The energy-saving essence of wood-plastic composite plastics is to use the wastes of natural wood processing (such as sawdust, wood powder, hemp fiber, fruit husk, rice bran, pulp, orange stem, bamboo powder, etc.) for ultra-fine surface treatment, and blend with synthetic resin. , The filling amount can be as high as 50%, the formed products can be sawed, planed and drilled, and the water absorption rate is low, the moisture is not deformed, it does not contain formaldehyde, and it meets the safety requirements of environmental protection and flame retardant. In the past, most of the wood chips, wood powder, and waste materials were burned, which not only wasted a lot of resources, but also caused environmental pollution. As an energy-saving, material-saving and environment-friendly material, wood-plastic composite has attracted widespread attention in the world, and there are many research results. In the past 10 years, North American wood-plastic composites have increased by 50% every year.       The development of wood-plastic composite plastics is more meaningful in my country, because in 2000, the demand for wood in my country was as high as 101.9 million m3, the supply was 63.9 million m3, and the gap was as high as 38 million m3.
Wood-plastic composite materials are mainly used in the construction industry (building decking), the automotive industry (door panels, rear shelves, ceilings, overhead boxes, protective panels, etc.), storage industry (pallets, pads, packaging boxes), transportation industry (Highway noise partitions, guardrails, silo partitions, railway sleepers), agriculture (shelves, troughs, buckets), facilities (floors, open-air tables and chairs, sheds, ladders, etc.). Taking pallets as an example, the domestic market demand is about 100 million, and more than 90% of them will be replaced by wood plastics. It is necessary to develop an emerging industry with an output of 10 million tons and a value of 60 billion yuan.
      However, there are many key technologies for the production of wood-plastic composite products: resin, wood powder manufacturing technology, wood powder drying technology, wood powder interface processing technology; single-screw or twin-screw pairing is required in injection molding, extrusion, and blow molding equipment. Wood flour has good dispersibility, wettability, mixing, shearing, exhausting, dehydrating, devolatilizing, and removing bubbles; plasticizing parts must be corrosion-resistant and wear-resistant; The function of precise control of the residence time of each part.
TPE rapid processing technology
      It is predicted that in the near future, injection molding processors will be able to significantly shorten the cycle time when processing SantopreneTM thermoplastic rubber by adopting a new technology. Using this technology can not only greatly reduce the cost of producing a single part, but also improve the processing capacity of injection molding. Combined with this advanced processing technology, a new line of SantopreneTM TPEs will soon appear with a new look, with processing speeds 25% higher than typical SantopreneTM rubber grades. These materials with improved formability can also significantly reduce production costs for injection moulding processors.
      According to reports, by putting this latest SantopreneTM rubber technology into the market, it can help processors save production costs and increase production capacity, which is more conducive to their business expansion. At the same time, this new rapid processing technology also further expands the economic boundaries of choosing SantopreneTM rubber to replace thermoset rubber.
      Other benefits of choosing SantopreneTM rubber over thermoset rubber include ease of processing, design flexibility, reliable part consistency, recyclability, and efficient use of scrap, both during production and beyond the life of the part .
This technology can also be used for injection molding, blow molding and extrusion. However, the types of production that would most benefit from this new technology, such as injection moulding, require longer cycle times.