The detection of meltblown fabrics can be divided into appearance quality monitoring (fabric appearance, holes, impurities, odor, micropores, crystallizing point, frit, hard thread, unreinforced area, sparse mesh, width deviation, color difference and seam quality), internal quality detection (mass deviation rate per unit area, longitudinal breaking strength, transverse breaking strength, longitudinal and transverse breaking elongation, hydrostatic pressure and air permeability) and microbial index detection (total number of colonies). The required equipment is meltblown fabric particle filtration efficiency tester, meltblown fabric bacterial efficiency tester, ventilation resistance tester and differential pressure tester, airflow resistance tester and respiratory resistance tester, meltblown fabric longitudinal breaking strength tester, transverse breaking strength tester, longitudinal breaking elongation tester, hydrostatic pressure tester and meltblown fabric permeability tester.
At present, the standards for evaluating microbial indicators of products are: GB/T 326 10-20 16 technical specification for daily protective masks, YY 0469-201surgical masks, YY/T 0969-20 13 disposable masks. According to GB 19083-20 10 "Technical Requirements for Protective Masks", enterprises can carry out it according to the actual production situation of products. If a mask is used, the product should be marked sterile, and the method and expiration date should be indicated. Test of resistance and filtration efficiency in GB2626-2006 "Breathing Protection Self-filtering Anti-particulate Respirator".
In the process of selecting the meltblown fabric detector, we asked other consumer groups of the detector to listen to their comments and see how they described the service attitude and after-sales system of this manufacturer. Don't be too obsessed with the price level. If the equipment you buy can't meet your daily use, no matter how cheap it is, it can't run safely and stably! From the perspective of cost performance, it can make all commercial users have a reliable, stable and safe operation.
Three-channel high-precision hand-held laser dust particle counter CW-HPC300A was designed by Shenzhen Sainawei according to international standards ISO 14644- 1 and GMP. Available in Chinese and English versions, it can detect three kinds of particle sizes at the same time (users can set the particle sizes to be detected at will), and it can be downloaded at high speed through USB interface. It can be widely used in clean room environment detection, indoor environment detection and filtration in electronic industry and pharmaceutical industry.