TECHNOLOGY | INNOVATION
IdeoPak, a US-based consultancy, offers custom testing services for packaging and has patented technology for real-time monitoring of post- consumer recycled (PCR) materials, including in-line testing of volatile organic content (VOC) and organic and inorganic contaminants in PCR. At AMI’s Plastics Recycling conference in Long Beach, California, in June, IdeoPak described its Continuous Monitoring Technology partnership with US-based Revolution Sustainable Solutions, which reprocesses recycled resin into a range of film and sheet products as well as offering post- industrial and PCR resins to global brands and OEMs. An IdeoPak patented sensor array is currently in the testing phase at a Revolution facility.
Quality assurance The technology is designed to detect heavy metals (eg, cadmium, chromium, lead and mercury) and odour-causing VOCs, with a primary goal of providing assurance of quality and compliance to brand-owners or other end-users through on-line testing and reporting of PCR-containing plastic products that they are using. A converter or compounder can simultaneously use the system to
monitor their process and take corrective action if it goes out of specification. “The system is designed for remote auditing,
which provides transparency and accountability to end-users,” said Keith Vorst, Partner at IdeoPak. “As companies are aiming to use more PCR, they are looking for a greater level of comfort in the quality of that material, beyond simply relying on an FDA ‘letter of no objection’ or a lab report of a selected sample. Our on-line testing system is set up for frequent testing, with a measurement taken by the sensor array typically every 15 minutes. A manufacturer’s customers can log in to the system and generate a report of the test results of the plastic product they’ve purchased, to confirm that it is within specification for heavy metals and chemicals of concern.” The array of sensors includes X-ray fluorescence
to measure heavy metals, as well as photoionisa- tion detection, flame ionisation detection, and electrochemical sensors to measure VOCs. Lab tests (eg, chromatography and inductively coupled plasma mass spectrometry) are used to train the sensors and models to identify the odour profile of a given contaminant.
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