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An anti-mosquito false twist yarn and producing method thereof

A false-twist and anti-mosquito technology, which is applied in the field of functional chemical fibers and its manufacture, can solve the problems affecting the anti-mosquito effect of the fiber, the continuity of the anti-mosquito function, the easy shedding of the anti-mosquito fiber, and the large loss, so as to achieve easy preservation and Long-term release, guaranteed anti-mosquito effect, and safe use

Inactive Publication Date: 2007-11-21
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the above-mentioned prior art, the mosquito-repellent fiber made by coating and impregnation is easy to fall off after washing, and the mosquito-repelling persistent effect is poor.
The method of blending the mosquito repellent with polypropylene and melt spinning to manufacture the mosquito repellent fiber requires the use of high temperature conditions above 240°C during melt spinning, and the mosquito repellent volatilizes quickly after the melt is sprayed from the spinneret. The loss is very large, and the content of mosquito repellent in the fiber is greatly reduced, which affects the mosquito repellent effect of the fiber and the continuity of the mosquito repellent function
The main disadvantages of the anti-mosquito fiber with water-absorbent resin with anti-mosquito components to fill the surface with communicating holes with the hollow part are: first, it is difficult to manufacture such fibers with holes on the surface, and the size and uniformity of the communicating holes The degree is difficult to keep consistent, and the manufacturing process is long; the second is that the gel filling amount of the water-absorbent resin with anti-mosquito components is low, which makes it difficult to achieve an effective mosquito repellent effect and also affects the retention of functions

Method used

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  • An anti-mosquito false twist yarn and producing method thereof
  • An anti-mosquito false twist yarn and producing method thereof
  • An anti-mosquito false twist yarn and producing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The formula of anti-mosquito false twisted silk is: the cortex material is dried polyethylene terephthalate; the core material is polyethylene 80 parts, DEET 10 parts, paraffin wax 6 parts, ethylene-vinyl acetate 4 parts . After the core layer material is fully mixed according to the formula, it is extruded by twin-screw at 150°C and granulated to produce a fiber core layer material; after the obtained core layer material and the skin layer material are fully dried, press The fiber sheath-core volume ratio of 7: 3, with skin-core composite spinning machine, C-shaped spinneret assembly, under 3300 meters per minute speed, spin out pre-oriented yarn (POY); Then pre-oriented yarn (POY) Process on the false twisting machine, the parameters are stretching 1.1 times, the temperature of the first hot plate is 180°C, the temperature of the second hot plate is 140°C, and the winding speed is 1000 m / min to make mosquito repellent false twisted yarn. The cross-section of the obta...

Embodiment 2

[0030] Take polypropylene with a melt index of 50 for the fiber cortex material; take 85 parts of polypropylene, 6 parts of permethrin, 2 parts of eugenol, 4 parts of ethylene-vinyl acetate (EVA), and 3 parts of polyethylene glycol (PEG) , after fully mixing, twin-screw extrusion at 180°C and granulation to produce fiber core material; after fully drying the skin and core material, according to the volume ratio of fiber skin and core 6:4, in the skin Core compound spinning machine, straight spinneret assembly, spun pre-oriented yarn (POY) at a speed of 2500 m / min; then pre-oriented yarn (POY) is processed on a false twister, and the parameter is stretched 1.7 times , the temperature of the first hot plate is 140°C, the temperature of the second hot plate is 120°C, and the winding speed is 500 m / min to make mosquito repellent false twisted yarn. The cross-section of the obtained anti-mosquito false twisted yarn is straight, and the communication part between the core layer and ...

Embodiment 3

[0032] Take the dried polypropylene terephthalate as the cortex material of the fiber; take 90 parts of polyester with a melting point of 180°C, 5 parts of polyethylene glycol, 2 parts of allethrin, and 3 parts of pentethrin, and mix them thoroughly , extruded by twin-screw at 200°C, granulated to produce fiber core layer material; according to the volume ratio of fiber skin and core 4:6, in the skin-core composite spinning machine, triangular spinneret assembly, 3100 m / min Under the high speed, the pre-oriented yarn (POY) is spun; then the pre-oriented yarn (POY) is carried out on the false twister, stretched 2 times, the temperature of the first hot plate is 160 ° C, the temperature of the second hot plate is 130 ° C, The winding speed is 800 m / min, and the described anti-mosquito false twisted yarn is made. The cross-section of the obtained anti-mosquito false twisted yarn is triangular, and the communication part between the core layer and the cortex accounts for 20% of th...

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Abstract

The present invention relates to a mosquito-repelling false twist yarn and its production method. It has sheath-core structure, the sheath-core volume ratio is 2:8-7:3; its fibre formula is as follows: sheath material is linear polymer, including PTT, PBT, PA-6, PET or one kind of PP whose melting index is 25-50; the described core material formula composition includes (by wt%) 93-98% of core polymer and 2-7% of mosquito-repellent; the core polymer is PE, PP or one kind of PET whose melting point is 150-200 deg.C; the described mosquito-repellent is at least one kind of Metadelphene, permethrin, allethrin, valerathrin, methothrin, allylguaiacol or plifenate. Said invention also provides the concrete steps of its production method.

Description

technical field [0001] The present invention relates to functional chemical fiber and its manufacturing method, in particular to a mosquito-repelling false-twisted silk with the function of repelling mosquitoes and its manufacturing method. The IPC main classification number is proposed to be Int.Cl 7 D01F1 / 10. Background technique [0002] Anti-mosquito fiber is a kind of practical functional fiber. Anti-mosquito fiber products and manufacturing methods thereof are actively being studied at home and abroad. For example, Chinese patent CN 1468983A has introduced a kind of manufacturing method of the polypropylene fiber that has the function of repelling mosquitoes. The method comprises the following steps: uniformly mixing polypropylene resin and mosquito repellant, granulating, and melt spinning to produce polypropylene fiber with mosquito repellent function. The mosquito repellant content in the fiber is 1.0-3.0%. Chinese patent CN 1468984A reports a method for manufac...

Claims

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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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F1/10D01D5/34
Inventor 齐鲁叶建忠邹建柱
Owner TIANJIN POLYTECHNIC UNIV
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