1. Non-woven fabric
Non-woven fabrics mostly use polypropylene pellets as raw materials. It is moisture-proof, breathable, flexible, light, and non-combustible. It is easy to decompose, non-toxic and non-irritating, rich in color and low in price. Recyclable and other features. The non-woven fabric has no warp and weft threads, so it is very convenient to cut and sew. Moreover, it is light in weight and easy to shape, which is very popular among craft lovers. It is not interwoven and knitted together one by one yarn, but the fibers are directly bonded together by physical methods, so when you get the sticky scale in your clothes, you will find that it is Can't pull out the end of the thread. Non-woven fabric breaks through the traditional textile principle, and has the characteristics of short process flow, fast production rate, high output, low cost, wide use, and multiple sources of raw materials. However, the disadvantage is that it has poor strength and durability compared with textile fabrics. It cannot be cleaned like other fabrics. The fibers are arranged in a certain direction, so it is easy to split from the right angle direction and so on. Therefore, the improvement of the production method mainly focuses on the improvement of preventing splitting.
2. Melt blown cloth
Melt blown cloth is mainly made of polypropylene. There are many voids, the structure is fluffy, and the ability to resist wrinkles is good. Therefore, it has good filterability. Good shielding, thermal insulation and oil absorption. It can be used for air, liquid filter materials, isolation materials, absorption materials, mask materials, and thermal insulation materials. Medical masks are generally multi-layer structures, referred to as SMS structures. The two sides are single-layer spunbond layer (S), and the middle is a single-layer or multi-layer melt-blown layer (M). The material of the melt-blown layer is melt-blown cloth. The most important thing inside is the melt blown layer M (ie the filter layer), commonly known as the heart of the mask-melt blown cloth, which is mainly used to isolate droplets, particles, acid mist, microorganisms, etc. If you don’t know whether your mask is anti-virus, just look at whether there is a meltblown cloth in the mask.
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