Apparatus employing integral dielectric heater for roll forming

Details Apparatus employing integral dielectric heater for roll forming Apparatus employing integral dielectric heater for roll forming

1989-02-10

1990-07-24

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

264 26, 264175, 425174, 425369, B29C 3514

Patent

active

049432249

ABSTRACT:
An apparatus for roll forming of thermoplastic material is provided which employs a pair of rollers having forming surfaces thereon, the pair of rollers defining a gap through which the thermoplastic material is to be passed during the forming operation, the thermoplastic material being dielectrically heated to a softening temperature as it passes between the rollers by a radio frequency electromagnetic field produced between the rollers by activating a radio frequency generator or oscillator which is electrically connected to one of the rollers, the rollers each having conductive portions between which the electromagnetic field is produced.

REFERENCES:
patent: Re29072 (1976-12-01), Zondek
patent: 2373035 (1945-04-01), Land
patent: 2415025 (1947-01-01), Grell et al.
patent: 2420119 (1947-05-01), Boehm et al.
patent: 2529863 (1950-11-01), Bowen
patent: 2897546 (1959-08-01), Clapp et al.
patent: 3889348 (1975-06-01), Lemelson
patent: 4044188 (1977-08-01), Segal
patent: 4179252 (1979-12-01), Seufert
patent: 4229201 (1980-10-01), Comperatore et al.
patent: 4244683 (1981-01-01), Rowland
patent: 4268465 (1981-05-01), Suh et al.
patent: 4282638 (1981-08-01), Christ et al.
patent: 4407646 (1983-10-01), Bricot et al.
patent: 4535230 (1985-08-01), Brieu
patent: 4547141 (1985-10-01), Ruschmann
patent: 4614565 (1986-09-01), Riihinen
patent: 4627176 (1986-12-01), Brieu
patent: 4673345 (1987-06-01), Andersson
patent: 4757582 (1988-07-01), Verkasalo

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