JP2002128094A - 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 a form having a gusset portion 5 similar to a standing pouch, and the body portion is formed such that both side edges of the front and rear wall films 1 and 1 'are extended from above the gusset portion 5 to the length of the body portion. The width of the inside is narrowed from both sides to the vicinity of the middle part in the vertical direction, and is formed by heat sealing with side seals 6 and 6 having a narrow width from there to the upper part. A self-standing bag is formed by cutting out the outside of 6, 6 so as to leave a heat-seal portion of a predetermined width in a portion where the inside width is narrowed, for example, with an inclination, and to leave a heat-seal portion of a wide width from there to the upper portion. I do.

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 special filling device is required, and there is a problem that productivity at the time of filling is lowered and facility costs are extra. 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 liquid contents such as liquid materials, and is excellent in productivity, economy, preservation of contents, lightweight and not bulky, easy to dispose 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 In addition, it is easy to hold by hand, the liquid passage through which the contents are poured out is reliably formed, and the contents are safely and easily transferred to the end without blocking the spout during the pouring. It is an object of the present invention to provide a self-standing bag which can be suitably used not only as a substitute container such as a bottle but also as a refill container.

[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 inclined from both sides from above the gusset portion to near the middle portion in the longitudinal direction of the trunk. The width of the bag is reduced,
It is heat-sealed with a side seal portion having a shape having a narrow width from there to the upper portion, and the outside of the side seal portion on both sides is cut out leaving a heat seal portion of a predetermined width. Consists of bags.

In the self-standing bag of the present invention, the seal pattern having the shape of imparting self-sustainability for heat sealing the lower gusset portion is a seal pattern in which the inside is concavely concave from both sides toward the center. Anything, especially
A so-called ship bottom seal pattern, such as a seal pattern in which the inside is concave in a curved linear shape from both sides toward the center, or a seal pattern in which the inside rises straight from the bottom with a predetermined width to both sides inclining outward. Is particularly preferred.
Further, the width of the upper portion may be narrowed so that it can be easily held by hand.

[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. The bag filled with the contents is greatly expanded back and forth by the lower gusset part and its sealing pattern, and legs are formed by the heat seal part on the outer periphery of the bottom, giving excellent independence It is easy to handle, and the width of the bag is narrowed from both sides, from the top of the lower gusset to the middle of the body in the length direction, and the width of the bag is narrow from the top to the top. Heat-sealed at the side seals of the shape
The outer sides of the side seals on both sides are cut away leaving a heat seal part of a predetermined width, so that the lower part of the bag is not cylindrical but lower, it expands into a trapezoidal shape with a narrow upper part, making it more self-supporting and stable Good, and the bag does not suddenly shrink in the middle part, so there is no bent protruding part in the middle part,
The whole thing spreads smoothly and the appearance becomes a smart shape similar to a bottle.

When transferring the contents to another container, the upper heat-sealed portion is cut off and opened, the upper and lower portions of the bag are supported by hand from below, and the narrow upper portion is centered from both sides. The upper part can be easily opened by pushing lightly toward the part, and in this state, the contents flow to the opening by tilting the bag with the opening toward the mouth of the container, and the internal pressure A liquid passage is formed at the upper part of the bag.
Therefore, the flow of the contents to the opening is performed smoothly,
The shape of the liquid passage is good, the opening does not close during the pouring, and even if the bag has a relatively large capacity, the upper part is narrow and easy to hold, making it safe and easy to the end. The contents can be transferred to the server.

[0012] In the invention described in claim 2, the lower part of the bag is
Between the lower part of the two front and rear wall films, the bottom film is folded inward and inserted, and the peripheral part is formed in a form having a gusset part which is sealed by heat sealing, and the body part is formed of two front and rear faces. In a bag formed by heat-sealing the edge portions on both sides of the wall film with the side seal portion, the lower gusset portion is heat-sealed with a seal pattern having a shape imparting autonomy, and both side portions of the bag are formed. The width of the bag is narrowed from both sides to the middle of the body in the longitudinal direction from the top of the gusset portion, and the width of the bag is narrowed from both sides. The outer side of the side seal portion has a predetermined width of heat seal portion near the middle portion in the length direction of the body portion where the width of the bag is narrowed with the inclination, and the heat seal portion having a wide width from there to the upper portion. Leave a department It consists of self-standing bag which is characterized in that is essential Ri.

