Plastic closure with flowed-in plastisol lining

Details Plastic closure with flowed-in plastisol lining Plastic closure with flowed-in plastisol lining

1985-01-30

1986-02-18

Norton, Donald F.

Bottles and jars

Closures

Cap type

215352, B65D 5300

Patent

active

045708118

ABSTRACT:
This relates to the securement of a flowed-in plastisol liner in a plastic closure member. The closure member is provided with a channel-shaped seat into which plastisol material is flowed, and after which the plastisol material is cured. Air which is normally entrapped between the plastisol liner and walls of the seat is greatly reduced by providing a seat with a plurality of abutments or projections which extend into the seat and the base thereof and wherein the abutments are generally of a tapered configuration and terminate in the base in fillets or radii which permit the flow of air from around the abutments as the plastisol liner material is flowed into the seat. Also, top portions of the abutments are provided with interlocking elements in the form of slots, crosses and the like into which the liner material flows and forms a mechanical interlock between the plastisol liner and the abutments, thereby preventing relative rotation between the plastisol liner and the closure member.

REFERENCES:
patent: 4331249 (1982-05-01), Banich

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