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Packaging bag with fastener tape

A packaging bag and buckle technology, which is applied in packaging, transportation and packaging, bags, etc., can solve the problem of not easy to disconnect

Inactive Publication Date: 2009-09-02
IDEMITSU UNITECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, in Patent Document 1, the ease of detachment (breakability) of the thin-walled portion (thinner thickness portion) is affected by the seal position and seal shape of the facing film, and it is difficult to have stable breakability.

Method used

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  • Packaging bag with fastener tape
  • Packaging bag with fastener tape
  • Packaging bag with fastener tape

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0051] First, refer to Figure 1 to Figure 3 The first embodiment of the present invention will be described.

[0052] figure 1 It is a front view of the packaging bag with the zipper tape according to the first embodiment of the present invention, figure 2 yes figure 1 stereogram. image 3 yes figure 1 The cross-sectional view along line III-III is a cross-sectional view showing a state in which the zipper tape in which the seaming portion is engaged is sealed with respect to the bag body constituting the packaging bag.

[0053] Such as figure 1As shown, the packaging bag 1 with a zipper tape according to this embodiment has a bag body 2 formed by overlapping a base film 24 as a packaging material to form a side seal portion 21 and a front end seal portion 22 on its peripheral edge. form.

[0054] On the inner surface of the opening 23 of the bag body 2, a buckle belt 3 is installed, and the buckle belt 3 includes a pair of male parts 32 and female parts 33 ( figure...

no. 2 approach

[0101] Next, refer to Figure 9 to Figure 11 A second embodiment of the present invention will be described. In this embodiment, except for the configuration of the seal base 36 , other configurations are the same as those of the first embodiment, and thus description thereof will be omitted.

[0102] Such as Figure 9 As shown, in this embodiment, the sealing base 36 is made of a material having a lower melting point than the material used for the band-shaped base 331 located on the opening side of the linear portion 35 . For example, the sealing base 36 is made of atactic polypropylene (melting point 135°C), and the strip-shaped base 331 located closer to the opening than the linear portion 35 is made of polypropylene homopolymer (melting point 160°C). In addition, in the present embodiment, the sealing portion 4 has a shape such as Figure 11 A continuous convex shape as shown.

[0103] Figure 10 It is a diagram showing a state where the sealing base 36 and the inner ...

no. 3 approach

[0109] Next, a third embodiment of the present invention will be described. The configuration of this embodiment is the same as that of the first embodiment except for the configuration of the seal base 36 , so description thereof will be omitted.

[0110] Figure 12 It is a sectional view of the buckle belt 3 of this embodiment.

[0111] In the present embodiment, the material of the linear portion 35 and the material of the seal base 36 adjacent to the linear portion 35 are made of different materials with low compatibility.

[0112] For example, when polypropylene is used for the sealing base 36 , low-density polyethylene (LDPE) can be used for the linear portion 35 .

[0113] The sealing shape is the same shape as that of the above-mentioned second embodiment ( Figure 11 ), so the force is applied to the opening-side end 4A of the sealing portion 4 at the time of unsealing, so the force is also applied to the linear portion 35 in contact with the opening-side end 4A. ...

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Abstract

A belt-like base (331) of a female member (33) of a zipper tape (3) attached to inner surfaces of a bag body is widened toward a content side of the bag body relative to a facing belt-like base (321) of a male member (32) in order to define a seal base (36). The seal base (36) includes a wedge-shaped linear portion (35) formed in parallel to a longitudinal direction of an engagement portion (31). A seal portion (4) is formed adjacent to a content-side edge (35A) of the linear portion (35) by sealing the seal base (36) on a facing inner surface of the bag body. The seal portion (4) is shaped to provide continuous wave-shaped portions in which a triangular portion (4B) having a vertex (opening-side end (4A)) and a straight linear portion (4C) are integrated.

Description

technical field [0001] The invention relates to a packaging bag with a buckle belt equipped with a buckle belt that can be unsealed and sealed again. Background technique [0002] As packaging materials for packaging various items such as food, medicine, medical products, and miscellaneous goods, there is used a packaging bag with snap tape that is formed by a convex member and a female member at the opening of the bag. A pair of belt-shaped buckle belts with concave and convex bites make it open and close freely in the bite state. [0003] In addition, Patent Document 1 describes a method of performing heat sealing at a position closer to the contents than the zipper tape in order to ensure the airtightness and watertightness inside the packaging bag. [0004] In Patent Document 1, one belt part of the buckle belt attached to the opposing film inner surface becomes wider toward the contents side, and a thin part is formed on a part of the wider part. The wide portion is s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B65D33/25A44B19/16B65D33/00
CPCB31B2219/9016B31B19/90B29C65/76B29C66/72341B29L2031/7128B65D33/2525B29C66/832B29C65/58B29C66/919B29C66/225B29C66/223B29C66/73121B29C66/474B29C65/18B29C66/73921B31B1/00B31B2219/6038B29C66/1122B29C66/7234B29C66/91421B29C66/244B29C66/73115B65D33/2533B65D33/2508B29C66/431B29C66/71B31B70/642B31B70/8131B29K2077/00B29K2067/003B29K2067/00B29K2033/20B29K2027/08B29K2023/12B29K2023/086B29K2023/083B29K2023/0633B65D33/25B65D33/16A44B19/16
Inventor 片田亮田中研一
Owner IDEMITSU UNITECH CO LTD
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