Mask non-woven fabric is an important raw material for the manufacture of masks. Because masks are used for medical and health purposes, the quality must meet the relevant standards. Today I will take a look at the four non-woven mask inspections of rainbow non-woven fabrics. index.

1. Filtration efficiency

Filtration efficiency is a key indicator of mask quality assessment. This is also one of the important quality standards for non-woven fabrics, so referring to the relevant standards, it is recommended that the bacterial filtration efficiency of mask non-woven fabrics should be no less than 95%, and the filtration efficiency of particles for non-oily particles is not less than 30%.

2.respiratory resistance

Respiratory resistance, for people wearing masks, hinders the size of the breathing influence. Therefore, the breathing resistance of the mask nonwoven fabric determines the breathing comfort when wearing the mask. The recommended index of the mask nonwoven fabric is that the inhalation resistance should be ≤350Pa and the exhalation resistance should be ≤250Pa.

3. Health index

Hygiene index is naturally another important key index of non-woven masks. The recommended testing items here are mainly initial contamination bacteria, total bacterial colonies, coliforms, pathogenic pyogenic bacteria, total fungal colonies, E. coli, Staphylococcus aureus, Candida albicans, ethylene oxide residues, etc.

4. Toxicology test

The skin irritation test is mainly a protective test for people who are allergic to some materials. Refer to the regulations in GB 15979. The mask non-woven skin irritation test is mainly to cut the sample of a suitable area in a cross-section manner, soak it in physiological 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. Among the above four detection indicators, the filtration efficiency of mask non-woven fabrics is very important. Rainbow non-woven fabric reminds the majority of manufacturers' customers and friends of the public, when choosing non-woven fabrics, we must choose mask non-woven fabrics or raw materials with good quality and strong filtering performance.