Pramesti, Puteri Ardhya (2019) Metode Six Sigma untuk Mengurangi Defect Kertas Test Liner 150 GSM di PT. Mekabox International Mojokerto. Diploma thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Kardus digunakan oleh berbagai industri sebagai media kemasan produk sehingga kualitas kardus yang baik sangat diperlukan. PT. Mekabox International merupakan salah satu perusahaan yang memproduksi kertas karton sebagai bahan pembuatan kardus berdasarkan permintaan pelanggan. Kertas yang menjadi produk unggulan perusahaan adalah kertas Test Liner, terutama pada gramatur 150 GSM. Kertas Test Liner 150 GSM terjadi penurunan kualitas yang dimulai pada bulan September 2018 dengan defect rate sebesar 2%, bulan Oktober sebesar 4%, dan bulan November sebesar 5%. Jika penurunan kualitas tersebut dibiarkan terus-menerus mengakibatkan produk menjadi turun grade. Oleh karena itu perlu dilakukan peningkatan kualitas kertas dengan menurunkan jumlah defect yang dihasilkan menggunakan metode six sigma DMAIC (Define, Measure, Analyze, Improve, dan Control). Penelitian ini bertujuan untuk menentukan kapabilitas proses produksi, menentukan level sigma, mengetahui faktor penyebab tingginya produk Reject Masuk Gudang (RMG), dan membuat usulan perbaikan berdasarkan akar permasalahan sehingga diperoleh hasil kapabilitas proses produksi kertas Test Liner 150 GSM fase I dan fase II tidak kapabel, dengan level sigma pada fase I sebesar 3,06 dan mengalami penurunan level menjadi 2,77 pada fase II. Penurunan tersebut disebabkan banyak mesin yang kotor, seperti dryer dan wire top karena belum ada jadwal cleaning rutin. Selain itu, mesin cepat kotor karena operator juga tidak memenuhi SOP atau kurang pelatihan sehingga disarankan untuk melakukan kalibrasi mesin dan memberikan operator pelatihan manajemen mutu.
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Cardboard is used by various industries as a media for product packaging so that good quality cardboard is needed. PT. Mekabox International is one of the companies that produce paperboard as a cardboard making material based on customer demand. Paper which is the company's flagship product is the Test Liner paper, especially in the size of 150 GSM. The 150 GSM Test Liner paper has decreased in quality starting in September 2018 with 2% of defect rate, October has 4%, and November has 5%. If the decline in quality is allowed to continue, it causes the product to be down grade. Therefore it is necessary to improve the quality of paper by reducing the number of defects produced using the DMAIC (Define, Measure, Analyze, Improve, and Control) six sigma method. This study aims to determine the capability of the production process, determine the sigma level, determine the factors that cause Reject Masuk Gudang (RMG) products high, and make improvement proposals based on the root causes so the results are the capability of the production process of the 150 GSM Test Liner paper in Phase I and Phase II is not capable, with the sigma level in phase I is 3.06 and decreasing in level to 2.77 in phase II. The decrease was due to many dirty machines, such as dryers and wire tops because there were no routine cleaning schedules. In addition, the engine gets dirty quickly because the operator also does not meet SOPs or lacks training so it is advisable to calibrate the machine and provide operators with quality management training.
| Item Type: | Thesis (Diploma) |
|---|---|
| Additional Information: | RSSB 658.562 Pra m-1 2019 |
| Uncontrolled Keywords: | Defect, Six Sigma DMAIC, Test Liner 150 GSM |
| Subjects: | H Social Sciences > HA Statistics H Social Sciences > HA Statistics > HA29 Theory and method of social science statistics |
| Divisions: | Faculty of Vocational > 49501-Business Statistics |
| Depositing User: | Pramesti Puteri Ardhya |
| Date Deposited: | 31 Jan 2024 07:41 |
| Last Modified: | 31 Jan 2024 07:41 |
| URI: | http://repository.its.ac.id/id/eprint/64289 |
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