JP2000006991A - Refilling pouch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To manufacture a refilling pouch for manufacturing a bag thereof easily and filling a content easily therein, in which an opening of good shape retention properties is formed simply by opening a pouring section, the opening is not blocked at the time of pouring and the superior usability of refilling the content safely and easily without the residue is provided. SOLUTION: A pouring section 5 is formed on a upper corner of a refilling pouch 100 by heat sealing the outer periphery of a refilling pouch, namely the outer periphery formed of an end 6, both side sections 7, 7 and both shoulder sections 8, 8, and notches 9 are formed on both sides of the pouring section, and a cutting line 11 for opening the pouring section 5 is so formed as to pass a top point C of a triangle having a straight line formed as a bottom side and connecting respective middle points B and B' of the inner side lines of the shoulder sections 8 and the side sections 7 on both sides of the pouring section 5 and also having its top angle formed into the right angle and the top point C positioned on a central line A of the pouring section 5, or so formed as to pass below the top point C.

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 contents having fluidity such as a liquid are hermetically packaged, and the contents are transferred to another container at the time of use. A small-diameter spout is provided at the corner of the top of the pouch so that it can be safely and easily transferred to small-diameter containers such as bottles, and the spout does not block during pouring. The present invention relates to a refill pouch having an improved shape.

[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 formed by cutting out a part such as a corner instead of the entire upper part of the pouch, or a method of providing a narrower spout part in a part of the upper part of the pouch, and further, a separate part such as a plastic molded product. The method of attaching the spout to the upper part of the pouch by heat bonding was adopted.

[0003]

However, although the method of forming the opening of the pouch by cutting a part such as a corner portion, not the whole upper part of the pouch, is simple,
The pour direction of the contents is difficult to stabilize, especially when the container to be transferred is a small-diameter container such as a bottle. There was a problem in terms of ease of transfer and safety in some cases.

In addition, a 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, costs the spout itself, and requires an empty pouch to which the spout is attached. This increases the thickness, which increases the cost of storage and transportation.When filling the contents, for example, the number of empty pouches loaded into the There is a problem that the cost is increased as a whole and the steps and operations are complicated, such as the necessity of supplying a pouch.

[0005] The operability and safety when transferring the contents to another container can be improved to some extent by the method of providing a narrow spout at a part of the upper part of the pouch.
When pouring out the contents, the mouth of the spout is difficult to open, and if the viscosity of the contents is a little high, there is a problem that pouring takes a long time. When the lower portion is pressed, the upper portion of the pouch expands due to the internal pressure. As a result, there is a problem that the spout portion breaks and the tip end side of the spout portion is closed, making it difficult to pour.

The present invention has been made in order to solve such a problem, and an object of the present invention is to eliminate the necessity of a separate spout for a molded product or the like, and to provide a similar pouch as a normal pouch. It can be manufactured with high productivity in the process, filling of the contents is easy, and at the time of use, by cutting out the tip of the spout provided in the corner of the upper part of the pouch, the mouth of the spout can be easily opened, Its shape retention is good, and even if the content is relatively high in viscosity, the spout port will not be clogged in the middle, and it is safe and easy to the end even for small-diameter bottles. It is an object of the present invention to provide a refillable pouch which is inexpensive and has excellent usability with good productivity.

[0007]

Means for Solving the Problems In order to solve the above-mentioned problems, the present inventors have made intensive studies particularly on the shape of the spout and the factors of the blockage thereof. Was completed. In general, when providing a small spout portion having a protruding shape formed by heat sealing the outer periphery, such as a corner portion at the upper portion of the pouch, the heat seal portion on the outer periphery of the spout portion has a tip portion,
It is formed by heat-sealed portions on both sides and both shoulders. Then, when transferring the contents filled in the pouch having such a spout to another container such as a bottle, first, the heat seal portion at the tip of the spout is cut off and opened, and then Then, the contents are poured out by inclining the pouch and inserting the spout into, for example, the mouth of the bottle.

At this time, the contents flow toward the outlet of the pouch, and the internal pressure causes the inlet side of the outlet to swell outward, thereby causing a force to open the outlet. Due to the narrow width and long length of the liquid passage, on both sides of the outlet, along the tangent to the midpoint of the inner line of the side and shoulder heat seals, The wrinkles are generated on both sides toward the distal end, and the portion ahead of the intersection of the wrinkles (the outlet side of the spout) is likely to be closed.

