Zipper tape-equipped bag body, article housing method for zipper tape-equipped bag body, manufacturing method for zipper tape-equipped bag body, and manufacturing device for zipper tape-equipped bag body

Patent metadata

Field	Value
Publication number	US-12472718-B2
Application number	US-202217682219-A
Country	US
Kind code	B2
Filing date	Feb 28, 2022
Priority date	May 21, 2014
Publication date	Nov 18, 2025
Grant date	Nov 18, 2025

Abstract

A female belt-shaped base is attached to a bag body at a region from a female hook to a first end near an open end of the bag body and to a second end near a housing space. A male belt-shaped base is attached to the bag body only in a bonding region without being attached at a region from a position where an engagement portion is continuously attached to a first end near the open end of the bag body.

First claim

The invention claimed is:

1 . A zipper tape comprising:
a first engagement portion; a first belt-shaped base continuously provided to the first engagement portion; a second engagement portion engageable with the first engagement portion; and a second belt-shaped base continuously provided to the second engagement portion, wherein the second belt-shaped base is shortened in a width direction of the zipper tape in relation to the first belt-shaped base to have a shorter length from a position where the second belt-shaped base is continuously provided to the second engagement portion to a first end of the second belt-shaped base in a first side of the width direction, the first engagement portion includes a pair of female claws, the second engagement portion includes a first male claw and a second male claw, the pair of female claws each forming a female hook respectively having inclined surfaces configured to be respectively engaged with the first male claw and the second male claw, an angle of each of the inclined surfaces relative to a line perpendicular to the first belt-shaped base is less than 90 degrees, a tip end of each of the first male claw and the second male claw is folded toward the second belt-shaped base, the first belt-shaped base has a first bonding surface being an opposite surface from the surface where the first engagement portion is formed, the second belt-shaped base has a second bonding surface being an opposite surface from the surface where the second engagement portion is formed, the first bonding surface and the second bonding surface are configured to be bonded to a base film, the second belt-shaped base has an unholdable length from the position where the second belt-shaped base is continuously provided to the second engagement portion to the first end, the first engagement portion further includes a first hook having a claw protruding only toward a first end of the first belt-shaped base in the first side of the width direction, the second engagement portion further includes a second hook having a claw protruding only toward a second end of the second belt-shaped base in a second side of the width direction, and the first hook and the second hook are configured to be engaged with each other without supporting element.

2 . The zipper tape according to claim 1 , wherein
the second belt-shaped base has a length that is 2.0 mm or less from the position where the second belt-shaped base is continuously provided to the second engagement portion to the first end.

3 . The zipper tape according to claim 1 , wherein
the second belt-shaped base is not formed from the position where the second belt-shaped base is continuously provided to the second engagement portion to the first end.

4 . A zipper tape-equipped bag comprising the zipper tape according to claim 1 and a bag body formed by the base film comprising a housing space, wherein
the first belt-shaped base and the second belt-shaped base is bonded to an inner surface of the bag body such that the first end is positioned opposite to the housing space,
the first belt-shaped base is bonded to the bag body at least at a position between the first engagement portion and each of the first end and a second end opposite to the first end,
the second belt-shaped base is bonded to the bag body at a position between the second engagement portion and the second end without being bonded to the bag body from the second engagement portion to the first end.

5 . A zipper tape-equipped bag comprising the zipper tape according to claim 1 and a bag body formed by the base film comprising a housing space, wherein
the first belt-shaped base and the second belt-shaped base is bonded to an inner surface of the bag body such that the first end is positioned opposite to the housing space.

6 . A zipper tape comprising:
a first engagement portion; a first belt-shaped base continuously provided to the first engagement portion; a second engagement portion engageable with the first engagement portion; and a second belt-shaped base continuously provided to the second engagement portion, wherein the second belt-shaped base is shortened in a width direction of the zipper tape in relation to the first belt-shaped base to have a shorter length from a position where the second belt-shaped base is continuously provided to the second engagement portion to one end of the second belt-shaped base in the width direction, the first engagement portion includes a first claw and a second claw, the second claw includes a pair of female claws, the second engagement portion includes a third claw and a fourth claw, the third claw protrudes toward the other end of the second belt-shaped base in the width direction and has a first inclined surface to be engaged with the first claw, a first acute angle is formed between the first inclined surface and a line perpendicular to the second belt-shaped base, and a tip end of the third claw is folded toward the second belt-shaped base, the fourth claw includes a first male claw and a second male claw protruding toward the one end and the other end of the second belt-shaped base in the width direction, respectively, and having a second inclined surface and a third inclined surface, respectively, to be engaged with each of the pair of female claws, respectively, a tip end of each of the first male claw and the second male claw is folded toward the second belt-shaped base, and the second belt-shaped base is shortened on the one end in the width direction and is not shortened on the other end in the width direction.

7 . A zipper tape-equipped bag comprising the zipper tape according to claim 6 and a bag body comprising a housing space, wherein
the first belt-shaped base and the second belt-shaped base is bonded to an inner surface of the bag body such that the one end is positioned opposite to the housing space.

8 . A zipper tape comprising:
a first engagement portion; a first belt-shaped base continuously provided to the first engagement portion; a second engagement portion engageable with the first engagement portion; and a second belt-shaped base continuously provided to the second engagement portion, wherein the second belt-shaped base is shortened in a width direction of the zipper tape in relation to the first belt-shaped base to have a shorter length from a position where the second belt-shaped base is continuously provided to the second engagement portion to a first end of the second belt-shaped base in a first side of the width direction, the first engagement portion includes a pair of female claws, the second engagement portion includes a first male claw and a second male claw, the pair of female claws each forming a female hook respectively having first inclined surfaces configured to be respectively engaged with the first male claw and the second male claw, an angle of each of the first inclined surfaces relative to a line perpendicular to the first belt-shaped base is less than 90 degrees, the first male claw forms a first male hook having a second inclined surface configured to be engaged with one of the pair of female claws, the second male claw forms a second male hook having a third inclined surface configured to be engaged with the other of the pair of female claws, an obtuse angle is formed between the second inclined surface and a line perpendicular to the second belt-shaped base, an acute angle is formed between the third inclined surface and the line perpendicular to the second belt-shaped base, the first belt-shaped base has a first bonding surface being an opposite surface from the surface where the first engagement portion is formed, the second belt-shaped base has a second bonding surf

Assignees

• Idemitsu Unitech Co Ltd

Inventors

• Goto Shuichi
• TODAKA Takumi

Classifications

• B65D33/2566

  using two or more independently operable slide fasteners · CPC title

• B65D33/2541

  characterised by the slide fastener, e.g. adapted to interlock with a sheet between the interlocking members having sections of particular shape · CPC title

• B65D33/2516 Primary

  comprising tamper-indicating means, e.g. located within the fastener (provided in the slider B65D33/2585) · CPC title

• B31B2155/002

  by joining superimposed webs, e.g. with separate bottom webs · CPC title

• B31B70/642

  using sealing jaws or sealing dies · CPC title