STUDI SIX SIGMA DALAM PENGENDALIAN KUALITAS PROSES PRINTING PADA GARMEN

Abstract

Abstrak
PT XYZ merupakan perusahaan garmen dengan sistem produksi make-to-order. Salah satu proses
produksinya adalah printing. Berdasarkan data defect sepanjang tahun 2022, didapatkan persentase
defect sebesar 0,314% di mana menurut Six Sigma, persentase defect terhadap jumlah produksi yang
ideal adalah 0,0003%. Penelitian ini bertujuan untuk mengusulkan solusi dalam meningkatkan kualitas
proses in-house printing di PT XYZ. Hal ini dilakukan karena tingginya jumlah defect pada proses inhouse

printing yang seharusnya bisa diminimalkan pada proses sebelumnya. Peneliti menggunakan
metode Six Sigma karena metode ini memampukan peneliti untuk dapat mencoba memberikan solusi
berdasarkan data kuantitatif beserta pengetahuan kualitatif yang telah didapatkan dari karyawankaryawan
lapangan
yang
tentunya
memiliki
pengalaman
dan
pemahaman
lebih
dalam
daripada
peneliti.

Berdasarkan
penelitian
ini,
didapatkan
bahwa
level
sigma
rata-rata
proses
in-house
printing
PT
XYZ

pada
tahun
2022
berada
di
level
sigma
4,58
yang
tentunya
belum
mencapai
level
sigma
ideal
yaitu
6.

Defect

terbesar diperoleh oleh defect snag/pull/pick yang merupakan salah satu defect fabric (kain),
sehingga dilakukan analisis penyebab defect terbesar menggunakan fishbone diagram dan mengusulkan
solusi perbaikan terhadap masalah tersebut.

Kata kunci: DMAIC, industri garmen, printing kain, six sigma

Abstract
PT XYZ is a garment company with a make-to-order production system. One of the production processes
is printing. Based on defect data for 12 periods in 2022, the total defect percentage is 0.314% which
according to Six Sigma theory, the percentage of defects to the ideal production amount is 0.0003%.
Therefore, this research aims to propose solutions to improve the quality of the in-house printing process
at PT XYZ. This is done because of the high number of defects in the in-house printing process that should
have been minimized in the previous process. The researcher used the Six Sigma method to be able to try
to provide solutions based on quantitative data along with qualitative knowledge that has been obtained
from field employees who certainly have deeper experience and understanding than the researcher.
Based on this research, it is found that the average sigma level of PT XYZ's in-house printing process in
2022 is at a sigma level of 4.58 which certainly has not reached the ideal sigma level of 6. The largest
defect is obtained by the snag/pull/pick defect which is one of the fabric defects, not the print defect, so
then analyze the causes of the largest defect using the fishbone diagram and propose an improvement
solution for these causes.

Keywords: DMAIC; fabric printing; garment industry; six sigma