JP7537201B2 - Pouch - Google Patents

Description

The present invention relates to a pouch suitable for refilling contents.

Standing pouches that can hold contents and stand upright have been widely used as packaging bags. Various improvements to standing pouches have been proposed (see Patent Document 1).

JP 2014-111472 A

On the other hand, some solid foods (e.g., tablets, chocolates, nuts, etc.) are sold in pouches made of plastic film. In particular, when they are stored in standing pouches, they can be displayed in an orderly and attractive manner. Some of these pouches are recycled, but most are disposable. In addition, solid foods are sold individually packaged in small portions using primary and secondary packaging materials, and are characterized by the large amount of packaging material that is discarded.

Therefore, the objective of the present invention is to provide a pouch that is self-supporting and allows easy transfer of the contents into other containers.

In order to solve the above problems, the present invention provides
A pouch having at least a first surface film and a second surface film, and a bottom film sandwiched between the first surface film and the second surface film, the pouch having a top edge, a bottom edge opposite the top edge, and first and second side edges extending between the top edge and the bottom edge,
The bottom film has at least a paper base layer and a sealant layer,
The pouch has a planned tear line formed on the paper base layer on the outer surface side of the bottom film, the planned tear line extending along a direction connecting the first side edge and the second side edge.

The pouch of the present invention further comprises:
The planned tear line may be a perforation that penetrates the paper base layer.

The pouch of the present invention further comprises:
The planned cutting line may be a half-cut line that does not penetrate the paper base layer.

The present invention provides a pouch that is self-supporting and allows easy transfer of the contents into other containers.

FIG. 1 is a plan view showing a pouch according to one embodiment of the present invention. FIG. 2 is an exploded view showing components constituting a pouch according to one embodiment of the present invention. FIG. 2 is a bottom view of a pouch according to one embodiment of the present invention. FIG. 13 shows the pouch in a sealed state. 2 is a cross-sectional view corresponding to line AA shown in FIG. 1. 1 is a bottom view showing a pouch with an opening K formed by breaking the bottom film 3. FIG. This shows the state in which the mouth BK of bottle B is inserted through the opening K in the bottom film 3, and the contents N in the pouch fall and are refilled into bottle B.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.
Fig. 1 is a plan view showing a pouch according to an embodiment of the present invention. Fig. 2 is an exploded view showing a film configuration constituting the pouch according to an embodiment of the present invention. Fig. 3 is a bottom view of the pouch according to an embodiment of the present invention. The bottom view of Fig. 3 shows a state seen from below (the lower edge portion 5 side) in Fig. 1. For convenience of explanation, the plan view of Fig. 1 shows a state in which the bottom film 3 is completely folded and overlapped, and the bottom view of Fig. 3 shows a state in which the folded portion 3a of the bottom film 3 is moved to the lower edge portion 5 side to give a bulge to the space of the storage section 11.

The pouch of the embodiment shown in Figures 1 and 3 shows a pouch in a state before it is filled with contents (a state in which no contents are filled). The pouch of this embodiment is rectangular in plan view and has a bottom gusset portion 9. In this embodiment, the term "rectangle" refers not only to a rectangle with four right-angled corners, but also to a rectangle with four chamfered corners that form an outwardly convex arc shape. In the present invention, the pouch is not limited to a pouch in a state in which no contents are filled, but also includes a pouch in a state in which contents are filled.

<<Components>>
As shown in Fig. 2, the pouch of this embodiment is composed of three members (films): a first surface film 1 having a substantially rectangular shape, a second surface film 2 having the same shape as the first surface film 1, and a bottom surface film 3 having a substantially rectangular shape. The first surface, second surface, and bottom surface of the pouch are composed of the first surface film 1, the second surface film 2, and the bottom surface film 3, respectively. The pouch of this embodiment is formed by sealing (thermally fusing) the three films, the first surface film 1, the second surface film 2, and the bottom surface film 3, at predetermined locations. Furthermore, a male member 21, which is a first member of a fitting tool 20, is joined to the inner surface side of the first surface film 1, and a female member 22, which is a second member of the fitting tool 20, is joined to the inner surface side of the second surface film 2.

