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In recent years, the domestic market of doors and Windows sealing material, sealing strip of plasticized PVC material share of more than 90%, and is used by industry departments recommend the modification of high polymerization degree PVC and thermoplastic elastomer seal strip the market share is extremely low, most concentrated in the areas around Beijing.
Automotive sealing strip in our country in the 60 s by Beijing chemical industry research institute developed, but its application and development of only on Windows and doors in the mid - 90 - s were on the agenda, and in 2000 by the capital aerospace machinery company rubber plastic products factory research and development, in the same year by the ministry of construction experts in late acceptance, is now in the stage of mass production, but only some of the domestic manufacturers in the use of high-grade door window.
Domestic auto industry sealing strip ternary b compared with similar foreign products market price about 40% lower, but still slow development, the reason for this is that the user has not yet aware of the sealing strip making small proportion in the total cost in doors and Windows, just considering the cost savings, without considering the comprehensive benefits of premium quality sealing material. Automotive sealing strip cross section design and mould making process status = domestic plastic doors and Windows sealing strip because of the development of late, the original cross section shape is simple only for glass bead article seal using "K" form, window frame (fan) seal USES tablespoons of article and article gauze fan used by small "0", breed is relatively single.
Foreign sealing strip, on the other hand, with the development of plastic doors and Windows, its production has reached the standardization, scale, the design of each product section are accord with the requirement of related functions, and the corresponding profile match between almost close to perfect.