Package with high young's modulus yarn and method for winding the yarn package
AssigneeDsm IP Assets B.V.
InventorsEvert Florentinus Florimondus De Danschutter, Herbert Rabe, Carsten Goerke
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Abstract
The invention concerns an improved yarn package and a method winding a package of high Young's modulus yarn. The package has a low normalized standard deviation in unwinding tension and hence is very suitable for converting into a range of yarn constructions and particularly medical products.
Claims17
A package of yarn on a bobbin, wherein the yarn has a Young's modulus of at least 30 GPa and has a width Wyarn, and wherein the bobbin is a cylindrical bobbin and the package has two ends, and wherein the package is an open precision cross winding package or a step open precision cross winding package, and wherein the package has a winding pattern with a δ-value of between 2 Wyarn and 100 Wyarn, and a number of ligatures at each of the two ends of 11 to 19.
A method of winding a package of high Young's modulus yarn, comprising the steps of:
- (a) providing a cylindrical bobbin, and
- (b) winding a yarn with Young's modulus of at least 30 GPa and a width Wyarn onto the bobbin to form a package having two ends, wherein
- the winding is open precision cross winding to result in a winding pattern with a δ-value of between 2 Wyarn and 100 Wyarn, and a number of ligatures at each of the ends of 11 to 19.
Dependencies are inferred from the claim text.