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METHOD AND APPARATUS FOR IMPREGNATING THE SURFACE REGION OF AN ARTICLE

  • US 20190329287A1
  • Filed: 04/15/2019
  • Published: 10/31/2019
  • Est. Priority Date: 04/30/2018
  • Status: Abandoned Application
First Claim
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1. A method of impregnating a surface region of an article made from a porous material, the method comprising the steps of:

  • i) immersing the article in a liquid impregnating material;

    ii) withdrawing the article from the liquid impregnating material into a transfer region;

    iii) transferring the article from the transfer region into a removal region separated from the transfer region by a separation gas flow; and

    iv) displacing excess impregnating material (12) from the surface of the article by exposing the article to the separation flow and a flow of gas in the removal region,wherein the separation gas flow is directed generally horizontally across an opening of the removal region; and

    ,the flow of gas to remove excess impregnating material is directed obliquely with respect the separation gas flow.

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