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The composite membrane makes various materials "strongly combined and complement each other," and therefore has the characteristics of high performance, low cost, cleanness and environmental protection, and has become a mainstream type of flexible packaging material. China's current multi-layer co-extruded plastic composite film blow molding equipment is mostly a two-to-three-layer co-extrusion rotary head form, and its technology is backward. In order to adapt to the production of plastic composite films with higher packaging requirements, a small number of enterprises with better economic strength have spent huge sums of money to introduce five to seven layers of coextruded plastic composite film blow molding equipment. However, the total output of these packaging plastic composite films is still insufficient. The market demand, a large number of five to seven layers of co-extruded plastic composite film still must rely on imports, more than five layers of co-extruded plastic composite film costs remain high, the use of multi-layer co-extruded plastic composite film is much lower than in Europe and the United States, To a great extent, it has inhibited the development of multilayer co-extruded plastic composite films in China. In order to reverse this passive situation, Guangdong Jinming Plastics Equipment Co., Ltd. introduced the key technology of Reifenhauser in Germany, rapidly increasing the level of its plastic machinery technology, narrowing the gap with foreign countries, and selling its products abroad, forming a country with China. Featured brand. The company jointly developed with Suzhou Industrial Park Sisu Packaging Materials Co., Ltd. and successfully commissioned the first 5-layer co-extruded plastic composite film blow-molding unit in China. The successful commissioning of this production line will greatly promote the development of multi-layer co-extruded plastic composite films in China, and end the import situation of multi-layer co-extruded plastic composite film blow molding equipment.
To develop multi-layer co-extruded plastic composite film blow molding equipment, which can replace special composite packaging materials such as dry compound, plastic film, and vacuum aluminum plating to produce special requirements, simplify the production process of packaging materials, save energy, and reduce plant Investing in human resources, reducing production costs, contributing to saving resources and controlling environmental pollution, reducing occupational disease patients, and avoiding the residual harmful substances (such as toluene and xylene) of dry compound adhesives and solvents from contaminating packaged goods and enhancing the export of goods The ability to compete and earn foreign exchange has prompted the upgrading of China's packaging materials technology.
Multi-layer co-extruded equipment in China should accelerate development
With the advancement of science and technology and the improvement of living standards, people pay more attention to the inherent quality of packaging materials, and gradually accept Europe's concept of packaging with intrinsic and light appearance, and begin to pursue high-quality, clean and pollution-free packaging. As a technology development hot spot in the flexible packaging industry in recent years, multi-layer co-extruded composite films have become the new darling of the market. The multi-layer co-extruded composite film is a variety of materials with different functions. The resin is melted and extruded through two or more extruders, respectively, through the respective flow channel in the die or in the die, and then inflated. , cooling compounded together. The multi-layer co-extrusion compounding process as a processing method of plastic composite film has been widely used in the world with its unique advantages. The composite film adopts a multi-layer co-extrusion compounding process to make the desired resin into a film with a minimum thickness, and the single film thickness can reach 2 to 3 μm, which can greatly reduce the use of expensive materials and reduce the cost of the material; The functional resin can be made into a multi-layer multi-functional composite film by only one processing step, which avoids multi-channel composite production processes and can reduce the production cost; the same polarity resin is bonded by the modified polyolefin, and the production process Non-pollution, finished product without solvent residue, is environmentally friendly packaging material; production of the same structure of the composite packaging material using the co-extrusion composite process than other composite processes can save 30% of the production cost.