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All Journal IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) International Journal of Applied Research and Sustainable Sciences (IJARSS)
Tarigan, Ratna Kristina
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Religion Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Decision Sciences, Operations Research & Management Education Energy Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Perhitungan Panas pada Pemanasan Preform PET di Unit Heater Blow molding PT. Sinar Sosro Saragih, Koko Pratama; Tarigan, Ratna Kristina; Putri, Jaihy Sabana
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 3 No 3 (2024): Desember
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v3i3.154

Abstract

Blow molding is a bottle molding process aimed at forming PET preforms into PET bottles. This process is highly influenced by heat, which functions to soften the PET preform to facilitate its formation in the subsequent stages. Therefore, temperature control is a critical factor in this process. The energy balance method was used to calculate the heat required during the preform heating process in the heater unit. The results showed that the heat required during the preform heating process in the heater unit was 6,441,218.72 cal/hour, 6,531,114.65 cal/hour, and 6,486,129.51 cal/hour. The heat transfer efficiency of the heater for the preform was 90.74%, 92.00%, and 91.37%, respectively.
Calculation of Impurity Levels in SIR 3CV Type Rubber and Mass Balance at the Drying Station in PT. XYZ North Sumatera Tarigan, Ratna Kristina; Simatupang, Dimas Frananta
International Journal of Applied Research and Sustainable Sciences Vol. 2 No. 1 (2024): January 2024
Publisher : MultiTech Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59890/ijarss.v2i1.1253

Abstract

The quality of latex significantly affects the quality level of rubber produced, with one of its parameters being the impurity level, with a standard value of 0.03%. The impurity level strongly influences the rubber quality, where higher impurity levels correspond to lower rubber quality, and vice versa. The research method employed was experimental and calculation using mass balance. The calculated results indicated impurity levels in the rubber as follows: 0.0059%, 0.0069%, 0.0074%, 0.0419%, 0.0054%, 0.0429%, and 0.0444%. The average total impurity level was 0.0219%. However, some rubber samples did not meet quality standards due to contaminated tapping equipment, inadequate washing processes, and damaged filtration tools. In the mass balance at the drying station, the first input material was 125 kg/hour with a water component balance of 50%, HAS (Hevea Acidic Solution) 12%, SMBS (Sodium Metabisulfite) 8%, and latex 30%. The second input material is 18.75 kg/hour, consisting of 100% steam. The output material at the drying station is 143.75 kg/hour, with a water component balance of 43.47%, HAS 10.43%, SMBS 6.95%, latex 26.08%, and steam 13.07%.
Co-Authors Dimas Frananta Simatupang Putri, Jaihy Sabana Saragih, Koko Pratama