According to this construction, the cutouts on the outer sides of the side seals on both sides of the self-standing bag according to the first aspect of the present invention are formed from the top of the lower gusset near the middle in the longitudinal direction of the trunk. In this configuration, a heat seal portion having a predetermined width is left, and a heat seal portion having a wide width is left from there. The predetermined width, including the case of the self-standing bag according to the first aspect of the present invention, may be any as long as the strength of the bag can be maintained, and usually a range of about 4 to 10 mm is appropriate. In addition, the heat seal portion having a wide width to be left between the vicinity of the middle portion and the upper portion is sharpened by bending this portion in the length direction of the bag when pouring out the contents filled in the bag. The end is soft to the touch without touching the hand, and if necessary, a hole for holding the bag is provided in this part to make it easier to hold, and it is about the same as the width of the original bag (width of the bottom) It can be set appropriately within the range up to.

By adopting such a configuration, the appearance of the bag is changed as compared with the self-standing bag according to the first aspect of the present invention. Since the upper portion of the bag can be held, it has a better touch and is easier to hold. In addition, the rigidity of this portion (bent portion) in the longitudinal direction of the bag is increased, which has a reinforcing effect. The shape retention of the liquid path can be further improved. Except for the above-described changes, the self-standing bag according to the first aspect of the invention has the same configuration as the self-standing bag according to the first aspect, so that similar effects can be obtained.

According to a third aspect of the present invention, a hole for holding a bag is provided in a heat seal portion having a wide width between the vicinity of the middle portion in the longitudinal direction of the body portion and the upper portion of the side seal portions on both sides. The self-standing bag according to claim 2, wherein the self-standing bag is provided. 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.

By adopting such a configuration, in addition to the functions and effects of the invention described in claim 2, it is easy to hold the self-standing bag when carrying the bag, and when discharging the contents,
As you can hold the top of the bag from above by inserting your fingers so that the holes on both sides match, it is easy to hold,
In addition, the liquid passage formed in the upper part of the bag can be fixed in an open state, and the contents can be more easily transferred without closing the spout during the pouring. (B) of FIG.
reference.

According to a fourth aspect of the present invention, there is provided an upper seal having a shape in which an opening at an upper portion of the self-standing bag has a non-sealing recess for forming a narrow width spout inside a central portion. 4. The self-standing bag according to any one of claims 1 to 3, 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 recessed portion. Become.

In the present invention, as means for opening the self-standing bag, for example, an opening instruction line by printing or the like is provided, and the portion is cut off with scissors or the like.
Means for providing a notch in the heat seal portion on the outer periphery of the bag and tearing the notch as the opening start position, (b) Easy tearing film, for example, a uniaxially stretched film, in order to facilitate opening in a certain direction, and opening in the stretching direction. Means for laminating in a laminated film so that the tearing direction at the time coincides with the film, and tearing using the laminated film as a bag; (c) means for tearing along a half-cut line formed by laser beam irradiation processing; ) There are 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 the tears are used as a starting point to easily tear. Alternatively, they can be adopted in appropriate combinations.

As the above-mentioned notch, a one-shaped or V-shaped notch is often used, but the shape thereof is not limited, and any shape having a pointed portion in a 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,
One piece may be used, but assuming that the tear direction is shifted, one piece or two pieces on each side of the center half-cut line.
A plurality of half-cut lines, such as a book, may be provided in a parallel shape or a shape converging with the central half-cut line.

As the opening means, various means as described above can be used, 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 any one of claims 1 to 3, it is possible to clearly indicate the opening position of the bag, so that there is no mistake and the opening instruction is provided. By using an easy-opening means such as a notch, a half-cut line, and lamination of a uniaxially stretched film in combination with the line, the sheet can be easily torn open by hand without using tools such as scissors. Further, since the opening means is provided so as to cross the non-seal dent provided inside the center of the upper seal part of the self-standing bag, the width of the dent is changed by changing the viscosity of the contents or transferring. By appropriately adjusting according to the size of the mouth of the container to perform, only by opening the self-standing bag using the opening means, it is possible to form a spout of a suitable size,
The contents can be transferred more safely and easily.

According to a fifth aspect of the present invention, the opening at the upper part of the self-standing bag is heat-sealed with an upper seal part having a predetermined width, and the lower part of the upper seal part is used to open the self-standing bag. The self-standing bag according to any one of claims 1 to 3, wherein an opening means is provided, and 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 that can be fitted to each other, and both of the ridge and the concave ridge are provided on the inner surface of the opening of the bag. 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 according to any one of claims 1 to 3, even when the contents filled in the bag are used in a plurality of times, The upper seal portion is cut off by opening means to open the bag, then the zipper type fastener is disengaged to open the upper opening, and after partially discharging the contents, the opening is easily closed again. The contents remaining in the bag can be safely stored until the next use. Such a configuration is particularly effective when the capacity of the bag is large.

