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Title:
SPIN BLOCK FOR CONJUGATED FIBER
Document Type and Number:
Japanese Patent JP2009174075
Kind Code:
A
Abstract:

To provide a spin block for conjugated fiber, which can solve various problems due to equalization of the melting temperature between a low melting point polymer and a high melting point polymer in a conventional spin block, especially the thermal deterioration of the low melting point polymer and the thermal deterioration of a conjugated fiber having small single filament fineness.

In the spin block, two thermoplastic polymers having mutually different melting points are joined in a spinneret pack to form a conjugated polymer flow, and then the conjugated polymer flow is spun from a spinneret to produce the conjugated fiber. In the spin block, (1) there are separated spin block portions for high temperature and for low temperature, (2) pipes for the high melting point polymer and the low melting point polymer, for transporting the high melting point polymer and the low melting point polymer, are connected to the spin block portion for high temperature and the spin block portion for low temperature, respectively, (3) the two spin block portions have gear pumps for high temperature and low temperature, for receiving the high melting point polymer and the low melting point polymer independently supplied from each pipes, and then measuring and continuously supplying the polymers to the spinneret pack, (4) the two spin block portions further have heating means for high temperature and low temperature, for individually and independently heating at respective prescribed temperatures, and (5) the low melting point polymer is supplied to the spin block portion for high temperature through the spin block portion for low temperature to join the high melting point polymer directly continuously supplied to the spin block for high temperature, and the conjugated polymer flow is formed in the spinneret pack to spin the conjugated fiber.


Inventors:
HAGIWARA KATSUYUKI
Application Number:
JP2008012523A
Publication Date:
August 06, 2009
Filing Date:
January 23, 2008
Export Citation:
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Assignee:
TEIJIN FIBERS LTD
International Classes:
D01D5/28; D01D1/06
Domestic Patent References:
JP2005009009A2005-01-13
JP2004232107A2004-08-19
JPH0219507A1990-01-23
JPH01272808A1989-10-31
JPS6278206A1987-04-10
Attorney, Agent or Firm:
Hideko Mihara