Polyurethane pad covering
AssigneeMinnesota Mining and Manufacturing Company
InventorsRobert J. Wolf, Scott M. Purrington, John M. Brandner, David A. Olson, John F. Reed
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Abstract
A barrier fabric laminate for use as a coating for a gel filled article is provided. The barrier fabric laminate comprises a fluid impermeable film and a polyurethane nonwoven web which has a friction value of less than 200 g and a fabric hand of less than 200 g. The polyurethane web is formed of fibers of less than about 50 .mu.m on average and preferably is formed with a fluorochemical melt additive by sequentially melt blowing the polyurethane web on a heated collecting drum and laminated by a nip formed by a heated nip roller and the collecting drum.
Claims19
A soft conformable barrier fabric laminate comprising a smooth calendared elastic laminate of a fluid impermeable polyurethane film layer and an elastic polyurethane nonwoven fibrous web where the fibers have an average diameter of less than 50 .mu.m and the outer face of the polyurethane nonwoven web has a friction value of less than about 200 g and the fabric hand of the laminate is less than about 200 g which barrier fabric when subjected to Taber Abrasion Testing does not exhibit significant roping or delamination after 100 wear cycles using CS-0 wheels and a 250 g load.
Dependencies are inferred from the claim text.