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Automotive sealing strip, the rapid development of automotive sealing strip of various performance put forward higher requirements. The development of science and technology, the application of new material, new technology, for the development of the sealing industry provides a space for development. Not only stay in the connectivity to the requirement of sealing strip, sealing and decorative function, the car of environmental protection, safe, comfortable and beautiful new requirements are put forward. This requires sealing strip from the choice of materials, improvement of the structure, the selection of manufacturing process on all needs to continue to improve.
(1) from the choice of material, not just stay on the application of EPDM. Thermoplastic elastomer of molding process is relatively simple: TPV (thermoplastic elastomer) vaporization, TPE (thermoplastic elastomer), TPO (thermoplastic olefin) in some aspects, such as a large number of applications. They have strong pigmentation and good compound and recyclability, at the same time also can meet the requirements of environmental protection. The physical properties of the thermoplastic elastomer are shown in table 1, its advantages are as follows: excellent flexible fatigue life; High temperature resistant; High impact strength; Low density; Excellent chemical resistance and weatherability; Good performance; High tearing and high abrasion resistance; Sex can staining. Renewable; Can with polyolefin injection molding and extrusion molding; Low tensile and compression permanent deformation.
(2) the structure improvement: the outer surface composite coordinated with auto interior various color materials, such as colored EPDM, color thermoplastic elastomer; The surface spraying wear and lubrication materials instead of flocking materials; Application of coating on the surface of the smooth, matte or four composite material with the color.
(3) process improvement: comprehensive microwave sulfurized high-speed hot air pre plastic + + + general hot air vulcanization process, greatly improving the sealing strip of sulfide surface quality and production efficiency; Cancel the original moulding process, the generation of secondary processing technology in a variety of injection molding, can not only improve the efficiency and improve the quality of the products; Online spraying process instead of the original manual spraying process.
Sealing strip, in short, automobile industry, with the constant improvement of the car class passenger car performance requirements of the sealing strip also increase accordingly. The rationality of the structure, design of human nature, streamline, automation of production process, product safety, environmental protection, recyclability, and beauty, as well as the diversity of form a complete set are sealing strip need to consider the important performance. This is in the coast of rubber to provide you with relevant data on automotive sealing strip, the hope can help you.