Method for cold forming plastic article

Details Method for cold forming plastic article Method for cold forming plastic article

1972-07-10

1976-03-30

White, Robert F.

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

Shaping against forming surface

260 793R, 264 83, 264292, B29B 100, B29C 1703

Patent

active

039475395

ABSTRACT:
Plastic substrate in the form of sheet, disk, or plate is advantageously converted to a shaped article by first surface sulfonating the plastic substrate and thereafter cold forming the plastic substrate to the desired shape. Surface sulfonation of the plastic substrate prior to cold forming eliminates the need for lubricating the plastic substrate or surfaces of the cold forming apparatus.

REFERENCES:
patent: 2937066 (1960-05-01), Walles
patent: 3021570 (1962-02-01), Podesta et al.
patent: 3487139 (1969-12-01), Mojonnier et al.
patent: 3592724 (1971-07-01), King, Jr. et al.

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