first filter paper start applied in ancient China, of course, for these purposes to use the usual stuff, but the principle was laid down.Currently, it produces only a few specialized companies.This is due to the fact that the filter paper, despite its apparent simplicity, is a product for the production of which involved a range of technologies.Except for the cellulose-based, it contains special fibers and chemicals, dyes, polimery.Bumaga filter is used to purify the oil, fuel and air flow in automobile engines, power units and engines for agricultural machinery.It applies filtering in gas turbines, industrial compressors, diesel railway vehicles.In addition, the Laboratory filter paper used for analyzes in the food industry (sugar, beer and wine, and), as well as in other industries.
This broad scope of the product is ensured by the unique properties of each of its kind, designed specifically for a particular purpose.Performance depends on the initial components and conditions for further use.Therefore, the task of technologists who are responsible for the production of this material, to ensure that the filter paper is consistent with physical, mechanical and chemical properties are often aggressive environments in which it will be applied.
its manufacturing process aims to make it a particular porous structure, which will provide a deep retention of extraneous inclusions of filtered gases and liquids.When this filter paper must have certain strength properties that give it an essentially uniform distribution of the fibers in the material and deep impregnating compositions based on polymeric binders.The technology of its production consists of three basic steps: the synthesis of the fiber composition, cooking basics, impregnated base paper binder polymer.
For the third step can be used a large number of components.However, most often used in modern industry styrene-acrylic copolymers (acrylic impregnation), phenol resin (phenol).At first there are a number of advantages.In particular, in the manufacture of paper impregnated with acrylic no additional processing step - heat treatment, such filters are also considered environmentally friendly, which is especially important in the treatment of air.The phenolic impregnation - it is the traditional way of producing the material for the automotive industry.This may be used two types of resins (resol or novolac) or mixtures thereof.A major advantage compared with novolac resole is minimal content of free phenol.
The filter paper can be installed after the embossing treatment, as well as in several layers which can be of various types.This increases the working surface, strength, range of types of the captured particles.
