JP2009154923A - Pouch container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pouch container allowing a side seal part to be easily folded or rolled up when a content is discharged, in a pouch container having the folded side seal part. <P>SOLUTION: A vacant chamber for filling the content is formed between pouch raw materials by sealing seal parts 5 and 6 on the peripheral parts of the pouch raw materials 2 and 3 each made of a flexible film material. The folded part 26 is formed by folding at least a part of the seal parts 5 and 6 toward the center of the pouch along a folding line to form a weakened part 27 in the folded part 26, the weakened part having a rigidity smaller than that of the other part of the seal part. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a pouch container.

Pouch containers are deformable bag-like soft containers, and are often produced and used together with hard containers such as bottles as containers for storing liquid contents.
The pouch container has a body part having a vacant space for filling the contents by side-sealing the front piece and the back piece made of a flexible film-like material at the edge, 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 constitute a stand-up standing pouch that can be developed.
A pouch container constructed in this manner generally contains contents such as liquids, such as detergents, bleaches, softeners, laundry glue, shampoos, rinses, or edible oils, soy sauce, sauces, dressings, drinking water and the like.

The following problems have been pointed out in this pouch container.
First, when the pouch container is configured as a standing pouch, the standing pouch is filled with contents such as liquid and is displayed at a storefront in a standing state with the bottom down. The back piece is made of a highly flexible material in the form of a film, so the pouch container itself has low rigidity, it is difficult to maintain its posture when standing, the standing posture is distorted, and the head hangs down in the display state. Sometimes.

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 since this side seal part is cut in the manufacturing process, a sharp edge is formed, The touch of the pouch can be sharp and uncomfortable, and it can hurt your palm.
Therefore, the applicant of this patent application has proposed a new pouch container that solves these problems.

PCT / JP2007-062957 JP 2001-055246 A JP 2001-002089 A

That is, Patent Document 1 shows a pouch container in which a container body portion closer to the center than a side seal portion is folded.
In this pouch container, as shown in FIGS. 14 and 15, the pouch material 2, 3 made of a flexible film material is sealed at the edge seal portions 5, 6 and the contents are filled between the pouch materials. In the pouch container 100 forming the vacant chamber 10 for forming, a folded portion is formed by folding the pouch material of the vacant chamber nearest to the seal portion along a crease line 23 along at least a part of the seal portion. Then, 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 are in a three-dimensional three-dimensional arrangement relationship. As a result, the bending rigidity of the entire body increases and the rigidity against buckling increases. Further, since the fold line 23 having a folded semicircular cross section is the outermost edge of the pouch container, there is no possibility that the edge damages the palm of the operator who holds the pouch container.

    However, when the contents of these pouch containers are semi-solid gel-like contents, the operation of pushing out the contents while folding the pouch container to the spout and rolling it up as the contents are poured out. May be performed.

  However, the pouch with the side seal part folded has the above-mentioned advantages, but the folded side seal part exhibits rigidity against bending, which makes it difficult for the body part to be folded and rolled up. In addition, when the empty pouch container is discarded after the contents have been poured out, the pouch container must be handled in its original shape having a large surface area, which makes the disposal troublesome.

  Some conventional pouch containers that do not fold back the side seals allow the container body to be folded or rolled up when the contents are poured out. (See Patent Document 2 and Patent Document 3).

In this case, one or more weak lines such as scores or bending guide lines are provided on the container body in the lateral direction perpendicular to the winding direction.
However, since the rigidity of the portion where the side seal portion of the pouch container is folded back is much greater than the rigidity of the pouch container body portion against bending, the weak lines and bending guides described in Patent Document 1 and Patent Document 2 described above are used. The line is not necessarily sufficient for folding or winding up the pouch container.

  The present invention has been made in view of the circumstances as described above, and in a pouch container in which the side seal portion is folded, the folded portion of the side seal portion can be easily folded or rolled up when the contents are poured out. An object of the present invention is to provide a pouch container that can be used.

  Corresponding to this object, the pouch container of the present invention forms a vacant space for filling the contents between the pouch materials by sealing at the sealing portion at the edge of the pouch material made of a flexible film material. And forming a folded portion in which at least a part of the seal portion is folded toward the center of the pouch along a crease line, and forming a weakened portion having a lower rigidity than the other portions of the seal portion in the folded portion. Features.

