Patent ID: 6045900
Filing Date: 2000-04-04
Classification: A61F,B32B,Y10T

Abstract:
A breathable barrier laminate comprising:a breathable base film comprising a thermoplastic polymer, said base film comprising a microporous olefin polymer film having a WVTR of at least 300 g/m.sup.2 /day;a breathable intermediate microporous film comprising an amorphous polymer and at least about 50% by weight filler, wherein said amorphous polymer comprises a copolymer of ethylene and an alpha-olefin and has a density less than 0.89 g/cm.sup.3 and further wherein said intermediate film has a first and second side wherein said first side is bonded to said base film; anda breathable fibrous layer bonded to the second side of said intermediate film wherein said laminate has a peel strength of at least 200 g and further wherein said laminate has a WVTR of at least about 300 g/m.sup.2 /day and a hydrohead of at least 50 mbar.