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Unique Thermoset Injection Molding System for Auto Body Panels
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English
Abstract
This paper describes a technology Co produce large-area auto components with improved mechanical properties) especially impact strength, but still retaining BMC's merits. After three years of trials, we developed a new long fiber reinforced high impact composite molding system for thermoset injection molding. (LCM System)
Our system combines unique design of a new type injection machine with a novel formulation and manufacturing process of special BMC that includes unsaturated polyester resin and long glass fiber reinforcement, designed to maximize retention of long fiber length during processing.
This system has nearly equal cycle-time and results in less fiber breakage compared with a conventional injection process, thus produces parts with better flexural modulus, impact strength and class-A surface needed for auto exterior body panels, based on trials with several molds for auto components.
Authors
Citation
Hashimoto, T. and Sonoda, T., "Unique Thermoset Injection Molding System for Auto Body Panels," SAE Technical Paper 870285, 1987, https://doi.org/10.4271/870285.Also In
References
- Guillon D. “ZHC-The Latest Answer to High Volume Composite Materials” Sesseion 1-E 38th Annual Technical Conference 1983 Reinforced Plastics/Composite institute The Society of the Plastics Industry, Inc.
- Lasell D. M. Lowry J. R. “Mechanical Property improvement of injection Molded Premix” Session 24-E 38th Annual Technical Conference 1983 Reinforced Plastics/Composites institute. S.P.I.
- Liebold R. “Injection Molding of Large Area Glass Fiber Reinforced Components - A Comparison with Compression Molding from the Processor's Point of View” Session 9-E 40th Annual Technical Conference 1985 Reinforced Plastics/Composites institute. S.P.I.