WO2008001829A1

WO2008001829A1 - Pouch container

Info

Publication number: WO2008001829A1
Application number: PCT/JP2007/062957
Authority: WO
Inventors: Takayuki Aikawa; Kazumi Ozawa; Koichi Ishizaka; Souichi Kawakami; Kazutada Sakawa; Takashi Tsurumoto
Original assignee: Toyo Seikan Kaisha, Ltd.
Priority date: 2006-06-30
Filing date: 2007-06-21
Publication date: 2008-01-03
Also published as: JP5131642B2; JPWO2008001829A1

Abstract

Provided is a pouch container, the peripheral edge portion of which has its heat seal portion unexposed at its hard and sharp edge portion to the outside but can have its soft edge portion exposed to the outside thereby to give a comfortable using feel to an operator. In case the pouch container is equipped with a nozzle, moreover, the side seal portion of the peripheral edge portion of the nozzle does not obstruct the nozzle when the nozzle is inserted into the mouth portion of the empty container. The pouch container (1) is sealed at seal portions (5, 6) of the peripheral edge portion of pouch members of a flexible film material, thereby to form a cavity (10) for filling contents, between the pouch members. The pouch members of the cavity close to the seal portions are folded at folds (23, 24) along at least portions of the seal portions, thereby to form the folded portions.

Description

Specification

Pouch container

Technical field

The present invention relates to a bouch container.

Background art

Pouch containers are deformable bag-like soft containers, and are produced and used in many cases together with hard containers such as bottles as containers for storing liquid contents.

The pouch container has a body with a space for filling the contents by side-sealing the front and back pieces made of flexible film-like material at the edges, and in other types of pouch containers The bottom part is also folded into two bottom pieces, sandwiched between the front piece and the back piece, and heat-sealed at the edge to form a stand-alone standing pouch with a deployable bottom.

A voucher container constructed in this way generally contains contents such as liquids, such as detergents, bleaches, softeners, laundry glue, shampoos, rinses, or edible oils, soy sauce, sauces, dressings, drinking water.

The following problems have been pointed out in this pouch container.

First, when the voucher container is configured as a standing voucher, the standing pouch is displayed at a storefront or the like in a standing state with the bottom facing down, with the contents filled with liquid, etc. The back piece is highly flexible like a film! Because it is made of material, the rigidity of the bouch container itself is low, and it is difficult to maintain the posture when standing, and the standing posture may be distorted or the head may hang down in the display state.

Next, since the side seal part at the periphery of the pouch container is heated at the time of sealing, the hardness is extremely high in the cooled and solidified state, and this side seal part is cut in the manufacturing process, so that a sharp edge is formed. The touch of the pouch is very sharp and may be uncomfortable and may damage the palm.

In addition, when the bouch container is used as a refill container for the liquid contents in an empty container, the pouch container may be provided with a nozzle that can be inserted into the mouth of the empty container to facilitate the refill operation. Because the hard side seal part mentioned above is stretched in Nozu Nore, it is difficult to insert it into the mouth part of the empty container, and it is necessary to make the diameter of the liquid passage in the nozzle small by design. As a result, the flow rate at the nozzle is reduced, and it takes time to inject the content liquid. When inserting the nozzle of the voucher container into the mouth of the empty container, the side seal part can be bent so as not to obstruct the insertion, but the side seal part is rigid as described above. It is almost impossible for the user to bend.

Of the above problems, the lack of rigidity of the bouch has been devised.

Patent Document 1 Japanese Laid-Open Patent Publication No. 1 1-1 9 3 0 3 8

Patent Document 2 Japanese Patent Laid-Open No. 2 0 0 0-1 4 2 7 2 0

Patent Document 3 Japanese Patent Laid-Open No. 2 0 0 3-7 7 7 7 0

Patent Document 4 Japanese Patent Laid-Open No. 2 0 0 4— 0 3 5 0 1 8

Patent Document 5 Japanese Patent Laid-Open No. 2 0 0 5-3 3 1 3 9 9 4

The technique of Patent Document 1 is a rib 19 formed over the entire length of the side seal 15 of the bouch container, which improves the self-supporting property, but a sharp, hard edge is exposed on the side seal. However, the problem of the nozzle inserted into the mouth of the empty container remains unsolved. The technique of Patent Document 2 forms a cylindrical vertical rib on the edge of the side seal part, Self-supporting and buckling-resistant.

