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 fibres 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 fibres and 0% to 70% by weight of textile fibres. Process for making the yarns are also described including those using rotor spinning.
Claims12
A yarn comprising a blend of from 30% % to 100% by weight gel-forming fibres and 0% to 70% by weight textile fibres.
A yarn as claimed in any preceding claim wherein the yarn comprises a blend of from 50% to 100% by weight of gel forming fibres with from 0% to 50% of textile fibres.
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.
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.
A yarn as claimed in any preceding claim wherein the gel forming fibres are polysaccharide fibres, chemically modified cellulosic fibres, pectin fibres, alginate fibres, chitosan fibres, hyaluronic acid fibres or fibres derived from gums.
A yarn as claimed in any preceding claim wherein the gel forming fibres are modified cellulose fibres.
A process for making a yarn as claimed in any preceding claim wherein the gel forming fibres are modified gel forming fibres.
Dependencies are inferred from the claim text.