公开(公告)号：JP2019026956A

公开(公告)日：2019-02-21

申请号：JP2017146286

申请日：2017-07-28

Applicant: TORAY INDUSTRIES

Inventor： ENDO MASAKI ,  KATSUTA HIROSHI ,  HANE RYOICHI ,  FUNATSU YOSHIJI ,  NISHIMURA MAKOTO

IPC: D01F6/04 ,  D04H3/007 ,  D04H3/16

Abstract: 【課題】低コストで、嵩高性に優れた捲縮繊維およびスパンボンド不織布を提供する。また、前記捲縮繊維を、工業的に生産性と安定性に優れた方法で製造することができる捲繊維の製造方法を提供する。【解決手段】ポリオレフィンを主成分とする繊維であって、実質的に単一原料で構成されており、繊維長さ方向に対して垂直な断面の形状が円型であり、かつ、繊維断面の配向パラメータの差が0.3以上である捲縮繊維、およびそれを含んでなるスパンボンド不織布である。また、ノズルから吐出させた繊維群に対し、冷却風を相対する方向から当てて冷却する、前記捲縮繊維を製造する方法であって、相対する冷却風の温度の差が5℃以上である、捲縮繊維の製造方法である。【選択図】図1

公开(公告)号：JP2003089917A

公开(公告)日：2003-03-28

申请号：JP2001285199

申请日：2001-09-19

Applicant: TORAY INDUSTRIES

Inventor： FUNATSU YOSHIJI ,  TAKARADA WATARU ,  TANIGUCHI ATSUSHI

IPC: D01D4/02

Abstract: PROBLEM TO BE SOLVED: To provide a method for stably producing a thermoplastic synthetic fiber having improved mechanical characteristic and excellent qualities and yarn manufacturing properties without processing trouble. SOLUTION: This method for producing a thermoplastic synthetic fiber having improved mechanical characteristics comprises subjecting a thermoplastic resin to melt spinning, extruding a polymer having >=3,000 poise melt viscosity at 285 deg.C at 100 sec from a nozzle composed of a polymer feed part (A), a contracted flow channel part (B) and a hole part (C) right before a discharge face in which the contracted flow channel part (B) has a shape of hole diameter continuously decreasing in the discharge direction and the ratio L/D of the length (L) of the hole part (C) to the diameter (D) of the discharge hole is

公开(公告)号：JP2001214331A

公开(公告)日：2001-08-07

申请号：JP2000025448

申请日：2000-02-02

Applicant: TORAY INDUSTRIES

Inventor： MIYAZONO KOKI ,  FUNATSU YOSHIJI ,  FUKUHARA MOTOTADA

IPC: D01F6/86

Abstract: PROBLEM TO BE SOLVED: To obtain a partially oriented undrawn yarn of polyester having suppressed orientation in spinning and improved spinnability and drawing ratio. SOLUTION: This partially oriented undrawn yarn of polyester comprises a copolyester which is copolymerized with a polyalkylene glycol and satisfies (1) the number-average molecular weight of the polyalkylene glycol is 400-20,000, (2) the amount of the polyalkylene glycol added is 3.0-15.0 wt.% in a ratio to the formed polyester, (3) the intrinsic viscosity [η] of the polyester is 0.65-0.85 (dl/g) and (4) the weight-average molecular weight (Mw) of the polyester is >=40,000, the Z-average molecular weight (Mx) is >=75,000 and polydispersity (Mz/Mw) is 1.90 and has 0.015-0.060 double refractive index.

公开(公告)号：JPH10168656A

公开(公告)日：1998-06-23

申请号：JP33674196

申请日：1996-12-17

Applicant: TORAY INDUSTRIES

Inventor： OCHI TAKASHI ,  FUNATSU YOSHIJI ,  FUKUHARA MOTOTADA

IPC: D01F6/46 ,  D01D5/34 ,  D01F6/62 ,  D01F8/06 ,  D01F8/14 ,  D02G3/04

Abstract: PROBLEM TO BE SOLVED: To produce a polyester combined filament yarn, excellent in bulkiness, softness, body and stiffness and extremely reduced in dyeing unevenness. SOLUTION: This polyester combined filament yarn is a sheath-core conjugated filament yarn having a sheath polymer which is substantially polyethylene terephthalate and a core polymer that is polypropylene or polyethylene. The core polymer compounding ratio is 0-30wt.% and the filament yarn comprises two or more yarn groups at different core polymer compounding ratios of the core-sheath conjugated yarn.