The automobile filter has a cylindrical shape with a pleated filter paper inside in order to have a larger filter surface in a certain volume. Another structure is composed of spirally wound crepe paper, which is mainly used for fuel oil filtration. The filter of this structure can be regarded as a special case, which is different from the most widely used pleated paper filter. Most filter papers are impregnated with resin, and the base paper has a great influence on the determination of filtration performance, while the resin imparts structural strength, so that the filter paper will not be damaged during the process of making the filter and under the final application conditions.
Paper is a web composed of cellulose fibers or other fibers, which is formed by copying from an aqueous suspension of these fibers. The choice of fiber is very important. The general rule is to obtain the best combination of physical properties (permeability, strength, thickness, etc., these indicators determine the filtration performance) at the lowest production cost.
Synthetic fiber-rayon is often used to obtain the high permeability of the paper. The polyester fiber is used to make the lubricating oil filter have high temperature resistance.
In the production of filter paper, the papermaking process is as follows: disperse the dry pulp into water, the general fiber concentration is about 6%; beating (that is, cutting and brooming the fibers): cutting the fibers to a length suitable for making a satisfactory paper, and exposing It can provide paper strength bonding points and reduce permeability. Dilution, followed by purification (removal of granular dust) and screening (removal of fiber bumps or clumps). Strength is the hydrogen bonding formed between the fibers in contact with each other during the drying process. There are many grades of paper, and the permeability generally increases as the tightness decreases. For automotive parts and parts machining, PTJ Shop offers the highest degree of OEM service with a basis of 10+ years experience serving the automotive industry. Our automotive precision shop and experts deliver confidence. We have perfected the art of producing large component volumes with complete JIT reliability, backed by the quality and long-term reliability our customers expect.
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