The main characteristics of the cover seal
The seal is a new material developed in recent years based on the introduction of foreign technology and domestic independent research and development, mainly used for automotive door and window seals, in recent years for the construction of door and window seals. Its prominent advantages are:
1Performance and service life are equivalent to vulcanized EPDM seals.
2 Processing energy consumption is lower than that of vulcanized EPDM rubber (comparable to PVC).
3 does not contain heavy metals such as halogens and lead, plus a number of years can be recycled, in line with the requirements of green building materials.
4 The proportion is small (only 0.9-0.95) and the window rate is high. It seems that the purchase price is high and the actual use cost is low.
The price is relatively low, because the quality is different, the price is generally between 6,000 yuan 15,000 yuan / ton. Due to the use of waste materials, substitute plasticizers, and high filling amount, the low-end products have poor elasticity of the rubber strips, are hard to be hardened, have a smell of smell, and are easy to migrate to yellow the frame materials and have a short service life. A small number of door and window companies still competing in the low-level price competition are still using it. Medium and high-end PVC strips can meet standard specifications and have a relatively long service life.
Because PVC products contain halogens and the stabilizers contain heavy metals, they are not conducive to environmental protection. Therefore, developed countries and domestic cities in Beijing and coastal cities have eliminated or restricted the use of PVC strips.
1) Light weight, high tensile strength, and non-absorbent (instead of traditional three-oil four-felt, asphalt-used fir boards and other materials). Product environmental protection, construction is simple, anti-seepage, leak-proof, good water stop effect.
2) Corrosion resistance, aging resistance, high temperature resistance +80°C~-45°C, no flow, no deformation, no brittleness, long service life.
3) It has an independent open-cell structure. The appearance of the special joint plate is evenly distributed in honeycomb holes. It can be cemented with the cement/sealant without being roughened. It adapts to natural expansion and contraction changes, and strengthens the joints. Sealed expansion water stop effect.