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Fastener and bag having same

A buckle and component technology, applied in the direction of bags, fasteners, sacks, etc., can solve problems such as difficulty in opening, and achieve the effect of easy opening

Active Publication Date: 2007-11-14
IDEMITSU UNITECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0018] However, when opening the seal by pulling the release button, the strip-shaped base and the base film must be cut together, and force is required to open the seal, so there is a problem that it is difficult for users who do not have strength to open the seal.
[0019] In this way, in the prior art as above, the bag can be unsealed by cutting the predetermined position of the bag substrate by cutting the tape or the opening button, so although the usability of the bag will not deteriorate after unsealing, But in order to meet the high performance required by the market, there is still room for improvement

Method used

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  • Fastener and bag having same
  • Fastener and bag having same
  • Fastener and bag having same

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0076] First, the first embodiment of the bag with snap closure of the present invention will be described.

[0077] In addition, FIG. 1 is a schematic front view showing a first embodiment of a bag with a buckle according to the present invention.

[0078] The bag 1 shown in FIG. 1 is made by bagging base film 10a, 10b as a bag material with heat-sealed buckle 2, and in a state where the bottom 3 with the bottom seal 31 is folded at the fold line 32, along the A so-called stand-up pouch manufactured by applying a side seal 11 to the side edge.

[0079] In addition, in the illustrated example, the upper edge of the bag 1 is set as an unsealed portion, but the top seal 13 is performed after the contents are filled.

[0080] Here, FIG. 2 is a schematic cross-sectional view of a portion corresponding to the A-A section of FIG. 1 in a state where the top seal 13 is implemented, and the top seal 13 is implemented so that it is connected to the buckle 2 mounted on the top of the ba...

no. 2 approach

[0134] Next, a second embodiment of the bag with snap closure of the present invention will be described.

[0135] In addition, FIG. 11 is a schematic front view showing an embodiment of the bag with a snap of the present invention. The bag 1 shown in FIG. 11 is made by bagging the base film 10a, 10b as the bag material with the buckle 2 heat-sealed, and in the state where the bottom 3 with the bottom seal 31 is folded at the fold line 32, along the A so-called stand-up pouch manufactured by applying a side seal 11 to the side edge.

[0136] In addition, in the illustrated example, the upper edge of the bag 1 is set as an unsealed portion, but the top seal 13 is performed after the contents are filled.

[0137] Here, FIG. 12 is a schematic cross-sectional view showing a portion corresponding to the section C-C in FIG. 11 in a state where the top seal 13 has been applied. After filling the content between the concave member 2b and the base film 10b, the Top seal13.

[0138] ...

Embodiment 1

[0178] One side melt extrusion density is 926kg / m 3 , Low-density polyethylene (melting point: 110°C) with an MFR of 1.5g / 10min is used to extrude the convex part, while using a density of 900kg / m in the base material 3 , Atactic polypropylene with an MFR of 7.0g / 10min (melting point: 134°C), used in the heat-sealing layer with a density of 900kg / m 3 , MFR is 4.0g / 10min metallocene-based linear low-density polyethylene, they are extruded and supplied to one widthwise end of the convex member on the unsealing side of the bag, and while the convex member is formed, the The tear inducing sheet is integrally formed with the male member, resulting in the male member having the tear inducing sheet. At this time, the heat seal layer of the tear inducing sheet was formed at a distance of 0.6 mm so as to create a gap with the base of the convex member.

[0179] A female part having a tear-inducing piece was also formed to obtain a zipper belt having a pair of male parts and female pa...

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Abstract

A tearing guide strip 23 is integrated with a base part 21a or 21b of at least one of a male member 2a and a female member 2b constituting a zipper 2 in a peelable manner to improve the tearing unsealing ability of a zipper-equipped bag provided with an interlocking type zipper enabling resealing and unsealing after the bag is unsealed.

Description

technical field [0001] The present invention relates to a buckle capable of improving the unsealability of a snap-fit ​​bag having a snap-fit ​​snap so that it can be reclosed and re-opened after opening, and a snap-fit ​​bag having such a snap . Background technique [0002] In the past, in many fields such as food, medicine, groceries, etc., the following bags with snaps have been used: there are snap-in snaps (snaps) at the inlet and outlet of the contents, which can be closed and re-opened after opening (such as , Patent Document 1, Patent Document 2, Patent Document 3, etc.). [0003] Usually, such a bag with a buckle is manufactured by preparing a strip-shaped buckle in advance, and sealing the buckle to a base film as a bag material to form a bag. [0004] Patent Document 1: JP-A-2004-244027 [0005] Patent Document 2: JP-A-2000-355336 [0006] Patent Document 3: JP-A-2004-276925 [0007] However, such a bag with a buckle is generally configured so that it can be...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B65D33/00B65D33/25
CPCB65D75/66B65D33/2533Y10T24/2532B65D33/00B65D33/25B65D75/008
Inventor 南波芳典田中研一
Owner IDEMITSU UNITECH CO LTD
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