PENGENDALIAN KUALITAS PRODUK DIVISI PRODUKSI BAGIAN SEWING FACTORY I PT DAIWABO GARMENT INDONESIA MENGGUNAKAN METODE SIX SIGMA

Abstract

Abstrak

PT Daiwabo Garment Indonesia merupakan salah satu perusahaan manufaktur yang bergerak dalam industri garmen dengan memproduksi pakaian jadi menggunakan metode make to order. PT Daiwabo Garment Indonesia memiliki beberapa divisi, salah satunya divisi produksi. Divisi produksi pada factory I PT Daiwabo Garment Indonesia menghasilkan beberapa produk seperti woven trunk, pants, pajamas, dan lain-lain dengan beberapa langkah produksi, yaitu cutting, sewing, finishing, packaging, hingga menjadi finished good. Pada proses sewing, masih sering dijumpai defect yang mempengaruhi kualitas pada produk pun proses produksi. Untuk mengurangi defect, dilakukan pengendalian kualitas menggunakan metode six sigma. Langkah yang dilakukan dalam penelitian ini berdasarkan siklus DMAIC (define, measure, analyze, improve, dan control). Hasil penelitian menunjukan bahwa teridentifikasi dua jenis defect yang paling sering muncul sebagai critical to quality, yakni missed stitch dan puckering. Dalam memproduksi satu juta produk masih terdapat 5253 unit defect yang menunjukan bahwa proses masih bernilai 4.023. Penyebab adanya defect dianalisis menggunakan cause and effect diagram. Setelah itu, dilakukan pengukuran target untuk mengetahu berapa persen penurunan DPMO dan peningkatan sigma diperlukan, serta diberikan rekomendasi perbaikan dengan action plan terkait faktor man, machine, method, material, dan environment.

Kata kunci: DMAIC; kualitas; pengendalian kualitas; six sigma

Abstract

[Product Quality Control of Production Division Sewing Departement Factory I PT Daiwabo Garment Indonesia using Six Sigma Method] PT Daiwabo Garment Indonesia is one of the manufacturing companies engaged in the garment industry by producing apparel using the make to order method. PT Daiwabo Garment Indonesia has several divisions, one of them is the production division. The production division at factory I PT Daiwabo Garment Indonesia produces several products such as woven trunks, pants, pajamas, and others using several production steps, namely cutting, sewing, finishing, and packaging, to become finished good. In the sewing process, defects are often encountered that affect the quality of the product and the production process. To reduce defects, quality control is carried out using the six sigma method. The steps taken in this study are based on the DMAIC cycle (define, measure, analyze, improve, and control). The results showed there are two types of defects that most often appeared as critical to quality, namely missed stitches and puckering. In producing one million products, there are still 5253 units of defects which indicate that the process is still worth 4,023. The causes of the defect was analyzed using a cause and effect diagram. After that, target measurements are carried out to find out what percentage of DPMO reduction and sigma increase are needed, then recommendations for improvement described in the action plans related to man, machine, method, material, and environmental factors.

Keywords: DMAIC; quality; quality control; six sigma