Lid for heat-sealing container

Details Lid for heat-sealing container Lid for heat-sealing container

1987-03-04

1988-09-20

Little, Willis

Envelopes, wrappers, and paperboard boxes

Paperboard box

Nonunitary, peelable closure or securing element

2291232, 22912333, B65D 564, B65D 8120

Patent

active

047719370

ABSTRACT:
An improved lid for heat-sealing a container is proposed which comprises a substrate and an outer peel layer laminated to the substrate through two adhesive layers, one of which has a weaker adhesion strength than the other. The substrate has a base sheet and is formed with such a discontinuous cut outlining an opening that a tear starting from the end of one cut will be received by the front end of a cut next to the cut, and a partial opening will be formed in the substrate.

REFERENCES:
patent: 3194479 (1965-07-01), Rumberger
patent: 3488201 (1970-01-01), Pizarro
patent: 3498525 (1970-03-01), Zinkgraf
patent: 4055672 (1977-10-01), Hirsch et al.
patent: 4209126 (1980-06-01), Elias
patent: 4531668 (1985-07-01), Forbes, Jr.

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