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Home Vibration and Earthquake Isolation Sound-absorbing-laminate

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 Sound absorbing laminate

Details
Inventors: Haussling, Reinhold;
Assignee:
Primary Examiner: Bell; James J.
Assistant Examiner:
Attorney, Agent or Firm: Price, Heneveld, Cooper, DeWitt & Litton

There are provided laminate structures comprising a reinforcing fibrous mat integrally bonded to a resilient fibrous batt. The mat is preferentially a porous mat of resin-bonded chopped glass fiber. The batt is preferentially a porous bat of natural or synthetic fibers. Preferentially, the laminate comprises a core of resilient fibrous batt sandwiched between two facing sheets of reinforcing fibrous mat, with a decorative cover layer being laminated to the exterior surface of one reinforcing fibrous mat, the whole being bonded together by a thermoset binder into a unitary structure.

DETAILED DESCRIPTION In the present invention, it has been surprisingly found that substantially improved sound absorbing properties can be achieved using a laminate comprising a resilient, porous fibrous core layer, to which is adhered a fibrous, porous reinforcing mat to give the composite strength.
Preferably, adherence is achieved by impregnating the fibrous, porous reinforcing mat with a thermosetting polymer immediately prior to molding the laminate material in a heated mold.
Most preferably, a thermosetting, elastomeric polymer is used.
The resulting three-dimensional panel is porous and has excellent sound absorptive and/or sound deadening properties.
It also has a desirable resilient feel.
These and other objects, advantages and features of the present invention will be more fully understood and appreciated by reference to the written specification and appended drawings.


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