Sheet plate production line is mainly used for hollow grid plate, PVC wood plastic sheets, PVC sheets, PVC corrugated sheet, PET sheet, HDPE drainage board, honeycomb panels, architectural panels, wide door plate, cupboard panels, decoration materials indoors or outdoors. materials of manufacturing.
Applications of this line include automotive industry, electronic industry, hardware, food and beverage, chemical plastics, pesticides, chemical pharmaceuticals, textiles and clothing, instruments, advertising, postal and other industries.
The advanced technology of sheet molding
By the use of the unique technological and engineering experience, We constantly develop and improve our advanced sheet extrusion line, It mainly reflects in the compounding of twin-screw, the technology and equipment of ectrusing molding directly, the technology of follow-up stretching and shaping, advanced control technology. [url=http://www.zhong-yun.com/en/index1.aspx]We are always committed to the design and manufacture of the most advanced sheet extrusion line[/url].
Extrusion Technology Introduction
Extrusion molding in plastics processing, also knowned as extrusion, It was called pressure out for the extrusion of using hydraulic pressure in the production of no rubber extruder. it s a processing method that when the material through extruder barrel and screw, it s heated and plastified, meanwhile it s pushed forward though the nose by the screw, then get a variety of products or semi-finished products. In the fibre chemical industry, extruder also can feed the spinneret materials to melt spinning. Extrusion is used for the machining of thermoplastics and rubber, it have the function of burdening, granulating, plastic filtering and so on, It can produce and manufacture various products such as pipes, profiles, sheet metal (or wood), film, the coating of wire and cable , rubber tire surface, tire tube, seal and so on, and give you a high production lines.
The extrusion system which is composition of the screw and barrel, is a key part of the extruder. It can make the materials plasticized, and squeeze out melt with quantitative, constant pressure and constant temperature.
Transmission system: To drive screw,to provid the moment and torque that is required. Heating and cooling system: to ensure the temperature of plastic and the extrution system meets the technological requirements in the forming process. The control system of plastic extrution machinery include heating system, cooling system and technology measurement system, It s mainly made up by the electrical equipment, instrumentation and implementing agencies (it s control panel and console). Its main role is the control and regulation of the main and auxiliary s drive motor, then output the speed and power which meet the technical requirements, and coordinate the main and auxiliary; Testing and regulating the temperature, pressure, flow of plastic in extruder , pressure, flow; to achieve the control of the entire unit or automatic control.
The electric control of extruter motor can be divided into two parts, temperature control and transmission system, It can realize the control of temperature, pressure, screw rotation, screw cooling, cylinder cooling, product cooling and diameter of the control, and traction speed, neat lines and the constant tension take-up control from an empty plate to full plate in the extrusion process.
Generally, according to the type of ploymer and the shape of semi-finished products, we can selecte extruder head and die, as well as the related appropriate assist device, then determine the extrusion process conditions, such as screw speed, the nose pressure, material temperature, the setting temperature, and the pulling speed. In the extrusion process, the material usually need refining, but the setting method is different. For example, the plastic often require cooling setting, and curing it, but the rubber semi-finished products need further vulcanization. Different extrusion equipment and techniques, you can get the different products.[url=http://www.zhong-yun.com/en/index1.aspx]http://www.zhong-yun.com/en/index1.aspx[/url]