Full-multifilament double-strand sewing thread with tensile expansion property and manufacturing method thereof

A technology of stretching expansion and manufacturing method, which is applied in the field of sewing thread, can solve the problems that have not been actually produced and cannot be mass-produced, and achieve the effect of easy production and application, and stable twist

Inactive Publication Date: 2018-08-28
HUBEI FENGSHU THREAD MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the defects and problems existing in the prior art that have not been actually produced and cannot be mass-produced, and provide a fully stretchable stretch-swelling film that can be actually produced and can be mass-produced. Multifilament double-ply sewing thread and its manufacturing method

Method used

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  • Full-multifilament double-strand sewing thread with tensile expansion property and manufacturing method thereof
  • Full-multifilament double-strand sewing thread with tensile expansion property and manufacturing method thereof
  • Full-multifilament double-strand sewing thread with tensile expansion property and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Production of filament bundles: First, the selected FDY filaments are bundled and paralleled to obtain untwisted multifilament bundles, and then the untwisted multifilament bundles are passed through the twisting process to increase the twist of 5T / 10cm, so as to obtain high rigidity twist Tow, and then high rigidity twisted tow through the winding process to obtain filament bundle; the breaking strength of the FDY filament is 5.2 cN / dtex.

[0048] Production of air-textured tow: Firstly, the selected POY filaments are bundled and combined to obtain untwisted multifilament bundles, and then the untwisted multifilament bundles are stretched, deformed, thermally stabilized, shaped, and wound in sequence process, to obtain the initial air-textured tow, and then the initial air-textured tow is passed through the winding process to obtain the air-textured tow; the elongation at break of the POY filament is 30%, and the POY filament undergoes deformation processing The overfe...

Embodiment 2

[0051] Production of filament bundles: First, the selected FDY filaments are bundled and doubled to obtain untwisted multifilament bundles, and then the untwisted multifilament bundles are passed through the twisting process to increase the twist of 30T / 10cm, so as to obtain high rigidity twist Tow, and then high rigidity twisted tow through the winding process to obtain filament bundle; the breaking strength of the FDY filament is 12.0 cN / dtex.

[0052] Production of air-textured tow: Firstly, the selected POY filaments are bundled and combined to obtain untwisted multifilament bundles, and then the untwisted multifilament bundles are stretched, deformed, thermally stabilized, shaped, and wound in sequence process, to obtain the initial air-textured tow, and then the initial air-textured tow is passed through the winding process to obtain the air-textured tow; the elongation at break of the POY filament is 60%, and the POY filament undergoes deformation processing The overfee...

Embodiment 3

[0055] Basic content is the same as embodiment 1, the difference is:

[0056] In the production of filament bundles: the untwisted multifilament bundles are passed through the twisting process to increase the twist of 20T / 10cm; the breaking strength of the FDY filaments is 8 cN / dtex.

[0057] In making air-textured tow: the elongation at break of the POY filament is 45%.

[0058] In the production of full-multifilament double-ply sewing thread: the diameter of the filament bundle is 75% of the diameter of the air-textured tow, and the Poisson's ratio of the full-multifilament double-ply sewing thread is -0.24.

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Abstract

Provided is a full-multifilament double-strand sewing thread with a tensile expansion property. The thread includes filament bundles twisted together and air-textured yarn bundles, the filament bundles are made of FDY filaments, the air-textured yarn bundles are made of POY filaments, the filament bundles and the air-textured yarn bundles are all of wavy structures, the diameters of the filament bundles are 75%-125% of that of the air-textured yarn bundles, the strength of the filament bundles is greater than that of the air-textured yarn bundles, the flexibility of the filament bundles is less than the air-textured yarn bundles, and Poisson's ratio of the full-multifilament double-strand sewing thread is less than 0 and greater than or equal to 0.5. The thread has the tensile expansion property, can be actually produced, and can be mass-produced, and a stitched product does not easily slip, has no hairiness, is advantageous for puncture and suture, has high strength, and is suitable for high-speed sewing.

Description

technical field [0001] The invention relates to a sewing thread, which belongs to the field of textiles, and in particular to a fully multifilament double-ply sewing thread with stretching and swelling properties and a manufacturing method thereof, which is particularly suitable for actually manufacturing the sewing thread with stretching and swelling properties, And can realize large-scale production. Background technique [0002] Poisson's ratio material refers to the ratio of the elongation strain generated when the material is subjected to a tensile load in a certain direction to the shrinkage strain perpendicular to the stretching direction. In general, when almost all materials are stretched, the measured Poisson's ratio is a positive value, while the negative Poisson's ratio (Negative Poisson's Ratio) phenomenon is completely opposite, when the material is subjected to a tensile load in a certain direction When it acts, it will expand to a certain extent in the direc...

Claims

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Application Information

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IPC IPC(8): D02G3/02D02G3/46
CPCD02G3/02D02G3/46D10B2331/02D10B2331/04
Inventor 陈晓林李建强武继松张如全
Owner HUBEI FENGSHU THREAD MFG
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