According to a sixth aspect of the present invention, a protrusion for providing a spout having a narrow width is provided at the center of the upper part of the self-standing bag, and the upper opening including the protrusion is provided with the opening. The self-standing bag is heat-sealed with an upper seal portion having a non-sealed depression inside the projection, and opening means for opening the self-standing bag is provided so as to cross the depression from the side of the projection. 4. The method according to claim 2, wherein
Consisting of a self-standing bag described in (1).

By adopting such a structure, in addition to the effects of the invention described in claim 2 or 3, the viscosity of the contents filled in the bag and the size of the mouth of the container for transferring the contents are changed. The width of the protruding portion and the width of the non-seal recessed portion inside the protruding portion can be adjusted and provided appropriately, so that a spout portion having a more suitable width is provided, and further, the self-standing bag is opened. Since the opening means is provided so as to cross the recess from the side of the protruding portion, the cut line at the time of opening is shortened, and the opening can be more easily performed. Since the spout has a narrow width, the contents can be more safely and easily transferred to a small-diameter container.

[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 the outer sides of the side seal portions on both sides into respective shapes is added, and, if necessary, when the width of the heat seal portion above the side seal portions on both sides is increased, A punching device for providing a hole for holding a bag in the heat seal portion, a punching device for providing an easy-opening means such as a notch or a half-cut line, a laser beam irradiation device, and a zipper-type fastener attaching device, It can be easily manufactured by appropriately adding an embossing device or the like for performing embossing on the upper portion and 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 illustrating a method of transferring the contents filled in the self-standing bag of the present invention to another container, particularly 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. 1, 2 ', gusset part 5
The width of the bag is narrowed from both sides to the middle of the body in the longitudinal direction from above, and the width of the bag is narrowed from both sides. The outer sides of the side seal portions 6, 6 are cut out at the cutout portions 7, 7, leaving a heat seal portion having a predetermined width.

The upper opening of the bag is heat-sealed by the upper seal portion 8 after the contents are filled, and the upper seal portion 8 has a narrow width spout inside the central portion thereof. And the bag opening means, in this case, the cut line 9 and the notches 10, 10 at the ends on both sides thereof, traverse the unsealed recess 11 As described above, it is provided in advance at the predetermined position.

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,
The width of the bag is narrowed from both sides to the middle of the bag in the longitudinal direction from the top of the gusset portion 5 and the width of the bag is reduced, and the width from the middle to the top is reduced vertically. It is not always necessary to be vertical, and the shape may be parallel on both sides, or may be a shape in which both sides are inclined inward from there to the top and further narrow toward the top, unless the width is widened again. .

By adopting such a configuration, the self-standing bag 100 is lightweight, not bulky, has good preservability of the contents, and has good disposal properties 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.

The self-standing bag 100 filled with the contents is heat-sealed at the lower gusset part 5 with the bottom seal part 2 having a bottom shape formed by a curved line on the inside, so that the bottom part is rounded back and forth. It spreads greatly, and the outer periphery of the bottom surface is formed with a ring-shaped leg portion formed by a heat seal portion joined on both sides at the bottom film cutout portions 4, 4, so that excellent self-supporting property is provided and easy to handle, Both sides of the bag are inclined from both sides from the top of the lower gusset part 5 to the vicinity of the middle part in the longitudinal direction of the body, and the width of the bag is narrowed. Part seal part 6, 6
And the outer sides of the side seal portions on both sides are cut out portions 7 and 7 except for a heat seal portion having a predetermined width.
The lower part from the middle part of the bag spreads in a trapezoidal shape in which the upper part is narrowed instead of a cylinder because it is cut off, and the self-sustaining stability is better, and the bag suddenly narrows near the middle part. Since there are no bent parts, no bent protruding portion is generated near the middle part, and the whole is smoothly spread and has a smart shape similar to a bottle or the like.

When the contents are transferred to another container, the cut line 9 is cut using one of the notches 10.
By cutting off the upper seal portion 8 along, the spout portion having an appropriate width by the non-seal recess portion 11 is opened. Then, the upper and lower parts of the self-standing bag 100 are supported by hands from below, and the upper part of the bag is lightly pushed from both sides toward the center, so that the spout can be easily opened. By tilting the self-standing bag 100 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, the upper portion is narrow and 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 described above, only the shape of the notch portions 7, 7 notching the outside of the side seal portions 6, 6 on both sides of the bag, The heat seal portion having a predetermined width is left up to the vicinity of the middle portion in the length direction of the portion, and the heat seal portion having a wide width is left up to the upper portion.

