Defect In The Process Of Injection Moulding: Plastic Manufacturing Factory Issue And Solutions

Major problems faced by plastic manufacturing factory were high defective percentage in produced product. This study is carried out at a plastic manufacturing factory which carried out injection mould process located in Penang. Injection mould process is one process to generate various products based on plastic. In this study researchers would study those products called Finder Base as study material by obtaining defect data from the specific factory to study the process capacity of the creation by using capability process index (Cpk) and also predicting any defect in the month of November and December 2009. From analysis made, it has been discovered that Finder Base product?s manufacturing process is not capable in the manufacturing process because during 34th months of the product take out just nine month only index?s value Cpk ? 1. While defect forecast in the month of November and December 2009 method used moving average (MA) found defect number increasingly rise against previous months with 2850 defect unit forecasted in the month of November and 2815 defect unit in December 2009.