Polyester heat bonded product

Details Polyester heat bonded product Polyester heat bonded product

1988-12-05

1990-02-27

McCamish, Marion C.

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

156 60, 156285, 428294, C09J 502

Patent

active

049045237

ABSTRACT:
Disclosed is a nonwoven fabric which is a nonspunbonded fabric and has a surface free of standing fibers and a method for making the same. The fabric is useful as a support for case on coatings to form a composite for TFC membrane filters. The fabric is formed of a first layer having binder fiber and matrix fiber. A second layer of 100 percent binder fiber is cast thereon. The binder fiber has a softening point lower than the melting point of the matrix fiber. The first and second layers are bonded by heat and pressure to form the fabric.

REFERENCES:
patent: 3770562 (1973-11-01), Newman
patent: 3837995 (1974-09-01), Floden
patent: 4039711 (1977-08-01), Newman
patent: 4180611 (1979-12-01), Schultheiss et al.
patent: 4363682 (1982-12-01), Thiebault
patent: 4377615 (1983-03-01), Suzuki et al.
patent: 4424250 (1984-01-01), Adams et al.
patent: 4472229 (1984-09-01), Martin

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