in the process for manufacturing the pouch container such as cutting, bending, and joining of the sheet material, and a dedicated process for forming the grip part is not possible. I had to set it up. As a result, the cost of the pouch container 10 provided with the gripping part is increased, and the manufacturing process is complicated.

  Next, the manufacturing process of the pouch container 10 of this embodiment is demonstrated with reference to FIG. 5, FIG. 5 and 6 are diagrams showing a manufacturing process of the pouch. 5 (a) to 6 (b), the various sheets are illustrated as short sheet pieces, but are actually long sheets until they are cut in FIG. 6 (c). .

  When the pouch container 10 is manufactured, first, the mountain-folded top gusset sheet 24, bottom gusset sheet 22, and interior sheet 26 are disposed between the first and second surface sheets 18 and 20 (FIG. 5 ( a)). At this time, the 1st, 2nd surface sheets 18 and 20 are arrange | positioned so that each sealant layer may mutually oppose. Moreover, the top gusset sheet 24 and the bottom gusset sheet 22 are mountain-folded so that the respective sealant layers come out. The interior sheet 26 is a double-sided heat-sealable sheet.

  If various sheets are arranged, the second surface sheet 20 is punched by the punching machine 60, and the insertion port 31 is formed in the second surface sheet 20 (FIG. 5B). Thereafter, the upper and lower end portions of the interior sheet 26 and the second surface sheet 20 are heat-sealed with the heat insulating plate 62 disposed below the interior sheet 26 (FIG. 5C). This heat sealing is performed by pressurizing and heating the outer surface of the second sheet 20 with a heat seal bar 64 having a linear heating section.

  Subsequently, the heat insulating plate 66 is disposed between the foldable top gusset sheets 24. In this state, the peripheral edge of the top gusset sheet 24 and the end portions of the first and second surface sheets 18, 20 and the peripheral end of the bottom gusset sheet 22 and the end portions of the first and second surface sheets 18, 20 Each is heat-sealed (FIG.5 (d)). This heat sealing is performed by pressurizing and heating the outer surfaces of the first and second surface seals with a heat seal plate 68 provided with a heating unit having a desired seal shape. In the subsequent process, the spout 14 is inserted between the center of the upper end of the first face sheet 18 and the center of the upper end of the top gusset sheet 24. In order to allow the insertion of the spout 14, each of the first side sheet 18 and the top gusset sheet 24 is heat-sealed only on both sides in the width direction of the upper end, and the center portion in the width direction of the upper end is unsealed. It remains.

  FIG. 6A shows the pouch container 10 that has undergone this heat sealing process. If it will be in this state, the 2nd sheet | seat 20 side of the top gusset sheet | seat 24 folded in half will be raised next (FIG.6 (b)). For this start-up, for example, a guide rail 70 that gradually deforms from a horizontal state to a vertical state is inserted between the foldable top gusset sheets 24, and along this guide rail 70, a pouch container is inserted. 10 can be transferred. When the second side sheet 20 side of the top gusset sheet 24 stands up, the top ends of the top gusset sheet 24 and the second side sheet 20 that overlap each other are cut, and the upper end height is made lower than the first side sheet 18 side. .

  If the top gusset sheet 24 and the second side sheet 20 can be cut, the top gusset sheet 24 is again tilted to return the pouch container 10 to a flat state. Then, both side portions of the pouch container 10 are heat sealed. At this time, both ends in the width direction of the bottom seal portion 30b constituted by the second face sheet 20 and the bottom gusset sheet 22, and both ends in the width direction of the bottom seal portion 30b constituted by the first face sheet 18 and the bottom gusset sheet 22 , Point seal Ps for joining is also applied. Similarly, the width direction both ends of the top seal portion 30t configured by the second surface sheet 20 and the top gusset sheet 24, and the width direction of the top seal portion 30t configured by the first surface sheet 18 and the top gusset sheet 24 A point seal Ps for joining both ends is also provided. If the side seal portion 30s and the point seal can be formed, the long sheet is cut for each width of one pouch container 10 (FIG. 6C). FIG. 6D shows the state of the pouch container 10 after cutting.

  In this state, subsequently, the spout 14 is inserted between the top gusset sheet 24 and the first sheet 18. Specifically, first, the first gusset sheet 24 is sucked by a first suction member (not shown), and the first face sheet 18 is sucked and held by a second suction member (not shown). By moving the second suction member away from each other, a gap is formed between the first face sheet 18 and the top gusset sheet 24. And the attaching part 34b of the spout 14 is inserted in this clearance gap. If the spout 14 can insert the attachment portion 34b between the first surface sheet 18 and the top gusset sheet 24, then the upper end of the first surface sheet 18 and the top gusset with the attachment portion 34b sandwiched therebetween. The upper end of the sheet 24 is heat sealed. Here, as is apparent from FIG. 6 (d), in the present embodiment, the second face sheet 20 is cut in the middle of manufacture to be lower than the first face sheet 18. Therefore, the upper end of the first surface sheet 18 is exposed to the outside without being hidden by the second surface sheet 20. Therefore, the work of separating the first sheet 18 and the top gusset sheet 24, the work of inserting the mounting portion 34b between the two sheets, and the work of heat sealing the upper ends of both sheets can be easily performed. it can.

