Impregnation of porous articles
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United States of America Patent
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Jan 19, 1982
Grant Date -
N/A
app pub date -
Jun 24, 1980
filing date -
Jun 24, 1980
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method of impregnating a porous article with impregnant to seal the pores thereof, which comprises placing the article in a vessel, evacuating the vessel to withdraw air from the pores, releasing the vacuum with the pores beneath the surface of a liquid impregnant in the vessel, removing excess impregnant from the vessel, washing excess impregnant from the surface of the article by supplying washing fluid to the vessel, removing the fluid from the vessel, heating the article while still within the vessel to effect curing of the impregnant within the pores, and removing the impregnated article from the vessel.
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