JP2005162283A - Pouch container with spout - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pouch container with a spout, which is given a large capacity and superior self-supportability by preventing heat welding of a part of side face gussets upon manufacturing the container. <P>SOLUTION: The pouch container with the spout has front/back surfaces 3 and the side face gussets 6, which are made of a film having a sealant layer on the inner surface thereof. The side ends of the gussets 6 are fusion-bonded by heat to the front/back surfaces 3, and the spout 7 is fusion-bonded by heat to the top 3d of the front/back surfaces 3. Inward folded parts 5 and an outward folded part 4 are formed on each side face gusset 6, where the inward folded parts 5 are folded not to overlap the fusion-bonded part 9 of the spout 7, and the outward folded part 4 is folded not to overlap the fusion-bonded part 8 of the side ends of the side face gusset 6. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a pouch container with a spout in which a spout is attached to a side gusset-type bag body.

  Conventionally, as a container for filling beverages, jelly-like foods, etc., side gusset-type bag bodies in which side gusset portions folded inside are heat-sealed on both side ends of front and back surfaces made of a flexible film, There is known a pouch container with a spout that includes a spout for filling filling attached to the upper part of the bag body. Furthermore, for the purpose of increasing the capacity of the bag body and improving the self-supporting stability, Japanese Patent Laid-Open No. 10-167286 proposes to use a side gusset portion in which two or more folds are formed. Such a pouch container with a spout has two side folds formed inside and a side fold formed on the side gusset part, that is, forms many ridges on the side gusset part. is there. This pouch container can use a relatively wide side gusset portion by removing a large amount of ridges, so that the capacity of the bag can be made relatively large and the bottom surface also has a large area, thereby improving the self-supporting stability. It can be done.

  By the way, in order to mechanically manufacture the side gusset-type bag body, as shown in FIG. 9, the side film original sheet 102 is sandwiched between both sides of the front and back film original sheet 101 while being folded. The sealing device 103 heats the front and back film original sheet 101 from above and below, and heat-melts the inner surface of the side end portion of the front and back film original sheet 101 and the inner surface of the side end portion of the side film original sheet 102 by a predetermined width. The side end fused part is formed, and the lower end part is thermally fused by the horizontal sealing device 104, and this is cut in the lateral direction by the cutter 105, whereby the side gusset bag body having the upper end opened. Can be manufactured.

  However, in the bag body described in the above publication, as shown in FIG. 2 and the like of the publication, the folding line is extended to the edge of the side end portion of the side gusset portion, that is, folded with the edge of the side end portion. Since the side gussets are folded so that the stitches coincide, when the bag is made by heat-sealing the front and back films and the side edges of the side films, the inner width of the folds is a predetermined width. There is a problem that heat fusion is performed for a portion (the width of the side end fusion portion). Thus, when the side gusset portion is heat-sealed by a predetermined width at the folding point, the side gusset portion is not fully opened at the time of filling, and the development area is reduced, so that the filling capacity is reduced.

Japanese Patent Laid-Open No. 10-167286

  Therefore, the present invention has an object of providing a pouch with a spout capable of preventing heat fusion of a folded portion of a side gusset portion at the time of bag making and increasing the capacity and improving the self-supporting stability. It is.

  The present invention includes, as means thereof, a front and back surface portion and a side gusset portion made of a film having a sealant layer on the inner surface, the side end portions of the side gusset portion being heat-sealed to the front and back surface portions, and a spout at the upper end portion of the front and back surface portions. The side gusset portion is formed with a valley fold portion that is folded inward and a mountain fold portion that is folded outward, and the valley fold portion does not overlap the fusion portion of the spout, and Provided is a pouch container with a spout in which a mountain folded portion is folded so as not to overlap a fused portion at a side end portion of a side gusset portion.

