KR100819549B1 - Fitting member and packaging bag body having fitting member - Google Patents

Abstract

The packaging bag body with the fitting port is a fitting part having a male part and a female part, and has a joint part in which the distal end part of the unopened side flange part of the male part and the female part side is joined. It has projections in-between, and the thickness of the junction part is 10 micrometers or more and 100 micrometers or less, The thickness of a projection shape is 200 micrometers or more and 2 mm or less, and the thickness of a junction part is thinner than the thickness of a flange part, and the thickness of a protrusion shape Is a packing bag body with a fitting hole which is thicker than the thickness of the flange portion and the fitting hole is fused to the packing bag body and formed by umbilical cord.

Description

FITTING MEMBER AND PACKAGING BAG BODY HAVING FITTING MEMBER with fittings and fittings

According to the present invention, even if the contents are liquid, the liquid does not leak from the opening side of the fitting until the consumer uses, and when the contents are taken out, the joint part can be easily separated to open the packaging bag. The present invention relates to a fitting bag and a packing bag body with a fitting hole which can be repeatedly fitted and reopened after opening.

This application claims priority based on Japanese Patent Application No. 2004-235302 for which it applied in Japan on August 12, 2004, and uses the content here.

By forming a pair of fitting holes made of male and female at the opening of the bag, a packing bag body with a fitting opening for opening and closing is used in many fields such as food, medicine, and sundries. However, when the fluidity of the content was high, it was impossible to completely prevent only only the sealing property of a fitting opening. Therefore, in order to completely prevent the leakage of the contents, a peelable film is formed between the fitting sphere and the disc film, or the peeling layer is formed on the fitting sphere or the disc film. (Iii) was formed, and the correspondence which further formed the peelable junction part in the unopened side of a fitting opening was performed.

Although the method of forming a peelable joining part and preventing the outflow of the content is disclosed (for example, refer patent document 1), the side seal part of a peelable part has a weaker strength than other side seal parts. There is a flaw.

Patent Document 1: Japanese Patent Application Laid-Open No. 11-285518

The object of the present invention is to prevent leakage of the contents without requiring the correspondence to further form a dissociable joint on the unopened side of the fitting even when the contents are a material with high fluidity. The present invention provides a packaging bag body with a fitting port and a fitting port which can be easily separated from each other when the packaging bag body is opened and the contents are taken out, and which can be repeatedly sealed and opened.

MEANS TO SOLVE THE PROBLEM As a result of earnestly examining in order to solve the said subject, the tip part of the unopened side flange part of a male part and a female part side is joined by a specific thickness, and a joint part and a flange part are joined. By forming a projection of a specific thickness in between, the inventors have found that the above problems can be solved, and have completed the present invention.

That is, the present invention is as follows.

A first aspect of the present invention is a fitting device having a male portion and a female portion, wherein the fitting portion has a joint portion in which a tip end portion of an unopened side flange portion on the male side and a female portion side is joined, and is joined between the joint portion and the flange portion. It has projections, and the thickness of the joint is 10 µm or more and 100 µm or less, the thickness of the projection is 200 µm or more and 2 mm or less, the thickness of the junction is thinner than the thickness of the flange, and the thickness of the projection is flange. It is a fitting sphere characterized in that it is thicker than the thickness of.

A second aspect of the present invention is a packaging bag body with a fitting tool, characterized in that the fitting tool of the first aspect is fused to the packaging bag body and manufactured into a bag.

The fitting bag and the packing bag body of the present invention can be prevented from leaking of the contents even when the contents are high fluidity, and the joints are easily separated when the packing bag body is opened and the contents are taken out. You can do it.

EMBODIMENT OF THE INVENTION Hereinafter, this invention is demonstrated in detail.

1 schematically shows an example of the fitting tool of the present invention in a fitting state.

2 schematically shows an example of the fitting tool of the present invention.

Figure 3 shows a front view of an example of the packaging bag body with the fittings of the present invention.

4 is a cross-sectional view taken along line II-II of FIG. 3.