In the invention described in claim 1, since the weakened portion that weakens the rigidity of the seal portion is formed in the folded portion where the seal portion is folded at the crease line, the seal portion is easily bent, and the pouch body is folded. Rolling up becomes easy and the contents can be easily poured out.
In addition, the volume of the used pouch container can be reduced by folding or rolling up the pouch body, thereby contributing to the volume reduction of dust.

    In the invention described in claim 2, even in the case of a pouch container in which the sealing part is folded back at the pouch body part deviated from the inner edge of the sealing part, or in the case of a pouch container in which the sealing part is folded back on the sealing part itself. Since the weakened portion is provided in the seal portion, it becomes easy to fold and roll up the pouch body portion, so that the design flexibility can be given to the type of the pouch container.

    In the invention described in claim 3, the shape of the weakened portion formed in the seal portion is formed in a triangle, a quadrangle, a polygonal cutout, a straight cut, or a through hole formed in the pouch material of the seal portion, the seal portion. Since the perforations or straight cuts or combinations thereof are made, the folding and winding characteristics of the pouch body can be selected for various types of pouch containers.

    According to the invention described in claim 4, since the weakened portion may be all or one of the two pouch members sealed by the seal portion, the characteristics of the weakened portion can be selected, and The weakened portion may be provided only on one sheet of pouch material that is on the inside, and in this case, since the weakened portion does not appear on the surface of the pouch container, it may cause the weakened portion to catch on another pouch container. Neither does it cause a restriction on the appearance of the pouch container.

    According to the fifth aspect of the present invention, since the weakening portion is provided on a straight line perpendicular to the center line of the nozzle portion, folding or winding is performed correctly toward the nozzle, and the content is pushed out. , The pouring can be performed satisfactorily.

    According to the invention described in claim 6, since the empty part of the folded or rolled up pouch container is held by being hooked to the hook, the empty part does not move and get in the way, and is compactly folded. Can be discarded.

  The details of the present invention will be described below with reference to the drawings.

    1 and 2, reference numeral 1 denotes a pouch container. The pouch container 1 includes 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 piece 2 and the back piece 3 are positioned opposite to each other, and heat sealing is performed at both the left and right edges to form side seal portions 5 and 6. A bottom piece 4 is sandwiched between the front piece 2 and the back piece 3 at a portion corresponding to the bottom of the pouch container at the lower end of the trunk portion 7, and the periphery of the bottom piece 4 is formed. The part heat seals with the front piece 2 and the back piece 3 to form the bottom seal 8 to form the bottom 11 of the pouch container. The body portion 7 constitutes a vacant chamber 10 surrounded by the front and back double-sided pieces 2 and 3 and the bottom piece 4, and the vacant chamber 10 is filled later with contents.

  The pouch container is provided with a pouring nozzle 12 (nozzle part) for pouring the contents. There are a case where a member different from the material of the pouch container is used as the device for the dispensing nozzle as the dispensing nozzle 12 and a case where the pouch material itself of the pouch container as shown in FIG. is there.

In this embodiment, a dispensing spout 13 is used as a dispensing nozzle device. That is, the pouring spout 13 is attached to the center of the upper end of the pouch container 1.
The dispensing spout 13 has a body portion 14 having a liquid passage formed in the center line direction, and is liquid-tightly sealed with a pouch material at the base end portion, and the liquid passage communicates the inside and outside of the empty chamber 10. The front end portion of the body portion 14 is closed with a removable cap 15. A flange 16 projects from the body portion 14. The flange 16 is provided with a hook 32 (restraint portion 24) described later.

The folded crease line 23 is formed on the side seal portions 5 and 6 along the longitudinal direction of the side seal portions 5 and 6, or is formed along the side seal portions 5 and 6 in the immediate vicinity of the side seal portions 5 and 6. Yes. The crease line 23 is located along the entire length of the side seal portions 5 and 6, or a part or extension thereof. In this embodiment, the crease line 23 is formed on the side seal portions 5 and 6. In addition, as in the embodiment shown in FIG. 4, the folded portion 26 that is folded when it is positioned slightly closer to the vacant chamber 10 side than the boundary 18 between the vacant chamber 10 and the side seal portions 5, 6 has a fold line 23. It is comprised by the part of the unsealed empty room adjacent to the outer side seal part, and the side seal part.
In the folding forming method, in the well-known bag making process of the pouch container, after the side seal portion is formed, the pouch container is folded for each pouch container by the cutter in the separating process using the separated mold.

