Microporous breathable elastic film laminates, methods of...

Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor

Reexamination Certificate

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C156S244110, C428S317900, C428S323000, C428S050000, C428S910000, C524S425000

Reexamination Certificate

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10918553

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/m2/24 hours and is laminated to a nonwoven layer.

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