EP 3497155 A1 20190619 - METHOD FOR PRODUCING EXPANDED GRANULAR MATERIAL
Title (en)
METHOD FOR PRODUCING EXPANDED GRANULAR MATERIAL
Title (de)
VERFAHREN ZUR HERSTELLUNG VON EXPANDIERTEM GRANULAT
Title (fr)
PROCÉDÉ DE FABRICATION DE GRANULÉ EXPANSÉ
Publication
Application
Priority
- EP 16183173 A 20160808
- EP 2017069424 W 20170801
Abstract (en)
[origin: WO2018029040A1] The invention relates to a method for producing expanded foam particles from one or more polyesters based on aliphatic or aliphatic and aromatic dicarboxylic acids and aliphatic diols, comprising the following steps: (a) melting the polyester and mixing the polyester with 1 to 3.5 weight percent, in relation to the polyester, of the blowing agent carbon dioxide and/or nitrogen and 0.1 to 2 weight percent of a nucleating agent and pressing the blowing-agent-containing and nucleated polyester melt through a perforated plate, which is temperature-controlled to a temperature between 150°C and 185°C, into a granulating chamber; (b) comminuting the polymer melt pressed through the perforated plate into individual expanding granules by means of a cutting device; (c) discharging the granules from the granulating chamber in a water flow having a temperature of 5 to 90 °C, the pressure of which water flow is 0.1 bar to 20 bar above the ambient pressure.
IPC 8 full level
C08J 9/16 (2006.01); B29B 9/06 (2006.01); B29C 44/34 (2006.01); C08J 9/12 (2006.01); C08J 9/34 (2006.01); C08L 67/02 (2006.01)
CPC (source: EP US)
B29B 9/065 (2013.01 - EP US); B29B 9/12 (2013.01 - EP US); B29B 9/14 (2013.01 - EP US); B29C 44/3461 (2013.01 - EP US); B29C 48/0012 (2019.01 - EP US); B29C 48/0022 (2019.01 - EP US); C08J 9/0061 (2013.01 - EP US); C08J 9/0066 (2013.01 - EP US); C08J 9/122 (2013.01 - EP US); C08J 9/16 (2013.01 - EP US); C08J 9/232 (2013.01 - EP US); C08J 9/236 (2013.01 - EP US); C08J 9/34 (2013.01 - EP US); C08L 67/02 (2013.01 - US); B29B 9/16 (2013.01 - EP US); B29C 44/3426 (2013.01 - EP); B29C 44/445 (2013.01 - EP US); B29K 2033/04 (2013.01 - EP US); B29K 2105/0005 (2013.01 - EP US); B29K 2995/0063 (2013.01 - EP US); C08J 2201/026 (2013.01 - EP US); C08J 2201/03 (2013.01 - EP US); C08J 2203/06 (2013.01 - EP US); C08J 2203/182 (2013.01 - EP US); C08J 2300/16 (2013.01 - EP US); C08J 2367/02 (2013.01 - EP US); C08J 2400/16 (2013.01 - EP US); C08J 2467/02 (2013.01 - EP US); C08L 2203/14 (2013.01 - US)
Citation (search report)
See references of WO 2018029040A1
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
DOCDB simple family (publication)
WO 2018029040 A1 20180215; CN 109642041 A 20190416; EP 3497155 A1 20190619; US 2019202087 A1 20190704
DOCDB simple family (application)
EP 2017069424 W 20170801; CN 201780049397 A 20170801; EP 17743367 A 20170801; US 201716323664 A 20170801