JP2008222287A - Pouch with zipper - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pouch with a zipper, which enables a largely opened shape of an opening part of the pouch to be maintained so that contents can be easily taken out. <P>SOLUTION: The pouch (P) with the zipper is composed of a laminated material (1) in which at least a film base layer (1a) and a sealant layer (1c) are superposed in order of from an outer face side; and the right and left edges and upper and lower edges of the two laminated materials (1 and 1'), which are formed by superposing the sealant layers (1c) together in an opposing state, are heat-sealed in a pouch shape; and a cutoff line (5) and notch parts (n and n) at both ends thereof are provided as an unsealing means for the pouch (P) near the inside of the sealing part of either of the upper and lower edges as the opening part (11) of the pouch (P); and the openable/closable zipper (10) is provided on the inner face near the inside of the cutoff line (5). The pouch (P) with the zipper is characterized in that the zipper (10) is composed of a linear resin having shape memory performance. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a pouch with a chuck. More specifically, the present invention includes a chuck that is excellent in hermeticity that can be resealed and re-sealed, and in particular, the opening of the pouch maintains a shape with a mouth wide open. The present invention relates to a pouch with a chuck that makes it easy to take out the contents.

  Conventionally, as a pouch for storing food, household goods, toiletries, pharmaceuticals, miscellaneous goods, and other items, various devices have been made so that the opening of the pouch can be resealed even after opening. ing. For example, there is a method of attaching a part such as a synthetic resin lock band for re-sealing or a band covered with a synthetic resin to the outside of the pouch and using the part after opening to reseal, In this case, there is a problem that the packaging is bulky, the shape is complicated and the manufacturing cost is increased.

  In recent years, therefore, there has been proposed a pouch with a chuck in which a chuck made of synthetic resin is previously attached to the pouch and can be opened and closed by the chuck even after opening (see, for example, Patent Document 1).

  Such a pouch with a chuck can be resealed and re-sealed and is excellent in sealing performance. However, since the chuck is attached to the inner surface of the pouch body, it is inevitably necessary to heat the laminate material sealant layer used in the pouch body. A material with good sealing properties is selected. For example, low density polyethylene resin (LDPE), linear low density polyethylene resin (L-LDPE), polypropylene resin (PP), etc. are generally widely used.

  However, as shown in FIG. 6, such a chuck made of plastic resin does not have a dead hold property, so that the shape of the opening of the pouch cannot be held with the mouth wide open, and the contents are difficult to take out. There is a problem. In particular, in the case of a general pouch in which the pouch is made of a laminated material composed only of a plastic film and the chuck is not mounted as shown in FIG. 7, the return of the opening is remarkably strong, and the opening is Therefore, it is difficult to take out the contents and the convenience for the user is remarkably impaired.

Prior art documents are shown below.
JP 2003-128088 A

  The present invention is intended to solve such problems of the prior art, and includes a chuck with excellent hermeticity that can be resealed and re-sealed. In particular, the opening of the pouch keeps its mouth wide open. It is an object of the present invention to provide a chucked pouch that retains the shape and facilitates the removal of the contents.

The present invention has been made to solve the above problems, and the invention according to claim 1 of the present invention includes at least a film base layer (1a) and a sealant layer (1c) from the outer surface side. Left and right edge parts and upper and lower edge parts of two laminated materials (1, 1 ') made of a laminated material (1) formed by laminating and overlapping the sealant layer (1c) faces to face each other Is opened in the vicinity of the inside of the seal portion of one end of the upper and lower end edges which are heat-sealed in a pouch shape and becomes the opening (11) of the pouch (P). A pouch with a chuck in which a cut line (5) and notches (n, n) are provided at both ends thereof, and an openable / closable chuck (10) is provided on the inner surface near the inside of the cut line (5) In (P), the chuck (10) has shape memory performance. Be made of Jo resin is reclosable pouch according to claim.

  The invention according to claim 2 of the present invention is the pouch with chuck according to claim 1, wherein the chuck (10) has a male tape body (8) having a male fitting portion (6) having a convex shape and a concave shape. It is a pouch with a chuck characterized by being formed from the female tape main body (9) which has the female type fitting part (7) which carried out.

  The invention according to claim 3 of the present invention is the pouch with a chuck according to claim 1 or 2, wherein the linear resin is made of an ethylene homopolymer or an ethylene / α-olefin copolymer having specific properties. It is a pouch with a chuck.

