CN204032437U - A kind of anti-dust respirator filter disc - Google Patents

Abstract

The utility model relates to a mask material. In order to solve the problems of unsatisfactory filtering effect on fine particles and poor comfort in use of existing mask filter materials, the utility model provides a dustproof mask filter. The dust mask filter is composed of multiple layers of filter materials, including non-woven fabrics, nuclear microporous membranes, melt-blown fiber cloth with electrostatic adsorption and non-woven fabrics. Due to the adoption of a reasonable lamination structure and filtering mechanism, the dustproof mask filter of the utility model solves the problem that the filtering effect of the existing mask filter material on fine particles is not ideal, and can better filter out various particles at the same time. It can reduce the dust, bacteria and viruses in the diameter, and reduce the breathing resistance during use, and the comfort is good.

Description

A dust mask filter

technical field

The utility model relates to a mask material, in particular to a dustproof mask filter.

Background technique

In production and life, dust generated by different channels will affect human health. At present, my country is in the process of industrial modernization, and various environmental pollution problems are gradually emerging, among which the impact of dust on people's health is particularly prominent, so the protection of dust has become an urgent problem to be solved. For the large particles in the dust, the existing protective technologies generally have a good protective effect; however, the fine particles in the dust have a long residence time in the atmosphere, a long transportation distance, and are accompanied by toxic and harmful substances (for example, heavy metals). , microorganisms, etc.), can be directly inhaled into the bronchi of the human body, interfere with the gas exchange of the lungs, and cause diseases such as asthma, bronchitis, and cardiovascular disease, which have a great impact on human health and are difficult to protect.

In the existing protective technology, people usually choose to wear a mask to protect the dust in the air. However, because the fine particles in the dust are very penetrating and can easily penetrate the protective layer of the mask, the existing masks The product cannot achieve good protection against it.

At present, there are many types of filter materials used in mask products on the market, mainly including: carbon fiber felt pad, non-woven fabric, gauze, filter paper, melt-blown fiber cloth with electrostatic adsorption, etc. The protective layer of the mask is usually made of the above materials. Consists of multiple layers. Among them, carbon fiber felt pads, non-woven fabrics, gauze, filter paper and other materials are mechanically filtered, that is, particles are retained in them through layer-by-layer barriers. However, these materials can only filter out large particles, and the filtering effect on fine particles is poor; at the same time, in order to improve the filtering effect, masks made of these materials are often thicker, which will make the wearer feel great breathing resistance. Less comfortable. The filtration principle of the melt-blown fiber cloth with electrostatic adsorption is electrostatic adsorption, which has obvious adsorption effect on fine particles with a particle size of less than 0.5 microns, and the adsorption effect increases with the decrease of the particle size of fine particles; however, with electrostatic adsorption The melt-blown fiber cloth has a limited dust holding capacity, and after dust of various particle sizes accumulates on it, its adsorption effect on fine particles decreases rapidly.

It can be seen that the above-mentioned commonly used mask filter materials have unsatisfactory filtering effects on fine particles, and cannot filter out dust of various particle sizes at the same time, and the breathing resistance is obvious, which seriously affects the comfort of use.

Utility model content

In order to solve the problems that the filter materials of existing masks have unsatisfactory filter effects on fine particles, can not filter out dust of various particle sizes at the same time, and have obvious breathing resistance, which affects the comfort of use, etc., the utility model provides a Dust mask filter.

The dust mask filter is composed of multiple layers of filter materials, including non-woven fabrics, nuclear microporous membranes, melt-blown fiber cloth with electrostatic adsorption and non-woven fabrics.

The material of the core microporous membrane is preferably polypropylene, polyester or polycarbonate.

The nuclear microporous membrane is preferably a nuclear microporous membrane in which the average pore diameter of the nuclear micropores is 0.2-3 microns.

The nuclear micropore density of the nuclear microporous membrane is preferably 10 ⁶ -10 ⁹ per square centimeter.

The thickness of the nuclear microporous membrane is preferably 4-25 microns.

The material of the melt-blown fiber cloth with electrostatic adsorption is preferably polypropylene.

