Mixing ratios obtained using screw disc and screw extruders, and selected properties of mixture of reglanulate and original material

摘要

Experimental effect of a screw disc clearance size on the homogenisation level and thenmechanical properties of extrudate obtained using the mixture of original low density polyethylenen(LDPE) and commercial LDPE recyclate were discussed in the present paper. For the purpose ofnexperiments a screw disc extruder was applied. Some tensile tests results and photographs of thenextrudate cross-sections obtained at different clearance settings were presented. The resultsnshow that the mixing in the conical screw disc zone was carried out more thoroughly than in anhelical channel of a single screw extruder. Plasticising in the disc zone of a screw disc extrudernmakes it possible to obtain extrudate with better properties than in the case of classical extrusion.