The closed position is such that the shape of the spout portion, for example, the inclination and length of the inner line of the heat seal portion on both sides of the spout portion are formed symmetrically with respect to the center line of the spout portion. Although there is a slight difference depending on whether or not it is present, the straight line connecting the shoulders on both sides of the outlet and the middle point of the inner line of the heat seal part on the side is set as the base, and the tip of the outlet is It was found that the vertex angle formed on the side was a right angle and the position of the vertex of the triangle whose vertex was on the center line of the spout became the boundary.

That is, when the cutout line at the time of opening the spout portion passes through or below the vertex of the triangle, the spout portion closes the spout portion due to the fold. The force is removed, and the spout is securely opened. However, when the spout is at a position above the top of the triangle (tip side), the force due to the fold is not removed even when the triangle is opened. It is to be blocked. Therefore, it is preferable that the cutout line of the spout portion passes at least through the vertex of the triangle or a position below the vertex, and the shape of the spout portion is not only the side portion but also the cutout line. Preferably, the shoulder is also formed to have a slope.

The present invention has been made based on such knowledge, and the invention according to the first aspect is characterized in that the peripheral edge portion is heat-sealed in a bag shape and the content having fluidity is obtained. A pouch that is hermetically sealed and provided with a spout at an upper corner of the pouch having an outer periphery, i.e., a tip portion, both side portions, and both shoulder portions that are heat-sealed and project upward. Notch portions are provided on both sides of the spout portion, and a cutout line for opening the spout portion is formed by a shoulder portion on both sides of the spout portion and an inner line of the side heat seal portion. A straight line connecting between the intermediate points of the triangles is formed on the tip side of the spout portion, with the vertex angle being a right angle and the vertex passing through the vertex of the triangle on the center line of the spout portion, or below the vertex. Refill characterized by being set to pass position Consisting of my house. The cutout line as described above can be set by a method such as displaying by printing, using notch and printing, or using notch and half cut line.

By adopting such a configuration, a narrow spout can be provided in accordance with the mouth of the container in which the contents are to be transferred. As described, by cutting out the tip of the spout according to the cut line at a predetermined position, the spout can be easily opened, and the spout can be poured out by inserting the spout into the mouth of the container. Because it can be fixed
Further, the contents can be safely and easily transferred to the end without the clogging of the spout opening portion opened during the pouring.

[0013] According to the invention described in claim 2, the shoulders on both sides of the spout and the inner line of the heat seal part on the side are formed as follows.
Each taper toward the tip of the spout 2
The refill pouch according to claim 1, wherein the pouch is formed in a shape having a step inclination.

By adopting such a structure, in addition to the operation and effect of the invention described in the first aspect, the inner lines of the heat seal portions on both sides of the spout are formed not only on both sides but also on both shoulders. Can also be raised in a C-shape at an angle smaller than the right angle to the center line of the spout, so that when the contents are poured out, the folds generated on both sides of the spout due to internal pressure The angle of wrinkles is reduced, and it is possible to open a longer distance on the tip side of the spout,
Blockage of the spout can be more effectively prevented.

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

The above easy-opening means may be a notch commonly 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, a uniaxially stretched film). The stretched film is used so that the stretching direction coincides with the opening direction of the spout portion). These may be used alone, or, for example, a lamination of a notch, a half-cut line or a uniaxially stretched film. It can also be used in combination as appropriate, such as.

When the half-cut line is provided, 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. In addition, such a half-cut line may be one line, but assuming that the tearing direction is shifted, one half-cut line is provided on each side of the center half-cut line.
A plurality of half-cut lines such as two or two half-cut lines may be provided in parallel. 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.

By adopting such a configuration, in addition to the functions and effects of the invention described in claim 1 or 2,
When opening the spout, no tool such as scissors is required, and the tip of the spout can be easily cut off and opened at a desired position with only hands.

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 the pouch is a standing pouch type pouch.

By adopting such a configuration, in addition to the functions and effects of the invention described in any one of the above-mentioned claims 1 to 3, the pouch is provided with autonomy and, in particular, after the contents are filled. The handling of the pouch is facilitated, the appearance is improved, and the operation for transferring the contents can be easily performed.

