JPH11245955A - Pouch for refill - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pouch for refill which is easy to manufacture a bag and to fill the content, excellent in shape stability of the pouch, easy to unseal a sport part during the use, capable of naturally opening the spout part of excellent shape holding property when unsealed, and capable of safely and easily shifting the content to the last portion. SOLUTION: A pouch 110 for refill is formed of standing pouch type, a spout part 6 having a knob piece 8 and a notch 9 is provided on an upper corner part, and a notched part 7 is provided in a side part on the center side of the pouch of the spout part 6. In addition, a curved press line 20 to improve the opening property of the spout part 6 and the shape stability of the pouch is provided from at least the spout part 6 of the pouch 110 to a part in the vicinity of the center part so as to be lapped at the same position of a wall film 5 on each side.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refill pouch in which fluid contents such as liquid, viscous body, powder and the like are sealed and packaged, and the contents are transferred to another container when used. The present invention relates to a refillable pouch having a spout at an upper corner of a pouch and an improved opening so that the contents can be safely and easily transferred to another container such as a bottle when opened.

[0002]

2. Description of the Related Art Conventionally, standing pouches which are self-supporting and have some of the features of a three-dimensional container are mainly used as refill pouches for hermetically packaging contents having fluidity such as liquid, and , So that the contents can be safely transferred to another container when opened, without spilling the contents.
The opening is not cut out of the whole pouch but is formed by cutting out a part such as a corner, or a method of providing a small-diameter spout in a part of the upper part of the pouch. The method of attaching the spout to the upper part of the pouch by heat bonding was adopted.

[0003]

However, the method of attaching a separate spout made of a plastic molded article to a part of the upper part of the pouch requires an additional manufacturing process, and the spout itself becomes expensive. Since the attached empty pouch is thicker, the cost of storage and transportation is also expensive, and furthermore,
When filling the contents, for example, the number of empty pouches stacked in the feeder section of the filling machine is also greatly reduced, and it becomes necessary for the operator to frequently supply empty pouches.
As a whole, there has been a problem that the cost is increased and the complexity of the steps and operations is increased.

[0004] In the method of providing a small-diameter spout at a part of the upper part of the pouch, the operability and safety when transferring the contents to another container can be improved to some extent. When discharging, it is difficult to open the outlet of the spout, and the flow is not stable during pouring, especially when the remaining amount is low,
The pouch spout is easily blocked, and if the pouch is pressed and pushed out, the contents may jump out and spill outside, and there is still a problem in terms of ease of transfer and safety.

The present invention has been made in order to solve such a problem, and an object of the present invention is to eliminate the need for a separate spout of a molded article or the like, and to provide a similar pouch as a normal pouch. The product can be manufactured with high productivity in the process, the contents can be easily filled, and at the time of use, simply cut off the tip of the spout at the corner of the upper part of the pouch or in the vicinity thereof, so that the spout can be easily opened. An object of the present invention is to provide an inexpensive pouch for refilling, which can be safely and easily transferred to the end even for a bottle having a small opening and a small diameter, and which has excellent usability and high productivity.

[0006]

The above objects can be attained by the present invention described below. That is, the invention described in claim 1 is a refillable pouch of a standing pouch type in which a spout is provided at an upper corner portion and a content having fluidity is hermetically sealed therein. At least from the opening position of the spout portion to the vicinity of the center of the wall film, a curved pressing rule for improving the opening property of the spout is provided so as to overlap the same position of the front and rear two wall films. It consists of a refill pouch characterized by being refilled.

According to a second aspect of the present invention, the curved pressing rule passes from the opening position of the spout to the vicinity of the center of the wall film and toward the upper corner opposite to the spout. 2. The refill pouch according to claim 1, wherein the pouch is provided in a U-shape.

In the invention described in claim 3, the curved pressing rule passes from the opening position of the spout portion near the center of the wall film and toward the lower corner portion opposite to the spout portion. 2. The refill pouch according to claim 1, wherein the pouch is provided in an S-shape.

According to a fourth aspect of the present invention, the curved pressing rule passes through the vicinity of the center of the wall film from the opening position of the spout to the lower corner opposite to the spout. A letter-shaped pressing rule, and further provided on the upper part,
2. The refill pouch according to claim 1, wherein the pouch is provided in combination with a curved pressing rule extending from an opening position of a spout portion to an upper central portion from near the center of the wall film.