By adopting such a configuration, the appearance of the bag is changed as compared with the self-standing bag 100 shown in FIG. 1, but the heat is applied from the vicinity of the middle portion of the side seal portions 6 on both sides to the upper portion. The wide width of the seal allows you to use a large space for the surface print design,
When the content filled in the self-standing bag 200 is poured out, as shown in FIG. 7A, the length of the bag together with both sides of the spout opening portion where the upper portions of the side seal portions 6, 6 are opened. As it can be folded in the direction, the sharp part of the end does not touch the hand, the touch is soft and easy to hold, and the bent part increases the rigidity of the bag in the length direction of the part Since the reinforcing effect is obtained, the shape retention of the liquid passage formed in the upper part of the bag is further improved, and the contents can be easily transferred. Except for the above changes, the self-standing bag 100 shown in FIG. 1 has the same configuration as the self-standing bag 100 shown in FIG.

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.
In the configuration of the self-standing bag 200 shown in FIG. 2, a wide-width heat seal portion provided from the vicinity of the middle portion to the upper portion of the side seal portions 6 on both sides of the bag is provided with a bag for holding the bag. The holes are formed by additionally providing punched holes 12, 12 whose entire circumferences are punched out, and are otherwise formed and configured similarly to the self-standing bag 200 shown in FIG. 2. is there.

By adopting such a configuration, in addition to the function and effect of the self-standing bag 200 shown in FIG. 2, the self-standing bag 300 can be held by inserting fingers into the punched holes 12 and 12, so that the Even when the capacity is large, it is easy to hold and the self-standing bag 300 can be easily carried. Also, when transferring the contents filled in the bag to another container, for example, as shown in FIG.
Since the upper part of the bag can be held from above by inserting the fingers so that the two and 12 are aligned, the transfer operation becomes easy, and at the same time, the liquid passage formed in the upper part of the self-standing bag 300 is opened. The contents can be fixed, and the contents can be more easily transferred without closing the spout during the pouring.

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, the punching holes 12, 12 provided in the wide-width heat seal portion on the side seal portions 6, 6 on both sides of the bag are partially connected. When the self-standing bag 400 is opened, the embossed portion 14 is formed under the non-sealed recessed portion 11 forming the spout when the self-standing bag 400 is opened. Are additionally provided on both sides and the central portion of the non-seal recess 11 from below to below.

By adopting such a configuration, the function of holding the bag itself does not change even if the holes for holding the bag are changed to the cut holes 13 and 13, but the self-standing bag 4 is not changed.
In the manufacturing process of No. 00, quality control becomes easy because holes are not generated, and even in the actual use stage, the joints of the holes can be bent and fingers can be inserted, and the bag can be held at the bent portion, so that touch is possible. There is an advantage that can be made soft. In addition, a non-sealed recess 11 forming a spout
When the contents filled in the bag are poured out, the embossed portion 14 can be provided to easily open the spout, and the shape retention of the liquid passage formed in the spout can be improved. Since the content can be further improved, the contents can be more easily transferred without closing the spout during the pouring. Except for the above changes, the self-standing bag 300 shown in FIG. 3 has the same configuration as the self-standing bag 300 shown in FIG.
The same operation and effect as those of 00 can be obtained.

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 300 shown in FIG. 3, the seal pattern of the upper seal portion 8 provided on the upper portion of the bag, the cut line 9 for cutting off the upper seal portion 8 and opening the bag, and the cut line 9 provided at both ends thereof The notches 10 and 10 are modified as described below, and a zipper-type fastener 15 is additionally provided below the cutout line 9 and the notches 10 and 10 at both ends thereof. Except for the above, all are formed and configured in the same manner as the self-standing bag 300 shown in FIG. That is, when the seal pattern of the upper seal portion 8 is changed to a seal pattern having a predetermined width, the cutout line 9 and the notches 10 and 10 at both ends thereof are provided below the upper seal portion 8 to open the self-standing bag 500. Is the upper seal part 8
The entire structure is cut and opened, and a zipper-type fastener 15 is additionally provided below the cut line 9 and the notches 10 and 10 at both ends thereof.

