Microembossed thin microporous films having improved impact strength and high moisture vapor transmission rates (MVTRs)
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United States of America Patent
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app pub date -
Apr 13, 2000
filing date -
May 15, 1998
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Abstract
Microembossed film products permeable to moisture vapor and which act as barriers to liquid are made by a high speed method. The microembossed microporous films have impact strengths greater than 150 grams according to ASTM D-1709 and high moisture vapor transmission rates (MVTRs) on the order of about 1000 to about 4500 gms/m.sup.2/day according to ASTM E96E.
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