Title:
METHOD OF MANUFACTURING SPINNERET AND SPINNERET
Document Type and Number:
Japanese Patent JP2021188142
Kind Code:
A
Abstract:
To provide a method of manufacturing a splittable rectangular spinneret using a general-purpose processing machine to be available at low cost, wherein the method prevents polymer leakage, is capable of arranging multiple nozzle holes and is highly productive.SOLUTION: A method of manufacturing a spinneret of this invention manufactures the spinneret in which one or more distribution plates 2 in which a flow passage 9 is formed and a discharge plate are consecutively arranged downstream in a spinning direction and extended in one direction viewed from a polymer discharge surface. The method includes the steps of: preparing a plurality of partial distribution plates 5 on which an auxiliary distribution plate 6 is placed, on at least one side of the distribution plate; performing processing of thinning at least one auxiliary distribution plate of the one or more partial distribution plates in the polymer spinning direction; equalizing the thickness of all the partial distribution plates in the polymer spinning direction; arranging the plurality of partial distribution plates in the direction in which the spinneret extends; and placing the discharge plate on the arranged plural partial distribution plates.SELECTED DRAWING: Figure 2
Inventors:
KANEMORI YASUNOBU
FUNAKOSHI SHOJI
FUNAKOSHI SHOJI
Application Number:
JP2020091122A
Publication Date:
December 13, 2021
Filing Date:
May 26, 2020
Export Citation:
Assignee:
TORAY INDUSTRIES
International Classes:
D01D4/00; D01D4/08
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