Yarn comprising gel-forming filaments or fibres
AssigneeConvatec Technologies Inc.
InventorsWayne Bonnefin, Sarah Wroe, Amelia Prentice
Life of this patent
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Abstract
A yarn comprising gel forming filaments or fibers particularly one used to make a woven or knitted wound dressing or other gelling fabric structure. The invention provides a yarn comprising a blend of from 30% to 100% by weight of gel-forming fibers and 0% to 70% by weight of textile fibers. Process for making the yarns are also described including those using rotor spinning.
Claims17
A yarn comprising a blend of from 30% to 100% by weight gel-forming fibres and 0% to 70% by weight textile fibres, wherein the fibres are rotor spun to produce the yarn, and the yarn has a dry tensile breaking strength of at least about 400 cN, the yarn capable of being converted into a fabric by knitting.
A process for making a yarn comprising gel-forming fibres comprising the steps of:
- blending staple gel-forming fibres optionally with textile fibres;
- carding to form a continuous web;
- drawing the web to produce a sliver and rotor spinning to produce a yarn;
- wherein the yarn has a dry tensile breaking strength of at least about 400 cN.
A process for making a yarn comprising gel forming fibres or filaments, comprising the steps of
- (i) obtaining a yarn of cellulosic filaments or fibres;
- (ii) chemically modifying the yarn to give the yarn gel forming properties,
- wherein the chemically modified yarn has a dry tensile strength of at least about 400 cN, the yarn capable of being converted into a fabric by knitting.
Dependencies are inferred from the claim text.