Apparatus for the plastifying of thermoplastic synthetic resins

Details Apparatus for the plastifying of thermoplastic synthetic resins Apparatus for the plastifying of thermoplastic synthetic resins

1991-07-26

1992-09-08

Woo, Jay H.

Plastic article or earthenware shaping or treating: apparatus

Means applying electrical or wave energy directly to work

Electro-static or inductive field

4251748E, 425550, 264 26, B29C 4574, B29C 4780

Patent

active

051456940

ABSTRACT:
A plastifying worm for an extruder or injection-molding system utilizes a worm cylinder and a worm or worm core as outer and inner electrodes to which high-frequency energy is applied for direct high-frequency dielectric heating of a thermoplastic synthetic resin. Between the electrodes is disposed an insulator.

REFERENCES:
patent: 2370883 (1945-03-01), Smith
patent: 2386966 (1945-10-01), MacMillin
patent: 2436999 (1948-03-01), MacMillin et al.
patent: 2505602 (1950-04-01), Bertrand
patent: 2608637 (1952-08-01), Dakin et al.
patent: 4546226 (1985-10-01), Trembley et al.

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