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Title:
均色性に優れたポリプロピレン着色繊維の製造方法
Document Type and Number:
Japanese Patent JP4071028
Kind Code:
B2
Abstract:

To provide colored polypropylene fiber that has excellent color uniformity enough to inhibit streaky defects caused by color difference, when woven or knitted fabrics are formed, provide a method of producing the same and provide woven and knitted fabrics having no uneven coloring using the colored fiber.

A spun-dyed polypropylene multifilament crimped yarn having a dispersion of brightness ΔL* of ≤0.8 measured with a colorimeter and a fiber fineness of 56-560 dtex is produced by confluenting the molten polypropylene fed from the main extrusion machine with another molten polypropylene including pigment extruded from another extrusion machine, allowing the resultant composite polymer flow to pass through a dynamic kneading element and extruded through spinning orifices into the polypropylene colored filament yarns.

COPYRIGHT: (C)2004,JPO


Inventors:
Hideo Sakakura
Fukui Juetsu
Application Number:
JP2002104497A
Publication Date:
April 02, 2008
Filing Date:
April 05, 2002
Export Citation:
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Assignee:
Mitsubishi Rayon Co., Ltd.
International Classes:
D01D5/28; D01F6/46; D02G1/02; D03D15/00
Domestic Patent References:
JP2002506146A
JP8157713A
JP9268463A
JP63159515A
JP2003293214A
Attorney, Agent or Firm:
Toshio Yoshizawa
Nobuo Kawakami