JP2002128093A - Self-supporting bag - Google Patents

Abstract

(57) [Summary] PROBLEM TO BE SOLVED: To provide a self-contained bag for hermetically packaging contents having fluidity such as liquid state, and in particular, to be suitable for use such as transfer of contents to another container, economical efficiency, and appearance. Also provide excellent self-standing bags with good productivity. SOLUTION: The bottom portion of the bag is formed in the form having a gusset portion 5 similar to a standing pouch, and the body portion is formed with both side edges of the front and rear wall films 1, 1 'near an intermediate portion in the length direction of the bag. Side seals 6 and 6 each having a shape in which the width of the inside is narrowed with inclination from both sides and the width is narrow from the top to the top
In addition, the outside of the heat-sealed portion of which the width is narrowed by the inclination is cut out in a horizontal V-shape along the inclination to form a self-standing bag.

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 an alternative container for the container, and as a refill container for refilling the contents of the shape-retaining container, and in addition to the performance such as the sealing property and the preservability of the contents,
The present invention relates to a self-contained bag which is excellent in suitability for use such as transfer to another container and economical efficiency, and has 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 outer shape was narrow, like an ankle shoulder, and curls were likely to occur on both sides of the upper part. 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. However, there is a problem that the opening is difficult to be opened, and the spout is easily blocked during the pouring.
In addition, in the case of a bag, when the contents are to be poured, the upper portion and the lower portion of the bag are generally supported by hand from the lower side so that the body cannot be firmly gripped. When the size is as large as 1.5 L, the width of the upper part of the bag becomes large, and it is difficult to hold the bag by hand, and there is a problem that the transfer operation itself becomes 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, it is easy to fill the contents, the bag after filling the contents is self-supporting, smart in appearance, excellent in display effect at stores, and when transferring the contents to another container Also,
It is easy to hold by hand, the liquid passage through which the contents are poured out is reliably formed, and the contents can be safely and easily transferred to the end without any blockage of the spout during the pouring. To provide bags.

[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 of a shape that imparts independence, and both sides of the bag are formed into a shape narrowed from both sides near the middle portion in the length direction of the bag. The width is reduced, and heat sealing is performed at the side seal portion of the seal pattern having a narrow width from there to the upper portion, and the lower sides of the outer sides of the heat seal portions on both sides of the portion whose width is narrowed with the inclination are respectively The self-standing bag is characterized in that it is cut off in a V-shape in a horizontal direction along the slope.

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,
Or, a so-called ship bottom 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 particularly 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. The outer sides of the heat seal portions on both sides of the portion whose width has been narrowed by the slope are cut off in a lateral V-shape along the slope, respectively. Therefore, the bag after filling the contents is greatly expanded back and forth by the internal pressure of the contents together with the bottom from the vicinity of the middle part to the bottom, and at the same time, the stress toward the upper direction on both sides is released at this part, so the bag on the upper side Is suppressed and a good appearance is obtained.

When the contents are transferred to another container, the upper heat seal portion is cut off and opened, and the upper and lower portions of the bag are manually supported from below, and the upper heat seal portions are held on both sides. Hold it in a bent upward direction and push the narrow upper part lightly from both sides toward the center to easily open the upper part. By tilting 100, the contents flow into the opening, and the internal pressure ensures that a liquid passage is formed in the upper part of the bag. 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, the upper portion is narrow and 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, a projection for providing a spout having a narrow width is provided at a central portion of an upper portion of the self-standing bag, and an upper opening including the projection is provided with the projection. Heat-sealed with a seal pattern having a non-sealable recess inside the portion, and opening means for opening the self-standing bag are provided so as to cross the recess from the side of the protrusion. The self-standing bag according to claim 1, characterized in that:

By adopting such a configuration, in addition to the operation and effect of the invention described in claim 1, the viscosity and the transfer of the contents to be filled in the bag are similar to the invention described in claim 4. Depending on the size of the mouth of the container to be replaced, the width of the protruding portion and the non-seal recess inside the protruding portion can be adjusted and provided appropriately, so that a spout portion with a more suitable width is provided. Since the opening means for opening the self-standing bag is provided so as to traverse the recess from the side of the protrusion, the cutout line at the time of opening is shortened, making it easier. The contents can be opened and the opened narrow-width spout has a protruding shape, so that the contents can be more safely and easily transferred to a small-diameter container.

