JP2016073329A - Fitting tool and bag body with fitting tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fitting tool which hardly opens from a content side by internal pressure even if the internal pressure of a bag body increases, and a bag body with the fitting tool.SOLUTION: A fitting tool 10 comprises a pair of a belt-like first fitting member 12 and second fitting member 14. The first fitting member 12 comprises a belt-like first base material 16 and a male-side fitting part 18 provided along a longitudinal direction of the first base material 16. The second fitting member 14 comprises a belt-like second base material 20 and a female-side fitting part 22 provided along a longitudinal direction of the second base material 20 and fitted detachably to the male-side fitting part 18. A soft part 24 is formed between a second side edge 20c arranged on a content side of the second base material 20 and the female-side fitting part 22 along the longitudinal direction. A bag body with the fitting tool 10 is also provided.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a fitting tool and a bag body with a fitting tool.

As a bag body for storing food, medicine, miscellaneous goods, etc., a bag main body for storing contents, and a fitting tool attached to an inner surface in the vicinity of the opening of the bag main body so as to be able to open and close the opening. And the bag body with a fitting tool which comprises these is widely used.
As a fitting tool, for example, a first fitting member having a belt-like base material and a male fitting portion provided along the longitudinal direction of the base material, a belt-like base material, and the base material There is a fitting tool having a second fitting member having a female fitting portion provided along the longitudinal direction (for example, Patent Document 1). In the fitting tool, the male fitting portion and the female fitting portion can be detachably fitted. A base material of the first fitting member is attached to one inner surface facing in the vicinity of the opening of the bag body, and a base material of the second fitting member is attached to the other inner surface. By opening and closing the joint, the opening and closing of the opening of the bag body can be repeated.

  However, in the bag body with a fitting tool to which such a fitting tool is attached, for example, by accommodating a large amount of contents in the bag body, the bag body was fitted when the internal pressure of the bag body was very high. The male fitting portion and the female fitting portion may be detached due to the internal pressure and the opening may be opened.

The bag 101 with fitting tool illustrated in FIG. 8 will be described more specifically as an example.
The bag body 101 has a bag main body 130 for storing contents, which is formed into a bag shape by combining film materials 132 and 134, and a fitting tool 110 attached to the inner surface near the opening 136 of the bag main body 130. .
The fitting tool 110 has a pair of strip-shaped first fitting member 112 and second fitting member 114. The first fitting member 112 has a belt-like first base material 116 and a male side fitting portion 118 provided on the first base material 116 along the longitudinal direction. The second fitting member 114 includes a belt-like second base material 120 and a female side fitting portion 122 provided on the second base material 120 along the longitudinal direction. The male-side fitting portion 118 includes a trunk portion 118a that rises from the first base material 116, and a head portion 118b that is larger than the trunk portion 118a formed at the distal end portion of the trunk portion 118a. The female fitting portion 122 includes a first arm portion 122a and a second arm portion 122b that rise in an arc from the second base material 120, and the first arm portion 122a and the second arm portion 122b. Thus, a recess 122c is formed.
As for the fitting tool 110, the 1st fitting member 112 is attached to the inner surface of the film material 132 of the bag main body 130, and the 2nd fitting member 114 is attached to the inner surface of the film material 134 of the bag main body 130. In the bag body 101, the opening 136 can be opened and closed repeatedly by attaching and detaching the male fitting portion 118 and the female fitting portion 122 of the fitting tool 110.

  In the bag body 101, when the internal pressure is increased by accommodating a large amount of contents in the bag body 130, etc., as shown in FIG. 9, the film material 132 and the film material 134 on the contents side spread and are fitted accordingly. The contents side of the first base material 116 and the second base material 120 of the combination tool 110 expands. At this time, the second arm portion 122b of the female side fitting portion 122 opens toward the contents side following the expansion of the second base material 120, and the first arm portion 122a and the second arm portion 122b. The distance between the tip ends of each other increases. As a result, the head portion 118b of the male fitting portion 118 is easily detached from the female fitting portion 122, and the opening 136 of the bag body 101 may be opened.

