EP 4347210 A1 20240410 - RECYCLING METHOD
Title (en)
RECYCLING METHOD
Title (de)
RECYCLING-VERFAHREN
Title (fr)
PROCÉDÉ DE RECYCLAGE
Publication
Application
Priority
- CH 6412021 A 20210602
- EP 2022065039 W 20220602
Abstract (en)
[origin: WO2022253953A1] The invention relates to a method for recycling packaging wastes made of PET or polyolefins (PO), which packaging wastes are referred to as first articles and can be decolorized in accordance with the "key-locker" principle, and at least second articles made of PET or PO, comprising the following method steps: (a) presorting the first and second articles, (b) prewashing the first and second articles, (c) comminuting the articles to form flakes, (d) washing the articles in a first washing step or intensive washing step, (e) dewatering and drying the flakes in a first drying step, (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. In order to concentrate the first articles, the first articles are separated from the second articles by means of optical sorting and, after being separated, are decolored separate from the second articles in a decoloring step (j) by means of a reagent referred to as a "key". The first decolored articles are temporarily stored in a store (m) after step (j). After being stored, the first articles are fed to separate steps (g) and (h) or (i).
IPC 8 full level
B29B 17/02 (2006.01); B29B 13/00 (2006.01); B29B 13/02 (2006.01); B29B 17/04 (2006.01); C08J 11/08 (2006.01)
CPC (source: CH EP US)
B29B 13/00 (2013.01 - EP); B29B 13/02 (2013.01 - EP); B29B 13/06 (2013.01 - US); B29B 17/02 (2013.01 - CH EP US); B29B 17/0412 (2013.01 - CH EP US); C08J 11/06 (2013.01 - US); C08J 11/08 (2013.01 - CH EP); B29B 2013/002 (2013.01 - EP); B29B 2017/0015 (2013.01 - EP US); B29B 2017/0203 (2013.01 - EP US); B29B 2017/0279 (2013.01 - EP US); B29B 2017/0282 (2013.01 - EP); B29K 2023/00 (2013.01 - US); B29K 2067/003 (2013.01 - US); C08J 2323/00 (2013.01 - EP US); C08J 2367/00 (2013.01 - EP); C08J 2367/02 (2013.01 - US); Y02W 30/62 (2015.05 - EP)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
WO 2022253953 A1 20221208; BR 112023025149 A2 20240227; CH 718700 A1 20221215; CN 117597222 A 20240223; EP 4347210 A1 20240410; MX 2023013834 A 20231214; US 2024262973 A1 20240808
DOCDB simple family (application)
EP 2022065039 W 20220602; BR 112023025149 A 20220602; CH 6412021 A 20210602; CN 202280039484 A 20220602; EP 22732955 A 20220602; MX 2023013834 A 20220602; US 202218567000 A 20220602