JP2001114297A - Pouch for refill - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pouch for refill which can be easily formed and filled with the contents and provided with an outpouring part exellent in the opening property and the shape-retaining property and which can rapidly and easily transfer even a viscous content. SOLUTION: In the pouch 200 for refill, a gusset part 3 is formed at the bottom and both sides are heat-sealed at the body seal parts 7, 7 to form a shape opened at the upper part, films of both faces, that is, the wall face film 1 and the opposed bottom face film 2 are stretched at the center of the lower end of one (front side) fold in the forward and rearward folds of the gusset part 3, and a narrow outpouring part 8 is projected downward part. Both sides of the fold part is heat-sealed by the forward fold-shaped seal parts 5, 5 constricted at both sides from the upper corner to both side bases of the outpouring part 8 and connected to the heat-seal parts of both sides of the outpouring part 8. The other fold part is heat-sealed by the obtuse V-shaped rearward fold-shaped seal part 6 at the inside.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refillable pouch in which liquid contents such as a liquid material are hermetically sealed and packaged for distribution, and at the time of use, the contents are transferred to another container for use. Also, the present invention relates to a refill pouch having improved pouch shape so that operability when transferring contents to another container is good and even contents having relatively high viscosity can be transferred safely and easily to the end.

[0002]

2. Description of the Related Art Conventionally, refillable pouches in which fluid contents such as liquids are sealed and packaged, and the contents are transferred to another container at the time of use, include, for example, a part of the upper part of the pouch. A spout with a protruding shape with a narrower width is provided.Also, the spout is further embossed so that the spout does not block during the pouring. And a separate spout made of a plastic molding or the like is attached to a part of the upper part of the pouch by heat bonding.

[0003]

However, a pouch with a protruding spout having a reduced width is provided at a part of the upper part of the pouch, and the spout is formed by embossing the spout. Those with improved shape retention can be used favorably for low-viscosity contents,
When the viscosity of the contents becomes high, there is a problem that the dispensing speed decreases rapidly, it takes a long time to dispense, and the contents are liable to remain in the pouch at the final stage of the dispensing.

[0004] Further, a spout provided with a separate spout made of a plastic molding or the like at a part of the upper part of the pouch can be suitably used when the viscosity of the content is relatively low, but the viscosity of the content is low. In addition to the same problems as above, the pouch manufacturing process increases, and the spout itself becomes expensive.In addition, the empty pouch with the spout increases in thickness, so the cost of storage and transportation also increases. It becomes expensive and requires special filling equipment when filling the contents.In addition, the number of empty pouches loaded into the feeder of the filling machine is greatly reduced, and the operator frequently supplies empty pouches. For example, there is a problem that the cost is increased and the complexity of the steps and operations is increased, such as the necessity.

[0005] The present invention has been made to solve the above problems, and the object thereof is to provide:
It does not require a separate spout for molded products, can be manufactured with the same process as ordinary pouches with good productivity, can be easily filled with contents, and has a relatively high viscosity when used. It is an object of the present invention to provide an inexpensive and reusable pouch that can be quickly and easily transferred even with a simple operation without spilling out the contents. .

[0006]

The above objects can be attained by the present invention described below. In other words, the invention described in claim 1 is a pouch in which a peripheral edge portion is heat-sealed in a bag shape and a fluid content is hermetically sealed and packaged, and the bottom portion is a lower portion of the front and rear surface wall films. Between,
It is formed in a form having a gusset part which is inserted by folding the bottom film inward, and of the front and rear pleats of the gusset part, the central part of the lower end of one pleat is a double-sided film, that is, The wall film and the bottom film facing the wall film are extended so that a narrow width spout portion formed by heat-sealing the outer periphery is provided so as to protrude downward, and the fold on the side where the spout portion is provided. On both sides of the shape
Both sides are narrowed from the upper corners of both sides to the bases on both sides of the spout, and are heat-sealed with a seal pattern that leads to the heat seals on both sides of the spout. Characterized by being heat-sealed with a concave seal pattern from the center to the center.

In the above, the seal pattern of the other fold, that is, the fold having no spout, may be any seal pattern in which the inside is concave from both sides to the center. For example, in addition to a seal pattern in which the inside is formed in an obtuse V-shape, a ship bottom shape in which the inside is formed by a curved line, or a ship bottom that rises straight from the bottom of a fixed width with both sides inclined outward. A seal pattern such as a shape is suitable in that the pouch is easy to impart independence, and in particular, a V-shaped seal pattern having an obtuse angle on the inside, in addition to the independence, allows the content filled in the pouch to be used for other purposes. When the film at the spout is spread on both sides due to the internal pressure of the contents when transferring to the container, the film is further sheared from the lower end of the V-shape to the opening at the tip of the spout on the bottom film side of the spout. Since ridge such are formed, more preferred in that it can further improve the shape retention of the spout which is opened.