As shown in FIG. 2, the bottom film 3 is folded in two and divided into a first portion 3f and a second portion 3g by the fold-in portion 3a. The bottom film 3 has four semicircular cutouts 3b, 3c, 3d, and 3e that cut out the side edges, and the cutouts 3b and 3c, and the cutouts 3d and 3e are provided at positions that correspond when the film is folded in two. The second bottom seal portion 15b, which will be described later, is formed through the cutouts 3b to 3e. In order to stabilize the self-supporting ability of the standing pouch, it is preferable that the distance L1 from the fold-in portion 3a to the lower edge portion 5 of the pouch in the direction perpendicular to the fold-in portion 3a is, for example, 35 mm or more.

＜＜Each sealing part＞＞
As shown in Fig. 1, the pouch of this embodiment includes a first side edge seal portion 16, a second side edge seal portion 17, a first bottom seal portion 15a, a second bottom seal portion 15b, and a fitting 20, and an opening 18 is formed in the upper edge portion 4. In Fig. 1, each seal portion is shown by hatching with diagonal lines. The first side edge seal portion 16 and the second side edge seal portion 17 are formed by sealing and joining the first side film 1 and the second side film 2. The fitting portion 16a of the first side edge seal portion 16 and the fitting portion 17a of the second side edge seal portion 17 are formed by sealing and joining the first side film 1 and the second side film 2 with the fitting 20, respectively. In the fitting portion 16a of the first side edge seal portion 16 and the fitting portion 17a of the second side edge seal portion 17, the fittings 20 are also welded to each other. The first side edge seal portion 16 is formed to include the first side edge portion 6 (the left end in FIG. 1), and the second side edge seal portion 17 is formed to include the second side edge portion 7 (the right end in FIG. 1). The seal width W1 of the first side edge seal portion 16 and the second side edge seal portion 17 is preferably 5 mm or more and 15 mm or less. The seal width W1 is the width in a direction perpendicular to the direction in which the seal portion extends.

The bottom seal portion 15 is a seal portion formed on the lower edge portion 5 side of the folded portion 3a, and is composed of a first bottom seal portion 15a and a second bottom seal portion 15b. The first bottom seal portion 15a is formed by sealing the first surface film 1 and the first portion 3f of the bottom film 3, and the second surface film 2 and the second portion 3g of the bottom film 3. The second bottom seal portion 15b is formed by directly sealing the first surface film 1 and the second surface film 2.

The fitting part 16a of the first side edge seal part 16 and the fitting part 17a of the second side edge seal part 17 are seal parts for fixing the fitting 20 to the first side film 1 and the second side film 2. The fitting part 16a of the first side edge seal part 16 and the fitting part 17a of the second side edge seal part 17 are sealed so that the first side film 1, the male member 21 of the fitting 20, the female member 22 of the fitting 20, and the second side film 2 are integrated. It is preferable that the fitting 20 is located closer to the lower edge 5 than the unsealing start means 12. Therefore, at least the upper end 20a of the fitting 20 is formed to be located closer to the lower edge 5 than the unsealing start means 12. Note that "closer to the lower edge 5" means that the distance from the lower edge 5 is smaller than the distance from the upper edge 4.

＜＜Bottom gusset section＞＞
A first pleat is formed by the first portion 3f of the bottom film 3 and a portion of the first film 1 corresponding to the first portion 3f of the bottom film 3, and a second pleat is formed by the second portion 3g of the bottom film 3 and a portion of the second film 2 corresponding to the second portion 3g of the bottom film 3. The first pleat and the second pleat form a bottom gusset 9. In the plan view of Figure 1, the first pleat is visible below the fold-in portion 3a.

<<Storage section>>
After the contents are accommodated through the opening 18, the upper edge seal portion 14 is formed at the upper edge sealable portion 14a (above the dashed line) indicated as 14a in Fig. 1, and the pouch is sealed. Fig. 4 shows the sealed state of the pouch. For convenience of illustration, the contents are omitted in Fig. 4. The upper edge seal portion 14 is formed from the first side edge seal portion 16 to the second side edge seal portion 17. The accommodation portion 11 is defined by the inner edge of the first side edge seal portion 16, the inner edge of the second side edge seal portion 17, the inner edge of the first bottom seal portion 15a, and the inner edge of the upper edge seal portion 14.

