Process for the production of a nonwoven and nonwoven obtained b

Details Process for the production of a nonwoven and nonwoven obtained b Process for the production of a nonwoven and nonwoven obtained b

1997-09-11

2000-05-23

Cole, Elizabeth M.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including components having same physical characteristic in...

442388, 442389, 442403, 442407, B32B 506

Patent

active

06066388&

ABSTRACT:
A nonwoven (1) comprising two outer fiber layers (3, 4) and at least one inner fiber layer (2) having a different composition from that of the outer layers (3, 4). The nonwoven (1) comprises structural fibers (7, 8) and binding fibers (5, 6), said binding fibers (5, 6) at least partially consisting of a polymer with a lower melting point than the structural fibers (7, 8). Said nonwoven (1) is densified by needling on both sides to a given depth while leaving an undensified central region. A method for producing the nonwoven is also disclosed.

REFERENCES:
patent: 3257264 (1966-06-01), Scheuerman
patent: 4445954 (1984-05-01), Adams et al.
patent: 5298319 (1994-03-01), Donahue et al.
patent: 5629005 (1997-05-01), Brassington et al.

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