subject: How To Apply The Adhesive In The Filter - Filtration And Separation Industry - Double Flanged [print this page] The 70's, began to filter paper filter widely used in the automotive industry to promote filter adhesive industry has been rapidly developing. At present, filter adhesives used for more than the annual demand has reached 10,000 tons, adhesive quality of the good or bad, directly affect the device quality and filter life. As a professional manufacturer filter production, attention should be paid to the adhesive of choice, and according to the characteristics of adhesive bonding process to develop a reasonable, improve product quality, promote economic growth.
1, the choice of glue on the filter requirements
(1) Technical requirements: the work must meet the filter withstand the temperature, pressure, flow and design life; to meet the demand by bonding material, bonding a solid and reliable sealing.
(2) environmental protection: adhesive was non-toxic or low toxicity must not affect the production of the operator's health, the environment does not produce pollution.
(3) meet the requirements bonding process is simple.
2, application Our company uses the following several adhesive:
(1) air cleaner filter room temperature curing adhesive
Air filter bonding is the two-component polyurethane adhesive, its simplicity in operation, room temperature curing, non-toxic or toxicity, quick-drying. Use of climate and environment from the impact of A, B 2 components by 5:1 (mass ratio), after mixing, first in the inside cover of a sizing, glue around 10min after the standing insert paper core ; then glue the other end cap, stand for 30 ~ 45min after sizing, the paper core and insert one end of adhesive. After 4h at room temperature curing products can be tested packing. Qualified filter breaking strength, resistance to high and low temperature performance can meet the technical performance requirements. According to production experience, the filter bonding quality control of production from the following two aspects: a. sound quality assurance system to use adhesive manufacturers supply; b. Preparation of adhesive to strictly enforce the technical rules, while strengthening the bond site quality inspection, focusing on prevention of degumming, shrink plastic phenomenon.
(2) oil, diesel oil filter heat curing adhesive
My 80s in the 20th century the introduction of spin-filter production line, the filter production to achieve the mechanization and automation of production. Gluing machine production line with plastic injection and curing by the curing oven heated plastic filter. Gluing machine that can be used on the filter is a polyvinyl chloride plastic rubber thermal curing, single component, curing temperature is between 170 ~ 200 . Pay attention to controlling the production of plastic injection time, injection resin content and curing temperature, as possible mechanization and automation of production is proportional to the speed and quality requirements.
(3) Air Filters Glue With the mass production of cars, as a new type of adhesive plastic cover which is widely used in the filter. Glue is a polyurethane type, often called the PU adhesive. This kind of polyurethane foam filter paper-based adhesives can be replaced by self-forming end caps on steel end caps and rubber seals, together with the filter synthesis. Note progress with the injection mold plastic machine's filter reduced height, light beautiful, high filtration efficiency, long life, to become the main form of car air filter, also at the micro-cars, passenger vans and light trucks in widespread use.
Foam polyurethane adhesive has three components: A component (polyether, foam, etc.), B component (Liquefied MDI); C components (pigment). Three kinds of components by a certain percentage into the gluing machine injection into the mold, and then into the filter press process, guard. 10 ~ 20min after the stripping room temperature curing. This filter paper, the protective screen and PU adhesive becomes a whole structure.
(4) hot melt cartridge seam 20 the 90's, Santana 2000 by the slab air cleaner filter, filter cartridge cylinder area ratio increased more than 2 times. Filter plate with a solvent-free hot melt adhesive. Melted by heating coated with a gluing machine folded filter paper in between to connect. Plastic injection temperature can be in the range of 115 ~ 140 to choose, curing time is 20 ~ 25s (ambient temperature 20 ), suitable for mass production.
3 Conclusion
Recent years, the domestic filter adhesive research, development has been accomplished, but compared with the international adhesive manufacturers, there are still a big gap. From the market point of view, not many varieties, large differences in performance, can not meet the filter production. In addition, the existing adhesive quality stable, the market price is an important factor in the occupation. We, as professional manufacturer of domestic manufacturing of a filter, in close cooperation with hope and adhesive industry, research and development of inexpensive high-quality adhesives for many species the development of China's automobile industry.