This technique solves the problem of the rigidity of the container and the problem that a sharp wedge occurs in the side seal. However, in this technique, the width of the side sheath portion must be increased in order to form the rib. The ribs are not formed using a soft bouch material, but are formed using a hard side seal portion, which gives the user a hard feel and is difficult to process.

In the technique of Patent Document 3, the side seal portion is provided with a bent portion such as an L shape, a V shape, a UV shape, or a convex shape in cross section. Although this technique can give rigidity to the bouch container, the problem of the sharp edge exposed on the side seal and the problem of the nozzle inserted into the mouth of the empty container remain unresolved.

The technology of Patent Document 4 has the effect of curling the side seal part in the width direction and improving the self-supporting stability, but as with Patent Document 2, the problems of container rigidity and sharp edges are solved, but the feel is hard, There are problems such as difficult processing.

Patent Document 5 discloses a branched standing bouch. This branch type standing pouch is provided with a dispensing nozzle branched from the center of the upper end of the pouch. The refilling operation is performed by gripping the side seal portions on both sides. Therefore, a configuration is particularly desired in which the hard edge of the side seal portion does not hit the fingers and cause discomfort to the user.

Disclosure of the invention

Problems to be solved by the invention

This invention has been made in view of the above circumstances,

The hard and sharp edge of the heat seal part at the edge of the pouch container is not exposed to the outside, and the soft edge appears at the edge of the pouch container, providing a comfortable feeling to the user. In addition, when a nozzle is provided in the pouch container, the side seal part at the edge of the nozure can be used as a bouch container that does not interfere with the insertion of the nozzle into the mouth of the empty container. It is intended to be provided.

Means for solving the problem

Corresponding to this object, the pouch container according to the present invention has a space for sealing the pouch material at the edge of the pouch material made of a flexible film material to fill the space between the pouch materials. The bouch container to be formed is characterized in that a folded portion is formed by folding back the voucher material in the space immediately adjacent to the seal portion along at least a part of the seal portion. Further, the pouch container of the present invention is a pouch container that seals at a seal portion at the edge of a pouch material made of a flexible film material to form a space for filling the contents between the pouch materials. A folded portion formed by folding back the pouch material in the space immediately adjacent to the seal portion along at least a portion of the seal portion, and all or a part of the folded portion is formed in a space near the center. It should be noted that it is fixed on the surface as a feature 5 [.

The invention's effect

According to the first aspect of the present invention, the side seal part is folded back and overlapped with the pouch container body part, and the pouch container body part and the side seal part have a three-dimensional three-dimensional arrangement relationship. Therefore, the bending rigidity of the entire body of the bouch container body and the side seal part is increased, and the rigidity against buckling is increased.

In addition, the fold of the folded portion is closer to the bouch container body than the boundary between the bouch container body and the side seal, and as a result, a soft bent edge of the body is formed on the edge of the bouch container. As a result, the feel of the operator's palm that grabs the bouch container is softened, and there is no risk that the operator's palm will be damaged.

Similarly, the bent edge of the fuselage can be freely deformed, so when the nozzle part of the bouch container is inserted into the mouth part of the empty container, the side seal part is retracted to an angle that does not interfere with the insertion, The nozzle diameter can be increased, the flow rate can be increased, and the time required for refilling can be shortened.

According to the invention described in claim 2, it can be applied to a typical standing pouch container having the most general configuration, and the application range can be widened.

According to the invention described in claim 3, the side seal part may be folded back in any direction on the front side or the back side of the bouch container. As a result, the appearance design of the bouch container becomes an obstacle. It is possible to realize the folding without.

According to the invention described in claim 4, since the folding direction of the seals on both sides of the bouch container may be the same or in the opposite direction, it is possible to give freedom to the design design of the bouch container. it can.

