JP2002128092A - Self-standing bag - Google Patents

Abstract

PROBLEM TO BE SOLVED: To productively provide a self-standing bag which is used to seal and pack contents having flowability such as liquid properties, and made excellent in economical efficiency, appearance and fitness for a use, especially, such as the transfer of the contents to another container. SOLUTION: The bottom part of the self-standing bag 100 is formed in such a gusset form 5 that a bottom surface film is folded back inside for insertion between the lower parts of front and rear wall surface films 1 and 1', and a gusset part 5 is formed in such a manner as to be heat-sealed with a ship bottom-shaped bottom seal part 2. A body part is constituted in such a manner that edge parts on both sides of the films 1 and 1' are heat-sealed with side seal parts 6 and 6, which are narrowed with a slant from both sides near an intermediate part in the lengthwise direction of the bag 100 and kept narrower in width therefrom to an upper part, and that the outside of a section made narrower in the width is notched in notching parts 7 and 7 except a heat seal part having a prescribed width. The upper part is sealed with an upper seal part 8 after the infilling of the contents. Preferably, a perforated line 9 is provided on the lower side of the seal part 8, and an opening means such as a notch 10 is provided at the end of the seal part 8.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a self-standing bag used for hermetically packaging a liquid material, as well as powdery, granular and other fluid contents, and more particularly to a shape-retaining bag such as a bottle. It can be suitably used as a substitute container for containers, or as a refill container for refilling the contents of a shape-retaining container, in addition to the preservability of the contents, suitability for use such as transfer to another container, economical The present invention relates to a self-standing bag having excellent properties, good appearance, and excellent disposal property after use.

[0002]

2. Description of the Related Art Conventionally, in addition to various liquid detergents, cleansers, softeners, emulsion pastes, etc., various beverages, liquid seasonings such as soy sauce, sauces, mentsuyu, etc., liquid substances, powders such as milk powder, cocoa, etc. Was mainly filled in containers having shape retention, such as plastic bottles, glass bottles, and metal cans, distributed and used, and used containers were discarded. On the other hand, there is also a problem of waste disposal, and these containers are being sorted, collected, and recycled after use. However, such shape-retaining containers have a strong tendency to consume resources, and the ratio of container cost to commodities cannot be ignored.

[0003] From such a viewpoint, there has been a demand for a lower-priced, simpler container such as a bag made of a soft packaging material such as a laminate film. Such a simple container can be used as a substitute for a shape-retaining container such as the plastic bottle, the glass bottle, and the metal can, and also as a refill container used to refill a container such as a used bottle with the same contents. Can also be used. As such a simple type container, for example, a container using a self-standing bag called a standing pouch as it is, or a container provided with a narrow spout at the top of the standing pouch, and further, a spout of the spout In order to make the opening property and the shape retention property more stable, there is a type in which a spout made of a plastic molded body is attached to the upper part of the standing pouch.

[0004] Such bags consume less material,
It is lightweight and can pack contents compactly, which saves resources and reduces logistics costs.It also has advantages such as easy disposal after use, especially above the standing pouch. The one provided with a spout made of a plastic molded body is easy to handle, and is excellent not only in performance but also in suitability for use.

[0005] However, in the case where a spout made of a plastic molded body is attached to the upper part of the above-mentioned standing pouch, it is necessary to prepare a spout separately. Since it is necessary to perform the process from a small spout, a dedicated filling device is also required, and there have been problems such as a decrease in productivity at the time of filling and an extra facility cost. In this regard, the one with the narrower spout at the top of the standing pouch can be formed by heat sealing, which enables the bag to be manufactured with good productivity at low cost. There are many advantages such as the use of a filling and sealing machine for standing pouches.

[0006]

However, even with the above-described standing pouch provided with a narrow spout at the top, the bag filled with the contents can be removed together with the bottom in the height direction of the bag. The lower part from the middle part is narrowed in the width direction because it spreads cylindrically back and forth, and the upper part remains the same width because it does not spread back and forth. As a result, the width of the upper part is wide and the width from the middle part to the lower part is lower. The appearance of narrowing was like a squat shoulder, not a smart shape. Also, when transferring the contents filled in the bag to another container, the spout is formed with a narrow width, so it is safe to not spill the contents outside, but it is safe. There is a problem that the opening is difficult to open, and the spout is likely to be clogged in the middle of the pouring. Particularly, when the capacity of the bag is large such as 1 L to 1.5 L, when the contents are poured out, it is difficult to hold and transfer. There was a problem that the replacement operation itself became troublesome.