The nuclear microporous membrane is a microporous film invented in the early 1970s. Its microporous structure is a cylindrical channel. Compared with the usual mask filter material, its pore size is uniform, it has a clear cut-off threshold, and it has a strong pressure bearing capacity. It is resistant to high temperature disinfection, has good chemical and biological stability, and has no particle shedding.

In the dust-proof mask filter laminated structure of the present utility model, the nuclear microporous membrane is used to block the larger particles in the dust and the larger particles in the fine particles, and filter them out; the melt-blown fiber cloth with electrostatic adsorption It is used to absorb the smaller particle size of fine particles that can penetrate the nuclear microporous membrane barrier; the non-woven fabric provides fixed support and protection for the nuclear microporous membrane and the melt-blown fiber cloth with electrostatic adsorption, and can filter out Some large particles.

Due to the adoption of the above-mentioned laminated structure, after the dust is filtered by the nuclear microporous membrane, only the small particle size part of the fine particles remains, so it can be filtered out by using the melt-blown fiber cloth with electrostatic adsorption, and it can be kept in good condition for a long time the adsorption effect. At the same time, this laminated structure has good ventilation performance and low breathing resistance during use.

In summary, due to the adoption of a reasonable lamination structure and filtering mechanism, the dustproof mask filter of the present utility model solves the problem that the filtering effect of the existing mask filter material on fine particles is not ideal, and can be better at the same time. Filter out dust, bacteria and viruses of various particle sizes, and reduce the breathing resistance during use, with good comfort.

Description of drawings

Fig. 1 schematic diagram of the dustproof mask filter disc of the present utility model.

Reference signs: 1. Non-woven fabric, 2. Nuclear microporous membrane, 3. Melt-blown fiber cloth with electrostatic adsorption, 4. Non-woven fabric.

Detailed ways

Embodiments of the present utility model will be further described below in conjunction with the accompanying drawings.

Example

As shown in accompanying drawing 1, the filter disc of the dustproof mask of the present utility model is successively formed by superposition and compounding of non-woven fabric 1, nuclear microporous membrane 2, melt-blown fiber cloth 3 and non-woven fabric 4 with electrostatic adsorption. The material of the nuclear microporous membrane 2 is polycarbonate, and the material of the melt-blown fiber cloth 3 with electrostatic adsorption is polypropylene. Among them, the mass thickness of non-woven fabric 1 and non-woven fabric 4 is 70 grams per square meter, the mass thickness of melt-blown fiber cloth 3 with electrostatic adsorption is 40 grams per square meter, and the nuclear micropores of nuclear microporous membrane 2 The density is 10 ⁷ /square centimeter, the average pore size of the nuclear micropores is 1 micron, and the thickness of the nuclear microporous membrane 2 is 12 microns.

The filter of the above-mentioned dust mask was tested by simulating dust-containing air, and the results showed that the filter had a good filtering effect on dust of various particle sizes.

The finished mask made of this filter was compared with a variety of masks purchased in the market. Most of the test wearers believed that the mask made of this filter breathed the most smoothly and had a good wearing experience for a long time.

Claims (6)

1. an anti-dust respirator filter disc, is characterized in that: this anti-dust respirator filter disc is formed by multiple filtration material superimposion, comprise successively non-woven fabrics, nuclear pore membrane, static electrification absorption meltblown fibers cloth and non-woven fabrics.

2. anti-dust respirator filter disc as claimed in claim 1, is characterized in that: the material of described nuclear pore membrane is polypropylene, polyester or Merlon.

3. anti-dust respirator filter disc as claimed in claim 1, is characterized in that: the core micropore average pore size of described nuclear pore membrane is the nuclear pore membrane of 0.2-3 micron.

4. anti-dust respirator filter disc as claimed in claim 1, is characterized in that: the core pore density of described nuclear pore membrane is 10 ⁶-10 ⁹individual/square centimeter.

5. anti-dust respirator filter disc as claimed in claim 1, is characterized in that: the thickness of described nuclear pore membrane is 4-25 micron.

6. anti-dust respirator filter disc as claimed in claim 1, is characterized in that: the material of the meltblown fibers cloth of described static electrification absorption is polypropylene.