公开(公告)号：US20220228306A1

公开(公告)日：2022-07-21

申请号：US17595549

申请日：2020-06-12

Applicant: 3M INNOVATIVE 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 ,  D04H1/4291 ,  D04H1/4309 ,  D04H1/4258 ,  D01F6/34 ,  D01F8/10

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.

公开(公告)号：US20230054664A1

公开(公告)日：2023-02-23

申请号：US17759342

申请日：2021-01-22

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Mark V. Riofski ,  Ignatius A. Kadoma ,  Mikhail A, Belkin ,  Kristy A. Jost ,  Colby W. Dotseth ,  Kenneth A. Cox ,  Michael P. Mandanas ,  Xiaoling Huang ,  Wei Li Hu

IPC: D01F8/14 ,  D01F8/12 ,  D01D5/34 ,  C08G63/08 ,  C08G63/16 ,  C08L77/00 ,  C08L91/06

Abstract: The present invention is a multi-component fiber includes a core and a sheathing surrounding the core. The core includes a first aliphatic polyester or copolymer of an aliphatic polyester. The sheathing includes a second aliphatic polyester or copolymer of an aliphatic polyester or a polyamide, and a hydrophobic agent. The second aliphatic polyester or copolymer of an aliphatic polyester or a polyamide has a melt flow index of between about 0.5 and about 19.5 g/10 min using a 2.16 Kg weight at 190° C.

公开(公告)号：US20220378621A1

公开(公告)日：2022-12-01

申请号：US17770938

申请日：2020-10-12

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Petra L. Kohler Riedi ,  Saurabh Batra ,  Naimul Karim ,  Joseph J. Stoffel ,  Rajan B. Bodkhe ,  Joseph A. Dunbar ,  Colby W. Dotseth

IPC: A61F13/00 ,  D04H1/4309 ,  D04H1/732

Abstract: A wound dressing material comprises first and second wound-contact scrims, and an antimicrobial layer disposed therebetween. The wound-contact scrims comprise water-sensitive fibers comprising a copolymer comprising divalent hydroxyethylene monomer units and divalent dihydroxybutylene monomer units. The wound dressing material may be contacted with an exposed surface of a wound. A method of making the wound dressing material is also disclosed.

公开(公告)号：US20220280681A1

公开(公告)日：2022-09-08

申请号：US17637784

申请日：2020-09-24

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Petra L. Kohler Riedi ,  Saurabh Batra ,  Naimul Karim ,  Joseph J. Stoffel ,  Rajan B. Bodkhe ,  Joseph A. Dunbar ,  Colby W. Dotseth ,  Semra Colak Atan

IPC: A61L15/44 ,  A61L15/22

Abstract: A wound dressing material comprises a base fiber web, a wound-contact scrim, and an antimicrobial layer. The wound-contact scrim comprises water-sensitive fibers comprising a copolymer comprising divalent hydroxyethylene monomer units and divalent dihydroxybutylene monomer units. The antimicrobial layer is sandwiched between the base fiber web and the wound-contact scrim. The wounds dressing material may be contacted with an exposed surface of a wound. A method of making the wound dressing material is also disclosed.