<<Contents>>
The contents may be various foods, non-foods, etc. In the case of foods, solid foods such as tablets, gummies, chocolates, nuts, etc. may be mentioned.

<<Film details>>
The first film 1, the second film 2, and the bottom film 3 can be made of a laminate film. The laminate film is a laminate including at least a base layer and a sealant layer from the outside. For example, the laminate film is formed by laminating a base layer, a printed layer, other layers, and a sealant layer in this order from the outside. The printed layer and other layers are not essential. The sealant layer is a layer that constitutes the innermost surface of the pouch. The base layer is different between the first film 1 and the second film 2 and the bottom film 3. The bottom film 3 is broken when refilling. Therefore, it is necessary to have a structure that is more easily broken than the first film 1 and the second film 2. Therefore, the base layer of the bottom film 3 is a paper base layer. It is also possible to use a paper base layer as the base layer of the first film 1 and the second film 2.

The base layer of the first surface film 1 and the second surface film 2 is a uniaxially or biaxially oriented plastic film or paper. Examples of the plastic film that constitutes the base layer include polyester films such as polyethylene terephthalate and polybutylene terephthalate, polyamide films such as nylon, and polypropylene films. The thickness is about 10 μm to 50 μm. It is preferable that the base layer is biaxially oriented. Also, a paper base layer can be used as the base layer of the first surface film 1 and the second surface film 2, like the base layer of the bottom surface film 3.

The laminated film may also have multiple substrate layers. The multiple substrate layers may include a first substrate layer and a second substrate layer. The first substrate layer and the second substrate layer may be selected from the above materials in appropriate combination. For example, polyethylene terephthalate may be used as the first substrate layer, which is the outermost layer, and polyamide may be used as the second substrate layer, which is the inner layer (sealant layer side). The second substrate layer is stretched from one side edge to the other side edge. For example, the second substrate layer may be "EMBLEM (registered trademark) NC" manufactured by Unitika Ltd., which contains MXD (metaxylenediamine) having excellent barrier properties. For the second substrate layer, polyester such as "EMBLET (registered trademark) PC" manufactured by Unitika Ltd. or "EMBLET (registered trademark) PCBC" manufactured by Unitika Ltd. may also be used. The first substrate layer and the second substrate layer may be laminated, for example, by a dry lamination method.

A paper base layer is used as the base layer of the bottom film 3. The paper base layer is made of paper that is easier to break than resin. There are no particular limitations on the paper used as the paper base layer of the bottom film 3 as long as it is easy to break, but it is preferable that the paper has a basis weight of 30 g/ ^m2 or more and 120 g/ ^m2 or less. If the basis weight is less than 30 g/ ^m2 , there is a problem that the paper cannot be stably processed when printing or making cuts during processing. In addition, if the basis weight exceeds 120 g/ ^m2 , there is a problem that the paper has a strong elasticity when inserted between the first surface film 1 and the second surface film 2, making it difficult to fold.

The printing layer is provided to display the product contents, to impart an aesthetic feel, and to display cut portions. The printing layer is formed from printing ink containing a binder and a pigment. The sealant layer is disposed on the side of the laminated film that will be the innermost side when the film is made into a pouch. Polyolefin resins such as polyethylene, polypropylene, ethylene-vinyl acetate copolymer, and ethylene-propylene block copolymer can be used as the material for the sealant layer. The thickness of the sealant layer is preferably within the range of 20 to 200 μm, and more preferably within the range of 30 to 130 μm. It is preferable that the sealant layer is unstretched.

