What are the testing instruments for portable mask meltblown cloth?

At the beginning of the epidemic, our circle of friends was screened by masks, and many mask manufacturers were real money. Recently, however, it was found that the core material of masks is meltblown cloth, and many speculators threw themselves into the mask-related industrial chain without hesitation, which brought uncertainties to the well-ordered meltblown cloth market. Recently, however, news broke out somewhere: hundreds of meltblown cloth production enterprises were suspended. Why? Because of the quality problem. Although meltblown fabrics have become a hot spot sought after by capital and merchants, the meltblown fabrics produced by many manufacturers are unqualified and fail to meet the standards of medical masks N95 or even KN95, and many meltblown fabrics produced by small workshops have no relevant test reports to prove it.

Therefore, how to improve the quality of mask meltblown fabric depends on professional testing, such as respiratory assistance testing and filtration efficiency testing. Only in this way can the production quality of mask meltblown fabric be improved. The following describes the classification of meltblown fabric testing equipment and its testing standards.

1. Appearance quality inspection problems such as appearance, impurities, frit, thin mesh, color difference and joint quality.

2. Internal quality inspection problems such as longitudinal breaking strength, longitudinal and transverse breaking elongation and mass deviation rate per unit area.

3. Detection of microbial indicators such as total bacterial colonies, total fungal colonies, coliforms and pathogenic pyogenic bacteria.

At present, there are many testing equipments for meltblown fabrics, such as particle filtration efficiency tester, bacterial efficiency tester, ventilation resistance tester and pressure difference tester, airflow resistance tester and respiratory resistance tester, hydrostatic pressure tester and breathability tester. Today, we introduce the filter efficiency tester for meltblown cloth particles. The composition and technical parameters of the filter efficiency tester for melt-blown nonwovens are introduced in detail.

CW-HPC600A handheld laser dust particle counter is a high-sensitivity laser dust particle counter which integrates handheld and desktop printing. Its patented design not only leads the international similar products in sensitivity, resolution and stability of sensor technology. More unique multi-functional integrated design, meet and facilitate the needs of users. It can measure the quantity and distribution of particles in the environment in real time and accurately. Various measurement parameters can be set, such as automatic real-time display, granularity selection, timing, delay and automatic repeated measurement, time and date setting, data storage and printing, counting over-limit alarm lamp function, etc.