Low stress relaxation elastomeric nonwoven webs and fibers

摘要

An elastic nonwoven web is formed from elastic fibers composed of a blend of (1) a styrene-poly(ethylenepropylene)-styrene thermoplastic elastomeric block copolymer or a mixture of a styrene-poly(ethylenepropylene)-styrene elastomeric block copolymer and a styrene-poly(ethylene-butylene)-styrene elastomeric block copolymer, and (2) a tackifying resin in which the elastic nonwoven web has a stress relaxation of less than about 30 percent. The blend used to form the elastic nonwoven web and/or elastic fibers may also include a polyolefin and an extending oil.