Rail transit sealing strip development prospects

With the introduction of foreign Windows make technology in recent years, the cross section shape of domestic sealing strip and variety are also great changes have taken place, but because of the domestic mould making process, as well as the value of the sealing material as one of the doors and Windows accessories in China with the importance of insufficient, lead to products produced from the shape close to the shape of the design, use function still has some defects, such as matching parts clearance is bigger, finished product of the pressure and the amount of overlap quantity can not meet the relevant requirements, etc, so that in use process will inevitably appear some quality problems. The emergence of this phenomenon in addition to the affected by the above factors, a greater extent but also affected by the use of raw materials, such as material processability, inflation rate, etc. 

Epdm is a kind of comprehensive performance is very excellent sealing material, not only the excellent physical properties, and giant processing performance is very good, small expansion coefficient, this kind of material made of sealing strip and the design requirements of almost a huge difference, it is epdm was an important reason for developing rapidly in recent years.