DRAWING DEVICE AND DRAWING METHOD

A drawing device and a drawing method using the drawing device for drawing a drawable material such as a fiber at a high draw ratio by multi-stage drawing are provided. Disclosed are (1) a drawing device including at least a pair of tapered rollers each having a taper ratio [represented by (² - ±)/2...

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Bibliographische Detailangaben
Hauptverfasser:	ITAMI, TERUYUKI, IKIMINE, TOSHIAKI, NISHIUMI, YOHEI, KAMADA, HIDEKI, SHIBATA, SHOHEI, KASHIWAGI, TOSHIJI
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS,ROPES OR THE LIKE MECHANICAL FINISHING OF YARNS OR ROPES MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OFARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES ORRIBBONS NATURAL OR ARTIFICIAL THREADS OR FIBRES PERFORMING OPERATIONS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS SPINNING TEXTILES TRANSPORTING WARPING OR BEAMING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL YARNS
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Beschreibung
Zusammenfassung:	A drawing device and a drawing method using the drawing device for drawing a drawable material such as a fiber at a high draw ratio by multi-stage drawing are provided. Disclosed are (1) a drawing device including at least a pair of tapered rollers each having a taper ratio [represented by (² - ±)/2L, where ² denotes a maximum diameter of the roller, ± denotes a minimum diameter of the roller, and L denotes a length of a tapered portion] in a range of 0.035 to 0.50, and (2) a drawing method using the same device, comprising spanning the pair of rollers with the drawable material such as a yarn; and drawing the drawable material while spanning the rollers with the drawable material a plurality of times from a small-diameter side of the tapered rollers to a large-diameter side of the tapered rollers.