Title:
EXTRUSION MOLDING METHOD OF PHENOL RESIN MOLDING MATERIAL
Document Type and Number:
Japanese Patent JPS60115423
Kind Code:
A
Abstract:
PURPOSE: To obtain a molding of high quality stability by extruding a phenol resin molding material within a specified melt viscosity range.
CONSTITUTION: A fluid resistance is imparted with a tapered surface 3a against the extrusion force of a plunger 1 and the melt viscosity of a molding material is set at 5×103W5×107 poise to hold the fluid resistance within a proper range. This eliminates the tackiness of the composition (phenol resin blended with a base material, a filler, a hardening agent and other additives) to keep a balance between the extrusion force and the fluid resistance thereby accomplishing a continuous extrusion molding stably.
Inventors:
YONEHAMA MITSUO
ISHIHARA KOU
KANBARA NORIO
ISHIHARA KOU
KANBARA NORIO
Application Number:
JP22508783A
Publication Date:
June 21, 1985
Filing Date:
November 28, 1983
Export Citation:
Assignee:
TOKAI RUBBER IND LTD
International Classes:
B29C48/475; B29K61/04; (IPC1-7): B29C47/00; B29K61/04
Domestic Patent References:
| JPS4918949A | 1974-02-19 |