[0007] The present invention has been made to solve the above problems, and the object thereof is to provide:
It is a laminated film bag that seals and packs fluid contents such as liquids, with good productivity, excellent preservation of contents, light weight and not bulky, easy disposal treatment after use,
In addition, the contents can be easily filled, the bag after filling the contents is self-supporting, the appearance is also smart similar to a shape-retaining container such as a bottle, and the display effect at the store is excellent. Easy to hold the contents when transferring the contents to another container, the liquid passage through which the contents are poured out is reliably formed, and the pouring port is safe and easy to the end without clogging during the pouring. It is an object of the present invention to provide a self-contained bag capable of transferring the contents to a self-standing bag.

[0008]

The above objects can be attained by the present invention described below. That is, in the invention described in claim 1, the lower part of the bag is inserted between the lower part of the front and rear two wall films by folding the bottom film inward,
A bag formed in a form having a gusset portion in which a peripheral portion is sealed by heat sealing, and a body portion formed by heat sealing both side edges of the front and rear two wall films with side sealing portions. In, the lower gusset portion is heat-sealed with a seal pattern having a shape that imparts self-sustainability, and the width of both sides of the bag is reduced to a shape narrowed from both sides near the middle portion in the length direction of the bag. It is heat-sealed with a seal pattern that is narrowed and has a narrow width from there to the upper portion, and the outside of the heat-sealed portion of the narrowed portion is cut out leaving a heat-sealed portion of a predetermined width. Consisting of a self-standing bag.

The seal pattern having a shape that imparts independence to heat seal the lower gusset portion may be any seal pattern as long as the inside has a concave shape recessed from both sides toward the center. Is a seal pattern that has a shape depressed in a curved line from both sides toward the center,
Alternatively, a so-called ship bottom-shaped seal pattern, such as a seal pattern in which the inside rises linearly from the bottom with a predetermined width to the outside on both sides, is preferable.

[0010] By adopting such a configuration, the self-standing bag of the present invention can consume less material, is lighter and less bulky than a shape-retaining container such as a plastic bottle.
Disposal after use also becomes easier. Then, the contents can be easily filled from the upper opening and heat sealed. In addition, the bag filled with the contents is greatly expanded back and forth by the lower gusset part and its sealing pattern, and the legs of the heat seal part are formed on the outer periphery of the bottom, so that it has excellent self-sustainability. Is easy to handle, and the bag expands cylindrically from near the middle of the bag, so it can be compactly packed for its capacity, reducing logistics costs and display space at stores. Become.

A seal pattern in which both sides of the bag are narrowed to a shape narrowed from both sides in the vicinity of an intermediate portion in the length direction (height direction) of the bag and inclined from both sides, and has a narrow width from there to the upper portion. Since the outside of the heat-sealed portion of the narrowed portion is cut out leaving a heat-sealed portion of a predetermined width, the shape of the bag after filling the contents is the middle portion. The lower part is cylindrical from the vicinity and the width of the upper part is narrow, it does not have the shape of a shoulder like a conventional standing pouch, it is smart like a shape-retaining container such as a bottle, The display effect is also excellent.

When transferring the contents to another container, the upper heat seal portion is cut off and opened, the upper and lower portions of the bag are manually supported from below, and the narrow upper portion is supported on both sides. The upper part can be easily opened by pushing lightly toward the center of the container, and by tilting the bag with the opening toward the mouth of the container in this state, the contents flow into the opening, A liquid passage is reliably formed in the upper part of the bag by the internal pressure. Therefore, the contents flow smoothly to the opening, the shape of the liquid passage is good, the opening does not close during the pouring, and the bag has a relatively large capacity. It is easy to hold, and the contents can be safely and easily transferred to the end.

[0013] According to the invention described in claim 2, the upper opening of the self-standing bag is heat-sealed with an upper seal portion having a predetermined width, and the self-standing bag is opened below the upper seal portion. The self-standing bag according to claim 1, further comprising an opening means.

