Press-cushion sheet

Details Press-cushion sheet Press-cushion sheet

1991-11-13

1992-06-09

Bell, James J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

139420R, 428257, 428260, 428901, 428902, B32B 700

Patent

active

051205971

ABSTRACT:
A press-cushion sheet having an enhanced durability in practical use comprises a three- to six-ply woven fabric composed of heat resistant fiber spun warp and weft yarns with a cotton count of 2 to 10 and having warp and weft densities of 80-170 yarns/2.54 cm and 50-160 yarns/2.54 cm respectively, the individual warp yarns in the fabric are bent in the form of waves and have a bending coefficient (BC) of from 1 to 30 determined in accordance with the equation (I): ##EQU1## wherein d represents a thickness of the fabric and n represents the wave number of the warp yarns bent in the form of waves, per 10 cm of the fabric, and optionally, a heat-resistance resin impregnated in the fabric.

REFERENCES:
patent: 4922969 (1990-05-01), Campman et al.

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