Gray Exhalation Valve Disposable Active Carbon Air Pollution Dust Masks

Description of  Gray Exhalation Valve Disposable Active Carbon Air Pollution Dust Masks:

KN95 masks, sanitary and convenient for using.

Made of high quality material, safe, soft and comfortable.

≥95% filtration, anti-dust protection for you.

Protect you from airborne particulates and pollution.

Elastic straps and adjustable nose clip for different face shapes and sizes. Perfect for daily use and outdoor activities.

Color: White

Type: ears wearing  What is a non-woven mask?

There are two kinds of non-woven masks. One is made of pure cotton absorbent gauze or knitted fabric with various non-woven fabrics sandwiched between.

The other is sewn directly from nonwoven fabric.

Its filtration effect is good, breathable slightly poor, the latest varieties for the surface and back for non-woven material, the middle for the filter paper, so that the non-woven mask filtration effect of a higher level.

The relevant documents on the technical requirements of medical protective masks were issued by the General Administration of Quality Supervision, Inspection and Quarantine on April 29, 2003 and implemented on the same day.

Material: non-woven fabric.

Purpose: Filtering   Structural components

Non-woven masks are the most widely used category in our daily work.

The structure of a non-woven cloth mask should be divided into two parts. One is the main body of the mask, which can be simply understood as a shelf of the mask.

The other is the filter material part, including the filter cotton used for dustproof and chemical filter box used for poison prevention.

Therefore, for the selection of filter masks, some products of Guangjia provide you with the following convenience: you can use the same mask body, and when dust prevention is needed in the dust working environment, you can match it with the corresponding filter cotton, so that you can wear a dust prevention mask;

When it is necessary to prevent virus in a toxic environment, replace the filter cotton and install the corresponding chemical filter box, so that it becomes a respirator again, or according to your work needs, provide you with more combinations.    Selection principle

Folding dust resistance efficiency

The dust resistance efficiency of a non-woven mask is based on its barrier efficiency for fine dust, especially for respirable dust under 5 micrometers.

Because this size of dust can be directly into the alveoli, the impact on human health is the greatest.

General gauze mask, its dust resistance principle is mechanical filtering, is when dust collision into gauze, through - layer upon layer barrier, will be some large particles of dust in the sand.

However, some fine dust, especially those smaller than 5 microns, can pass through the mesh of the gauze and enter the respiratory system.

Now there are some dust masks abroad, the filter material is composed of fiber-filled with permanent static electricity, those smaller than 5 microns of respirable dust in the process of passing through this filter material, attracted by static electricity and adsorption in the filter material to capture the fine dust, really play the role of dust resistance.  

 Degree of folding tightness

Air, like water flow, flows first where there is little resistance.

When the shape of a non-woven mask is not close to the face, air hazards will leak into the air and enter the respiratory tract.

So, even if you choose the filter material again good mask.

It doesn't protect your health.

Many foreign regulations and standards stipulate that workers should be regularly tested for the tightness of non-woven masks.

The purpose is to ensure that workers choose suitable non-woven masks and wear masks according to the correct procedures.    

 Use Tips of  Gray Exhalation Valve Disposable Active Carbon Air Pollution  Dust Masks

1.Open the mask flat

2.Face the mask without the nose clip so that the nose clip is above the mask

3.Pull the ear-band behind your ear

4.From the middle of the nose clip, press inwardly according to the shape of the bridge of the nose from both sides until it is fully pressed into the shape of the bridge of the nose. Using only one band to pinch the mask.

5.Before entering the work area, you must check the tightness of the mask to the face