METHOD FOR MANUFACTURING A WOOD-POLYMER COMPOSITE
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United States of America Patent
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Issued Date -
Apr 11, 2024
app pub date -
Feb 8, 2022
filing date -
Feb 9, 2021
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Abstract
The present invention relates to the manufacturing a wood-polymer composite. It is directed to a method for manufacturing such a composite, including the provision of a wood element (1), the impregnation of the wood element with a lactic acid water-based solution (2), and then the thermal treatment of the impregnated wood element (3) at a heating temperature higher than a nominal temperature where the in-situ polymerization of the lactic acid is initiated, in order both to induce the diffusion of the lactic water-based solution acid water-based solution within the impregnated wood element and to initiate the in-situ polymerization of the lactic acid. According to the invention, the thermal treatment (3) includes the acceleration of the increase of the heating temperature and/or the decreasing of the nominal temperature.
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