What is the difference between air purification dust filter cotton and PU sponge?
Information summary: There are many dust particles in the air that we can’t see, especially in the purification industry, many products are often scrapped because of this invisible dust.
There are many dust particles that we can’t see in the air, especially in the purification industry, many products are often scrapped because of this invisible dust. The finished product will be covered with particles, and the surface will be dull and uneven, resulting in product rework or serious scrapping. Then the filter cotton will play a very good role at this time.
Filter cotton is divided into three types in the air purification industry. One is non-woven filter cotton; the scientific name is polyester fiber filter cotton. It is characterized by loose fibrous tissue, high porosity, which increases the dirt holding capacity of impurities. It is a double-entrapping mode, which can effectively remove solid and soft particles. Larger particles and impurities are trapped on the fiber surface, while fine particles are captured. It is located in the deep layer of the filter material, so it has a high filtration efficiency.
The other: PU sponge mainly includes polyester and polyether type, which can be sliced or rolled, and can also be compounded according to customer requirements, hot pressing and blasting and hole processing. Because of its thermal insulation, heat insulation, sound absorption, shock absorption, flame retardant, anti-static, good air permeability and other characteristics, PU sponge is involved in various industries, including automobile industry, battery industry, cosmetics industry, bust underwear manufacturing and high-end furniture. manufacturing, etc.
The difference between the two is: non-woven fabrics have higher filtration efficiency and tighter density, and are generally used to filter impurities such as dust and particles, while PU sponge is softer and has a larger pore size, and is generally used by enterprises for shock resistance and resistance. burn. There is also a kind of cotton: activated carbon filter cotton, which will not be introduced here.
And it is also very important to choose a suitable air filter cotton company.