Recyclability of packaging : science- and enforcement-based evidence regarding Art. 6 and Annex II of the Proposal for a Regulation on Packaging and Packaging Waste, amending Regulation (EU) 2019/1020 and Directive (EU) 2019/904, and repealing Directive 94/62/EC / Umweltbundesamt, Section III 1.6 Plastics and Packaging and Subsection Implementation of the German Packaging Act