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All Journal Journal of Engineering and Management in Industrial System Engineering Science Letter
Rosidah Jaafar
Universiti Teknikal Malaysia Melaka
Computer Science & IT Control & Systems Engineering Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology

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ANALYSIS ON VOLUMETRIC SHRINKAGE OF PLASTIC FOOD CONTAINER MADE FROM AN INJECTION MOLDING PROCESS Rosidah Jaafar; Hambali Arep; Effendi Mohamad; Jeefferie Abd Razak; Muhamad Arfauz A Rahman; Rahmi Yuniarti
Journal of Engineering and Management in Industrial System Vol 8, No 2 (2020)
Publisher : Badan Penerbit Jurnal, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jemis/2020.008.02.3

Abstract

The plastic injection molding process is one of the widely used of the manufacturing process to manufacture the plastic product with high productivity.  Moreover, the food packaging manufacturing industry undergoes the trials and errors to obtain the optimal setting of the process parameters in order to minimize the quality issues and these trials and errors are time consuming and costly.  The aim of this study is to improve the quality of the butter tub by minimizing the volumetric shrinkage. This study is to deal with the application of Moldflow integrating with the statistical technique to minimize the volumetric shrinkage the butter tub which depends on the process parameters of the plastic injection molding.  For this purpose, the rectangular shape of butter tub is designed by utilizing the SolidWorks.  Molflow is used to simulate the plastic filling of the single cavity mold of butter tub based on the Taguchi’s  orthogonal array table.  In addition, the analysis of variance (ANOVA) is applied to investigate significant impact of the process parameters on the quality of the butter tub. Minitab is used to optimize the response of the volumetric shrinkage by selecting the most appropriate process parameters that maximizing the desirability value.  Furthermore, the butter tub has a uniform thickness which was 1.2 mm and its factor of safety was 3.383 and the volumetric shrinkage response have optimized by 0.956 %. The melt temperature and mold temperature are found to be the most significant process parameters for the plastic injection molding process of butter tub and the volumetric shrinkage value obtained from the simulation is verified by the calculated volumetric shrinkage value.
THE EFFECTS OF r-HDPE/r-PP FORMULATION RATIO INTO MECHANICAL, THERMAL AND MORPHOLOGICAL BEHAVIOR OF r-HDPE/r-PP POLYMERIC BLENDS Jeefferie Abd Razak; Siti Zaleha Wahid; Noraiham Mohamad; Poppy Puspitasari; Rosidah Jaafar; Pindo Tutuko
Journal of Engineering and Management in Industrial System Vol 8, No 2 (2020)
Publisher : Badan Penerbit Jurnal, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jemis.2020.008.02.1

Abstract

This study has reported the effects of different formulation ratio between recycled high density polyethylene (r-HDPE) and recycled polypropylene (r-PP) into the resulted mechanical, thermal and morphological properties of r-HDPE/r-PP polymeric blends. About five (5) different formulation ratio of r-HDPE/r-PP have been prepared and tested. The best combination ratio between r-HDPE and r-PP was determined in this work. It was found that the 70/30 wt.% of r-HDPE/r-PP blend possessed an outstanding mechanical and physical strength. About 59.80% and 2.30% of positive improvement in comparison to 0/100 wt.% of r-HDPE/r-PP was achieved for both of tensile strength and hardness, respectively. Interestingly, for 70/30 wt.% of r-HDPE/r-PP blend had also experienced major increased in their elongation at break up to 473%. The fracture morphological behavior of the tested samples that were observed via SEM observation, had established the interaction between the structure and properties of produced r-HDPE/r-PP blends, especially on the miscibility state between the r-HDPE and r-PP phases. Thermal evaluation by using the DSC had confirmed the partial miscibility state due to dominant peak shifting at 120 - 140°C and obvious melting peak reduction pattern. Overall, from this study, it was found that the blending between r-HDPE and r-PP into r-HDPE/r-PP blends are feasible to improve the properties of primary phase.
An Interim Study of Integrating Spindle, Laser, and Plotter in a CNC Router Machine Rosidah Jaafar; Norfariza Ab Wahab; Basri Bin Bidin; Mohammad Nor Mustaqim Bin Johari; Kaliswaran A/L Mogal; Megat Iskandar Fedileh
Engineering Science Letter Vol. 1 No. 02 (2022): Engineering Science Letter
Publisher : The Indonesian Institute of Science and Technology Research

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3707.927 KB) | DOI: 10.56741/esl.v1i02.159

Abstract

Although there are so many CNC routers that have been created all around the world, when this manuscript was written, an integrated CNC router with multi different functions was still not common. In this work, we proposed, designed, fabricated, and evaluated a low-cost CNC Router machine that can perform numerous tasks (i.e., spindle engraving, laser, and plotter). Although we first employed a market-available CNC machine, we have developed, changed, and improved almost everything of it so that it can run and go through multiple processes in a single coding process with higher accuracy and efficiency. As a result, the proposed machine is adjusted to conduct an integrated operation without making any significant changes. Through the calibration process, we have validated that the proposed system is capable of performing high-accuracy processes. The proposed CNC router has a wide range of applications and can conduct a variety of engraving procedures, including plotting. Furthermore, when the machine is running, the project runs thru the checks on the accuracy analysis through several processes to ensure the accurate accuracy of the three available processes (spindle, laser, and plotter).
Co-Authors Basri Bin Bidin Effendi Mohamad Hambali Arep Jeefferie Abd Razak Kaliswaran A/L Mogal Megat Iskandar Fedileh Mohammad Nor Mustaqim Bin Johari Muhamad Arfauz A Rahman Noraiham Mohamad Norfariza Ab Wahab Pindo Tutuko Rahmi Yuniarti Rr. Poppy Puspitasari Siti Zaleha Wahid