Yarn with the appearance of a spun yarn, made from polyamide-based fibres
AssigneeRhone-Poulenc Fibres
InventorsEmmanuel Jung, Christine Raffin
Life of this patent
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Abstract
A yarn with the appearance of a spun yarn, made from polyamide-based filaments. The yarn has crimped bulked parts, and parts which are both tight and interlaced, has a cohesion factor lying between 90 and 140 knots/meter, a Young's modulus lying between 100 and 150 cN/tex, and a difference in orientation between the two populations of filaments, evaluated by measurement of the sonic modulus, lying between 25 and 50 cN/tex. The textile articles obtained from this yarn simultaneously have a soft feel, bulk and strength.
Claims9
A spun yarn made of polyamide filaments, said yarn being without twist, spirals or loops, consisting of two populations of filaments differing in denier, filament number and orientation, and having randomly alternating crimped bulked parts and tight parts of different lengths l.sub.1 and l.sub.2, l.sub.1 being the length of the bulked parts and l.sub.2 being the length of the tight parts, wherein:
- the tight parts are both interlaced and entangled,
- the cohesion factor lies between 90 and 140 knots/m,
- the Young's modulus lies between 100 and 150 cN/tex, and
- the difference in the sonic modulus between the two populations of filaments is between 25 and 50 cN/tex., and represents the difference in orientation therebetween.
A spun yarn made of polyamide filaments, said yarn being without twist, spirals or loops, consisting of two populations of filaments differing in denier, filament number and orientation, and having randomly alternating crimped bulked parts and tight parts of different lengths l.sub.1 and l.sub.2, l.sub.1 being the length of the bulked parts and l.sub.2 being the length of the tight parts, wherein:
- the tight parts are both interlaced and entangled,
- the cohesion factor lies between 90 and 140 knots/m,
- the Young's modulus lies between 100 and 150 cN/tex,
- the difference in the sonic modulus between the two populations of filaments is between 25 and 50 cN/tex, and represents the difference in orientation therebetween,
- the filaments of low denier having a denier between 1 and 2.5 dtex, and
- the filaments of higher denier having a denier between 3 and 5 dtex.
Dependencies are inferred from the claim text.