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How to produce qualified meltblown cloth

How to produce qualified meltblown cloth

  • Clasificación:News
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  • Tiempo de emisión:2020-08-17 11:19
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[Descripción resumida]Mainly produces and sells three layers protective masks and KN95 products

How to produce qualified meltblown cloth

[Descripción resumida]Mainly produces and sells three layers protective masks and KN95 products

  • Clasificación:News
  • Autor:
  • Fuente:
  • Tiempo de emisión:2020-08-17 11:19
  • Visitas:
Detalles

Meltblown cloth as the core material of protective masks is known as the "heart" of masks. It has good filterability, shielding property, heat insulation and oil absorption, and is the key raw material for the production of KN95 (N95) masks. With the changes in market conditions, melt-blown fabrics under 90 now have no market at all. So how to produce qualified melt-blown cloth is the most concern of all melt-blown cloth manufacturers.

Generally speaking, it is not a difficult task to complete the equipment and meet the technical standards. It is not difficult for the melt-blown cloth to reach 95 filtration rate. Many people have a misunderstanding that the size of the machine is the quality of the machine. In fact, this is not the case. The quality of the machine is whether the machine can run stably and accurately, even if you are a 50 machine 55 machine, as long as your machine can run stably and accurately, You must also be able to produce 95- or even 99-level cloth.

The production of qualified melt-blown fabrics, the raw materials are the key step. Currently, most of the melt-blown fabrics are produced using polypropylene, and polypropylene has a wide range of types and different fat dissolution indexes. Generally speaking, the higher the melt index, the higher the MIF and the melt flow. The faster the speed, the more conducive to spinning. Therefore, in the selection of polypropylene melt-blown materials, polypropylene with a melting index ≥1500 must be selected. Generally speaking, the selection of domestic large-brand polypropylene will not have raw material problems.

Qingdao Zhongxin Huamei Polypropylene Meltblown Special Material A20551P4/M1500Z, self-contained electret masterbatch and compound modification additives, synthesized by one-step method. The "one-step method" makes the electret masterbatch uniformly dispersed in the PP, avoiding the situation of uneven dispersion of the electret masterbatch and unstable filtration effect caused by the customer's own stirring. The addition of compound modifiers further improves the fiber density and uniformity of the product, which is suitable for small machines and large machines.

The melt-blown cloth produced by the "one-step method" is soft, uniform and dense, with better electret effect and filtration efficiency ≥99%. Long-term filtration for more than 1 year, high charge retention rate and good stability. It effectively avoids problems such as uneven stirring and dispersion, unstable filtration efficiency and failure to reach 99% filtration rate.

It is worth noting that the lack of standards and huge profits are not the norm of the market after all. To make a meltblown cloth for masks that meets the national standards, it must meet the "eight good" --- good equipment hardware, good molds, good materials, good electret masterbatch, good static generator, good workshop temperature, The debugging master is good, and the storage conditions are good!

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