Gas plasma treatment for water and oil proofing of fabrics and paper
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United States of America Patent
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Jul 12, 1994
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N/A
app pub date -
Apr 6, 1992
filing date -
Apr 6, 1992
priority date (Note) -
Expired
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Abstract
An improved method for imparting water and oil repellent surface properties to fabrics or paper includes pretreatment in a low pressure oxygen plasma in the presence of water vapor followed by plasma polymerization of methane in a high frequency glow discharge carried out in the same treatment chamber. The resultant polymer film formed on the material surface resists separation from the treated material even after prolonged immersion in water. The method is characterized by use of low cost and readily available starting monomer, by use of a single treatment unit for all stages of the process, reduced energy requirements and treatment time, and improved results over conventional processes.
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