* Description of the sign *

1-fitting part 2-junction

2a-junction thickness 3-protrusion

3a-protrusion thickness 4-flange

4a-Flange thickness 5-pack pouch with fittings

6-substrate film 11-opening side

12-unopened side 41-male part unopened side flange

Unsealed Flange of 42-Female

1 is a schematic view showing an example of the fitting tool of the present invention in a fitting state, Figure 2 is a schematic view showing an example of the fitting tool of the present invention, Figure 3 is an example of a packaging bag body with a fitting fitting of the present invention 4 is a cross-sectional view taken along line II-II of FIG. 3.

In the fitting fitting which has a male part and a female part of this invention, the tip part of the unopened side flange part 4 of a male part side and a female part side is joined, and the thickness of the junction part 2 is 10 micrometers or more. It is 100 micrometers or less, Preferably they are 20 micrometers or more and 80 micrometers or less, More preferably, they are 20 micrometers or more and 50 micrometers or less, More preferably, they are 30 micrometers or more and 50 micrometers or less. Although the thickness of the bonded portion 2 is defined as described above, the bonded portion 2 can be easily removed when the thickness is less than 10 μm, but the strength of the bonded portion 2 is damaged or the contents are filled by friction or the like. It is because it is broken by lack. If the thickness is thicker than 100 µm, it is difficult to separate easily because the strength of the bonding portion 2 is too great.

In the fitting port of the present invention, a projection 3 is formed between the joining portion 2 and the flange portion 4, and the thickness of the projection 3 is 200 µm or more and 2 mm or less, preferably It is 300 micrometers or more and 1.5 mm or less, More preferably, they are 300 micrometers or more and 1.0 mm or less. Forming the projection 3 is to facilitate the stress concentration on the joint portion 2, if there is no projection (3) the boundary between the joint portion (2) and the flange portion (4) becomes obscure, the joint portion This is because (2) cannot be easily separated. If the thickness of the projection 3 is less than 200 µm, the difference in thickness between the junction 2 and the projection 3 is small, and it is difficult to concentrate the stress on the junction 2. In addition, when the thickness is larger than 2 mm, the amount of resin in the protrusions 3 becomes too large, so that the side seal is not made at the time of manufacturing into a bag, and the umbilical defect is easy. Moreover, when fitting a male part and a female part, fitting is easy to be inhibited or the joining part 2 is easily damaged.

Although there is no restriction | limiting in resin which comprises the fitting tool of this invention, Polyolefin resin, such as polyethylene and a polypropylene, is preferable and may be a resin composition which consists of two or more types.

 The shape and number of male and female portions are not particularly limited, and any shape can be used as long as it has a reopening and closing function.

There is no restriction | limiting in particular as a method of obtaining the fitting tool of this invention, The well-known method, such as extruding melt-kneaded resin with an extruder from a metal mold | die, cooling and shape | molding, can be used.

In addition, it is possible to obtain a packaging bag body with a fitting tool by a method of thermally fusion of the fitting tool of the present invention to a base film which is a bag body.

In addition, the packaging bag body with the fittings and fittings of the present invention is dried, solid, other packaging such as curry, porridge, seasoned broth, seasonings such as bean paste, etc. Can also be used very suitably.

EMBODIMENT OF THE INVENTION Hereinafter, although the content of this invention is demonstrated more concretely based on an Example, this invention is not limited only by the matter described in the following Example.

<Joint Evaluation>

The separability of the junction part at the time of opening was evaluated by the following method.

The separation performance of the joint part 2 was evaluated by grasping and pulling the flange part 41 on the unopened side of the male part of the fitting port and the flange part 42 on the unopened side of the female part, respectively.

Evaluation criteria are as follows.

(Double-circle): A joining part can be isolate | separated very easily.

(Circle): A joining part can be isolate | separated easily.

(Triangle | delta): Although joining part can be isolate | separated, it is difficult to separate.

X: A joining part cannot be isolate | separated.