According to the invention described in claim 5, the rigidity of the nozzle can be improved, and the side seal that is stretched when the nozzle is inserted into the mouth of the empty container is folded back so as not to interfere. Therefore, the diameter of the liquid passage in the nozzle can be designed to be large, and the content liquid pouring performance can be improved.

According to the invention described in claim 6, it is possible to improve the feeling of use of the branched pouch that is gripped so as to sandwich both side seal portions.

According to the seventh aspect of the present invention, the ribs partially ununiformize the thickness of the bouch before filling, and the posture of the bouch is deteriorated when the bouches are stacked. The portion eliminates the deviation of the thickness of the bouch container and gives uniformity, so that the handleability of the bouch container can be improved.

According to the invention described in claim 8, since the folded portion does not reach the planned opening position of the dispensing nozzle, the folded portion does not obstruct the opening of the planned opening position of the dispensing nozzle.

According to the invention described in claim 9, the folded portion is fixed to the surface of the pouch container and floats. Since the user's palm does not come into contact with the edge of the hard side seal, the user will not have a hard discomfort. Also, handling of the bouch container is easy in the filling machine for contents.

According to the invention described in claim 10, since the end of the fold of the folded portion does not appear on the outer periphery of the pouch container, it is not necessary to newly round the corner portion, and the pouch container can be easily formed. According to the invention described in claim 11, the folded portion is formed so as to avoid the unsealed portion for filling the contents of the bouch container, which obstructs the sealing after filling the contents of the unsealed portion. There is nothing to do.

According to the invention described in claim 12, since the folded portion is formed in the other portion except the bottom portion where the bouch material is stacked in multiple layers, the folding operation and the formation of the pouch container are easy. According to the invention described in claim 13, since the width of the upper and lower parts of the bouch container is configured to be smaller than the width of the trunk part, the folding portion is fixed for filling the contents of the upper and lower parts of the bouch container. It can be processed only in the body of the bouch container without touching the unsealed part and the bottom part, and it is easy to mold and fix the folded part.

According to the invention described in claim 14, not only the feel to the bouch becomes soft, but also the gripping property is improved.

Brief Description of Drawings

Fig. 1 Front view of the bouch container.

Fig. 2 A-A cross-sectional explanatory view in Fig. 1.

Fig. 3 Cross-sectional explanatory drawing of another pouch container.

Fig. 4 Explanatory drawing of the front view showing the state where the dispensing nozzle is inserted into the mouth of the empty container.

Fig. 5 An illustration of the horizontal and vertical cross sections showing the state where the dispensing nozzle is inserted into the mouth of the empty container.

Fig. 6 Cross-sectional explanatory drawing showing the fixed state of the folded part

Fig. 7 Cross-sectional explanatory drawing showing the fixed state of other folded parts

Fig. 8 Cross-sectional explanatory drawing showing the fixed state of other folded parts

Fig. 9 Partial view showing the folded part of the pour nozzle part of the bouch container

Fig. 10 Explanatory drawing of pouch container of other embodiment

Fig. 1 1 Front view of a bouch container according to another embodiment Fig. 1 2 is a view showing a branched standing pouch according to another embodiment, and is a front view showing a state in which the nozzle is bent downward.

Fig. 1 3 Front view showing a state where the nozzle of a branching standing vouch of another embodiment is raised

Fig. 1 4 Front view showing a standing pouch with a recessed gripping part Explanation of symbols

1 a. 1 b, 1 c, I d.

2 Front view ir

3 Rear piece

4 Bottom piece

5 Right side seal

6 Left side seal

7 Torso

8 Bottom line

1 0 Empty

1 1 Bottom

1 2 Upper edge

1 3 Outlet nozzle

1 4 Liquid passage

1 5 Tube

1 6 Seal part

1 7 Seal part

1 8 Outlet

1 9 border

2 1 Tab

2 2 Easy opening line

2 3 Fold

2 4 Fold

2 5 ribs 2 6 Folding part

2 9 Single-sided adhesive tape

3 1 Empty bottle

3 2 mouth

3 3 Sealed part after filling

3 4 Rounded part

3 5 Bottom edge

5 1 Branching standing pour

5 2 Torso

5 3 Nozzle

5 5 Recess for gripping

5 6 Edge imaginary line before wrapping

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, details of the present invention will be described with reference to the drawings with regard to the best embodiment.