By using such a structure, when using the contents filled in the self-standing bag 500, first, the upper part is cut off along the cutting line 9 by using the notch 10, so that the upper part is cut off. The entire seal portion 8 is cut off,
Then, by releasing the zipper-type fastener, the upper part of the self-standing bag 500 is opened, so that the contents can be poured out. And after pouring out some of the contents,
The opening can be repeatedly and easily reclosed,
The contents remaining in the bag can be safely stored until the next 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. 3 has the same configuration as the self-standing bag 300 shown in FIG. 3 except for the configuration of the upper seal portion 8, the cutout line 9, the notches 10, 10, and the zipper type fastener. Similar effects 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-standing bag 300 shown in FIG. 3, a protruding portion for forming a narrow width spout by extending the front and rear wall films 1, 1 'is formed at the center of the upper portion of the bag. At the same time, the seal pattern of the upper seal portion 8 is changed to a seal pattern having a non-sealable concave portion 11 inside the protruding portion, and an opening means for opening the bag, in this case, the perforated line 9 and its The position of the notches 10 and 10 at both ends is changed from the side of the protruding portion to a position crossing the non-sealed depression 11.

By adopting such a structure, in addition to the function and effect of the self-standing bag 300 shown in FIG. 3, the non-sealed recessed portion 11 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 perforated line 9 when opening the bag is shortened, so that the bag can be more easily opened, and the opened narrow width spout. Since the portion has a protruding shape, when the contents are transferred, it is easy to fix the small-diameter container to the mouth thereof, 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. It is easy to dispose of after use, and it is easy to dispose of the contents, and the bag after filling the contents is self-supporting, the appearance of the bag is good, Excellent display effect, and when transferring the contents to another container, even if the capacity of the bag is relatively large, such as 1 L to 1.5 L, it is easy to hold and easy to pour out, and The opening of the spout and the shape retention thereof are good, the liquid passage through which the contents are poured out is reliably formed, and the spout is safely and easily until the end without being clogged during the pouring. This has the effect of providing a self-supporting bag in which the contents can be transferred.

[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 illustrating a method for transferring contents filled in a 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 back part 4 Bottom film cutout part 5 Gusset part 6 Side seal part 7 Notch part 8 Top seal part 9 Cut-out line 10 Notch 11 Non-seal dent part 12 Punching Hole 13 Cut line 14 Embossed part 15 Zipper type fastener 100, 200, 300, 400, 500, 600 Self-standing bag

Continued on front page F-term (reference) 3E064 AB25 AB26 BA17 BA27 BA28 BA30 BA36 BA55 BA60 BB03 BC08 BC18 EA01 EA04 EA05 EA12 EA18 EA23 FA04 FA05 FA06 GA01 HJ01 HN06 HP01

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 side of the shape which is heat-sealed, and the width of the bag is narrowed from both sides from the top of the gusset part to the vicinity of the middle part in the longitudinal direction of the body, and the width of the bag becomes narrower from the both sides to the upper part. A self-standing bag which is heat-sealed at a part seal portion, and wherein the outside of the side seal portions on both sides is cut away leaving a heat seal portion of a predetermined width. 2. A bag having a gusset portion in which a lower portion of a bag is inserted between a lower portion of a front and rear wall film and a bottom film is folded inward and a peripheral portion 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 side of the shape which is heat-sealed, and the width of the bag is narrowed from both sides from the top of the gusset part to the vicinity of the middle part in the longitudinal direction of the body, and the width of the bag becomes narrower from the both sides to the upper part. The outer side of the side seal portions on both sides is heat-sealed at the outer seal portion, leaving a heat seal portion of a predetermined width up to the vicinity of the middle portion in the length direction of the trunk portion where the width of the bag is narrowed with the inclination, From there to the top there is a wide width Self-standing bag, characterized in that are cut out to leave Toshiru portion. 3. A heat-seal portion having a wide width between the vicinity of the middle portion in the longitudinal direction of the body portion and the upper portion of the side seal portions on both sides, wherein a hole for holding a bag is provided. The self-supporting bag according to claim 2, wherein 4. An opening at an upper portion of the self-standing bag is heat-sealed with an upper seal portion having a non-sealable concave portion for forming a narrow width spout portion inside a central portion,
The self-standing bag according to any one of claims 1 to 3, wherein an opening means for opening the self-standing bag is provided so as to cross the depression. 5. 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 any one of claims 1 to 3, wherein a zipper-type fastener is provided below the opening means. 6. A protruding portion for providing a narrow width spout portion is provided at a central portion of an upper portion of the self-standing bag, and an upper opening including the protruding portion is not sealed inside the protruding portion. Heat-sealed with an upper seal having a shape having a dent portion, and an opening means for opening the self-standing bag is provided so as to cross the dent portion from a side portion of the protruding portion. The self-standing bag according to claim 2 or 3, wherein the self-standing bag is used. 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. .