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Compoles fiber excellent in post-processablility and method of producing same

A technology for composite fibers and manufacturing methods, applied in the direction of fiber types, manufacturing tools, fiber processing, etc.

Inactive Publication Date: 2004-04-14
TEIJIN FRONTIER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0040] The object of the present invention is to provide a PTT-based composite fiber with excellent post-processing properties such as weaving preparation process and dyeing process, which does not have the problem of yarn breakage caused by interfiber entanglement in the warping process, and does not have the problem of yarn breakage caused by polymerization in the weaving process. There are no problems such as yarn breakage caused by white powder caused by polymers and oligomers, and there is no problem of dyeing stains and unevenness caused by oligomer precipitation

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Compoles fiber excellent in post-processablility and method of producing same
  • Compoles fiber excellent in post-processablility and method of producing same
  • Compoles fiber excellent in post-processablility and method of producing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～4

[0294] [Examples 1 to 4, Comparative Example 1]

[0295] In this example, a side-by-side composite fiber composed of PTT for both components will be described, and the influence of the content rate of the cyclic dimer of trimethylene terephthalate will be described.

[0296] (spinning conditions)

[0297] Drying temperature and moisture content of polymer blocks: 110°C, 15ppm

[0298] Extruder temperature:

[0299] Rod A 250°C (high intrinsic viscosity side)

[0300] B rod 250°C (low intrinsic viscosity side)

[0301] Temperature of rotating part: 265°C

[0302] Melting residence time: 12 minutes

[0303] Spinning aperture: 0.50mmΦ

[0304] Spinning hole length: 1.25mm

[0305] The inclination angle of the spinneret hole relative to the vertical direction: 35 degrees

[0306] Number of spinneret holes: 12 holes

[0307] The length of the non-vent area: 255mm

[0308] Cooling air temperature and relative humidity: 22°C 90%

[0309] Cooling wind speed: 0.5m / s

[0310...

Embodiment 5～8、 comparative example 2 and 3

[0338] This example illustrates the effect of melting conditions.

[0339] In Example 1, the melting time was different as shown in Table 2, and other fabrics were obtained in the same manner as in Example 1. Table 2 shows the evaluation results of the obtained PTT-based composite fibers and their post-processing properties.

[0340] It can be seen from Table 2 that if the melting conditions specified in the present invention (Examples 5-8) are used, the content rate of the cyclic dimer of propylene terephthalate can be controlled, and PTT-based composite fibers with excellent post-processing properties can be obtained. .

Embodiment 9～12、 comparative example 4

[0343] In this example, the effect of the inclination angle of the spinneret holes in the vertical direction will be described.

[0344] Spinning was carried out in the same manner as in Example 1 except that the inclination angle of the spinneret holes in the vertical direction was different as shown in Table 3. The results are shown in Table 3.

[0345] As can be seen from Table 3, the spinneret holes (Examples 9 to 12) having the inclination angles specified in the present invention exhibit good spinning performance and good fineness change value U%. In Comparative Example 4 corresponding thereto, the fineness change value U% was large, and the dyeing quality was poor.

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Abstract

The present invention provides a polytrimethylene terephthalate composite fiber characterized in that the composite fiber is a plurality of single filament which comprises two kinds of polyester components laminated to each other in a side-by-side manner or an eccentric sheath-core manner, at least one polyester component is polytrimethylene terephthalate and the composite fiber satisfies the following conditions: the content of trimethylene terephthalate cyclic dimer in polytrimethylene terephthalate is 2.5 wt% or less, the fiber-fiber dynamic friction coefficient is from 0.2 to 0.4, the degree of intermingling is from 2 to 60 point / m and / or the number of twists is from 2 to 60 T / m and the fiber size fluctuation U% is 1.5% or less.

Description

technical field [0001] The present invention relates to a poly(trimethylene terephthalate) composite fiber and a method for producing the same. Background technique [0002] Polytrimethylene terephthalate (hereinafter referred to as PTT) has passed J.PolymerScience: Polymer Physics Edition Vol.14 p263-274 (1976) and Chemical Fibers Intnrnational Vol.45, p110-111 April (1995) and other previous documents have been known. [0003] These previous documents have recorded the basic characteristics of PTT fibers such as stress-elongation, and introduced that PTT fibers are suitable for clothing, carpets, etc. due to their small initial modulus and excellent elastic recovery properties. [0004] Special publication No. 43-19108, JP 11-189923, JP 2000-239927, JP 2000-256918, EP1059372A, etc. publicly report that at least one component or both components are composed of Side-by-side composite fibers made of PTT. [0005] These previous documents have publicly reported that at leas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27B17/00D01D5/30D01F8/14D06M13/02D06M13/224D06M15/53
CPCD06M2200/40D06M7/00D06M15/53D06M13/224D06M13/02D01F8/14Y10T428/2924Y10T428/2931Y10T428/2913Y10T428/2964Y10T428/2929Y10T428/2969
Inventor 小柳正阿部孝雄松尾辉彦三森洋生
Owner TEIJIN FRONTIER CO LTD
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