Microporous breathable elastic film laminates, methods of making same, and limited use or disposable product applications
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United States of America Patent
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Sep 18, 2007
Grant Date -
May 12, 2005
app pub date -
Aug 13, 2004
filing date -
Nov 7, 2003
priority date (Note) -
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Abstract
A breathable, elastic film/support layer laminate includes a thermoplastic elastomer film sheet of a thermoplastic elastomer and a filled semi crystalline predominantly linear polymer. The film includes between about 25 and 70 weight percent filler, between about 5 and 30 by weight percent semi-crystalline linear polymer, and between about 15 and 60 by weight percent elastomeric polymer. The filler is closely associated with the semi-crystalline linear polymer. The film demonstrates a load loss value at a 50 percent elongation of less than 50 percent, and a breathability of greater than 100 g/m.sup.2/24 hours and is laminated to a nonwoven layer.
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