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Fiber Materials with Improved Properties for Use in Wound Treatment:

U.S. Patent No. 11,559,440

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By: Tara Olivo

Associate Editor at Nonwovens Industry, Rodman Media

Erik Carlsson, Särö, Sweden.
Assigned to Mölnlycke Health Care AB, Gothenburg, Sweden.

Filed: 1/17/18
Issued: 1/24/23

A fiber material comprising: a substrate of non-ionic, nonwoven fibers, at least one additional component, which is an agent that comprises at least one group capable of forming a hydrogen bond, wherein the non-ionic, nonwoven fibers are crosslinked by the agent; wherein the amount of agent in the fiber material, relative to the overall weight of the fiber material, is from 1% w/w to 40% w/w, wherein the substrate of non-ionic, nonwoven fibers comprises polyvinyl alcohol (PVA), and/or a polyurethane polymer with polyethylene glycol (PEG) and/or polypropylene glycol functionalities, and/or copolymers thereof.
A process for making a fiber material comprising the following steps: providing at least one non-ionic fiber material comprising polyvinyl alcohol (PVA), and/or a polyurethane polymer with polyethylene glycol (PEG) and/or polypropylene glycol functionalities, and/or copolymers thereof, which is present as a nonwoven substrate; bringing said at least one non-ionic fiber material into contact with at least one agent that comprises at least one group capable of forming a hydrogen bond, thereby crosslinking the non-ionic fiber material by the agent; wherein the agent is present in an amount from 1% w/w to 40% w/w in the made fiber material, relative to the overall weight of the fiber material.

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