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High-efficient low-resistance compound filter material and preparation method thereof

A filter material and composite filtration technology, applied in the direction of filtration separation, separation methods, chemical instruments and methods, etc., can solve the problems of low filtration efficiency, poor stiffness, instability, etc.

Active Publication Date: 2009-01-28
TONGXIANG JIANMIN FILTER MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is that the stability of the filtration efficiency is poor. When filtering oily particles, the filtration efficiency is low, unstable, and poor in stiffness.

Method used

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  • High-efficient low-resistance compound filter material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Embodiment 1 Preparation of high-efficiency and low-resistance composite filter material

[0029] Put the melt-blown filter material and glass fiber filter material on the discharge rack, pass through the guide roller, apply fiber glue to the surface of the glass fiber with a hot-melt adhesive fiber gun, then attach the melt-blown filter material to it, and finally wind up finished product.

[0030] The fineness of the hot melt adhesive fiber is 30 microns, and the amount of viscose glue per square is 5g.

[0031] The melt-blown filter material is prepared by the following process: the modified polypropylene chips are extruded through the spinneret in a molten state, and the melt leaving the spinneret holes is blown into ultrafine fibers under the action of high-speed hot air, The fibers fly to the condensate curtain at high speed to form a fiber web, and then formed by electret to obtain a melt-blown filter material. The physical parameters of the prepared meltblown ...

Embodiment 2

[0037] The preparation conditions of the melt-blown and glass fiber materials in Example 1 were changed to obtain composite filter materials with different thicknesses, fineness, grammage, filtration efficiency and resistance.

[0038] The physical parameters of the prepared meltblown filter material are: thickness = 0.10mm, gram weight = 15g / m 2 , Filtration efficiency = 81% (test particle size: 0.3 μm, test filtration rate 5.3cm / s), resistance = 13Pa.

[0039] The physical parameters of the prepared glass fiber filter material are: thickness=0.20mm, gram weight=65g / m 2 , Filtration efficiency = 92% (test particle size: 0.3 μm, test filtration rate 5.3cm / s), resistance = 88Pa.

[0040]The performance test results of the high-efficiency and low-resistance composite filter material obtained by combining two layers of melt-blown filter material with the two surfaces of a layer of glass fiber filter material are shown in Table 3:

[0041] table 3

[0042] Filtration e...

Embodiment 3

[0044] The preparation conditions of the melt-blown and glass fiber materials in Example 1 were changed to obtain composite filter materials with different thicknesses, fineness, grammage, filtration efficiency and resistance.

[0045] The physical parameters of the prepared meltblown filter material are: thickness = 0.14mm, gram weight = 25g / m 2 , Filtration efficiency = 96% (test particle size: 0.3 μm, test filtration rate 5.3cm / s), resistance = 18Pa.

[0046] The physical parameters of the prepared glass fiber filter material are: thickness=0.20mm, gram weight=65g / m 2 , Filtration efficiency = 99.7% (test particle size: 0.3 μm, test filtration rate 5.3cm / s), resistance = 220Pa.

[0047] The performance test results of the high-efficiency and low-resistance composite filter material obtained by combining a layer of melt-blown filter material with a layer of glass fiber filter material are shown in Table 4:

[0048] Table 4

[0049] Filtration efficiency (%)

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Abstract

The invention provides a high-efficiency and low-resistance composite filter material and a preparation method thereof. The high-efficiency and low-resistance composite filter material is formed by the composing of at least a layer of fusing spray filter material and a layer of fibreglass filter material; the preparation method of the high-efficiency and low-resistance composite filter material comprises the following steps that: the fusing spray filter material and the fibreglass material are arranged on a material receiving frame and pass through a guiding roller; a hot fusing glue fibre gun is used for coating the fibre glue on the surface of the fibreglass; subsequently, the fusing spray filter material is attached to the fibreglass; finally, the finished product is gained by coiling. The high-efficiency and low-resistance composite filter material of the invention has high filter efficiency, extremely low filter resistance and high dust receiving capacity.

Description

(1) Technical field [0001] The invention relates to a high-efficiency and low-resistance composite filter material and a preparation method thereof. (2) Background technology [0002] Generally, glass fiber filter materials are made by papermaking process, and the filter materials are directly used to process filter devices. It is also combined with thick fiber non-woven fabric, using thick fiber non-woven fabric as support material to improve the strength of glass fiber filter material, but it increases the resistance of glass fiber filter material, and the resistance increases by about 10Pa. The existing glass fiber filter material mainly uses glass fiber, and the weight of the material is 78±5g / m 2 , It is characterized by high filtration efficiency and good stability. The filtration efficiency has been rising during use, and the filtration efficiency has a small decrease under high filtration speed, and the stiffness is good. The disadvantage is that the resistance is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D39/14B32B5/26B32B7/12B32B37/00
Inventor 陈胜发
Owner TONGXIANG JIANMIN FILTER MATERIALS
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