Meltblown polymeric dispersions.

摘要

This invention relates to the preparation and use of very thin multiconstituent synthetic fibers. In accordance with the present invention, such fibers are produced from dispersions of incompatible polymers by meltblowing said polymeric dispersions. These procedures permit the preparation of very thin and highly attenuated polymeric fibers that contain microfibrils formed of different polymers. The practice of the present invention permits the preparation of nonwoven fabric webs having "customized" properties that make them suitable in a wide variety of applications. Also, microfibrils - which can themselves be used for various purposes - can be isolated from the multicomponent fibers of the present invention.