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Reifenhäuser: Food-safe sheet from PET recyclate

Reifenhäuser: Food-safe sheet from PET recyclate

News 11.05.2022
CSC PET Sheet Line.b1482f637bcbf7209b57f8c2f79f9b47
Reifenhäuser MIREX PET sheet lines produce sustainable PET sheet. Photo: Reifenhäuser

If recycled material comes into direct contact with food, it requires special certification from the European Food and Safety Authority (EFSA). Up to now, the production of sheet for food packaging of this type has been very laborious and complicated. Reifenhäuser MIREX PET lines now simplify the task for processors. By using a co-rotating twin-screw extruder and a specially developed high-performance vacuum system, the certified process allows PET recycling material to be processed directly without pretreatment and predrying - processes that are usually required. Processors then save their investment in an extra line component and avoid additional energy and maintenance costs. It also allows for quick material and product changes, for example from post-consumer PET bottle flake (PCR) to post-industrial PET production waste (PIR) or to virgin PET. The end product, such as a meat tray, then meets extremely high hygiene standards and is EFSA-compliant for use in direct contact with food.

Reifenhäuser Cast Sheet Coating supports customers during the certification process with the competent authorities. This includes the cleaning process of the flake material, quality monitoring of the feed material, and production under the criteria defined by EFSA.

Another feature is the automatic documentation of relevant production data. EFSA audits require recipe- and product-related data from the certified process to be stored for several years. The ExtrusionOS Production Compliance software bundle was specially developed to monitor and securely document production processes and compliance with EFSA-related thresholds in a real-time database. A live dashboard provides a transparent display of ongoing production and thresholds, permitting rapid response to anomalies. ExtrusionOS Production Compliance is based on Reifenhäuser's connectivity solution ExtrusionOS Core & c.Hub Middleware. It can also be retrofitted to existing lines.

Via ExtrusionOS production data can also be transferred to a digital product passport - for example, via the open R-Cycle standard. Digital product passports are data records clearly linked to preliminary and end products that contain specific data on the materials, ingredients, and utilization of the product. Specific markings allow their use for data-based and therefore more precise waste sorting and recycling processes, among other things.

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