The melt blown cloth can be called the "heart" of medical surgical masks and N95 masks. Medical surgical masks and N95 masks generally adopt multi-layer structure, which is called SMS structure for short: single-layer spunbond layer (s) is on both sides inside and outside; melt blown layer (m) is in the middle, which is generally divided into single layer or multi-layer.
Specifically, the flat mask is generally PP Spunbond + melt spray + PP Spunbond, or short fiber can be used for one layer to improve the skin touch. The three-dimensional cup-shaped mask is usually PET polyester needled cotton + melt blown + needled cotton or PP Spunbond. Among them, the outer layer is a non-woven fabric with waterproof treatment, which is mainly used to isolate the droplets from the patients; the middle layer is a specially treated non-woven fabric with good filtration, shielding, heat insulation and oil absorption, which is an important raw material for the production of masks; the inner layer is a common non-woven fabric.
At present, China's export-oriented industry chain is complete, and filter material is the key core material of the mask industry chain. The link of melt blown filter material may face capacity bottleneck, and the upstream enterprises benefit most from this link. The core upstream raw material of the mask is high melting fiber polypropylene, with sufficient domestic production capacity and stable price. In the upstream material industry chain of the whole mask, when the demand suddenly increases, the link of melt blown filter material may face the bottleneck of production capacity. For medical three-layer gauze free, the production of 5 billion medical masks requires 100000 tons of melt blown non-woven fabric, which is in great demand.
Under the novel coronavirus pneumonia, some enterprises are willing to spend heavily on gold and spend millions of transformation. After all, the market of protective melted cloth has reached the extreme. There is a hard market demand and even a private market transaction. The price of melt blown cloth has been fried to 200 thousand to 40 tons. Some merchants involved in the melt blown cloth transaction reported to the reporter that the price of melt blown cloth has doubled after the year, which can be described as one price a day.