In FIGS. 1 and 2, l a is a pouch container. The bouch container l a consists of three pieces: a front piece 2, a back piece 3, and a bottom piece 4. Each face piece is made of a flexible film material. The front face piece 2 and the back face piece 3 are positioned opposite to each other, and heat seals are formed on both the left and right edges to form side seals 5 and 6. The bottom piece 4 is sandwiched between the front piece 2 and the back piece 3 in the portion corresponding to the bottom of the bouch container at the lower end of the trunk portion 7, and the periphery of the bottom piece 4 The part heat seals with the front piece 2 and the back piece 3 to form the bottom seal 8 to form the bottom portion 11 of the pouch container. The body 7 comprises a void 10 surrounded by the front and back double-sided pieces 2, 3 and the bottom piece 4, and this void 10 is filled later with contents, but the contents are void 1 Therefore, when the contents are not filled, the upper edges 12 of the front piece 2 and the back piece 3 are unsealed parts that are not sealed. The part to be sealed after filling is 3 3

A pouring nozzle portion 13 is formed at the corner of the upper end of the pouch container 1a (upper left corner in the case of FIG. 1).

The dispensing nozzle portion 13 is formed by using two body members, that is, a front piece 2 and a back piece 3. The dispensing nozzle part 1 3 is composed of a cylindrical part 15 that divides the liquid passage 14 and a heat seal on both sides of the cylindrical part 15 1 6 and 1 7 The base end of the liquid passage 14 communicates with the space 10 in the body 7, and the spout 18 at the upper end is closed with a tap 21. Between the tab 21 and the spout 18, an easy opening line 2 2 is formed on the front piece 2 and the back piece 3. In addition, ribs 25 are formed on the front piece 2 and the back piece 3 so as to project outwardly to maintain the conduction of the content passage. The form of such ribs may be extended outward or recessed inward, or a combination of both.

It is particularly important that the right side seal 5 and the left side seal 6 are formed by heat sealing, and then the front piece 2 corresponding to the unsealed space 10 closer to the center than the fold 2 3 described later. Or it is folded back to overlap the back piece 3. Further, in the pouring nozzle 1 3 as necessary, the heat seals 16 and 17 are folded back toward the front piece 2 or the back piece 3 corresponding to the liquid passage 14. Of the bottom seal 8, the portion overlapping the left and right side seals 5, 6 is also folded back so as to overlap the front piece 2 or the back piece 3. The folded folds 2 3 are formed along the heat seals 5 and 6 in the immediate vicinity of the side seals 5 and 6. Fold 2 3 is located along the entire length of heat seals 5 and 6, or along part or extension of it, but slightly at the side of void 10 from the boundary between void 10 and heat seal 5, 6 Located at the entrance. Accordingly, the folded portion 26 to be folded is composed of the unsealed void portion adjacent to the side seal outside the fold 23 and the side seal. The folding direction of the side seals 5 and 6 at the fold 2 3 is the same direction as shown in Fig. 2, that is, the same direction as the front piece 2 or the back piece 3 or the opposite direction as shown in Fig. 3. That is, the direction in which the front piece 2 and the back piece 3 overlap with different body materials may be used. In the case of a general standing bouch, the intersection of the bottom seal inner edge and the side seal inner edge is made to coincide with the upper end of the bottom piece. This is the point where stress concentrates when a drop impact is applied to the pouch, and the bag breaks when the intersection of the seals deviates greatly.

