Pengendalian Kualitas Benang Plastik dengan Pendekatan Metode Statistical Process Control (Studi Kasus : PT. Perkebunan Nusantara XI-PK. Rosella Baru). (Controlling the Quality of Plastic Yarn with a Statistical Process Control Method Approach (Case Study: PT. Perkebunan Nusantara XI-PK. Rosella Baru)).

Ilham, Mohammad (2023) Pengendalian Kualitas Benang Plastik dengan Pendekatan Metode Statistical Process Control (Studi Kasus : PT. Perkebunan Nusantara XI-PK. Rosella Baru). (Controlling the Quality of Plastic Yarn with a Statistical Process Control Method Approach (Case Study: PT. Perkebunan Nusantara XI-PK. Rosella Baru)). Undergraduate thesis, Universitas 17 Agustus 1945 Surabaya.

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Abstract

PK. Rosella Baru is a manufacturing company operating in the plastic sack industry. In the production process of plastic sacks, there are several stages, including the production of plastic thread. During the production of plastic thread, the company still encounters defective products, such as damaged rolls, uneven rolls, slits, and thickness issues. The quality of the plastic sack packaging produced by PK. Rosella Baru is closely related to the quality of the plastic thread produced, as the main material for weaving the sack packaging is the plastic thread. The high number of defects in the plastic thread, exceeding 2%, hinders the company's production output. The research utilizes the Statistical Process Control method to identify solutions for quality control of the plastic thread products at PK. Rosella Baru. Based on the Pareto diagram, the most dominant defect is found in the unevenness of thread rolls, accounting for 43.3% of the defects. The control chart analysis shows that there are samples exceeding the upper control limit (UCL) in samples 1 and 9, and data exceeding the lower control limit (LCL) in samples 3 and 6. The cause and effect diagram identifies five factors: labor, machine, material, method, and environment. The most dominant cause is the lack of training for the workforce and insufficient maintenance of the machines, resulting in defective plastic thread. Therefore, the solutions suggested are regular machine maintenance, providing guidance or training to the workforce, and paying attention to machine settings and the quality of raw materials used. Keywords: Quality Control, Plastic Thread, Statistical Proces Control

Item Type:	Thesis (Undergraduate)
Uncontrolled Keywords:	Quality Control, Plastic Thread, Statistical Proces Control
Subjects:	T Technology > TS Manufactures
Divisions:	Fakultas Teknik > Program Studi Teknik Industri
Depositing User:	1411900136 Mohammad Ilham
Date Deposited:	09 Oct 2023 02:17
Last Modified:	09 Oct 2023 02:17
URI:	http://repository.untag-sby.ac.id/id/eprint/26808

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