According to a fifth aspect of the present invention, the curved pressing rule is formed in such a manner that the U-shape passes from the opening position of the spout portion to the vicinity of the center of the wall film and to the upper corner opposite to the spout portion. And a combination of an inverted U-shaped crease provided so that the bottoms of the U-shape are in contact with each other under the U-shaped crease. The pouch for refilling according to claim 1.

The invention according to claim 6 is characterized in that the curved pressing rule is provided in a shape protruding outward from the inside of the wall film of the pouch. It consists of the refill pouch described in any of the above. The above-described curved pressing rule can be easily provided by, for example, a hot embossing method using a male mold and a female mold, and in a section before the wall film on both sides of the pouch is overlapped by the bag making machine. By incorporating an embossing device, it can be provided in-line with bag making.

According to a seventh aspect of the present invention, there is provided the refillable pouch according to any one of the first to sixth aspects, wherein an easy-opening means is provided at the spout. The easy-opening means, in addition to the notch often used in ordinary pouches, a half-cut line by laser light irradiation or the like, or a direction substantially perpendicular to the edge line of the edge provided by mechanical means. A group of elongated and small scars (for example, disclosed in JP-A-61-142159), and a method of laminating a uniaxially stretched film in a pouch laminated film (in this case, the stretching direction of the uniaxially stretched film is determined by a spout portion. Are laminated so as to coincide with the opening direction of), and these may be used alone.
For example, a notch and a uniaxially stretched film may be used in appropriate combination such as lamination or a half-cut line. In addition, as the notch, a one-shaped or V-shaped notch is usually used, but the shape is not particularly limited, and any shape having an acute angle portion in a cutting direction can be used. Also, the half-cut line is not limited to a linear half-cut line, and may be provided by an intermittent half-cut line such as a perforated line.

Since the refill pouch of the present invention has the above-described structure, the pouch filled with the contents is self-supporting, easy to handle, and excellent in appearance. In addition, a spout is provided at a corner of the upper part of the pouch, and a curved pressing rule is formed on the wall film of the pouch at least from the opening position of the spout to the vicinity of the center of the wall film. Because it is provided so as to overlap the same position on the two wall films, when transferring the contents to another container, just cut off the tip of the spout and open it, without applying any force by hand. Also, the force due to the volume and weight of the contents is transmitted to the spout, the creases on both sides of the spout bend outward, the spout opens naturally,
From the opening to the vicinity of the center of the pouch, the pouch similarly swells along the pressing rule, thereby forming a discharge path for the contents.
Furthermore, since this press rule is easy to bend and the shape retention of the opening is improved, it is possible to prevent the spout from being blocked during the pouring.

In such a refill pouch, usually, after the spout is opened, the upper corner portion opposite to the spout is bent diagonally toward the center of the pouch, and this portion is manually supported from below. Since the contents are transferred in this manner, the bent portion of the upper corner portion serves as a support, so that the shape of the opened spout is further improved, and the spout can be reliably prevented from being blocked. Therefore, the contents can be safely and easily transferred to another container without spilling the contents out.

According to a second aspect of the present invention, in the refill pouch according to the first aspect of the present invention, a curved pressing rule provided on the wall film is added as described in each of the above. It is configured by changing the shape to add a part. Each of these press rules has a shape corresponding to a crease generated in the wall film due to the swelling of the pouch due to the swelling of the pouch when the pouch is filled with the contents and sealed by a degassing seal.

Accordingly, by providing the pressing rule having such a shape, the pressing rule in the vicinity of the spout also has the effect of improving the opening property of the spout and the shape retaining property as described above. As a whole, including the creases of other parts, the swelling shape of the pouch due to the contents is stabilized, the shape retention of the pouch itself is improved, and the contents can be poured out smoothly. It also has the effect of reducing wrinkles in the vicinity of the bulging portion, which has occurred regularly, and improving the appearance.

The invention described in claim 6 is the first invention.
In the refill pouches of the inventions described in the above-described embodiments, the curved pressing rule provided on the wall surface film is provided in a shape projecting outward from the inside of the film.
By adopting such a configuration, a larger space is created between the creases of the wall film on both sides of the pouch. Particularly, at the spout portion, when the tip is cut off and opened, the pouch is flat. The air enters the interior more smoothly when placed on top, and the spout opens naturally by the force of the contents.

