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All Journal Jurnal Kalibrasi
Ani Ramadhani
Institut Teknologi Garut
Industrial & Manufacturing Engineering

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Pengendalian Kualitas Pada Produk Spons EPA Dengan Menggunakan Metode Statistical Process Control (SPC) : Studi kasus: CV. Mandala Logam Utama Dody Chandrahadinata; Ani Ramadhani
Jurnal Kalibrasi Vol 24 No 1 (2026): Jurnal Kalibrasi
Publisher : Institut Teknologi Garut

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33364/kalibrasi/v.24-1.2621

Abstract

CV. Mandala Logam Utama is a manufacturing company that produces EPA sponges made from synthetic rubber. During the production process, a high defect rate was found, averaging 12% per month, exceeding the company's tolerance limit of 10%, with the dominant type of defect being undeveloped sponges. This study aims to identify the types of defects and factors causing defects in EPA sponge products and to design quality improvement recommendations to minimize the defect rate in the EPA sponge manufacturing process. The analysis results show that the main causes originate from machine factors, particularly unstable hotpress temperatures and damage to the sil, with the highest RPN value of 694. Improvement recommendations include routine machine maintenance, temperature calibration, installation of electrical stabilizers, and the preparation of SOPs for machine operation and maintenance. After the improvements were implemented, a 7-day simulation was conducted, which showed a significant decrease in the defect rate to an average of 2.35%. This study proves that a structured quality control approach can improve the stability of the production process and the quality of EPA sponge products.
Co-Authors Dody Chandrahadinata