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Abstract Corrugated carton boxes as a storage for products is common use in industry nowadays, corrugated carton box has many advantages, hardiness, air resistance, more neat and strong. To produce this corrugated box, it needed a frame to support the edge of the carton to make it stronger. This study was conducted at one of the pp corrugated manufacturers in Indonesia. The company oftenly receive complaints caused of quality problems of the frame. Research aimed to provide quality improvement using DMAIC (defining-measuring-analyzing-improving-control) as analysis method. The results of study concluded that the causes of defect consist of several factors, human factors, poorly trained of machine operators. The second cause is the engine factor, the barrel screw used has an incorrect temperature and rotation speed of the screw is inappropriate. The third cause is the material factor, dirty materials that was entered the machine affected the size of materials produced. Improvements carried out using design of experiment and standard operation procedures.
Tannady et al. (Mon,) studied this question.