Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – Reshaping running or indefinite-length work
Patent
1975-05-07
1976-04-13
Kucia, Richard R.
Plastic and nonmetallic article shaping or treating: processes
Mechanical shaping or molding to form or reform shaped article
Reshaping running or indefinite-length work
264210R, B29B 300, B29C 1500
Patent
active
039504808
ABSTRACT:
A method for embossing thermoplastic material and the thermoplastic material produced thereby. A transverse section of a continuous length of preformed thermoplastic film is heated by a nondirect contact heat source to raise the temperature of the film above its softening point. The film is then fed immediately between adjacent, counter-rotating embossing rollers, thereby embossing a raised pattern onto the film. The rollers are cooled to fix the embossed pattern on the film. The embossed film has good moduli, low surface gloss or light reflectance, deep embossed pattern, high tensile strength and high impact strength.
REFERENCES:
patent: 2567275 (1951-09-01), Colombo
patent: 2928124 (1960-03-01), Hugger
patent: 3170974 (1965-02-01), Jacobs
patent: 3283378 (1966-11-01), Cramton
patent: 3311692 (1967-03-01), Baird
patent: 3502765 (1970-03-01), Spencer
patent: 3540959 (1970-11-01), Connor
Adams James M.
Hopper Randall R.
Pease Robert R.
Raley Garland E.
Ethyl Corporation
Johnson Donald L.
Kucia Richard R.
Ray David L.
Sieberth John F.
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