Plastic article or earthenware shaping or treating: apparatus – With apparatus assembly or dismantling means or with idle part
Patent
1988-12-02
1989-07-25
Chiesa, Richard L.
Plastic article or earthenware shaping or treating: apparatus
With apparatus assembly or dismantling means or with idle part
210234, 210236, 425185, 425197, 425199, B01D 3512, B29C 4768
Patent
active
048508403
ABSTRACT:
A screening device for a melt of plastic material includes a housing provided with a throughflow boring forming a part of a high pressure plastic press. A screen plate is movable transversely across the boring and includes a series of screening openings arranged at the level of the throughflow boring and being separated one from each other by an narrow web. To minimize the formation of pressure gradients in the throughflow boring when a new screening opening is entering the boring, each web has at its interface with the housing a narrow overflow slot which sets up a gradual connection for an inflow current of the melt during the entry of a new evacuated opening into the region of the throughflow boring.
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Chiesa Richard L.
Gneuss Kunststofftechnik GmbH
Striker Michael J.
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