Meltblown cloth, commonly known as the "heart" of the mask, is the filter layer in the middle of the mask, which can filter out bacteria and prevent the spread of germs.As the "core" of masks, the "meltblown cloth" produced by S2040 cannot be used to make masks, which has a negative impact on the overall situation of epidemic prevention.
Meltblown cloth test item
Meltblown cloth to do the test report generally do resistance test, filtration efficiency test, microbial detection and so on these three items, high quality meltblown cloth to see whether these indicators are up to standard.
Classification of medical masks
Medical protective mask Level 1 >;FFP2>KF94>Grade A >KN95 masks >KN90/B /C /D mask>;Surgical mask>Disposable medical masks.
A key part of a virus-resistant mask is the filtration material.The filtering effect of the filter material on the particles mainly includes gravity settling, interception, inertial collision, diffusion, electrostatic adsorption, etc. Under the joint action of various filtering mechanisms, there exists a minimum filtration efficiency value for the particles with aerodynamic particle size of 0.3 m, which is also known as the most permeable particle size (MPPS).
Post time: Nov-20-2020