According to a sixth aspect of the present invention, a hole for holding the bag is provided on at least one of the upper portions of the side seal portions on both sides of the self-standing bag. The self-standing bag according to any one of 1 to 5 above. The hole for holding the bag may be any hole into which a finger can be inserted, for example, a punched hole whose entire periphery is punched out, or a hole formed by a cut line having a connecting portion provided partially. You may. Such a hole may be provided in only one of the upper portions of the side seal portions on both sides of the self-standing bag, but is more preferably provided in the upper portion of both side seal portions.

By adopting such a structure, in addition to the functions and effects of the invention described in any one of the above-mentioned claims 1 to 5, it is easy to hold the self-standing bag when carrying it, and the side seal portions on both sides are provided. If the bag is provided with a hole for holding the bag at the top of the bag, when pouring out the contents, the top of the bag can be held by inserting the fingers so that the holes on both sides are aligned, so it is easy to hold and the bag The liquid passage formed in the upper part can be fixed in an open state, and the contents can be more easily transferred without the outlet being closed during the pouring. FIG.
See (b).

[0027] The invention described in claim 7 is characterized in that at least an upper region of the self-standing bag is embossed for improving the opening property of the bag. 6. The self-standing bag according to any one of 6.

Such embossing may be a linear pattern such as a press 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 configuration, in addition to the functions and effects of the invention according to any one of the above-mentioned claims 1 to 6, the upper portion of the bag is further layered when the contents filled in the bag are poured out. The opening can be easily opened, and the shape retention of the formed liquid passage can be further improved.

[0030]

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. The film used for the self-standing bag of the present invention is mainly a laminated film mainly composed of plastic, but is not particularly limited, and any known laminated film used for a packaging bag for contents such as a liquid may be used. Can also be used, and a suitable material can be freely selected and used according to the use conditions, such as the kind 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 to impart mechanical strength, heat resistance, printability, etc. to the bag, 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, depending on the contents to be filled, ethylene / α-olefin copolymer, ethylene / vinyl acetate copolymer, ethylene / acrylic acid copolymer, ethylene / acrylic ester copolymer may be used. 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 A sealant for a bag that is excellent in hot sealability and has 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. The layer is suitable because it can prevent the occurrence of pinholes due to missing seals. 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 may be anything such as foods and non-foods, as well as liquids, as long as they have fluidity such as powder or 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 a self-standing bag of the present invention 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 punching device that cuts out a part of the outside of the side seals on both sides in a V-shape in a horizontal direction is added, and a hole for holding a bag is formed on the upper part of the side seals on both sides as necessary. Punching device for providing easy-open means such as notches and half-cut lines, laser beam irradiation device, zipper type fastener mounting device, embossing device for embossing the upper part of the bag, etc. In addition, it can be easily manufactured by processing each.

[0041]

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. 1 to 6 are front views each showing a configuration of an embodiment of the self-standing bag of the present invention. And
FIGS. 7 (a) and 7 (b) are perspective views of a main part for explaining a method of transferring the contents filled in the self-standing bag of the present invention to another container, in particular, how to hold the bag. .

FIG. 1 is a front view showing the structure of the 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. The width of the edges on both sides of 1, 1 'is reduced to a narrowed shape with a slope from both sides near the middle part in the length direction of the bag, and the width becomes vertical and narrow from the top to the top. The seal pattern, that is, the side seal portions 6 and 6 are heat-sealed, and the outer sides of the heat seal portions on both sides of the portion whose width is narrowed by the inclination are formed in a lateral V-shape whose lower side is along the inclination. It is formed by being cut out at the notch portions 7,7. The upper seal portion 8 at the upper part of the bag is heat-sealed after the contents are filled. Below the cut-out line 9 as a means for opening the bag, notches 10 are provided at both ends. , 10 are provided in advance at the predetermined positions.

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, regarding the shape of the side seal portions 6 on both sides of the self-standing bag 100,
After narrowing with inclination from both sides in the vicinity of the middle part of the bag in the length direction, it was shown as a vertical shape from there to the top,
After narrowing from both sides with a slope, it is not always necessary to be vertical, and unless the width is widened again, the shape is parallel on both sides, or both sides are inclined inward from there to the top, and then toward the top The width may be narrowed.

By adopting such a configuration, the self-supporting 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 by the bottom seal portion 2 in the form of a ship bottom having a curved line on the inner side, so that the bag is in the middle in the bag length direction. 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 packaging can be performed compactly for its capacity, distribution costs and display space at stores can be reduced.

Further, regarding 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 seal portions 6 and 6 which are perpendicular to the upper portion, and the outer sides of the heat sealing portions on both sides of the portion whose width is narrowed by the inclination are respectively formed so that the lower sides thereof are directed sideways along the inclination. Since the V-shaped cutouts 7 and 7 are cut out, the lower part from the vicinity of the middle part is greatly expanded back and forth by the internal pressure of the contents together with the bottom part, and at the same time, the stress toward the upper part on both sides is increased. , Curling occurring on both sides of the upper portion is suppressed, and a good appearance is obtained.