According to a fifth aspect of the present invention, the width and height of the wall surface film of the pouch are large from the spout of the pouch to the lower part of the pouch body. The refillable pouch according to any one of claims 1 to 4, further comprising a curved bulging portion whose width and height gradually decrease downward.

By adopting such a structure, in addition to the functions and effects of the invention according to any one of claims 1 to 4, when transferring the contents to another container, the tip portion of the spout portion is used. By simply cutting off and opening, the spout with good shape retention is automatically opened by the bulge at the top including the spout, and after opening, the bulge at the middle part is removed by the force of the contents. Since the inside of the pouch is opened outward from the vicinity of the center of the pouch to the spout from the center of the pouch, the contents can flow smoothly to the spout just by tilting the pouch, Thus, the contents can be safely and easily transferred to the end without closing the spout. In addition, since the lower bulged portion has a substantially vertical ruled shape with a small width and height, especially when the pouch is a standing pouch, the rib effect of the pouch can improve the self-sustainability and form stability of the pouch. it can. Such a bulge may be provided only on one surface of the wall surface film of the pouch, but it is possible to further improve the effect by providing the same position on both surfaces, that is, by providing a symmetrical shape. Can be.

[0023]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments such as a film used for manufacturing a refill pouch of the present invention and a method for manufacturing a pouch will be described below. 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, Either 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. As a representative example of the configuration of the laminated film that can be preferably used, the following configuration can be given.

(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 deposited layer) / adhesion Agent / Uniaxially stretched HDPE film / Adhesive / L ・ LDP
E film (sealant layer) (6) ON film / anchor coat layer / co-extrusion coat layer (HDPE layer / L / LDPE layer) (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 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,
When the film and the uniaxially stretched PP film are used so that the stretching direction thereof coincides with the tearing direction at the time of opening the spout of the pouch, the directionality of the tearing can be further stabilized. An aluminum foil, a silica or alumina vapor-deposited layer, an EVOH film, and the like are laminated to provide gas barrier properties. In addition, as the sealant layer, L-LDPE film and C
Although two types of PP films have been given, the L / LDPE film is excellent in heat seal stability and content resistance, such as stress cracking resistance to surfactants, and the CPP film has heat resistance and low odor. Excellent in nature,
It is suitable for packaging contents that require 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 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 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 of manufacturing the refill pouch of the present invention, which is manufactured using the above-described laminated film, will be described. The shape of the main body portion of the refill pouch of the present invention is not particularly limited, and for example, a three-side seal type, a four-side seal type pouch, a standing pouch, or the like can be suitably used, and the adopted pouch type is used. Accordingly, using the corresponding bag making machine, easy-opening means such as a spout and cutouts on its side, notches, half-cut lines, etc., and the curved shape provided on the pouch wall film In addition to processing equipment for processing additional components such as bulges, such as trimming equipment, punching equipment, heat sealing equipment, laser light irradiation equipment, for example embossing equipment etc. may be incorporated in-line or prepared separately as offline By doing so, a pouch can be easily manufactured.

The bulging height of the bulging portion provided on the wall surface film is not particularly limited, but the uppermost portion including the spout portion has a maximum height of 1 to 7 mm.
Degree is preferable, and about 2 to 5 mm is more preferable. When the height of the highest part is less than 1 mm, the effect on the natural opening property becomes thin, and when the height exceeds 7 mm, there is no necessity and the processing itself becomes difficult, and at the same time, the spout part becomes bulky. It is not preferable because handleability of empty bags and suitability for stacking in a filling and sealing machine are reduced.

The height of the portion other than the upper portion including the above-mentioned spout portion is reduced to about 1 to 0.5 mm, for example, by inclining at an intermediate portion gradually tapering diagonally downward from the spout portion. The lower part can be formed so as to maintain its height. Such a bulging portion can be provided on the wall film of the pouch by a hot embossing method, a vacuum forming method, a compressed air / vacuum forming method, etc., and particularly according to the hot embossing method, the reproducibility of fine patterns is good and stable. The bulge of the shape can be provided with high productivity.

[0032]

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. Further, the same reference numerals are used for the parts having the same names in different drawings. Figure 1,
2 and 3 are front views each illustrating the configuration of an embodiment of the refill pouch of the present invention. In each of the drawings, the upper heat seal portion 12 is an unsealed opening before filling with the content, and the content is filled from this portion, and then heat sealed with a degassing seal or the like to seal. is there.

