Synthetical technical multifilament yarn and a process for the manufacture thereof
AssigneeAkzo N.V.
InventorsJohannes H. van Leeuwen, Karl A. Weigand
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Abstract
The invention relates to a synthetic technical multifilament bicomponent yarn, which is particularly meant for use in safety belts, ropes and nets. The bicomponent yarn is preferably of the sheath-core type of which only the core contains a black pigment composed of carbon black particles and/or a reddish pigment composed of iron oxide particles and/or a whitish pigment composed of titanium dioxide particles of the rutil type, which pigments are insoluble in the polymeric material. The tenacity of the yarn may be about 70-85 cN/tex and the elongation at rupture of 7 to 15%.
Claims23
A synthetic filament yarn, comprising a plurality of filaments of a melt-spinnable polymeric material, each of said filaments having a core portion and a sheath portion surrounding the core portion so as to be concentric therewith, said core portion including at least one pigment selected from the group consisting of carbon black particles, iron oxide particles and titanium dioxide particles;
- said pigment being present in an amount of 0.2 to 2% by weight based upon the weight of the core portion;
- said sheath portion being characterized in that it is substantially pigment free;
- said yarn being characterized in that it has a total linear density in the range of Decitex 300 to 5000, a tenacity in the range of 50 to 85 cN/tex and an elongation at rupture of 7 to 15%.
Dependencies are inferred from the claim text.