Rotary injection molding system for suppressing polymer flash

Details Rotary injection molding system for suppressing polymer flash Rotary injection molding system for suppressing polymer flash

1984-12-21

1986-03-11

Flint, Jr., J. Howard

Plastic and nonmetallic article shaping or treating: processes

With severing, removing material from preform mechanically,...

Flash or sprue removal type

264312, 425215, 425556, 425806, 425426, 425435, 425567, 249144, B29C 1712, B29D 710

Patent

active

045754438

ABSTRACT:
A device and method for flash suppression in a molding with rotation system having a non-rotating mating surface capable of venting gases during the molding process while simultaneously suppressing flash. Flash is directed inwardly and away from the mating surface and contained between a mandrel and mandrel housing in a low pressure reservoir which is completely separate from the mating surface. A cooling fluid is utilized to carry away flash particles from the low pressure reservoir and thereby further prevent contamination of the mating surface.

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patent: 3892828 (1975-07-01), Weatherly et al.
patent: 4083568 (1978-04-01), Lane et al.
patent: 4361531 (1982-11-01), Black
patent: 4380423 (1983-04-01), Aoki
patent: 4445406 (1984-05-01), Thatcher
patent: 4449913 (1984-05-01), Krishnakumars et al.

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