Elastic Ear Ropes and Ear Straps Made of Non-woven Fabric, Used for the Ear Straps of Fully Automatic Integrated Mask Machines
The dust - blocking efficiency of non - woven fabric masks is measured by their blocking efficiency against fine dust, especially respirable dust below 5 microns. This is because dust of this particle size can directly enter the alveoli and affect human health. For ordinary gauze masks, the dust - blocking principle is mechanical filtration. That is, when dust collides with the gauze, after layer - upon - layer of blocking, some large - particle dust is blocked in the gauze. However, some fine dust, especially dust smaller than 5 microns, will pass through the meshes of the gauze and enter the respiratory system. Currently, there are some dust - proof masks abroad whose filter materials are composed of fibers charged with permanent static electricity. During the process of respirable dust smaller than 5 microns passing through this kind of filter material, they are attracted by the static electricity and adsorbed on the filter material, thus truly playing a role in blocking dust.
Air is like water flow, flowing first to the place with less resistance. When the shape of the non - woven fabric mask does not fit closely with the human face, dangerous substances in the air will still leak in through the non - fitting parts and enter the human respiratory tract. Then, even if you choose a mask with the best filter material, your health cannot be guaranteed. Many foreign regulations and standards stipulate that workers should regularly conduct fit - testing on non - woven fabric masks. The purpose is to ensure that workers choose non - woven fabric masks of appropriate sizes and wear them in the correct steps.
It is required that the breathing resistance should be small, the weight should be light, the wearing should be hygienic, and the maintenance should be convenient. In this way, workers will be willing to wear the masks consistently in the workplace and improve their work efficiency. Currently, the maintenance - free masks abroad do not need to be cleaned or have parts replaced. They are discarded when the dust - blocking capacity is saturated or the mask is damaged. This not only ensures the hygiene of the non - woven fabric mask but also saves the workers' time and energy in mask maintenance. Moreover, many masks are in an arch shape, which can ensure a good fit with the human face shape and also leave a certain space inside the mask, making it comfortable to wear.
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