  As is apparent from the above description, in the present embodiment, the grip portion 28 is configured by a sheet similar to the sheet configuring the pouch container 10. As a result, in the process of the general pouch container 10, the step of forming the insertion port 31 into the second sheet 20 (FIG. 5B), and the second sheet 20 and the interior sheet 26. The grip portion 28 can be easily configured simply by adding a joining step (FIG. 5C). In other words, the pouch container 10 including the grip portion 28 can be manufactured without significantly changing the conventional manufacturing process. Further, by cutting the upper end of the second face sheet 20 and making it lower than the first face sheet 18 during the manufacturing process, the attaching step of the spout 14 can be performed in the same procedure as before.

  However, the cutting process (FIG. 6B) of the second surface sheet 20 described above may be omitted. In this case, the point seal Ps may be formed after the spout 14 is not attached. That is, when the point seal Ps is not formed in the step of FIG. 6C, the folded gusset sheet 24 can be lifted on one side as shown in FIG. 6B. Therefore, after forming the side seal portion 30 s and cutting the long sheet into a predetermined width, the second sheet 20 side of the top gusset sheet 24 is raised using the guide rail 70, and the first sheet 18 The side may be exposed to the outside, and the spout 14 may be attached in this state. And after attaching the spout 14, you may form the point seal | sticker Ps. By setting it as this manufacturing method, since the height direction length of the 2nd surface sheet 20 can be made the same with the height direction length of the 1st surface sheet 18, the capacity | capacitance of the whole pouch container 10 can be increased more.

  By the way, in the example shown in FIG. 1, the insertion port 31 is a long hole elongated in the height direction arranged in the width direction. In this case, a portion of the second surface sheet 20 sandwiched between the two long holes functions as a handle held by the user. However, the shape, number, and size of the insertion port 31 are not particularly limited as long as fingers can be inserted. Therefore, for example, the insertion port 31 may not be an “opening” like a long hole but may be a notch obtained by breaking the second face sheet 20 into a linear shape. Further, the number of insertion ports 31 may be plural or singular. When there are a plurality of insertion ports 31, as shown in FIG. 1, the space between the insertion port 31 and the insertion port 31 in the second surface sheet 20 functions as a handle held by the user. In FIG. 1, the insertion port 31 is long in the height direction. However, if the insertion port 31 has a length that can be inserted by a finger, the insertion port 31 is long in the width direction. Also good. Further, for example, four openings into which one finger can be inserted may be formed side by side, and when the pouch container 10 is gripped, a finger may be inserted into each opening.

  Further, the insertion port 31 may be provided with a tongue piece partially connected to the second surface sheet 20 and the remaining portion separated from the second surface sheet 20. FIG. 7 is a perspective view of the pouch container 10 in which the tongue piece 40 is provided in the insertion port 31, and FIG. 8 is a cross-sectional view taken along line BB in FIG. 7 with the tongue piece 40 turned. In such a pouch container 10, when gripping the pouch container 10, the tongue piece 40 is turned outward or inward as shown in FIG. 8. In this case, a curved surface 40 a is formed by the tongue piece 40 at the edge of the insertion port 31. Due to the presence of this curved surface, the biting of the edge of the insertion port 31 into the fingers is mitigated, and the gripping property is improved.

  Moreover, the opening and notch which comprise the insertion port 31 demonstrated so far do not need to be formed in advance, and the perforation and half cut line for forming the said opening and notch | incision in the 2nd surface sheet 20 You may just form. In this case, when the user needs the grip portion 28 such as when pouring the contents, the user only needs to break the second surface sheet 20 along the perforation line or the half cut line to form the insertion port 31. .

  In addition, the interior sheet 26 desirably has the same width as the second surface sheet 20 for the convenience of manufacture. However, the interior sheet 26 does not necessarily have the same width, and the width of the interior sheet 26 is set to the width of the second surface sheet 20. It may be smaller.

  By the way, in the case of the form shown in FIGS. 1 to 3, the upper and lower end surfaces of the interior sheet 26 come into contact with the contents (liquid) filled in the pouch container 10. The problem in this case will be described with reference to FIG. FIG. 9 is an enlarged view of a portion A in FIG. The interior sheet 26 is required to have heat sealability on both sides for the sake of manufacturing. Moreover, a barrier layer is also required when high light shielding properties and gas barrier properties are required. As a result, the interior sheet 26 has a three-layer structure in which sealant layers L2 and L3 are disposed on both sides of the barrier layer L1, as shown in FIG. When the end surface 26a of the three-layer interior sheet 26 comes into contact with the liquid, the contents (liquid) may be eroded between the layers, and delamination may occur. In general, the barrier layer often contains an inorganic oxide such as aluminum, aluminum oxide, or silica. And depending on the kind of contents (liquid), these inorganic oxides may contact and change the contents. In this case, there is a possibility of causing problems such as deterioration of gas barrier properties and light shielding properties, and deterioration of contents themselves.