JP 2003-160147 A

  The present invention provides a fitting that is difficult to open from the contents side due to the internal pressure of the bag body, and a bag with a fitting provided with the fitting.

  The fitting tool of the present invention has a pair of band-shaped first fitting members and a second fitting member, and the first fitting member includes a band-shaped first base material and the first fitting member. A male-side fitting portion of a protrusion provided along the longitudinal direction of the base material, and the second fitting member is a strip-shaped second base material and the second base material Provided on the inner surface of the bag body that contains the contents, and is formed on the bag body. And a fitting that is attached so that the first side edge of the first base material and the first side edge of the second base material are on the opening side. A soft portion is linearly formed along the longitudinal direction between the second side edge of the second base material disposed on the contents side of the bag body and the female side fitting portion. It is characterized by.

  The bag body with a fitting tool of the present invention comprises a bag main body for storing contents, and the fitting tool of the present invention attached to the inner surface of the bag main body, wherein the fitting tool is the first fitting. The first side edge of the base material and the first side edge of the second base material are attached so as to be on the opening side formed in the bag body.

If the fitting of this invention is used, even if the internal pressure of a bag main body will become high, it will be hard to open from the content side with the internal pressure.
Even if the internal pressure of a bag main body becomes high, the bag body with a fitting tool of the present invention is difficult to open from the contents side due to the internal pressure.

It is the perspective view which showed an example of the fitting tool of this invention. It is sectional drawing which cut | disconnected the fitting tool of FIG. 1 in the direction perpendicular | vertical to a longitudinal direction. It is the expanded sectional view which expanded the vicinity of the male side fitting part and female side fitting part in the fitting tool of FIG. It is the front view which showed an example of the bag body with a fitting tool of this invention. It is AA sectional drawing of the bag body with a fitting tool of FIG. It is a perspective view which shows a mode that the bag body with a fitting tool of FIG. 4 was opened. It is sectional drawing which showed a mode that the opening part of the bag body with a fitting tool of FIG. 6 was closed with the fitting tool. It is sectional drawing which showed an example of the conventional bag body with a fitting tool. It is sectional drawing which showed a mode that the contents side of the bag body with a fitting tool of FIG. 8 expanded.

<Fitting tool>
The fitting tool of this invention is a fitting tool attached to the inner surface of the bag main body which accommodates the content so that the opening part formed in this bag main body may be followed. Hereinafter, an example of the fitting tool of the present invention will be shown and described in detail.

As shown in FIGS. 1 and 2, the fitting 10 according to the present embodiment includes a pair of strip-shaped first fitting members 12 and a second fitting member 14.
The first fitting member 12 includes a strip-shaped first base material 16 and a male fitting part 18 of a protrusion provided on the facing surface 16a of the first base material 16 along the longitudinal direction. . The second fitting member 14 is provided along the longitudinal direction on the belt-like second base material 20 and the opposing surface 20a of the second base material 20, and is detachably fitted to the male side fitting portion 18. And a female-side fitting portion 22.
When the fitting 10 is attached to the bag body, the first side edge 16b of the first base material 16 and the first side edge 20b of the second base material 20 are formed on the opening side where the bag body is formed. The second side edge 16c of the first base material 16 and the second side edge 20c of the second base material 20 are attached so as to be on the contents side of the bag body.

The male side fitting portion 18 is provided on the facing surface 16 a of the first base material 16 along the longitudinal direction of the first base material 16. As shown in FIGS. 2 and 3, the male-side fitting portion 18 is provided at the trunk portion 18 a rising from the facing surface 16 a of the first base material 16 and the distal end portion of the trunk portion 18 a, and has a cross section substantially larger than the trunk portion 18 a. It has a semicircular head 18b.
The female side fitting portion 22 is provided on the facing surface 20 a of the second base material 20 along the longitudinal direction of the second base material 20. As shown in FIGS. 2 and 3, the second base material 20 includes a first arm portion 22 a and a second arm portion 22 b that rise from an opposing surface 20 a of the second base material 20 in a circular arc shape, A recess 22c is formed by the first arm portion 22a and the second arm portion 22b.
The male fitting portion 18 and the female fitting portion 22 can be detachably fitted by fitting the head portion 18b of the male fitting portion 18 into the recess 22c of the female fitting portion 22. ing.

