Tubular nonwoven fabric comprising circumferentially oriented pa

Details Tubular nonwoven fabric comprising circumferentially oriented pa Tubular nonwoven fabric comprising circumferentially oriented pa

1993-07-15

1995-07-04

Withers, James D.

Stock material or miscellaneous articles

Hollow or container type article

Polymer or resin containing

428 361, 428286, 428294, 428298, B29D 2200, B32B 2700

Patent

active

054298474

ABSTRACT:
Disclosed are a process for producing a tubular nonwoven fabric and tubular nonwoven fabrics produced by the same. In the process, a web is formed on a first rotating cylinder by catching fibers carried to the surface of the first rotating cylinder by a fluid, the web is transferred to a second rotating cylinder, a tube of the transferred web is formed on and around the second rotating cylinder, and the tube is drawn in the axial direction of the second rotating cylinder to form a tubular nonwoven fabric. The tubular nonwoven fabric with a high unit weight can be produced without elongating or breaking the nonwoven fabric, and the diameter of the tubular nonwoven fabric can be freely changed.

REFERENCES:
patent: 3303010 (1964-02-01), Copenhefer
patent: 4116738 (1978-09-01), Pall
patent: 4214612 (1980-07-01), de Putter
patent: 4240864 (1980-12-01), Lin
patent: 4731215 (1988-03-01), Schwarz

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