As the above-mentioned opening means, for example, in addition to means for providing an opening instruction line by printing or the like and cutting off that part with scissors or the like, (a) a notch is provided in the heat seal portion on the outer periphery of the bag, Means for tearing the notch as the opening start position, (b) a laminated film such that an easily tearable film, such as a uniaxially stretched film, can easily be opened in a certain direction so that the stretching direction and the tearing direction at the time of opening match. (C) means for tearing along a half-cut line formed by laser light irradiation processing,
There is an easy-opening means such as a means that forms a group of elongated and small scars at the end of the bag by a mechanical method, and easily tears from the group of scars, and selects each of these opening means, or They can be employed in appropriate combinations.

[0015] Incidentally, as the above-mentioned notch, a one-shaped or V-shaped notch is often used, but the shape thereof is not limited.
Any shape having a pointed portion in the tearing direction may be used. The half cut line is not limited to a continuous linear half cut line, but may be a perforated intermittent half cut line. Such a half-cut line may be one, but assuming that the tearing direction is shifted, a plurality of half-cut lines such as one each or two each on both sides of the center half-cut line, Alternatively, it may be provided in a shape converging with the center half-cut line.

As the opening means, various means as described above can be employed, but it is preferable to provide an opening instruction line at least at the opening position. The opening instruction line may be displayed in any form, such as a dotted line, a broken line, and a solid line, as well as characters and symbols, and can be easily provided by printing or the like.

By adopting such a configuration, in addition to the operation and effect of the invention described in the first aspect, since the opening position of the bag can be clearly specified, there is no error, and in combination with the opening instruction line, By using an easy-opening means such as a notch, a half-cut line, and lamination of a uniaxially stretched film, it becomes possible to tear open easily by hand without using tools such as scissors.

According to a third aspect of the present invention, there is provided the self-standing bag according to the second aspect, wherein a zipper-type fastener is provided below the opening means.

The zipper-type fastener comprises a tape body having a convex ridge and a tape body having a concave ridge which can be fitted to each other. The opening and closing of the opening of the bag can be performed easily and repeatedly by fitting or disengaging the ridges and the ridges by heat-adhering and attaching the tapes. is there.

By adopting such a configuration, in addition to the operation and effect of the invention described in the second aspect, even when the contents filled in the bag are used a plurality of times, the upper seal portion can be used. After opening the bag by opening it and opening part of the contents, the opening can be easily closed again, and the contents remaining in the bag should be safely stored until the next use. Can be. Such a configuration is particularly effective when the capacity of the bag is large.

According to a fourth aspect of the present invention, the upper opening of the self-standing bag has a seal pattern having a non-sealing recess for forming a narrower spout inside the upper central portion. The self-standing bag according to claim 1, wherein the self-standing bag is heat-sealed and an opening means for opening the self-standing bag is provided so as to cross the recess.

By adopting such a configuration, in addition to the operation and effect of the invention described in claim 1, the viscosity of the contents to be filled in the bag and the size of the mouth of the container to be transferred are changed. By simply adjusting the width of the recessed portion of the seal pattern for heat-sealing the upper part of the bag, a spout having a more suitable width can be formed, so that the contents can be transferred more safely and easily. .

According to a fifth aspect of the present invention, at least an upper region of the self-standing bag is embossed to improve the opening property of the bag. 4. The self-standing bag according to any one of 4.

Such embossing may be a linear pattern such as a pressing rule, or a pattern having an appropriate width, length and bulging height. Also,
Such embossing may be provided on only one of the wall films on both sides, but is more preferably provided on the films on both sides. When it is provided in a linear pattern, it is preferable to provide a plurality of patterns in order to further improve the opening property and the shape retention of the opened liquid passage.

By adopting such a structure, in addition to the functions and effects of the invention described in any one of claims 1 to 4, the upper part of the bag can be more easily opened and formed. The shape retention of the liquid passage can be further improved.

