Mask non-woven fabric is an important raw material for manufacturing disposable masks. Since masks are materials used for medical and health care, their quality must meet relevant standards. Today, Shanghai Gel King Insulation Products Co., Ltd will take you to understand the four detection indicators of non-woven masks.
1. Filtration efficiency
Filtration efficiency is a key indicator for evaluating the quality of masks. This is also one of the important quality standards of non-woven fabrics (non-woven fabric SSS wholesale). Therefore, referring to the relevant standards, it is recommended that the non-woven mask has a bacterial filtration efficiency of not less than 95%, and the particle filtration efficiency of non-oily particles is not less than 30%.
2. Breathing resistance
Respiratory resistance is the size of the effect 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 non-woven masks is that the inhalation resistance should be ≤350Pa, and the exhalation resistance should be ≤250Pa.
3. Sanitary indicators
Health indicators are naturally another important key indicator of non-woven masks. The testing items recommended 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
The skin irritation test mainly considers the protective test for people who are allergic to certain materials. Refer to the regulations of GB 15979. The skin irritation test of the mask non-woven fabric is mainly to cut the sample in the appropriate area, soak it with saline, then paste it on the skin, and then cover it with a patch. Test stickers.
The above are the four indicators for detecting non-woven masks. Among the above four detection indicators, the filtration efficiency of the mask non-woven fabric is very important. Our company reminds the majority of manufacturers, customers and public friends that when choosing non-woven fabrics, they must choose a reliable disposable mask manufacturer, and choose mask non-woven fabrics or raw materials with strong filtering performance.