Crown closure

Details Crown closure Crown closure

1977-03-04

1978-09-05

Pitrelli, John F.

Bottles and jars

Closures

Including visual indicia

40311, 428411, 215347, B65D 4112

Patent

active

041113233

ABSTRACT:
A crown closure having a polyolefin liner that can be readily removed, said crown closure comprising a crown shell having a primer layer on its inner surface and a polyolefin liner applied to the inside of said crown shell, characterized in that said primer layer is a two-component priming consisting of an undercoat layer containing a polyethylene oxide and a topcoat layer containing a polyethylene oxide and at least one other compatible resin, with the provision of a printing layer of indicia at the interface between said undercoat and topcoat layers or atop said topcoat layer. Aforesaid crown closure can be prepared by providing at one face of a metal stock sheet a primer undercoat layer containing a polyethylene oxide, printing indicia thereon, providing atop said undercoat layer a primer topcoat layer containing a polyethylene oxide and at least one other compatible resin, and thereafter forming said metal stock sheet into crown shells in such a manner that said coating layers come to the inside of the shells followed by depositing a polyolefin mass in said shells and molding same into the form of liners.

REFERENCES:
patent: 3147874 (1964-09-01), Hundt et al.
patent: 3557987 (1971-01-01), Singer
patent: 3633781 (1972-01-01), Zapata

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