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Highly effective filter medium and its manufacturing method and medical protective garment manufactured by the same

A filter material and high-efficiency technology, applied in clothing, protective clothing, separation methods, etc., can solve problems such as inability to achieve, and achieve the effects of good ventilation, improved wearing comfort, fiber diameter uniformity and electrostatic adsorption effect.

Inactive Publication Date: 2006-11-29
THE QUARTERMASTER EQUIPMENT RESEARCH INSTITUTE OF THE GENERAL LOGISITIC DEPARTME +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the fiber filter material produced by the conventional melt-blown process can only achieve the level of sub-high efficiency as an air filter material. To a relatively good extent, but to achieve a good filtration protection effect on 0.07μm tiny viruses, the existing fiber filter materials produced by the conventional melt-blown process cannot achieve

Method used

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  • Highly effective filter medium and its manufacturing method and medical protective garment manufactured by the same
  • Highly effective filter medium and its manufacturing method and medical protective garment manufactured by the same
  • Highly effective filter medium and its manufacturing method and medical protective garment manufactured by the same

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Embodiment Construction

[0027] As shown in Figure 1, take a polypropylene polymer slice with a melt index of 1200MFR and put it into a screw extruder; under the condition of a metering pump speed of 60RPM, the pressure gas produced by the air compressor passes through the gas heater. Heated to 260°C; the screw extruder extrudes the molten polypropylene polymer into the spinneret in the nozzle device, draws it through the hot air with an air velocity of 550m / s, and then lays it on the collector to form fibers The fineness is less than 0.3μm, and the quantitative specification is 20-80g / m 2 Ultra-fine fiber high-efficiency filter material. At this time, the lower suction volume of the collecting device is 65%, the upper suction volume is 60%, and the cooling air output volume is 55%. The ultra-fine polypropylene fiber high-efficiency filter material and the specification of the reinforced base material are 25-30 / m 2 The polypropylene filament non-woven fabric is compounded under the conditions of pre...

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Abstract

The invention relates to a high efficiency filtering material and its making method and the medical protective clothes made thereof. High efficiency filtering material consists of superfine polypropylene melt-blown material and the reinforced base, fibre average fineness of superfine polypropylene melt-blown material is below 0.3mum, standard of said material is 20-80g / m#+[2]; and the mentioned reinforced base is polypropylene long fibre non-woven cloth. The method for making high efficiency filtering material includes the following steps: extruding polypropylene polymers into a multi-position extrusion nozzle by a screw extruder; super extruding by high speed hot gas flow, and forming superfine fibre; cool forming by passing 10cm cool air layer; making superfine polypropylene melt-blown material by a collection device; combining superfine polypropylene melt-blown materials and the reinforced base and then forming high efficiency filtering material. The medical protective cloth has good permeability and virus preventing performance.

Description

technical field [0001] The present invention relates to a kind of high-efficiency filter material and its manufacturing method and articles made of the filter material, in particular to a kind of ultra-fine fiber high-efficiency filter material and its manufacturing method and medical protective clothing made of the ultra-fine fiber high-efficiency filter material . Background technique [0002] At present, the materials used in medical protective clothing sold on the market in my country mainly fall into three categories: ordinary non-woven fabrics, rubber or coated fabrics, and flash evaporation one-time forming filter materials. The efficiency is very low, and the virus cannot be effectively isolated, and its protection efficiency is only about 40%, which cannot meet the minimum requirements of the national standard; protective clothing made of rubber or coated fabrics has a good protective effect, but its air permeability and moisture permeability are poor , the comfort p...

Claims

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Application Information

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IPC IPC(8): B01D39/04A41D13/12A62D5/00
Inventor 唐世君杨廷欣张伟力徐新和苏扬赖军孙幸福
Owner THE QUARTERMASTER EQUIPMENT RESEARCH INSTITUTE OF THE GENERAL LOGISITIC DEPARTME
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