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Perancangan Mold Base Dengan Sistem Two Plate Mold Untuk Produk Spesimen Uji Tarik Mario Sariski Dwi Ellianto; Pongky Lubas Wahyudi
Motor Bakar : Jurnal Teknik Mesin Vol 7, No 1 (2023): Motor Bakar: Jurnal Teknik Mesin
Publisher : Universitas Muhammadiyah Tangerang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31000/mbjtm.v7i1.8375

Abstract

A mold is a tool for printing plastic products. The way it works is by installing the mold on a plastic injection machine, and then the machine does the injection process to put molten plastic material into the mold. In the mold, there is a cavity that matches the shape of the product to be made. Before a mold can be used, it must be designed and manufactured. ATK Polytechnic of Yogyakarta has one injection molding machine with several molds available. The available molds do not yet have a design based on various information, analysis, and calculations, so this research will make a mold design that is expected to be a guideline for making plastic injection molds and is expected to be able to analyze the needs for cavities, gates, ejector systems, cooling system. In this study, the design and calculation of mold construction, including the cavity, parting line, gate, ejector, cavity plate, core plate, runner, and cooling, were discussed. The purpose of this study is to determine how to design a basic mold construction with a two-mold plate system, with the resulting product being a tensile test specimen. The result of this tensile test specimen mold design is a mold base design drawing with a mold size of 350mm x 500mm x 255mm, the number of cavities being 4 cavities per mold, and the volume of the tensile test specimen mold being 33.0122 cm3.
OPTIMASI PARAMETER PARISON PROGRAMMING TERHADAP KETEBALAN JERIGEN SEBAGAI UPAYA PENINGKATAN KUALITAS PRODUK PADA MESIN BLOW MOLDING Latifah Listyalina; Mario Sariski Dwi Ellianto
Inaque : Journal of Industrial and Quality Engineering Vol 14 No 1 (2026): Inaque April 2026
Publisher : Teknik Industri Unikom

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34010/iqe.v14i1.19721

Abstract

Extrusion blow molding is one of the most widely used manufacturing methods in the plastic industry for producing hollow containers, such as jerrycans, with demands for uniform wall thickness and efficient material usage. One of the key factors affecting product quality in this process is parison programming, as the parison thickness distribution determines the material distribution during expansion inside the mold. However, improper parison settings often result in uneven wall thickness distribution, which can reduce structural quality and increase material consumption. This study aims to analyze and optimize parison thickness settings in the extrusion blow molding process to achieve a more uniform wall thickness distribution in 5-liter jerrycans according to design specifications. The research method was conducted by setting the Scale Parison Thickness parameter to 10%, operating the machine according to Standard Operating Procedures (SOP), and testing the product wall thickness at five different areas: the handle, upper section, upper body, lower body, and bottom section. Each area was measured at ten points using a micrometer to obtain the average thickness values. The results showed that the average thicknesses at the handle, upper section, upper body, lower body, and bottom section were 0.60 mm, 0.62 mm, 0.74 mm, 0.90 mm, and 0.89 mm, respectively, with a product weight of 141.1 grams. The obtained thickness distribution was still not fully uniform, indicating that the parison programming settings require further refinement to produce a thinner body section and thicker handle and bottom sections in accordance with design standards. This study concludes that more precise optimization of parison programming parameters can improve thickness uniformity, material efficiency, and the structural quality of the product. Furthermore, the findings provide practical contributions to the plastic industry by improving process control, reducing the potential for product defects, and supporting sustainable production cost efficiency.