Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond
Patent
1994-03-18
1995-02-28
Bell, James J.
Stock material or miscellaneous articles
Structurally defined web or sheet
Discontinuous or differential coating, impregnation or bond
428297, 428298, 4283044, 4284233, 428904, 427245, 427246, B32B 326
Patent
active
053936000
ABSTRACT:
A highly flexible leather-like sheet material has a base layer of a fibrous aggregate containing a first polymer principally containing a first elastic polymer and, provided on the surface thereof, a coating layer of a second polymer principally comprising a second elastic polymer, said coating layer containing the two layers of a wet-formed porous intermediate coating layer integrated with the base layer and having a thickness of 10 to 40 .mu.m and having continuous pores with a maximum pore diameter of 1 to 30 .mu.m and a dry-formed porous surface coating layer having a thickness of 20 to 80 .mu.m and having continuous pores with a maximum pore diameter of substantially not more than 20 .mu.m and an average pore diameter of, preferably, 1 to 5 .mu.m obtained by extracting off fine particles, the two layers both containing a softening agent.
REFERENCES:
patent: 4601951 (1986-07-01), Fertell et al.
patent: 4959264 (1990-09-01), Dunk et al.
patent: 5151240 (1992-09-01), Asano et al.
patent: 5156900 (1992-10-01), Nishimura
patent: 5252379 (1993-10-01), Huribayashi et al.
Akamata Kazundo
Omura Yutaka
Bell James J.
Kuraray Co. Ltd.
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