EP 4168146 A1 20230426 - CLEANING GASES FROM THE DEGASSING OF POLYMER MELTS
Title (en)
CLEANING GASES FROM THE DEGASSING OF POLYMER MELTS
Title (de)
REINIGUNG VON GASEN AUS DEM ENTGASEN VON POLYMERSCHMELZEN
Title (fr)
ÉPURATION DE GAZ ISSUS DU DÉGAZAGE DE POLYMÈRES FONDUS
Publication
Application
Priority
- DE 102020116414 A 20200622
- EP 2021067001 W 20210622
Abstract (en)
[origin: CA3183272A1] The invention relates to a method and a device 1 for the purification of gases from the degassing of polymer melts - in particular, for the continuous further processing to form stretched polymer films.In this case, the gas to be purified is fed from a vacuum zone 2 of a plasticizing unit, via at least one vacuum or degassing line 3, to a vacuum separator 40 with a gas inlet 42 and a gas outlet 43 in which condensible, separable by freezing, and/or re-sublimable substances are separated from the supplied and purified gas by means of a cooling arrangement 50, and the separated substances are removed from the vacuum separator 40. By means of a heating arrangement 60, the substances separated by means of the cooling arrangement 50 are at least partially liquefied or softened in the vacuum separator 40 and removed from the vacuum separator 40 in particular by suction.This makes it possible to create a particularly efficient method and a particularly effective device 1 for the purification of gases from the degassing of polymer melts.
IPC 8 full level
B01D 5/00 (2006.01); B01D 7/00 (2006.01); B01D 19/00 (2006.01); B01D 53/00 (2006.01); B29B 13/00 (2006.01); B29C 37/00 (2006.01); B29C 48/76 (2019.01); F28D 7/12 (2006.01)
CPC (source: EP KR US)
B01D 5/0012 (2013.01 - EP KR US); B01D 5/0051 (2013.01 - US); B01D 5/0072 (2013.01 - EP US); B01D 5/009 (2013.01 - EP KR US); B01D 5/0096 (2013.01 - EP KR US); B01D 7/00 (2013.01 - EP); B01D 19/0036 (2013.01 - EP KR US); B01D 53/002 (2013.01 - EP KR US); B29B 13/00 (2013.01 - EP KR); B29C 37/006 (2013.01 - KR US); B29C 48/08 (2019.01 - EP KR); B29C 48/10 (2019.01 - EP); B29C 48/27 (2019.01 - EP KR); B29C 48/76 (2019.01 - EP KR); B29C 48/92 (2019.01 - EP KR); F28D 7/12 (2013.01 - KR); B29B 2013/005 (2013.01 - EP KR US); B29C 37/006 (2013.01 - EP); F28D 7/12 (2013.01 - EP)
Citation (search report)
See references of WO 2021259931A1
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)
DE 102020116414 B3 20211014; BR 112022026228 A2 20230117; CA 3183272 A1 20211230; CN 116018191 A 20230425; CO 2023000430 A2 20230126; EP 4168146 A1 20230426; JP 2023532148 A 20230726; KR 20230029833 A 20230303; MX 2023000116 A 20230411; PE 20230538 A1 20230329; US 2023241531 A1 20230803; WO 2021259931 A1 20211230
DOCDB simple family (application)
DE 102020116414 A 20200622; BR 112022026228 A 20210622; CA 3183272 A 20210622; CN 202180044706 A 20210622; CO 2023000430 A 20230116; EP 2021067001 W 20210622; EP 21737580 A 20210622; JP 2023521974 A 20210622; KR 20237002384 A 20210622; MX 2023000116 A 20210622; PE 2022003020 A 20210622; US 202118011885 A 20210622