The laminated film may include other layers. The other layers may be provided on the outside of the base layer, or may be provided between the base layer and the sealant layer. As the other layers, appropriate ones are selected according to the required functions, such as water vapor and other gas barrier properties, light shielding properties, etc. For example, when the other layer is a gas barrier layer, a vapor deposition layer of a metal such as aluminum, a metal oxide such as aluminum oxide, or an inorganic oxide such as silicon oxide is provided. The vapor deposition layer may be laminated on the base layer, or may be vapor-deposited on the sealant layer. Alternatively, a metal foil such as aluminum may be provided. In addition, a resin layer having gas barrier properties, such as ethylene-vinyl alcohol copolymer (EVOH), polyvinylidene chloride resin (PVDC), or aromatic polyamide such as nylon MXD6, may be provided. Each layer can be laminated using a dry lamination method, a melt extrusion method, or the like.

The method for laminating the base layer, paper base layer, sealant layer, and functional layer is not particularly limited, and any known lamination method can be used as appropriate. For example, a so-called dry lamination method in which the layers are bonded together using an adhesive may be used, or an extrusion lamination method may be used.

The laminated film may have an antistatic function to prevent powder or other contents from adhering to the inner surface of the film. This makes the laminated film a packaging material with an antistatic function. An antistatic layer can be added by kneading an additive with an antistatic function into the film.

As an example of the first surface film 1 and the second surface film 2, a laminated film having a structure of printed layer/pure white paper (basis weight 40 g/ ^m2 )/WL/ALM 7 μm/DL/linear low density polyethylene (LLDPE) 30 μm can be used as an example of using paper as the base layer. Such a laminated film can be obtained as follows. First, printing is performed by gravure printing or the like on pure white paper having a basis weight of 40 g/ ^m2 , which is the base layer. Then, an aluminum foil (ALM) having a thickness of 7 μm, which is the functional layer (barrier layer), is prepared, and the aluminum foil (ALM) is bonded to the surface of the pure white paper opposite to the printed surface by wet lamination (WL). Furthermore, an LLDPE film having a thickness of 30 μm, which is the sealant layer, is bonded to the surface of the aluminum foil (ALM) by dry lamination (DL).

As an example of the bottom film 3, a laminated film having a structure of printing layer/fine paper (basis weight 52.3 g/ ^m2 )/polyethylene (PE) 30 μm can be used. Such a laminated film can be obtained as follows. First, printing is performed by gravure printing or the like on fine paper with a basis weight of 52.3 g/ ^m2 , which is the paper base layer. Then, a corona discharge treatment is performed on the surface of the fine paper opposite to the printed surface, and then a 30 μm thick polyethylene resin, which is the sealant layer, is laminated by extrusion lamination on the corona discharge treated surface.

As another example of the bottom film 3, a laminated film having a structure of a printing layer/fine paper (basis weight 52.3 g/m ² )/polyethylene (PE) 10 μm/ALM 7 μm/AC/polyethylene (PE) 10 μm/low density polyethylene (LDPE) 30 μm can be used. Such a laminated film can be obtained as follows. First, printing is performed by gravure printing or the like on fine paper having a basis weight of 52.3 g/m ² as a paper base layer. Then, a corona discharge treatment is performed on the surface opposite to the printed surface of the fine paper, and then an aluminum foil (ALM) having a thickness of 7 μm is bonded to the corona discharge treated surface by extrusion lamination using a PE resin having a thickness of 10 μm. Furthermore, an anchor coat (AC) layer is formed on the surface of the aluminum foil (ALM), and a sealant layer of LDPE resin having a thickness of 30 μm is laminated by extrusion lamination using a PE resin having a thickness of 10 μm.

<<Method of opening>>
In this embodiment, an opening means is formed between the fitting 20 and the upper edge 4. The opening means is composed of an easy-open line 13 and an opening start means 12. The opening start means 12 is a cut and is provided in the first side edge seal portion 16 and the second side edge seal portion 17. The opening start means 12 may be a notch. These opening start means may be provided in only one of the first side edge seal portion 16 and the second side edge seal portion 17. The easy-open line 13 is a line extending from the first side edge seal portion 16 to the second side edge seal portion 17. The easy-open line may be a half-cut line that penetrates the base layer and does not penetrate the sealant layer. The half-cut line may be formed using a blade or by laser processing. The easy-open line 13 may be a line that extends continuously or intermittently. The easy-open line 13 may also be provided so as to extend from the first side edge 6, which is one side edge of the pouch, to the second side edge 7, which is the other side edge.

