How to introduce sealing strip into China

At present, the main material of automobile sealing strip is generally ethylene propylene diene diene rubber (EPDM) or PVC. EPDM (EPDM) is composed of ethylene, propylene monomer to join a small amount of conjugated alkadiene polymerization of elastomer material, its structure characteristic is all on polymer molecular chain unsaturated double bond, and on the branched chain introduction of unsaturated double bond, and it has excellent weatherability, heat resistance, ozone resistance, resistance to uv linear and good processing performance and low compression permanent deformation, is the production material of choice for automotive sealing strip, generally USES the EPDM material production of automotive sealing strip service life can reach more than ten years. PVC material is more used in the surface decoration requirements of higher car sealing strip, such as roof trim, Windows inside and outside of the sealing strip. With the development of automobile industry, more and more new materials can be used in automobile seal strip processing and production. Thermoplastic elastomer (TPE) material is the most outstanding new type of environmental protection materials, which is mainly divided into polyolefins (TPV, TPO); Polyurethane (TPU); Polyester (TPEE) : Polyvinyl chloride (TPVC); Thermoplastic elastomers such as polyamides (TPAE). The main materials used in automobile sealing strip products are polyolefin (TPV, TPO) thermoplastic elastomer materials, which have low friction coefficient with glass and good wear resistance, and can be used as automobile glass guide slot, door glass inside and outside sealing strip and part of the auxiliary sealing strip. In addition, more and more attention is paid to environmental protection requirements in the auxiliary materials of various automobile sealing strips, such as the application of various environment-friendly adhesives and water-based coating materials.

Sealing strips were introduced to China in the 1980s. It has brought great convenience to people's life. The production technology of sealing strips has been developed greatly. In the long-term accumulation, sealing strips have been successively applied to various industries such as automobiles, doors and Windows, home appliances, etc., and their composition and production process are also different according to the different requirements of various industries. The development of various industries has driven the seal to varying degrees and also provided essential materials for the development of various related industries.

The development history of the sealing strip and the development of the door and window industry are very related. The upgrading of the two has maintained almost the same rhythm, with the development and progress. As early as last century 90 time, the aluminium alloy door window of our country wide range popularizes the natural rubber strip that brought seal era, this kind of rubber strip not only makes cost low, the threshold that makes starts low also, but as a result of natural rubber strip can be used as the extension of time, all sorts of break, harden wait for a condition to occur. Then the state announced a ban on steel doors and Windows, natural rubber sealant also disappeared from the market. Since then, countries began to promote the use of PVC material sealing strip, in use process, in the early PVC sealing strip do play a very high market value, but then again, untight seal and caused by mode of production of small workshops of low price competition makes more and more bad products into the market, the development of malignant blocking the PVC seal continued development path.

With the use of EPDM tape, PVC sealing tape has officially disappeared from sight. The new EPDM seal strip has a bright and clean surface, good elasticity and compression resistance, weathering resistance, ozone resistance, chemical resistance and wide temperature range (-60~ 125℃), etc. EPDM seals are widely used in cars, doors and Windows, cabinets, refrigerators, containers, etc.