The APR Sorting Potential Test Methods can accurately predict whether a plastic package successfully sorts into the correct commodity stream at MRFs and plastics reclaimers. The test methods offer laboratory and pilot scale representations of standard collection and sorting procedures for single-stream recyclables. The test methods assume that comingled recyclables are collected curbside, compacted in a typical recycling collection truck, sorted through an automated MRF into bales of similar materials, then further processed at the plastics reclaimer in their original form before being reduced in size to a complete pellet or flake for use in new manufacturing.
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Sortation is complicated and sorting parameters cannot always be distilled into design guidance. When packages come close to the limits of sorting correctly, a test is necessary to determine the outcome. The APR Sorting Potential Test Protocols enable testing in a controlled environment at laboratory or pilot scale. It is difficult, if not impossible, for brands and packaging engineers to find full-scale sorting facilities that are capable of testing and proven to be representative of the industry average
The APR Sorting Potential Test Protocols represent the entire sorting process at both MRFs and reclaimers. To otherwise test sortation definitively, one would need to run a package through multiple industrial scale facilities. Both processes must be represented to draw accurate conclusions. The APR Sorting Potential Test Protocols differentiate themselves from alternative methods of sort testing by providing an expected average for consistency and reliably. Sorting technologies vary in commercial practice and it is not the intent of these protocols to model every possible process outcome but rather to represent a common set of parameters widely employed in the recycling industry.
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All APR Sorting Potential Test Protocols have undergone extensive comparisons to real-life industrial processes to ensure that the results accurately predict the average sorting process. The protocols are designed to provide consistent, repeatable results, which may not occur in field tests. Variability is common even within any given recycling plant. Factors outside the operators’ control affect sorting results – even the weather. (For example, wet material sorts differently than dry material, and rubber machinery is harder when cold than hot). The sorting potential protocols establish fixed parameters to remove this variability and provide consistent results not possible in field testing.
An isolated test at one MRF or reclaimer would yield inconclusive results. Only field testing at many facilities and on many processes, such as was conducted by APR, will result in an accurate prediction of the industry average. Industrial processes of different sizes, equipment manufacturers, and technologies were carefully chosen to represent the variability within the industry. Testing on these processes was used to develop each protocol.
APR does not require that every package be tested through the sorting potential protocols. The APR Design® Guide classifies each feature of packaging design according to known recycling performance, when possible. When a package design feature is classified as “Requires Testing,” the APR Design® Guide specifies the necessary test. See below the different types of Sortation Test Protocols that APR offers.
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