According to a seventh aspect of the present invention, there is provided the refillable pouch according to the first to sixth aspects, wherein an easy-opening means is provided at the spout. Claim 1 by adopting the configuration.
In addition to the functions and effects of the inventions described in (1) to (6), when opening the spout portion, tools such as scissors are not required, and only by hand,
The spout can be easily opened at a desired position to open the spout.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of a film used for producing a refill pouch of the present invention and a bag making method thereof will be described. First, the film used for manufacturing 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 Can be used. From these, suitable ones can be freely selected and used according to the use conditions such as the type of contents to be packaged and the presence or absence of heat treatment after filling. Specific examples of the configuration of the laminated film that can be preferably used include the following.

(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 vapor deposition layer) / adhesive / Uniaxially stretched HDPE film / adhesive / L / LDPE film (sealant layer) (6) ON film / anchor coat layer / co-extrusion coat layer (HDPE layer / L / LDPE layer) (sealant layer is L / LDPE layer) ) ON film / anchor coat layer / coextrusion coat layer (HDPE layer / LDPE layer) / adhesive / L-LDP
E film (sealant layer) (8) PET film / adhesive / aluminum foil / adhesive / ON film / adhesive / L / LDPE film (sealant layer) (9) PET film / adhesive / aluminum foil / adhesive / ON film / adhesive / CPP film (sealant layer) (10) PET film / adhesive / ON film / adhesive /
Aluminum foil / adhesive / L / LDPE film (sealant layer) (11) PET film / adhesive / ON film / adhesive /
Aluminum foil / adhesive / CPP film (sealant layer) (12) 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, the ON film is a biaxially stretched nylon film, the L / LDPE is a linear low density polyethylene, the HDPE is a high density polyethylene, the LDPE is a low density polyethylene, the PP film is a polypropylene film, and the PET film is biaxially stretched. A polyethylene terephthalate film and an EVOH film indicate a saponified ethylene-vinyl acetate copolymer film, and a CPP film indicates a non-stretched 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, ON
Films and PET films are used as base films to impart mechanical strength and printability to pouches,
By using the film and the uniaxially stretched PP film so that the stretching direction matches the tearing direction when opening the pouch, the directionality of the tearing can be further stabilized. Then, an aluminum foil, a silica vapor-deposited layer, an EVOH film, and the like are laminated to provide gas barrier properties. In addition, as the sealant layer, two examples of an L-LDPE film and a CPP film have been described. However, the L-LDPE film has heat sealing stability and content resistance, such as stress cracking resistance to a surfactant. The CPP film is excellent in heat resistance and low odor, and is suitable for packaging of contents requiring these properties.

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 acid 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. It is excellent in hot sealability, and is suitable for a sealant layer of a pouch having a step due to a difference in film overlap with a heat seal portion such as a standing pouch in that the occurrence of pinholes due to seal missing 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 producing a refill pouch of the present invention produced using the above-described laminated film will be described. As described above, the refill pouch of the present invention seals and packages contents such as liquid, and when using the contents, safely and easily transfers the contents to small containers such as bottles. As such, the form of the pouch is formed in the form of a standing pouch, and a spout is provided at the upper corner, and when the tip of the spout is cut off and opened, the spout is naturally opened and opened. From the opening position of the spout to the vicinity of the center of the pouch wall film, the shape corresponding to the swelling line of the pouch by the contents is improved so that the shape of the spout is improved and it is not blocked during transfer. In order to reduce irregular wrinkles caused by the swelling of the pouch as much as possible and improve the appearance,
It is configured by additionally providing a curved pressing rule corresponding to the bulge line of the pouch.

Since such a refill pouch has a main body part of a standing pouch type, it can be manufactured basically using a conventional bag making machine for a standing pouch. However, these are different from ordinary standing pouches in that they have a spout in the upper corner and a curved pressing rule on the wall film on both sides of the pouch. The device can be easily manufactured by incorporating a device, that is, a trimming device for providing a spout portion, an embossing device for processing a creasing rule, and the like into a bag making machine for standing pouches.

[0027]

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 the drawings of the embodiments (FIGS. 2 to 6).
However, the present invention is not limited to this. Further, the same reference numerals are used for the parts having the same name and shape in different drawings.