In this effort, there is a fold 23 on the inner side of the inner edge of the side seal (boundary 19), which has the effect of mitigating stress concentration at the seal intersection and provides good drop resistance. Further, it is preferable that the intersection between the inner edge of the bottom seal and the crease 23 is coincident with the upper end of the bottom piece 4 because the bottom strength is further improved. As for the method of folding, in the well-known bag-making process of a bouch container, after the side seal portion is formed, each of the bouch containers is folded using a die after being cut for each bouch container in the cutting process. When the pouch container is provided with a pouring nozzle portion 13, the folding is performed even in the vicinity of the pouring nozzle portion 13 at the fold 2 4 and the liquid passage 1 immediately adjacent to the seal portions 16, 17. The 4 side is also folded, but in that case there is a part where the crease line becomes a curve near the pouring nozzle, so it is necessary to heat the mold to heat and soften the folded part. The operation of the pouch container 1 constructed in this way is as follows.

In the filling plant for the bouch container 1 manufactured in the bag-making process, the contents are filled from the part 3 3 after sealing that forms the inlet of the upper edge 12 2, and the part 3 3 after sealing is scheduled to be sealed. Sealed to complete the bouch container. When filling the contents, the force to open the bottom piece 4 in a folded state prior to filling The conventional bouch may be difficult to open because the film is in close contact. The bouch of the present invention has the effect of shifting the film with the front and back in close contact with each other by folding back in a space near the side seal, and the bottom piece 4 can be easily opened. When the pouch container is displayed in an upright position at the store, the trunk 7 and the left and right side seals 5 and 6 that overlap with it act as ribs to increase the rigidity of the pouch container and Hold upright. In the prior art listed in the patent literature, additional space is added to the hard side seal to improve self-sustainability, making it difficult for the voids near the side seal to open and reducing the volumetric efficiency (capacity that can be filled relative to the surface area) .

In the present invention, since the folds 23 are soft and easy to open, the pouch cross section can be expanded to a shape close to a circle, and the volumetric efficiency is good. Also, it becomes easier to grasp from either direction by rounding.

When pouring out the contents of the pouch container as in the case of refilling into an empty bottle, grasping the tab 2 1 and cutting it out with the easy-open wire 2 2 and cutting it out from the force of the dispensing nozzle 1 3 It opens and the liquid contents can be dispensed. If the side seals 5 and 6 are folded back on the tab 21, the thickness of the tabs 21 and the side seals 5 and 6 is increased, and the rigidity of the tab 21 is increased. Easy to operate.

Next, as shown in Fig. 4, the pouring nozzle part 13 is inserted into the mouth part 3 2 of the empty bottle 31 and the content liquid is injected into the empty bottle. As shown in Fig. 5, the sealing parts 1 6 and 1 7 of the pour container's pouring nozzle part 1 3 fold into the crease 2 3 when inserting the pouring nozzle part 13 into the mouth part. Since the evacuation takes place in an unobstructed position, remove the dispensing nozzle 1 3 into the mouth of the empty bottle 3 1

3 Can be fully inserted into 2. Furthermore, since the pouring nozzle part 13 can be made as thick as the opening part 3 2, the injection time can be shortened. The soft crease 2 3 stabilizes the contact state with the mouth 3 2 of the empty bottle 3 1 and supports the bouch container stably. When performing this injection operation, the operator grasps the pouch container 1 with the palm, and the side edge of the pouch container 1 hits the palm at that time, but the right side seal is placed on the side edge of the pouch container 1. 5.Left side seal 6 is not protruding, but flexible 1.Front fold 2 or back fold 3 2 that is a soft soft body material appears. Although it is rigid by side nose 5 and left side seal 6, the touch feeling is extremely soft and soft. As described above, according to the present invention, the hard and sharp edge portion of the heat seal portion of the pouch container edge portion is not exposed to the outside, and the soft edge portion appears on the bouch edge portion. In addition, when a nozzle is installed in the bouch container, the side seal part at the nozzle edge may obstruct the insertion of the nozzle into the mouth of the empty container. You can get no pouch container.

