In the car filter,the enginering plastics can be used instead of metal parts ,like a leaf ring, diffusion cone, gasoline filter nylon shell, light cabin air filter shell, swirl tube, the central tube, in addition to the end cap, diversion tube, dust Plaster pan, dust pan, plastic mold, drain valve, bleed plug , plastic filter and so on.

Gasoline filter element is not easy to clean, poor recovery of the assembly, and thus more use of the overall paper gasoline filter. The original metal filter seal will be deformationafter soak in the gasoline, so that the metal shell charged, prone to spark, causing gasoline fire explosion, which is very dangerous. The integral paper petrol filter housing is complex in structure and has a wall thickness of only 2 mm. The upper and lower shells of the housing are not allowed to be bonded with glue. They can only be friction welded or ultrasonic welded and are required resistant to oil and Impact, but also a certain degree of rigidity, so the use of nylon 66 or the use of polysulfone.

 Nylon in the molten state has a high liquidity, so commonly used in this plastic injection thin-walled parts. It has low density, good flow characteristics, and has good noise damping, and good heat resistance, chemical resistance and mechanical properties. Whether the chemical, whether weak, alcohol, ketone, hydrocarbon or grease, does not have much impact on its performance. Complex shape of the overall paper petrol filter shell to enhance the use of nylon, the molding process is simple, low cost, more than the overall life after the replacement, greatly reducing costs and eliminating the waste of metal materials, with good economy efficiency and social benefits.