A device for preparing auxetic composite yarn through active wrapping of fine and hard low-elasticity yarn around thick and soft high-elasticity yarn

A technology of composite yarn and elastic yarn, which is applied in the direction of yarn, textiles and papermaking, etc. It can solve the problems of strong limitations of spinning methods, uneven yarn structure, unsuitability for continuous production, etc., and achieves easier control of yarn tension, yarn The effect of stable line tension, constant speed and stable supply and feeding

Inactive Publication Date: 2017-07-28
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, the existing spinning devices and methods for auxetic composite yarns are still immature, and there are problems such as uneven yarn structure, strong spinning method limitations, and unsuitability for continuous production.

Method used

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  • A device for preparing auxetic composite yarn through active wrapping of fine and hard low-elasticity yarn around thick and soft high-elasticity yarn
  • A device for preparing auxetic composite yarn through active wrapping of fine and hard low-elasticity yarn around thick and soft high-elasticity yarn
  • A device for preparing auxetic composite yarn through active wrapping of fine and hard low-elasticity yarn around thick and soft high-elasticity yarn

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] Embodiment 1 spandex / nylon auxetic composite yarn preparation

[0059] Spinning device and method for preparing auxetic composite yarn by actively winding thick, soft and high-elastic yarn with thin, hard and low-elastic yarn to implement spandex / nylon auxetic composite yarn, using spandex monofilament and nylon multifilament respectively As thick and soft high-elastic yarns and thin and hard low-elastic yarns, the spandex monofilament 11 unwound from the thick and soft high-elastic yarn bobbin 12 passes through the tension disc 14 and is pulled through the hollow tube 28 with a certain tension; The yarn 16 passes through the yarn guide hole 191 to the yarn guide groove 23 of the speed-controllable rotor 24; the nylon multifilament 16 follows the spiral yarn guide groove 23 on the surface of the speed-controllable rotor 24, and passes through the speed-controllable rotor 24. The rotation of the rotor cup 24 is output to the head end of the hollow tube, where it converge...

Embodiment 2

[0060] Example 2 Preparation of Spandex / UHMWPE Auxetic Composite Yarn

[0061] Spinning device and method for preparing auxetic composite yarn by actively winding thick, soft and high-elastic yarn with thin, hard and low-elastic yarn according to the present invention to prepare spandex / UHMWPE auxetic composite yarn, using spandex monofilament respectively and ultra-high molecular weight polyethylene multifilament as thick and soft high-elastic yarns and fine and hard low-elastic yarns. The rest of the operating steps are the same as in Example 1, and the specific process parameters are as shown in Table 1.

Embodiment 3

[0062] Example 3 Preparation of spandex / polyester high-strength yarn auxetic composite yarn

[0063] Spinning device and method for preparing auxetic composite yarn by actively winding thick, soft and high-elastic yarn with thin, hard and low-elastic yarn to implement spandex / polyester high-strength yarn auxetic composite yarn, using spandex monofilament and polyester respectively The high-strength yarn is used as thick and soft high-elastic yarns and fine and hard low-elastic yarns. The rest of the operating steps are the same as in Example 1, and the specific process parameters are shown in Table 1.

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Abstract

The invention relates to a device for preparing auxetic composite yarn through active wrapping of fine and hard low-elasticity yarn around thick and soft high-elasticity yarn and a method and use thereof. The device comprises yarn component supply and feeding control mechanisms, an active wrapping forming mechanism and a winding mechanism. The method is characterized in that thick and soft high-elasticity yarn unwound from bobbins passes through a tension disk and passes through a hollow pipe through pulling of certain tension; fine and hard low-elasticity yarn passes through a telescopic location yarn guide and is output to a head end of the hollow pipe along a spiral yarn guide groove of a speed-controllable rotor via rotation of the rotor, and then meets the thick and soft high-elasticity yarn and is wound around the thick and soft high-elasticity yarn actively to form auxetic composite yarn with a spiral wrapping structure. The device is easy to operate, low in cost, and suitable for continuous production, promotion and application, and can be installed on spinning machines for ring spinning, friction spinning, rotor spinning and electrostatic spinning. Auxetic composite yarn manufactured with the device is uniform in structure and unique in performance and can be used for buffering ropes, bulletproof and stab-resistant yarn, yarn for heat preservation fabric and sewing threads for medical surgery.

Description

technical field [0001] The invention relates to a device, method and application for preparing auxetic composite yarns by actively winding thin, hard and low-elastic yarns around thick, soft and high-elastic yarns. Background technique [0002] Auxetic material refers to a material with a negative Poisson’s ratio, that is, when it is stretched (or compressed) in a certain direction relative to traditional materials, it will shrink (or expand) perpendicular to the direction of the force. When stretched (or compressed) in a certain direction, it will expand (or shrink) perpendicular to the direction of the force. Auxetic yarn is also called negative poise ratio yarn. Under certain axial tension, the radial profile of the yarn increases. Studies have found that in addition to negative Poisson's ratio, auxetic materials also have other unique properties compared with traditional materials, such as shear stiffness, fracture toughness, indentation resistance, energy absorption ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D02G3/04D02G3/36D01H13/04
CPCD01H13/04D02G3/04D02G3/36
Inventor 杜赵群刘赛何玲娥
Owner DONGHUA UNIV
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