Filter paper is a general term for special filter media materials. If it is further subdivided, it contains: oil filter paper, beer filter paper, high temperature filter paper, and so on. Don't think that a small piece of paper seems to have no effect. In fact, the effect that filter paper can produce is sometimes irreplaceable by other things.
From the structure of paper, it is made of interwoven fibers. The fibers are staggered with each other to form many small holes, so the permeability to gas or liquid is good. Moreover, the thickness of the paper can be large or small, the shape is easy to process, and the folding and cutting are very convenient. At the same time, in terms of production cost, transportation and storage, the cost is relatively less.
Simply put, coffee filter paper can be used for separation, purification, concentration, decolorization, recovery, etc. This is very meaningful for environmental protection, human health, equipment maintenance, resource saving and so on.
Some of the raw materials used in filter paper are all plant fibers, such as chemical analysis filter paper; some are glass fibers, synthetic fibers, aluminum silicate fibers; some use plant fibers and add some other fibers, even including metal fibers. In addition to the above mixed fibers, some fillers, such as perlite, activated carbon, diatomaceous earth, wet strength agent, ion exchange resin, etc., should be added according to the formula. After a series of processes, the finished paper drawn from the paper machine is processed again as required: it can be sprayed, impregnated, or lined with other materials.
In addition, under some special conditions, the filter paper is also required to have higher temperature resistance, fire resistance and water resistance, as well as adsorption and mildew resistance. For example, the filtration of radioactive dust gases and the filtration of refined vegetable oils, etc.
Post time: Nov-14-2022