Method for the production of a needled nonwoven fabric

Details Method for the production of a needled nonwoven fabric Method for the production of a needled nonwoven fabric

1977-12-13

1980-04-22

Rimrodt, Louis

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Noninterengaged fiber-containing paper-free web or sheet...

28107, 28112, 156148, 264 25, 264126, 425 831, 428301, B29D 2700, D04H 1800

Patent

active

041996445

ABSTRACT:
A nonwoven fabric is produced from a batt of staple fibers by passing the unneedled batt of staple fibers to at least two needling zones, each needling zone having a plurality of needles which move in a reciprocating motion having a first needling direction and a second needling direction, the needles in a first needling zone having barbs which catch staple fibers of the batt primarily when the needles move only in the first needling direction and the needles in a second needling zone having barbs which catch staple fibers of the batt when the needles move in both the first needling direction and the second needling direction.

REFERENCES:
patent: 461602 (1891-10-01), Boult
patent: 3432896 (1969-03-01), Meagher
patent: 4042655 (1977-08-01), Platt et al.

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