Effect of heat-sealing temperature on mechanical properties at heat-sealed parts in biodegradable plastic film

摘要

The heat-sealing machine is a vital tool in plastic bag manufacture. Processing conditions such as heat-sealing temperature and pressure greatly affect mechanical properties of the heat sealed part. In this study, the mechanical properties of the heat sealed part of a biodegradable plastic film were examined. Based on the results obtained from peeling test, circular notch tensile test and DSC measurement, the optimum heat sealing was established at 130-135℃. The mechanical properties of the heat seals decreased with increasing heat sealing temperature.