The automotive filter has a cylindrical shape with a pleated filter paper inside so as to have a large filter surface in a certain volume. Another type of structure consists of spirally wound crepe paper that is primarily used for fuel filtration. This type of filter can be considered as a special case, unlike the most widely used pleated filter. Most filter papers are resin-impregnated. The base paper has a great influence on the determination of the filtration performance, while the resin gives the structural strength, so that the filter paper is not destroyed during the preparation of the filter and under the final application conditions. Paper is a web of cellulosic fibers or other fibers that are formed from the aqueous suspension of these fibers. The choice of fibers is important, and the general rule is to obtain the best combination of physical properties (transmittance, strength, thickness, etc., which determine the filtration performance) at the lowest production cost. Synthetic Fibers - Rayon is often used to achieve high permeability into paper, and polyester fibers are used to provide high temperature resistance to lubricating oil filters. In the production of filter paper, the papermaking process is as follows: the dry pulp is dispersed into water, and the general fiber concentration is about 6%; beating (that is, cutting and detangling the fiber): cutting the fiber to a length suitable for copying a satisfactory paper, and exposing Provides bond strength and reduced permeability for paper strength. Dilution followed by decontamination (removal of particulate dust) and screening (removal of fibrids or clumps). The strength is the hydrogen bonding formed between the fibers in the drying process. The grade of paper is extremely high, and the permeability generally increases as the tightness decreases. Long Span Roll Forming Machine
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August 24, 2021