When the contents are transferred to another container, the upper seal portion 8 is cut off along the cut line 9 using one of the notches 10 and opened, and the self-standing bag 100 is opened. Hold the upper and lower parts of the upper part by hand from below, hold the upper part by bending the heat seal parts on both sides upward, and press the upper part of the narrow width lightly from both sides toward the center, so that the upper part is easily The self-standing bag 10 can be opened with the opening facing the mouth of the container.
By inclining 0, the contents flow into the opening, and the internal pressure ensures that a liquid passage is formed above the self-standing bag 100. 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 configuration of a second embodiment of the self-standing bag of the present invention. Self-standing bag 200 shown in FIG.
In the configuration 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 12 is provided below the cut line 9 and the notches 10, 10. Are additionally provided, and punching holes 11, 11, which are punched all around as holes for holding bags, are additionally provided at the upper portions of the side seal portions 6, 6 on both sides. . Except for the above-mentioned additional configuration, all of them 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 functions and effects 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 to be divided and used a plurality of times.
Further, punching holes 11 for holding the bag are provided at the upper portions of the side seal portions 6 on both sides of the self-standing bag 200, so that the bag can be easily carried and the bag is filled. When the contents are transferred to another container, as shown in (b) of FIG. 7, the upper part of the self-standing bag 200 can be held by inserting the fingers by aligning the punched holes 11 on both sides. Easy to hold and self-standing bag 200
The liquid passage formed in the upper part of the container can be fixed in an open state, and the contents can be more easily transferred without closing the spout during the pouring.

FIG. 3 is a front view showing the configuration of a third embodiment of the self-standing bag of the present invention. Self-standing bag 300 shown in FIG.
Changes the seal pattern of the upper seal portion 8 for sealing the upper opening in the configuration of the self-standing bag 100 shown in FIG. 1 to a seal pattern having a non-sealable concave portion 13 in the central portion on the inside. At the same time, the opening means for opening the self-standing bag 300, in this case, the positions of the cutout line 9 and the notches 10, 10 provided at both ends of the self-standing bag 300 are changed from the side of the bag to the unsealed recessed portion 13 of the upper seal portion 8. It is configured so as to be changed to a position where it can be cut across, and is configured similarly to the self-standing bag 100 shown in FIG.

By adopting such a configuration, in addition to the functions and effects described for the self-standing bag 100 shown in FIG.
The width of the non-seal dent 13 provided at the central portion inside the upper seal portion 8 is determined according to the viscosity of the contents filled in the bag and the size of the mouth of the container for transferring the contents. By setting the width to a suitable width, a spout portion having a more suitable width can be formed. Therefore, when the contents filled in the self-standing bag 300 are transferred to another container, the upper seal portion 8 is cut along the cut line 9 by using one of the notches 10 and is opened, so that the upper seal portion 8 is opened. A spout having a suitable width can be formed by the recess 13 of the seal.
As shown in the figure, the upper part of the bag can be held by bending upward, so that the opened spout part is kept well-shaped,
The contents can be transferred more safely and easily.

FIG. 4 is a front view showing the structure of a self-standing bag according to a fourth embodiment of the present invention. Self-standing bag 400 shown in FIG.
In the configuration of the self-standing bag 300 shown in FIG. 3, punching holes 11, 11, which are punched all around as holes for holding the bag, are added above the side seal portions 6, 6 on both sides. It is provided and configured. And the above-mentioned punched hole 1
Except for the addition of 1 and 11, all the self-standing bags 300 shown in FIG.
It is formed in the same manner as described above.

By adopting such a configuration, in addition to the functions and effects described for the self-standing bag 300 shown in FIG.
Since punched holes 11 for holding the bag are provided above the side seal portions 6 on both sides, the self-standing bag 400 is provided.
At the same time, when the contents filled in the bag are transferred to another container, the punched holes 11 on both sides are aligned as shown in FIG. Since the upper part of the self-standing bag 400 can be held by inserting a finger, it is easy to hold, and the liquid passage formed at the upper part of the self-standing bag 400 can be fixed in an open state, and the spout is closed during the pouring. No content can be transferred more easily.