A weakened portion 27 is formed in the folded portion 26. The weakened portion 27 is a portion in which the rigidity of the left side seal portion 5 and the right side seal portion 6 is weaker than the other portions of the folded portion 26, and thus the side seal portions 5 and 6 of the trunk portion 7 are bent at this portion. The operation is such that the left side seal part 5 and the right side seal part 6 are folded and rolled up when the contents are pushed out from the trunk part 7 through the pouring spout 13 while folding or winding up the trunk part 7. It will be bent at the time of.

The weakening portion 27 is formed of a triangle or a semicircle that is opened from the fold line 23 of the left side seal portion 5 and the right side seal portion 6 as shown in FIGS. A triangle opened from the fold line 23 with a part 26 left, a semicircle (FIG. 3), a triangle opened from the outer edge 31 of the side seal portions 5 and 6 (FIG. 4), a polygonal cutout, and a left side seal portion 5 , A triangle, a quadrangle, other polygons, a circle, an ellipse, an oval hole (FIG. 5) formed in the width of the right side seal part 6 or a direction crossing the left side seal part 5 and the right side seal part 6 It consists of perforations, scores, and micro-scratches (FIG. 7).

The notches, holes, and perforations constituting these weakened portions 27 are shown in FIGS. 2, 3, 4, 5 (b), and 6 (c) in the left side seal portion 5 and the right side seal portion 6, respectively. As shown, it may be formed over all the pouch materials of the front side piece 2, the back side piece 3 and the bottom side piece 4 constituting the left side seal part 5 and the right side seal part 6, but FIGS. 6 (a) and 6 (b), one of the front piece 2, the back piece 3, and the bottom piece 4, for example, is folded and formed inside and hidden from the outside. Also good.

When the perforation is used as the weakening portion 27, it is provided in the range X of the side seal portion 5 as shown in FIG. Good.
A known processing method can be used for the formation of the weakened portion. When forming with a notch or a hole, a die or a cutter is used. When forming with a perforation, processing is performed by a grindstone, laser processing, etc. be able to.

Further, the molding can be performed at the same time as the formation of the side seal portion, at the same time as the separation process, at the same time as the above-described folding process, or as an independent process according to each mode.
These weakened portions are preferably formed so that the weakened portions of the left side seal portion 5 and the right side seal portion 6 are symmetrical on a virtual straight line 22 perpendicular to the center line of the pouch container 1 in the winding direction. (FIG. 8), when the center line of the pouch container 1 and the center line of the dispensing spout 13 do not coincide with each other, as shown in FIG. It is more convenient to fold or roll up the body portion 7 of the pouch container 1 toward the spout 13 when the contents are extruded and poured out, by providing on a virtual straight line 22 perpendicular to the center line 13 It is.
Next, the pouch container 1 is provided with a restraining portion 24 that restrains and holds the body of the pouch container 1 that is folded or rolled up. The restraining portion 24 is constituted by a hook 32 formed integrally with the pouring spout 13 at the end of the flange projecting from the side of the pouring spout 13. The dispensing spout 13 is inherently rigid, and the dispensing spout 13 has a flange 16 that holds the pouch container 1 to the chuck of the apparatus in the contents filling process and the capping process, so that FIG. As shown, if a hook 32 capable of engaging with the lower end of the trunk portion 7 of the pouch container 1 (the end edge folded along the imaginary straight line 22 in FIG. 8) is provided at the end thereof, The lower end of the body part 7 can be engaged with the hook 32 to hold the folded or rolled up body part 7, and the body part 7 can be prevented from floating. Alternatively, as shown in FIG. 10, a notch 33 may be formed in the flange 16 and the lower end portion of the pouch container 1 may be locked in the notch 33.

