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US 10,940,978 B2Granted
Zipper and zipper-equipped bag
AssigneeIdemitsu Unitech Co., Ltd.
InventorsYoshinori Nanba, Kenichi Tanaka
Life of this patent
Estimating the term…
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.
Claims24
A zipper equipped bag comprising:
- a first base film;
- a second base film;
- a male member having a base part and a male projection, the base part being fixed to the first base film;
- a female member having a base part and a female projection, the base part being fixed to the second base film,
- wherein the male projection and the female projection are interlockable with each other;
- and
- a tearing guide strip provided along the longitudinal direction of the base part of the male member or the female member, wherein the tearing guide strip directly contacts with the base part of the male member and the first base film or with the base part of the female member and the second base film, and wherein the base part of the male member or the female member and the tearing guide strip are formed as one integrated molded article, by co-extrusion molding,
- wherein the tearing guide strip is configured to be peeled from the base part of the male member or the female member at a binding interface by interfacial peeling and is configured to tear only the first base film or the second base film which directly contacts with tearing guide strip.
5 more elements
A zipper equipped bag comprising:
- a first base film;
- a second base film;
- a male member having a base part and a male projection the base part being fixed to the first base film;
- a female member having a base part and a female projection, the base part being fixed to the second base film,
- wherein the male projection and the female projection are interlockable with each other;
- and
- a tearing guide strip provided along the longitudinal direction of the base part of the male member or the female member, wherein the tearing guide strip directly contacts with the base part of the male member and the first base film or with the base part of the female member and the second base film, wherein the base part of the male member or the female member and the tearing guide strip are formed as one integrated molded article, and wherein a resin material forming the tearing guide strip and a resin material of the base part are incompatible with each other,
- wherein the tearing guide strip is configured to be peeled from the base part of the male member or the female member at a binding interface by interfacial peeling and is configured to tear only the first base film or the second base film which directly contacts with tearing guide strip.
5 more elements
A cut tape equipped bag comprising:
- a first base film;
- a second base film;
- a base part fixed to the first base film or the second base film;
- and
- a tearing guide strip provided along the longitudinal direction of the base part, wherein the tearing guide strip directly contacts with the base part and the first base film or the second base film which is fixed to the base part, and wherein the base part and the tearing guide strip are formed as one integrated molded article,
- wherein the tearing guide strip is configured to be peeled from the base part at a binding interface by interfacial peeling and is configured to tear only the first base film or the second base film which directly contacts with the tearing guide strip.
3 more elements
A cut tape equipped bag comprising:
- a first base film;
- a second base film;
- a base part fixed to the first base film or the second base film;
- and
- a tearing guide strip provided along the longitudinal direction of the base part, wherein the tearing guide strip directly contacts with the base part and the first base film or the second base film which is fixed to the base part, wherein the base part and the tearing guide strip are formed as one integrated molded article, and wherein a resin material forming the tearing guide strip and a resin material of the base part are incompatible with each other,
- wherein the tearing guide strip is configured to be peeled from the base part at a binding interface by interfacial peeling and is configured to tear only the first base film or the second base film which directly contacts with the tearing guide strip.
3 more elements
Dependencies are inferred from the claim text.