公开(公告)号：US20240262973A1

公开(公告)日：2024-08-08

申请号：US18567000

申请日：2022-06-02

申请人： ALPLA WERKE ALWIN LEHNER GMBH & CO. KG

发明人： Michael Heyde ,  Christiane Horn ,  Bryan-Cody Borchers

IPC分类号： C08J11/06 ,  B29B13/06 ,  B29B17/00 ,  B29B17/02 ,  B29B17/04 ,  B29K23/00 ,  B29K67/00

CPC分类号： C08J11/06 ,  B29B13/06 ,  B29B17/02 ,  B29B17/0412 ,  B29B2017/0015 ,  B29B2017/0203 ,  B29B2017/0279 ,  B29K2023/00 ,  B29K2067/003 ,  C08J2323/00 ,  C08J2367/02

摘要： A method for recycling packaging wastes, referred to as first articles, made of PET or polyolefins (PO), that can be decolored in accordance with the “key-locker” principle, and second articles made of PET or PO, comprising the steps: (a) pre-sorting the first and second articles, (b) pre-washing the articles, (c) comminuting the articles to form flakes, (d) washing the articles, (e) dewatering and drying the flakes, (f) flake sorting, (g) extrusion, (h) solid-state polycondensation (SSP) in the case of PET wastes, or (i) decontamination in the case of PO wastes. The first articles are separated from the second articles by optical sorting and are decolored separate from the second articles in a decoloring step (j) by a reagent referred to as a “key.” The first decolored articles are temporarily stored (m) after step (j). After being stored, the first articles are fed to separate steps (g) and (h) or (i).