초록 ▼

A breathable barrier laminate is disclosed having a first film layer comprising a microporous breathable barrier film; a second film layer comprising a breathable filled film which comprises about 50% to about 70% by weight filler and an amorphous polymer such as an elastomeric ethylene polymer havi

A breathable barrier laminate is disclosed having a first film layer comprising a microporous breathable barrier film; a second film layer comprising a breathable filled film which comprises about 50% to about 70% by weight filler and an amorphous polymer such as an elastomeric ethylene polymer having a density less than 0.89 g/cm.sup.3 ; and a third fibrous layer comprising a breathable outer layer, such as a nonwoven web of spunbonded fibers. The multiple layers can be thermally laminated wherein laminate has a peel strength in excess of 200 grams and a WVTR in excess of 300 g/m.sup.2 /day.

대표청구항 ▼

[ We claim:] [1.] 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 an

[ We claim:] [1.] 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.