Several New Technologies For Plastic Wood Composite
In recent years, the plastic wood composite material industry has made great progress in terms of technology and application fields. From the perspective of performance optimization and cost control, plastic wood composite materials have also evolved from the first generation products to the current second and third-generation products. At present, the latest research results of plastic wood composite materials mainly include co-extruded plastic wood products, embossed plastic-wood products and 3D printed plastic-wood products.
Co-extrusion wood products
Co-extrusion wood products are currently the leader of the second generation of wood plastic composite products. The application of co-extrusion decking technology has reduced the cost of plastic-wood composite products by a step under the condition of unchanged performance, opening up a new path for cost-saving second-generation plastic-wood products. There are more and more co-extruded plastic-wood products in the European and American markets, not only the traditional high-end plastic-wood doors and windows, handrails, and fences using plastic-wood co-extrusion, but also low-end floors, fences, exterior wall panels, and templates. With plastic-wood coextrusion, plastic-wood coextrusion products account for more than 50% of the total plastic-wood products. It can be said that plastic-wood coextrusion has become the mainstream trend of plastic-wood products. At present, plastic-wood co-extrusion materials mainly include PVC, PE and acrylonitrile-styrene-acrylonitrile plastic (ASA). Among them, the output of PE-type plastic-wood co-extrusion products is relatively large. At present, the domestic production of plastic-wood products mainly uses recycled materials, so the application of plastic-wood co-extrusion technology is more necessary and urgent, otherwise, it will soon be eliminated by the market. The base layer of co-extruded plastic wood products does not need to add anti-ageing agents, pigments and other materials, and the thickness of the co-extruded surface layer is very thin about 0.5mm, and the cost is reduced by more than 65%.
Embossed wood products
With the improvement of people’s quality of life, single-colour plastic wood cannot meet the aesthetic needs of customers. People have higher and higher spiritual requirements and are more inclined to things that are close to nature. In order to achieve the beauty, practicality, simulation and Plasticization and other requirements, embossed plastic wood products came into being. Embossed wood products tend to be more complex and retro. At present, the most widely used technology is deep embossing technology and online embossing technology. On-line embossing is commonly known as hot embossing, that is, embossing is performed before the temperature of the plastic-wood profile at the die mouth is not lowered, which largely retains the original pattern and increases the visibility and three-dimensional sense of the embossed plastic-wood product. This has enabled the plastic wood industry to develop and develop in the field of decoration.
Application of 3D printing technology in plastic wood products
3D printing combines a variety of high-end cutting-edge achievements such as digital simulation, material science and technology. 3D printing generally has applications in the fields of metallic materials, inorganic non-metallic materials, and polymer materials. But the most widely used in polymer materials. In the past two years, 3D printing has been introduced to the wood plastic industry by technicians. Solve the problems of single shape and color monotony of plastic wood products. The brightness and appearance color diversity of plastic wood products have been greatly improved.
Among the printing consumables, the printing difficulty of plastic wood consumables is very great. Because the main component of plastic wood material is wood fiber, wood fiber is easy to be carbonized after high temperature, and the carbonized fiber can easily cause the nozzle of the printer to block. Moreover, the plastic wood is fibrous, not pelletized, and the entanglement of fibers can easily cause plugging.
However, the print head of the printer can be redesigned. The diameter of the print head is expanded to 0.04mm, which can easily print on consumables such as plastic wood. The temperature of the printed plastic wood is set between 210-220 degrees. Of course, depending on the temperature setting, the fineness of the printed model texture is also different.
ketwords:
plastic wood composites
Co-extrusion wood products
Embossed wood products
3D printing technology
plastic wood consumables