[0026]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, an embodiment of the present invention, such as a film used for a self-standing bag of the present invention and a method for manufacturing the self-standing bag, will be described. First, the film used for the self-standing bag of the present invention is mainly a laminated film mainly composed of plastics, but is not particularly limited, and a known laminated film used for a packaging bag for contents such as a liquid. Any material can be used, and a suitable material can be freely selected and used according to the use conditions, such as the type of contents to be filled and the presence or absence of heat treatment after filling. As a representative example of the configuration of the laminated film used for the self-standing bag of the present invention, the following configuration is exemplified.

(1) ON film / adhesive / L·LDPE
Film (sealant layer) (2) ON film / adhesive / uniaxially or biaxially oriented H
DPE film / adhesive / L / LDPE film (sealant layer) (3) ON film / adhesive / uniaxially or biaxially oriented P
P film / adhesive / L / LDPE film (sealant layer) (4) ON film / adhesive / uniaxially or biaxially oriented P
P film / adhesive / aluminum foil / adhesive / LL
DPE film (sealant layer) (5) ON film (silica or alumina vapor deposited layer) / adhesive / uniaxially or biaxially stretched HDPE film / adhesive / L / LDPE film (sealant layer) (6) ON film / adhesive / (Silica or alumina vapor deposited layer) PET film / adhesive / L / LDPE film (sealant layer) (7) ON film / anchor coat layer / co-extrusion coat layer (HDPE layer / L / LDPE layer) (8) ON film / anchor coat layer / co-extrusion coat layer (HDPE layer / LDPE layer) / adhesive / L·LDP
E film (sealant layer) (9) PET film / adhesive / aluminum foil / adhesive / ON film / adhesive / L / LDPE film (sealant layer) (10) PET film / adhesive / aluminum foil / adhesive / ON film / adhesive / CPP film (sealant layer) (11) PET film / adhesive / ON film / adhesive /
Aluminum foil / adhesive / L / LDPE film (sealant layer) (12) PET film / adhesive / ON film / adhesive /
Aluminum foil / adhesive / CPP film (sealant layer) (13) PET film / adhesive / EVOH film / adhesive / ON film / adhesive / CPP film (sealant layer) Instead, various combinations of laminated films can be used.

In the above structure, the ON film is a biaxially stretched nylon film, the PET film is a biaxially stretched polyethylene terephthalate film, PP is polypropylene, L·LDPE is linear low density polyethylene, HDP
E is high density polyethylene, LDPE is low density polyethylene, CPP film is unstretched polypropylene film,
The EVOH film refers to a saponified ethylene-vinyl acetate copolymer film.

The adhesive between the film layers is usually used for lamination by a dry lamination method.
An adhesive for dry lamination such as a liquid-curable polyurethane-based adhesive can be used. In addition, the anchor coat is a kind of primer coat that is previously coated on the base film side in order to improve adhesiveness when laminating a resin by extrusion coating.

In the structure of the laminated film, when the ON film and the PET film are used for the outermost layer, they are used as a base film for providing the bag with mechanical strength, heat resistance, printability, etc. If you use
It is mainly used to reinforce mechanical strength. When a uniaxially stretched HDPE film or a uniaxially stretched PP film is used for the intermediate layer, the film is laminated so that the stretching direction coincides with the tearing direction at the time of opening the bag, thereby facilitating the tearing and the direction. Properties can be stabilized. When a biaxially oriented HDPE film or a biaxially oriented PP film is used for the intermediate layer, it is possible to increase the thickness of the laminated film, increase its rigidity and mechanical strength, and at the same time, decrease the water vapor permeability. it can.

An aluminum foil, a silica or alumina vapor-deposited layer, an EVOH film, etc. are laminated mainly to impart gas barrier properties. In addition to these, a metal vapor-deposited layer of aluminum or the like, polyvinylidene chloride A coating layer or a gas barrier material such as a polyacrylonitrile film may be laminated.

As the innermost sealant layer, L·LD
Although two examples of PE film and CPP film are given, L / LDPE film is excellent in heat sealing stability and content resistance, such as stress cracking resistance to surfactants, and CPP film is heat resistant. It has excellent low odor properties and is suitable for packaging of contents requiring these properties.

In the sealant layer, in addition to the above, an ethylene / α-olefin copolymer, ethylene / vinyl acetate copolymer, ethylene / acrylic acid copolymer, ethylene / acrylic acid ester Polymers, ionomers, polyester resins and the like can also be appropriately selected and used.

