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Zipper tape and packing bag with zipper tape

A buckle and bag body technology, applied in the directions of packaging, transportation, packaging, bags, etc., can solve the problems of hindering the cutting performance of the cutting part, the cutting part is difficult to be cut, and the cutting part cannot be subjected to stress, etc., and achieves sufficient sealing and good The effect of opening

Inactive Publication Date: 2012-10-24
IDEMITSU UNITECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case, there is a possibility that the cutting performance of the cutting part may be hindered.
[0011] In addition, in the structure described in Patent Document 3, if at least one of the protrusions is not fixed to the bag main body film, the cutting portion may not receive sufficient stress to open the seal.
Therefore, there may be a problem that the cut portion is difficult to cut

Method used

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  • Zipper tape and packing bag with zipper tape
  • Zipper tape and packing bag with zipper tape
  • Zipper tape and packing bag with zipper tape

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0047] Hereinafter, a packaging bag with a zipper tape (hereinafter sometimes simply referred to as "packaging bag") according to a first embodiment of the present invention will be described with reference to the drawings.

[0048] In addition, the packaging bag of the present invention can be suitably used for filling liquid as the content to be stored, but it may also be filled with powder, solid, gel, or the like. In addition, although an example was shown in which the thick portion, the cut portion, and the seal base are provided on the female member, they may also be provided on the male member.

[0049] The structure of the bag with the buckle strap:

[0050] The packaging bag 1 of the present embodiment is as figure 1 and figure 2 As shown, there is a bag body 10 formed by laminating base film 11 as a packaging material and forming a side seal base 12 and an upper seal base 13 on the periphery thereof. On the inner surface 10A of the opening 14 of the bag body 10 ...

no. 2 approach

[0115] Next, a second embodiment of the present invention will be described with reference to the drawings.

[0116] Figure 9 It is an enlarged perspective view showing the vicinity of the sealing base of the zipper tape in the packaging bag according to the second embodiment of the present invention. In addition, in the second embodiment, descriptions of the same or similar configurations as those of the first embodiment are omitted or simplified.

[0117] The thick portion 41 in the second embodiment is formed by forming the thick portion 31 in the first embodiment into a substantially rectangular cross section. The thick wall portion 41 has two ribs 411 along the longitudinal direction of the cutting portion 32 on the surface opposite to the inner surface 10A of the bag body 10 on which the male-side strip-shaped base portion 211 is mounted. 10A is bonded and has a triangular cross-section. The rib 411 is preferably formed to have a predetermined height dimension. Spec...

no. 3 approach

[0124] Next, a third embodiment of the present invention will be described with reference to the drawings.

[0125] Figure 10 It is a cross-sectional view showing a state where the male part and the female part of the zipper tape are engaged in the packaging bag according to the third embodiment of the present invention. Regarding the third embodiment, descriptions of the same or similar configurations as those of the above-described embodiments are omitted or simplified.

[0126] The cut portion 42 in the third embodiment is formed by forming the cut portion 32 in the second embodiment on a plane intersecting the inner surface 10A of the bag body 10 in the opposing direction of the thick portion 41 and the seal base portion 33 . In addition, in order to prevent pressure concentration when pressure is applied from the outside, it is preferable to provide a curved surface 421 formed by bending an acute-angled portion connected to the seal base 33 into an arcuate cross section....

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PUM

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Abstract

The invention provides a zipper tape, a packaging bag and a manufacturing method of the packaging bag. One edge portion (224) of a female side band-shaped base (221) on the side of a storage space (15) is made thick to provide a thick portion (31). A cutting portion (32) which is thinner than the female side band-shaped base (221) is provided on the storage space (15) side of the thick portion (31). A sealing base (33) is provided at the storage space (15) side of the cutting portion (32), wherein the sealing base (33) is thicker than the female side band-shaped base (221) and is to be sealed to the inner surface (10A) of a bag body (10) to which a male side band-shaped base (211) is adhered. A sealing strength of the thick portion (31) to the inner surface (10A) on which the male side band-shaped base (211) is adhered is smaller than the seal strength of the sealing base (33). The cutting portion (32) is provided to have a seal strength smaller than the seal strength of the sealing base (33). An area surrounded by the thick portion (31), the cutting portion (32), the sealing base (33), and the inner surface (10A) of the bag body (10) becomes a substantially sealed state, and thus, if a pressure is externally applied to the bag body (10) due to dropping, etc., damage due to extension of the cutting portion (32), etc., can be prevented.

Description

technical field [0001] The invention relates to a buckle belt and a packaging bag with the buckle belt. Background technique [0002] Conventionally, there is known a packaging bag with a zipper tape (hereinafter sometimes simply referred to as a "packaging bag") in which a zipper tape is bonded to the inner surface of the bag. When filling such a packaging bag with powder or liquid as the content, the content may leak from the bayonet upward seal side during transportation. Therefore, in order to prevent contents from leaking out, there are known zipper tapes having a spacer structure between the zipper tape and the contents, and packaging bags with zipper tapes (for example, refer to Patent Documents 1 to 3). [0003] As a spacer structure provided on the zipper tape, for example, there is known a seal capable of easily peeling off a part of the zipper tape from an easily cut cut portion or from the inner surface of the bag. When opening the packaging bag, the cut portio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B65D33/25
CPCB65D33/2525B65D33/2533Y10T24/45168B65D33/25
Inventor 玉置智彦后藤修一茂上道夫
Owner IDEMITSU UNITECH CO LTD
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