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This new material and new technology to improve wind noise and lightweight is capturing the global automotive market

来源:CPRJ中国塑料橡胶 阅读量:10021 2020-01-07 09:08:13 Source: CPRJ China Plastics & Rubber Reads: 10021

[ Plastic Machinery Network Technology Innovation ] NVH refers to Noise, Vibration, and Harshness during driving. These are important technologies for maintaining the quietness of cars and performing inductive driving. Attention.
In order to reduce automobile wind noise in the core elements of NVH, Hecheng R & A independently developed the side profile extrusion technology, EPDMTPE Encapsulatuin technology, and TSD (Taped Sealing Door) technology. Some Korean and Overseas car brand companies are in use.
Hecheng R & A's products have simultaneously achieved two major effects of improving NVH performance and increasing production efficiency, not only entering the domestic market in Korea, but also in the international automotive market.
Variable cross-section extrusion technology strengthens the jointability of parts of the sealed weather strip. Compared with existing products, it improves the "watertightness" of waterproofing, the "sound insulation" of preventing noise, and the opening and closing of door opening and closing. In addition, during the manufacturing process, no additional joints or molding procedures are required. Simplified production processes.
In addition, the EPDM • TPE integrated hemming technology is a one-time molding and modular process for the small glass and rubber of automobiles. Because it can reduce wind noise and can create a clean and classy appearance, it has been mainly used in high-end cars overseas.
Since 2017, GM All New Cruze, Chevrolet Volando, Cadillac XT4, etc. have adopted this technology, and currently plan to apply it to more internationally renowned brands of cars.
TSD (Taped Sealing Door) technology is an engineering technology that has been used since 2017. It is a technology for assembling a sealing strip with tape during the process of assembling the sealing strip on the vehicle body. While improving NVH performance, companies that manufacture complete vehicles can also get rid of the manual assembly of clips in the past, but use robots to achieve unmanned assembly. This technology is currently used in Volkswagen B-SUV, Vietnam Automobile Factory (VN24).
In addition, in response to the trend of lightweight vehicles and eco-friendly vehicles, we are actively developing materials to reduce the weight of accessories. In the production of automobile body sides and glass guide grooves, EPDM and TPV materials produced by independent research and development of foaming technology, while improving performance, have also achieved the effect of reducing product weight.
Foamed EPDM technology can reduce the specific gravity from 1.27 to 0.8 while satisfying the performance of the car, reducing the weight of the finished body side by 20%. In addition, foamed TPV can reduce the existing specific gravity from 0.96 to 0.67 through high foaming unit control technology, which reduces the weight of the material by about 30%.
In addition, the technical strength of foaming is based on the core technologies of the subsidiaries and materials of the Hecheng Group. Foamed EPDM and TPV materials are not only used in Korean cars, but also in overseas famous car accessories and environmentally friendly cars.
Hecheng R & A is a global parts supplier that supplies automotive weatherstrips and liquid handling equipment to major international OEM companies. Headquartered in Yangsan, South Korea, Hecheng is a subsidiary of the Hecheng Group focusing on auto parts business. Twelve subsidiaries are operated not only in Korea but also overseas, and we have been working to develop overseas markets. The company mainly produces rubber weather strips for automotive weather strips, low-pressure hoses, high-pressure hoses, and air-conditioning hoses. The sales share of each product in the overseas market is showing an upward trend.

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