Extrusion and Evaluation of Saw Dust-Recovered HDPE Composite Bars
Wastes such as saw dust (Pinus Radiata) and milk bottles (High Density Polyethylene - HDPE) are available in abundance. HDPE bars and composite bars, consisting of different volume percentages (50%, 60% and 70%) of saw dust and recovered HDPE, were extruded using a co-rotating, conical, twin screw extruder with a slit-profile die and an innovative sizing-cooling box. The extruded bars were evaluated on their surface finish, shape conformance and materials distribution across the cross-section. Mechanical testing of the extruded bars was carried out using appropriate ASTM standards after they met the required quality ratings.
Yansheng Yin and Xin Wang
S. Lim et al., "Extrusion and Evaluation of Saw Dust-Recovered HDPE Composite Bars", Advanced Materials Research, Vols. 79-82, pp. 299-302, 2009