EP 4182138 A1 20230524 - METHOD FOR PRODUCING A PANEL FROM SECONDARY RAW MATERIALS, PANEL FORMED FROM SECONDARY RAW MATERIALS, AND PANEL FORMED FROM SECONDARY RAW MATERIALS PRODUCED BY THIS METHOD
Title (en)
METHOD FOR PRODUCING A PANEL FROM SECONDARY RAW MATERIALS, PANEL FORMED FROM SECONDARY RAW MATERIALS, AND PANEL FORMED FROM SECONDARY RAW MATERIALS PRODUCED BY THIS METHOD
Title (de)
VERFAHREN ZUR HERSTELLUNG EINER PLATTE AUS SEKUNDÄRROHSTOFFEN, PLATTE AUS SEKUNDÄRROHSTOFFEN UND NACH DIESEM VERFAHREN HERGESTELLTE PLATTE AUS SEKUNDÄRROHSTOFFEN
Title (fr)
PROCÉDÉ DE PRODUCTION D'UN PANNEAU À PARTIR DE MATIÈRES PREMIÈRES SECONDAIRES, PANNEAU FORMÉ À PARTIR DE MATIÈRES PREMIÈRES SECONDAIRES, ET PANNEAU FORMÉ À PARTIR DE MATIÈRES PREMIÈRES SECONDAIRES PRODUIT PAR LEDIT PROCÉDÉ
Publication
Application
Priority
EP 2020000134 W 20200716
Abstract (en)
[origin: WO2022012733A1] The invention relates to a method for producing a panel (20) from secondary raw materials, in particular from a ground material consisting of comminuted and ground polyurethane foam residues and optionally further solid auxiliaries. To perform the method, a mixture of ground material, isocyanate, water and optionally further liquid or pourable additives is pressed under high pressure and elevated temperature to form a panel. The mixture is continuously fed here in the form of a bulk material, uniformly distributed in width and thickness, to a press nip of a double-belt press (10) formed of endless belts running in parallel. As it passes through the double-belt press (10) the fed bulk material is subjected to a defined pressure perpendicular to the parallel endless belts and to an elevated temperature so as to form a hot endless panel at the discharge from the double-belt press (10). To protect the metallic surfaces of the endless belts from sticking, a separation layer is introduced during the pressing process of the double-belt press (10) between the metallic surfaces of the endless belts and the bulk material.
IPC 8 full level
B29C 43/48 (2006.01); B29B 17/00 (2006.01); B29B 17/04 (2006.01); B29C 43/28 (2006.01); B29C 44/30 (2006.01); B29C 44/32 (2006.01); B32B 37/10 (2006.01); B32B 37/26 (2006.01); B32B 38/00 (2006.01); B29K 75/00 (2006.01); B29K 105/26 (2006.01); B29K 475/00 (2006.01); B29L 7/00 (2006.01); B29L 9/00 (2006.01)
CPC (source: EP)
B29C 43/48 (2013.01); B29C 44/30 (2013.01); B29C 44/321 (2016.10); B32B 37/24 (2013.01); B32B 37/26 (2013.01); B29B 17/0042 (2013.01); B29B 17/0412 (2013.01); B29B 2017/042 (2013.01); B29C 43/28 (2013.01); B29C 2043/483 (2013.01); B29K 2075/00 (2013.01); B29K 2105/26 (2013.01); B29K 2475/00 (2013.01); B29K 2995/0002 (2013.01); B29K 2995/0015 (2013.01); B29L 2007/002 (2013.01); B29L 2009/00 (2013.01); B29L 2009/003 (2013.01); B32B 37/1027 (2013.01); B32B 2037/268 (2013.01); Y02W 30/62 (2015.05)
Citation (search report)
See references of WO 2022012733A1
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)
DOCDB simple family (application)
EP 2020000134 W 20200716; EP 20751072 A 20200716