  Therefore, when the interior sheet 26 is smaller than the second sheet 20, it is desirable to isolate the end surface 26 a of the interior sheet 26 from the internal space of the pouch container 10. Various methods for isolating the end surface 26a of the interior sheet 26 from the internal space of the pouch container 10 are conceivable. For example, as shown in FIG. 10A, a tape 42 (for example, a sealant layer) that allows liquid contact is allowed. A single-layer tape having only the upper surface of the interior sheet 26 may be stuck across the inner surface of the second sheet 20. In this case, since the end surface 26a of the interior sheet 26 is covered with the tape 42, the liquid is prevented from contacting the end surface 26a.

  As another form, as shown in FIG. 10B, the pair of sealant layers L2 and L3 sandwiching the barrier layer L1 are slightly longer than the barrier layer L1 and protrude outward from the end face of the barrier layer L1. May be. In this case, when the peripheral edge of the interior sheet 26 is heated and heat-sealed, the melted sealant layers L2 and L3 flow out to the end surface of the barrier layer L1, and cover the end surface of the barrier layer L1. Even when the sealant layers L2 and L3 are not elongated, if the marginal edge of the interior sheet 26 is heated at the time of heat sealing, a part of the dissolved sealant layers L2 and L3 flows out to the end face of the barrier layer L1. The end surface of the barrier layer L1 is covered. As another form, as shown in FIG. 10C, the periphery of the interior sheet 26 is bent toward the outside (the second sheet 20 side), and then the interior sheet 26 and the second sheet 20 are joined. May be. Moreover, as long as the end surface 26a of the interior sheet 26 is isolated from the internal space of the pouch container 10 and does not come into contact with the contents, a form different from the form described so far may be used.

  The configuration described so far is only an example, and the pouch container 10 having the bottom gusset sheet 22 and the top gusset sheet 24 and the gripping portion 28 on the side opposite to the attachment surface of the spout 14 may be used. The configuration may be changed as appropriate. For example, the size (aspect ratio) of the pouch container 10 and the like may be changed as appropriate. The grip 28 is preferably composed of the second sheet 20 and the interior sheet 26, but another member that functions as the grip 28 may be attached to the second sheet 20.

  10 Pouch container, 12 Container body, 14 Outlet, 18 First side sheet, 20 Second side sheet, 22 Bottom gusset sheet, 24 Top gusset sheet, 26 Interior sheet, 28 Grip part, 30 Seal part, 31 Insert port , 34 mouth body, 36 cap, 40 tongue, 42 tape, 50 holes, 52 handle, 60 punching machine, 62, 66 heat insulation plate, 64 heat seal bar, 68 heat seal plate, 70 guide rail.

Claims (7)

A pouch container comprising one or more sheets,
A first sheet,
A second sheet facing the first sheet and forming a cylindrical shape with the first sheet;
In order to connect the upper end of the first face sheet and the upper end of the second face sheet, a top gusset sheet inserted between the two,
A bottom gusset sheet inserted between the bottom face of the first face sheet and the bottom face of the second face sheet;
A spout provided at a joint between the top gusset sheet and the upper end of the first sheet, and communicating between the inside and outside of the pouch container;
Of the second side sheet, a grip portion provided at a position closer to the bottom than the top gusset sheet,
A pouch container comprising: The pouch container according to claim 1,
The gripping part is
An interior sheet joined to the inner surface of the second sheet;
Of the second surface sheet, an insertion port that is an opening or a cut formed at a position overlapping the interior sheet;
A pouch container comprising: A pouch container according to claim 2,
The gripping part further includes a tongue piece partly connected to the second surface sheet and the remaining part separated from the second surface sheet. A pouch container according to claim 2 or 3,
The pouch container, wherein the interior sheet extends over the entire width of the second sheet. The pouch container according to any one of claims 2 to 4, further comprising:
An end surface of the interior sheet joined to an inner surface of the second surface sheet is isolated from an internal space of the pouch container. A pouch container according to any one of claims 1 to 5,
The upper end of the second face sheet is lower than the upper end of the first face sheet. At least a first surface sheet constituting the cylindrical body, a second surface sheet facing the first surface sheet, a top gusset sheet connecting the upper end of the first surface sheet and the upper end of the second surface sheet; A pouch container manufacturing method comprising: a bottom gusset sheet that connects a lower end of the first surface sheet and a lower end of the second surface sheet; and a spout that communicates the inside and the outside of the pouch container,
An insertion port forming step for forming an opening or a cut which is an insertion port for fingers in the second surface sheet;
Of the inner surface of the second sheet, a first bonding step of bonding the interior sheet at a position overlapping the insertion port,
A second joining step for joining the sheets constituting the pouch container together after the first joining step;
A method for manufacturing a pouch container, comprising: