Feasibility of Manufacturing Paper-plastic Laminates Using Waste Office Paper
摘要
This paper evaluates the feasibility of fabricating paper-plastic laminates (PPLs) as an alternative way to recycle paper. Unused and waste office papers were interleaved with virgin and recycled low-density polyethylene films 0.03, 0.06, and 0.09 mm thick to make 12 types of PPLs of various configurations. Further consolidation by hot pressing, cooling, and setting was used to produce PPLs with a target thickness of 3 mm, a compaction ratio of 1.17~1.23, a specific gravity of 0.93~1.05, and fiber loadings of around 48, 60, and 72%. Mechanical tests showed that the flexural strengths and moduli were between 456.6 and 712.0 kgf cm^(-2) (MOR(subscript b)), and 42,800 and 74,100 kgf cm^(-2) (MOE(subscript b)) respectively, tensile strengths were between 315.9 and 581.3 kgf cm^(-2), hardness ranged from 64.2 to 72.6 Shore D, absorption energy of the notched Izod impact bending tests were between 139.2 and 371.0 j m^(-1), and heat deflection temperatures fluctuated between 121.6 and 130.0℃. Values of the flexural strength, flexural stiffness, and tensile strength of PPLs prepared in this study were 1.5-times and the notched Izod impact strength was 5-times those of the extruded woodflour-plastic composites, indicating that PPLs might be a viable alternative way to recycle paper.