<Liquid leakage evaluation>

In confirming the leakage of the contents, it carried out by the following method. A fitting portion having a width of 140 mm and a length of 210 mm is placed from the top of the bag to 30 mm, and a bag for packing with a fitting hole is heat-sealed at the top portion and the horizontal portion with a width of 10 mm. The packing bag body with the fitting port was filled with 200 ml of water from the bottom, and the bottom was heat sealed with a width of 10 mm. The packaging bag was dropped from a height of 1 m to check for leakage of liquid. Evaluation criteria are as follows.

(Circle): There is no liquid leak.

X: There is a liquid leak.

<Example 1>

As the material of the fitting, a resin composed of 100% by weight of ethylene-propylene copolymer (Sumitomono Bren (trademark) FS3611) manufactured by Sumitomo Chemical Co., Ltd. was used as the diameter of 40 mm and the L / D extruder 25 was used. And kneading at 210 ° C., the joint having a joint portion 2 having a thickness of 30 μm, the protrusion 3 having a thickness of 300 μm, and the flange portion 4 of the male portion and the female portion having a joint portion. After extrusion molding to have a thickness of 150 µm, the product was cooled and solidified in a cooling water tank, and then wound up in a winding machine to obtain a fitting port. The results of the joint evaluation and the liquid leakage evaluation are shown in Table 1.

<Example 2>

As a material of the fitting, a resin composed of 100% by weight of low density polyethylene (Sumikasen (trademark) F412-1 manufactured by Sumitomo Chemical Co., Ltd.) was used, and the joining portion 2 had a thickness of 50 µm and the protrusion 3 had a thickness of 500. A fitting port was obtained in the same manner as in Example 1 except that extrusion was performed so that the thickness of the flange portion 4 was 150 µm. The results of the joint evaluation and the liquid leakage evaluation are shown in Table 1.

Comparative Example 1

Using a resin composed of 100% by weight of ethylene propylene copolymer (Sumitomono Bren (trademark) FS3611) as the material of the fitting, the thickness of the joining portion 2 was 5 µm and the thickness of the projection 3 Fitting fittings were obtained in the same manner as in Example 1 except that extrusion was performed such that the thickness was 300 µm and the thickness of the flange portion 4 was 150 µm. The results of the joint evaluation and the liquid leakage evaluation are shown in Table 1.

Comparative Example 2

Using a resin composed of 100% by weight of ethylene propylene copolymer (Sumitomono Bren (trademark) FS3611) as the material of the fitting, the thickness of the joining portion 2 was 200 µm and the thickness of the projection 3 Fitting fittings were obtained in the same manner as in Example 1 except that extrusion was performed such that the thickness was 300 µm and the thickness of the flange portion 4 was 150 µm. The results of the joint evaluation and the liquid leakage evaluation are shown in Table 1.

The results show the following. That is, all the embodiments satisfying the conditions of the present invention are free of liquid leakage, and can be easily opened by unsealing the joint at the time of opening.

On the other hand, liquid leakage was observed in Comparative Example 1 in which the thickness of the bonded portion was too small, and in Comparative Example 2 in which the bonded portion was too thick, the bonded portion was bad and inferior in openability.

Example 1 Example 2 Comparative Example 1 Comparative Example 2 Joint thickness (㎛) 30 50 5 200 Protrusion Shape Thickness (㎛) 300 500 300 300 Flange part thickness (㎛) 150 150 150 150 Joint Evaluation ◎ ○ ◎ × Liquid leak rating ○ ○ × ○

The packaging bag body with the fitting tool and the fitting tool of the present invention can be applied to the packaging bag body with the fitting tool and the fitting tool which can be repeatedly fitted and reopened after opening.

Claims (2)

In the fitting part which can be fitted to each other which has a male part and a female part, The tip of the unopened flange part of the male part and the female part has a joined part joined to each other, and has a projection shaped part between the joined part and the flange part, and the thickness of the joined part is 10 µm or more and 100 µm or less, and the thickness of the projected part. Is 200 µm or more and 2 mm or less, and the thickness of the joining portion is thinner than the thickness of the flange portion, and the thickness of the projection is thicker than the thickness of the flange portion. A packaging bag body with a fitting tool, wherein the fitting tool according to claim 1 is fused to a packaging bag body and manufactured into a bag.

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