  The invention according to claim 4 of the present invention is the pouch with a chuck according to any one of claims 1 to 3, wherein the film base layer (1a) is made of a plastic film having linear tearability. It is a pouch with a chuck.

  The pouch with a chuck according to the present invention is composed of a laminated material obtained by laminating at least a film base layer and a sealant layer from the outer surface side, and the right and left of two laminated materials laminated with the sealant layers facing each other. The pouch is unsealed in the vicinity of the inner side of the seal portion at one end of the upper and lower end edges that are heat-sealed in a pouch shape and the upper and lower end edges of the pouch. As a means, in a pouch with a chuck in which a cut line and notch portions are provided at both ends thereof, and a chuck that can be freely opened and closed is provided on the inner surface near the inside of the cut line, the linear resin in which the chuck has shape memory performance As a result, the opening of the pouch maintains the shape with the mouth open, and the contents can be easily taken out.

  Embodiments of the present invention will be described in detail with reference to FIGS.

  FIG. 1 is a plan view showing an embodiment of a pouch with a chuck according to the present invention, FIG. 2 is an enlarged view of a cross section taken along line XX of FIG. 1, and FIG. FIG. 4 is a perspective view showing another embodiment of the unsealed state of the chucked pouch according to the present invention, and FIG. 5 constitutes the chucked pouch according to the present invention. It is a sectional side view which shows one Example of the laminated constitution of laminated material.

  As shown in FIG. 1, the pouch with a chuck according to one embodiment of the present invention is made of a laminated material (1) formed by laminating at least a film base layer (1a) and a sealant layer (1c) from the outer surface side. And the left and right edge portions and the upper and lower edge portions of the two laminated materials (1, 1 ′) laminated with the sealant layers (1c) facing each other are heat-sealed in a pouch shape, and As a means for opening the pouch (P) near the inner side of the seal portion at one of the upper and lower end edges that will be the opening (11) of the pouch (P), In a pouch with a chuck (P) in which a notch (n, n) is provided and a chuck (10) that can be freely opened and closed is provided on the inner surface in the vicinity of the inside of the cut line (5), the chuck (10) Made of linear resin with shape memory performance A zipper pouch.

Thus, it is a four-side seal type pouch (P), and is a laminated material (1, 1 ') formed by laminating at least the base film layer (1a) and the sealant layer (1c) from the outer surface side of the front and rear wall surfaces. An openable / closable chuck (10) made of linear resin having shape memory performance is heated over at least one side of the inner surface in the vicinity of the edge of the upper portion in parallel with the opening direction in the same direction as the opening direction. Fused (heat-sealed) and attached, the outer edge of the outer part is heat-sealed with the upper seal part (2), and the left and right side edge parts are heat-sealed with the side seal parts (3, 3) In addition, a tear line (5) and notches (n, n) are provided between the upper seal part (2) and the chuck (10) as opening means, and the lower part is the contents. Configured as a pouch (P) that opens as a filling port Those were.

  Since the lower opening is used as a filling port for the contents as described above, the lower edge portion is heat-sealed and sealed with the lower seal portion (4) after the contents are filled.

  Next, when taking out the filled contents, the pouch (P) is opened by an opening means provided between the upper seal portion (2) of the pouch (P) and the chuck (10). ) To open.

  Examples of the opening means include (1) a method using a cut line formed by a half-cut line formed by irradiating a laser beam or the like and notches provided at both ends thereof, and (2) an opening instruction line by printing or the like. And (3) a notch provided at both ends of the pouch using an easily tearable film such as a stretched film as the base film constituting the laminated material of the pouch. One method can be selected and used from among the methods based on the part and (4) a method using a cut tape or the like, but a plurality of methods may be used in combination. Among them, a method in which a tear line and notches are provided at both ends thereof and a combination with an easy tear film is preferable.

  In addition, although the said notch part (n) uses many 1-shaped type or V-shaped notches, there is no restriction | limiting in the shape, What is necessary is just a shape which has the pointed part toward the tearing direction. . Also, the half-cut line is not limited to a continuous line-shaped half-cut line, and may be an intermittent half-cut line such as a perforated line or a broken line. Such a half-cut line may be one, but in order to further stabilize the tearing direction, a plurality of half-cut lines such as one each or two on both sides of the center half-cut line are parallel or centered. It can be provided in a shape that converges on the half-cut line.