  The cross-sectional shape of the male side fitting part 18 and the female side fitting part 22 can repeat opening and closing of the opening part of a bag main body by attaching / detaching the male side fitting part 18 and the female side fitting part 22 mutually. Any known cross-sectional shape may be employed.

On the second base material 20, a soft portion 24 is formed linearly along the longitudinal direction between the second side edge 20 c arranged on the contents side of the bag body and the female side fitting portion 22. Has been.
The soft part 24 is a part that is softer than the part other than the soft part 24 in the second substrate 20.

By forming the linear soft part 24 along the longitudinal direction on the second base material 20, the second base material 20 is easily bent at the soft part 24 part. Therefore, even if the second side edge 20c side of the second base material 20 expands in a state in which the male side fitting portion 18 and the female side fitting portion 22 are fitted, the second base material 20 remains soft. And the shape on the first side edge 20b side is more easily maintained than the soft portion 24 in the second base material 20.
As a result, in the bag body to which the fitting 10 is attached so that the first side edge 20b of the second base material 20 is on the opening side of the bag body, the internal pressure of the bag body increases and the bag body The second base material 20 is bent at the soft portion 24 even when the first side edge 20b side is more easily maintained than the soft portion 24 of the second base material 20 even when the first base edge 20b is spread. As a result, the second arm portion 22b located on the second side edge 20c side of the second base material 20 in the female side fitting portion 22 expands on the second side edge 20c side in the second base material 20. Following movement is suppressed, and the fitting state between the male fitting portion 18 and the female fitting portion 22 is easily maintained.

In this example, the soft portion 24 is continuously formed linearly along the longitudinal direction of the second base material 20. In addition, the soft part 24 is not limited to the aspect formed continuously, For example, you may form intermittently in the shape of a broken line.
As an aspect of the soft part 24, the soft part 24 can be easily formed, and the second arm part 22b of the female side fitting part 22 is difficult to open, and the male side fitting part 18 and the female side fitting part 22 are fitted. From the viewpoint that the combined state is easily maintained, it is preferable that the first base material 16 is continuously formed linearly over the entire length in the longitudinal direction.

The distance d ₁ (FIG. 3) between the soft part 24 and the female side fitting part 22 is preferably 0.1 to 5.0 mm, and more preferably 0.5 to 2.0 mm. If the distance d ₁ of the soft portion 24 is less than the lower limit value, and difficult molding. If the distance d ₁ of the soft part 24 exceeds the upper limit, when the internal pressure is increased, it becomes difficult to bend in the soft portion.
The distance d ₁ between the soft part 24 and the female fitting part 22 means the distance between the edge of the soft part 24 on the female fitting part 22 side and the central axis L of the female fitting part 22. To do.

The width d ₂ (FIG. 3) of the soft part 24 is preferably 0.1 to 5.0 mm, and more preferably 0.5 to 2.0 mm. If the width d ₂ of the soft portion 24 is less than the lower limit, even increasing the internal pressure of the bag body easily suppressed to open the second arm portion 22b of the female engaging section 22, the male side fitting portion 18 And the fitting of the female side fitting part 22 is more easily maintained.

