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All biodegradable bags are important materials

2021-08-27 10:54:43
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Wood plastic board material refers to a kind of material made of wood powder filled with anti-corrosion coating, that is, the composite material made of materials containing methylcellulose and generative materials, also known as wood powder / plastic composite material, wood fiber / plastic composite material and wood plastic composite material. Because the wood powder in wood plastic composites comes from common, high quality and low price, and can be recycled and degraded, the products have high compressive strength and low relative density, so they are a kind of green materials. Because wood plastic composites have a series of advantages, especially its green environmental protection, it has caused widespread concern in scientific research and academic circles all over the world, gradually achieved commercialization progress, and its application is becoming more and more common.

In addition to engineering and construction, it is also used in the automotive industry, warehousing, road transportation, agriculture and animal husbandry, as well as military and amusement park facilities. Wood plastic products have been produced in Europe and Japan as early as the 1970s. Some housing contractors use wood chips and mix them in hard PVC dry wrong materials at a rate of about 30% to produce PVC profiles with solid wood feeling. However, due to the serious damage of extruder screw and its low production efficiency, industrial production can not be completed.

In recent years, extruded wood plastic sheet materials have solved the above problems at the levels of raw material solution, method technology, extrusion forming machine and die shell, and further solved the problems of balanced mixing and vacuum distillation of raw materials, so that this technology and product have entered a period of commercialization.

Wood plastic composites have long been widely recognized outside, and a product production line in Europe has already begun to operate, which has improved the sales market progress of wood plastic products. In the application of new technology of wood plastic products, the amount of wood powder is above 50%. Therefore, wood powder has long been regarded as not only a filler, but also a raw material component.

Nowadays, some real estate developers of such materials feel that such materials, which have become the network hot spots all over the world, should be regarded as a kind of material. Materials with wood powder consumption below 60% can be called wood plastic products, while materials with wood powder consumption exceeding 70% should be called wooden furniture, because it is a kind of wood fused with epoxy resin. Therefore, the material with high wood powder composition has its original performance index and insufficient, so it can not be compared with PVC, PP and polyurethane foamed PVC materials with wood powder. Its key market competitive material is medium density fiberboard aluminum profile.

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