The pouch container with a spout is folded so that the side gusset portion forms a valley fold portion folded inward and a mountain fold portion folded outward, so that the side gusset portion is relatively wide. Can be used. Therefore, a large amount of filling can be filled in the pouch container. Moreover, since the bottom face of a large area can be formed even if the lower part of the front and back surfaces is folded, the self-supporting stability of the pouch container can be enhanced.
The mountain folds of the side gussets are folded so that they do not overlap the side end fused parts. When bags are made, the front and back sides and the side edges of the side gussets are heat-sealed. When forming a part, it can prevent that a part of mountain fold part is inserted | pinched and heat-sealed. On the other hand, the valley fold is folded so as not to overlap the spout fusion part, so that when the spout is heat-sealed to the upper end of the front and back surfaces, the valley fold of the side gusset part is It is not sandwiched between the spout and the front and back surfaces and heat-sealed.

  According to the pouch container with a spout of the present invention, since the side gusset portion is folded so as to form a valley fold portion and a mountain fold portion, a relatively wide one can be used. In addition, since this valley fold portion is formed so as not to overlap the spout fusion portion and the mountain fold portion does not overlap the side end fusion portion, a part of the side gusset portion is formed during bag making. Is not sandwiched between the spout fusion part and the side end fusion part and heat-sealed. Therefore, the folded side gusset part can be fully opened at the time of filling. Therefore, it is possible to provide a pouch container with a spout having a large filling capacity and having excellent stability when the bottom surface is formed to be independent.

Hereinafter, the present invention will be specifically described with reference to the drawings. For convenience, as a term indicating a direction, “inside” refers to the direction of the storage unit 21 or the spout 7 where the filling is filled, and “outside” refers to a direction away from the storage unit 21 or the spout 7.
In FIG. 1 to FIG. 5, reference numeral 1 is a side gusset type in which both side gusset portions 6 folded so as to form a mountain fold portion 4 and a valley fold portion 5 are formed on both sides of the front and back surface portion 3. A pouch container with a spout comprising a bag main body 2 and a spout 7 attached to the upper end portion 3d of the front and back surface portion 3 of the bag main body 2 is shown. Such a pouch container 1 with a spout is a self-supporting pouch in which, after filling, the bottom portion 1a for mounting is formed by folding back the lower portions of the front and back surface portions 3. As shown in FIGS. 2 and 3, the side gusset portion 6 constituting the bag body 2 has the mountain fold portion 4 not overlapping the side end fusion portion 8 and the valley fold portion 5 overlapping the spout fusion portion 9. It is folded so as not to become.

Specifically, as shown in FIG. 4, the bag body 2 is made of a flexible laminated film having four surfaces, that is, a front surface portion 3, a back surface portion 3, and both side surface gusset portions 6 folded in a substantially W shape. The front and back surface portions 3 are formed in a front hexagonal shape in which both lower sides of a rectangular film having a sealant layer as an innermost layer are cut obliquely. The side gusset portion 6 is made of the same film as the front and back surface portions 3, and in the unfolded state, as shown in FIG. 5, the side gusset portion 6 has substantially the same width as the front and back surface portions 3 and the lower side follows the downward inclination of the front and back surface portions 3. Are formed in a substantially W shape. As shown in FIGS. 2 to 4, the side gusset portion 6 is folded outward at the center in the width direction to form a mountain fold portion 4. Further, the mountain fold portion 4 and both side end portions are formed. The valley fold 5 is formed by being folded inward between 6a. The ridge lines of the mountain fold portion 4 and the valley fold portion 5 are straight lines extending in the vertical direction, and both are formed in parallel with the edge 6b of the side end portion 6a. The mountain fold portion 4 is folded so as not to overlap the side end fusion portion 8 of the side face gusset portion 6 (become inside the side end fusion portion 8) during bag making. That is, a predetermined width (for example, about 4 to 10 mm) of both side end portions 6a of the side surface gusset portion 6 is heat-sealed with the side end portions 3a of the front and back surface portions 3 at the time of bag making to form the side end fused portions 8. A mountain fold portion 4 is formed by folding outward so as not to overlap the planned formation portion. On the other hand, the valley fold portion 5 is folded so as not to overlap the spout fusion portion 9 during bag making (outside the side edge 74a of the fusion-bonded portion 74 of the spout 7). The side gusset portion 6 is divided into a first surface portion 61, a second surface portion 62, a third surface portion 63, and a fourth surface portion 64 with the mountain fold portion 4 and the two valley fold portions 5 as boundaries.
Further, a notch portion 11 having a predetermined shape (for example, a semicircular arc shape) is formed at the upper end of the side end portion 6 a of the side gusset portion 6, and the notch portion 11 is similarly formed at the upper end of the mountain fold portion 4. ing. The cutout portion 11 of the side end portion 6a and the cutout portion 11 of the mountain fold portion 4 are formed so that the cutout shapes coincide when the first surface portion 61 to the fourth surface portion 64 are overlapped. Therefore, when the folded side surface gusset portion 6 is sandwiched and overlapped between the front and back surface portions 3, the inner surfaces of the front and back surface portions 3 are exposed to face each other from the portion surrounded by the notch portion 11. In addition, each notch part 11 is the state which folded the side surface gusset part 6 (state which overlap | superposed the 1st surface part 61 thru | or the 4th surface part 64). The four surface portions 64 can be formed by cutting out at a time.
Next, the spout 7 has a spout 72 to which a removable cap 71 is attached, a conduit 73 communicating with the spout 72, and a fused portion 74 that is an attachment portion to the bag body 2.

