Tube of oriented, heat shrunk, melt blown fibers

Details Tube of oriented, heat shrunk, melt blown fibers Tube of oriented, heat shrunk, melt blown fibers

1987-12-11

1989-07-11

Robinson, Ellis P.

Stock material or miscellaneous articles

Hollow or container type article

Shrinkable or shrunk

428 361, 428299, 428903, 156167, F16L 1102

Patent

active

048471259

ABSTRACT:
There is disclosed a process and apparatus for melt blowing at an initial velocity of from 500 to 1000 feet per second a molten thermoplastic condensation polymer at a temperature less than 50.degree. C. above the melting point thereof to form fibers of high molecular orientation, and collecting the fibers to form a non-woven web. In one aspect of the present invention, the fibers are collected on a rotating mandrel and heat treated during collection or subsequent of collection.

REFERENCES:
patent: 3849241 (1974-11-01), Butin et al.
patent: 4021281 (1977-05-01), Pall
patent: 4116738 (1978-09-01), Pall
patent: 4578307 (1986-03-01), Niki et al.
patent: 4663222 (1987-05-01), Ohue et al.
patent: 4714697 (1987-12-01), Ship, Jr. et al.

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