OPTIMIZATION OF FORMULA AND MANUFACTURING PROCESS USING THE DESIGN OF EXPERIMENT METHOD TO IMPROVE THE PRODUCTâS STABILITY AND QUALITY OF FACE WASH X
This study aims to solve the problem in PT. XYZ due to consumer’s complaints in product Face Wash X which has phase separation and the consistency is too runny. The study was conducted by analyzing potential sources of problems using evaluation notes during product development, Ishikawa-Fishbon...
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| Format: | Theses |
| Language: | Indonesia |
| Online Access: | https://digilib.itb.ac.id/gdl/view/66277 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | This study aims to solve the problem in PT. XYZ due to consumer’s complaints in
product Face Wash X which has phase separation and the consistency is too
runny. The study was conducted by analyzing potential sources of problems using
evaluation notes during product development, Ishikawa-Fishbone Diagram, and
Failure Mode Effect Analysis (FMEA) on the stability and consistency response of
the product that was used as a Critical Quality Attribute (CQA), namely the pH
value (Y1), viscosity (Y2), & the difference in conductivity (Y3) between the
products before and after the accelerated stability using the heating-cooling
method. Factors that are considered to affect the CQA of the product are the
concentration of poly-ol (X1), fatty alcohol concentration (X2), surfactant
concentration (X3), and process termination temperature (X4) were optimized
using the Design of Experiment (DOE)-Box Bhenken and resulting the factors that
theoretically will give optimum responses according to the product CQA, X1 at
21.72%, X2 at 3.93%, X3 at 5.12%, and X4 at 50°C. Design space is created by
overlaying plots. Further analysis was carried out by comparing the theoretical
response with the actual response. From the experimental results, the error in all
responses is smaller than the degree of confidence 5.00%. The accelerated
stability evaluation concluded that the optimized product was stable with no
separation found through visual observations or changes in microscopic structure
observations, and no statistically significant shift in peak temperature thermal
values. Based on the results, the results of the optimization of the formula and
manufacturing process of face wash X using the Design of Experiment (DOE)
method can be applied to PT. XYZ.
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