A tearing guide strip 23 is integrated with a base part 21 a or 21 b of at least one of a male member 2 a and a female member 2 b 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.

Claims

30 · 4 independent · depth 2

30 granted claims

›1.independentA zipper comprising:na male member having a base part and a male projection and female member having a base part and a female projection,wherein the m…+8

›2.↳ 1The zipper of claim 1, wherein the tearing guide strip is provided with a heat seal layer or an adhesive on a surface opposite the binding interface.d2

›3.↳ 1The zipper of claim 1, wherein a peeling strength necessary to peel the tearing guide strip from the extended part is up to 15 N/15 mm.d2

›4.↳ 1The zipper of claim 1, wherein the tearing guide strip is suitable for being bound with a material forming the bag by higher binding strength than the…d2

›5.↳ 1The zipper according to claim 1, wherein the resin forming the tearing guide strip is polypropylene and the resin forming the extended part is polyeth…d2

›6.↳ 1The zipper according to claim 1 wherein the base part of the male member or the female member having the extended part, laterally has a length B in th…d2

›7.↳ 1The zipper according to claim 1 wherein the extended part and said tearing guide strip have been integrated by co-extrusion molding.d2

›8.↳ 1The zipper of claim 1, wherein the tearing guide strip has a higher rigidity than the extended part.d2

›9.↳ 1The zipper of claim 1, wherein the tearing guide strip has a tensile elastic modulus 1.3 to 4 times that of the extended part.d2

›10.independentA zipper comprising:nmale member having a base part and a male projection and female member having a base part and a female projection,wherein the mal…+7

›11.↳ 10The zipper of claim 10, wherein the tearing guide strip is provided with a heat seal layer or an adhesive on a surface opposite the binding interface.d2

›12.↳ 10The zipper of claim 10, wherein a peeling strength necessary to peel the tearing guide strip from the extended part is up to 15 N/15 mm.d2

›13.↳ 10The zipper of claim 10, wherein the tearing guide strip is suitable for being bound with a material forming the bag by higher binding strength than th…d2

›14.↳ 10The zipper of claim 10 wherein the incompatible resins forming the tearing guide strip and the extended part allow for the tearing guide strip to be p…d2

›15.↳ 10The zipper according to claim 10, wherein the resin forming the tearing guide strip is polypropylene and the resin forming the extended part is polyet…d2

›16.↳ 10The zipper according to claim 10 wherein the base part of the male member or the female member having the extended part, laterally has a length B in t…d2

›17.↳ 10The zipper according to claim 10 wherein the extended part and said tearing guide strip have been integrated by co-extrusion molding.d2

›18.independentA zipper equipped bag comprising:na zipper and a bag, wherein the zipper comprises a male member having a base part and a male projection and female m…+5

›24.independentA zipper equipped bag comprising:na zipper and a bag, wherein the zipper comprises a male member having a base part and a male projection, and a femal…+6

›25.↳ 24The zipper equipped bag of claim 24 wherein the bag comprises at least two base films and the tearing guide strip and both base parts are bound to a s…d2

›26.↳ 24The zipper equipped bag according to claim 24 wherein the base part of the male member or the female member having the extended part, laterally has a …d2

›27.↳ 24The zipper equipped bag of claim 24, wherein a surface of the base part of one of the male member or the female member on a side along an end edge of …d2

›28.↳ 24The zipper equipped bag of claim 24, wherein an upper edge of the bag has an unsealed part.d2

›29.↳ 24The zipper equipped bag of claim 24, wherein a top seal is provided along an upper edge of the bag.d2

›30.↳ 24The zipper equipped bag of claim 24 wherein the incompatible resins forming the tearing guide strip and the extended part allow for the tearing guide …d2

Classifications

4 codes

IPC · International Patent Classification

Section A — Human necessities

A44B1/04

Section B — Performing operations; transporting

B65D75/66
B65D33/16
B65D33/25

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Pendency

10.0 y

3,646 days filing → grant

Office actions

non-final + final

Responses

4 RCE

Interviews

examiner interview summaries

Examiner

Jes F Pascua

art unit 3782 · TC 3700

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Citations: 43 back · 0 forward

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Priority chain

1 priority documents

›Priority documents — 1

Type	Document	Date
related publication	US 20090238500 A1	24 Sep 2009

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