  Next, the material configuration of the chuck (10) used in the pouch with chuck (10) of the present invention will be described in detail.

  The chuck (10) is not a simple low density polyethylene resin (LDPE), a linear low density polyethylene resin (L-LDPE), a polypropylene resin (PP), or the like as in the past, but a linear shape having shape memory performance. It is made of resin, and more specifically, is a linear resin made of ethylene homopolymer or ethylene / α-olefin copolymer with specific properties, for example, trade name “Techno Lot” manufactured by Mitsui Chemicals, Inc. The plastically deformable material can be preferably used.

  As shown in FIG. 2, the chuck (10) includes a male tape body (8) having a convex male fitting portion (6) heat-sealed to one laminated material (1), and It is composed of a female tape main body (9) having a concave female fitting portion (7) heat-sealed with the other laminated material (1 ′) so as to face each other. And the dissociation is performed by pressing the both from the outside to fit the male fitting part (6) into the female fitting part (7), and the dissociation is performed by the laminated material (1, 1 ′). The male fitting part (6) is detached from the female fitting part (7) by picking the upper part of the wire and pulling it apart on both sides.

  The linear resin can be used for the male tape main body (8) and / or the female tape main body (9). As shown in FIG. 3, the male tape main body (8) and the female tape main body (9) It is preferable to take out the contents because the opening (11) of the pouch (10) can be kept open. Temporarily using the male tape body (8) only and the other female tape body (9) using normal low density polyethylene resin (LDPE) or linear low density polyethylene resin (L-LDPE) As shown in FIG. 4, the opening of the opening (11) is not sufficiently maintained, and it is difficult to take out the contents.

  Since the linear resin (techno funte) is a polyethylene resin, when only the male or female tape main body is used as the linear resin (techno funte), the other tape main body is a polyethylene resin. It is necessary to completely seal the laminate material (1) with the sealant layer (1c).

  Next, each material which comprises the laminated material (1) used for this pouch (P) of this invention is demonstrated in detail.

  The laminate material (1) used for the pouch (P) of the present invention is not particularly limited, but as shown in FIG. 5, at least a film base layer (1a) and a sealant layer (1c) are laminated from the outer surface side. It is composed of the layer structure.

  Examples of the base film for forming the film base layer (1a) include polyesters such as polyethylene terephthalate (PET), polyethylene naphthalate (PEN), and polybutylene terephthalate (PBT), polypropylene (PP), and polystyrene. Polyolefin such as (PS), polyamide (PA) such as nylon-6 and nylon-66, polycarbonate (PC), polyacrylonitrile (PAN), polyimide (PI) and the like can be used as unstretched or stretched films.

  In the base film used for the pouch (P) of the present invention, it is preferable that the base film is made of a film having a linear tearing property in order to open the pouch more linearly. Examples of the film having linear tearability include a uniaxially stretched film stretched in one direction and a biaxially stretched film having different longitudinal and transverse stretch ratios. In the present invention, any film having linear tearability may be used. Absent. In the width direction, it may be stretched to such an extent that it does not shrink or slightly.

  Generally, a plastic film is roughly classified into a stretched film and an unstretched film. The stretched film is oriented by stretching the plastic film in two longitudinal and / or horizontal directions while heating the plastic film to a temperature below the melting point. An unstretched film is an unstretched film that has not been stretched, and has no molecular chain orientation and free molecular motion, and can be bonded by heat melting (heat sealing). The molecular chains of the stretched film are oriented in one direction in uniaxial stretching and in the plane direction in biaxial stretching, and the physical properties of the unstretched film can be improved. In addition, stretching increases stiffness (rigidity), transparency, tensile strength, and shrinkage, and improves gloss, moisture resistance, and barrier properties, but decreases elongation and tear strength.

  As such a film having linear tearability, a biaxially stretched polyethylene terephthalate film (OPET), a biaxially stretched polyamide film (ON), or the like is often used. The film having linear tearability is preferably at least one of a longitudinal (longitudinal) direction [MD (machine direction) direction] and a lateral (transverse direction) direction (TD direction) of the film, preferably It has a performance (easy tearing property) that can be easily torn at least linearly in the MD direction.

