Laminate structures for acoustical applications and method of ma

Details Laminate structures for acoustical applications and method of ma Laminate structures for acoustical applications and method of ma

1979-11-05

1981-08-11

Van Balen, William J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

156148, 181288, 181290, 181294, 428300, 428301, 428313, B32B 506, B32B 520, B32B 526, E04B 182

Patent

active

042834570

ABSTRACT:
A laminate structure for acoustical applications which comprises a porous, flexible, non-woven, needle punched mat of inherently non-burning, fine glass or other material fibers affixed as a facing to a sound absorbing, flame retardant, flexible backing such as a layer of open cell foam or a mat of glass or mineral fibers. The invention also contemplates the method of manufacture of such a laminate structure. Depending upon the materials used therefor, the facing and the backing may be joined together by needle punching and subsequent chemical bonding, chemical bonding, flame bonding and, in the case of an open cell foam backing, the backing may be foamed in place on the facing forming an intimate bond therewith.

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