A variety of methods can be used to prepare multi-component composite products, and the co-extrusion process is the simplest and most feasible method. It has become one of the most advanced plastic molding processing methods in modern times. The polymer co-extrusion process is a process in which several extruders are used to respectively supply different melt streams, and are combined and co-extruded in a composite die to obtain a multi-layer composite product. It can make multiple layers of materials with different characteristics compound with each other during the extrusion process, so that the product has the excellent characteristics of several different materials, and complements in the characteristics, so as to obtain the performance and appearance of special requirements, such as oxygen resistance. And moisture barrier ability, coloring property, heat preservation property, thermoforming and thermal bonding ability, and mechanical properties such as strength, stiffness and hardness. These multi-layer composite materials with comprehensive properties have extremely wide application value in many fields. In addition, it can greatly reduce product costs, simplify processes, and reduce equipment investment. The compounding process does not require solvents and does not produce three wastes. Therefore, co-extrusion technology is widely used in the production of composite films, plates, pipes, profiles, and wires and cables.
The following focuses on the composite pipe, composite film, flat film and cast film, PVC core foam composite pipe, board, and profile co-extrusion technology that have been widely used in recent years.
Composite pipe co-extrusion
The aluminum-plastic composite pipe integrates the advantages of plastic and metal. It has the advantages of non-toxic, smooth, corrosion-resistant, light texture, high strength, good heat resistance, low embrittlement temperature, easy installation, generous appearance, and long service life. It can be used It is used in the transportation of corrosive liquids and corrosive gases in cold and hot water and drinking water pipelines, ground and underground heating pipelines, gas pipelines, petrochemical industries, compressed air transportation, and the transportation of beverages, wine, milk and other liquids in the food industry. In the near future, it is possible to gradually replace galvanized pipes, copper pipes, and plastic pipes. In industrially developed countries, the share of aluminum-plastic composite pipes in pipes is about 15%. This technology was applied for a patent by British engineer Itzhak Barnoach in 1974, and then the Dutch Kitech Company, German Unicor Company and Krober Company improved the pipe structure, processing equipment and manufacturing technology to continuously improve its performance. Commercialized applications began in Europe and Australia in the early 1990s. my country began to introduce the technology of aluminum-plastic composite pipe production line in the mid-1990s, and began the production and application of aluminum-plastic composite pipe.
Main products cover T8 LED tube housing,LED batten fittings,LED tri-proof light fixtures,LEd linear light parts,LED panel aluminum frmae,and all kinds of PC,PMMA,plastic profiles,like round shape and other customized profiles,we are specilized in mold design.
Post time: May-28-2021