Electronic Theses and Dissertation

Industri Air Minum Dalam Kemasan (AMDK) dituntut untuk menjaga konsistensi kualitas produk guna memenuhi standar keamanan, kepuasan pelanggan, serta daya saing pasar. PT. Langini Jaya Group sebagai produsen AMDK merek Purified Langini masih menghadapi permasalahan kualitas pada produk kemasan cup 220 ml berupa kebocoran, deformasi cup, dan ketidaksempurnaan segel lid yang menyebabkan tingginya tingkat produk cacat. Data penelitian menggunakan data produksi dan cacat produk periode Januari hingga Desember 2024 dengan total produksi sebesar 2.611.344 cup dan tingkat cacat sebesar 3,01%. Penelitian ini bertujuan untuk menganalisis pengendalian kualitas serta merancang perbaikan kualitas produk menggunakan pendekatan Design for Six Sigma (DFSS) dengan metode DMADV (Define, Measure, Analyze, Design, Verify). Pada tahap Define dilakukan identifikasi proses menggunakan diagram SIPOC dan penentuan Critical to Quality (CTQ). Tahap Measure meliputi pembuatan peta kendali-p serta perhitungan Defects Per Million Opportunities (DPMO) dan level sigma untuk mengukur kinerja kualitas proses. Tahap Analyze dilakukan dengan menggunakan diagram Pareto, Tree Diagram, dan Design Failure Modes and Effect Analysis (DFMEA) untuk mengidentifikasi akar penyebab utama terjadinya cacat produk. Tahap Design menghasilkan usulan perbaikan proses melalui Process Decision Program Chart (PDPC) dan perancangan ulang desain kemasan cup berdasarkan nilai Risk Priority Number (RPN) tertinggi. Tahap Verify dilakukan menggunakan Pugh Analysis Matrix untuk mengevaluasi dan memilih desain terbaik. Hasil penelitian menunjukkan bahwa penerapan DFSS mampu memberikan usulan perbaikan desain kemasan yang berpotensi menurunkan tingkat kecacatan, meningkatkan nilai sigma, serta mendukung peningkatan kualitas produk secara berkelanjutan.

The bottled drinking water industry requires consistent product quality to meet safety standards, customer satisfaction, and market competitiveness. PT Langini Jaya Group, as a producer of bottled drinking water under the Purified Langini brand, still experiences quality problems in its 220 ml cup packaging products, including leakage, cup deformation, and imperfect lid sealing, which contribute to a high defect rate. This study uses production and defect data from January to December 2024, with a total production volume of 2,611,344 cups and an average defect rate of 3.01 percent. Based on these data, this research aims to analyze quality control performance and to design quality improvement proposals using the Design for Six Sigma approach through the DMADV methodology consisting of Define, Measure, Analyze, Design, and Verify stages. In the Define stage, the production process was identified using a SIPOC diagram and Critical to Quality characteristics were determined. The Measure stage involved the development of a p control chart and the calculation of Defects Per Million Opportunities and sigma levels to evaluate process performance. The Analyze stage applied Pareto analysis, Tree Diagrams, and Design Failure Modes and Effects Analysis to identify dominant defects and their root causes. The Design stage generated improvement proposals through the Process Decision Program Chart and a redesign of the cup packaging based on the highest Risk Priority Number values. Finally, the Verify stage employed the Pugh Analysis Matrix to evaluate and select the optimal design alternative. The results indicate that DFSS implementation provides effective packaging design improvements.