Method of manufacturing hollow elements from thermoplastic mater

Details Method of manufacturing hollow elements from thermoplastic mater Method of manufacturing hollow elements from thermoplastic mater

1975-01-29

1976-07-20

Hoag, Willard E.

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

Shaping against forming surface

264114, 264126, 264331, 264DIG46, B29C 504, B29F 500

Patent

active

039707369

ABSTRACT:
A method of moulding a drum or similar from a thermoplastic resin in powdered form, in which an appropriately shaped mould, after introduction of the thermoplastic material, is subjected to the actions of alternate direction rotation, tilting, heating and cooling in a predetermined sequence with the heating of the drum body and ends being effected and controlled independently.

REFERENCES:
patent: 2736925 (1956-03-01), Heisler et al.
patent: 3172160 (1965-03-01), Woodhouse
patent: 3217078 (1965-11-01), Kleiber
patent: 3315314 (1967-04-01), Barnette et al.
patent: 3316339 (1967-04-01), Breneman
patent: 3329751 (1967-07-01), Slicker et al.

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