APPLICATION OF LEAN CONCEPT TO IMPROVE PRPDUCTION PROCESS IN CHEMICAL MANUFACTURING COMPANY FOR ELECTRONIC INDUSTRY

Abstract

       The objectives of this research were to study the production process and problems arising in the production process of the current soldering chemical factory and to propose a method to increase efficiency and productivity and reduce waiting time by lean manufacturing concept in a soldering chemical factory. This research applied the concept of Lean and production balancing. To solve the problem of low production line efficiency, the ECRS principle was used to reduce waste in production. A fishbone was used in the analysis of problems in the production process for eliminating activities that did not add value to the production of soldering chemicals after planning the operation and defining a new standard operating procedure. The research findings showed that Production line efficiency increased to 98.04 %. Production cycle time from 467 minutes per lot decreased to 407 minutes per lot, representing 81.1 5%. Forward daily production volume increased from 700 kg to 1000 kg, causing the cost of labor from 3.93 baht per kilogram to be reduced to 2.78 baht per kilogram. This was a result of the number of OT hours being reduced from 112 hours per person to 30 hours per person.