Crown closure

Details Crown closure Crown closure

1979-09-18

1981-04-14

Robinson, Ellis P.

Bottles and jars

Closures

Including visual indicia

40307, 40311, 215328, 260DIG37, 428202, 428204, 428209, 428413, 428416, 428461, 428501, 428506, 428515, 428516, 428518, B65D 4112

Patent

active

RE0305731

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] an oxidized polyethylene and a topcoat layer containing [a polyethylene oxide] an oxidized polyethylene 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] an oxidized polyethylene, printing indicia thereon, providing atop said undercoat layer a primer topcoat layer containing [a polyethylene oxide] an oxidized polyethylene 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
patent: 3233770 (1966-02-01), Zapata
patent: 3361281 (1968-01-01), Kehe
patent: 3487124 (1969-12-01), Yeshin
patent: 3557987 (1971-01-01), Singer
patent: 3633781 (1972-01-01), Zapata
patent: 4012270 (1977-03-01), Fitko
patent: 4034132 (1977-07-01), Manuel
patent: 4062997 (1977-12-01), Hotta

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