Needled nonwoven material and method for making same

Details Needled nonwoven material and method for making same Needled nonwoven material and method for making same

1975-01-15

1976-11-30

Powell, William A.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

28 7217, 28 722R, 156148, 156282, 156324, 156229, 156306, 264103, 264126, 428235, 428297, 428288, 428300, 428296, B29C 2700, B32B 3100

Patent

active

039947599

ABSTRACT:
Heat shrinkable fibers are laid down on a backing element, needle-punched and thereafter heated on one surface of the needle-punched fabric in a relaxed condition to a temperature to fuse at least a portion of the fibers adjacent the heated surface and shrink said fibers and first material surface relative to the opposed surface for providing a nonwoven material having a randomly uneven surface. In another embodiment, the backing element is eliminated.

REFERENCES:
patent: 2891279 (1959-06-01), Neumann
patent: 2966439 (1960-12-01), Sorel
patent: 3484916 (1969-12-01), Johnstone
patent: 3570085 (1971-03-01), Heineman
patent: 3575178 (1970-10-01), Parlin et al.
patent: 3622422 (1971-11-01), Newman
patent: 3660555 (1972-05-01), Rains et al.
patent: 3819465 (1974-06-01), Parsons et al.
patent: 3837995 (1974-09-01), Floden

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