Manufacturing Lead Time Using the Value Stream Mapping (VSM) Approach in the Oyster Mushroom Baglog Production Process

Abstract

This research focuses on fulfilling demand by reducing the Manufacturing Lead Time (MLT) value at small and medium enterprises (SMEs) of Ungaran mushrooms, which produce baglog for growing oyster mushrooms. This research consists of several stages to optimize the production process for making baglogs in the Ungaran mushroom house, where there is a delay in meeting demand. The first stage of our method is value stream mapping (VSM). This method aims to map the entire process of making a baglog from start to finish. Based on the VSM results, the baglog material mixing process has processes that need improvement. After finding which processes need improvement, the second stage is brainstorming using a fishbone diagram to get the root of the problem in the mixing process. The next stage is looking for root cause analysis of issues in the mixing process. Based on the brainstorming and root cause analysis process, the design and mixing of baglog material tools were improved. Based on the results of the implementation of this tool, it was found that the baglog mixing process time decreased by 58.99 % and the MLT value for the entire baglog production process decreased from 1529,516 minutes to 1405,616 minutes, which is the same as the MLT decrease from 28 days to 26 days.