公开(公告)号：US12000071B2

公开(公告)日：2024-06-04

申请号：US17595549

申请日：2020-06-12

Applicant: Solventum Intellectual Properties Company

Inventor： Petra L. Kohler Reidi ,  Saurabh Batra ,  Hannah C. Cohen ,  Semra Colak Atan ,  Naimul Karim ,  Joseph J. Stoffel ,  Joseph A. Dunbar ,  Colby W. Dotseth

IPC: D04H1/56 ,  D01F6/34 ,  D01F8/10 ,  D04H1/4258 ,  D04H1/4291 ,  D04H1/4309

CPC classification number: D04H1/56 ,  D01F6/34 ,  D01F8/10 ,  D04H1/4258 ,  D04H1/4291 ,  D04H1/4309

Abstract: A method of making a nonwoven fiber web comprises: providing a melt-blown nonwoven fiber web comprising bonded primary fibers having an average fiber diameter of 2 to 100 microns, wherein the primary fibers comprise a copolymer comprising divalent hydroxyethylene monomer units and divalent dihydroxybutylene monomer units; opening at least a portion of the melt-blown nonwoven fiber web to provide loose primary fibers; combining the loose primary fibers with secondary fibers; and forming a secondary nonwoven fiber web comprising the primary fibers and secondary fibers. A fiber web preparable according to the method and a multicomponent fiber including a first phase comprising a copolymer comprising divalent hydroxyethylene monomer units and divalent dihydroxybutylene monomer units and a second phase comprising a non-biodegradable polymer.