FIG. 5 is a front view showing the structure of a fifth embodiment of the self-standing bag of the present invention. Self-standing bag 500 shown in FIG.
In the configuration of the self-standing bag 400 shown in FIG. 4, the holes for holding the bags provided on the upper side of the side seal portions 6 on both sides are partially punched holes instead of punched holes all around. When the self-standing bag 500 is opened, the embossing process is performed under the non-sealed recess 13 which forms the spout when the self-standing bag 500 is opened. A total of three additional portions 15 are provided on both sides and the central portion of the non-seal recess 13 from below to below.

By adopting such a structure, the function of holding the bag itself does not change even if the holes for holding the bag are changed to the holes 14 and 14 formed by the score lines,
In the manufacturing process of No. 00, quality control becomes easy because no holes are formed, and even in the actual use stage, the joints of the holes can be bent, fingers can be inserted, and a bag can be held, so that the touch can be softened. There are advantages. Further, by providing the embossed portion 15 below the non-sealed recess 13 forming the spout, the spout can be easily opened when the contents filled in the bag are poured out. Since the shape retention of the liquid passage formed in the outlet can be further improved, the contents can be more easily transferred without closing the spout during the pouring. Except for the above changes, the configuration is the same as that of the self-standing bag 400 shown in FIG. 4, and therefore, the same operation and effect as those of the self-standing bag 400 shown in FIG. 4 can be obtained.

FIG. 6 is a front view showing the configuration of a sixth embodiment of the self-standing bag of the present invention. Self-standing bag 600 shown in FIG.
In the configuration of the self-supporting bag 400 shown in FIG. 4, a protrusion for forming a narrow width spout by extending the front and rear wall films at the center of the upper portion of the bag is provided. The seal pattern of the seal portion 8 is changed to a seal pattern having a non-sealable concave portion 13 inside the protruding portion, and an opening means for opening the bag, in this case, a cut line 9 and notches 10 at both ends thereof. 10, the position is changed from the side of the protruding portion to a position crossing the non-sealed recessed portion 13.

By adopting such a configuration, in addition to the function and effect of the self-standing bag 400 shown in FIG. 4, the non-sealed recess 13 forming the narrow width spout portion and the opening means of the bag are provided. Is provided on the protruding portion provided on the upper part of the self-standing bag 600, so that the cut line at the time of opening the bag is shortened, so that the bag can be more easily opened, and the opened narrow width spout portion. When the contents are transferred, the contents can be easily fixed to the mouth even in a small-diameter container, and the contents can be transferred more safely and easily.

[0058]

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 the contents, the bag after filling the contents is self-supporting, and curl generated at the top of the bag is suppressed. It has excellent display effect at the store, and when transferring the contents to another container, it is easy to hold and pour even if the bag capacity is relatively large, such as 1L to 1.5L. Is easy, and the opening property of the spout port and the shape retention thereof are good, the liquid passage through which the contents are poured out is surely formed, and the pouring port is not clogged in the middle of the pouring. It has the effect of providing a self-standing bag that can safely and easily transfer contents up to

[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.

FIG. 4 is a front view showing the configuration of a self-standing bag according to a fourth embodiment of the present invention.

FIG. 5 is a front view showing the configuration of a fifth embodiment of the self-standing bag of the present invention.

FIG. 6 is a front view showing the configuration of a sixth embodiment of the self-standing bag of the present invention.

FIGS. 7 (a) and 7 (b) are perspective views of essential parts for explaining a method for transferring the contents filled in the self-standing bag of the present invention to another container.

[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 Punch hole 12 Zipper type fastener 13 Non-sealed recessed part 14 Hole with cut line 15 Embossed part 100, 200, 300, 400, 500, 600 Self-standing bag

Claims (7)

[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 sides of the seal pattern are heat-sealed, and the width of the bag is reduced to a shape in which both sides of the bag are narrowed from both sides in the vicinity of the middle portion in the length direction of the bag, and the width of the bag becomes narrower from there. The outer sides of the heat seal portions on both sides of the portion which is heat-sealed by the seal portion and the width of which is reduced by the inclination are cut off in a lateral V-shape along a lower side thereof, respectively. Independent . 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 narrow width spout inside a central portion of the upper 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. A protruding portion for providing a spout having a narrow width is provided at a central portion of an upper portion of the self-standing bag, and an upper opening including the protruding portion has a non-sealable inside of the protruding portion. 2. The heat-sealing device according to claim 1, wherein said self-standing bag is heat-sealed with a seal pattern having a depression, and opening means for opening said self-standing bag is provided so as to cross said depression from a side of said projection. Self-standing bag described. 6. The bag according to claim 1, wherein a hole for holding the bag is provided in at least one of the upper portions of the side seal portions on both sides of the self-standing bag. Self-standing bag described. 7. 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 self-standing bag. .