wood plastic composite making process

Processing considerations for wood-plastic composites - Green Dot ...When pellets are too large they have a tendency to melt unevenly, create additional friction and settle into a structurally inferior final product. The ideal pellet should be about the size of a small BB and rounded to achieve an ideal surface to volume ratio. These dimensions facilitate drying and help to ensure a smooth flow throughout the production process. Manufacturers working with wood-plastic composites should expect the same shape and uniformity they associate with traditional ...

Development of a Wood Plastic Composite Extruder - OMICS ...4 Sep 2017 ... extrusion and injection moulding. The extrusion process produces continuous linear profiles via forcing a melted thermoplastic through a die; on the other hand, the injection moulding process produces three- dimensional items with minimizing the stages of post-manufacturing. [9]. The manufacturing techniques adopted by Bengtsson and Oksman. [10] were based on drying wood flour at 100°C to reach a moisture content of 0.3%. The dried wood and plastic granules ...

Wood-Plastics Composites Done Right : Plastics Technology26 Apr 2012 ... wood-plastic composite (WPC) products were first widely marketed in the early 1990s as weather-resistant decking. The product concept ... Adding wood to plastic to make WPC reduces the formula cost, raises the modulus of elasticity, and lowers the coefficient of thermal expansion. These benefits come ... Counter- and co-rotating extruders can process wood fiber at moisture levels higher than 1% and 4% respectively, but at the expense of throughput. Reducing the ...

Wood-Plastic Composite Fabrication - Appropedia: The ...8 Sep 2011 ... 1 wood-plastic composites and Sustainability; 2 The WPC Material Compounding process. 2.1 Limitations. 3 WPC Forming processes. 3.1 Compression Molding; 3.2 Extrusion. 3.2.1 Single Screw Extrusion. 3.3 Injection Molding. 4 Improving Efficiency in ... Unfortunately, in order to make these products, companies have traditionally used non