Filter for a plastic (synthetic resin) melt

Liquid purification or separation – With repair or assembling means – Sliding or rolling on guide means

Patent

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Details

210447, 210489, 210495, 210498, 210499, 210330, 425199, B01D 2996

Patent

active

054983347

ABSTRACT:
A filter for a synthetic resin melt has a housing formed from two blocks through which a melt channel for the passage of the plastics melt passes. A screen plate is rotatably mounted to intrude between the blocks and a plurality of recesses are distributed in a circular pattern around the periphery of the screen plate so that rotation can bring two of the recesses in to line with the channel. A plurality of filter elements are accommodated, one each in each recess, so that the plastic melt must pass through the filters in the recesses in line with the channel. To support the filter elements against melt pressure a stationary perforated plate is located in the channel immediately adjacent and downstream of the screen plate. By rotating the screen plate exhausted filter elements can be readily replaced. The filter elements are made of woven wire cloth and may be dished to prevent distortion of the mesh.

REFERENCES:
patent: 4562022 (1985-12-01), Li et al.
patent: 4588502 (1986-05-01), Zibell et al.

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