초록 ▼

A heat insulating layer exists between the attachment layer and the closure profile of a resealable closure mechanism for a package. A heat and pressure sealing process is used to attach the closure profile to a resealable package. A heat-sealing bar is used to apply a heat load into the attachment

A heat insulating layer exists between the attachment layer and the closure profile of a resealable closure mechanism for a package. A heat and pressure sealing process is used to attach the closure profile to a resealable package. A heat-sealing bar is used to apply a heat load into the attachment layer causing the attachment layer to fuse with the film of the package. The beat insulating layer insulates the profile layer from the heat load to prevent distorting or melting of the profile layer. The heat insulating layer also supports the profile members perpendicular to their respective base strips to facilitate opening and closing of the resealable package.

대표청구항 ▼

[ We claim:] [1.] A resealable package comprising:(a) a package surrounding wall having first and second side edges and a mouth therebetween; said mouth providing access to a package interior;(b) a recloseable zipper along said mouth for selective opening and closing of said mouth; said zipper inclu

[ We claim:] [1.] A resealable package comprising:(a) a package surrounding wall having first and second side edges and a mouth therebetween; said mouth providing access to a package interior;(b) a recloseable zipper along said mouth for selective opening and closing of said mouth; said zipper including first and second closure profiles;(i) said first closure profile consisting essentially of a base strip, a heat insulating layer, and an attachment layer;(A) said base strip having first and second opposite sides, a width, and an interlocking closure member projecting from said first side;(B) said heat insulating layer having first and second opposite sides;(1) said first side of said heat insulating layer being secured to said second side of said base strip;(2) said heat insulating layer being constructed of a material selected from the group consisting of polyethylene, polypropylene, fractional-melt high molecular weight polyolefins, and talc-filled compositions of polyolefins;(3) said heat insulating layer extending across the width of the base strip including directly behind said interlocking closure member;(C) said attachment layer having first and second opposite sides;(1) said first side of said attachment layer being secured to said second side of said heat insulating layer;(2) said second side of said attachment layer being secured to said package surrounding wall;(3) said attachment layer being constructed of polyethylene having a softening point lower than a softening point of said heat insulating layer; and(4) said attachment layer having first and second segments extending across two portions of the width of said base strip with a space therebetween; said space being directly behind said interlocking closure member.