Foam treatment
AssigneeAdnovum AG
InventorAlfred E. Lauchenauer
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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.
Claims10
A peroxide bleaching method for a textile substrate, said method comprising the steps:
- (a) providing a substrate having a water content of not more than about 30% below and not more than about 50% above a Foam Transit Water Content applicable to said substrate.
- (b) preparing an alkaline hydrogen peroxide composition;
- (c) preparing a foam of said composition;
- (d) applying said foam to said substrate under pressure;
- and
- (e) subjecting said substrate to a heat treatment process with an active heat transfer medium having a temperature higher than that of said foam-containing substrate.
The method according to clam 1, wherein said heat treatment process comprises removing said composition from said substrate.
Dependencies are inferred from the claim text.