Global Patent Index - EP 1651421 A2

EP 1651421 A2 20060503 - PROCESS FOR PRODUCTION OF STARCH-BASED THERMOPLASTIC MATERIALS

Title (en)

PROCESS FOR PRODUCTION OF STARCH-BASED THERMOPLASTIC MATERIALS

Title (de)

VERFAHREN ZUR HERSTELLUNG VON THERMOPLASTISCHEN MATERIALIEN AUF STÄRKEBASIS

Title (fr)

PROCEDE DE PRODUCTION DE MATIERES THERMOPLASTIQUES A BASE D'AMIDON

Publication

EP 1651421 A2 20060503 (EN)

Application

EP 04766150 A 20040707

Priority

  • EP 2004051393 W 20040707
  • IT MI20031472 A 20030718

Abstract (en)

[origin: WO2005011956A2] Process for production or processing of starch-based thermoplastic materials comprising: feeding of starch, water and any other components, as plasticizers, for example polyhydric alcohols, into a first section of a screw extruder; compression and homogenization of the material with formation of a melted mixture in said first section; compression of the mixture in a second section of a screw extruder and extrusion via an appropriately shaped die; process comprising the passage of said material through a pressure control valve located between said first and second section.

IPC 1-7

B29C 47/50; B29C 47/76; B29C 47/92

IPC 8 full level

B29C 47/00 (2006.01); B29C 48/38 (2019.01); B29C 48/74 (2019.01); B29C 48/92 (2019.01)

CPC (source: EP)

B29C 48/022 (2019.02); B29C 48/38 (2019.02); B29C 48/745 (2019.02); B29C 48/92 (2019.02); B29C 48/04 (2019.02); B29C 48/08 (2019.02); B29C 48/09 (2019.02); B29C 2948/92019 (2019.02); B29C 2948/92104 (2019.02); B29C 2948/92161 (2019.02); B29C 2948/9218 (2019.02); B29C 2948/92314 (2019.02); B29C 2948/92333 (2019.02); B29C 2948/92371 (2019.02); B29C 2948/9238 (2019.02); B29C 2948/92514 (2019.02); B29C 2948/92704 (2019.02); B29C 2948/92809 (2019.02); B29C 2948/92828 (2019.02); B29C 2948/92866 (2019.02); B29C 2948/92876 (2019.02); B29C 2948/92971 (2019.02); B29K 2003/00 (2013.01); B29K 2005/00 (2013.01)

Citation (search report)

See references of WO 2005011956A3

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR

DOCDB simple family (publication)

WO 2005011956 A2 20050210; WO 2005011956 A3 20050414; EP 1651421 A2 20060503; IT MI20031472 A1 20050119

DOCDB simple family (application)

EP 2004051393 W 20040707; EP 04766150 A 20040707; IT MI20031472 A 20030718