Masks cover some people's mouth, nose and chin to form a medical mask(Nonwoven Face Mask Wholesale) and face sealed space, relying on human inhalation to force air to filter out harmful substances when passing through the mask to achieve the protective effect. With the continuous development of science and technology, the continuous improvement of people's living standards and the increasingly serious environmental pollution, human awareness of self-protection is also constantly strengthened, and the use of masks as non-woven masks(Disposable Face Mask Supplier) for protective products is particularly common. At present, the types of masks circulating in shopping malls are generally divided into air filter masks and air supply masks. Air filter masks are more commonly used, such as dust masks, haze masks, and medical protective masks. Types of masks(Medical Face Mask Manufacturer) have issued corresponding specifications to regulate mask stores. Most of the protective filter mask specifications implemented in China are mandatory product standards, and there are many test items. The air permeability of the fabric is the characteristic of the fabric itself, which has a great relationship with the fabric structure and the fabric combination method. Some of the first components of masks are textile fiber materials. Breathability is also a necessary characteristic of masks. The quality of the mask's breathability also determines to a certain extent the comfort, filtering power and other protective features of the mask. At present, there is no comparative inspection specification for the breathability test of masks, and the primary reference is the fabric breathability inspection method, such as GB / T 5453-1997 "Determination of Breathability of Textile Fabrics", ATM D737-1996 "Textile Breathability "Sexual Testing Methods" and ISO 9237-1995 "Determination of Breathability of Textile Fabrics".