  As a biaxially stretched polyethylene terephthalate film (OPET) having linear tearability, for example, polybutylene terephthalate (modified PBT) containing 5 to 20% by weight of polytetramethylene glycol (PTMG) units having a weight average molecular weight of 600 to 4000, A biaxially stretched polyethylene terephthalate film (OPET) produced using a raw material obtained by mixing polyethylene terephthalate (PET) at a ratio of PET / modified PBT = 70/30 to 95/5 (weight ratio) can be exemplified. .

  Next, as the biaxially stretched polyamide film (ON) having linear tearability, for example, aliphatic polyamide (PA) and polymetaxylene adipamide (MXD6) are PA / MXD6 = 80/20 to 95/5. A biaxially stretched polyamide film (ONy) manufactured using raw materials mixed at a ratio of (weight ratio) can be mentioned.

  Next, as a sealant film which forms a sealant layer (1c), it is a film comprised by the innermost surface for sealing laminated material (1) by heat sealing. As such a sealant film, conventionally known thermoplastic resins can be used. Specifically, for example, low density polyethylene resin (LDPE), medium density polyethylene resin (MDPE), high density polyethylene resin (HDPE), linear low density polyethylene resin (L-LDPE), polypropylene resin (PP), Ethylene-propylene copolymer (EP), ethylene / α-olefin copolymer, ethylene-acrylic acid copolymer (EAA), ethylene-methacrylic acid copolymer (EMAA), ethylene-methacrylic acid ester copolymer, Although ethylene-acrylic acid ester copolymer, ionomer resin, ethylene-vinyl acetate copolymer (EVA), etc. can be used, heat seal compatibility with the chuck (10) made of the linear resin (techno funnel) In consideration of the properties, low density polyethylene resin (LDPE), linear low density Ethylene resin (L-LDPE), ethylene - vinyl acetate copolymer (EVA) are preferred.

  The laminated material (1) constituting the chucked pouch (P) of the present invention has various characteristics such as barrier properties and strength characteristics in order to impart resistance to oxygen gas, water vapor, light, etc. to the pouch (P). You may interpose the barrier layer (1b) which has these in the middle of a film base material layer (1a) and a sealant layer (1c).

  Examples of the barrier film for forming the barrier layer (1b) include an aluminum foil, an aluminum vapor-deposited film, a resin film having a thin film of an inorganic oxide (such as silicon oxide and aluminum oxide), and an ethylene-vinyl alcohol copolymer (EVOH). ), Polyvinyl alcohol (PVA), saponified ethylene-vinyl acetate copolymer (EVA), or polyethylene terephthalate (PET), polyamide (PA), polypropylene (PP), etc. However, among these films, inorganic oxides such as silicon oxide and aluminum oxide, which are easy to dispose of after use, are deposited. Using inorganic oxide vapor deposition film It is preferable.

  The support film of the inorganic oxide vapor-deposited film is not particularly limited, but a single film and various laminated films thereof can be used in consideration of processability and physical properties.

  For example, polyesters such as polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polybutylene terephthalate (PBT), polyolefins such as polypropylene (PP) and polystyrene (PS), polyamides such as nylon-6 and nylon-66 Non-stretched or stretched films such as (PA), polycarbonate (PC), polyacrylonitrile (PAN), and polyimide (PI).

  Among these, it is particularly preferable to use a biaxially stretched polyethylene terephthalate film (OPET) having linear tearability arbitrarily stretched in the biaxial direction from the viewpoint of tearability, strength, cost, and the like.

  As the vapor-deposited thin film of the inorganic oxide, it is basically possible to use a metal oxide such as silicon, aluminum, magnesium, calcium, potassium, tin, sodium, boron, titanium, lead, zirconium, An oxide such as yttrium or a mixture thereof may be mentioned.

  In general, it is preferable to use silicon oxide or aluminum oxide from the viewpoint of transparency, physical properties, and productivity.

  As a method of forming such an inorganic oxide vapor-deposited thin film, a vacuum vapor deposition method, a sputtering method, or the like can be used, but the vacuum vapor deposition method is preferable in view of productivity, production cost, and the like.

  Although the thickness of this vapor deposition thin film is suitably selected by the end use of a vapor deposition film, it is preferable to exist in the range of 5-400 nm.

