The quality of melt blown cloth mainly depends on the particle filtration and bacterial filtration efficiency. The specific filtration efficiency of melt blown cloth needs to be tested with a melt blown cloth testing instrument.
The specific process will not be introduced in detail, but I will probably talk about it.
The filtration test of melt blown cloth is to allow particles to penetrate through the melt blown cloth to see how much the melt blown cloth can The filtration test of melt blown cloth is to allow particles to penetrate through the melt blown cloth to see how much the melt blown cloth can stop. The particle penetration in the middle gives a penetration flow rate, which is L/min, that is, it passes through every minute. The larger the traffic, the faster the speed at the same time.
So the standard of 85 traffic is higher.
Our disposable medical masks, medical surgical masks are 32 flow detection to achieve 95% particle filtration efficiency. Generally, above N95, it may be required that the flow rate of 85 reaches 99% of the particle filtering effect.
So, how to deal with the scraps of meltblown cloth production, is there anyone to recycle it, and how to deal with the meltblown cloth products that do not meet the standard?
Unqualified melt blown cloth cannot be used, because unqualified melt blown cloth will inevitably not meet relevant requirements.
But this depends on what is unqualified. For example, if the N95 mask does not meet the standard, it can be downgraded and used, and it meets the requirements when used on medical surgical masks.
But if the basic protection level is not enough, it can only be destroyed or used for other purposes.
So why is the meltblown cloth not up to standard?
This should be investigated from three aspects: process, equipment or raw materials. For more information about melt blown filter cloth, please pay attention to Guide .
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