Laminate structures for acoustical applications and method of making them
AssigneeHuyck Corporation
InventorsRodger E. Kolsky, Raymond Z. Naar
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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.
Claims26
A laminate structure for acoustical applications comprising a facing layer and a backing layer, said facing layer comprising a porous non-woven, needle punched mat of inherently non-flammable, fine fibers chosen from the class consisting of glass and mineral fibers, said backing layer comprising a flame retardant layer chosen from the class consisting of a layer of open cell foam, a glass fiber batt and a mineral fiber batt, said facing and backing layers being bonded together.
A method of making a laminate structure for acoustical applications comprising the steps of providing a facing layer comprising a porous, nonwoven mat of inherently non-flammable fine fibers chosen from the class consisting of glass fibers and mineral fibers, needle punching said facing layer, treating said facing layer with a low flammability resin binder, providing a backing layer comprising a flame retardant layer chosen from the class consisting of a layer of open cell foam, a glass fiber batt and a mineral fiber batt and adhering said facing layer to said backing layer.
Dependencies are inferred from the claim text.