In particular, the ethylene / α-olefin copolymer obtained by polymerization using a single-site catalyst such as a metallocene catalyst has a narrow molecular weight distribution and a stable copolymerization ratio, so that the low-temperature heat sealability and The sealant layer of a bag having excellent hot sealing properties and having a step due to a difference in film overlap in the heat seal portion, such as between the lower gusset portion and the body seal portion, such as the self-standing bag of the present invention. In
It is suitable in that the generation of pinholes due to the loss of the seal can be prevented. Further, by using the copolymer blended with an olefin-based elastomer, the heat fluidity of the sealant layer is improved, and the occurrence of pinholes due to the step or the like can be more effectively prevented.

The contents to be filled in the self-standing bag of the present invention are not limited to liquids, but may be foods, non-foods, etc., as long as they have fluidity such as powder and granules. When a content that is easily oxidized is filled, for example, an ultraviolet absorber can be kneaded into any one or a plurality of layers of the laminated film. Further, an ultraviolet absorbing agent may be mixed with a resin, and the ultraviolet absorbing layer may be provided by a coating method. One or two or more compounds selected from the following can be used as the ultraviolet absorber. In organic systems, benzophenone-based, benzoarizole-based, salicylic acid-based, organic nickel-based, acrylonitrile-based, monobenzoic acid-based, oxalic anilide-based, cyanoacrylate-based, and triazo-based ultraviolet absorbers. , Zinc, cerium and the like can be used.

Next, a method of manufacturing the self-standing bag of the present invention, which is manufactured using the above-described laminated film, will be described.
The self-standing bag of the present invention basically uses a conventional bag making machine for a standing pouch (either a single-row bag making machine or a two-row butt bag making machine), and a side portion thereof. It can be easily manufactured by changing the seal pattern of the seal portion and appropriately adding a processing device as described below. That is, a trimming device that cuts off a part of the outer side of the side seal portion is added, and, if necessary, a punching device for providing easy-opening means such as a notch or a half-cut line, a laser beam irradiation device, Furthermore, a zipper-type fastener attaching device, an embossing device for embossing an upper portion of a bag, and the like are added, and the bag can be easily manufactured by processing each.

[0037]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described more specifically below with reference to the drawings. However, unless the present invention exceeds the gist,
It is not limited to the following drawings. Further, the same reference numerals are used for the parts having the same names in different drawings.

FIG. 1 is a front view showing the structure of a first embodiment of the self-standing bag of the present invention. Self-standing bag 100 shown in FIG.
The bottom film is folded inward between the lower portions of the front and rear wall films 1 and 1 ', and the bottom film cutouts 4 and 4 are provided near the lower ends of both side edges.
And a gusset part 5 formed by inserting up to the bottom film folding part 3.
Is formed by heat-sealing with a bottom seal portion 2 in which the inside has a shape depressed in a curved line from both sides toward a center portion, that is, a bottom portion, and a body portion has two front and rear wall films. 1, a seal pattern having a shape in which the edge portions on both sides of the bag are narrowed to a shape narrowed from both sides in the vicinity of the middle portion in the length direction of the bag with a slant, and become vertical from there to the upper portion; That is, the heat seal is performed by the side seal portions 6 and 6, and the outside of the heat seal portion having the reduced width is cut out by the cutout portions 7 and 7 except the heat seal portion having a predetermined width. Is formed. The upper seal portion 8 at the top of the bag is heat-sealed after the contents are filled, and the cutout line 9 on the lower side and the notches 10 and 10 on both ends of the bag are previously set at their expected positions. Is provided.

The notch may be provided only at one end of the cut line 9. Although not shown in the figure, a half-cut line by laser light irradiation may be provided along the cut line 9 along the cut line 9. Also,
The shape of the side seal portions 6 on both sides of the self-standing bag 100 is also shown as a shape that is narrowed from both sides near the middle portion in the length direction of the bag with inclination from both sides, and then becomes vertical from there to the upper portion. However, after constriction with inclination from both sides, it is not always necessary to be vertical, unless both sides are widened again, the shape is parallel on both sides, or both sides are inclined inward from there to the top, and further upward The shape may become narrower toward.

