Strippable seal mechanism
AssigneeRedex Packaging Corp.
InventorIhor Wyslotsky
Life of this patent
Estimating the term…
Abstract
The improved strippable seal mechanism inclues first and second polymeric webs each having an exterior and interior surface. The interior surface of at least one of the first and second polymeric webs polymeric webs has a substantially adhesive surface thereon for fixedly but separably adhering to the other polymeric web's interior surface. One of the first and second polymeric webs has at least one line of reduced strength disposed at the exterior surface thereof. A manually grippable tab is disposed adjacent to and operatively connected to the line of reduced strength at the exterior surface of one of the polymeric webs. The manually grippable tab operates in conjunction with the line of reduced strength to direct a peel force along the line of reduced strength to delaminate one of the first and seocnd polymeric webs.
Claims19
An improved strippable seal mechanism comprising:
- a first polymer web having first polymeric web exterior and interior surfaces, said interior surface having substantially adhesive means thereon for fixedly adhering to another surface;
- a second polymer web disposed in facing laminated contact with said first polymeric web and having second polymeric web exterior and interior surfaces, said interior surface having substantially adhesive means thereon for fixedly adhering said first polymeric web interior surface to said second polymeric web interior surface;
- said first polymeric web having at least one line of reduced strength disposed at the exterior surface thereof;
- and
- manually grippable tab means connected to said first polymeric web and disposed adjacent to and in operative connection with said line of reduced strength at said exterior surface of said first polymeric web for directing a peeling force for delamination along said line of reduced strength;
- an integrally removable peel portion on formed by said delamination along said line of reduced strength, said peel portion attached to said manually grippable tab means;
- each of said first and second polymeric webs having a primary plastic layer and a barrier layer with respective first and second tie layers disposed respectively therebetween;
- said tie layer which is disposed on said first polymeric web having a greater peel strength than said tie layer disposed within said second polymeric web, whereby upon exerting a peel force upon said manually grippable tab, the entire thickness of said first polymeric web and a portion of the thickness of said second polymeric web may be together peeled off clearly along said line of reduced strength to form a substantially smooth peel edge along said line of reduced strength;
- and
- said integrally removable peel portion having a thickness greater than said first polymeric web to assure strength and continuing integrity of said integrally removable peel portion during peeling.
Dependencies are inferred from the claim text.