There are two types of non-woven masks. One is made of pure cotton degreased gauze or knitted fabric with various non-woven fabrics sandwiched between them; the other is directly sewn from non-woven fabrics. Its filtering effect is good, and the breathability is slightly worse. The latest varieties are non-woven materials on the front and back, and filter paper in the middle, so that the non-woven masks have a higher filtering effect.
Non-woven masks are the most widely used category in our daily work. The structure of a non-woven mask should be divided into two parts. One is the main body of the mask. We can simply understand that it is the frame of a mask. The other is the filter material, including filter cotton for dust prevention and antivirus Chemical filter box and so on.
Therefore, for the selection and use of filter masks, some manufacturers' products provide you with the following convenience, that is, you can use the same mask body, when the dust needs to be dustproof in the working environment, equipped with the corresponding filter Cotton, so you put on a dust respirator; when you need to repel in a toxic environment, replace the filter cotton and install the corresponding chemical filter box, so it becomes a respirator, or according to Your job needs to provide you with more combinations.