Moreover, there is no restriction | limiting in particular as a flexible film material used for the bouch container 1. FIG. Examples of resin materials suitable for forming the film material include crystalline polypropylene, crystalline propylene-ethylene copolymer, crystalline polybutene 1, crystalline polybutene 4-methylpentene 1, low-density polyethylene, and medium-density polyethylene 1. Or polyolefins such as high-density polyethylene, ethylene monoacetate butyl copolymer (E VA), ethylene monoethyl acrylate copolymer (EEA), ion-crosslinked olefin copolymers (ionomers), polystyrene, Aromatic vinyl copolymers such as polymers; Halogenated bur polymers such as polyvinyl chloride and biridene chloride resins; Atalonitrile-styrene copolymers, Atallononitrile-styrene-butadiene copolymers, etc. Nitryl polymer; nylon 6, nylon 6 6, para Other meta such polyamides xylylene adipamide; can be exemplified thermoplastic resins Poriasetanore, etc. and poly Okishimechiren like; polyethylene terephthalate, Poriesutenore such polytetramethylene terephthalate; various polycarbonates. In addition to these thermoplastic resins, paper may be used. Film materials made of these materials are used after being unstretched, uniaxially stretched, or biaxially stretched.

Furthermore, the film material used for the bouch container 1 can be constituted by laminating these film materials in a single layer, or by laminating two or more kinds, and also, one kind of these film materials, or two or more kinds. And a metal foil such as aluminum, a vapor deposition film of metal or metal oxide, paper, cellophane, and the like can be bonded together. As a preferable film material, for example, a stretched nylon film is used as an outer layer, and a polyolefin such as low-density polyethylene or polypropylene is used. A two-layer structure with an in-film as an inner layer, a two-layer structure with a stretched polyester film as an outer layer, and a polyolefin film as an inner layer, and a three-layer structure in which a metal foil such as aluminum is laminated between the outer-layer films In the production of these laminated films, an adhesive and an anchor agent can be interposed between the respective layers as necessary.

Therefore, the layer structure of the film material is selected in accordance with the properties of the contents to be filled in the bouch container 1. For example, when low cost is required such as a pouch container for a refill detergent, When a laminated film having a structure is used and storage stability is required like a seasoning bouch container, a laminated film having a three-layer structure or more including aluminum foil may be used. Even in applications where the contents are sterilized by retort, such as food and beverages, the bouches of the present invention can be used without problems. In order to keep the folded part 2 6 folded back at the crease 2 3 in the space inside the crease 2 3, the front piece 2 in the 0 and the back piece 3 can be maintained as described above. 2 Use the plastic deformation of the pouch material when processing 3 but without using the plastic deformation or in addition to using the plastic deformation, the front piece 2 that overlaps the folded parts 2 6 The posture of the folded portion 26 may be maintained by being fixed to the back piece 3.

In the embodiment shown in FIGS. 6 to 8, the folded portion 26 of the pouch container is overlapped with the front piece 2 or the rear piece 3 of the space 10 closer to the center than the crease 2 3, and further the front piece 2 or the rear piece. Fixed to 3.

The pouch container 1b of the embodiment shown in FIG. 6 is a space near the center of the fold 2 3 in the entire area facing the front piece 2 or the back piece 3 of the folded portion 26. This is an embodiment fixed to the piece 3.

The pouch container 1c of the embodiment shown in FIG. 7 is a front side piece of a space 10 closer to the center than the fold 2 3 on the entire surface of the seal part 1 6 facing the front piece 2 or the back piece 3 of the folded part 2 6 It is fixed to 2 or back piece 3. As a technique for fixing the folded portion 26, ultrasonic welding, adhesion using an adhesive, adhesion using a double-sided adhesive tape, adhesion using a single-sided adhesive tape, and the like can be employed.