FIG. 1 is a reference drawing used for describing the refill pouch of the present invention. A filling content of a liquid is filled in a standing pouch type refill pouch provided with a spout at a corner of an upper part of the pouch. FIG. 7 is a view showing the shape of main creases generated on a wall film of a pouch when the bag is sealed by a degassing seal. 2 to 6 are front views each illustrating the configuration of an embodiment of the refill pouch of the present invention. However, each of the upper heat seal portions is heat sealed after the content is filled.

In FIG. 1, pouch 100 for refilling
Is a packaging bag in the form of a standing pouch.
Is formed in a gusset form in which the film is folded inward according to a conventional method, and a semicircular notch is provided near the lower end on both sides of the film folded inward. It is formed. The main body portion of the pouch 100 is formed by heat-sealing both side edges of the front and rear wall film 5 with the body heat seal portion 3.

At the upper corner of the pouch 100, an upwardly directed spout 6 having a tab 8 on the side is provided.
It is formed by the upper trimming including the notch 7 and the upper heat seal 4. In addition, a cut line having a shape obtained by extending the lower line of the knob 8 by about 2 mm toward the outlet 6 is provided on the side of the pouch center side of the outlet 6.
A notch 9 for opening the spout 6 is formed.

Refill pouch 100 having such a shape
Is filled with a liquid content, and the upper heat seal part 4 is degassed and sealed, and the pouch 100 swells back and forth by the volume and weight of the content, and the cross section is from the bottom to the substantially central part in the height direction. Are spread out in an elliptical shape. And pouch 100
Since the upper part of the airbag is degassed and sealed, it is substantially flat without swelling.

Therefore, a slanted portion is formed between the bulged portion and the flat portion of the pouch 100, and U-shaped curves A and B as shown in FIG. I do. In addition to this, fine wrinkles are generated irregularly, but they are not constant and will be omitted. The shapes and height positions of the curves A and B are not necessarily constant because they slightly vary depending on the rigidity of the pouch wall film 5 and the filling amount of the contents.
This generally occurs.

Also, such a refill pouch 100
Can set the size of the spout according to the mouth of the container where the contents are transferred, so that when transferring the contents, it is possible to increase the safety to prevent it from spilling outside to some extent . However, since the upper heat seal portion 4 is sealed by the degassing seal, the upper portion of the pouch 100 (curve B)
In the upper part), the front and rear wall films are perfectly adhered to each other, and even if the tip of the spout 6 is cut off at the cutting line 10 (opening position) using the notch 9 and opened, it is easy to open. Do not open.

Therefore, when the contents are transferred, for example, the folding line 11
Is bent toward the center of the pouch 100 at the part, and while supporting this part from below by hand, the notch 7 is applied to the mouth of the container to be transferred, and the pouch 100 is tilted to push out the contents so as to push out the contents. Need to be opened. Therefore, if the pushing force is too strong, there is a danger of the contents jumping out and spilling out of the container, and even during the transfer, if the inside is in a decompressed state, the opening is easily closed,
The operation of pushing out the contents again becomes necessary.

Therefore, in the refill pouch of the present invention,
As shown in FIGS. 2 to 6 below, the form of the pouch is formed in the form of a standing pouch, and a spout portion is provided at an upper corner portion thereof, and at least an opening position of the spout portion near the center of the wall film. , A curved pressing rule for improving the opening property of the spout is provided so as to overlap at the same position on the front and rear two wall films.

FIG. 2 is a front view for explaining the structure of one embodiment of the refill pouch of the present invention, and corresponds to the structure of one embodiment of the refill pouch according to the first aspect of the present invention. That is, in FIG. 2, the refill pouch 110 is
The form itself is a packaging bag of a standing pouch type, like the refill pouch 100 of the reference diagram shown in FIG. 1, and has a knob 8 and a notch 9 on the side at the upper corner. An upwardly-facing spout 6 has a slightly protruding shape, and an upper portion including a cutout 7 is trimmed.
It is formed by the upper heat seal portion 4. Then, the wall film 5 of the pouch 110 is moved from the opening position of the spout 6 (the position of the cut line 10) to the wall film 5.
In the vicinity of the center portion, a curved pressing rule 20 for improving the spout opening property is provided so as to overlap the same position of the front and rear two wall films 5.

