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A device and method for air-jet spinning using melt-blown ultrafine fibers

A superfine fiber, air-jet spinning technology, applied in the field of fiber manufacturing, can solve the problems of antibacterial, heat insulation, sound absorption, limited filtration and adsorption, limited yarn specific surface area, thick details, and many yarn defects, and achieves melt-blown The effect of high fiber content, low fineness and quality, and low hairiness

Active Publication Date: 2019-05-10
WUHAN TEXTILE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The melt-blown fiber is simply attached to the spinning surface, and the cohesion with the spinning yarn is small, and it is easy to fall off; and although there are melt-blown fibers on the surface of the yarn, since only the outer layer is melt-blown fiber, the final yarn The improvement of specific surface area is limited, and the effects of antibacterial, heat insulation, sound absorption, filter adsorption and other functions are also limited; moreover, meltblown fibers are short fibers, which are simply coated on the surface of filaments or yarns to add The yarn formed by twisting is uneven in dryness, with thick details and many yarn defects

Method used

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  • A device and method for air-jet spinning using melt-blown ultrafine fibers
  • A device and method for air-jet spinning using melt-blown ultrafine fibers
  • A device and method for air-jet spinning using melt-blown ultrafine fibers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0077] A method of air-jet spinning utilizing melt-blown superfine fibers, comprising the following steps:

[0078] (1) Preparation of melt-blown ultrafine fibers: After PP pellets enter the hopper of the melt-blown device, they are melted by the screw extruder, and the metering pump is quantitatively sprayed out from the spinneret of the melt-blown die. The temperatures were 260°C, 260°C, 270°C, and 270°C, respectively. The extruded melt-blown ultrafine fibers are first rapidly drawn and drawn under the hot air on both sides. The temperature of the hot air is 220°C, the pressure of the hot air is 0.5MPa, and the speed of the melt-blown is 10m / min. After the fiber is drawn by hot air, it is cooled in the cold air box. The temperature of the cooling air is 8°C, and the flow rate of the cooling air is 15000m 3 / h, the cooling wind pressure is 1500Pa, the wind speed is 2m / s, and the average diameter of the obtained melt-blown ultrafine fibers is 1 μm.

[0079] (2) Cooling and c...

Embodiment 2

[0083] A method of air-jet spinning utilizing melt-blown superfine fibers, comprising the following steps:

[0084] (1) Preparation of meltblown ultrafine fibers: After the PP pellets enter the hopper, they are melted by the screw extruder, and the metering pump is quantitatively sprayed out from the spinneret of the meltblown die head. The temperatures in the four zones of the screw extruder are respectively 260 ℃, 260℃, 270℃, 270℃. The extruded melt-blown ultrafine fibers are first rapidly drawn and drawn under the hot air on both sides. The temperature of the hot air is 220°C, the pressure of the hot air is 0.5MPa, and the speed of the melt-blown is 10m / min. After the fiber is drawn by hot air, it is cooled in the cold air box. The temperature of the cooling air is 8°C, and the flow rate of the cooling air is 15000m 3 / h, the cooling wind pressure is 1500Pa, the wind speed is 2m / s, and the average diameter of the obtained melt-blown ultrafine fibers is 1 μm.

[0085] (2) ...

Embodiment 3

[0089] A method of air-jet spinning utilizing melt-blown superfine fibers, comprising the following steps:

[0090] (1) Preparation of meltblown ultrafine fibers: After the PP pellets enter the hopper, they are melted by the screw extruder, and the metering pump is quantitatively sprayed out from the spinneret of the meltblown die head. The temperatures in the four zones of the screw extruder are respectively 260 ℃, 260℃, 270℃, 270℃. The extruded melt-blown ultrafine fibers are first rapidly drawn and drawn under the hot air on both sides. The temperature of the hot air is 220°C, the pressure of the hot air is 0.5MPa, and the speed of the melt-blown is 10m / min. After the fiber is drawn by hot air, it is cooled in the cold air box. The temperature of the cooling air is 8°C, and the flow rate of the cooling air is 15000m 3 / h, the cooling wind pressure is 1500Pa, the wind speed is 2m / s, and the average diameter of the obtained melt-blown ultrafine fibers is 1 μm.

[0091] (2) ...

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Abstract

The invention relates to a device and method for performing jet spinning by means of melt-blown ultrafine fiber. The device comprises a melt-blowing device, a cooling bundling device, a jet spinning device and a collection device. The melt-blowing device is used for preparing melt-blown ultrafine fiber and conveying the melt-blown ultrafine fiber to the cooling bundling device; the cooling bundling device is arranged below the melt-blowing device and used for performing cooling and bundling on the melt-blown ultrafine fiber blown by the melt-blowing device; the jet spinning device is used for manufacturing the bundled melt-blown ultrafine fiber into ultrafine fiber yarn by means of the jet spinning method; the collection device is used for collecting the ultrafine fiber yarn. The melt-blown ultrafine fiber is directly spun into yarn or covering yarn, so that the melt-blown fiber is high in content and has the high specific surface area and low fineness and quality and has the good heat insulation, sound absorption, filtering, adsorption and other functions. In addition, due to the fact that the fiber has the good cohesion friction, and the spun yarn has little yarn hairiness and good evenness.

Description

technical field [0001] The invention relates to the field of fiber manufacturing, in particular to a device and method for air-jet spinning using melt-blown ultrafine fibers. Background technique [0002] The preparation of melt-blown ultra-fine fibers is that thermoplastic materials are melted under the blowing of high-speed hot air and stretched extremely to form melt-blown ultra-fine fibers. However, because of its ultra-fineness, its strength is very low and it cannot be used alone. To greatly limit the scope of use of the preparation of melt-blown ultrafine fibers. The usual melt-blown device is to directly lay the net to form a melt-blown cloth after the melt-blown ultrafine fibers are sprayed out, and cannot collect single fibers or fiber bundles, so the properties of the fiber bundles cannot be utilized. Meltblown ultrafine fiber bundles are a collection of countless meltblown ultrafine fibers, so they have a very large specific surface area, and then have a very go...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D02G3/02D02G3/36D01D5/08D01D5/088D01D7/00D01H4/02
CPCD01D5/08D01D5/088D01D7/00D01H4/02D02G3/02D02G3/36
Inventor 邹汉涛王冰张荣波易长海左丹英周阳韦炜
Owner WUHAN TEXTILE UNIV
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