By adopting such a configuration, the pouch can be easily manufactured, and the filling port is provided at the bottom side of the pouch when filling the contents. Can be used to easily fill the contents,
Can be sealed. Then, the pouch filled with the contents is flattened by, for example, bending the spout downwardly projecting downward from the lower end of the bottom by 90 ° inward and fixing it to the pouch body with an adhesive seal or the like. In addition, since the self-sufficiency is imparted in combination with the heat-sealed portion of the gusset portion before and after the bottom gusset portion by the seal pattern, it is easy to handle and has an excellent display effect at stores.

When the filled contents are transferred to another container, the adhesive seal fixing the spout portion to the pouch body is once peeled off with the bottom of the pouch turned up. By cutting off the tip and opening it, and tilting the opening toward the mouth of the container, the contents flow toward the opening of the spout, and the internal pressure causes the bottom surface of the gusset including the spout. The film is spread outward. At this time, the seal pattern of the gusset part of the gusset part on the side where the spout part is not provided, that is, the bottom face from the lower end of the concave part of the seal pattern whose inner side is concave from both sides to the center toward the opening. Since the film forms ridges and spreads, the shape retention of the opening of the spout is improved, and the spout does not become blocked during the pouring.

The width of the spout can be narrowly adjusted in accordance with the viscosity of the contents as long as the spout speed does not become too small, and the spout has a downward vertical surface at the bottom of the pouch. If the diameter of the container to be transferred is relatively large, insert the spout into the mouth of the container and place the body of the pouch on the mouth of the container. Since the objects can be transferred, the transfer operation becomes easy, and the transfer can be performed safely and easily to the end.

According to a second aspect of the present invention, there is provided the refillable pouch according to the first aspect, wherein the spout portion is provided in a shape tapering linearly downward. .

By adopting such a configuration, in addition to the operation and effect of the invention described in the first aspect, when the contents filled in the pouch are poured out, the spout portion is expanded in a funnel shape. The shape retention of the opening can be further improved.

According to a third aspect of the present invention, the gusset portion on the side where the spout is not provided is heat-sealed with a V-shaped seal pattern having an obtuse inside. The refill pouch according to claim 1 or 2, wherein

By adopting such a configuration, in addition to the functions and effects of the invention described in claim 1 or 2, when transferring the contents filled in the pouch to another container, as described above. When the film at the spout spreads to both sides due to the internal pressure of the contents, V
Since a sharper ridgeline is formed from the lower end of the character shape toward the opening at the tip of the spout, the shape retention of the opened spout can be further improved.

According to a fourth aspect of the present invention, there is provided the refillable pouch according to any one of the first to third aspects, wherein an easy-opening means is provided at the spout.

It is preferable to provide a cutout line at the opening position of the spout by printing or the like, but an easy-opening means can be further provided at this portion. As the easy-opening means, other than the notch often used in ordinary pouches, a half-cut line by laser light irradiation, or a method of laminating a uniaxially stretched film in a laminated film of a pouch (in this case, the uniaxially stretched film is , The stretching direction is used so as to match the opening direction of the bag), furthermore, there is a method of sticking a cut tape or the like, and these may be used alone, for example, a notch and a half cut line, Alternatively, they can be used in an appropriate combination such as lamination of a notch and a uniaxially stretched film.

As the notch, a one-shaped or V-shaped notch is generally used, but the shape is not particularly limited, and any shape having a pointed portion in the cutting direction can be used. When the half-cut line is provided, the half-cut line is not limited to a linear half-cut line, and may be provided with an intermittent half-cut line such as a perforated shape. 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.

By adopting such a configuration, in addition to the functions and effects of the invention according to any one of claims 1 to 3, when opening the spout, tools such as scissors are not required, and hands are not required. With only this, the tip of the spout can be easily cut off at the desired position, and the spout can be opened.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention, such as a film used for a refill pouch of the present invention and a method for manufacturing a pouch, will be described. The film used for producing the refill pouch of the present invention is mainly a laminated film mainly composed of plastics, but is not particularly limited, for example, a known laminated film used for various liquid pouches and the like. Any of them can be used, and a suitable laminated film can be freely selected and used according to the use conditions such as the kind of the content to be filled and the presence or absence of a heat treatment after the filling. As a typical configuration example of the laminated film that can be used for the refill pouch of the present invention, the following configuration is exemplified.

