ApplicationNo. 06/647311 filed on 09/04/1984
US Classes:428/316.6, Plural void-containing components428/317.1, With component specified as adhesive or bonding agent428/318.4With nonvoid component of specified composition
ExaminersPrimary: Van Balen, William J.
Attorney, Agent or Firm
International ClassesB32B 5/22 (20060101)
B32B 5/32 (20060101)
B32B 27/12 (20060101)
G10K 11/168 (20060101)
G10K 11/00 (20060101)
AbstractA laminate structure with improved acoustical absorption is provided which has a first and a third layer of foamed thermoplastic material and a second layer, intermediate the first and third layers, which is a material having acoustical properties different from the properties of the material of the first and third layers. A portion of the surface area of each layer is adhesively bonded to the adjacent layer. A sheet of paper or fabric is adhesively bonded to at least the outer surfaces of the first and third layers.