Dsm IP Assets B.v.

Truetzschler Gmbh & Co. Kg

Trutzschler Gmbh & Co Kg

Martinus Joseph Maria Keulers

Roman Stepanyan

Hao Chen

Lassad Nasri

Hendricus Franciscus Aussems

Joanna Biernat

A process and an apparatus for production of a low-shrinkage aliphatic polyamide fibre, in which polyamide is extruded through a spinneret to form filaments, then cooled and combined to form at least one yarn. The at least one yarn is subjected to drawing between the spinneret and a pair of inlet rolls, then in a further multi-stage drawing step is subjected to 4-fold to 6-fold drawing by pairs of draw rolls. The pairs of draw rolls successively heat the yarn and at least the last pair of draw rolls has a temperature of 5&#xb0; C. to 20&#xb0; C. below the melting point of the yarn. The yarn is relaxed by from 6% to 10% in a subsequent at least three-stage relaxation zone and is kept in a temperature range of 5&#xb0; C. to 15&#xb0; C. below the melting point of the yarn, and is subsequently wound up on a reel device. The invention further relates to a yarn composed of a low-shrinkage aliphatic polyamide fibre.

Process and apparatus for the production of a low-shrinkage aliphatic polyamide yarn, and low-shrinkage yarn

The invention relates to a yarn comprising a copolyamide in an amount of at least 90 wt % with respect to the total weight of the yarn, which copolyamide comprises a) at least 95 wt % by weight with respect to the total weight of copolyamide, monomeric units derived from hexamethylene diamine and adipic acid and b1) cyclic monomeric units derived from a diamine X, and cyclic monomeric units derived from a diacid Y, and/or b2) cyclic monomeric units derived from an amino acid Z, in which the summed amount of monomeric units derived from X,Y and Z is between 0.1 to 4.5 wt % by weight with respect to the total weight of the copolyamide and wherein the yarn has a tensile strength of at least 80 cN/tex as measured according to ASTM D885-04. The invention also relates to a process for preparing the yarn.

High strength polyamide yarn

Sports clothing, protective clothing, clothing for body shaping and clothing with a medical function, which clothing comprises at least one fabric comprising elastic fibers, which elastic fibers are produced from a polymer composition comprising a copolymer containing 20-80 wt. % of monomeric units of a dimerized fatty acid or a derivative thereof and further monomer units of at least one dicarboxylic acid and at least one diol.

Clothing comprising a fabric, comprising elastic fibers

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Echt, Netherlands

Martinus Joseph Maria Keulers