Study on new composite materials in engineering products with promising physical and mechanical properties has been considered as one of the fields of concern in recent decades. Strength, hardness and fatigue properties make engineering structural more flexible. They are extensively used in the aerospace industry, mechanical engineering applications and parts, electronic packaging, vehicle and aircraft structures, process industry equipment, as well as in biomedical equipment. Disposing of composite wastes however, are very difficult because of its structure and compositions. Hence, composite materials recycling has become one of the major measures of the future. This study seeks to analyse the present state of engineering plastics using natural fibers in their properties and manufacturing techniques. The effects of various chemical treatments on natural fibres’ mechanical and thermal properties have been studied in strengthening thermosetting and thermoplastics composites. The mix ratio of polymer waste used from the industry sector with natural fiber is expected to rise in the future, thus issues regarding recycling need to be tackled. It concluded that chemically treated natural fibre improved the adhesion between fibre surface and polymer matrix, which gradually increased the properties of natural fibres incorporated composites.

The paper is discussed the anticipation of the simulation software precision with the real moulding process by setting up the distinctive metering stroke separation. The Inventor CAD software was used to design the product experiment and perform the simulation by applying MoldFlow application to produce the processing parameter defining for the injection moulding machines. The results predicted by this filling simulation appears reasonable result as compared to the injected product. Prediction analysis given by the software is exceptionally valuable for the injection moulding parameter setting machines which can diminish the time of mould setup and can reduce the trial stage on the production line. The gating system is the most crucial part in injection moulding process and the limitation is to get the accurate filling time and injection pressure to ensure the cavity is fully filled before the material at the gate solidify. Gating system configurations are utilized to optimize the filling conditions of injection moulding parts. This important element was developed for achieving product quality. The utilize of simulation software is exceptionally supportive in the model designing stage to predict the quality and process capacity for the product. This paper presents the filling simulation of the side gate system to the injection moulding parameter.

Composites based on natural fiber reinforcement and recycled plastics blends has produced wide research and composites engineering interest in previous decades due to their high strength, small density, low cost, light in weight, recyclability and biodegradability as far as green technology is concerned. The tensile strength and water absorption were investigated at the different loading ratio. In this paper, wood dust, recycled Polyethylene Terephthalate, recycled Polyethylene (rPET/rPE) and SEBS-g-MA compatibilizer were processed with different wood dust loadings of 5, 10, and 15 wt %. In addition to molding process parameters such as the melt temperature and injection pressure will be considered which is influenced on part quality. From the observation it was indicates that the mechanical properties of tensile has increased with 15 wt % fiber whereas the water absorption also increased due to the hydrophilic nature of the filler.