  If the film thickness of the deposited thin film is less than 5 nm, a uniform film cannot be provided. Therefore, sufficient oxygen gas barrier properties and water vapor barrier properties cannot be obtained. If the film thickness exceeds 400 nm, flexibility is lost, bending, pulling, etc. Due to the external factors, cracking and peeling are likely to occur in the deposited thin film, which is not preferable.

  Next, the base film and the sealant film, or the base film, the barrier film, and the sealant film are sequentially laminated by, for example, a dry lamination method, a non-solvent dry lamination method, a hot melt lamination method, an extrusion Known methods such as a lamination method and a sandwich lamination method using the extrusion lamination method can be used as appropriate, and among them, the dry lamination method is preferable in view of the adhesive strength of the lamination.

  As the adhesive used in the dry lamination method, laminate adhesives such as polyurethane, polyacrylic, polyester, epoxy, polyvinyl acetate, cellulose, and the like can be generally used.

  Note that the laminated material may be subjected to gravure printing or the like, in addition to the above configuration, and may include an anchor coating or the like.

  The pouch with a chuck (P) of the present invention made of the laminated material manufactured as described above can be easily and linearly formed in the easy tear direction of the base film having the linear tearing property constituting the laminated material. Can be torn.

  When the pouch with a chuck (P) according to the present invention is manufactured using the laminated material, the laminated material can easily form a base film having a linear tearing property constituting the pouch (P) on the front and back sides of the pouch (P). It is used so that the tear direction is parallel to the opening direction (tear direction) of the bag. At this time, the chuck (10) is substantially parallel to the opening direction (tear direction) on at least one side of the inner surface of the pouch (P) below the opening position of the pouch (P). It is attached over the entire width.

    As described above, the four-side sealed pouch as the chucked pouch (P) according to the present invention has been described. However, the shape of the chucked pouch (P) according to the present invention is not particularly limited. It is possible to use any type of sealed bag, such as a shape, envelope-sealed seal type, center joint seal type (pillow seal type), pleated seal type, flat bottom seal type, or square bottom seal type.

  Hereinafter, the pouch with chuck (P) according to the present invention will be described in more detail with specific examples.

<Example 1>
As shown in FIG. 5, the laminated material (1) of the pouch with a chuck (P) according to the present invention has a biaxially stretched polyethylene terephthalate having a thickness of 12 μm and having a linear tearing property on the film base layer (1a). Using a product name “Emblet PC” film manufactured by Unitika Ltd., which is a film (OPET), through an adhesive layer (not shown) made of a two-component curable urethane adhesive on the back of the OPET, A 7 μm thick aluminum foil as the barrier layer (1b) was laminated by a dry lamination method. Further, a linear low density polyethylene resin having a thickness of 60 μm, which becomes a sealant layer (1c) via an adhesive layer (not shown) made of a two-component curable urethane adhesive on the aluminum foil surface. A film (L-LDPE) was used and laminated by a dry lamination method to produce a laminated material (1) having a layer structure of OPET layer / adhesive layer / aluminum foil layer / adhesive layer / L-LDPE layer. .

  Next, a male tape body (8) having a male fitting part (6) having a convex shape made of a trade name “Techno Roto” made by Mitsui Chemicals in the form of a strip of 4 mm in width × 144 mm in length, A chuck (10) in a state in which a female tape body (9) having a female fitting portion (7) having a concave shape is fitted is inserted between the two laminated materials (1, 1 '). And heat-sealing over almost the entire width in parallel with the opening direction on both sides of the inner surface of the pouch (P) located 20 mm inside the upper edge of the upper part of the pouch (P), The outer edge is heat sealed with a 5 mm wide upper seal (2), and the left and right side edges are heat sealed with a 5 mm wide side seal (3, 3). The upper seal part (2) is located at a position of 15 mm downward from the edge part, and is opened as a half-opening means. A cut line (5) made of a cut line and V-shaped notch portions (n, n) at both ends thereof were prepared, and a pouch with a chuck (P) having a lower portion opened as a filling port for contents was produced.

  Finally, after filling the content from the lower content filling port, the lower edge that was opened as an unsealed opening before filling the content was also heat-sealed with a width of 5 mm, and the lower sealing portion ( A pouch with a chuck (P) having a finished size of 150 mm in width and 160 mm in length as shown in FIG. 1 and sealed in 4) was obtained.

