Foam treatment
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United States of America Patent
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-
Feb 27, 1990
Grant Date -
N/A
app pub date -
Dec 12, 1986
filing date -
Apr 23, 1985
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention teaches the treatment of a porous substrate such as a textile material by treating the substrate with a foam, the substrate prior to treatment having a moisture content of up to 130% of the transit water content, forcing the foam into the porous substrate to enable foam transit through said substrate, causing or allowing foam collapse both at the surface interface and at the interior interface and terminating the treatment by removing or deactivating the reagent.
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