Method of forming a closure cap with a seal

Details Method of forming a closure cap with a seal Method of forming a closure cap with a seal

1987-06-10

1990-05-15

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

Stretching or stretch forming

264296, 264320, 215341, B29C 5500

Patent

active

049256173

ABSTRACT:
A method for forming a linerless cap for a container, the apparatus for forming the linerless cap and the linerless cap. The cap has a peripheral skirt and a plastic lid with an annular wall adjacent the skirt extending upwardly therefrom, wherein the wall has an inner stretched, softened non-projecting sealing surface which upon engagement compresses and seals.

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Cyrogenics, (Jul. 1980)--M. Shinohara, T. Kugo, and K. Ono, Superleak-Tight Stainless Steel Hollow O-Ring Seals for Cryogenic Use.

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