Title:
【発明の名称】製紙機械フェルトのためのステープルとして有用なポリアミドファイバーを作るための方法
Document Type and Number:
Japanese Patent JP2853335
Kind Code:
B2
Abstract:
The invention provides a process for making polyamide fiber with high molecular weight and/or chemical and thermal resistance using conventional single or twin screw extruders. The process includes melt-blending polyamide polymer comprising at least about 75% by weight of poly(hexamethylene adipamide) or poly( epsilon -caproamide) and having a formic acid relative viscosity of about 20 to about 50 with a polyamide additive concentrate comprising polyamide polymer and an additive selected from the class consisting of stabilizers, catalysts and mixtures thereof to form a molten polymer which contains about 0.05 to about 2 weight % of the additive and extruding the molten polymer from a spinneret and forming a fiber having a denier per filament of 1 to 40. Fibers made by this process have great utility in the batt of papermaking machine felts where they provide improved resistance to wear and/or chemical attack.
Inventors:
KITSUDAA DEIBITSUDO ROI
Application Number:
JP51797994A
Publication Date:
February 03, 1999
Filing Date:
February 12, 1993
Export Citation:
Assignee:
II AI DEYUHON DE NIMOASU ANDO CO
International Classes:
D01F1/10; C08G12/10; D01F6/50; D01F6/60; D01F6/68; D01F6/80; D01F6/90; D21F7/08; (IPC1-7): D01F6/90; D01F6/60; D01F6/90
Domestic Patent References:
| JP1111012A | ||||
| JP5522568B2 | ||||
| JP323648B2 |
Attorney, Agent or Firm:
Heiyoshi Odashima (1 person outside)