초록 ▼

The present invention is directed to cloth-like, liquid-impervious, breathable composite barrier fabrics. More particularly, the present invention is directed to cloth-like, liquid-impervious, breathable film-nonwoven composite fabrics having biological liquid barrier capabilities for use as, for ex

The present invention is directed to cloth-like, liquid-impervious, breathable composite barrier fabrics. More particularly, the present invention is directed to cloth-like, liquid-impervious, breathable film-nonwoven composite fabrics having biological liquid barrier capabilities for use as, for example, sterilization wrap, surgical draping, surgical gowns, cover garments, such as over-suits, and the like.

대표청구항 ▼

[ We claim:] [1.] A cloth-like, liquid-impervious, breathable barrier material comprising:at least one nonwoven layer,a microporous, film layer comprising about 40 to about 70% filler by weight and about 30% to about 60% of a polyolefin polymer, or blend thereof and having a thickness of 0.5 mil or

[ We claim:] [1.] A cloth-like, liquid-impervious, breathable barrier material comprising:at least one nonwoven layer,a microporous, film layer comprising about 40 to about 70% filler by weight and about 30% to about 60% of a polyolefin polymer, or blend thereof and having a thickness of 0.5 mil or less bonded to said nonwoven layer to form a laminate, said laminate being breathable as measured by WVTR of at least 1,000 gm/m.sup.2 /day and having a basis weight of about 2.0 ounces per square yard or less, a peak energy in the machine direction of at least 15 inch-pounds, a peak strain in the machine direction of at least about 35 percent, a peak energy in the cross machine direction of at least about 19 inch-pounds, a peak load in the cross machine direction of at least about 19 inch-pounds, a peak strain in the cross machine direction of at least about 70 percent, a hydrohead of about 250 mbars or more, a cup crush peak load of less than about 180 grams and a cup crush energy of less than about 3,000 grams per millimeter, a drape stiffness in the machine direction of <4.0 centimeters and a drape stiffness in the cross machine direction of <3.0 centimeters.