SUPER-HIGH-MOLECULAR-WEIGHT POLYOLEFIN YARN, METHOD FOR PRODUCING SAME, AND DRAWING DEVICE

WIPO Patent Application WO/2012/039188

A1

When determined as the maximum peak temperature under conditions of a temperature elevation speed of 20ºC/minute by a differential scanning calorimeter (DSC), the melting point of a drawn super-high-molecular-weight polyolefin yarn of the present invention is higher than the melting point of the yarn before drawing. In a production method of the present invention, a passage opening (14) for yarn is hollow, a drawing tank (3) in which hot liquid circulates is disposed in a drawing zone in a jacket part (13), and the yarn is heated and drawn while being passed, contact-free, through the passage opening (14). A drawing device of the present invention comprises means (1) for feeding yarn, the drawing tank (3) for heating and drawing yarn, and means (5) for reeling in the drawn yarn, and the yarn passage opening (14) of the drawing tank (3) is hollow and the hot liquid circulates in the jacket part (13). A drawing method and a drawing device are therefore provided with which it is possible to draw, with stability even at a high draw ratio, super-high-molecular-weight, high-strength polyolefin yarn, and yarn obtained by the drawing method is also provided.

HIROSE MASAYUKI
YASUNAGA ATSUNORI
UESUGI SHOJI

PCT/JP2011/066397

March 29, 2012

July 20, 2011

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GOSEN KK (JP)
HIROSE MASAYUKI
YASUNAGA ATSUNORI
UESUGI SHOJI

D01F6/04; D02J1/22; D02J13/00; D04C1/02; D04C1/12

JPS62184112A	1987-08-12
JPS60194109A	1985-10-02
JPH0931786A	1997-02-04

None

IKEUCHI SATO & PARTNER PATENT ATTORNEYS (JP)
Patent business corporation Ikeuchi and Sato and partners (JP)

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