Parallel filters for plastic melts

Details Parallel filters for plastic melts Parallel filters for plastic melts

1999-05-27

2000-09-12

Savage, Matthew O.

Liquid purification or separation

With repair or assembling means

210249, 210340, 210420, 210450, B01D 2952, B01D 2996

Patent

active

061173207

ABSTRACT:
A filter for filtering plastic melt prior to feeding the melt into an extruder nozzle, for example a thermoplastic film extruder nozzle, has preferably two filter housings for holding respective exchangeable filter cartridges. Both filter housings are articulated by hinges to a column mounting so that one filter housing can be serviced while the other filter housing with its filter cartridge is in a filtering position and vice versa. A single filter may be used alternatively. In both instances the column mounting may include at least one, preferably two, mounting columns.

REFERENCES:
patent: 2656930 (1953-10-01), Vries
patent: 3455357 (1969-07-01), Zink
patent: 3727767 (1973-04-01), Itter et al.
patent: 5536399 (1996-07-01), Kaneshige

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