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Production of high-density topping filtering material from three gradient

A technology of filter material and manufacturing method, which is applied in the field of non-woven fabrics, can solve the problems of unsatisfactory dust stripping effect and difficult further improvement of filtration efficiency, and achieve good stripping effect, considerable economic benefits, and low manufacturing cost.

Inactive Publication Date: 2005-12-28
孙熙
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, it is difficult to further improve the filtration efficiency of the needle-punched filter materi...

Method used

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  • Production of high-density topping filtering material from three gradient
  • Production of high-density topping filtering material from three gradient
  • Production of high-density topping filtering material from three gradient

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) Firstly, the 1.5dtex PPS fiber, glass fiber base cloth and 3.5dtex PPS fiber are used to form a two-layer fiber web with different fine and thick layers in the middle interlayer at the same time through the fiber-forming process equipment, and are fed into multiple needles together. Needle-punched blanks are formed by the loom, and the needle-punched density is 200 needles / cm 2 (2) Place a 0.85dtex PPS fiber net on the 1.5dtex PPS fiber net, and then enter the last few needle punching machines to perform needle felting, and the needle punching density is 200 needles / cm 2 (3) heat setting, singeing, and calendering of the needle felt to form a filter material with a three-gradient structure and a high-density surface layer with micropores and a smooth surface.

Embodiment 2

[0026] (1) Firstly, the process equipment of 1.5dtex polyester (PET) fiber, polyester (PET) base cloth and 4.5dtex polyester (PET) fiber are respectively collected into two fibers to form a web at the same time, and the upper and lower layers of the middle interlayer are formed at the same time. Layers of fiber web are fed into multi-channel needling machines together to form needling blanks with a needling density of 250 needles / cm 2 ; (2) Put 0.5dtex PET fiber net on the 1.5dtex PET fiber net, then enter the spunlace machine for spunlace, the spunlace density is 100 needles / cm 2 (3) After spunlace, the superfine fiber is used as the upper layer, the fine fiber is used as the middle layer, and the composite needle felt of polyester base cloth and thick fiber is heat-set, singeing, and calendered to make a three-dimensional felt. Gradient high-density surface layer microporous surface filter material.

[0027] Example

[0028] The above fiber codes are marked accord...

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Abstract

A process for preparing the trigradient high-density planar filter material includes such steps as overlaying the fine fibre mesh, cloth substrate and thick fibre mesh, needling, arranging the superfine fibre mesh on said fine fibre mesh, needling to obtain felt, thermally fixating its shape, singeing, and rolling.

Description

technical field [0001] The invention belongs to the technical field of nonwoven fabrics. The invention provides a method for manufacturing novel filter material by using non-woven fabric technology. The material can be used in the collection of smoke and dust purification materials and equipment protection, and can also be used in the technical fields of liquid-solid separation and gas-solid separation. Background technique [0002] Filter materials are widely used in various sectors of the national economy, and it is mainly used as a means of gas-solid separation and liquid-solid separation. Filter materials are usually divided into two categories according to the weaving method: woven filter materials and non-woven filter materials, of which non-woven filter materials are mainly manufactured by acupuncture. At present, acupuncture filter material, as the core component of bag filter, has been widely used in various industries such as steel, cement, nonferrous metallurgy, ...

Claims

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Application Information

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IPC IPC(8): B01D39/02
Inventor 孙熙刘光日
Owner 孙熙
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