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Electricity Consumption Estimation of the Polymer Material Injection-Molding Manufacturing Process: Empirical Model and Application
Ana Elduque 1 , Daniel Elduque 2 , Carmelo Pina 1 , Isabel Clavería, 2 Carlos Javierre 2
1  BSH Electrodomésticos España S. A., Avda. de la Industria, 49, 50016 Zaragoza, Spain
2  I+, Department of Mechanical Engineering, EINA, University of Zaragoza, C/María de Luna, 3, 50018 Zaragoza, Spain

Published: 16 September 2018 by MDPI in Materials
MDPI, Volume 11; 10.3390/ma11091740
Abstract: Polymer injection-molding is one of the most used manufacturing processes for the production of plastic products. Its electricity consumption highly influences its cost as well as its environmental impact. Reducing these factors is one of the challenges that material science and production engineering face today. However, there is currently a lack of data regarding electricity consumption values for injection-molding, which leads to significant errors due to the inherent high variability of injection-molding and its configurations. In this paper, an empirical model is proposed to better estimate the electricity consumption and the environmental impact of the injection-molding process. This empirical model was created after measuring the electricity consumption of a wide range of parts. It provides a method to estimate both electricity consumption and environmental impact, taking into account characteristics of both the molded parts and the molding machine. A case study of an induction cooktop housing is presented, showing adequate accuracy of the empirical model and the importance of proper machine selection to reduce cost, electricity consumption, and environmental impact.
Keywords: environmental impact, electricity consumption, manufacturing processes, Empirical Model, polymer material, Injection-molding
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