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High-flux filter material, preparation method thereof and self-inhalation medical mask made of high-flux filter material

A manufacturing method and high-throughput technology, applied in chemical instruments and methods, applications, clothing, etc., can solve problems such as large air resistance and inability to achieve spontaneous breathing, and achieve small air resistance, good ventilation performance, and good ventilation effect. Effect

Inactive Publication Date: 2010-12-29
威海云龙复合纺织材料股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, the air permeability of PTFE filter membrane on the market is 10-100mm / s, and the thickness is 5μm-10μm. It is used as a self-priming medical mask, and the air resistance is still too large to achieve spontaneous breathing.

Method used

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  • High-flux filter material, preparation method thereof and self-inhalation medical mask made of high-flux filter material
  • High-flux filter material, preparation method thereof and self-inhalation medical mask made of high-flux filter material
  • High-flux filter material, preparation method thereof and self-inhalation medical mask made of high-flux filter material

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Embodiment Construction

[0033] Such as figure 1 , figure 2 , image 3 As shown, the manufacturing method of the high-throughput filter material is: firstly, the polytetrafluoroethylene microporous membrane is made. To improve the flux of PTFE microporous membrane, the thickness of PTFE microporous membrane must be reduced. At present, the thickness of PTFE microporous membrane is 5-10 μm. Because it is too thick, the flux cannot be improved. To reduce the thickness, the stretching ratio must be increased, and the stretching ratio is limited by the ductility of the PTFE baseband. Due to the various models, molecular weight ranges, specific gravity, bulk density, and average particle size of PTFE resins, the elongation at break is also different.

[0034] The tensile ratio test of three specifications is as follows:

[0035] PTFE resin model

601A (DuPont, USA)

F106 (Daikin, Japan)

F104 (Daikin, Japan)

molecular weight

15 million-20 million

600,000-5 million

...

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Abstract

The invention relates to a high-flux filter material, a preparation method thereof and a self-inhalation medical mask made of the high-flux filter material. The high-flux filter material is characterized by being prepared by curing PTFE resin, a solvent and a dispersant to prepare a blank, extruding the blank, rolling to form a micropore polytetrafluoroethylene film and compounding a reinforcing base material, wherein the micropore polytetrafluoroethylene film has the grid wire diameter of 0.1mu m of holes, the hole diameter of 0.2 to 0.5mu m, the thickness of 1 to 2mu m and the air permeability of 250 to 300nm / s; and the compounded reinforcing base material is PP non-woven cloth with the surface density of 35g / m<2>. The invention also relates to the preparation method of the high-flux filter material and the self-inhalation medical mask made of the high-flux filter material. The thickness of the porous polytetrafluoroethylene film is 1 to 2mu m; the high-flux filter material which is compounded with the non-woven cloth is nontoxic and has the advantages of high air permeability, low air resistance, high-temperature resistance and acid and alkali resistance; and the manufactured mask ensures smooth breathing, has the air permeability of 250 to 300nm / s and high filtering efficiency, can effectively filter 100 percent of bacteria-bearing dust, and prevents various bacteria which are transmitted in the air at a filtering efficiency of over 95 percent.

Description

technical field [0001] The invention relates to a high-throughput filter material and its manufacturing method and articles made with the filter material, in particular to a polytetrafluoroethylene microporous film high-flux filter material and its manufacturing method and the use of the polytetrafluoroethylene A self-priming medical mask made of ethylene microporous film high-flux filter material. Background technique [0002] Self-priming medical masks have become indispensable medical supplies in the process of preventing and controlling human diseases, and they must be able to effectively filter out airborne germs. The airborne germs are very small in diameter, for example, SARS is 0.1-0.12 μm, and H1N1 is 0.08-0.12 μm. Therefore, the basic standards set for self-priming medical masks are N95 and N100, that is, the filtration efficiency should be greater than 95%, R greater than 99.9 (0.3 μm), and at the same time meet the requirements of easy and spontaneous breathing....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D71/36A41D13/11B01D69/12
Inventor 黄猛洪英王怀志梁升香毕鹏程
Owner 威海云龙复合纺织材料股份有限公司
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