(1) ON film / adhesive / L-LDPE
Film (sealant layer) (2) ON film / adhesive / uniaxially stretched HDPE film / adhesive / L / LDPE film (sealant layer) (3) ON film / adhesive / uniaxially stretched PP film / adhesive / L·LDPE Film (sealant layer) (4) ON film / adhesive / uniaxially stretched PP film / adhesive / aluminum foil / adhesive / L / LDPE film (sealant layer) (5) ON film (silica or alumina vapor deposited layer) / adhesion Agent / Uniaxially stretched HDPE film / Adhesive / L·LDPE
Film (sealant layer) (6) ON film / anchor coat layer / co-extrusion (HDPE layer / L-LDPE layer) (the sealant layer is L-LDPE layer) (7) ON film / anchor coat layer / co-extrusion Coat layer (HDPE layer / LDPE layer) / adhesive / L-LDP
E film (sealant layer) (8) PET film / adhesive / (aluminum deposited layer)
ON film / adhesive / L / LDPE film (sealant layer) (9) PET film / adhesive / aluminum foil / adhesive / ON film / adhesive / L / LDPE film (sealant layer) (10) PET film / adhesive Agent / 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.

For example, depending on the use of the bag, thin paper can be laminated on an intermediate layer such as inside the base film on the surface of the laminated film. However, in that case, PET film, ON film, PP film, P
It is preferable that the paper is laminated so as to be sandwiched between moisture-proof materials such as an E-film, since the lack of water resistance of the paper itself can be compensated. By laminating the paper, the rigidity of the laminated film can be increased and the whiteness can be increased, so that the form stability and printing effect of the pouch can be improved, and the design can be improved.

In the above configuration, the ON film has 2
Axial stretched nylon film, L / LDPE is linear low density polyethylene, HDPE is high density polyethylene, LDP
E is low density polyethylene, PP film is polypropylene film, PET film is biaxially stretched polyethylene terephthalate film, EVOH film is ethylene-
The saponified vinyl acetate copolymer film and the CPP film refer to an unstretched polypropylene film. 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 construction of the laminated film, the ON film and the PET film provide the pouch with mechanical strength and printability as a base film, and the uniaxially stretched HDPE film and the uniaxially stretched PP film are stretched in the stretching direction. Is used so as to match the tearing direction when the pouch is opened, whereby the tearing directionality can be further stabilized. An aluminum foil, an aluminum vapor-deposited layer, a silica or alumina vapor-deposited layer, an EVOH film, and the like are laminated mainly to improve gas barrier properties.

As the sealant layer, L·LDP
Two types of examples, E film and CPP film, are given.
L-LDPE film is excellent in heat seal stability and content resistance, such as stress cracking resistance to surfactants, and CPP film is excellent in heat resistance and low odor. It is suitable for packaging contents.

In the sealant layer, in addition to the above, depending on the content 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, an 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 Excellent in hot sealability, such as the refill pouch of the present invention, such as between the gusset part of the body and the bottom, in the sealant layer of the pouch with a step due to the difference in film overlap in the heat seal part Is suitable in that the generation of pinholes due to the loss of the seal can be prevented. Furthermore, by using a blend of the copolymer and an olefin elastomer, the heat fluidity of the sealant layer is improved, and the generation of pinholes due to the steps can be more effectively prevented.

Next, a method for manufacturing the refill pouch of the present invention, which is manufactured using the above-described laminated film, will be described. In the refill pouch of the present invention, the wall film and the bottom film, the laminated film of the same configuration may be used, but since the bottom film does not require much rigidity, its thickness may be slightly reduced. As a result, it is possible to reduce the level difference due to the difference in the thickness of the film of the heat seal portion at the same time as the cost advantage, so that the stability of the heat seal can be improved.

In addition, the bag making is performed by using a conventional bag making machine for a standing pouch, and a seal pattern for heat sealing the gusset portion at the front and rear of the bottom gusset portion is provided on the side where the spout portion is extended. And, on the other side, produced in a shape corresponding to each, and a trimming device for forming a spout portion, a notch, a punching device for providing easy-opening means such as a half-cut line, The bag can be manufactured by appropriately adding a laser beam irradiation device (for a half-cut line) or the like.

In particular, in the heat sealing of the bottom gusset portion, since the sealing pattern is different between the pleated portion on the side provided with the spout and the pleated portion on the side not provided with the spout, they are separately provided. Although it is necessary to heat seal, it can be performed without any problem by dividing into a plurality of sections and heat sealing.

[0030]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below more specifically with reference to the drawings. However, the present invention is not limited to these drawings.

