USULAN PERBAIKAN KUALITAS PRODUK COLOR CARD PADA PT MWA DENGAN METODOLOGI SIX SIGMA

• Main Author: Oktri Giovani, Reza
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/50256
• Institution: Institut Teknologi Bandung

PT Miltonia Warna Asia (PT MWA), established in 2019, is one of the first paint or color card catalog manufacturers in Indonesia. PT MWA has several clients who are paint companies to be made paint catalogs by PT MWA. In its operational activities, PT MWA has a problem that the number of defects generated is quite high. Production data for September 2019 to September 2019 January 2020 shows there are 17.12% defective products for Decolith Tinting color cards, 13.31% for Decolith Woodstain color cards, 13.86% for chips from Decolith Tinting products, and 1.41% for chips from Decolith Woodstain products. The high level of defective products costs the company 15% of production costs and 5% of the cost of purchasing raw materials. This makes PT MWA feel the need for improvement efforts to overcome the high defect of color card products. This research aims to improve the quality of color card products by reducing the number of defective products. This research uses six sigma methodology with DMAIC stage (define-measure-analyze-improve-control)) for color card products. The define stage is the stage to determine the research object, namely the color card product in the production department of PT MWA. In addition, this stage also identifies that there are 5 types of defects namely cracked chips, uneven glue, chipping misses, rough chip textures, and cracked chips. The measure stage is a stage to measure the existing conditions of process stability and capability, using a control map of p and then obtaining a sigma value of 2.56. At the analyze stage, factor determination and subfactor of the cause of the defect to be completed using delphi method, then subfactor prioritized using failure mode and effect analysis (FMEA) method with RPN value greater than 130. This stage results in 5 subfactors of defective causes that are a priority to resolve. The improve stage is the stage of formulating alternative solutions using 5W+1H to then be selected by the company. There are 7 accepted solution designs, namely 1) making a spray filter check sheet, 2) installing a visual display for sandpaper checking, 3) replacing a measuring glass into a special measuring glass, 4) proposing improvements to the screening checking procedure, 5) proposing the use of architect lamps to check screening results, 6) installing visual displays for polar machine settings, and 7) designing tools for polar machine settings. At the control stage, a timeline of implementation and improvement of SOP is carried out to support the solution implementation process.