By adopting such a configuration, the refill pouch 110 filled with a liquid content, and the upper heat seal portion 4 is degassed and sealed, is self-supporting,
It is easy to handle and excellent in appearance, and when transferring the contents to another container, the tip of the spout 6 is gripped with a finger and the piece 8 is torn in the lateral direction to cut the notch 9 as a starting point. It is easily torn along 10 and the spout 6 can be opened.

At this time, from the opening position of the spout portion 6 of the pouch 110 to the vicinity of the center of the wall film 5, a curved pressing rule 20 for improving the opening property of the spout is formed.
Since it is provided so as to overlap the same position of the front and rear two wall films 5, there is a space between the pressing rules 20,
There is no close contact, and the air enters smoothly inside, and at the same time, the creases 20 are naturally bent and spread by the force of the contents, and the spout is opened. Such a ruled crease 20 is easy to form a crease, and the crease 20 is formed by manually folding the creases 20 on both sides of the spout portion to form a substantially square opening having good shape retention. can do. In addition, since the curved pressing rule 20 has a shape in which the spout side half of the crease line A shown in FIG. It also has the effect of improving the flow to the spout and reducing irregular wrinkles in this part and improving the appearance.

Therefore, after the opening of the spout, the upper corner opposite to the spout 6 is bent toward the center of the pouch 110 at the fold line 11, and this portion is cut while supporting it from below by hand. By applying the notch 7 to the mouth of the container to be replaced and gradually tilting the pouch 110,
The contents can be smoothly poured out, and the spout can be safely and easily transferred to the end without closing the spout.

The refill pouch 120 shown in FIG.
It corresponds to the configuration of one embodiment of the refill pouch of the invention described in claim 2, and in the configuration of the refill pouch 110 shown in FIG. Only the shape of the crease 20 is determined by changing the shape of the crease 21, that is, the U extending from the opening position of the spout 6 to the vicinity of the upper corner portion on the opposite side of the spout 6 from the center of the wall film 5. This is a configuration provided by changing to a character-like curve. The shape of the curved press rule 21 is based on the shape of the crease A shown in the reference diagram of FIG. 1 described above, and the tip of the crease A on the spout side is extended to the opening position of the spout portion 6. It is equivalent to the shape which was made.

By adopting such a configuration, in addition to the operation and effect described for the refill pouch 110 having the configuration shown in FIG. 2, the form stability of the upper portion of the pouch after the content is sealed is further improved. In addition, a refillable pouch having a better appearance can be obtained.

The refill pouch 130 shown in FIG.
It corresponds to the configuration of one embodiment of the refill pouch of the invention described in claim 3, and in the configuration of the refill pouch 110 shown in FIG. 2, a curved pouch provided on the front and rear wall films 5. As shown in the figure, only the shape of the crease 20 is changed from the opening position of the spout 6 to the wall film 5.
Of the S-shaped pressing rule 22 which passes through the vicinity of the center portion of FIG. Such an S-shaped pressing rule 22
Is the upper half of the refill pouch 1 shown in FIG.
It has the same shape as the press ruled line 20 provided on the base 10, and the lower half thereof has a shape adapted to the swelling of the pouch due to the contents.

Therefore, by adopting such a configuration, in addition to the operation and effect described for the refill pouch 110 having the configuration shown in FIG. And the central portion is formed in a diagonal shape substantially parallel to the folding line 11, so that when the contents are poured out, the folding line 1
When the upper corner of the pouch is bent toward the center of the pouch in step 1, the swelling of the body of the pouch is stabilized, and the effect of improving the flow of the contents to the spout is obtained.

The refill pouch 140 shown in FIG.
It corresponds to the configuration of one embodiment of the refill pouch of the invention described in claim 4, and has an S-shape provided on the front and rear surfaces of the wall film 5 in the configuration of the refill pouch 130 shown in FIG. Only the shape of the pressing rule 22 is changed and provided like the pressing rule 23 shown in the figure.
The pressing rule 23 is provided above the S-shaped pressing rule 22 provided on the refill pouch 130 shown in FIG. 4 and further above the center of the wall film 5 from the opening position of the spout 6. This is a configuration in which a curved pressing rule reaching the center is additionally provided. The pressing rule added to the upper portion has a shape in which the upper end of the spout side half of the U-shaped curve shown by the fold line B in the reference diagram of FIG. 1 is extended to the opening position of the spout portion 6.