The bending elastic modulus of the soft part 24 is smaller than the bending elastic modulus of the second substrate 20 other than the soft part 24, preferably 150 MPa or less, more preferably 120 MPa or less, and particularly preferably 100 MPa or less. If the flexural modulus of the soft part 24 is less than or equal to the upper limit value, it is easy to suppress the opening of the second arm part 22b of the female side fitting part 22 even if the internal pressure of the bag body increases, and the male side fitting part 18 And the fitting of the female side fitting part 22 is more easily maintained.
Further, the flexural modulus of the soft part 24 is preferably 1 MPa or more, more preferably 5 MPa or more, and particularly preferably 10 MPa or more. If the flexural modulus of the soft portion 24 is equal to or greater than the lower limit value, the second fitting member 14 can be easily molded.
In addition, the bending elastic modulus of the soft part 24 means the value measured by the method prescribed | regulated to JISK7171 using the material which forms the soft part 24. FIG.

The 1st base material 16 is not specifically limited, What is used for the base material of a well-known fitting tool can be used, and it is preferable that it is a laminated | multilayer film. Examples of the laminated film include a film in which a heat-resistant layer and a heat seal layer are laminated from the facing surface 16a side. A barrier layer may be formed between the heat-resistant layer and the heat seal layer.
Examples of the material for the heat-resistant layer include biaxially stretched nylon and biaxially stretched polypropylene.
Examples of the material for the heat seal layer include linear low density polyethylene, unstretched polypropylene, ethylene-vinyl acetate copolymer, and ionomer.
Examples of the material for the barrier layer include polyvinyl alcohol.

The 1st base material 16 may consist of 1 type of resin, and may consist of the resin composition containing 2 or more types of resin.
Moreover, the 1st base material 16 is not limited to a laminated | multilayer film, A single layer film may be sufficient.
Further, the first base material 16 may be added with known additives such as a stabilizer, an antioxidant, a lubricant, an antistatic agent, and a colorant as necessary.

Parts other than the soft part 24 in the 2nd base material 20 are not specifically limited, For example, the same thing as what was mentioned by the 1st base material 16 is mentioned, A preferable aspect is also the same. Parts other than the soft part 24 in the 2nd base material 20 may consist of 1 type of resin, and may consist of the resin composition containing 2 or more types of resin.
Moreover, parts other than the soft part 24 in the 2nd base material 20 are not limited to a laminated | multilayer film, A single layer film may be sufficient.

The material of the soft part 24 may be any material as long as the soft part 24 becomes softer than the part other than the soft part 24 in the second base material 20, and more preferably satisfies the above-described preferable range of the flexural modulus. . The soft part 24 may consist of 1 type of resin, and may consist of the resin composition containing 2 or more types of resin.
As an aspect of the second substrate 20, for example, the soft portion 24 is formed of ultra-low density polyethylene, an elastomer resin, or the like, and a portion other than the soft portion 24 in the second substrate 20 is formed of polyethylene, polypropylene, or the like. An aspect etc. are mentioned.
Further, the second base material 20 may be added with known additives such as a stabilizer, an antioxidant, a lubricant, an antistatic agent, and a colorant as necessary.

  As a material of the male side fitting part 18 and the female side fitting part 22, a well-known thing can be used, for example, the same material as parts other than the soft part 24 in the 1st base material 16 etc. can be used.

(Production method)
It does not specifically limit as a manufacturing method of the fitting 10 of this invention. As a manufacturing method of the 1st fitting member 12, extrusion molding etc. are mentioned, for example. As a manufacturing method of the 2nd fitting member 14, the two-color extrusion molding etc. which combined the material which forms the soft part 24, and the material which forms another part are mentioned, for example.

(Function and effect)
In the fitting tool 10 described above, the soft part 24 is formed along the longitudinal direction between the second side edge 20c of the second base member 20 and the female side fitting part 22. Therefore, even if the second side edge 20c side of the second base material is opened with the male side fitting portion 18 and the female side fitting portion 22 fitted, the second base material 20 is a portion of the soft portion 24. Bend at. Thereby, even if the 2nd arm part 22b side of the 2nd base material opens the 2nd arm part 22b of the female side fitting part 22, it is difficult to follow the movement. Therefore, the movement of the second base member on the second side edge 20c side makes it difficult for the second arm portion 22b of the female side fitting portion 22 to open, and the tips of the first arm portion 22a and the second arm portion 22b. The interval between the parts is difficult to spread, and the fitting state of the male side fitting part 18 and the female side fitting part 22 is easily maintained.
Therefore, in the bag body in which the fitting side 10 is attached to the bag body with the second side edge 20c side of the second base material 20 as the content side, even if the internal pressure in the bag body increases, the internal pressure is increased by the internal pressure. It can suppress that the joint part 18 detaches | leaves from the female side fitting part 22, and an opening part opens.

