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Preparing method for gray ultraviolet resistant non-woven

An anti-ultraviolet, non-woven fabric technology, applied in non-woven fabrics, textiles and papermaking, feeding solution to spinnerets, etc., can solve the problems of poor anti-ultraviolet performance, poor anti-ultraviolet performance, etc., and achieve anti-ultraviolet effect. excellent effect

Inactive Publication Date: 2017-02-22
TIANDINGFENG NONWOVENS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Spunbond nonwovens have poor UV resistance when used as sunshade materials, and most of them are ordinary white nonwovens
For example, polypropylene spunbonded nonwovens do not need to be dried before spinning. The melting point of polypropylene is 170°C, and the spinning temperature is about 170-190°C. With the increase of surface density, the change trend of UVA and UVB transmittance Decrease exponentially, and as the sun exposure time increases, the anti-ultraviolet performance effect will gradually become worse

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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  • Preparing method for gray ultraviolet resistant non-woven
  • Preparing method for gray ultraviolet resistant non-woven

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] 1. Add polyester chips to the main silo, crystallize and dry at 170°C to remove the moisture in the chips, and then enter the screw for melting; then add black 0.5% of the amount of polyester chips added by the metering device to the small silo Masterbatch, mixed with 2% anti-aging masterbatch, dried at 90°C for 3-5 hours, added to a large screw, mixed and melted.

[0015] 2. After mixing, it is melted and extruded by a screw extruder. The temperature of the first zone of the screw extruder is 275°C, the temperature of the second zone is 280°C, the temperature of the third zone is 285°C, the temperature of the fourth zone is 290°C, and the temperature of the fifth zone is 288°C, the temperature in the sixth zone is 288°C; after the melt is filtered by a filter and metered by a metering pump, it enters the spinning box for spinning, and then is blown sideways. On the pendulum plate, divide the yarn on the pendulum plate and spread it evenly on the net curtain. The produc...

Embodiment 2

[0020] 1. Add polyester chips to the main silo, crystallize, dry at 170°C to remove the moisture in the chips, and then enter the screw for melting; then add black powder that accounts for 1% of the amount of polyester chips added by the metering device to the small silo. Masterbatch, mixed with 2% anti-aging masterbatch, dried at 90°C for 3-5 hours, added to a large screw, mixed and melted.

[0021] 2. After mixing, it is melted and extruded by a screw extruder. The temperature of the first zone of the screw extruder is 275°C, the temperature of the second zone is 280°C, the temperature of the third zone is 285°C, the temperature of the fourth zone is 290°C, and the temperature of the fifth zone is 288°C, the temperature in the sixth zone is 288°C; after the melt is filtered by a filter and metered by a metering pump, it enters the spinning box for spinning, and then is blown sideways. On the pendulum plate, divide the yarn on the pendulum plate and spread it evenly on the ne...

Embodiment 3

[0026] 1. Add polyester chips to the main silo, crystallize, dry at 170°C to remove the moisture in the chips, and then enter the screw to melt; then add black polyester chips that account for 1.5% of the amount of polyester chips added by the metering device to the small silo. Masterbatch, mixed with 2% anti-aging masterbatch, dried at 90°C for 3-5 hours, added to a large screw, mixed and melted.

[0027] 2. After mixing, it is melted and extruded by a screw extruder. The temperature of the first zone of the screw extruder is 275°C, the temperature of the second zone is 280°C, the temperature of the third zone is 285°C, the temperature of the fourth zone is 290°C, and the temperature of the fifth zone is 288°C, the temperature in the sixth zone is 288°C; after the melt is filtered by a filter and metered by a metering pump, it enters the spinning box for spinning, and then is blown sideways. On the pendulum plate, divide the yarn on the pendulum plate and spread it evenly on ...

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

Provided is a preparing method for gray ultraviolet resistant non-woven. The preparing method comprises the steps of adding a polyester chip into a main stock bin, conducting crystalization and drying at the temperature of 165-175 DEG C, and then conducting fusion in a screw; adding black master batch and ultraviolet resistant master batch into a small stock bin, wherein the adding proportion of the black master batch accounts for 0.5-2% of the dosage of the polyester chip and the adding proportion of the ultraviolet resistant non-woven accounts for 1.5-3% of the dosage of the polyester chip, conducting drying on the mixture for 3-5 hours at the temperature of 85-95 DEG C, adding a big screw into the mixture, and conducting melt mixing on the mixture; conducting screw extrusion after mixing the polyester chip, the black master batch and the ultraviolet resistant master batch, and conducting spinning, cooling, traction tube drafting and web forming to obtain a 80-150 g / m<2> product; conducting acupuncture reinforcing to reinforce and control the thickness of the product. The gray ultraviolet resistant non-woven product has an excellent ultraviolet resistant effect and is mainly used for being paved on the lawn to achieve an effect of partial heat retaining. According to experimental proof, after being exposed under an ultraviolet radiator for 500 hours, the gray ultraviolet resistant non-woven still has a mightiness retention rate of 79%.

Description

technical field [0001] The invention relates to a preparation method of a nonwoven fabric, in particular to a preparation method of a gray anti-ultraviolet ultrathin nonwoven fabric. Background technique [0002] Spunbonded nonwovens have poor UV resistance when used as sunshade materials, and most of them are ordinary white nonwovens. For example, polypropylene spunbonded nonwovens do not need to be dried before spinning. The melting point of polypropylene is 170°C, and the spinning temperature is about 170-190°C. With the increase of surface density, the change trend of UVA and UVB transmittance Exponential decline, and as the sun exposure time increases, the anti-ultraviolet performance effect will gradually become worse. Therefore, it is urgent to develop a non-white non-woven fabric with excellent anti-ultraviolet effect obtained by the spunbond method to meet the market demand. Contents of the invention [0003] The technical problem to be solved by the present inv...

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 Applications(China)
IPC IPC(8): D04H1/4382D04H1/48D01D1/09
CPCD04H1/4382D01D1/09D04H1/48D10B2331/04D10B2401/22
Inventor 刘冲镇垒姜瑞明聂松林刘威理
Owner TIANDINGFENG NONWOVENS CO LTD
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