Process for forming non-woven webs from highly oriented melt blo

Details Process for forming non-woven webs from highly oriented melt blo Process for forming non-woven webs from highly oriented melt blo

1986-10-09

1988-03-15

Lowe, James

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Bulk deposition of particles by differential fluid pressure

156167, 156175, 264230, 264DIG48, 264DIG71, B29C 4788

Patent

active

047312157

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 to collection.

REFERENCES:
patent: 2972000 (1961-02-01), Boriolo
patent: 3466210 (1969-09-01), Wareham
patent: 3801400 (1974-04-01), Vogt et al.
patent: 3806289 (1974-04-01), Schwarz
patent: 4032688 (1977-06-01), Pall
patent: 4116738 (1978-09-01), Pall
patent: 4474630 (1984-10-01), Planck et al.

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