Three-layer composite filter paper and preparation method thereof

A layer composite, filter paper technology, applied in filter paper, filtration separation, separation methods, etc., can solve the problems of affecting the filtration effect, complex production, filter blockage, etc., and achieve long service life, good temperature resistance, and wide application.

Inactive Publication Date: 2016-09-28
TAICANG PAIOU TECH CONSULTING SERVICE
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Problems solved by technology

Both of the above two patents adopt the composite method of secondary processing, the production is complex, the cost is high, and there are obvious interfaces between the layers of the material, which will cause filter blockage and affect the filter effect

Method used

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  • Three-layer composite filter paper and preparation method thereof

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Embodiment 1

[0029] A three-layer composite filter paper, composed of ultrafine glass fiber, polytetrafluoroethylene fiber, polypropylene fiber and adhesive, is characterized in that the three-layer composite filter paper forms a gradient structure material, the continuous change of the internal pore size, the filtration efficiency The relationship with the filter resistance is balanced, and the ideal filter separation effect can be achieved; the diameter of the ultrafine glass fiber is between 3 μm and the fiber length is 7 mm; the diameter of the polytetrafluoroethylene fiber is between 4 μm and the fiber length is 12mm; the diameter of the polypropylene fiber is between 4 μm and the fiber length is 12mm; the adhesive is phenolic resin.

[0030] A kind of preparation method of three-layer composite filter paper is characterized in that comprising the following steps:

[0031] ①Prepare the first layer according to the single-layer filter paper preparation process, put it in a desiccator t...

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Abstract

The invention discloses a three-layer composite filter paper. The first layer of the composite filter paper is polytetrafluoroethylene fiber, the second layer is polypropylene fiber, and the third layer is superfine glass fiber. The invention also discloses a method for preparing a three-layer composite filter paper, the steps of which are as follows: prepare the first layer by a single-layer filter paper preparation process, put it into a hand sheet after drying, sprinkle the second layer of slurry on the surface of the first layer of filter paper, vacuum Dehydration forming, glue spraying treatment, double-layer composite filter paper drying, sprinkle the third layer of slurry to cover the surface of the second layer of filter paper, vacuum dehydration forming, glue spraying treatment, three-layer composite filter paper into the dryer for drying. The three-layer composite filter paper prepared by the invention forms a gradient structure material, and the three different fibers have different adsorption properties to different particles, and has the advantages of high filtration efficiency, high dirt-holding capacity, long service life, good temperature resistance and wide application.

Description

technical field [0001] The invention relates to a method for preparing filter paper, in particular to a method for preparing three-layer composite filter paper, which belongs to the field of filter materials. Background technique [0002] With the rapid development of science and technology, the continuous rise of industries such as electric power, steel, and construction has created a richer, more convenient, and faster life for people. At the same time, environmental pollution is also seriously threatening human life and health. Recently, air pollution The damage to the human body is particularly obvious, and large-scale smog weather strikes repeatedly. As the country pays more and more attention to the quality of the air environment, PM2.5 is included in the new air quality evaluation system. How to use high-efficiency filter materials to reduce harmful gases in the air from entering the human body or effectively filter the emitted harmful gases is imminent. [0003] Fi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21F13/00D21H27/08D21H15/12D21H13/14D21H17/48D21H17/52D21H17/51D21H17/37B01D39/14B01D39/16B01D39/18
CPCD21F13/00B01D39/14B01D39/163B01D39/2024D21H13/14D21H15/12D21H17/37D21H17/48D21H17/51D21H17/52D21H27/08
Inventor 陈照峰李艳明吴操李斌斌王蕾叶信立
Owner TAICANG PAIOU TECH CONSULTING SERVICE
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