FIG. 1 shows a first embodiment of a refill pouch according to the present invention.
FIG. 2 is a front view showing the configuration of the embodiment. The refill pouch 100 shown in FIG. 1 has a bottom portion having a gusset portion 3, that is, a bottom film 2 inward between lower portions of two front and rear wall films (laminated films) 1 and 1 '. It is formed in such a form that the bottom side film notches 4 and 4 are provided and inserted near the lower ends on both sides thereof, and the folds formed before and after are heat-sealed with a predetermined seal pattern, respectively. At the center of the lower end of one of the gussets 3 (front side in the figure), the film on both sides thereof, that is, the wall film 1 and the bottom film 2 opposed thereto are extended. Then, the outer periphery is heat-sealed by a spout portion sealing portion 9, and the spout portion 8 having a shape projecting downward with the same width is provided.

The seal pattern for heat-sealing the front and rear pleats of the gusset part 3 is such that the front pleats are oblique and straight on both sides from the upper corners on both sides to the bases on both sides of the spout 8. , A seal pattern of the front fold seal portions 5 and 5 connected to the heat seal portions on both sides of the spout 8, and the rear fold portion has a V-shaped rear obtuse seal with an obtuse angle on the inside. 6 is a seal pattern of a part 6.

The body is made of a double-sided wall film 1,
1 'is formed by heat-sealing both side edges of the body 1 with the body seal portions 7, 7. Also, near the tip of the spout 8, a perforated line 10 is provided. A notch 11 is provided. The upper seal portion 12 on the upper part of the pouch is used as an unsealed opening at the stage of bag making in order to use this portion as a filling port for contents, and heat-sealed after filling the contents.

By adopting such a configuration, the entire width of the upper portion of the pouch can be used for the filling port of the contents, so that the contents can be easily filled and heat sealed. In addition, the refill pouch 100 filled with a content such as a liquid has a bottom portion formed in a gusset form, so that the pouch spreads cylindrically, is compact for its capacity, and has one of the bottom gusset portions 3. A narrow width spout 8 protruding downward extends from the pleats. For example, the spout 8 of the refill pouch 200 shown in FIG.
In the same manner as in the above case, the bottom can be flattened by bending it 90 ° inward from its base and fixing it to the other fold (pouch body) with an adhesive seal or the like. In combination with the heat seal part, self-sustainability is provided, easy to handle, and excellent in display at stores.

When the contents are transferred to another container, the adhesive seal is peeled off by turning the pouch 100 upside down, that is, with the bottom thereof facing upward.
After vertically extending the spout 8, the spout 8 can be easily opened by tearing the tip portion along the perforated line 10 using the notch 11 by hand. The opened spout 8 is adjusted to a narrow width within a range in which the spout speed does not become too small in accordance with the viscosity of the contents, so that the pouch 100 is held by hand and the spout 8 is transferred. The contents flow into the spout by inclining toward the mouth of the container where the gusset 3 is to be carried out, and the gusset 3 at the bottom including the spout 8 is expanded in a funnel shape by the internal pressure, and the pouring starts Is done.

At this time, since the rear fold-shaped seal portion 6 of the gusset portion 3 has a V-shaped seal pattern with an obtuse inside, the bottom film 2 extends from the lower end of the V-shape toward the tip end of the spout 8. The ridge line is formed by folding, and a pyramid-shaped expanded portion is formed by the wall film 1 facing the ridge line. Therefore, the shape retention property is good, and after that, the contents can be poured in a state where the spout 8 is inserted into the mouth of the container and the pouch 100 is set upright, and in the middle of the pouring. The contents can be safely and easily transferred to the end without blocking the spout.

FIG. 2 shows a second embodiment of the refill pouch of the present invention.
FIG. 2 is a front view showing the configuration of the embodiment. The refill pouch 200 shown in FIG. 2 is the same as the refill pouch 100 shown in FIG. Only the shape is not a shape protruding downward with the same width, but is changed to a shape that tapers linearly downward as shown in the figure.

When such a configuration is adopted, basically the same operation and effect as the refill pouch 100 shown in FIG. 1 can be obtained, but the shape of the spout 8 of the refill pouch 200 is By changing to a shape that tapers linearly downward, the funnel shape of the spout formed in this portion by the gusset portion 3 and the spout portion 8 at the bottom when the contents are poured out. Since it is formed more clearly, the shape retention is further improved, and the contents can be transferred more safely and easily.

FIGS. 3 to 5 are views for explaining how to use the refill pouch 200 shown in FIG.
After filling the contents into the refill pouch 200 shown in FIG. 2, the spout 8 extended to one of the bottom folds is turned inward by 90 ° so that the pouch 200 can be made independent.
It is a perspective view of the principal part which shows the shape at the time of bending and fixing to the other pleat part with the adhesive seal 13. FIG. 4 is a perspective view of a main part showing the shape when the adhesive seal fixed by bending the spout of the refill pouch shown in FIG. 3 is peeled off and the spout is extended. It is a perspective view showing the shape of the lower part of the pouch 200 before pouring.

