Do you know the standard for testing meltblown cloth | Guidenonwoven.com
One of the important quality standards for meltblown cloth, filtration efficiency is a key indicator for the quality evaluation of masks. Therefore, referring to relevant standards, we recommend that the 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-oily particles. The size of the influence that people wear masks to hinder breathing. Therefore, the breathing resistance of the mask non-woven fabric determines the breathing comfort when wearing the mask. The index we recommend here is that the inhalation resistance should be ≤350Pa and the expiration resistance should be ≤250Pa. Here we recommend testing items mainly for initial contamination bacteria, pathogenic pyogenic bacteria, Candida albicans, Staphylococcus aureus, Escherichia coli, coliforms, total bacterial colonies, total fungal colonies, residual ethylene oxide, etc. Medical masks are usually made of one or more layers of