The rapid development of plastic food plastic packaging packaging marketIn recent years , due to the global packaging industry to implement a combination of new initiatives , such as cross-border cooperation , especially in the world of food packaging plastic packaging industry has been greatly developed , new materials , new processes , new technologies, new products are emerging .Development of multifunctional composite filmLarge number of foreign development of multifunctional composite membranes to further refine its function , for example: the film can withstand cold -18 , -20 , -35 low temperature environment ; for PP film for moisture proof handle made ??of , its products can be divided into moisture, condensation , steam-proof , adjustable water and other types ; corrosion film can be packaged perishable , great acidity , sweetness great food ; friction membrane stacking stability ; special PE film corrosion ; moth film adds no smell insect repellent ; biaxially oriented nylon film to replace 66 heat -way stretch nylon 6 films packaged foods , can withstand high temperature of 140 ; cling film sealing, mildew , and no dew condensation phenomena ; regulating membrane absorbs water fruits release ethylene gas ; new special food packaging film can improve the aroma of food packaging ; high shielding films can protect the color, smell , taste, nutrition and taste quality indicators ; non- crystalline glass-like transparent nylon membrane stability ; protective film using a metal -modified LDPE film packaging liquid products , the heat-sealable at low temperatures .Development of modified copolymerCurrent European and American countries to invest in a large number of non-polar , polar ethylene copolymer , and to improve the tensile properties of co-extruded plastic film , and to improve transparency , to enhance stability , molecular weight distribution and plastic packaging design improved extrusion rheological properties. In contemporary injection process,In countries are plastic trays VLDPE ( very low density polyethylene ) substituted LLDPE, PP, EVA, PVC. In extrusion , injection molding, blow molding process , VLDPE the occupation of pharmaceutical, medical , cosmetic and other flexible packaging market, and the impact of food packaging .Experts believe that the contemporary world focuses on the development of the plastics industry bioplastics quickly modified , coated plastic products , plastic waste degradation and recycling of plastics . Some manufacturers in Europe and the United States have a linear ethylene - olefin copolymer and ethylene - vinyl acetate copolymer blend PA bags production , product packaging for ice cream, cream and other food . It plastic packaging box is particularly worth mentioning that, in the plastic packaging industry, notably the PEN ( polyethylene naphthalate glycol ) "new polyester" packaging materials. Since the PEN and molecular structure of PET (polyethylene terephthalate ) is similar , except that instead of benzene naphthalene ring , thus having more excellent than PET PEN barrier , gas barrier properties and especially UV resistance, good heat resistance ( ordinary amorphous PEN heat distortion temperature of 100 , whereas PET is only 70 ). With the industry's use of industrial means of production PEN, PEN will surely soon poured into the field of food packaging , packaging revolution triggered again after PET .Development of plastic metallocene ligand metallocene is an organometallic compound of a transition metal is connected to cyclopentadiene formed . I.e., metallocene polyolefin compound is a metallocene complex as a catalyst for olefin polymerization obtained by reaction of a polymer . Metallocene polymers have many advantages, such as good workability , high strength, high stiffness and good transparency , and thus people's attention , and thus introduced a number of new varieties. Metallocene plastics will have a direct impact on PP, MDPE, LLDPE, elastomers and other plastics market . Currently PE demand in the world market is 40 million tons , is expected to increase to 50 clear plastic packaging million tons by 2005 , mostly by increasing portion of metallocene polyethylene. Metallocene plastic has many advantages, such as gloss , high melt strength and good film stability, suitable for food packaging .Improved packaging containersToday introduced several new plastic technology abroad , the European launch of PVC transparent membrane instead of blow-molded hollow containers, can lose weight by 50% in the 5-9 layer co-extruded film process to make recycled plastic intermediate layer , can reduce costs slice thickness is controlled by the microprocessor feedback . Japan clamshell packaging launched PET and PC coextrusion process , not only heat resistance , impact resistance , stain resistance , chemical resistance were increased , while prices also declined . Standard set to shrink for PP foam glass , suitable for 90 pasteurized hot filling . UK launch of special PP resin injection blow bottle , can achieve light weight, high strength , uniform thickness, the purpose of the province of raw materials.Today popular abroad with plastic cups , composite cup ( outer PSP, inner PP, lid PS) pack of hot and cold beverages, liquor , convenience foods . France fructose with PE bottles , yogurt , plastic box design Germany with PC bottles of milk. Some countries are also working with PE or a mixture of soft plastic bucket with EVA to package beverages.Currently, a large number of foreign countries are supporting the development of standards and adapt to a variety of special -purpose plastic cover products. Such as the U.S. company Reynolds aluminum foil , paper , PE for bottle caps ; Europe instead of aluminum covered with shrink film cover ; Japan launched 280 high temperature resistant paint bottles and specifications of the CPI series with six paint foil cover for packaging lactic acid drinks.

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