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Wood cement board and a manufacturing method thereof

  • US 5,945,044 A
  • Filed: 07/25/1997
  • Issued: 08/31/1999
  • Est. Priority Date: 05/29/1995
  • Status: Expired due to Fees
First Claim
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1. A manufacturing method of a wood cement board comprising the steps of:

  • preparing a raw material mixture containing principally a reinforcing wood material and a cement wherein said raw material mixture has a water content in the range between 35 to 45% by weight by adding water, scattering said mixture on a mold panel to form a mat, and pressing and incubating said mat with said mold panel to harden said mat wherein said reinforcing wood material is treated by a method consisting of;

    treating said reinforcing wood material with an aqueous solution of a mineral acid selected from a group consisting of hydrochloric acid, sulfuric acid, phosphoric acid, and nitric acid and then treating said reinforcing wood material with an alkaline metal silicate to form a silicate gel film on the surface of said reinforcing wood material prior to the preparation of said raw material mixture.

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