Method for the production of polyolefin hollow fiber filter bund

Details Method for the production of polyolefin hollow fiber filter bund Method for the production of polyolefin hollow fiber filter bund

1995-12-13

1997-09-02

Drodge, Joseph W.

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

96 8, 210496, 21050023, 21050036, 264145, B01D 6700, B01D 6908, B01D 7126

Patent

active

056628439

ABSTRACT:
A filter element includes a bundle of hollow fibers made of first polyolefin. The bundle has at least one end sealed with second polyolefin having an average molecular weight in the range of 1,000 to 16,000. The filter element is produced by a method including the steps of fusing the second polyolefin having a fusion point lower than that of the first polyolefin, attaching the fused second polyolefin to at least one end of the bundle, allowing the attached second polyolefin to set, thereby providing the bundle with a sealed portion, and cutting off the leading end of the sealed portion.

REFERENCES:
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patent: 4369605 (1983-01-01), Opersteny et al.
patent: 5066397 (1991-11-01), Muto et al.
patent: 5158680 (1992-10-01), Kawai et al.
patent: 5238735 (1993-08-01), Nagou et al.
patent: 5354470 (1994-10-01), Seita et al.
patent: 5505858 (1996-04-01), Monzen et al.

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