Therefore, by adopting such a configuration, in addition to the operation and effect described in the refill pouch 130 having the configuration shown in FIG. 4, the entire press rule 23 is prevented from bulging the pouch 140 due to the contents. It is a suitable shape,
At the same time that the form stability of the pouch 140 is further improved, and at the opening position of the spout, two creases are added on both sides, so that the opening becomes substantially hexagonal in cross section and approaches a circle, so that the contents can be poured out. It will be easier to do.

The refill pouch 150 shown in FIG.
It corresponds to the configuration of one embodiment of the refill pouch of the invention described in claim 5, and in the configuration of the refill pouch 120 shown in FIG. Only the shape of the pressing rule 21 is changed and provided like the pressing rule 24 shown in the figure.
In this pressing rule 24, an inverted U-shaped pressing rule is further added below the U-shaped pressing rule 21 provided on the refill pouch 120 shown in FIG. 3 so that the U-shaped bottoms contact each other. This is the configuration provided. This inverted U-shaped pressing rule may be provided in a shape in which the foot-shaped portions on both sides divide the width of the pouch 150 by approximately three or a position slightly closer to the outside, so that the pouch bulges. It is preferable in that it is suitable and can obtain a good appearance and a rib effect.

By adopting such a configuration, in addition to the operation and effect described for the refill pouch 120 shown in FIG. 3, the refill pouch 150 also has a portion below the center in the height direction. Reverse U to fit pouch bulge
The letter-shaped press rule is provided in a well-balanced manner.
The morphological stability of the whole 50 is improved, and the appearance is also excellent.

As described above, in the refill pouch according to the embodiment shown in FIGS. 2 to 6, the bent line 11 is printed on the bent line 11 so that the user can use the bent line 11 without fail. It is preferable to display the bend, and furthermore, a crease may be provided so that the bend can be easily performed, and the bend line 11 may be heat-sealed in a linear or spot shape. The portion above the line 11 may be heat-sealed in a triangular shape.

[Evaluation Test] Refill pouches 110, 120, 130, 140, and 100 shown in FIGS.
150 as Examples 1, 2, 3, 4, and 5, respectively.
A test pouch was prepared with the following laminated film and dimensions. (Structure of laminated film) ON film (15 μm thickness)
/ Adhesive / Uniaxially stretched PP film (25 μm thickness) / Adhesive / Aluminum foil (9 μm thickness) / Adhesive / L·L
DPE film (sealant layer, thickness 70 μm) Each test pouch was prepared by using the above laminated film in common for the wall surface film and the bottom film.

(Dimensions of Pouch) (1) The external dimensions were 150 mm in width and 230 mm in length (excluding the spout). (2) The height of the folded portion at the bottom was 40 mm, and the bottom heat-sealed portion was heat-sealed with a corresponding boat-shaped seal pattern. (3) The left and right body heat seal portions were heat sealed with a seal width of 5 mm. (4) The spout is 12m long from the top of the pouch body
m and a width of 30 mm (excluding the tabs, dimensions including 5 mm on both sides of the heat-sealed portion). The knob was 10 mm long and 7 mm wide, and was provided in a shape protruding laterally on the center side of the pouch above the spout. Also,
The notch was provided with a one-character notch having a length of 2 mm in a shape extending the lower line of the knob toward the spout. (5) The cutout portion beside the spout portion was provided in a curved shape as shown in the figure, with the deepest portion having a depth of 20 mm and the maximum portion having a width of 30 mm from the upper end of the pouch body. (6) The upper heat-sealed portion was heat-sealed so that the seal width was approximately 5 mm except for the knob portion. The curved pressing rule of the wall film was a male rule width of 1.7 mm, and provided in the shape shown in FIGS. Then, a pouch having a configuration excluding only the curved pressing rule of the wall film from the above configuration was produced, and a pouch of a comparative example was obtained.

