Slide plate filters for thermoplastic and similar materials

Details Slide plate filters for thermoplastic and similar materials Slide plate filters for thermoplastic and similar materials

1978-06-05

1979-07-03

Sever, Frank

Liquid purification or separation

Filter

Movable medium

210408, B01D 3516

Patent

active

041599535

ABSTRACT:
A slide filter device for filtering thermoplastic and other materials which become fluid or stiffen in response to temperature change, having rigid self-supporting slide plate means movable within a housing from an inlet port passageway to an outlet port passageway for supporting and carrying replaceable filter media across the path of fluid flow (i.e.: the "melt stream") of the working material. The outlet port passageway is larger in cross-section than the slide plate means and a seal of stiffened working material is formed in the gap between the slide plate means and the walls of the passageway. Seal material emerges from the outlet port passageway affixed to the slide plate means as the slide plate means is advanced across the melt stream. Stripper knife means provided with or without temperature control means is fixed adjacent the outlet port passageway for removing seal material with used filter media from the up-stream face of the slide plate means and, if desired, for applying braking force to the advancing slide plate means. The slide plate means is in separate successive sections, and braking force can be applied to the emerging slide plate section so as to prevent the parting of adjacent successive slide plate sections while their confronting boundaries are within the path of material flow.

REFERENCES:
patent: 3856680 (1974-12-01), Elmore

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