Method for making a gasket for a container closure

Details Method for making a gasket for a container closure Method for making a gasket for a container closure

1977-05-11

1979-02-20

Lowe, James B.

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

To produce composite, plural part or multilayered article

264331, B29C 114, B29C 1302

Patent

active

041407423

ABSTRACT:
A method for forming a gasket for a container closure. In the method, a dispersion of a finely powdered plastic resin in a fluid carrier is prepared and the viscosity of the dispersion is adjusted to provide desirable flow characteristics. The resin is not associated in the dispersion with a plasticizer. An annulus of the dispersion is applied to a container closure. The applied annulus of the dispersion is then subjected to an elevated temperature for a sufficient time to remove the carrier and to fuse the thermoplastic resin particles which are united to form a resilent seal.

REFERENCES:
patent: 2456972 (1948-12-01), Maeder, Jr. et al.
patent: 2654913 (1953-10-01), Maier
patent: 3125459 (1964-03-01), Foye
patent: 3462331 (1969-08-01), Simons
patent: 3557030 (1971-01-01), Simons

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