In this embodiment, the easy-to-open line 13 is realized by a half-cut line. Here, a half-cut line means a line that does not penetrate all layers of the laminated film. In this embodiment, the easy-to-open line 13 is a half-cut line that penetrates only the base layer that is the outermost surface of the laminated film.

<<Cutting line>>
As shown in FIG. 1 and FIG. 3, the bottom film 3 has a planned cut line 27 formed thereon to make the bottom film 3 easier to break. The planned cut line 27 is formed on the paper base layer on the outer surface side of the bottom film 3 so as to extend along the extension direction of the fold-in portion 3a. The extension direction of the fold-in portion 3a is the direction connecting the first side edge portion 6 and the second side edge portion 7. In this embodiment, it is also the direction along the upper edge portion 4 and the lower edge portion 5. The position of the planned cut line 27 is not particularly limited as long as it is a position where the bottom film 3 is easy to break, but it is preferable to form it at a position close to the center of the bottom film 3. In this embodiment, the planned cut line 27 is formed from the inner edge of the first side edge seal portion 16 to the inner edge of the second side edge seal portion 17. However, the planned cut line 27 does not necessarily have to be formed from the inner edge of the first side edge seal portion 16 to the inner edge of the second side edge seal portion 17, and may be a part of the section therebetween. Furthermore, the planned cutting line 27 is formed at a position that is farthest from the lower edge portion 5 when the bottom film 3 is folded in half. When the bottom film 3 is folded exactly in half by the fold-in portion 3a, the fold-in portion 3a and the planned cutting line 27 will approximately overlap.

The intended cutting line 27 is not particularly limited and may take any form as long as it makes it easier to tear the bottom film 3. In this embodiment, it is also possible to use a simple perforation in which the cut portion, which is a slit, and the uncut portion, which is the portion not cut, are connected in a single straight line. The length of the cut portion, the length of the uncut portion, the ratio of the length of the cut portion to the uncut portion, etc. can be set appropriately taking into account the material of the bottom film 3, etc.

By forming the planned cutting line 27 on the paper base layer, it becomes possible to efficiently tear the bottom film 3 with a small amount of force. The planned cutting line 27 can have various forms other than perforations as long as it extends along the extension direction of the fold-in portion 3a. For example, it can be a half-cut line that does not penetrate the paper base layer. Regardless of the form of the planned cutting line 27, it is preferable to form a visible dashed line or the like on the surface of the bottom film 3 along the extension direction of the fold-in portion 3a by printing or the like, and to clearly indicate that it is easy to tear along the dashed line (for example, by displaying a "cut line" or the like).

<<Fitting Tool>>
Next, the fitting tool 20 will be described. As shown in Figs. 1 to 3, in the pouch of this embodiment, a fitting tool 20 for fitting together is formed along the upper edge 4 at a position close to the upper edge 4. In this embodiment, the fitting tool 20 has a band-like shape in a plan view. As shown in Fig. 1, the fitting tool 20 is provided close to the upper edge 4 in a direction along the upper edge 4, from the first side edge 6 to the second side edge 7. In this embodiment, the longitudinal direction of the fitting tool 20, which is band-like in a plan view, is provided so as to be parallel to the upper edge 4.

Figure 5 is a cross-sectional view corresponding to line A-A shown in Figure 1. As shown in Figures 1 and 5, the pouch according to this embodiment has a freely openable and closable fitting 20 near the upper edge 4, which is made up of a first member and a second member that fit together. In this embodiment, the male member 21 is described as the first member and the female member 22 as the second member, but the female member 22 may also be the first member and the male member 21 as the second member.

As shown in FIG. 5, the male member 21 has a first base 21a and a male fitting portion 21b on one side of the first base 21a, and the other side of the first base 21a is joined to the inner surface of the first surface film 1. The female member 22 has a strip-shaped second base 22a and a female fitting portion 22b on one side of the second base 22a, and the other side of the second base 22a is joined to the inner surface of the second surface film 2. In FIG. 1, in the portion where the fitting 20 overlaps with the first side edge seal portion 16 and the second side edge seal portion 17, the male member 21, which is the first member, and the female member 22, which is the second member, are welded together with the first side edge seal portion 16 and the second side edge seal portion 17.

