Experts, 90% of the current wire and cable products on the market are made of PVC protective layer, the main reason is the PVC wire and cable material process is simple, mature, low cost, can produce different hardness products, the overall performance is better. However, PVC is not environmentally friendly. Many companies are still adding toxic substances (heavy metals such as lead, cadmium and chromium) and highly carcinogenic substances in the formulation process of producing PVC wire and cable materials. This phenomenon is especially noticeable in the underdeveloped countries. Plasticizers added in PVC production are mostly environmental hormones that affect the development and fertility. There is a lot of restrictive regulations on the use of PVC in the manufacturing materials for children's toys in Europe and the United States. PVC material production process as a serious non-green technology, so many developed countries in the world are no longer invest in PVC plants, the existing production capacity is also gradually reduced.
It is understood that TPE is a thermoplastic elastomer with both plastic and rubber properties. It is composed of a wide range of thermoplastic elastomers such as styrene-ethylene-butadiene-styrene block copolymer (SEBS) Propylene (PP) modified by the system. TPE has the characteristics of high elasticity, high strength, low density and easy processing. At the same time, it has good insulation, high and low temperature resistance, fatigue resistance, good feel and no peculiar smell