Title: X-RAY DETECTABLE SMC FOR APPLICATIONS WITH DIRECT FOOD CONTACT
Abstract: Plastic composites were discovered to have superior properties, such as lightweight, costeffective, corrosion and chemical resistant, which makes them a preferable material compared to stainless steel and other metals to use in food industry. However, potential contamination of plastic materials in food products remains as a major concern for food manufactures, and the fact that these contaminations from standard plastics cannot be detected by metal detectors or x-ray machines really limits their applications in food industry. In order to solve this problem, novel xray detectable plastics were developed in this work by adding radiopacity additives to the resin. The results have shown that by controlling the size and distribution of these particles, a food contact compliant x-ray detectable sheet molding compound (SMC) was successfully fabricated. Pieces or fragments with the size as small as one cubic millimeter can be detected using standard x-ray inspection systems to reduce the risk of contaminated product entering the market. These novel x-ray detectable materials significantly increase the added safety in the food manufacturing industry without sacrificing the processability, mechanical properties or EU regulation compliance.
Authors: Ruotian Gao, Christine Ericksen, Kurt Butler
Conference: CAMX 2017 –Orlando