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Sheet-like material, heat-insulating material derived therefrom and methods of manufacturing same

  • US 4,433,020 A
  • Filed: 10/21/1982
  • Issued: 02/21/1984
  • Est. Priority Date: 10/22/1981
  • Status: Expired due to Fees
First Claim
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1. A sheet-like material comprising 80 to 97% by weight of a non-inflammable fibrous substance, and 3 to 20% by weight of a binder consisting essentially of a thermoplastic resin, said fibrous substance being orientated at an angle of 3°

  • to 80°

    , said material having an intermediate layer containing at least 2% by weight of said binder and at least 25% of the average quantity of said binder in said material.

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