Moreover, as shown in FIGS. 12 and 13, the body 7 that is folded or rolled up by assembling a separate restraining member 34 to the extraction spout 13 can be bound.
Although the restraining member 34 has a rectangular frame shape as a whole, the restraining member 34 includes two frame members 35 and 36, and the frame members 35 and 36 cooperate to constitute the frame-like restraining member 34. The frame members 35, 36 have hooks 37, 38 at their engaging end portions, and are elastically deformed with the spout spout 13 sandwiched therebetween to engage the hooks 37, 38 to constitute the restraining member 34. Then, the folded-up or rolled-up portion of the body portion 7 of the pouch container 1 is constrained therein to maintain the posture, or the hooks 37 and 38 are removed to disassemble the constraining member 34.
The restraining part 34 can be used as a grip if it is formed to a size that can hold the rolled pouch container body part and can hold the frame members 35 and 36 with fingers.
In this case, as shown in FIG. 13, the flexible pouch container can be firmly held, and the cap can be easily opened and closed.

In the pouch container 1 configured as described above, since the weakened portion that weakens the rigidity of the seal portion is formed in the folded portion where the seal portion is folded at the fold line, the seal portion is easily bent, and the pouch body is folded. Rolling up becomes easy and the contents can be easily poured out.

In addition, the volume of the used pouch container can be reduced by folding or winding up the pouch body, thereby reducing the volume of dust.
Even in the case of a pouch container in which the folding of the sealing part is performed at the pouch body part deviated from the inner edge of the sealing part, or in the case of a pouch container in which the folding of the sealing part is performed on the sealing part itself, a weakening part is provided in the sealing part, Since it is easy to fold and roll up the pouch body, it is possible to give design freedom to the type of the pouch container.
The shape of the weakened part formed in the seal part is either a triangle, quadrangle, polygonal cut-out on a straight line, or a through hole formed in the pouch material of the seal part, or a combination thereof. The folding and winding characteristics can be selected for various types of pouch containers.

Since the weakened portion may be all or one of the two pouch members sealed by the seal portion, the characteristics of the weakened portion can be selected, and only one pouch material that is inside of the folded portion can be selected. A weakened portion may be provided. In this case, the weakened lower portion does not appear on the surface of the pouch container, so that the weakened portion does not cause a catch on another pouch container and restricts the appearance of the pouch container. There is no cause.
Since the weakening portion is provided on a straight line orthogonal to the center line of the nozzle portion, folding or winding will be performed correctly toward the nozzle direction, and the contents can be pushed out and poured out satisfactorily.

Since the empty portion of the folded or rolled up pouch container is held by being hooked to the hook, the portion does not move and become obstructive.
Since the hook can be configured by using a component part of the nozzle part such as a spout that has rigidity originally, no special parts are used to configure the hook, and the rigidity of the hook should be increased. Can do.

The shape of the folded or rolled up empty portion of the pouch container is more reliable.
Moreover, there is no restriction | limiting in particular as a flexible film material used for the pouch container 1. FIG. Examples of resin materials suitable for constituting the film material include crystalline polypropylene, crystalline propylene-ethylene copolymer, crystalline polybutene-1, crystalline polybutene 4-methylpentene-1, low density polyethylene, medium density -Polyolefins such as polyethylene or high-density polyethylene, ethylene-vinyl acetate copolymer (EVA), ethylene-ethyl acrylate copolymer (EEA), ion-crosslinked olefin copolymer (ionomer); polystyrene, styrene-butadiene Aromatic vinyl copolymers such as copolymers; Halogenated vinyl polymers such as polyvinyl chloride and vinylidene chloride resins; Nitrile polymers such as acrylonitrile-styrene copolymers, acrylonitrile-styrene-butadiene copolymers; Nylon 6 , Nylon 66, para or me Such polyamides xylylene adipamide, polyethylene terephthalate, polyesters polytetramethylene terephthalate; various polycarbonates; may be mentioned thermoplastic resins such as polyacetal such as polyoxymethylene or the like. 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 pouch container 1 can be constituted by laminating these film materials in a single layer, or by laminating two or more kinds, and one kind or two kinds or more of these film materials. Further, a metal foil such as aluminum, a vapor deposition film of metal or metal oxide, paper, cellophane, or the like can be bonded together. Preferred film materials include, for example, a stretched nylon film as an outer layer, a two-layer structure having a polyolefin film such as low density polyethylene and polypropylene as an inner layer, a stretched polyester film as an outer layer, and a two-layer structure having a polyolefin film as an inner layer, and Among these, a film having a three-layer structure in which a metal foil such as aluminum is laminated between outer layer films, and the like are included. In the production of these laminated films, an adhesive and an anchor agent are interposed between the respective layers as necessary. You can also.

