STRETCH FILM main raw material Situation

STRETCH FILM main raw material Situation

STRETCH FILM main raw material Situation
   For the production of stretch film of the polymer metallocene polyethylene (mPE), PE-LLD, PE-LD, EVA, PVC, in special cases, including polypropylene copolymer. Various proportions of these ingredients can be blended or coextruded to obtain the most desired film stretch film performance. PE-LLD because of its excellent tensile strength, elongation at break, resistance to shear and puncture resistance and welcomed by all sides. Most high-performance stretch film contains PE-LLD. Traditional PE-LD is the second commonly used resin, but the amount is limited. EVA has very good tensile properties, usually 3% vinyl acetate content of 12% of EVA. Compared with polyolefins, PVC stress remain poor, 16h after the retention of polyolefin is about 65%, while only 30% of PVC. China has now basically do not use PVC stretch films.

   At present, the main raw material for production of stretch films is PE-LLD, PE-LD, EVA and so on. PE-LLD domestic product mostly butene copolymer, can not meet the performance requirements of industrial stretch film, stretch film and can be used for the hexene or octene copolymer PE-LLD Compound, domestic enterprises can be produced very little. Tianjin United Chemical Co., Ltd. hexene copolymer product DFDA-9030 in November 2004 by the Tianjin Science and Technology Commission of the scientific and technological achievements, comprehensive technical performance has reached international advanced level, to fill the gap. In addition, the Qilu Petrochemical Co., Ltd. QLLF05 and Maoming Petrochemical Corporation 6080stretch film Compound (both hexene copolymer) is also a successful trial production, and a small amount of the market. Yangzi Petrochemical Co., Ltd., 7001 hexene copolymer products industry is still at the pilot production phase. More upscale octene copolymer products in China is still blank, metallocene product is still in development and testing stage. High-grade stretch film dedicated PE-LLD still rely heavily on imports. Major overseas suppliers: the United States DOW, EXXONMOBIL, PHILIPS, NOVA, Japan's Mitsui Chemicals, Japan, Idemitsu, Japan's Ministry of Kosan word, rattan and other big companies in Malaysia, China's annual import volume of about 30kt. PE-LD can supply domestic, major manufacturers have Daqing Petrochemical, Qilu Petrochemical, Shanghai Petrochemical, Yanshan Petrochemical, Maoming Petrochemical, Yangzi - BASF and other petrochemical companies; EVA domestic production is limited production in May 2005, the Yangtze - Bath husband's PE-LD device can be mass, due to price than PE-LLD and PE-LD is much higher, less domestic applications. Table 3 China's market for stretch film production part of the PE-LLD resin and its suppliers.
     China's petrochemical enterprises in the development of high-grade stretch film Compound Compared with foreign counterparts, there are still some gaps, production technology and efficient comonomer polymerization catalyst preparation is the key to the problem constraints. Domestic petrochemical enterprises should increase research and development at an early date for the domestic LLDPE stretch film processing enterprises to provide high-quality, high-grade resin material.