By adopting such a configuration, the self-standing bag 100 is lightweight, not bulky, has good preservability of contents, and can be disposed of after use since the entire bag is formed of a laminated film. Easy. The contents can be easily filled from the upper opening, that is, the unsealed upper seal portion 8, and can be sealed by heat sealing.

In the self-standing bag 100 filled with the contents, the lower gusset portion 5 is heat-sealed with the bottom seal portion 2 in the form of a ship bottom having a curved line on the inside, so that the bag is in the middle in the longitudinal direction of the bag. From the vicinity of the bottom part, the lower side widens in a tubular shape, and the outer periphery of the bottom is formed with a ring-shaped leg formed by a heat seal part joined on both sides by the bottom film cutouts 4, 4, so that excellent independence is achieved. Is given, easy to handle,
In addition, since it is compactly packed for its capacity, it is possible to reduce distribution costs and display space at stores.

In addition, with respect to the overall shape of the self-standing bag 100, both sides of the bag are narrowed to a shape narrowed from both sides in the vicinity of an intermediate portion in the length direction (height direction) of the bag. Heat sealing is performed at the side sealing portions 6, 6 extending vertically from there to the upper portion, and the outside of the heat sealing portion having a reduced width is cut out leaving a heat sealing portion having a predetermined width. Therefore, the lower part from the vicinity of the middle part becomes cylindrical, and the width of the upper part is narrow, it does not become a shape like a shoulder like a conventional standing pouch, it is smart like a shape retention container such as a bottle Yes, it has an excellent display effect at stores.

When the contents are transferred to another container, the upper seal portion 8 is cut off along the cut line 9 by using one of the notches 10 and opened. The upper and lower parts can be supported from below by hand, and the heat seal parts on both sides of the narrow upper part can be easily opened by pressing lightly from both sides toward the center. By tilting the self-standing bag 100 with the opening directed toward the mouth of the container, the contents flow into the opening, and a liquid passage is reliably formed above the self-standing bag 100 by the internal pressure. Therefore, the contents flow smoothly to the opening, the shape of the liquid passage is good, the opening does not close during the pouring, and the bag has a relatively large capacity. Even so, since the upper portion is formed to be narrow, it is easy to hold, and the contents can be safely and easily transferred to the end.

FIG. 2 is a front view showing the structure of a second embodiment of the self-standing bag of the present invention. Self-standing bag 200 shown in FIG.
In the structure of the self-standing bag 100 shown in FIG. 1, the opening means provided below the upper seal portion 8 of the bag, that is, the zipper type fastener is further provided below the cutout line 9 and the notches 10, 10. 11 is additionally provided, and all other components are formed and configured in the same manner as the self-standing bag 100 shown in FIG.

By adopting such a configuration, in addition to the function and effect described for the self-standing bag 100 shown in FIG.
Once the upper part of the self-supporting bag 200 is opened by the opening means, and even after a part of the contents is poured out, the opening can be repeatedly and easily reclosed. Can be safely stored until use. Therefore, the bag can be used particularly conveniently when the capacity of the bag is relatively large and the contents are divided and used a plurality of times.

FIG. 3 is a front view showing the configuration of the third embodiment of the self-standing bag of the present invention. Self-standing bag 300 shown in FIG.
In the configuration of the self-standing bag 100 shown in FIG. 1, the seal pattern of the upper seal portion 8 for sealing the upper opening is changed to a seal pattern having a non-sealed recess 12 at the inner central portion. At the same time, the opening means for opening the bag, in this case, the position of the perforated line 9 and the notches 10 and 10 provided at both ends thereof are set at positions where the cutout can be cut across the non-sealed recess 12 of the upper seal portion 8. When the self-standing bag 300 is opened by the opening means,
A configuration in which three embossed portions 13 in a ruled shape are provided below the non-sealed dent portion 12 serving as a spouting portion, from the bottom of the non-sealed dent portion 12 downward, on both sides and the central portion. It is. Except for the above changes, the configuration is the same as that of the self-standing bag 100 shown in FIG.