  And the pouch container 1 with a spout heat-bonds the side edge part 3a and the lower end part 3c of the front and back surface part 3, and the side edge part 6a and the lower end part 6c of the side face gusset part 6 to the upper end part 3d center of the front and back surface part 3. The upper end 3d of the front and back surfaces 3 and the upper end 6d of the side gusset 6 are heat-sealed with the spout 7 interposed therebetween to form a sealed bag. Specifically, the folded side gusset 6 is sandwiched between both sides of the front and back sides 3, and the both side ends 3a of the front and back sides 3 and the inner surfaces of both side ends 6a of the side gusset 6 are heat-sealed. The side end fused portions 8 are formed to seal the front and back surface portions 3 and the side end portions 3 a and 6 a of the side surface gusset portion 6, and the inner surfaces of the lower end portion 3 c of the front and back surface portion 3 and the lower end portion 6 c of the side surface gusset portion 6 are formed. The lower end fusion part 13 which seals a lower end is formed by heat-sealing. Further, by sandwiching the fusion-bonded portion 74 of the spout 7 in the center of the upper end portion 3d of the front and back surface portion 3, and thermally fusing along the upper end portion 3d of the front and back surface portion 3, the peripheral surface of the fusion-bonded portion 74 and A spout fusion part 9 in which the inner surfaces of the front and back surface parts 3 are heat-sealed is formed, and on both sides of the spout fusion part 9, the upper end part 3 d of the surface part 3 and the first surface part of the side face gusset part 6. 61, the upper surface of the second surface 62 and the upper surface of the third surface 63, and the inner surfaces of the upper surface of the fourth surface 64 and the upper surface 3d of the back surface 3 are heat-sealed. An upper end fused portion 14 is formed. Furthermore, the inner surface exposed portions 3e of the front and back surface portions 3 exposed through the notches 11 are heat-sealed to the upper ends of the side end portions 3a of the front and back surface portions 3, so that both sides of the upper end of the bag body 2 do not expand. So that it is partially fastened.

