公开(公告)号：US20200216980A1

公开(公告)日：2020-07-09

申请号：US16640771

申请日：2018-09-03

Applicant: KOLON INDUSTRIES, INC.

Inventor： Ki Sub LIM ,  II CHUNG ,  Sung Ho PARK

IPC: D01D5/084 ,  D01D5/098 ,  D01F6/62

Abstract: Disclosed are a PET fiber having an intrinsic viscosity of 1.1 dl/g or higher and a tensile strength of 10 g/d or higher, and a manufacturing method therefor. The manufacturing method includes the steps of: melting a polyethylene terephthalate chip having an intrinsic viscosity of 1.4 to 1.7 dl/g to prepare a spinning melt; discharging the spinning melt through a nozzle of a spinning pack; heating the spinning melt just before being discharged from the nozzle by means of a heat source of 300 to 500° C. located immediately below the nozzle; converging a plurality of filaments formed by the discharging to form a multifilament; and drawing the multifilament, wherein a temperature of the spinning pack is maintained at 280 to 305° C.

公开(公告)号：US20220349094A1

公开(公告)日：2022-11-03

申请号：US17624385

申请日：2020-07-03

Applicant: KOLON INDUSTRIES, INC. ,  CONTINENTAL REIFEN DEUTSCHLAND GMBH

Inventor： Ki Sub LIM ,  Il CHUNG ,  Sung Ho PARK ,  Nermeen NABIH ,  Michael SCHUNACK ,  Thomas KRAMER

IPC: D02G3/48 ,  D01F8/14 ,  D01D5/08

Abstract: This invention relates to high tenacity yarn for a tire cord comprising polyethyleneterephthalate multifilament obtained by melting and spinning a resin composition comprising first polyethyleneterephthalate and second polyethyleneterephthalate having different intrinsic viscosities, and a method for preparing the same.