The bouch container 1 d of the embodiment shown in FIG. 8 is folded from above the folded portion with the single-sided adhesive tape 29 covering the outer edge of the seal portion 16 of the folded portion 26 using the single-sided adhesive tape 29. It is an embodiment fixed to the surface of the front piece 2 or the back piece 3 of the space 10 closer to the center than the eyes 2 3 When the folded portion 26 is fixed to the surface of the pouch container in this way, the folded portion 26 does not float from the surface of the pouch container, so that the user's palm is placed on the edge of the hard side seal. Since there is no contact, there is no hard discomfort to the user. In addition, in the content filling device, the pouches are supplied one by one from the stacked state, but if the folded portion is fixed, there is no risk of the pouches getting caught and handling of the pouch containers becomes easy. As shown in Fig. 9b, the side seals 5 and 6 are folded back at the folds 2 and 3 so that the side seals 5 and 6 folded back toward the inside are the tip of the dispensing nozzle 1 3 The easy opening line 2 between the two taps 2 1 overlaps with the easy opening line 2 2 and may obstruct the cutting of the tab 2 1 with the easy opening line 2 2. In this case, the bottom ends of the side seal parts 5 and 6 It is necessary to evacuate to a shape that does not overlap the easy-open line 2 2 even if the shape is folded. For example, as shown in FIG. 9 (a), when the easy-open line 22 is formed downwardly to the right, the shape of the lower edge 35 of the side seal part 5 is downwardly downward before folding. If it is formed, the lower end edge 35 of the side seal part 5 will turn downward to the right parallel to the direction of the easy opening line 2 2 and will not become an obstacle to the cutting of the easy opening line 2 2. In particular, if the edge of the folded portion and the easy opening line 2 2 are substantially coincident, the opening direction is guided by the edge, and the opening force is easily opened along the edge 2. Since it concentrates on 2, it can be opened with lighter force.

FIG. 10 and FIG. 11 show a pouch container 1 e according to still another embodiment of the present invention.

In the bouch container 1e according to this other embodiment, the folded part 26 is not formed along the entire formation region of the side seal part, but the unsealed part or the bouch container for filling the contents of the bouch container. The folded portion 26 is not formed on the bottom portion of the plate, and the folded portion 26 is formed only on the other portions. That is, as shown in FIG. 10, the bouth container 1 e is composed of three pieces of force of the front piece 2, the back piece 3 and the bottom piece 4, and the front piece 2 and the back piece 3 are located opposite to each other, and both left and right edges. The side seal is configured to form the body part 7 of the bouch, and the part corresponding to the bottom part of the pouch container 1 e at the lower end of the body part 7 is folded between the front piece 2 and the back piece 3. The bottom piece 4 is sandwiched, and the peripheral part of the bottom piece 4 is heat-sealed with the front piece 2 and the back piece 3 to form the bottom seal 8 to form the bottom part 11 of the pouch container. The pouch container 1e is the same as the pouch container 1a according to the above embodiment, but the pouch container 1e is a non-sealed portion for filling the contents in order from the top in the vertical direction of the bouch container 3 3, It has a body part 7 and a bottom part 1 1 but a part to be sealed 3 3 after filling, The width perpendicular to the vertical direction of the body part 7 and the bottom part 1 1 is not the same, and the part to be sealed after filling 3 3 and the bottom part 1 1 are configured to be smaller than the body part 7 to form a folded part 26. Therefore, when the fold 2 3 is formed in the body portion 7 in the vertical direction, the fold 2 3 has a shape that does not cover the portion 3 3 to be sealed and the bottom portion 11 after the filling.

In other words, the folded portion is formed in the body portion 7 but not in the planned sealing portion 33 after filling and the bottom portion 11.

Usually, the four corners of the bouch are rounded into an R shape (notation 3 4 in Figure 11) so as not to be sharp. If the wrapping reaches the part to be sealed or the bottom after filling, even if the four corners of the original bouch are rounded, new sharp corners appear due to the wrapping, so cut out the R shape in advance according to the wrapping position. Or cut off again after turning back.

In the case where the folded portion is not formed on the planned sealing portion or bottom after filling, the four corners of the original bouch remain as it is, so the above alignment and additional processing are not necessary.

As for the part to be sealed after filling, when sealing after filling, if there are folded parts on both side edges, the side edges will seal 4 and the center part will have a non-uniform thickness, and the sealing pressure will be equalized. Although it is necessary to take measures to make it-, if no fold is provided, it can be sealed as before.

