Wood plastic material production equipment of Dongguan Conna

Introduction to the characteristics of wood plastic material production equipment of Dongguan Connaught New Material Co., Ltd.

The extrusion process of wood plastic composite material is basically the same as that of plastic processing. The main equipments seem to be about the same, but they are very different in essence. At present, it can be used in extrusion molding of wood plastic composite materials, mainly double screw extruder and single screw extruder. Single screw extruders usually perform the task of conveying and plasticizing materials. However, the traditional single screw extruder limited in the extrusion of wood plastic composite materials, so the need for special design of screw, which has strong conveying materials and Plasticating ability, so as to achieve the complete mixing granulation process of material prior to extrusion.

Twin screw extruder depends on the principle of positive displacement to transport and process materials. It can be divided into parallel twin-screw extruder and conical twin-screw extruder. The parallel twin screw extruder can directly process wood powder or plant fiber, and the wood powder can be dried separately from the melt resin process. Conical twin-screw extruder and mixing type equipment than the cone type, screw feeding section of larger diameter, the materials can be continuously compressed, can shorten the residence time of the materials in the barrel, and the metering section of small diameter, shear of molten material is small, the processing of thermoplastic wood the material is a big advantage, so called low speed, low energy consumption of the "profile" type equipment.

In addition, the extrusion head and cooling system are also important parts of the quality of the extruded products. Due to the high amount of special plastic composite material and wood powder, the extruded material illiquid and difficult to cooling, conventional mold and equipment has been unable to meet the needs of the product, which makes the machine design in addition to ensure the smooth flow design and reasonable flow distribution, also need to die ability to build pressure and temperature control precision was considered, and the reasonable arrangement of head heating and cooling device, the cooling speed, the high precision, to ensure product quality and production purposes.

No matter what kind of processing method is adopted, the mold is indispensable for the manufacture of wpc. The thermal sensitivity of WPC based on plastic mold adopts the structure of a larger size generally to increase the heat capacity, the die temperature stability is enhanced; and the smaller size along the extrusion direction, to shorten the residence time of the material in the head. In addition to the reasonable shape and accuracy of the die, the surface treatment of the mold is also very important, especially in the extrusion process. Dongguan still new material Co., Ltd.