How do the sealing strips of auto parts be introduced to China?

At present, three EPDM (EPDM) or polyvinyl chloride (PVC) is widely used in the main materials of automobile parts sealing strips. Three EPDM (EPDM) is elastomer material by ethylene, propylene monomer adding non conjugated diene polymerization, which is characterized in that the molecular chain of the polymer are all saturated and branched into double bonds in unsaturated double bond, so it has excellent weather resistance, heat resistance, ozone resistance resistance, UV resistance, good processability and low compression set, is the preferred material for production of car seal, usually made of EPDM material production car seal service life of up to ten years.

PVC materials are more applied to the automobile sealing strips with high surface decoration requirements, such as the roof ornaments and the inside and outside sides of the windows. With the development of the automobile industry, more and more new materials can be used in the processing of automobile sealing strips. Among them, thermoplastic elastomer (TPE) is the most outstanding new type of environmental protection material. It is mainly divided into polyolefin (TPV, TPO), polyurethane (TPU), polyester (TPEE): polyvinyl chloride (TPVC), polyamide (TPAE) and other types of thermoplastic elastomers. TPV and TPO thermoplastic elastomers are mainly used in automotive seal products. These materials and glass have small friction coefficient and good wear resistance. They can be used as materials for automotive glass guide slot, door and window inner and outer sealing strips and some auxiliary sealing strips. In addition, more and more attention is paid to the environmental protection requirements in the auxiliary materials of various automobile seals, such as the application of various environmental adhesives and water-based coating materials.

In the 80s of the last century, auto parts sealing strips were introduced to China. It brings great convenience to people's life. The manufacturing process of the sealing strip has made great progress. In the long term accumulation, the seal strip has been applied to various industries, such as cars, doors and windows, household appliances, etc., and according to the requirements of different industries, its composition and production process are also different. The development of various industries in different degrees has led to the seal also provided the necessary materials for the development of all kinds of related industries.

The development of the sealing strip is closely related to the development of the door and window industry, and the renewal and replacement of both of them maintain almost the same rhythm, with the same development and progress. Early in the last century in 90s, Aluminum Alloy and the scope of our country has brought the era of popularization of natural rubber seal, this strip not only low manufacturing cost, manufacturing the initial threshold is low, but because of the natural rubber strip with the use of time, the occurrence of various faults, hard condition. Then the state announced the ban on steel doors and windows, and the natural glue seal also faded out of the market. Since then, the country began to promote the use of PVC material to seal in the initial process of using PVC, the seal has played very high market value, but then there have been sealed and lax, and as a result of small workshop production price competition makes more and more inferior products into the market, the development of malignant blocking the PVC seal to continue the development of the road.

With the use of EPDM glue strips, PVC seals are officially disappeared from the eyes of people. The new EPDM seal has smooth and beautiful surface. It has excellent elasticity and anti compression deformation, weathering resistance, ozone resistance, chemical resistance and wide temperature range (-60~ 125 C). EPDM seals are widely used in automobiles, doors and windows, cabinet, refrigerators, containers and so on.