Stentered, bonded, heat-set, non-woven fabric and process for pr

Details Stentered, bonded, heat-set, non-woven fabric and process for pr Stentered, bonded, heat-set, non-woven fabric and process for pr

1980-12-04

1982-08-03

Cannon, James C.

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

156 731, 156 735, 156 93, 156229, 156281, 156290, 156291, 428287, 428288, 428296, 428298, B32B 3108, B32B 3112, B32B 3116, B32B 3126

Patent

active

043428126

ABSTRACT:
A process for producing a non-woven fabric and fabric produced thereby, the process comprising (1) forming a stack of three or more superimposed fibrous shims, in at least one of the shims the fibres being oriented predominantly in a first direction, corresponding to the machine direction of the shim, and in at least one of the other shims the fibres being oriented predominantly in a second direction, corresponding to the machine direction of the shim, which is inclined at an acute angle to an imaginary line which is orthogonal to the first direction, and in at least one of the other shims the fibres being oriented in a third direction, corresponding to the machine direction of the shim, which is inclined at an obtuse angle to an imaginary line which is orthogonal to the first direction, (2) bonding the fibrous shims together, (3) subjecting the bonded fabric so formed to a stentered operation in a direction orthogonal to the first direction which causes the bonded shims to expand orthogonally to the first direction and to contract in the first direction, and (4) heat setting the bonded shims while they are being stentered.

REFERENCES:
patent: 3523059 (1970-08-01), Coates
patent: 3531347 (1970-09-01), Stultz

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