Increasing the Productivity of Fiber Coating Line in Cable Production by Eliminating Waste in Material Flow Using DMAIC Lean Six Sigma Tools and Minitab Application

In this paper, the author will point out the application of Lean Six Sigma tools in order to increase the productivity of the sheathing line in cable production. The previous analysis determined that auxiliary times when changing tools on extruders and replacing inputs and outputs are too large. The problem includes all items, i.e. all product changes on the fibercoating line in cable production. This LSS project follows DMAIC stages and application of following techniques: Project charter, SIPOC, CTQ, VSM, Ishikawa diagram, Cause and Effect Matrix, Histograms, Pareto analysis and SPC are applied. In order to eliminate waste in flow material process, the process capability analysis for changing tools on extruder No.2 is done. This article is the result of several years of author’s work in the field Lean Six Sigma project implemented in working conditions of manufacturing oriented companies. This article provides proposal a set of approaches that are the basis for the development and application of the Minitab as statistical tool for Lean Six Sigma approach.