DURABLE MULTILAYER NONWOVEN MATERIALS.

摘要

A durable multi-layered meltblown fiber web is provided having a first layer of fine crystalline polypropylene fibers and a second layer of fibers bonded directly to the first layer of fibers. The second layer of fibers is formed from a blend of a crystalline polyolefin and an amorphous polyalphaolefin and can be of a similar size or larger average size than the fibers of the first layer. The multilayer meltblown fiber webs are durable, having a reciprocating abrasion resistance in excess of 1000 cycles, and can also provide a highly pliable web having improved drape.