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Composite filtering material and manufacturing method thereof

A filter material and composite filter technology, applied in the direction of filter separation, separation methods, chemical instruments and methods, etc., can solve problems such as excessive increase in resistance

Inactive Publication Date: 2018-05-22
ZHEJIANG GOLDENSEA ENVIRONMENT TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the exemplary embodiment of the present invention is to solve the above-mentioned and other deficiencies existing in the prior art, overcome the problem that the resistance increases too much when the filter material is compounded, and provide a filter material compounding method that reduces the compound resistance

Method used

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  • Composite filtering material and manufacturing method thereof
  • Composite filtering material and manufacturing method thereof
  • Composite filtering material and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Prepare the composite filter material in embodiment 1 according to the following steps:

[0048] (1) Provide PET hot-rolled non-woven fabric as a supporting substrate, and the weight per square meter of the PET hot-rolled non-woven fabric is 80g / m 2 , the thickness is 0.35mm, the resistance is 1Pa (0.053m / s wind speed);

[0049] (2) hot-melt spraying the EVA hot-melt adhesive onto the PET hot-rolled non-woven fabric, wherein the softening point of the EVA hot-melt adhesive is 82°C and the viscosity is 3100CPS at a temperature of 150°C;

[0050] (3) Provide PP melt-blown non-woven fabric as filter material, and the gram weight per square meter of the PP melt-blown non-woven fabric is 30g / m 2 , with a thickness of 0.45mm, a filtration efficiency of 99.97% (with 0.3μm particles at a wind speed of 0.053m / s), and a resistance of 30Pa;

[0051] (4) On the fiber glue spray compound machine, use an Ω-shaped fiber glue spray gun to spray glue on the surface of the supporting s...

Embodiment 2

[0055] Prepare the composite filter structure in Example 2 according to the following steps:

[0056] (1) Provide a PET hot-rolled non-woven fabric as a support layer, and the PET hot-rolled non-woven fabric has a weight of 70g / m per square meter 2 , the thickness is 0.30mm, the resistance is 0.5Pa (0.053m / s wind speed);

[0057] (2) Hot-melt spray the EVA pressure-sensitive hot-melt adhesive onto the PET hot-rolled non-woven fabric, wherein the EVA pressure-sensitive hot-melt adhesive has a softening point of 85°C and a viscosity of 5000CPS at a temperature of 150°C ;

[0058] (3) Provide PP electrostatic melt-blown non-woven fabric as a filter layer, and the gram weight per square meter of the PP electrostatic melt-blown non-woven fabric is 20g / m 2 , the thickness is 0.35mm, the filtration efficiency is 99.5% (with PM2.5 particles at a wind speed of 0.053m / s), and the resistance is 20Pa (at a wind speed of 0.053m / s);

[0059] (4) On the fiber glue spray compound machine, ...

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Abstract

The invention relates to a composite filtering material and a manufacturing method thereof. The method comprises the steps of (1) providing a support base material or a first filtering material; (2) hot smelting and spraying hot melt adhesives onto the support base material or the first filtering material, wherein the hot melt adhesives are wave-shaped fiber adhesive tapes which are not overlapped; (3) through the wave-shaped fiber adhesive tapes, adhering a second filtering material onto the support base material or the first filtering material. According to the composite filtering material and the manufacturing method thereof provided by the invention, comprehensive compounding of the filtering materials can be realized through the minimum adhesive dosage, adhesive lines has the least coverage rate on pores of the base material, are impervious and cannot block holes, and the optimal compounding resistance is realized. According to the composite filtering material and the manufacturing method thereof provided by the invention, the produced compounding resistance can be smaller than 1Pa.

Description

technical field [0001] The invention relates to a composite filter material and a manufacturing method thereof, in particular to a fiber spray glue composite method of the filter material. technical background [0002] Electrostatic melt-blown cloth has the characteristics of low resistance and high efficiency, and has excellent air filtration performance, and is often used in masks and air filter products. Since the electrostatic melt-blown cloth is too soft and has no stiffness, it cannot be directly used for folding, gluing, etc. to make filters, and it needs to be compounded with a support material before it can be used for air filters. [0003] The compounding of the filter layer refers to the technology of compounding two kinds of materials that play a filtering and / or supporting role by means of hot rolling, ultrasonic, gluing, etc. Hot rolling compounding and ultrasonic pressure point compounding are commonly used compounding methods for electrostatic meltblown clot...

Claims

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Application Information

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IPC IPC(8): B01D39/14B32B27/02B32B7/12B32B33/00B32B27/12B32B17/12B32B3/28B32B17/02B32B27/36B32B27/32B32B37/12
Inventor 丁伊可洪贤良唐海军
Owner ZHEJIANG GOLDENSEA ENVIRONMENT TECH