Highlights• The top load strength of the final bottle was associated with the stretch rod movement • The panel (body) weight is directly and seriously affected by the preform surface temperature.• The final pressure and stretch rod also affected the body weight by bilateral interaction.• GRA results (except for Stress Crack Resistance) are greater than the general results of Taguchi.• The general result of Stress Crack Resistance with Taguchi is greater than GRA.
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