Method for impregnation of a part made of plastic material

    公开(公告)号:US10946414B2

    公开(公告)日:2021-03-16

    申请号:US15781895

    申请日:2016-06-29

    Inventor: Nicolas Francois

    Abstract: A method for core impregnation of a finished part made of plastic material with an additive, including: dissolving the additive in a liquid medium to form a solution; placing the plastic part at ambient pressure in a pressure enclosure; hermetically sealing the chamber; impregnating the plastic part with the solution by a fluid at supercritical or near supercritical conditions in the enclosure at a pressure between 3 MPa and 6 MPa, at a temperature between 25° C. and 65° C. for a duration between 1 minute and 15 minutes; releasing the pressure inside the enclosure so that the liquid medium diffuses outside the plastic part and to trap the additive inside the plastic part.

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