The weight of one mask is 0.06 grams, and 80 masks weigh 4.8 grams.
The market price of meltblown cloth, the main material used for masks, has risen from 18,000-19,000 yuan/ton in late 2019 to more than 29,000 yuan/ton currently. About one gram of meltblown cloth costs 0.029 yuan per gram. But it’s still hard to find.
The cost of melt-blown cloth for filtration accounts for about 17% of the total cost. The production cost of disposable medical masks accounts for the largest proportion, accounting for more than 59%, while brand building and production profit costs account for approximately 18% of the total cost. The factory production cost of masks is 0.17 yuan per gram.
PP polypropylene particles for the production of melt-blown cloth cost about 7,000 yuan per ton. 0.007 yuan per gram. The price of oil for producing PP polypropylene pellets has been falling again and again recently, with WTI crude oil priced at about US$53.50 per barrel.
The price of polypropylene particles at 0.007 yuan per gram becomes meltblown cloth at 0.029 yuan per gram. Appreciation: approximately 4.14 times. The factory changed from 0.029 grams of melt-blown cloth to 0.17 yuan per gram of masks, an appreciation of about 5.86 times. The value from middlemen to consumers has increased from 0.17 yuan per gram to 1 yuan per gram, an appreciation of approximately 5.88 times.
Polypropylene particles of 0.007 yuan per gram are turned into masks and sold to consumers for 1 yuan per gram, which is an appreciation of approximately 142 times. Even before the price increase, if calculated at half price, there would be a 70-fold appreciation. The proportion of workers' wages will not exceed 20%.
Item classification
N series: No time limit for protection against non-oily suspended particles.
R series: Protects against non-oily suspended particles and sweat-based suspended particles for eight hours.
P series: Protection against non-oily suspended particles and sweat-based oily suspended particles without time limit.
When some particulate matter carriers are oily, these substances attached to the electrostatic non-woven fabric will reduce the electrical properties and allow fine dust to penetrate. Therefore, the filter material to prevent oil-containing aerosols must undergo special processing. Electrostatic treatment to prevent fine dust. Therefore, each series is divided into 3 levels: 95%, 99%, 99.97% (referred to as 95, 99, 100), so there are 9 subcategories of filter media.