Composite thermoplastic sheets including natural fibers

  • US 7,431,980 B2
  • Filed: 11/08/2004
  • Issued: 10/07/2008
  • Est. Priority Date: 11/08/2004
  • Status: Active Grant
First Claim
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1. A thermoplastic composite sheet material comprising:

  • a permeable core comprising a thermoplastic resin material reinforced with a web of reinforcing fibers, and discontinuous natural fibers, said permeable core having a density from about 0.1 gm/cc to about 1.8 gm/cc, said permeable core including a surface region, said composite sheet moldable into predetermined shapes;

    said natural fibers selected from the group consisting of kenaf fibers, jute fibers, flax fibers, hemp fibers, sisal fibers, coir fibers, and mixtures thereof.

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