Why not have a mask machine create a mask, a mask is because of lack of core material: meltblown.
Why not have a mask machine create a mask, a mask is because of lack of core material:. the end of February, media reports, there are factory official said, meltblown currently one ton price rose to $ 300,000 and now there is no stock, a price one day. more than one month, many companies are converting masks, meltblown prices despite the price increase is large, but the country meltblown missing out badly, not so much meltblown supply market, now on the cards in the meltblown on the link.
meltblown What is
have been used to cut a medical mask, you will find: There are three masks, (inner) layer of moisture, (middle) filter core layer, and (layer) of water-repellent layer. as produced in accordance with state regulations, surgical masks comprising at least three layers of nonwoven fabric (N95 masks level, optimized structure 🙁 middle layer) was filtered core layer number more, the thicker). Meltblown, commonly known as the mask of the \”heart\” is the middle layer of the mask filter, to filter bacteria, prevent the spread of germs. Is a meltblownwith a high melt index for the material, in random directions by a laminated film obtained by adding a number of criss-cross fiber, fiber diameter 0.5 to 10 m, fiber diameter about thirty hair one points. The figure is meltblown structure Photo taken:
will see the picture you are not worried about such a big gap meltblown , is how the virus filtration environment it? While the novel coronavirus small size, about 100 nanometers (0.1 microns), but the virus can not exist independently, which mainly transmitted through secretions and droplets, the size of the droplets when sneezing about 5 microns, which is the a second, upper essentially a meltblown fiber filter, the virus-containing droplets near meltblown, will be electrostatically adsorbed on the surface, it can not be transmitted.
S-layer and a mask layer although the M-specific raw materials are polypropylene resins, and other special material but meltblown nonwoven materials in the production process and there is a big difference in performance. meltblownHow to the Compound meltblown polypropylene is a high melt index. The higher the melt index of the polypropylene, the more fine meltblown fibers, meltblown made of the better filterability.
Let\’s see how meltblown produced:
Content extension: Comparative N95 masks and a cross-sectional view of the medical surgical masks, SEM images can be clearly seen, surgical masks meltblown thickness of 156 microns and the level N95 masks meltblown layer thickness 521 m, is 3 times a surgical mask.