THE EFFECTS OF LINEAR LOW-DENSITY POLYETHYLENE (LLDPE) ON THE MECHANICAL PROPERTIES OF LOW-DENSITY POLYETHYLENE (LDPE) FILM BLENDS

Abstract

Plastic filed has become most usable in all industries plastic products vary depending on the machine used in production process. In film industry there are different type of material can be use , like HDPE, LDPE.LLDPE and PP HDPE is considered as the most important one , and PP is use rarely due long cooling cycle and it’s difficult to produce small thickness film it . The objective of the study is to improve LDPE by adding LLDPE because there is problem when using LDPE only. Like irregular thickness Across the film and instability in machine cause increase in defects and waste. In this study plastic film machine is used to mix the film grade LLDPE and LDPE, in contrast other research they used mixer , several test have been done ,MFI, Tensile, Tear, to determine the effect of LDPE properties on LLDPE . The result obtained from tests, LLDPE increase the elongation in the film bubble strength, and tensile strength in the film. However, there is reduce in MFI and Tear .and this an advantage since it help to control the film thickness.