The fitting tool of the present invention is not limited to the fitting tool 10 described above.
For example, a fitting tool in which a soft portion is linearly formed along the longitudinal direction between the second side edge and the male fitting material in the first base material may be used. In the fitting tool, even if the second side edge side of the first base material is opened, the shape of the first side edge side is more easily maintained than the soft part of the first base material. A side fitting part becomes difficult to fall toward the 2nd side edge of the 1st substrate. Therefore, when the internal pressure of the bag body increases, it is easier to suppress the opening of the opening due to the male fitting portion being detached from the female fitting portion. The preferable aspect of the soft part in the first base material is the same as the preferable aspect of the soft part in the second base material.

  In addition, the number of soft portions formed along the longitudinal direction between the second side edge and the female side fitting portion in the second base material is not limited to one, and may be two or more. May be. For example, it is a fitting tool in which two soft parts are formed in a straight line along the longitudinal direction between the second side edge and the female side fitting part in the second base material. Also good. The same applies to the case where the soft part is formed on the first base material.

<Bag with fittings>
Hereinafter, as an example of a bag body with a fitting tool of the present invention, a bag body with a fitting tool 1 (hereinafter referred to as “bag body 1”) provided with the fitting tool 10 described above will be described.
As shown in FIG. 4, the bag body 1 of the present embodiment has a sealed bag body 30 that contains the contents, and a fitting that is attached to the inner surface of the upper part in the bag body 30 along the lateral direction. The combination 10 is provided.

  The bag body 30 is formed by superimposing the first film material 32 and the second film material 34 and heat-sealing all the peripheral portions 36 thereof, and is in a sealed state. Moreover, the cutting auxiliary line 38 is provided in the bag main body 30 above the fitting tool 10 along the horizontal direction, and the notch 40 is formed in the edge part.

  As shown in FIG. 5, the outer surface 16 d of the first base material 16 of the fitting tool 10 is welded to the first film material 32 of the bag body 30, so that the fitting tool 10 has a second fitting tool 10. The outer surface 20 d of the base material 20 is welded to the second film material 34 of the bag body 30. In addition, in the fitting 10, the first side edge 16 b of the first base material 16 and the first side edge 20 b of the second base material 20 are on the opening side, and the second side of the first base material 16 is the second side. The side edge 16c and the second side edge 20c of the second substrate 20 are attached so as to be on the contents side.

  The shape of the bag body 30 is a rectangle in this embodiment. However, the shape of the bag body 30 is not limited to a rectangle. Further, the size of the bag body 30 is not particularly limited, and may be appropriately selected depending on the contents accommodated in the bag body 30.

The 1st film material 32 and the 2nd film material 34 which form the bag main body 30 should just be what can weld the fitting 10 by heat seal, and are the lamination | stacking which has a sealant layer and a base material layer at least from an inner surface side. A film is preferred.
Examples of the material for the base material layer include biaxially stretched nylon and biaxially stretched polypropylene.
Examples of the material for the sealant layer include linear low density polyethylene, unstretched polypropylene, ethylene-vinyl acetate copolymer, and ionomer.
The laminated film may be provided with a functional layer such as a barrier layer.
Moreover, the 1st film material 32 and the 2nd film material 34 may be a single layer film which consists only of a sealant layer.

