Patent ID: 8506871
Filing Date: 2013-08-13
Classification: B01D,D01D,D01F,D04H,Y10T

Abstract:
1. A process for forming a monocomponent nonwoven web comprising flowing fiber-forming material through a single die cavity of a single melt-blowing die, the single die cavity having larger size orifices and at least five times as many smaller size orifices to form filaments, using air or other fluid to attenuate the filaments into fibers and collecting the attenuated fibers as a nonwoven web containing a meltblown bimodal mass fraction/fiber size mixture of intermingled continuous microfibers and larger size fibers of the same polymeric composition, wherein there are at least five times as many microfibers as larger size fibers and wherein a histogram of the mass fraction of fibers vs. fiber size exhibits a larger size fiber mode greater than 10 μm.