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US 11,980,693 B2Granted
Composite materials in wound treatment
AssigneeMölnlycke Health Care AB
InventorsEric S. Gardiner, Magnus Paledzki
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Abstract
Disclosed is a method for making a composite material, which is of particular use in wound treatment. The composite material has a hydrophilic polyurethane foam material with a first polyurethane polymer; a hydrophilic fiber material having a second polymer, wherein said second polymer is not a polyurethane polymer and wherein said fiber material is capable of absorbing and retaining a fluid. The first polymer is covalently bonded to the second polymer.
Claims18
A method for producing a composite material, comprising the steps of:
- (i) preparing an aqueous mixture comprising a prepolymer;
- (ii) casting said aqueous mixture from step (i) onto a carrier material;
- (iii) applying, before said aqueous mixture is essentially completely cured, a layer of a fiber material capable of absorbing and retaining a liquid, on top of said aqueous mixture as cast onto said carrier material;
- and
- (iv) allowing said aqueous mixture to essentially completely cure, thereby producing the composite material, wherein the composite material comprises a foam layer covalently bonded to said layer of a fiber material.
2 more elements
Dependencies are inferred from the claim text.