Penerapan metode six sigma pada produksi sarung tenun Lamiri di PT Ibrahim Bin Manrapi

Melynda, Isaura (2026) Penerapan metode six sigma pada produksi sarung tenun Lamiri di PT Ibrahim Bin Manrapi. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Sarung merupakan produk tekstil tradisional Indonesia yang memiliki nilai budaya, estetika, dan religius, dengan permintaan yang bersifat berkelanjutan dan meningkat secara musiman, terutama menjelang bulan Ramadan dan Hari Raya Idulfitri. PT Ibrahim Bin Manrapi merupakan produsen sarung tenun premium bermerek Lamiri yang berlokasi di Kabupaten Gresik, Jawa Timur, dan memproduksi sarung berbahan sutra menggunakan Alat Tenun Bukan Mesin (ATBM). Kualitas bahan dan motif yang khas, dengan proses produksi yang mengandalkan keterampilan tenaga kerja manual, menimbulkan variasi proses dan produk cacat sehingga memengaruhi konsistensi mutu. Penelitian ini bertujuan untuk mengidentifikasi permasalahan kualitas, menentukan cacat dominan, mengukur kapabilitas proses produksi, serta menganalisis akar penyebab terjadinya cacat pada sarung tenun. Metode penelitian yang digunakan adalah Six Sigma dengan tahapan DMAIC (Define, Measure, Analyze, Improve, Control). Namun, penelitian ini dibatasi hingga tahap Improve karena tahap Control memerlukan waktu implementasi dan evaluasi jangka panjang. Teknik analisis data meliputi analisis SIPOC, diagram Pareto, peta kendali P, analisis kapabilitas proses, perhitungan Defect Per Million Opportunities (DPMO) dan tingkat sigma, diagram fishbone, serta Failure Mode and Effect Analysis (FMEA). Hasil penelitian menunjukkan bahwa proses produksi berada dalam kondisi terkendali setelah dilakukan perbaikan, namun nilai indeks kapabilitas proses sebesar 0,553 menunjukkan proses masih belum kapabel. Nilai sigma sebesar 3,16 mengindikasikan probabilitas produk bebas cacat sekitar 93%. Akar penyebab utama cacat berasal dari faktor tenaga kerja dan pengukuran, dengan risiko tertinggi pada proses pewarnaan motif. Penelitian ini diharapkan dapat membantu perusahaan dalam meningkatkan efektivitas pengendalian kualitas dan konsistensi mutu sarung tenun Lamiri.
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Sarongs are traditional Indonesian textile products that possess cultural, aesthetic, and religious value, with sustainable and seasonally increasing demand, especially ahead of Ramadan and Eid al-Fitr. PT Ibrahim Bin Manrapi is a manufacturer of premium woven sarongs under the Lamiri brand, located in Gresik Regency, East Java, producing silk sarongs using non-machine looms (ATBM). The quality of the materials and distinctive patterns, combined with a production process that relies on manual labor skills, leads to process variations and defective products, thereby affecting quality consistency. This study aims to identify quality problems, determine dominant defects, measure production process capability, and analyze the root causes of defects in woven sarongs. The research method used is Six Sigma with the DMAIC (Define, Measure, Analyze, Improve, Control) stages. However, this study is limited to the Improve stage, as the Control stage requires long-term implementation and evaluation. Data analysis techniques include SIPOC analysis, Pareto diagrams, P-charts, process capability analysis, Defects Per Million Opportunities (DPMO) and sigma level calculations, fishbone diagrams, and Failure Mode and Effect Analysis (FMEA). The results show that the production process is under control after improvements; however, the process capability index value of 0.553 indicates that the process is still not capable. The sigma value of 3.16 indicates a probability of defect-free products of approximately 93%. The main root causes of defects stem from labor and measurement factors, with the highest risk occurring in the motif dyeing process. This study is expected to help the company improve the effectiveness of quality control and the consistency of Lamiri woven sarong quality.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	DMAIC, Failure Mode and Effect Analysis (FMEA), Peta Kendali P, Sarung Tenun, Six Sigma, DMAIC, Failure Mode and Effect Analysis (FMEA), P-chart, Six Sigma, Woven Sarong
Subjects:	T Technology > TS Manufactures > TS156 Quality Control. QFD. Taguchi methods (Quality control)
Divisions:	Faculty of Vocational > 49501-Business Statistics
Depositing User:	Melynda Isaura
Date Deposited:	13 Feb 2026 02:16
Last Modified:	13 Feb 2026 02:16
URI:	http://repository.its.ac.id/id/eprint/132437

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