The cutting auxiliary line 38 is a line that assists in cutting and opening the upper portion of the bag body 30 relative to the fitting 10. As the cutting auxiliary line 38, for example, from a weakened line or a perforation in which the portion of the cutting auxiliary line 38 in the first film material 32 and the second film material 34 of the bag body 30 is thinner than the other parts. And weakening lines composed of pores formed in a row. Further, the cutting auxiliary line 38 is not limited to the weakening line, and may be a line formed by printing or the like indicating a position to be cut with a scissor or a cutter.
Although the cutting auxiliary line 38 is formed along the lateral direction of the bag main body 30 in the present embodiment, the cutting auxiliary line 38 is not limited to this form, and may be provided inclined with respect to the width direction of the bag main body 30. Good.

The shape of the notch 40 is a triangular shape in this example, but is not particularly limited, and may be a semicircular shape, a linear shape, or the like.
The bag body 1 can be manufactured by a known method except that the fitting 10 is used.

(Function and effect)
The bag body 1 can be opened by forming an opening 42 in the upper portion as shown in FIG. 6 by cutting and removing the upper portion of the bag body 30 along the auxiliary cutting line 38 from the notch 40. . The opening 42 formed in the bag body 1 can be opened and closed repeatedly by attaching and detaching the male side fitting part 18 and the female side fitting part 22 of the fitting 10.
In the bag body 1, since the fitting tool 10 is used, the second base material 20 is easily bent at the soft portion 24 as shown in FIG. 7. Thereby, in the state which fitted the male side fitting part 18 and the female side fitting part 22, even if the internal pressure of the bag main body 30 increases and the 1st film material 32 and the 2nd film material 34 spread, The second base material 20 bends at the soft part 24. Therefore, even if the internal pressure of the bag body 30 increases, the second arm portion 22b of the female side fitting portion 22 does not easily follow the movement of the second film material 34, and does not easily fall toward the contents side. Thus, even if the internal pressure of the bag main body 30 increases, the distance between the first arm portion 22a and the second arm portion 22b of the female side fitting portion 22 is difficult to increase, and the male side fitting portion 18 and the female side fitting portion are not enlarged. Since the fitting state of the joint portion 22 is easily maintained, the fitting tool 10 that closes the opening 42 is prevented from opening from the contents side.

In addition, the bag body with a fitting tool of this invention is not limited to the bag body 1 mentioned above.
For example, the bag body with a fitting tool of the present invention may be a bag body with a fitting tool that includes the fitting tool of the present invention other than the fitting tool 10 as described above.
Moreover, the bag main body of a bag body with a fitting tool is not specifically limited, The bag main body of various forms known as a bag main body of a bag body with a fitting tool is employable. For example, the bag body 1 is a sealed bag body until it is opened using the cutting auxiliary line 38, but may be a bag body with a fitting tool having a bag body in which an opening is formed in advance.

DESCRIPTION OF SYMBOLS 1 Bag body with fitting tool 10 Fitting tool 12 1st fitting member 14 2nd fitting member 16 1st base material 16b 1st side edge 16c 2nd side edge 18 Male side fitting part 20 2nd base material 20b 1st side edge 20c 2nd side edge 22 Female side fitting part 24 Soft part 30 Bag main body 42 Opening part

Claims (2)

Having a pair of strip-like first fitting member and second fitting member;
The first fitting member has a strip-shaped first base material, and a male side fitting portion of a protrusion provided on the first base material along the longitudinal direction,
The second fitting member is provided in a belt-like second base material and the second base material along the longitudinal direction, and is detachably fitted to the male side fitting portion. And
A first side edge of the first base material and a first side of the second base material on the inner surface of the bag main body containing the contents, along an opening formed in the bag main body. A fitting that is attached so that an edge is on the opening side,
A soft portion is linearly formed along the longitudinal direction between the second side edge disposed on the contents side of the bag body in the second base material and the female side fitting portion. A fitting tool characterized by that. A bag main body for storing contents, and the fitting according to claim 1 attached to the inner surface of the bag main body,
The fitting tool is attached so that the first side edge of the first base material and the first side edge of the second base material are on the opening side formed in the bag body. , Bag with fittings.

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