One, filtration efficiency

Filtration efficiency is a key indicator of mask quality assessment. This is also one of the important quality standards of non-woven fabrics(Nonwoven SSS Wholesale). Therefore, referring to relevant standards, it is recommended that the bacterial filtration efficiency of non-woven masks should not be less than 95%, and the filtration efficiency of particles should not be less than 30% for non-oil particles.

2. Respiratory resistance

Respiration resistance is the size of the influence that hinders breathing when people wear a mask. Therefore, the breathing resistance of the mask non-woven fabric determines the breathing comfort when wearing the mask. The recommended index for the mask non-woven fabric is that the inhalation resistance should be ≤350Pa and the expiration resistance should be ≤250Pa.

3. Sanitary indicators

Health indicators are naturally another important key indicator of non-woven masks. The recommended testing items here are mainly initial contamination bacteria, total bacterial colonies, coliforms, pathogenic pyogenic bacteria, total fungal colonies, Escherichia coli, Staphylococcus aureus, Candida albicans, residual ethylene oxide, etc.

4, toxicology test

Skin irritation test, mainly considering the protective test test for people allergic to some materials. Refer to the regulations in GB 15979. The skin irritation test of the mask non-woven fabric is mainly to cut a sample of a suitable area, soak it with normal saline, and paste it on the skin, and then cover it with a patch sticker for testing.

The above are the four indicators for the detection of mask non-woven fabrics(SSS Polypropylene Fabric Factory). Among the above four detection indicators, the filtration efficiency of mask non-woven fabrics is very important. Our company reminds the majority of manufacturers and customers and friends of the public that when choosing non-woven fabrics, they must choose mask non-woven fabrics or raw materials with good quality and strong filtering performance.