Classification of Air Filter Cotton

Air filter cotton, as the name suggests, is a filtering material that can filter harmful substances such as dust, dirt, and particles in the air. In different situations, we need different levels of filtration, so we need to have a simple understanding of the classification of air filter cotton according to our own application needs.

According to the filtration level, air filter cotton can be divided into three types: primary filter cotton, intermediate filter cotton, and high-efficiency filter cotton.

Primary air filter cotton typically filters dust particles smaller than 5 microns and is used as a primary pre filter. So primary air filter cotton is mostly used in general places, at the air inlet of ventilation equipment. Its filtering level is not high, but often we only need this level.

Medium efficiency air filter cotton generally filters dust particles smaller than 1 micron, with moderate filtration grade. It is usually used as the second filtration after initial pre filtration for further filtration.

High efficiency air filter cotton generally filters dust particles smaller than 0.5 microns, with high filtration efficiency and good filtering effect.

The filtration principle of air filter cotton

Nowadays, with the increasing awareness of environmental protection and the continuous improvement of living environment quality, the application fields of air filter cotton are constantly expanding, and more and more air filters are being used. So what is the principle of using air filter cotton to achieve filtering effect? Let's introduce it from multiple perspectives below.

Air filter cotton accumulates dust in the air on solid surfaces, removes and disperses dust particles in the gas, and achieves the purpose of purification. The principle of air filtration belongs to physical filtration. Large particles have a large diameter and strong inertia, and cannot pass through the filter material when encountering obstacles. Small particles diffuse randomly, small molecules are bound together by force, and dust cannot pass through the filter material, thus achieving the filtering effect. Due to the effects of inertial collision, interception, static electricity, etc., dust particles floating in the air deposit on the material. The structure of the material is fibrous, honeycomb like, or a combination of both, collectively referred to as filter materials. Filter materials can not only effectively intercept dust particles, but also create greater resistance to airflow.

Application Fields and Market Demand Analysis of Air Filter Cotton

There are many downstream markets for filter cotton. In the field of electrical appliances, it can be used in air conditioning heat exchange systems to provide clean air to rooms and extend the service life of air conditioning; In the fields of automotive and mechanical manufacturing, it can be used for surface treatment, painting, and other aspects to prevent product defects caused by dust; In the field of precision instrument manufacturing, it can provide a highly clean and dye free production environment for precision electronics, optoelectronics, and other industries. In the field of biopharmaceuticals, it can prevent dust from interfering with drug efficacy; In the field of environmental protection, it can be used for flue gas treatment in industries such as coal and steel.

Air filter cotton plays an important role in ensuring clean air and providing a clean environment for factories and households, thus its market demand continues to grow. Driven by demand, the number of filter cotton production enterprises in China continues to increase, but currently the industry has a small number of large and medium-sized enterprises, a large number of small enterprises, insufficient investment in funds and talents, and weak overall competitiveness.

With the increasing market demand, the future R&The competitive advantage of cotton filter enterprises with strong innovation ability, high technological level, and excellent product quality will gradually emerge, and the development space of backward enterprises will gradually shrink.