Tamper-evident pull tab induction liner with improved moisture m

Details Tamper-evident pull tab induction liner with improved moisture m Tamper-evident pull tab induction liner with improved moisture m

1997-04-01

1999-01-19

Cronin, Stephen

Bottles and jars

Closures

Retained by bonding or adhesive means

215258, 215347, 215349, 220359, 2291231, 2291232, B65D 4302

Patent

active

058605444

ABSTRACT:
A tamper-evident heat induction liner for sealing a container includes at least four stacked layers and exhibits improved resistance to moisture migration. A heat seal polymer layer is provided for induction bonding against a container opening. A moisture-impermeable foil layer is secured against the polymer layer opposite the container opening. Tear-resistant backing layer is provided, and is secured to a low cohesive strength layer which is disposed between the backing layer and the foil layer. The low cohesive layer splits when the backing layer is lifted, leaving the foil layer and polymer layer with a portion of the split low cohesive strength layer covering the container opening in a tamper-evident, rupturable manner.

REFERENCES:
patent: 4588099 (1986-05-01), Diez
patent: 4596338 (1986-06-01), Yousif
patent: 5197618 (1993-03-01), Goth

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