Processes for sealing hollow fiber membranes arranged in the for

Details Processes for sealing hollow fiber membranes arranged in the for Processes for sealing hollow fiber membranes arranged in the for

1979-09-26

1981-06-30

Derrington, James H.

Plastic and nonmetallic article shaping or treating: processes

With severing, removing material from preform mechanically,...

Removing surface portion of composite workpiece to expose...

264 25, 264 80, 264138, 264159, 264163, 264241, 264257, 264322, B32B 2100

Patent

active

042762499

ABSTRACT:
Processes are disclosed for sealing the ends of the bores of a plurality of hollow fiber membranes comprised of a thermoplastic material which membranes are arranged in the form of a bundle by subjecting the ends of the hollow fiber membranes to heat to effect the sealing. The heat also causes the ends of the hollow fiber membranes to adhere to one and another. An insert material is placed within the bundle of hollow fiber membranes at the zone which is subjected to the heat. This insert material provides a barrier to the adhering of the hollow fiber membranes and thus provides a fluid passageway at the sealed end of the bundle.

REFERENCES:
patent: 3968192 (1976-07-01), Hoffman
patent: 4183890 (1980-01-01), Bollinger
Central Patents Index, Accession Number 42798u (Sep. 6, 1973).

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