Here, the laminated films constituting the front and back surface portions 3 and the side surface gusset portions 6 are, for example, a sealant layer for heat-sealing in order from the inside to the outside, the strength of the bag (flexibility, pinhole resistance, etc.) ) Of a four-layer structure in which a base material layer for holding a gas, a barrier layer for imparting gas barrier properties and light shielding properties, and an outer surface layer for imparting surface friction and heat resistance are laminated by dry lamination or the like. The thing can be illustrated. The sealant layer is not particularly limited as long as it is a heat-sealable material, and for example, polyethylene such as high-density polyethylene and linear low-density polyethylene, polypropylene, and an ethylene-vinyl acetate copolymer can be used. Of these, it is preferable to use a linear low-density polyethylene film having excellent heat-fusibility. The base material layer is not particularly limited as long as it is relatively excellent in strength. Synthesis of a polyamide film such as nylon, a polyester film such as polyethylene terephthalate, and a polypropylene film such as polypropylene and propylene-ethylene copolymer. Resin films, synthetic paper, two or more types of laminates, and the like can be used. Of these, it is preferable to use polyamide-based films such as 6 nylon and 6, 6 nylon, which are excellent in bending resistance. The barrier layer is not particularly limited as long as it has gas barrier properties, and is a metal foil such as aluminum, a silica vapor deposited film, a synthetic resin film having gas barrier properties such as polyvinylidene chloride and ethylene-vinyl alcohol copolymer, 2 A laminate of more than seeds can be used. Among these, it is preferable to use a metal vapor deposition film such as aluminum or aluminum oxide or a silica vapor deposition film. As the outer surface layer, for example, a polyester film such as polyethylene terephthalate, a polyamide film such as polypropylene or nylon, two or more laminates, and the like can be used. In the case of a synthetic resin film, a stretched film is used. Is preferred. Of these, it is preferable to use a polyester film such as polyethylene terephthalate which is excellent in heat resistance, dimensional stability and the like at the time of heat fusion. In addition, the design printing in which the display of a brand name, a pattern, etc. was printed on the inner surface or the outer surface of the outer surface layer, and when applying this design printing to the inner surface, a transparent outer layer is used. .
The spout 7 can be formed of various synthetic resins, metals such as aluminum, etc., but can be easily attached to the bag body 2, so that at least the peripheral surface of the fused portion 74 is the front and back surface portion 3. A material that can be heat-sealed to the inner surface is preferable. For example, it can be formed of a synthetic resin molded product such as polyethylene or polypropylene, and can be favorably heat-sealed. preferable.

  The pouch container 1 with a spout can be mechanically manufactured by the following manufacturing process, for example. That is, the side film original fabric sheet in which the side gusset parts 6 are continuously connected is folded so as to form the valley fold part 5 and the mountain fold part 4, and the side film original in the folded state is formed using a punching device (punch). A hole (notch portion 11) is formed at a predetermined position on the side portion of the anti-sheet. Next, the side film original sheet is sandwiched between the front film original sheet and the back film original sheet in which the front surface parts 5 are continuously connected, while forming the side edge fusion part 8. It heats with the vertical seal device from the outer surface side of the back film original fabric sheet. Thereby, only the both ends of a front and back film original fabric sheet and the both ends of a side film original fabric sheet are heat-seal | fused. Next, in order to form the lower end fused portion 13, when heated in the width direction from the outer surface side of the front and back film raw sheet with a horizontal sealing device, the bag continuous body in which the upper opening type bag body 2 is continuously connected. Can be obtained. Subsequently, the bag continuum is cut to produce an upper-opening bag body 2 and a spout 7 can be attached. However, the bag continuum is wound into a roll and then filled with the bag continuum roll. Attach to the spout mounting device installed in the line. Then, the bag continuum is drawn out from the bag continuum roll, and is cut to obtain an upper opening type bag body 2. The front and back surface portions 3 and 3 are sucked by vacuum to open the upper end portion 3d. 7 and the upper end portion 3d is heated in the width direction from the outer surface side of the front and back surface portions 3 by a horizontal sealing device, thereby the spout fusion portion 9, the upper end fusion portion 14 and the inner surface exposed portion 3e fusion portion. Is formed, and a sealed pouch container 1 with a spout can be manufactured.

The pouch container 1 with the spout is used by filling the filling material through the spout 72 of the spout 7 and screwing the cap 71 together.
According to the pouch container 1 with a spout, the side gusset portion 6 is folded so that the mountain fold portion 4 does not overlap the side end fusion portion 8. When the side end portions 3a and 6a are heat-sealed, it is possible to prevent a part of the mountain folded portion 4 from being heat-sealed. Further, since the side gusset portion 6 is folded so that the valley fold portion 5 does not overlap the spout fusion portion 9, when the front and rear surface portion 3 and the upper end portions 3 d and 6 d of the side gusset portion 6 are heat-sealed. In addition, it is possible to prevent a part of the valley folded portion 5 from being thermally fused between the spout 7 and the front and back surface portions 3. Therefore, when the filling is filled, the side gusset portion 6 can be fully opened.
Moreover, since the mountain fold part 4 and the valley fold part 5 are formed, the comparatively wide side face gusset part 6 can be used. Therefore, since the bag main body 2 having a large area can be formed on the side surface, a large amount of filling can be filled in the pouch container 1 with a spout. Moreover, since the bottom face 1a formed by folding the lower part of the front and back surface part 3 can also have a wide area, the self-standing stability of the pouch container 1 can be enhanced.