<Example 2>
In Example 1, the product name “Techno Roto” manufactured by Mitsui Chemicals, Inc. is used for the male tape body (8) constituting the chuck (10), and one female tape body (9) A pouch with a chuck (P) was obtained in the same manner as in Example 1 except that a low-density polyethylene resin (LDPE) was used.

  Below, the comparative example of this invention is demonstrated.

<Comparative Example 1>
In Example 1, both the male tape body (8) and the female tape body (9) constituting the chuck (10) are the same as Example 1 except that a normal linear low density polyethylene resin (L-LDPE) is used. Similarly, a pouch with a chuck (P) was obtained.

<Comparative example 2>
A pouch with a chuck (P) was obtained in the same manner as in Example 1 except that the chuck (10) was not attached.

<Evaluation>
Each of the chucked pouches (P) obtained in Examples 1 and 2 and Comparative Examples 1 and 2 was torn and the chuck (10) was opened once, and then its resealability and opening holdability were evaluated. . The results are shown in Table 1.

<Evaluation method>
Resealability is smooth for a male tape body (8) having a convex male fitting portion (6) and a female tape body (9) having a concave female fitting portion (7). It was experimented whether it fits. As a result, when it fitted smoothly, it was set as (circle) (good), and when not fitting smoothly, it was set as x (defect). In Comparative Example 2, since there was no chuck, X was assigned. With respect to the opening holdability, it was observed whether or not the shape was largely held with the opening opened. As a result, ◎ (excellent) when holding the initial wide open state, ○ (good) when holding about half open state, × when holding almost no open state (Defect).

表１には、実施例１〜２、および比較例１〜２で得られた各々のチャック付きパウチ（Ｐ）の再封性、開口ホールド性を評価した結果を記した。

Table 1 shows the results of evaluating the resealability and opening holdability of each of the pouches with chuck (P) obtained in Examples 1-2 and Comparative Examples 1-2.

<Comparison result>
From Table 1, as for resealability, all of Examples 1 and 2 and Comparative Example 1 were good except for Comparative Example 2. In Example 1, the opening holdability was most excellent. Example 2 was inferior to Example 1, but was good. Comparative Examples 1 and 2 were defective.

It is a top view which shows one Example of the pouch with a chuck | zipper which concerns on this invention. It is an enlarged view of the XX line cross section of FIG. It is a perspective view which shows one Example of the unsealed state of the pouch with a chuck | zipper which concerns on this invention. It is a perspective view which shows the other Example of the unsealed state of the pouch with a chuck | zipper which concerns on this invention. It is a sectional side view which shows one Example of the laminated constitution of the laminated material which comprises the pouch with a chuck | zipper which concerns on this invention. It is a perspective view which shows one Example of the unsealed state of the conventional pouch with a chuck | zipper. It is a perspective view which shows the other Example of the unsealed state of the conventional pouch with a chuck | zipper.

Explanation of symbols

P ... Pouch with chuck 1, 1 '... Laminate material 1a ... Film substrate layer 1b ... Barrier layer 1c ... Sealant layer 2 ... Upper seal part 3 ... Side seal Part 4 ... Lower seal part 5 ... Cut line 6 ... Male fitting part 7 ... Female fitting part 8 ... Male tape body 9 ... Female tape body 10 ... Chuck 11 ... opening n ... notch

Claims (4)

  Left and right edges and upper and lower edges of two laminated materials made of a laminated material obtained by laminating at least a film base layer and a sealant layer from the outer surface side, and the sealant layers facing each other Near the inner side of the seal portion of one of the upper and lower edge portions that are heat-sealed in a pouch shape, and as a means for opening the pouch, In a pouch with a chuck provided with a notch portion and further having a chuck that can be opened and closed on the inner surface in the vicinity of the inside of the cut line, the chuck is made of a linear resin having shape memory performance. Pouch.   2. The chuck according to claim 1, wherein the chuck is formed of a male tape body having a male fitting portion having a convex shape and a female tape main body having a female fitting portion having a concave shape. Pouch.   The pouch with a chuck according to claim 1 or 2, wherein the linear resin comprises an ethylene homopolymer or an ethylene / α-olefin copolymer having specific properties.   The pouch with a chuck according to any one of claims 1 to 3, wherein the film base material layer is made of a plastic film having linear tearability.

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