Cleaning and liquid contact with solids – Processes – Including forming a solidified or hardened coating for cleaning
Patent
1989-01-23
1990-12-25
Pal, Asok
Cleaning and liquid contact with solids
Processes
Including forming a solidified or hardened coating for cleaning
428346, 428351, 4283184, 4289044, 156344, B08B 700, C09J 702
Patent
active
049795260
ABSTRACT:
Wallpaper is removed by contacting the wallpaper with a liquid composition which permeates the paper and softens the adhesive which holds the wallpaper to a wall. A vapor barrier is applied to the liquid contacted wallpaper which prevents evaporation of the liquid and maintains continuous contact between the liquid and the wallpaper until the adhesive is softened, after which the wallpaper is stripped away from the wall surface. An article of manufacture for protecting one embodiment of this method includes a vapor barrier sheet having open-celled interstices on one side thereof and a dry composition carried in the interstices. The dry composition forms a gel when contacted with a paper-permeating, adhesive-softening liquid.
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"The Hang of Wallpapering", Tom Riley, Popular Mechanics, Mar. 1954, pp. 177-182.
"How to Remove Old Wall Paper", Scientific American, Jan. 25, 1913.
Ojan Ourmazd S.
Pal Asok
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