The non-seal recess 12 provided at the central portion inside the upper seal portion 8 is provided in accordance with the viscosity of the contents filled in the bag and the size of the mouth of the container for transferring the contents.
It can be provided in an appropriate width. The embossed portion 13 may be provided on only one of the wall films on both sides, but is more preferably provided on the films on both sides.

By adopting such a configuration, when transferring the contents filled in the self-standing bag 300 to another container,
By cutting and opening the upper seal portion 8 along the cut line 9 by using one of the notches 10, a spout portion having a suitable width by the non-sealed recess 12 can be formed, and at the same time, the spout portion can be formed thereunder. Since the embossed portion 13 is provided downward from the side, the wall films 1, 1 'before and after this portion do not adhere to each other, so that the spout opening portion is more easily opened, and the opened spout is formed. Since the shape of the outlet is also improved, a more stable liquid passage is formed, and the outlet is not blocked during the pouring, and the contents can be more safely and easily transferred to the end with a stable flow. Can be replaced. Except for the above changes, the self-standing bag 100 has the same configuration as the self-standing bag 100 shown in FIG. 1, so that the same operation and effect as those described for the self-standing bag 100 can be obtained.

[0049]

As described above in detail, according to the present invention, there is provided a laminated film bag for hermetically packaging a fluid content such as a liquid material, which has good productivity and preserves the content. Easy to dispose of after use, easy to dispose of, and easy to fill with contents. Bags after filling with contents are self-supporting, and shape retention of bottles etc. in appearance. Similar to a container, it is smart and has excellent display effects at stores.
When transferring the contents to another container, the capacity of the bag should be 1L.
Even when the bag is relatively large, such as ~ 1.5 L, the upper portion of the bag is formed in a narrow width so that it is easy to hold, and the opening of the spout and the shape retention thereof are good, and the contents are poured out. This has the effect of providing a self-standing bag capable of securely and easily transferring contents to the end without the clogging of the spout portion during the pouring, with the liquid passage surely formed.

[Brief description of the drawings]

FIG. 1 is a front view showing the configuration of a first embodiment of a self-supporting bag of the present invention.

FIG. 2 is a front view showing the configuration of a self-standing bag according to a second embodiment of the present invention.

FIG. 3 is a front view showing the configuration of a third embodiment of the self-standing bag of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1, 1 'Wall film 2 Bottom seal part 3 Bottom film folded part 4 Bottom film cutout part 5 Gusset part 6 Side seal part 7 Notch part 8 Top seal part 9 Cutout line 10 Notch 11 Zipper type fastener 12 Non-seal Depressed part 13 Embossed part 100, 200, 300 Self-standing bag

Continued on front page F term (reference) 3E064 AB23 AB26 BA22 EA07 EA12 EA23 FA03 GA01 HF09 HG03 HG07 HM01 HN05 HP01 HP02 HP05

Claims (5)

[Claims] 1. A lower part of a bag is formed in a form having a gusset part in which a bottom film is folded inward and inserted between two lower parts of a front and rear wall film, and a peripheral part is sealed by heat sealing. In the bag, the body is formed by heat-sealing the side edges on both sides of the front and rear two wall films with the side seals, and the lower gusset is formed by a seal pattern having a shape imparting autonomy. The bag is heat-sealed, and both sides of the bag are narrowed to a shape narrowed from both sides in the vicinity of the middle portion in the length direction of the bag, and are heat-sealed with a seal pattern having a narrow width from there to the top. At the same time, the outside of the heat-sealed portion of the narrowed portion is
A self-standing bag characterized by being cut out leaving a heat seal portion of a predetermined width. 2. An opening at an upper portion of the self-standing bag is heat-sealed with an upper sealing portion having a predetermined width, and an opening means for opening the self-standing bag is provided below the upper sealing portion. The self-standing bag according to claim 1, wherein 3. The self-standing bag according to claim 2, wherein a zipper-type fastener is provided below the opening means. 4. An opening at an upper portion of the self-standing bag is heat-sealed with a seal pattern having a non-sealing recessed portion for forming a narrower spout inside the upper central portion, 2. The self-standing bag according to claim 1, wherein an opening means for opening the self-standing bag is provided so as to cross the depression. 5. The self-standing bag according to claim 1, wherein at least an upper region of the self-standing bag is embossed to improve the opening property of the bag. .