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
Patent
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
Kerr Glass Manufacturing Corporation
Lowe James B.
LandOfFree
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