Gb262620 19 is the standard of respiratory protective articles, which is divided into three grades according to the filtration efficiency of masks: 90, 95, 100. This standard is the latest new standard implemented on July 1 2020. Compared with the old 2006 standard, it has increased many test requirements and improved the original test requirements.
Introduction of medical masks:
Most medical masks are made of one or more layers of non-woven fabrics. The main production processes include melt blowing, spunbonding, hot air or needle punching. They have the functions of resisting liquid, filtering particles and bacteria, and are a kind of medical protective textiles.
The medical mask consists of a mask body and a tension band. The mask body is divided into three layers: the inner layer is made of skin-friendly materials (ordinary sanitary gauze or non-woven fabric), the middle layer is made of isolation filter layer (ultra-fine polypropylene melt-blown material layer), and the outer layer is made of special material antibacterial layer (non-woven fabric or ultra-thin polypropylene melt-blown material layer).
According to the performance characteristics and scope of application, medical masks can be divided into: medical protective masks, medical surgical masks and ordinary medical masks.
Usage: carefully cover your mouth and nose with a mask and fasten it to minimize the gap between your face and the mask. When using, avoid touching the mask after touching the used mask. Put on a new clean and dry mask after the mask is wet or contaminated by moisture. Don't reuse disposable masks. Disposable masks should be discarded after each use.
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