In the 1980s, seals were introduced to China. It has br […]
In the 1980s, seals were introduced to China. It has brought great convenience to people's lives. The production process of the sealing strip has been greatly developed. In the long-term accumulation, the sealing strip has been applied to various industries such as automobiles, doors and windows, home appliances, etc., and its composition and production process are also different according to different industries. Not the same. The development of various industries has driven the seals to varying degrees and provided essential materials for the development of various related industries.
The development history of sealing strips is closely related to the development of the door and window industry. The renewal of the two maintains an almost consistent rhythm, development and progress. As early as the 1990s, the popularity of large-scale aluminum alloy doors and windows in China brought about the era of sealed natural rubber strips. This kind of strip not only has low manufacturing cost, but also has low starting threshold, but because natural rubber strips will follow The use time is prolonged, and various fractures and hardenings occur. Subsequently, the state announced a ban on steel doors and windows, and natural rubber seals also faded out of the market. Since then, the country has begun to promote the use of PVC sealing strips. In the initial use, PVC sealing strips have indeed achieved high market value, but then there have been cases of tight sealing and due to the small workshop production method. Low-price competition has caused more and more inferior products to enter the market, and the vicious development has blocked the continued development of PVC seals.
With the use of EPDM strips, PVC seals have officially disappeared from people's sights. The new EPDM sealing strip has a smooth and beautiful surface, good elasticity and compression set resistance, weather resistance, ozone resistance, chemical resistance and a wide temperature range (-60~ 125 °C). EPDM sealing strips are used more widely in automobiles, doors and windows, cabinets, refrigerators, containers, and the like.
As we all know, our lives are inseparable from rubber and plastic products, such as door and window seals, rubber seals, automotive seals, gaskets, etc., which have always played an important role in our lives. However, some inferior products may even harm our health. Below we teach you how to distinguish the quality of the seal:
First, see if the surface of the product is pure and slightly colored.
Second, smell the taste of the product and have a fragrant taste.
Third, feel the touch of the product itself with a sense of touch is not smooth, there will be no rough situation.
Fourth, check the tensile strength. Under normal circumstances, the tensile strength will affect the tearing situation. In the case of low strength, burn it with fire and see how much remains in the final incineration.