Heat displacing type dies

Details Heat displacing type dies Heat displacing type dies

1987-08-11

1988-11-01

Chiesa, Richard L.

Plastic article or earthenware shaping or treating: apparatus

Control means responsive to or actuated by means sensing or...

Control means responsive to product weight or dimension

264 405, 2641761, 425143, 425466, B29C 4716, B29C 4792

Patent

active

047815620

ABSTRACT:
In a heat displacing type die adapted to extrude a sheet of molten resin, a heat displacing unit provided with a heater is secured to an upper die block. A lip gap is defined between a flexible lid and a stationary lip respectively provided for the upper and lower die blocks. The lower end of a bolt extending through the heat displacing unit is normally in contact with or secured to the flexible lip while the upper end is secured to the upper portion of the heat displacing unit. In a modified embodiment the bolt is air cooled.

REFERENCES:
patent: 3341388 (1967-09-01), Bunyea
patent: 3920365 (1975-11-01), Mules
patent: 3940221 (1976-02-01), Nissel
patent: 4252519 (1981-02-01), Farmer et al.
patent: 4281980 (1981-08-01), Hoagland et al.
patent: 4454084 (1984-06-01), Smith et al.
patent: 4514348 (1985-04-01), Iguchi et al.
patent: 4669965 (1987-06-01), Murakami
patent: 4704083 (1987-11-01), Iguchi et al.
patent: 4726752 (1988-02-01), Van Dun

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