Low oxygen barrier type plastic closure with an adhered gasketin

Details Low oxygen barrier type plastic closure with an adhered gasketin Low oxygen barrier type plastic closure with an adhered gasketin

1987-03-13

1988-09-27

Herbert, Thomas J.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Physical dimension specified

264160, 427211, 428337, 428341, 428461, 428463, 428913, B32B 1508, B32B 2706

Patent

active

047741341

ABSTRACT:
A container closure formed from a thermoplastic polyolefin, e.g. polypropylene, which has been molded and adheres simultaneously to a coated foil, e.g. an aluminum insert, to which a conventional plastisol gasketing compound may be adhered to provide a hermetic container seal under hot fill and retort conditions. In order to facilitate adhesion to both the polypropylene closure panel and the PVC plastisol gasketing compound, a dead soft aluminum foil web was first coated on one side with an organosol utilizing a gravure coater, after which the coated web was passed through an oven. The partially coated web was then coated with a primer dispersion again utilizing a gravure coater, after which the coated web was passed through a second oven. A layer of polypropylene homopolymer was applied to the primer and inserts were die cut from the resultant web. The inserts were incorporated in a closure injection molding apparatus and a plastic closure injection molded thereabout. Thereafter a plastisol gasket compound was applied to the exposed surface of the insert and fused by convection and/or induction or dielectric heat.

REFERENCES:
patent: 4310578 (1982-01-01), Katsura et al.
patent: 4695503 (1987-09-01), Liu et al.

Affiliated with

Also associated with

Rating

Low oxygen barrier type plastic closure with an adhered gasketin does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Low oxygen barrier type plastic closure with an adhered gasketin, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Low oxygen barrier type plastic closure with an adhered gasketin will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2397478