Since sealing after filling is performed by a filling company, it is important that conventional equipment can be used. As for the bottom part, the bottom part with the bottom material sandwiched is four-layered. If this part is folded back, the difference in thickness between the folded part above the bottom part is large and the appearance is poor. In addition, although it is difficult to put a crease, the pouch container 1 e of the present invention is improved over those points. FIGS. 12 and 13 show a pouch container 1 f according to still another embodiment of the present invention. A bouch container 1 f according to another embodiment is an application of the present invention to a branched standing pouch. In this branching type standing bouch 51, the upper end of the body 52 is branched into the contents filling port and the nozzle 53, and the nozzle 52 in the center of the upper end of the bouch as shown in Fig. 12 (a). This nozzle is a voucher in which the nozzle part 5 3 communicates with the inside of the body part 5 2 when the nozzle part 5 3 is brought into the upright state shown in FIG. In order to prevent the hard side seal part from hitting the fingers and causing discomfort to the user when the part 5 3 is started up, it is bent from the space inside the side seal part to the body side. . In this embodiment, the radius of the rounded shape of the bottom corner is made larger than usual, and the end of the crease 23 is placed in the middle to avoid the appearance of a sharp edge on the outer periphery of the pouch container. .

Figure; In the bouch container of the embodiment illustrated in FIG. 4, the folded portion forms a holding recess. In this example, a folded part is formed only in a part in the height direction, leaving a part that does not fold up and down with respect to a rectangular bouch container with a pouring spout on the upper edge, so that A gripping recess 55 that is recessed inside the virtual line 5 6 is formed. In addition to this, the gripping recess 55 may be formed by forming the folded portion in the entire height direction and enlarging a part of the folded width, The side edge of the pouch container before the folded portion is formed as a curved line that is recessed inward, and the entire concave portion or curved section can be folded back with the same width to form the holding concave portion.

In this way, a soft touch can be given to the fingertip at the folded portion, and the bouch container can be stably held by placing the finger on the holding recess.

The present invention has been described with reference to the preferred embodiments. However, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the present invention. Yes.

Claims

The scope of the claims

1. In a pouch container that forms a space for filling contents between the pouch materials by sealing at a seal portion of a pouch material made of a flexible film material, at least of the seal portion. A pouch container comprising a folded portion formed by folding back the pouch material in the space immediately adjacent to the seal portion along a portion.

2. The pouch material has two body members arranged opposite to each other and a bottom member sandwiched between the two body members, and the folded portion is formed on the moon material. The pouch container according to claim 1, wherein

3. The direction of folding is the front side or the back side of the pouch container.

4. The bouch container according to claim 1, wherein when the folded portion is formed on both edges of the pouch container, the direction of the folding is the same for all the folded or opposite to each other.

5. The pouch container is formed with a pour-out nozzle portion having a content passage communicating with the cavity, with a distal end portion formed by the body being closed and a base end portion being communicated with the void. The pouch container according to claim 1, wherein the pouch container is formed on both side edges of the nozzle portion.

6. The pouch nozzle is a bifurcated pouch, and a dispensing nozzle portion having a content passage in which a distal end portion is closed and a proximal end portion communicates with the void is formed in the branched portion. 1 pouch container

7. The pouch container is characterized in that a content passage is formed in the body and a rib is formed in the same material for maintaining the conduction of the content passage. Bouch containers as described in

8. At least a part of the edge of the folded portion formed at the closed tip of the pouring nozzle is formed so as to be along the planned opening position of the pouring nozzle. Is a pouch container according to 6

9. The pouch container according to claim 1, wherein all or a part of the folded portion is fixed to the surface of the space closer to the center than the fold.

10. The bouch container according to claim 1, wherein the folded portion is formed excluding at least a part of a corner portion of the pouch container.

1 1. The pouch container according to claim 1, wherein the folded portion is formed except for an unsealed portion for filling the contents of the bouch container.

1 2. The bouch container according to claim 2, wherein the folded portion is formed excluding the bottom material.

1 3. A bouch container having an unsealed part, a body part and a bottom part for filling contents in order from the top in the longitudinal direction of the bouch container, wherein the longitudinal direction of the unsealed part, the body part or the bottom part The width perpendicular to the direction is configured such that the unsealed portion or the bottom portion is configured to be smaller than the body portion, and the folded fold is configured not to cover the unsealed portion and the bottom portion. The pouch container according to claim 1 or claim 2

1 4. The pouch container according to claim 1, wherein the folded-back portion forms a holding recess.