The present invention is not limited to the above-described embodiments, and can be modified, substituted, replaced, added, and the like. Hereinafter, parts different from those of the above embodiments will be mainly described, and the same configuration may be referred to using terms and figure numbers, and the description thereof may be omitted.
In the above embodiment, the side gusset portion 6 includes two valley fold portions 5 and one mountain fold portion 4, but the ridges may be further increased. For example, as shown in FIG. 6A, three valley folds 5 and two mountain folds 4 may be formed, or more mountain folds 4 and valley folds 5 may be formed. . The side gusset part 6 should just be folded so that the at least 2 valley fold part 5 and the one mountain fold part 4 may be formed. However, if too many ridges are formed, the thickness of the upper end fusion portion 14 at the upper end portion 6d of the side gusset portion 6 becomes thick, so that the two valley fold portions 5 and the one mountain fold portion 4 as described above. It is the most preferred embodiment to form
Moreover, as shown in FIG.6 (b), each valley fold part 5 may differ in the degree of folding (it is the same also when multiple mountain fold parts 4 are formed). However, since the wider side gusset portion 6 can be used, the mountain fold portion 4 and the valley fold portion 5 are folded into the immediate vicinity of the side end fusion portion 8 and the spout fusion portion 9. preferable.

  Further, the side gusset portion 6 is formed so that the width thereof is substantially the same as that of the front and back surface portions 3 (in the unfolded state), but the side gusset portion 6 may be wider than the front and back surface portions 3 It may be narrow. Furthermore, although the notch part 11 is also formed at the upper end of the mountain fold part 4, it may be formed only at the upper end of the side end part 6 a of the side face gusset part 6. In addition, if the side gusset portion 6 is partially cut away so that the inner surfaces of the side end portions 3a of the front and back surface portions 3 are exposed to face each other, the bag body 2 can be prevented from opening on both sides, which is preferable in terms of appearance. However, even if both sides of the bag body 2 are opened, the sealing performance of the bag body 2 is not impaired.

Furthermore, in the said embodiment, although the front and back surface part 3 and the side gusset part 6 consist of four separate film pieces, respectively, as shown in FIG.6 (c), for example, one film piece The front and back surface portions 3 and the side gusset portions 6 may be formed by appropriately folding, and although not particularly illustrated, the front and back surface portions 3 and the side gusset portions 6 are formed by appropriately folding two film pieces. May be.
Moreover, although the bag main body 2 illustrated the self-supporting type | mold with the both sides | surfaces gusset part which consists of 4 surfaces of the front-and-back surface part 3 and the both-sides gusset part 6, for example, the piece which consists of 3 surfaces of the front-and-back surface part 3 and one side gusset part The present invention may be applied to the bag body 2 of various forms as long as it has one or more side gusset portions 6 in which a mountain fold portion 4 and a valley fold portion 5 are formed. Can do. Further, the front and back surface portions 3 are not limited to those formed in a front hexagonal shape, and may be formed in a front rectangular shape or a front octagonal shape.

Moreover, the laminated film which comprises the front and back surface part 3 and the side surface gusset part 6 is not necessarily restricted to said layer structure, For example, when a base material layer or an outer surface layer is a raw material which has gas barrier property, a barrier layer is separately provided. Similarly, if the outer surface layer or the barrier layer is a relatively strong material, for example, the base material layer may not be provided separately. In addition, for example, when filling a filling that does not require gas barrier properties (for example, frozen food), the barrier layer may not be provided. Further, a layer different from the above-exemplified layers may be added, or a layer having a different function (for example, a nonwoven fabric layer, a foamed resin layer, etc.) may be added. Can be changed as appropriate.
In addition, the spout 8 is not necessarily limited to the above-mentioned form, and various known ones such as those having no conduit 73 and those provided with a rod-like body having a cross-sectional shape instead of the conduit 73 are used. be able to.

