Woven fabric and a method for the production thereof
AssigneeDeutsche Institute fur Textilund Faserforschung Stuttgart
InventorsStefan Schindler, Helmut Weinsdörfer, Jürgen Wolfrum
Life of this patent
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Abstract
A fabric includes mutually transverse thread systems, with at least one of the thread systems including a differential shrinkage yarn C. The shrinkage yarn C has at least one effect component A that irreversibly elongates itself upon heat treatment, and at least one shrinkage component B that shortens itself upon heat treatment. The components A and B are bound together by nodes, wherein the number (y) of nodes per meter in the yarn C is predetermined as a function of the yarn count (x) of the transverse thread system so that the number (y) of nodes exceeds a minimum value and increases proportionally above the minimum value as a function of the yarn count (x).
Claims15
A fabric, comprising:
- mutually transverse thread systems, wherein at least one of said thread systems includes a differential shrinkage yarn C;
- said shrinkage yarn C comprising at least one effect component A that irreversibly elongates itself upon heat treatment, and at least one shrinkage component B that shortens itself upon heat treatment;
- said components A and B bound together by nodes formed by vortical turbulence;
- wherein in said fabric the number (y) of said nodes per meter in said yarn C is predetermined as a function of the yarn count (x) of the transverse thread system so that the number (y) of said nodes exceeds a minimum value and increases proportionally above said minimum value as a function of the yarn count (x);
- and
- wherein the number (y) of nodes per meter as a function of yarn count (x) is expressed as follows:
- y(min)≧98+0.7(x)
- wherein, relative to the finished fabric:
- the node number per meter in said yarn C is “y”, and the yarn count per centimeter is “x”.
A method for production of a fabric of mutually transverse thread systems, wherein at least one of the thread systems includes a differential shrinkage yarn C, the shrinkage yarn C having at least one effect component A that irreversibly elongates itself upon heat treatment, and at least one shrinkage component B that shortens itself upon heat treatment, said method comprising:
- intertwining the components A and B as nodes in the differential shrinkage yarn C by means of an air blast engendered vortex such that, in the finished fabric, a minimum number (y) of nodes per meter in the differential shrinkage yarn C is expressed as y(min)≧98+0.7(x);
- weaving the multi-noded yarn C as a warp yarn without sizing with a weft yarn (S), wherein in the finished fabric the weft yarn (S) has a yarn count (x) per centimeter;
- and
- heat treating the fabric after said weaving.
Dependencies are inferred from the claim text.