The Use of LDPE FB3000

LDPE FB3000 is mainly used for transparent bag, film, car packaging, heavy bags, shrinkage filmDegree of low-density polyethylene polyethylene (LDPE) is a plastic material, it is suitable for a variety of molding thermoplastic molding process, forming good. LDPE mainly used for thin-film products, but also for the injection molding products, medical devices, pharmaceutical and food packaging materials, blow molding products.
Linear low density polyethylene (LLDPE), ethylene and a small amount of high-level α-olefins (such as butene, hexene, octene-1, four methyl pentene-1, etc.) in the catalyst, the high or low pressure polymerization of a copolymer, the density is 0.915 ~ 0.940 g / cc between. However, according to the ASTM D-1248-84 provisions, 0.926 ~ 0.940 g / cc density range is a medium density polyethylene (MDPE). A new generation of LLDPE density expanded to its plastic body (0.890 ~ ​​0.915 g / cc) and elastomers (<0.890 g / cc). But the U.S. Plastics Industry Association (SPI) and the U.S. Plastics Industry Council (APC) will only extend the scope of LLDPE plastic body, not including elastomers. The 1980s, Union Carbide and Dow Chemical Company to its early sales of plastic and elastomer called very low density polyethylene (VLDPE) and ultra low density polyethylene (ULDPE) resin. General molecular structure of LLDPE is characterized by its linear main chain, only a few or no long-chain branching, but contains some of the short branched-chain. No long-chain branching to higher crystallinity of the polymer. Typically, LLDPE resin density and melt index to characterize. Density of the polymer chain, the concentration of comonomer decision. Comonomer in the polymer concentration determines the amount of short branched-chain. Short chain length depends on the type of comonomer. The higher the concentration of comonomer, the lower the density of the resin. In addition, the average molecular weight of the resin melt index is reflected mainly by the reaction temperature (solution method) and adding chain transfer agent (gas phase) to decide. Independent of molecular weight and molecular weight distribution, which mainly affected by the catalyst type. LLDPE in the 1970s by the Union Carbide Corporation of industrialization, it represents a polyethylene catalyst and process technology a major change, to make polyethylene significantly expanded range of products. LLDPE with a complex catalyst instead of free radical initiator, and a lower cost of low-pressure gas to replace higher-cost high-pressure polymerization reactor, in a relatively short period of time, then its superior performance and lower cost, in many field has been replaced by LDPE. Currently LLDPE into almost all of the traditional polyethylene market, including film, molding, pipe and wire and cable. LLDPE products non-toxic, tasteless, odorless, milky white particles. Compared with LDPE high strength, toughness, rigidity, heat, cold, etc., also has good resistance to environmental stress cracking resistance, tear strength and other properties, and acid, alkali, organic solvent. In 2005, China’s LLDPE production is 188 million tons, accounting for 35.5% of total PE; consumption of 3.55 million tons, accounting for PE 33.8% of total consumption. The next 2 to 3 years, LLDPE consumption will remain around 8% rate of continued growth. According to the current market price of 12,000 yuan / ton, the market size of China’s LLDPE has more than 400 billion yuan.


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