Title:
CLEANING OF SPINNERET
Document Type and Number:
Japanese Patent JPS5450615
Kind Code:
A
Abstract:
PURPOSE: To clean a large number of spinnerets used for melt spinning at a time without damaging the spinneret material at a relatively low temperature, by cleaning the spinnerets with a specific glycol as a solvent.
CONSTITUTION: Spinnerets used for melt spinning are cleaned with a glycol expressed by formula HO(C2H4O)nH (n≥4) as a solvent at 290W350°C. Tetraethylene, octaethylene, hexaethylene glycols, etc. may be preferably used as the solvent. The cleaning temperature is preferably near 290°C from the viewpoint of the protection of the spinneret material. The deterioration of organopolysiloxane used for adjusting the spinneret surface is accelerated above 290°C
Inventors:
KAWAMURA JIROU
MINETA YOSHIHIKO
ITASAKA TOSHIAKI
MINETA YOSHIHIKO
ITASAKA TOSHIAKI
Application Number:
JP11495077A
Publication Date:
April 20, 1979
Filing Date:
September 24, 1977
Export Citation:
Assignee:
NIPPON ESTER CO LTD
International Classes:
D01D4/04; C11D7/50; (IPC1-7): D01D3/00