Title:
PRODUCTION OF DRAWN YARN OF ULTRA-HIGH-MOLECULAR-WEIGHT POLYETHYLENE AND PRODUCTION UNIT FOR UNDRAWN YARN THEREOF
Document Type and Number:
Japanese Patent JPS62104911
Kind Code:
A
Abstract:
PURPOSE: To make it possible to continuously produce undrawn yarn of ultra- high-molecular-weight polyethylene having ≥1mm outer diameter, by using a molding machine having a die with large L/D attached to the tip of an extruder equipped with a slotted cylinder and a low compression screw.
CONSTITUTION: An ultra-high-molecular-weight polyethylene having ≥5dl/g intrinsic viscosity [η] is fed to a molding machine having a tube die 7 which has a mandrel 5 rotates with revolution of screw and ≥5 (preferably 30W70) L/D attached to the tip of an extruder equipped with a slotted cylinder 2 and a screw 3 having 1W2.5 compression ratio, melted by the screw, extruded from the tube die, cooled, divided in the direction of flow of the tube and drawn.
Inventors:
SHIRAKI TAKESHI
NAKAJIMA KOJI
NAKAJIMA KOJI
Application Number:
JP23955785A
Publication Date:
May 15, 1987
Filing Date:
October 28, 1985
Export Citation:
Assignee:
MITSUI PETROCHEMICAL IND
International Classes:
D01F6/04; D01D5/12; D02J1/22; (IPC1-7): D01D5/12; D01F6/04; D02J1/22
Attorney, Agent or Firm:
Yukio Shoko (1 person outside)
Previous Patent: JPS62104910
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