Cap liner and process for using cap liner to seal containers

Details Cap liner and process for using cap liner to seal containers Cap liner and process for using cap liner to seal containers

1989-07-12

1991-10-15

Herbert, Thomas J.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Adhesive outermost layer

428347, 428349, 428352, 428354, 428464, 428516, B32B 712, B32B 1512

Patent

active

050573659

ABSTRACT:
The present invention provides a process for hermetically sealing a container having an open top. The process of this invention employs a novel cap liner comprising a backing layer consisting of thermoplastic material, a sealing layer and a bond layer between the backing layer and the sealing layer. The process comprises the steps of: providing a cap adapted to engage the open top of a container; providing a novel cap liner of this invention; inserting the cap liner into the cap; securing the cap to the container such that the sealing layer of the cap liner contacts the container and extends across the open top of the container; and bonding the sealing layer of the cap liner to the container to produce a hermetically sealed container.

REFERENCES:
patent: 3928109 (1975-12-01), Pollock et al.
patent: 4650082 (1987-03-01), Paciorek
patent: 4778698 (1988-10-01), Ou-Yang
patent: 4880701 (1989-11-01), Gibbons et al.
patent: 4917949 (1990-04-01), Yousif

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