In FIG. 1, a refill pouch 100 is shown.
Is made in a four-sided sealed pouch. That is, the bottom portion 2 and the body portion are formed by heat sealing the lower edge and the both side edge portions of the front and rear wall film 1 with the bottom heat seal portion 3 and the body heat seal portion 4, respectively. I have. In the upper corner of the pouch 100, the tip 6, the side portions 7, 7 on both sides, and the shoulders 8, 8 are formed in such a shape that they are heat-sealed in a pattern as shown in the figure and project obliquely upward. A spout 5 is provided,
In addition, cutouts 9 and 9 are provided on both sides of the spout 5, and when the upper cutout 9 is formed, a V-shaped notch 10 is provided as an easy-opening means, and a notch is provided on the tip side. The corresponding wide portion of the heat seal is trimmed to form. The notch 10 and the wide portion of the heat seal can be provided on both sides of the spout 5.

The inner lines of the heat seal portions of the side portions 7, 7 on both sides of the spout portion 5 and the shoulder portions 8, 8 are, for example,
The shoulders 8, 8 can be formed so that their extension lines are straight, that is, at an angle of 90 ° with respect to the center line A of the spout 5, but in the present embodiment, moreover, As a preferable shape, both the side portions 7, 7 and the shoulder portions 8, 8 on both sides are formed in a shape having a two-step inclination in a C-shape with respect to the center line A. Further, the two-step inclination is a polygonal line shape in which each intersection is clear, but may be a shape having an R.

The cut-off line 11 connected to the notch 10 is formed by setting a straight line connecting between the side points on both sides of the spout 5 and the middle point B, B 'of the inner line of the heat seal portion at the shoulder as the base. It is formed on the tip end side of the outlet 5, and is provided together with the notch 10 so that the vertex C passes through a position below the vertex C of the triangle on the center line A of the spout 5. The cutout line 11 can be configured by providing a display by printing or a half cut line by laser light irradiation or the like.

By adopting such a configuration, the refillable pouch 100 filled with a liquid content, and the upper heat seal portion 12 is degassed and sealed, has a four-sided seal type main body of the pouch. Although there is no self-sustainability, there is an advantage that bag making is easy and excellent in productivity and that it can be manufactured at low cost.

When the filled contents are transferred to a bottle or the like, the leading end of the spout 5 is torn along the cutout line 11 with the notch 10 as a starting point.
The spout 5 could be easily opened. The opened pouch 100 has cutouts 7, 7 on both sides of the spout 5, and a cut line 11.
Is set as described above, the body of the pouch 100 is supported by hand and tilted toward the spout, and the contents are poured out by inserting the spout 5 into the mouth of the bottle. The spout 5 is well fixed to the mouth of the bottle, and the spout 5 is not blocked by the internal pressure during the pouring of the contents. The contents could be transferred.

The refill pouch 200 shown in FIG.
In the configuration of the refill pouch 100 shown in FIG. 1, the configuration of the main body portion of the pouch is changed to a standing pouch type, and the positions of the notch 10 and the perforated line 11 of the spout 5 provided at the upper corner of the pouch. Is changed to a position where the cutout line 11 passes through the vertex C of the triangle.
From the spout 5 to the bottom of the pouch body,
In the upper part including the spout 5, the width and height are large, and the curved bulge 13 whose width and height gradually decreases diagonally downward is symmetrical to the front and rear two wall films 1. It is provided and configured as described above. The height of the highest portion of the bulging portion 13 at the spout was 4 mm, and the height from the center of the pouch body to the lower portion was 0.8 mm so as to be 0.8 mm.

By adopting such a configuration, the refill pouch 200 is filled with a liquid content and the upper heat seal portion 12 is degassed and sealed because the main body portion is formed in a standing pouch form. The sealed pouch 200 is self-supporting, easy to handle, and excellent in appearance. When the contents are transferred to a bottle or the like, the spout 5 can be easily opened by tearing the tip of the spout 5 from the notch 10 along the cutout line 11. Was.

