What are the test items for mask determination | Guidenonwoven.com
Due to the impact of the epidemic, the demand for melt blown cloth remains high. However, so far, there have been a large number of unqualified melt blown cloths on the market. In order to facilitate enterprises to understand, we briefly summarize several major melt blown cloth testing items: 1. Filtering power The air extracted from the melt blown cloth detected by the particulate detector is equivalent to the air inhaled. The number of particulate matter measured in it represents the concentration of air particles after wearing a mask. Simply put, this concentration is the same as the environmental particulate matter outside the melt blown cloth. The ratio of the concentration is the leakage rate of the melt blown cloth. As we all know, filter power is a key indicator for the quality of melt blown cloth. This is also one of the important quality specifications of melt blown cloth, so refer to relevant specifications, the filter power (dust resistance rate) of melt blown cloth