The objective of this Thesis is for study the case of the defect in Paint cans Manufacturing Process and finds the solution to reduce them. We have study the production process of assembly department in Teepakorn Industries Company Limited.
After gathered all information of defect, we found out that the assembly department have the most of defect. Then analysis of problems and causes happened with fishbone diagram, it was found that the defect as follows: 1) The paint cans have non-standard shape because the electrical system of welding machine that unstable. 2) The paint cans have dents side because the can seamers have a limit on usage; we need to adjust it always. 3) The handle of paint cans is to big size! Make it loose because the employees lack the quality of work.
According analysis of problems and causes happened, provides guidelines for solving problems that arise for 3 reasons: 1) From the Man by practical training to improve their ability and proficiency for work which will reduce the defect of product and it will reduce the workplace accident. 2) From the Machine by inspection machines every time before using, cleaning and maintenances regularly to increase the efficient of the machines and to make the machines work full capacity. 3) From the methods by study on process of work carefully and be careful to reduce the workplace accident and to cause the least amount of mistakes.