Abstract: The invention relates to a composition for yarns, fibres or filaments which can be deposited on these yarns, fibres or filaments in order to improve the properties of these yarns, fibres or filaments, in particular the resistance to abrasion. The invention also relates to a process for producing these yarns, fibres or filaments, and also to a rope comprising these yarns, fibres or filaments, and to their use.

Abstract: The invention relates to a filling yarn made of a thermally protected polyamide 66 multifilament for a tire cord fabric.

Abstract: The method for continuous production of a multifilament stretchable weft yarn for tire cord fabric includes swirling polyester-POY-filaments with an initial titre of from 170 to 260 dtex by means of a gas having a pressure of from 0.5 to 3 bar in a swirling nozzle, and immediately thereafter, shrinking with an overfeed of from 40 to 80% at from 220.degree. to 240.degree. C. for at least 0.2 sec to form a stretchable multifilament weft yarn. This weft yarn has a rough surface with non-slip properties, a tenacity of greater than 7 cN/tex, an elongation at break of from 170 to 270% and a thermal shrinkage at 160.degree. C. of from +2% to -2%, measured at 160.degree. C. during 15 minutes at a pretension of 0.1 cN/tex.

Abstract: The invention concerns a polyamide-66-monofilament with improved initial modulus and with a titre of dtex 4 fl-150 fl. The strength of the monofilaments is at least 60 cN/tex for an extension of less than 25% and the specific LASE, in relation to the initial titre at 2% is at least 7.5 cN/tex, at 5% at least 18 cN/tex and at 10% at least 40 cN/tex, and the dry relaxation is less than 25%. The result is an improvement of about 40% in the LASE at 2% and an improvement of about 35% in the wet relaxation compared to standard polyamide (PA 66) monofilament. The precision fabric manufactured from the monofilaments disclosed is particularly suitable for direct use in direct printing onto woven fabrics and hollow articles.

Abstract: A process for the manufacture of a crimped polyester yarn obtained from a polyester partially-oriented yarn comprising fabricating a partially-oriented polyester yarn by a high-speed process, cooling the partially-oriented polyester yarn, cold drawing the cooled yarn, and subjecting the cold drawn polyester yarn to a thermal treatment under tensionless conditions or under controlled overfeed conditions.

Abstract: A method of producing a smooth, cold-drawn multifilament yarn from a polyester POY comprising cold-drawing of the polyester POY to a draw ratio of at least 1.6 and subsequent hot-relaxing the polyester POY under an over-feed of 10 to 20%, and a polyester yarn produced by this method.

Abstract: The invention concerns a crimped Polyester-yarn obtained from cold drawn Polyester-POY as well as a process for its manufacture.For this yarn the stress/strain course between 10 and 30% elongation resulting from the stretch test corresponds to a secant modul of 0-100%. Application in the knitting, weaving and warp knitting.

Abstract: A process is disclosed for production of a heat-treated, coarse fiber of polyester-POY, whereby the fiber is first twisted and then continuously relaxed and tempered at a temperature from 130.degree. to 250.degree. C. to an extent from 20 to 55%. The slide-resistant fiber produced in this manner, displaying an elongation at break from 150 to 350%, a thermal shrink from +6 to -6% can be employed without further pre-treatment as weft yarn for tire cord webs.