The fitting 20 formed along the upper edge 4 can be used as a zipper and functions as an opening and closing means for opening and resealing the storage section 11. The joining surface of the fitting 20 is not limited to that shown in FIG. 5, and the first base 21a may be joined to the inner surface of the second surface film 2, and the second base 22a may be joined to the inner surface of the first surface film 1.

The material of the fitting 20 can be a resin compatible with the sealant layers of the first film 1 and the second film 2 of the pouch. As shown in FIG. 5, the fitting 20 is composed of a male member 21 and a female member 22, and the male member 21 is heat-sealed to the first film 1, and the female member 22 is heat-sealed to the second film 2. During heat sealing, a heat shield (not shown) is interposed between the male member 21 and the female member 22 to prevent thermal fusion between the male member 21 and the female member 22. In the example shown in FIG. 1 and FIG. 5, an example in which the fitting 20 is used as the opening/closing means is described, but other known opening/closing means may be used as long as it can open and close the opening of the storage section.

<<Production method>>
Three laminated films, a first film 1, a second film 2, and a bottom film 3, each including a base layer and a sealant layer, are prepared as long continuous sheets. The base layer of the bottom film 3 must be a paper base layer. An easy-open line 13 is formed on the outermost base layer of the first film 1 and the second film 2, which are not opposed to each other. Furthermore, the male member 21 and the female member 22 of the fitting 20 are respectively joined to the innermost sealant layer of the first film 1 and the second film 2, which are opposed to each other. Meanwhile, a planned tear line is formed on the bottom film 3 along the longitudinal direction of the bottom film 3. Next, the bottom film 3 is folded by a folding portion 3a along the conveying direction and sandwiched between the first film 1 and the second film 2.

Then, a seal portion that will later become the bottom seal portion 15 is formed by heat sealing along the longitudinal direction (conveyance direction) of the continuous sheet, and the bottom film 3 is joined to the first surface film 1 and the second surface film 2. Next, seal portions that will later become the first side edge seal portion 16 and the second side edge seal portion 17 are formed by heat sealing along a direction intersecting the longitudinal direction (conveyance direction) of the continuous sheet. This joins the first surface film 1 and the second surface film 2. Next, the continuous sheet is cut with a cutter along a direction intersecting the longitudinal direction (conveyance direction) of the continuous sheet to separate it into individual pouches.

From this state, the process moves to the filling process, where the contents are filled from the opening on the upper edge 4 side, and then the upper edge 4 side is heat sealed to form a seal that will later become the upper edge seal portion 14. This allows the contents to be contained, and a sealed pouch like the one shown in Figure 4 is obtained.

<<How to use the pouch>>
The pouches containing the contents are distributed as products to the market, displayed in stores, etc., and delivered to end consumers. The consumer starts opening the pouch from the opening initiation means 12, such as a cut. Specifically, the consumer grasps the upper and lower sides of the opening initiation means 12 and applies forces in opposite directions to enlarge the cut. When further force is applied, cuts are made along the easy-open line 13 in layers other than the base layer of the first surface film 1 and the second surface film 2, and the portion of the pouch on the upper edge 4 side of the easy-open line 13 is separated.

An opening is formed by separating the top of the pouch using the opening initiation means 12 and the easy-open line 13. In this state, the contents can be freely removed from the storage section 11. If some of the contents remain, the male member 21 and female member 22 of the fitting 20 can be interlocked to reseal the pouch.

In addition to these general uses, the pouch according to this embodiment can be used in a way that is particularly suitable for refilling. Here, the case of refilling into a bottle will be described. When refilling into a bottle K, the lid of the bottle K is removed, and the bottle K is placed on a flat surface with the mouth BK having the opening facing upward. In this state, a force is applied from the outside to the inside to the first side edge 6 and the second side edge 7 on the bottom side of the pouch according to this embodiment, spreading the bottom film 3. Then, with the bottom film 3 spread, the bottom film 3 is placed against the mouth BK of the bottle B from above, and the pouch is further pushed downward.

