4-ply premium medical masks disposable medical face anti fog surgical mask medical shield mask

4-ply premium medical masks disposable medical face anti fog surgical mask medical shield mask
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In the current situation of epidemic prevention and control, the local supply of masks exceeds the demand. How many times can a common disposable mask be used? Jin Xiangyu, a researcher from the School of Textiles of Donghua University, said that in general, it was no problem to use disposable masks that met the standard for two or three times. He also clarified a series of other misconceptions about wearing masks. See Jiefang Daily · Shangguan News for details ↓
Such masks can be used for two to three times, "but it is not recommended to use them for n times".
Although the disposable masks commonly seen on the market are "disposable" in principle. However, Jin Xiangyu said that in most life scenes such as "non hospital", such masks can be used two to three times, "but it is not recommended to use them n times".
For example, take a walk in and out of the community. Under such use conditions, take off the mask when you go home, place it in a ventilated environment, dry it naturally or dry the water in the sun, and prevent the accumulation of surface bacteria, you can use it again. He reminded that disposable masks are not washable.
In fact, the superfine fiber material of disposable masks is "outer blue and inner white": the outer blue layer has water repellency, with lotus leaf effect; The white layer inside is water absorbing and "friendly" to the skin. Therefore, keep in mind that "the outside is blue and the inside is white", otherwise it will backfire and attract the droplets instead. Jin Xiangyu explained that this design is also for the practical needs of medical workers, because the blue surface is not white, and it is not easy to cause glare and reflection under high light conditions such as no shadow lamp, so as to reduce the eye fatigue of medical workers.