Do you really know the structure of KN95 mask? _ Fiber

Original title: Do you really understand the structure of KN95 mask? Do you really know the structure of KN95 mask? Medical masks and protective masks are non-woven materials,Medical Quickly Delivery Antivirus Coverall, composed of directional or random fibers, generally multi-layer structure,free shipping disposable coverall, usually referred to as SMS structure (2 layers of S layer and 1 layer of M layer). At present, KN95 Face Mask with Five Layers ,Virus Prevention Mask 3 Ply with Earloop, the highest number of layers in China is 5, namely SMMMS (2 layers of S and 3 layers of M). S represents a Spunbond layer and M represents a barrier layer or a Meltblown layer M, both of which are composed of polypropylene (PP). Melt-blown nonwovens are used as the filter layer in the M layer. Because the fibers are randomly distributed and have complex three-dimensional pores, the M layer is composed of superfine fibers with large specific surface area and strong adsorption capacity for particles. The fibers of the melt-blown filter material are randomly distributed A large number of tiny pores are formed, and the pores are evenly distributed, the filtering resistance is small, and the filtering efficiency is high, so that the filtering performance of the non-woven medical protective mask is far superior to that of the traditional gauze mask. The SMS non-woven fabric is mainly made of polypropylene PP (with natural bacteriostasis and hydrophobicity),3 Ply Disposable Protective Face Mask, and the fiber diameter can reach 0.5-10 um. These superfine fibers with unique capillary structure increase the number and surface area of fibers per unit area, so that the melt-blown fabric has good air filtration and is a good mask material. Therefore, the laser marking surface is a non-woven fabric made of S-layer polypropylene. Return to Sohu to see more Responsible Editor:. zjyuan-group.com

Original title: Should the office supplies purchased by the company be included in fixed assets or.. Ask: We are small-scale taxpayers. The company pu...

Diuwin Game is a popular online gaming and prediction platform that blends fun with real rewards.

Tiranga Game is a top notch online gaming platform in gaming niche, where you can play exciting games and earn unlimited real cash reward! If you are...

Tiranga is an online game platform that offers players a variety of interactive and fast-paced gaming options. Designed for both beginners and experie...

Step into the world of Diuwin , where excitement meets strategy. Whether you’re a casual player or a competitive gamer, Diuwin offers thrilling chal...

Rinku Mehndi Art is synonymous with the Best Portrait Mehandi Artist in Delhi, where creativity and perfection are the two major driving forces of the...