And the layer structure of the said film material is selected according to the property of the content with which the pouch container 1 is filled, for example, when low cost is requested | required like a pouch container for refill detergents, it is a two-layer structure. When a laminated film is used and storage stability is required like a seasoning pouch container, a laminated film having a three-layer structure or more including an aluminum foil may be used. Even in applications where the contents are sterilized by retort such as foods and beverages, the pouch of the present invention can be used without problems.
As apparent from the above invention, according to the present invention, in the pouch container in which the side seal portion is folded, the folded portion of the side seal portion can be easily folded or rolled up when the contents are poured out. The purpose is to obtain.

  Moreover, according to this invention, it aims at obtaining the pouch container restraint tool which can restrain and hold | maintain the trunk | drum part of the pouch container folded and wound up, and can improve the discardability of a used pouch container. Is.

It is a figure which shows a pouch container, (a) is a front view, (b) is the bb part cross-section partial figure in (a), (c) is side explanatory drawing of the bent state. It is a figure which shows a weakening part, (a) is a front view, (b) is the bb part sectional drawing in (a). It is a figure which shows another weakening part, (a) is a front view, (b) is the bb part sectional drawing in (a). It is a figure which shows another weakening part, (a) is a front view, (b) is the bb part sectional drawing in (a). It is a figure which shows another weakening part, (a) is a front view, (b) is bb section sectional drawing in (a) figure, (c) is sectional drawing which shows the embodiment different from (b), ( d) is a sectional view showing still another embodiment. Cross-sectional view showing various weakened parts It is a figure which shows another weakening part, (a) is a front view, (b) is sectional drawing. It is a figure which shows the position of a weakening part, (a) is a front view of a pouch container, (b) is a side view of the pouch container in the bent state Front view of the pouch container showing the position of the other weakened parts It is a figure which shows a restraint part, (a) is a side view of a spout, (b) is an enlarged view of a notch. Front view showing another pouch container Enlarged plan view of restraint member Perspective view of restraint member Front view of pouch container XX section sectional view in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Pouch container 2 Front piece 3 Back piece 4 Bottom piece 5 Left side seal part 6 Right side seal part 7 Body part 8 Bottom seal 10 Vacant room 11 Bottom part 12 Outlet nozzle 13 Outlet spout 14 Body part (spout)
DESCRIPTION OF SYMBOLS 15 Cap 16 Flange 18 Boundary 22 Straight line 23 Folding line 24 Restriction part 26 Folding part 27 Weakening part 31 Outer edge 32 Hook 33 Notch 34 Restriction member 35 Frame member 36 Frame member 37 Hook 38 Hook 100 Pouch container

Claims (6)

  Sealing at the sealing portion at the edge of the pouch material made of a flexible film material to form an empty space for filling the contents between the pouch materials, and at least a part of the sealing portion is a crease line A pouch container, wherein a folded portion is formed near the center of the pouch, and a weakened portion having a lower rigidity than other portions of the seal portion is formed in the folded portion.   2. The pouch container according to claim 1, wherein the crease line is provided on a pouch material in the vacant space immediately adjacent to the seal portion, or provided on the seal portion.   The shape of the weakened portion is a triangular, square, or polygonal cutout that opens to the outer edge of the seal portion, or a hole that is formed in the seal portion and penetrates the seal portion, or formed in the seal portion. The pouch container according to claim 1 or 2, wherein the pouch container is a perforated line or a straight cut, or a combination thereof.   The weakened portion is formed in common with a plurality of pouch materials sealed in the seal portion, or is formed in a part of the plurality of pouch materials. The pouch container according to any one of 3   5. The weakening portion is provided on one or a plurality of straight lines that are provided at the one edge portion and are orthogonal to a center line of a nozzle portion that communicates with the vacant chamber. Pouch container according to any   6. A nozzle member comprising a nozzle portion protruding outward from the barrel portion, and a restraining portion for locking the folded barrel portion is provided on the nozzle member. Crab pouch container

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