RING SPINNING AND YARN

Japanese Patent JP3685839

B2

PURPOSE: To economically obtain a high-quality spun yarn by condensing a sliver between a multi-stage drafting mechanism outlet and a twist inhibiting nip and passing a fiber strand to a ring spinning device while twisting.
CONSTITUTION: In a ring spinning, a silver 11 having ≤60 mm length is fed from a spinning can, drafted through feed rollers 37 and 37' by a pre-draft zone 23 from 1.1 to 1.3 fold. The drafted sliver is drafted in a continued main draft zone 24 in the whole draft of 60-150 fold, preferably ≥65 fold and 67-110 fold, more preferably 80-100 fold and condensed at an interval of a fixed distance 15 from a nip 14 between a suction roller 25 to form a feed roller and an opposing feed roller 26 to a twist inhibiting nip 16 to form a compact fiber strand of not more than 2.5 millimeters in width. The fiber strand after released from the nip 16 is fed to a ring spinning frame 17 while being twisted to give the objective spun yarn having ≤100 twist factor, hairiness H smaller than Uster 25% curve and both smaller irregularity CV and nep than Uster 25% curve.

WO/1994/004728	IMPROVED METHOD AND APPARATUS FOR OPEN END YARN SPINNING
WO/2002/034977	DEVICE ON A SPINNING MACHINE FOR COMPACTING A FIBRE BUNDLE
WO/2017/155168	MULTI-EFFECT YARN AND MANUFACTURING DEVICE THEREFOR

Angelo Luka
Herbert Starder

JP15500795A

August 24, 2005

June 21, 1995

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Maschinenfabrik Rieter AG

D01H1/02; D01H5/00; D01H5/72; D01H5/74; D01H13/02; (IPC1-7): D01H5/72; D01H1/02; D01H13/02

JP1266226A
JP60209025A
JP2074632A
JP2112429A
JP7003541A
JP6104936B2

Toshio Yano
Toshiomi Yamazaki

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