Then, the mouth BK of the bottle B pushes back, applying stress to the planned cutting line 27 formed in the bottom film 3. If the planned cutting line 27 is a perforation, cracks will appear in the uncut areas between the cut sections along the cut sections, and eventually the cut sections will connect, causing the planned cutting line 27 in the bottom film 3 to break. That is, the bottom film 3 is pressed from the outer surface to the inner surface, and the cracks continuing from the cut sections will break the bottom film 3. An opening K is then formed in the bottom film 3. Figure 6 is a bottom view of a pouch in which the bottom film 3 has been broken and an opening K has been formed. As can be seen by comparing with Figure 3, the bottom film 3 breaks along the planned cutting line 27 to the first film 1 side and the second film 2 side, creating an opening K between them.

When the bottom film 3 is broken by the mouth BK of the bottle B, the mouth BK of the bottle B passes through the opening K and enters the storage section 11 of the pouch. In this state, the solid contents in the storage section 11 fall into the bottle B through the mouth BK of the bottle B. FIG. 7 is a diagram showing the state in which the mouth BK of the bottle B is inserted through the opening K in the bottom film 3, and the contents N in the pouch fall and are refilled into the bottle B. In the example of FIG. 7, the contents N are spherical (shown as a circle in FIG. 7). In this way, the user can refill the contents simply by pushing the bottom of the pouch toward the mouth BK of the bottle B.

Although the preferred embodiment of the present invention has been described above, the present invention is not limited to the above embodiment and various modifications are possible. For example, in the above embodiment, the pouch is provided with an opening means consisting of an easy-open line 13 and an opening start means 12, and an opening and closing means realized by a fitting 20, and is configured to enable removal of the contents in the same way as a normal pouch. However, it may be a pouch dedicated to refilling, which does not have these opening and opening and closing means and only allows the bottom film 3 to be torn along the planned tear line 27.

In the above embodiment, the pouch is made up of three films, the first surface film 1, the second surface film 2, and the bottom surface film 3, but it may be made up of two or one film. For example, the first surface, second surface, and bottom surface of the pouch may be made up of one film in which the first surface film, the bottom surface film, and the second surface film are connected together, or the first surface, second surface, and bottom surface of the pouch may be made up of a total of two films in which the first surface film, the second surface film, and the bottom surface film are connected together. However, the film that makes up the bottom surface needs to have a paper substrate layer as the substrate layer.

1: First surface film 2: Second surface film 3: Bottom surface film 4: Upper edge 5: Lower edge 6: First side edge 7: Second side edge 9: Bottom gusset 11: Storage section 12: Opening initiation means 13: Easy-open line 14: Upper edge seal section 14a: Upper edge intended seal section 15: Bottom seal section 15a: First bottom seal section 15b: Second bottom seal section 16: First side edge seal section 17: Second side edge seal section 18: Opening 20: Fitting (opening/closing means)
20a: Upper end of fitting 21: Male member 21a: First base 21b: Male fitting portion 22: Female member 22a: Second base 22b: Female fitting portion 27: Planned cutting line L1: Distance from fold-in portion 3a to bottom edge 17 of pouch W1: Sealing width of first side seal portion 16 and second side seal portion 17

Claims (3)

A pouch having at least a first side film and a second side film, and a bottom film sandwiched between the first side film and the second side film, the pouch having a top edge, a bottom edge opposite the top edge, and first and second side edges extending between the top edge and the bottom edge,
The bottom film has at least a paper base layer and a sealant layer,
A cutting line is formed on the paper base layer on the outer surface side of the bottom film, the cutting line extending along a direction connecting the first side edge portion and the second side edge portion ,
The bottom film has a folded portion formed in two,
The pouch , wherein the planned tear line is formed at a position overlapping the fold-in portion . The pouch according to claim 1, wherein the planned tear line is a perforation that penetrates the paper base layer. The pouch according to claim 1, wherein the intended cutting line is a half-cut line that does not penetrate the paper base layer.