At present, the main data of melt blown cloth refers to the filtration rate of melt blown cloth, which is mainly divided into 80% particulate matter filtration rate (the following industrial melt blown cloth, the purpose of this melt blown cloth is mainly used for industrial purposes, such as filtration, warmth, isolation, etc. For industrial purposes, this material can also be used to produce dust masks for use in channels where particulate matter is diffused, such as logging plants, furniture factories, and flour mills.

Meltblown non woven fabric with a filtration rate of 80%-90% can be used to produce protective masks. This type of melt blown cloth has transitioned from industrial grade to civilian grade. Melt blown cloth in this filtering range generally only improves filtration efficiency. It does not have a protective effect on special scenes, such as the filtration of blood red blood cells, white blood cells and other molecules. At the same time, the filtration effect of oily particles is not very ideal.

The filtration rate of 90%-95% is the melt blown cloth used in the production of general protective masks on the market. This level of melt blown cloth is basically an entry-level material for civilian-grade melt blown cloth. The meltblown cloth with the filtration rate of this section gradually shows the filtering effect of oily substances, but it is still very low.

The filtration rate of 95%-98% is the melt blown cloth used in the production of KN95 protective masks on the market. This level of melt blown cloth is basically the intermediate material of civilian grade melt blown cloth. The filtering effect of melt blown cloth for oily substances in this stage of filtration rate is gradually enhanced. Among them, the high weight of melt blown cloth for oily substances and European standard FFP1, FFP2 can already be achieved, but due to the problem of product quality 95 melt blown cloth filtration If the effect is completely in accordance with European standards, it will not be achieved, because the filtration of oily particles cannot achieve a 95% barrier effect.

The filtration rate of 99% is the melt blown cloth used in the production of high-quality export-type KN95 protective masks on the market. This level of melt blown cloth is basically the advanced material of civilian grade melt blown cloth. The melt blown cloth with this filtration rate can achieve the filtering effect of oily materials and the European standard FFP1 and FFP2, and the filtering effect of oily particles can reach 95%. At the same time, this grade of meltblown cloth can achieve a hemodialysis rate of more than 30%.

The filtration rate above 99.5% is the high-quality export-type KN95 protective masks and the melt blown cloth used in the medical surgical masks currently on the market. This level of melt blown cloth is basically the high-end material of medical grade melt blown cloth. The filtering effect of melt blown cloth for oily substances in this section can be achieved for oily substances and European standard FFP1, FFP2, and even FFP3 can be achieved. The most important indicator is that the filtering effect for oily particles can reach more than 99%.

Weight of meltblown cloth

On the one hand, the weight of melt blown cloth can be regarded as the quality or quality of melt blown cloth, but the quality here cannot be expressed simply by weight.

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