STATISTICAL QUALITY CONTROL (SQC) PADA PROSES PRODUKSI PRODUK E DI PT DYN, TBK

This study discussed about the quality control of product E produced by PT DYN, Tbk., a plastic packaging manufacturer in Jatake, Banten. P map was used to map whether the product has been in the control limits or not. Pareto diagram was used in determining the biggest types of defects that occured in the product mapped. Causal diagram was used in determining the cause of defects in the product. For the purposes of the study, we collected data about the amount of production and the amount of defects of product E for three months as much as 45992. Based on the p map, there were seven data outside the control limits which were 9, 27, 30, 42, 43, 48 and 63. There were three biggest flaws obtained from Pareto diagram, i.e. black spots, rough body, and bram. The data was then analyzed using causal diagram. The results showed that the causes of the defects were: (1) human – less conscientious and less skilled ; (2) material – dirty raw materials, (3) methods – the work process did not follow the work standards, (4) machine – inappropriate settings, and (5) environment – dirty. Therefore, the company must make improvements to machinery, materials, methods, human and the environment to reduce products defects