Liquid purification or separation – With heater or heat exchanger – For filter
Patent
1989-02-28
1990-03-06
Fisher, Richard V.
Liquid purification or separation
With heater or heat exchanger
For filter
210437, 210447, 210456, 425 84, 425197, B01D 2700
Patent
active
049063600
ABSTRACT:
A multi-stage filter for filtering injection molding melt includes an elongate filter element having a filter inlet end, a filter outlet end and a plurality of filter stages axially disposed on the element and adjoining each other. Each filter stage includes a plurality of axial filter grooves in its outer surface which are spaced apart from a filter chamber wall to define a distinct filter clearance for each filter stage. The axial filter grooves are circumferentially spaced apart from each other and alternate with axial grooves axially extending between adjoining filter stages which define melt transfer passages to transfer melt between filter stages.
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"Filter Nozzle" Mold Masters Brochure, (1982).
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"EMI Corp. Plastics Equipment Advertisement", PlasticTrends, Feb.-Mar., 1988, p. 3.
Fisher Richard V.
Millard Wanda L.
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