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Method of molding powdered plant fiber into high density materials

  • US 5,855,832 A
  • Filed: 06/27/1996
  • Issued: 01/05/1999
  • Est. Priority Date: 06/27/1996
  • Status: Expired due to Term
First Claim
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1. A method of manufacturing a high density plant fiber material comprising the steps of:

  • (a) introducing powdered plant fiber particles containing protolignin and with a diameter less than 3000 microns into a mold;

    (b) heating the contents of the mold to a temperature between 50 degrees C. to 220 degrees C.;

    (c) compressing the powdered contents of the mold to an average density of at least 50 pounds per cubic foot;

    (d) curing the compressed contents within the mold; and

    (e) releasing the compressed contents from the mold.

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