Spinning head with filter cartridge

Details Spinning head with filter cartridge Spinning head with filter cartridge

1994-10-05

1997-02-11

Silbaugh, Jan H.

Plastic article or earthenware shaping or treating: apparatus

With apparatus assembly or dismantling means or with idle part

For extrusion or injection type shaping means

425197, 425198, 425199, 4253822, B29C 4736

Patent

active

056018541

ABSTRACT:
Spinning head for spinning polymer melts, having a filter cartridge made of a seamless metal cloth cylinder having an end cap and a connector, said cartridge being disposed within a melt passage having a conical taper toward the bottom. The connector is inserted into the melt channel and has a matching conical shape to seal against the channel wall. A die plate having a maximum area of 90 cm.sup.2 connects to the connector. An opening through the connector permits filtered polymer melt to flow from the filter cartridge through the connector to the die plate. A single filter cartridge is provided for each die plate, whereby the ratio of filter area to die plate area is at least 0.5:1.

REFERENCES:
patent: 2437685 (1948-03-01), Dreyfus
patent: 3074104 (1963-01-01), Stanley
patent: 3570059 (1971-03-01), Mott
patent: 3728061 (1973-04-01), Mott
patent: 3750889 (1973-08-01), Acosta
patent: 3802821 (1974-04-01), Mott
patent: 3841489 (1974-10-01), Combest et al.
patent: 3985654 (1976-10-01), Pall
patent: 4283289 (1981-08-01), Meyst et al.
patent: 4704077 (1987-11-01), Lenk
patent: 5304052 (1994-04-01), Schroeder et al.
Nicos H. Andreas "Filtration of High Polymer:Filter Media and Filter Geometry Selection Criteria" International Fiber Journal, Jun. 1991, pp. 25,26,28,30-32, 50-56.

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