zhangxiaosan
Legenda soseske
Pridružen/-a: 27.09. 2016, 06:54
Prispevkov: 1069
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 Objavljeno: 13 Jan 2017 07:53 Naslov sporočila: The use of wood - plastic floor advantage |
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<p>Extrusion of wood-plastic composite materials processing methods on the surface and plastic processing methods are basically the same, the main equipment seems to be roughly the same, but in fact very different. At present can be used for wood-plastic composite material extrusion equipment mainly twin-screw extruder and single screw extruder. Single-screw extruder is usually complete the task of material transport and plasticization. However, the traditional single-screw extruder in the wood-plastic composite extrusion is subject to greater restrictions, so the need for special design of the screw, so that it has a strong raw material handling and mixing plasticizing capacity, so as to achieve squeeze Before the completion of the material mixing granulation process.</p>
<p>Twin-screw extruder rely on the principle of positive displacement transport and processing of materials, it can be divided into parallel twin-screw extruder and cone-type twin-screw extruder. Parallel twin-screw extruder can be directly processed wood powder or plant fiber, wood powder drying and melting resin process can be carried out separately. Conical twin-screw extruder and the "compounding" type of equipment than the cone-shaped screw feeding section of larger diameter, the material can be compressed continuously, can shorten the material in the barrel of the residence time, and metering segment diameter Small, small shear on the molten material, which for processing thermoplastic wood-plastic material is a big advantage, it is called low-speed, low-power "profile" type of equipment.</p>
<p>In addition, extrusion head and cooling system is also related to the quality of extruded products, an important component. Due to the special nature of wood-plastic composites and the high filling volume of wood powder, the extruding material is poor in activity and difficult to be cooled. The conventional mold and setting equipment can not meet the needs of the products, which makes the design of the head not only guarantee the flow channel design The smooth transition and fair distribution of the flow, but also on the head of the building pressure and temperature control accuracy of key considerations, and the rational arrangement of the head of the heating and cooling device, so that the cooling speed, high precision, to ensure product quality And yield the purpose. </p>
<p>eco composite wood perth<br />
hollow plastic deck boards<br />
4x8 wood exterior house panels</p> |
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