Statistical Quality Control of Plastic Spoon Production Process at PT XYZ Using Laney Demerit Control Chart and Analytical Hierarchy Process-Integrated Statistical Process Control

Solikhin, Muhammad Fauzan (2023) Statistical Quality Control of Plastic Spoon Production Process at PT XYZ Using Laney Demerit Control Chart and Analytical Hierarchy Process-Integrated Statistical Process Control. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

The industrial sector is one of the crucial sectors in the development and economic growth in Indonesia. One of the industries that has progressed along with the times is the plastics industry. In general, the plastic manufacturing process is divided into four types, namely injection molding, extrusion, thermoforming, and blow molding. PT XYZ is one of the companies that operates the plastic production process using injection molding machines. In the implementation of production using this injection molding machine, it is common to find the product defects. It is very likely that the product defect will become plastic waste. One of the causes of environmental damage today is the disposal of plastic waste, because it takes a long time to destroy naturally. Therefore, it is necessary to control the statistical quality of plastic production process in order to fulfill customer satisfaction and also maintain product quality in accordance with the provisions. In this research, statistical quality control will be carried out using u control chart, demerit control chart, AHP-based demerit control chart, Laney u control chart, Laney demerit control chart, and AHP-based Laney demerit control chart. The results of the u control chart, demerit control chart, and AHP-based demerit control chart show that the plastic spoon production process at PT XYZ was not statistically controlled and further analysis was needed using the Laney control chart. After the analysis, the results of the Laney u, Laney demerit, and AHP-based Laney demerit control charts show that the plastic spoon production process at PT XYZ in phase I has been statistically controlled after being handle because of the out of control observation points. In phase II, it was obtained that the plastic spoon production process at PT XYZ was not statistically controlled. Meanwhile, the process capability analysis shows that the production process is not capable.
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Sektor industri merupakan salah satu sektor krusial dalam perkembangan dan pembangunan ekonomi di Indonesia. Salah satu industri yang mengalami kemajuan seiring dengan perkembangan zaman adalah industri plastik. Secara umum, proses pembuatan plastik dibagi ke dalam empat jenis, yaitu injection molding, ekstrusi, thermoforming, dan blow molding. PT XYZ merupakan salah satu perusahan yang mengoperasikan proses produksi plastik dengan menggunakan mesin injection molding. Dalam pelaksanaan produksi menggunakan mesin injection molding ini, tidak jarang ditemukannya produk defect. Sangat mungkin terjadi jika produk defect tersebut menjadi sampah plastik. Salah satu penyebab rusaknya lingkungan hidup saat ini adalah pembuangan limbah sampah plastik karena plastik memerlukan waktu yang cukup lama untuk membuat hancur secara alami. Oleh karena itu, perlu dilakukan pengendalian kualitas statistik dalam upaya pemenuhan kepuasan customer dan juga menjaga kualitas produk sesuai dengan ketentuan. Dalam penelitian ini, akan dilakukan pengendalian kualitas statistik dengan menggunakan peta kendali u, peta kendali demerit, peta kendali demerit bebasis AHP, peta kendali Laney u, Laney demerit, Laney demerit berbasis AHP. Hasil peta kendali u, peta kendali demerit, peta kendali demerit berbabis AHP menunjukkan bahwa proses produksi sendok plastik di PT XYZ tidak terkendali secara statistik dan perlu dilakukannya analisis lanjutan dengan menggunakan peta kendali Laney. Setelah dilakukannya analisis, hasil peta kendali Laney u, Laney demerit dan Laney demerit berbasis AHP menunjukkan bahwa proses produksi sendok plastik di PT XYZ pada fase I telah terkendali secara statistik setelah diatasi karena adanya titik pengamatan yang out of control. Pada fase II didapatkan bahwa proses produksi sendok plastik di PT XYZ tidak terkendali secara statistik. Sementara itu, analisis kapabilitas proses menunjukkan bahwa proses produksi tidak kapabel.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Analytical Hierarchy Process, Laney Control Chart, Statistical Quality Control, Plastic, Analytical Hierarchy Process, Peta Kendali Laney, Pengendalian Kualitas Statistik, Plastik
Subjects:	H Social Sciences > HD Industries. Land use. Labor > HD9980.5 Service industries--Quality control. Q Science Q Science > Q Science (General)
Divisions:	Faculty of Science and Data Analytics (SCIENTICS) > Statistics > 49201-(S1) Undergraduate Thesis
Depositing User:	Muhammad Fauzan Solikhin
Date Deposited:	14 Aug 2023 02:58
Last Modified:	14 Aug 2023 02:58
URI:	http://repository.its.ac.id/id/eprint/104386

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