Flame Retardant Needle Punched Non Woven Fabric

Are non woven fabrics heat resistant?

    High temperature resistant non woven fabric is a high temperature resistant filter material woven with aromatic polyamide fiber imported equipment. The instantaneous temperature can reach 260 degrees, and the normal working temperature can reach 220 degrees. Generally used in occasions where the flue gas temperature is relatively high. Such as chemical industry, carbon black exhaust gas, ironworks blast furnace gas, cement plant shaft kiln exhaust gas, refractory brick kiln flue gas, coking flue gas, etc. Because the flue gas has a high temperature and contains sulfur components, only high - temperature needle felts can be used in these occasions.

    There are many ways to filter, and the materials used are also very wide. Filtering needle punched non woven fabric is one of the filter materials, which belongs to a kind of nonwoven fabric. Needle punched nonwoven felt are often used in some industrial sectors, such as electronics, food, oxygen production, medicine, etc., as well as the requirements of hotels in terms of air dust and hygiene, mainly to collect low - concentration dust particles. As a fabric medium, the needle punched nonwoven is often accompanied by high temperature.

    The high temperature resistance of the general needle punched non woven fabric can only reach about 120 ℃ -130 ℃. If it is operated for a long time beyond this range, its strength will be lost a lot, and it will shrink greatly, which will cause the size of the filter material to occur changes, which in turn affect the filtering effect. Therefore, if a higher temperature is required to continue, the function needs to be further improved on the original basis to form a high - temperature resistant filter fabric.

    The high temperature resistant  needle punched no woven fabrics generally can withstand high temperatures of about 50°C - 170°C, and can continue to operate. Compared with ordinary filter needle punched non woven fabrics, it has the characteristics of high breaking strength, low breaking elongation, low thermal shrinkage, moderate temperature resistance, and meeting the requirements of working temperature. The room temperature filter material cannot meet the needs but the high temperature filter material is too wasteful, which can reduce the operating cost to a large extent. Air filter media can be used in various industries. It is a degradable material. It is also characterized by environmental protection, hygiene and comfort, and its bearing capacity is relatively strong.

    1. The flame - retardant non woven fabric can withstand higher temperatures. Generally, a cigarette end will not form a hole when it touches any place.
    2. For other materials, their melting point is related to the material of the non woven fabric:
　　 (1) PE: 110-130℃
　　 (2) PP: 160-170℃
　　 (3) PET: 250-260℃