Each of the pouches of Examples 1 to 5 and the pouch of the comparative example, which were prepared as described above, was filled with 500 ml of a liquid detergent for kitchen as a content, and sealed with a degassing seal. After storage for a week, the pouches are compared and evaluated for form stability (appearance), and then the opening of the spout when the tip of the spout is cut off and opened (opens naturally or can be easily opened) ) And the shape retention of the opening when the contents were transferred to a plastic bottle having a diameter of 24 mm (whether or not the opening was closed during pouring) was examined.

As a result, the pouch of the comparative example was slightly inferior in the form stability (appearance) of the pouch, the opening of the spout was poor, and the shape of the opening was inferior. On the other hand, the pouches of Examples 1 to 5 are slightly different from each other, but compared with the pouches of the comparative example,
The pouch has good shape stability, and the opening of the spout is good when the spout is opened (it opened naturally or could be easily opened with a small internal pressure). The shape retention of the part was also good, and the contents could be safely and easily transferred to the end without closing the spout during the pouring.

[0053]

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 ordinary pouches with good productivity, the contents can be easily filled, and the pouches after filling and sealing the contents have good self-sustainability and form stability (appearance). By cutting off the tip of the spout provided at or near the upper corner, the spout with excellent shape retention can be easily opened. The present invention is advantageous in that a refillable pouch that is inexpensive and has excellent usability can be provided with high productivity, and can be safely and easily transferred to the end without spilling the material outside.

[Brief description of the drawings]

FIG. 1 is a reference diagram for explaining a refill pouch of the present invention, in which a standing pouch-type refill pouch having an outlet at an upper corner portion is filled with a liquid content and deaerated. It is a figure which shows the shape of the main bending line which generate | occur | produces in the wall surface film of a pouch when it seals with a seal.

FIG. 2 is a front view illustrating the configuration of a first embodiment of a refill pouch according to the present invention.

FIG. 3 is a front view illustrating the configuration of a second embodiment of the refill pouch of the present invention.

FIG. 4 is a front view illustrating the configuration of a third embodiment of a refill pouch according to the present invention.

FIG. 5 is a front view illustrating the configuration of a fourth embodiment of a refill pouch according to the present invention.

FIG. 6 is a front view illustrating the configuration of a refillable pouch according to a fifth embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Bottom part 2 Bottom heat seal part 3 Body heat seal part 4 Upper heat seal part 5 Wall film 6 Injection part 7 Notch part 8 Knob 9 Notch 10 Cut line 11 Fold line A, B Fold lines 20, 21, 22 , 23,24 Pressed crease 100,110,120,130,140,150 Refill pouch

Continuation of the front page (72) Inventor Seiichiro Komoda 1-1-1 Ichigaya Kagacho, Shinjuku-ku, Tokyo Dai Nippon Printing Co., Ltd.

Claims (7)

[Claims] 1. A standing pouch-type refill pouch having a spout at an upper corner portion and having a fluid content sealed therein, wherein at least the spout is provided on a wall surface film of the pouch. From the opening position to the vicinity of the center of the wall film, a curved pressing rule for improving the opening property of the spout is provided so as to overlap the same position of the front and rear two wall films. And refill pouch. 2. The curved pressing rule is provided in a U-shape from the opening position of the spout portion to the vicinity of the center of the wall film and toward the upper corner portion opposite to the spout portion. The pouch for refilling according to claim 1, characterized in that: 3. The curved pressing rule is provided in an S-shape from the opening position of the spout portion to pass near the center of the wall film and toward the lower corner portion opposite to the spout portion. The pouch for refilling according to claim 1, characterized in that: 4. An S-shaped scoring rule passing from the opening position of the spout portion toward the lower corner portion opposite to the spout portion through the vicinity of the center of the wall film.
2. A method according to claim 1, further comprising a combination with a curved pressing rule extending from an opening position of the spout portion to a central portion higher than the vicinity of the center of the wall film. Refill pouch. 5. A U-shaped pressing rule, wherein the curved pressing rule passes from the opening position of the spout portion to the vicinity of the center of the wall film and goes to the upper corner opposite to the spout portion. 2. The refill according to claim 1, wherein a combination is provided below the U-shaped pressing rule with an inverted U-shaped pressing rule provided such that U-shaped bottom portions are in contact with each other. For pouch. 6. The refillable pouch according to claim 1, wherein the curved pressing rule is provided in a shape protruding outward from the inside of the wall film of the pouch. 7. The refillable pouch according to claim 1, wherein an easy-opening means is provided at the spout.