Felament machine sewing yarn

A technology of filament machine and filament yarn, which is applied in the direction of yarn, single-component synthetic polymer rayon, textiles and papermaking, etc. It can solve problems such as deterioration of uniformity, separation of two filament yarns, and reduction in strength, and achieves Effect of improving sewability

Inactive Publication Date: 2007-05-16
TEIJIN FRONTIER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the case of machine sewing threads, there are problems that separation of the two filament yarns occurs; deviations occur in the formation of stitches, which deteriorates uniformity; or, when machine sewing threads are dyed, dyeability Significant difference
Compared with conventional filament machine sewing threads, this machine sewing thread has problems such as reduced strength, thread slipping from the bobbin, inability to feed the thread smoothly, frequent end breaks, and poor handleability because Only the difference in birefringence is used

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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～4 and comparative example 1～3

[0041] Raw Yarn Preparation

[0042] PET containing 0.02% by weight of titanium dioxide was prepared as the polymer for polyester filament A; PET was prepared without a matting agent such as titanium dioxide as the polymer for polyester filament B. Both polymers were dried separately at 160°C for 4 hrs.

[0043] Then, both polymers were melted at 300°C. Then, by using a bisected spinneret, the polymer used for polyester filament A is discharged from 15 holes, and the polymer used for polyester filament B is discharged from 5 holes. Cool with air at room temperature and solidify in the side air quenching tunnel below. An oil agent was applied to the two kinds of yarns in a blended state, and then the resulting yarn was taken up at 1200 m / min, thereby providing a 180 dtex / 20 filament undrawn yarn. The undrawn yarn consisted of 144 decitex polyester filament A and 36 decitex polyester filament B.

[0044] The undrawn yarn was fed into a drawing machine and drawn under the fol...

Embodiment 5～7 and comparative example 4 and 5

[0060] Raw Yarn Preparation

[0061] PET was prepared as the polymer for polyester filament A without a matting agent such as titanium dioxide, and PET was prepared as a polymer for polyester filament B without a matting agent such as titanium dioxide. Both polymers were dried at 160° C. for 4 hrs, respectively.

[0062] Then, the polymer used for polyester filament B is mixed with polymethyl methacrylate (Delpet80N, manufactured by Asahi Kasei Industrial Co., Ltd.), and carried out in a sliced ​​state. The amount of the latter is 0.5 to 8.0%. As an orientation inhibitor, use A screw melt extruder melts the two polymers at 300°C. The bisected spinneret is applied, and the polymer used for polyester filament A is extruded from 15 holes, and the polymer used for polyester filament B is discharged from 5 holes. Air cooling and solidification at room temperature in a side-blown quenching tunnel. The oil agent was applied to the two kinds of filaments in a blended state, and the...

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Abstract

A filament machine sewing thread comprising a spun combined filament yarn obtained by combining polyester filaments A having an intrinsic viscosity [eta]F within the range of 0.7 to 1.2 with polyester filaments B having a lower intrinsic viscosity [eta]F than that of the polyester filaments A by 0.2 to 0.7 and a higher elongation than that of the polyester filaments A in a spinning stage.

Description

technical field [0001] The present invention relates to a filament machine sewing thread capable of forming uniform stitches while maintaining the luster of the filament and having good high-speed sewability. Background technique [0002] Filament machine sewing thread has been used for various sewing because of luster, uniform stitching, and high machine thread strength compared with machine thread containing spun yarn; however, filament machine The use of sewing thread also has disadvantages in that the sewability is inferior to that of sewing thread for spun yarn machines in that continuous stitches and zigzag stitches tend to cause untwisting. [0003] As for the reason for this, it is considered that when a polymer having a higher intrinsic viscosity than conventional polymers is applied with a high-temperature heat history, stretching is performed in order to maintain the machine-used sewing thread characteristic as a filament machine. The strength of the sewing threa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D02G3/46D02G3/00D02G3/04D01F6/00
CPCY10T428/2969Y10T428/2913D02G3/46
Inventor 笠冈胜行桧垣昌裕大洞谦二中山元二
Owner TEIJIN FRONTIER CO LTD
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