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Needling static filter cotton and preparation method thereof

A technology of acupuncture and filter cotton, which is applied in the field of air purification, can solve the problems of high filtration resistance, low strength, high porosity, etc., and achieve the effects of small filtration resistance, large dust holding capacity, good strength and elongation

Active Publication Date: 2014-01-29
常州百朋纺织有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the melt-blown filter material has two unsolvable defects: one is that the filtration resistance is very large; the other is that its strength is very low and basically has no strength
[0004] Ordinary fluffy needle-punched filter media has the advantages of large pores, high porosity, three-dimensional internal structure, and extremely small filtration resistance, but its filtration efficiency is poor, so it can only be used for primary filtration rather than In the medium and high efficiency filter

Method used

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  • Needling static filter cotton and preparation method thereof
  • Needling static filter cotton and preparation method thereof
  • Needling static filter cotton and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Embodiment 1: a kind of preparation method of acupuncture electrostatic filter cotton, this method comprises the steps:

[0040] 1) Fabrication of needle-punched non-woven layer: The chopped polypropylene fibers are loosened, mixed, carded, and laid in sequence to make a relatively fluffy polypropylene fiber web, and the weight of the polypropylene fiber web is 35g / m 2 , the degree of longitudinal fiber orientation is 87, and the ratio of longitudinal and transverse strength is 2.9; then, the polypropylene fiber web is processed on the front and back sides by two needle punches, and the needle punch density is 155 punches / cm 2 , Reinforced into a needle-punched non-woven layer, the working temperature of the production workshop is controlled at 22-26°C, and the humidity is controlled at 50-60%RH.

[0041] 2) Drying process: pre-dry the needle-punched non-woven layer obtained in step 1), and then bake to obtain needle-punched filter cotton; the pre-drying temperature is ...

Embodiment 2

[0048] 1) Production of needle-punched non-woven layer: The polypropylene chopped fibers are opened, mixed, carded, and laid in turn to make a relatively fluffy polypropylene fiber web. The degree of orientation is 76, and the aspect ratio is 2.5. Then, the polypropylene fiber web is processed on the front and back sides by two needle punches, and the needle punch density is 206 punches / cm 2 , Reinforced into a needle-punched non-woven layer, the working temperature of the production workshop is controlled at 22-26°C, and the humidity is controlled at 50-60%RH.

[0049] 2) Drying process: pre-dry the needle-punched non-woven layer obtained in step 1), and then bake to obtain needle-punched filter cotton; the pre-drying temperature is 40°C, the curing temperature is 50°C, and the drying temperature is 50°C. The drying time is 2 minutes.

[0050] 3) Pass the acupuncture filter cotton treated in step 2) through a high-voltage corona discharge electric field, the voltage is 46KV...

Embodiment 3

[0056] 1) Production of needle-punched non-woven layer: The polypropylene chopped fibers are opened and mixed, carded, and laid in turn to make a relatively fluffy polypropylene fiber web. The degree of orientation is 45, and the aspect ratio is 1.6. Then, the polypropylene fiber web is processed on the front and back sides by two needle punches, and the needle punch density is 438 punches / cm 2 , Reinforced into a needle-punched non-woven layer, the working temperature of the production workshop is controlled at 22-26°C, and the humidity is controlled at 50-60%RH.

[0057] 2) Drying process: pre-dry the needle-punched non-woven layer obtained in step 1), and then bake to obtain needle-punched filter cotton; the pre-drying temperature is 50°C, the baking temperature is 65°C, and the drying temperature is 65°C. The drying time is 3 minutes.

[0058] 3) Pass the acupuncture filter cotton treated in step 2) through a high-voltage corona discharge electric field, the voltage is 6...

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Abstract

The invention discloses needling static filter cotton. The needling static filter cotton comprises a needling non-woven layer, wherein any surface or two surfaces of the upper surface and the lower surface of the needling non-woven layer is or are provided with a spunbonded nonwoven fabric layer. A preparation method of the needling static filter cotton comprises the following steps of producing a needling cotton, drying, compositing the needling cotton, applying static electricity and packaging a finished product. The needling static filter cotton provided by the invention has the advantages that the needling cotton is composited, the wind pressure resistance of the needling cotton is enhanced, so that the needling cotton plays the supporting role, the high-density electrostatic charge is applied on the needling cotton, so that not only is the filter efficiency greatly improved to enable the filtration efficiency to be more than 98%, and also the filtration resistance is greatly reduced to be reduced to be below 7Pa. The needling static filter cotton after processing has the outstanding characteristics that the filtration efficiency is high, the filtration resistance is ultralow and the service life is long, the physical properties such as longitude and latitude brute force property and a wear-resisting property are excellent, and the needling static filter cotton is greatly superior to the common melt-blow static filter cotton at present.

Description

technical field [0001] The invention belongs to the field of air purification, and relates to an acupuncture electrostatic filter cotton, specifically an acupuncture electrostatic filter material and a preparation method thereof. Background technique [0002] People spend at least 80% of their lives indoors. With the improvement of people's living standards and the rapid development of science and technology, people have put forward higher requirements for indoor air quality. Indoor and partial purification products such as air purifiers, vacuum cleaners, masks and air conditioners have become daily necessities for families. As the core component of the above products, the filter material must have high filtration efficiency, low resistance and high dust holding capacity. [0003] Due to its low hygroscopicity, no mildew, no moth, good wear resistance, excellent corrosion resistance, and low cost, polypropylene fiber is favored by the household filter industry and has becom...

Claims

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Application Information

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IPC IPC(8): B01D39/14B32B5/26B32B27/02D06M10/02
Inventor 云高杰
Owner 常州百朋纺织有限公司
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