Rotasi
Vol 26, No 3 (2024): VOLUME 26, NOMOR 3, JULI 2024

Experimental Study : Thermal Variations and Pressure's Impact on Plastic Injection Molding Quality

Leksonowati, Nur Fitria (Unknown)
Pamungkas, Nurman (Unknown)
Manurung, Meilani Mandalena (Unknown)



Article Info

Publish Date
30 Jul 2024

Abstract

This study investigates the effects of varying hot water temperatures (75℃, 85℃, and 95℃) and injection pressures (328 Bar and 928 Bar) on the outcomes of experimental tests in injection molding. Results indicate that at 75℃, 85℃, and 95℃ with an injection pressure of 328 Bar, the product displayed a Short Mold defect despite a slight increase in mass. At 75℃ with an increased injection pressure of 928 Bar, a White Line defect was observed, while at 85℃ and 928 Bar, a defect-free part was produced with optimal mass. However, at 95℃, a Bright Color defect was evident, leading to part rejection despite a slight mass increase. The findings highlight the significance of meticulous parameter selection, with an optimal combination identified as 85℃ hot water temperature and 928 Bar injection pressure for defect-free production in injection molding processes. 

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