سیستم تولید ناب برای ساخت تورهای ماهیگیری با استفاده از اصول ناب و بهینه کردن شبیه سازی

• We follow the guidelines of designing future state VSM to a fishing net manufacturing system.• According to the guidelines five factors are selected for optimizing the system.• Using experimental design and a simulation optimizing tool, five factors are optimized.• Simulation results show that the new system can increase service level and reduce WIP.Value stream mapping (VSM) is a useful tool for describing the manufacturing state, especially for distinguishing between those activities that add value and those that do not. It can help in eliminating non-value activities and reducing the work in process (WIP) and thereby increase the service level. This research follows the guidelines for designing future state VSM. These guidelines consist of five factors which can be changed simply, without any investment. These five factors are (1) production unit; (2) pacemaker process; (3) number of batches; (4) production sequence; and (5) supermarket size. The five factors are applied to a fishing net manufacturing system. Using experimental design and a simulation optimizing tool, the five factors are optimized. The results show that the future state maps can increase service level and reduce WIP by at least 29.41% and 33.92% respectively. For the present study, the lean principles are innovatively adopted in solving a fishing net manufacturing system which is not a well-addressed problem in literature. In light of the promising empirical results, the proposed methodologies are also readily applicable to similar industries.