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Multi-component composite material and method for producing a laminar multi-component composite material from a halogen compound-free flexible plastic

  • US 5,997,782 A
  • Filed: 06/17/1996
  • Issued: 12/07/1999
  • Est. Priority Date: 10/17/1994
  • Status: Expired due to Fees
First Claim
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1. A method for producing a laminar, heterogeneous multi-component composite material comprisingat least one homogeneous and halogen compound-free polymer andat least one laminar, fiber-containing layer having a printable upper surface, said fiber-containing layer being formed of non-woven fibers having interstices therebetween, the method comprising the steps of, in sequence:

  • (a) melting a first polymer in the form of a melted first polymer layer of defined thickness,(b) applying the melted first polymer layer onto the upper surface of a first fiber-containing layer simultaneously with introducing the melted first polymer layer and first fiber-containing layer into a gap between two rollers of a rolling mill,(c) pressing the two layers together in the rolling mill so as to force the melted first polymer from a position on the upper surface of the first fiber-containing layer, and into the interstices of the first fiber-containing layer up to a pre-selected depth of the first fiber-containing layer, and(d) cooling to form a positive adhesive bond between the first polymer and the fibers to form a first composite material.

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