Sensor trends in processing and packaging of foods and pharmaceuticals

Purpose - This paper aims to reveal developments in sensors applied to packaging lines. Design/methodology/approach - Machine vision systems including special-purpose smart cameras and a high-speed camera are examined. The technology of radio frequency identification (RFID) is explained, and some products relevant to packaging are highlighted. Advances in X-ray, metal detection and gas-leak detection equipment are discussed. Findings - Manufacturers are making smart cameras and high-speed cameras easier to use. There is a trend for manufacturers to provide portable as well as in-line instrumentation, for example, in code readers and gas leak detectors. RFID is an emerging technique for improving traceability in the supply chain, and some labelling machines additionally program an embedded chip. Originality/value - Tracks the latest developments in sensors for engineers in the food and pharmaceutical packaging industries.