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Journal : OPERATION EXCELLENCE: Journal of Applied Industrial Engineering

Quality Improvement of NH1X36B Pre-Printed Box with QM-CRISP DM Approach at PT X Anik Nur Habyba; Rina Fitriana; Tania Theodora
Operations Excellence: Journal of Applied Industrial Engineering Vol 13, No 3, (2021): OE November 2021
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/oe.2021.v13.i3.028

Abstract

PT X is a manufacturer of cardboard box whose products are indispensable for various fields. The problem identified in NH1X36B pre-printed box, which is a shoes box, is the high defect rate that exceed company target of 2%. This study aims to reduce the defect rate of the product. The Quality-Management (QM) and Cross Industry Standard Process for Data Mining (CRISP-DM) approach was conducted by integrating Six Sigma and data mining. The Business Understanding phase was intended to define business and data mining objectives, SIPOC (Supplier-Input-Process-Output-Customer) diagram, and Critical-to-Quality (CTQ). In Data Understanding phase, it is known that the Defects Per Million Opportunities (DPMO) value is 1210.12. Data preparation phase was carried out with data cleaning, reduction, and discretization. Based on the Modeling result using Decision Tree C4.5 and FP-Growth algorithm, it is known that the dominant attributes causing high rejection are smeared ink, white spots, uneven varnish, and delamination. Decision Tree model accuracy of 90.24% indicates that the model is performing well. Analysis using FMEA yielded priority correction to the causes of smeared ink, uneven varnish, and delamination. Process improvement in Deployment phase was the application of plate cleaning and mounting form, printing process checklist, and SOP for sheet inspection. The improvement plans managed to improve the quality by rising sigma level from 4.533 to 4.648 sigma and decrease defect rate to 1.559%.
Co-Authors Adrian Sjamsul Qomar Agung Sasongko Ahmad Farhan Ahmad Farhan Ahmad Farhan, Ahmad Amal Witonohadi Ananda Kejora Rotty Annisa Dewi Akbari, Annisa Dewi Cahyanti, Annisa Clara Dwi Dadang Surjasa, Dadang Datu Mas Satriaji Daniswara Dedy Sugiarto Dewayana, Triwulandari Satitidjati Dian Mardi Safitri Didien Suhardini Dinda Rhamanda Docki Saraswati Dorina Hetharia Elisa Anggraeni, Elisa Emelia Sari Erliza Hambali Fanny Nurul Amalia Ferren Liling Sia Fitriana, Rina Graciela, Felice Hanifati, Azizah Nurul Idriwal Mayusda Ika Wahyu Utami Ilham, Ahmad Indah Permata Sari Indah Permata Sari Indah Permata Sari Iveline Anne Marie Iwan Purwanto Johnson Saragih Johnson Saragih, Johnson Johson Saragih Kemala Sari, Debbie Krismantan, Thalia Putri Lailatus Siami Liang, Yun-Chia Maharani, Annastasya Devita Mareta, Sannia Maulidya , Rahmi Meisy Kharisma Idris Mustaqim, Daffa Akiel Nabiha, Gina Almas Nabila, Shadrina Putri Nadia Mufida Nadia Mufida Nora Azmi Novia Rahmawati Novia Rahmawati Parwadi Moengin PUDJI ASTUTI Ramadhani, Resty Ayu Rambung, Richard Antonius Resty Ayu Ramadhani Rhamanda, Dinda Richard Antonius Rambung Rina Fitriana Rina Fitriana, Rina Rully Mardjono Sari, Emilia Satitidjati Dewayana, Triwulandari Suryana, Yunita Friscilia Tania Theodora Thalia Putri Krismantan Tiena Gustina Amran Tiena Gustina Amran, Tiena Triwulandari Satitidjati Dewayana Triwulandari Satitidjati Dewayana Triwulandari, Triwulandari Tryantomo Lokhilmahful Palgunadi Wawan Kurniawan Wawan Kurniawan Winnugroho Wiratman, Manfaluthy Hakim, Tiara Aninditha, Aru W. Sudoyo, Joedo Prihartono Yun-Chia Liang