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rPET Quality Report

Figure 3: Examples of

Figure 3: Examples of plastics and metals that typically sink with granulated PET flakes and become difficult to remove. ........................................................................................... 18 Figure 4: Example of plastic materials such as ABS, OPS and PVC which are widely present in the recycled streams and will sink and end up cross contaminating PET flake during density separation processes. ........................................................................................ 18 Figure 5: Example of loss of clear PET flakes during flake sorting due to the presence of high levels of opaque coloured PET flakes from small PET bottles. .................................... 19 Figure 6: Example of granulated flakes with labels prior to several air classification and washing steps. ............................................................................................................. 20 Figure 7: Measurement of rPET colour is performed by evaluating the L, a, b values. ....... 25 Figure 8: An example of the Maguire low-pressure dryer used to dry the virgin PET at 150 o C for 30-35 minutes. ........................................................................................................ 26 Figure 9: Photos of the injection moulder used during the plaque moulding PET discolouration simulation trials. ...................................................................................... 27 Figure 10: Measured discolouration effect of PVC contamination on the b-value (yellowing) of PET material. ........................................................................................................... 28 Figure 11: Example of the type of discolouration occurring in moulded plaques when virgin PET is mixed with 200ppm of PVC particles. (The top left and bottom left plaques are virgin PET control samples for comparison and all others are plaques moulded with 200ppm PVC) .................................................................................................................................. 29 Figure 12: Example of colour content at a UK reprocessor in flake that is

Figure 30: Examples of UK PET tubs and the types of lidding films and label decorations typically used. .............................................................................................................. 47 Figure 31: Example of printed PET cups used for fruit smoothies, beer cups and other takeaway drinks. ................................................................................................................ 47 Figure 32: Example of a „recycle friendly‟ APR approved label for PET thermoforms (Source: Avery Dennison). .......................................................................................................... 48 Tables Table 1: Example of typical contaminants and their control measures during reprocessing. 14 Table 2: Blend ratios of contaminants with virgin PET resin. ........................................... 26 Table 3: Measured L,a,b values indicating discolouration impacts of PVC particles. ........... 28 Table 4: Colour content and types of colours found in washed and sorted flake from a UK reprocessor. The flake was sieved and the colour content in the

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