FIG. 5 is a side view for explaining the situation when the contents filled in the refill pouch shown in FIG. 2 are transferred to another container. That is, as shown in FIG. 4, after peeling off the adhesive seal fixing the spout portion, extending the spout portion, using the notch 11 for the tip portion of the spout portion 8 with the bottom portion up. Then, the container is cut and opened, the pouch 200 is held by hand, and the spout 8 is inclined toward the mouth of the container 50 to be transferred and started to be poured out. Thereafter, as shown in FIG. When the pouch 200 is set up vertically, the spout 8 is automatically expanded in a funnel shape by the internal pressure of the contents, so that the wall film 1 and the bottom film 2 on both sides are automatically expanded in a funnel shape. Well, the contents can be safely transferred to the end as it is.

When the diameter of the container 50 to be relocated is large, the spout 8 is inserted into the opening of the container, and the bottom of the pouch 200 is placed on the opening of the container so that the contents can be removed. Since the transfer can be performed, the transfer operation can be performed more easily.

[0042]

As described above, according to the present invention, there is no need for a separate spout made of a molded product or the like.
It can be manufactured with the same process as a normal pouch with good productivity, easy to fill the contents, and can be packed compactly for its capacity.
In addition, the pouch filled with the contents can be made independent and easy to handle, and when using the filled contents, even if the contents have a relatively high viscosity, the operation can be easily performed. It is possible to provide an inexpensive pouch for refilling, which can be quickly and safely transferred to another container, and which is excellent in usability.

[Brief description of the drawings]

FIG. 1 is a front view showing the configuration of a first embodiment of a refill pouch of the present invention.

FIG. 2 is a front view showing the configuration of a second embodiment of the refill pouch of the present invention.

FIG. 3 After filling the contents in the refill pouch shown in FIG. 2, a spout extending from one of the bottom folds is bent inward by 90 ° so that the pouch can be made to stand on its own. It is a perspective view of the principal part which shows the shape at the time of fixing to the other pleat part with an adhesive seal.

FIG. 4 is a perspective view of a main part showing a shape when the adhesive seal fixed by bending the spout of the refill pouch shown in FIG. 3 is peeled off and the spout is extended.

FIG. 5 is a side view for explaining a situation when the contents filled in the refill pouch shown in FIG. 2 are transferred to another container.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1, 1 'Wall film 2 Bottom film 3 Gusset part 4 Bottom film cutout part 5 Front fold seal part 6 Back fold seal part 7 Body seal part 8 Outlet part 9 Outlet part seal part 10 Cut-out Line 11 Notch 12 Upper seal part 13 Adhesive seal 50 Container 100, 200 Refill pouch

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Nana Sugimoto, Inventor 1-1-1, Ichigaya-Kaga-cho, Shinjuku-ku, Tokyo Inside Dai Nippon Printing Co., Ltd. (72) Koji Otsuka 1-1-1-1, Ichigaga-cho, Shinjuku-ku, Tokyo No. 1 Dai Nippon Printing Co., Ltd. F term (reference) 3E064 AB25 BC18 EA08 EA23 FA03 HP01 HP02 HS05

Claims (4)

[Claims] 1. A peripheral edge portion is heat-sealed in a bag shape,
A pouch in which the content having fluidity is hermetically sealed and packaged, and the bottom portion is formed in a form having a gusset portion formed by folding and inserting the bottom film inward between the lower portions of the front and rear wall films, Out of the gusseted front and rear folds, the center of the lower end of one of the folds, the film on both sides, that is, the wall film and the bottom film facing it are extended, the outer periphery is heat sealed. A spout portion having a narrow width is provided so as to protrude downward, and both sides of the pleated portion on the side where the spout portion is provided have both sides from upper corners of both sides to bases on both sides of the spout portion. The seal is heat-sealed with a seal pattern that is constricted and leads to the heat seals on both sides of the spout, and the other fold is heat-sealed with a seal pattern that is concave on the inside from both sides to the center. Pouch refill, characterized in that it is sealed. 2. The refill pouch according to claim 1, wherein said spout is formed in a shape tapering linearly downward. 3. The gusseted part on the side where the spout is not provided is heat-sealed with a seal pattern in which the inside has a V-shaped obtuse angle. The refill pouch described in. 4. The refillable pouch according to claim 1, wherein an easy-opening means is provided at the spout.