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Anti-mosquito tensile silk and producing method thereof

A technology for drawing silk and mosquito repellent, applied in the manufacture of rayon, textile and paper making, filament/thread forming, etc. Function retention and other issues, to achieve the effect of easy storage and long-term release, ensuring mosquito repellent effect, and reducing direct contact

Inactive Publication Date: 2007-10-24
HAIAN COUNTY BROS SYNTHETIC FIBER
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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 mosquito repellent with low content 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

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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  • Anti-mosquito tensile silk and producing method thereof
  • Anti-mosquito tensile silk and producing method thereof
  • Anti-mosquito tensile silk and producing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The formula of mosquito repellent stretched 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) It is processed on a stretching machine, and then stretched at a stretching temperature of 150° C. and a stretching speed of 1000 m / min, through 1.5 times stretching to obtain a stretched yarn with mosquito repellent function. The cross-section of the obtained stretched mosquito repellent ...

Embodiment 2

[0035] 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 composite spinning machine, one-shaped spinning assembly, at a speed of 2500 m / min, spin out pre-oriented yarn (POY); then pre-oriented yarn (POY) is processed on the drawing machine, and then the drawing temperature At 130°C and at a drawing speed of 300 m / min, the stretched yarn with mosquito repellent function was obtained after stretching by 2.5 times. The cross-section of the obtained stretched mosquito repellent yarn is straight, and the communication part between the core layer and the cortex accounts for 10% of the ci...

Embodiment 3

[0037] 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 , at 200 ℃ through twin-screw extrusion, granulation, to produce fiber core layer material; according to the volume ratio of fiber sheath and core 4:6, in sheath-core composite spinning machine, triangular spinneret assembly, at 3100 m / At a speed of 1 minute, pre-oriented yarns (POY) are spun; then the pre-oriented yarns (POY) are processed on a stretching machine, and then at a stretching temperature of 140 ° C and a stretching speed of 600 m / min, after 2 times Stretching to prepare stretched silk with mosquito repellent function. The cross-section of the obtained mosquito repellent stretched yarn is triangular, and the communication part between the core layer and the cortex accounts for 20% of the perimeter of the filament fibe...

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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Abstract

The present invention relates to a mosquito-repelling drawn yarn and its production method. Said drawn yarn has sheath-core structure, the volume ratio of sheath-core 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 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, and the 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 stretched 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. Mosquito repellent fibers are generally sold in the form of filament products to facilitate further processing. Anti-mosquito fiber and its manufacturing method are actively researched at home and abroad. For example, Chinese patent CN 1468983A introduces a polypropylene fiber with mosquito repellent function. The fiber is a polypropylene fiber with mosquito repellent function made by uniformly mixing polypropylene resin and mosquito repellent, granulating, and then melt spinning. The mosquito repellant content in the fiber is 1.0-3.0%. Chinese patent CN1468984A reports a metho...

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 齐鲁叶建忠贺鹏邹建柱
Owner HAIAN COUNTY BROS SYNTHETIC FIBER
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