This dataset corresponds to the paper: “The impact of collection portfolio expansion on key performance indicators of the Dutch recycling system for Post-Consumer Plastic Packaging Waste, a comparison between 2014 and 2017” (2019). The dataset includes two folders, one for the MFA model for 2017 and one for the model results of both the 2014 and 2017 model. Folder 1 (Tables A to I) contains the model description. Tables A, B and C list general input data for the model, such as gross collected amounts and the sorting distribution. Tables D, E, F and G relates to compositional data of separately collected post-consumer plastic packaging waste (PCPPW). In tables D and E the measured average compositions of collected materials and sorted products are listed (input STAN). The output of STAN for collected PCPPW and sorted products made therefrom, are listed in tables F and G. Tables H and I list the compositional data of PCPPW that was mechanically recovered from mixed municipal solid waste (MSW). In table H the measured average compositions of mechanically recovered PCPPW and sorted products made therefrom are listed (input STAN). The output data of STAN for mechanical recovered PCPPW and the sorted products made therefrom are listed in table I. Folder 2 (Tables J to W) shows all modelling results for 2014 and 2017. Table J lists the average gross composition of the separately collected PCPPW. Table K lists the collection fates of all the packaging types. Table L lists the sorting fates of all packaging types for separately collected PCPPW. Table M lists the sorting fates of all packaging types for mechanical recovered PCPPW. Table N lists the End-of-Life fates of all packaging types. Table O lists the average compositions of sorted products and compares those to the DKR sorting specifications to verify general compliance. In order to verify compliance of the sorted products, several interpretations had to be made to translate our list of packaging types in the list of criteria named in the specifications. The ...