Abstract: A method for recycling polyester containers, in particular PET containers, said method including the following method steps: sorting the containers, comminuting the containers to produce flakes, friction washing the flakes, sorting the flakes, and extruding and granulating the cleaned flakes. The flake-sorting process is used to separate flakes which have a foreign polymer that is different from the polyester, and the flake-sorting process is a combination of a color-sorting process, a screening step, and polymer-sorting process.

Abstract: The invention relates to a reusable plastics container (100), comprising a container body (20), a container base (10) and a container opening (30) located opposite the container base. A repeating structure (21), in particular a honeycomb structure, formed by depressions (22) and ribs (23) surrounding the depressions (22) is disposed on the container body (20). Alternatively, grooves are disposed on the container body. At least 90% of the surfaces of the depressions (22) and of the ribs (23) and/or the grooves are visible from the container opening (30).

Abstract: The invention relates to a reusable plastics container (100), comprising a container body (20), a container base (10) and a container opening (30) located opposite the container base. A repeating structure (21), in particular a honeycomb structure, formed by depressions (22) and ribs (23) surrounding the depressions (22) is disposed on the container body (20). Alternatively, grooves are disposed on the container body. At least 90% of the surfaces of the depressions (22) and of the ribs (23) and/or the grooves are visible from the container opening (30).

Abstract: The invention relates to a preform made of polyester for producing a plastic container in a blow molding process which comprises a tube-like preform body which is closed at its one longitudinal end and at its other longitudinal end has a neck section provided with an opening for pouring. The polyester is based substantially on furandicarboxylic acid and diols, wherein the diols are derived partly from the group of spiro compounds and partly from the group of conventional diols.