In addition, the pouch container 1 with a spout of the present invention includes various foods such as beverages, jelly-like foods, ice cream, fluid foods such as porridges, medical-related products such as nutrients and chemicals, and chemical products such as detergents. Things can be filled. In addition, for example, when filling an enteral nutrient or the like as a filling, it is necessary to add hot water or the like into the bag body 2 at the time of use, so the pouch container 1 with spout as described below is preferable.
That is, in this preferred pouch container 1, as shown in FIG. 7, a hole 15 for inserting a hanging hook is provided in the center of the lower end fusion portion 13, and a part of the lower end fusion portion 13 is provided. A notch line 17 having a substantially V-shaped cross section extends from the cut line 16 to the side end fused part 8 through the non-fused part of the front and back surface parts 3 and the side face gusset part 6. Is formed on the outer surface of the front and back surface portion 3.
As shown in FIG. 8, such a pouch container with a spout is hung on a suspension hook (not shown) through a perforation hole 15 with the top and bottom being reversed, and the administration tube 18 is connected to the spout of the spout 7. Then, the bag body 2 is cut along the notch line 17 with the cut 16 as an opening start point, and a part of the bag body 2 is opened, and the upper end portion of the mountain fold portion 4 is grasped and pulled out, or both sides of the mountain fold portion 4 (second surface portion) The injection port 19 can be greatly opened by inserting a finger between 62 and the third surface portion 63). Hot water or the like can be poured from the injection port 19 and enteral nutrient can be administered through the tube 18. By forming the cut line 16 and the notch line 17 in this way, at the time of use, a part of the bag body 2 can be easily opened, and since the mountain fold part 4 folded outward is formed, The injection port 19 can be opened easily by grasping or applying a finger.

The perspective view which shows the pouch container with a spout of the state filled with the filler. Each fusion part is shown by shading, and a partial fusion part at the upper end of the front and back parts is shown by light ink painting (the same applies to FIG. 2). The front view of a pouch container with a spout. 2A is an end view taken along line AA in FIG. 2, FIG. 2B is an end view taken along line BB, and FIG. 3C is an end view taken along line CC. In addition, the thickness of the film is enlarged and each fusion part is represented by a thick line. (A) is a disassembled perspective view of the pouch container with a spout, (b) is the exploded top view. A part of the spout conduit is omitted. The expansion | deployment front view of a side gusset part. (A)-(c) is an exploded top view of the bag main body which concerns on a modification. (A) is a front view of the pouch container with a spout which concerns on a modification, (b) is a DD line end view. The partial omission front view which shows the usage example of the pouch container of FIG. The partial omission reference perspective view which shows the manufacturing process of a bag main body.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Pouch container with a spout, 1a ... Bottom surface, 2 ... Bag main body, 21 ... Storage part, 3 ... Surface part, back surface part, 3a ... Side edge part of front / back surface part, 3c ... Lower end part of front / back surface part, 3d ... Front / back surface part 4 ... mountain folds, 5 ... valley folds, 6 ... side gussets, 6a ... side ends of side gussets, 6c ... lower ends of side gussets, 6d ... upper ends of side gussets, 7 ... spout, 71 ... cap, 72 ... spout, 73 ... conduit, 74 ... fused portion, 8 ... side end fused portion, 9 ... spout fused portion, 11 ... notched portion, 13 ... lower end fused portion, 14 ... upper end fusion part

Claims (1)

A spout having a front and back surface portion and a side gusset portion made of a film having a sealant layer on the inner surface, the side edge portion of the side surface gusset portion being heat-sealed to the front and back surface portions, and the spout being heat-sealed to the upper end portion of the front and back surface portions. A pouch container with
The side gusset portion is formed with a valley fold portion folded inward and a mountain fold portion folded outward, and the valley fold portion does not overlap with the spout fusion portion, and the mountain fold portion A pouch container with a spout, wherein the pouch container is folded so as not to overlap a fused portion at a side end portion of a side gusset portion.

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