The opened pouch 200 is self-supporting, so that it can be temporarily placed on the pouch 200 and is easy to handle, and the wall film 1 on both sides extends from the spout 5 to the lower part of the pouch body. Since the bulging portion 13 is provided, the spout 5 is automatically opened with good shape retention at the time of opening, and the pouch 200 is formed by a press-like bulging portion extending from the center to the lower portion of the pouch. It spreads outward, and the fluidity of the contents in the pouch is good, and its form becomes stable. Hereinafter, the operation of transferring the contents can be performed safely and easily as in the case of the pouch 100 shown in FIG. 1 described above, and since the opening property of the spout 5 and the shape retention property are further excellent, There was no problem of blockage of the spout 5 during the pouring. Although not shown in the figure, the bulging portion 13
Even for pouches with a configuration excluding only
The transfer test was carried out in the same manner, but it could be used well without blocking the spout.

The refill pouch 300 shown in FIG.
In the configuration of the refill pouch 200 shown in FIG. 2, only the position of the notch 10 provided on the spout 5 and the position of the cut line 11 are changed to positions where the cut line 11 passes below the vertex C of the triangle. It is configured as follows.

By adopting such a configuration, the refill pouch 300 is excellent in the opening property at the time of opening the spout 5 and has no influence on the opening due to the internal pressure at the time of pouring. As in the case of the refill pouch 200 having the structure shown in FIG. 2, the contents could be safely and easily transferred to the end without the clogging of the spout 5 during the pouring.

[0043]

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, easy to fill the contents, and when the pouch body is a standing pouch type, the pouch becomes more self-supporting, easy to handle and stable in form In addition, it is easy to cut and open the tip of the spout provided at the corner of the pouch when in use, so that the spout is automatically excellent in shape retention. Is opened, so that the spout is not blocked during the pouring, and the contents can be safely and easily transferred to the end without spilling the contents, even for containers such as small-diameter bottles. An effect of being able to provide a refillable pouch that is inexpensive and excellent in suitability for use with good productivity is achieved.

[Brief description of the drawings]

FIG. 1 is a front view illustrating the configuration of an embodiment of a refill pouch of the present invention.

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

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

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Wall film 2 Bottom part 3 Bottom heat seal part 4 Body heat seal part 5 Spout part 6 Tip part 7 Side part 8 Shoulder part 9 Notch part 10 Notch 11 Cutout line 12 Upper heat seal part 13 Swelling part A Spout part Center line B, B 'Intermediate point between shoulder and side of spout C vertex 100, 200, 300 Refill pouch

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Seiichiro Komoda 1-1-1, Ichigaya-Kagacho, Shinjuku-ku, Tokyo Inside Dai Nippon Printing Co., Ltd. (72) Inventor Koji Otsuka 1-chome, Ichigaya-cho, Shinjuku-ku, Tokyo No. 1 Dai Nippon Printing Co., Ltd. F term (reference) 3E064 AB23 BA17 BA26 BA30 BA36 BB03 BC18 EA12 EA23 FA03 HP01 HP02 HS05 HS10

Claims (5)

[Claims] 1. A peripheral edge portion is heat-sealed in a bag shape,
A pouch in which contents having fluidity are hermetically sealed and packaged, and an outer periphery, that is, a tip, both sides, and both shoulders are heat-sealed at an upper corner portion of the pouch, and the pouch protrudes upward. And a cutout portion is provided on both sides of the spout portion. Further, a cutout line for opening the spout portion has shoulders and side portions on both sides of the spout portion. A straight line connecting the intermediate points of the inner lines of the heat seal portion is formed at the tip end side of the spout portion with the bottom as the base, and the vertex passes through a triangle vertex at a right angle and the vertex is on the center line of the spout portion. Or a refill pouch set to pass through a position below a vertex. 2. A shoulder portion on both sides of the spout portion and an inner line of a heat seal portion on a side portion are formed in a shape having a two-step slope tapering toward a tip end of the spout portion. The refillable pouch according to claim 1, wherein 3. The refillable pouch according to claim 1, wherein an easy-opening means is provided at the spout. 4. The refillable pouch according to claim 1, wherein said pouch is a standing pouch type pouch. 5. The pouch wall film has a large width and a high height from an outlet of the pouch to a lower portion of the pouch body, from the spout of the pouch to a lower portion of the pouch main body. The pouch for refilling according to any one of claims 1 to 4, further comprising a curved bulge having a reduced height.