D - Textiles – Paper – 01 – H
Patent
D - Textiles, Paper
01
H
D01H 1/115 (2006.01) D01H 5/22 (2006.01) D02G 3/38 (2006.01)
Patent
CA 2286735
A drafting and spinning apparatus is disclosed that produces highly uniform yarns with improved mechanical properties. The apparatus comprises a plurality of pairs of drafting rolls (26, 28, 30, 32, 34, 36, 38, 40) for drawing a sliver (22) formed of one or more types of staple fibers, each fiber type having a predetermined effective fiber length. The plurality of pairs of drafting rolls comprises at least two pairs of intermediate rolls (30, 32, 34, 36), with the distances between the nips of adjacent intermediate roll pairs being no more than the effective fiber length of the longest fiber type in the sliver. The apparatus further includes means (15) for spinning the sliver into yarn at a take-up speed of greater than 150 meters/minute.
La présente invention concerne un appareil d'étirage et de filage produisant des fils d'une grande uniformité aux propriétés mécaniques améliorées. Ledit appareil comprend plusieurs paires de cylindres d'étirage (26, 28, 30, 32, 34, 36, 38, 40) destinés à étirer un ruban (22) formé d'au moins un type de fibres discontinues, chaque type de fibre possédant une longueur de fibre effective prédéterminée. Les différentes paires de cylindres d'étirage comprennent au moins deux paires de cylindres intermédiaires (30, 32, 34, 36), les distances entre les pinces des paires de cylindres intermédiaires adjacentes étant inférieures ou égales à la longueur de fibre effective du type de fibre le plus long du ruban. L'appareil de la présente invention comprend en outre un moyen (15) destiné à filer le ruban à une vitesse de bobinage supérieure à 150 mètres par minute.
Crews Rudy Lee
Fletcher Jesse Robert
Moore Winston Patrick
Scheerer Todd Joseph
Sim & Mcburney
Wellman Inc.
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