Fabric (woven – knitted – or nonwoven textile or cloth – etc.) – Scrim – Woven scrim
Patent
1996-03-20
1998-04-07
Bell, James J.
Fabric (woven, knitted, or nonwoven textile or cloth, etc.)
Scrim
Woven scrim
442 85, B32B 700
Patent
active
057364672
ABSTRACT:
A method for generating a waterproof, vapor-permeable fabric, wherein a coating liquid is applied to a fabric. The coating liquid comprises a solvent medium and a polyvinylacetal which is an acid-catalyzed reaction product of polyvinyl alcohol and one or more aldehydes, ketones or combinations thereof, wherein each aldehyde contains 1 to 18 carbon atoms and each ketone contains 3 to 16 carbon atoms, and wherein about 1% to about 40% of hydroxyl groups on the polyvinyl alcohol are converted to acetal structures. Once the coating liquid is applied, the solvent medium is removed to form the coated fabric.
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