EP 1918047 A1 20080507 - Method for producing an alloy for ornamental articles and alloy for ornamental articles which can be obtained in particular by means of this method
Title (en)
Method for producing an alloy for ornamental articles and alloy for ornamental articles which can be obtained in particular by means of this method
Title (de)
Verfahren zur Herstellung einer Legierung für Ziergegenstände und Legierung für Ziergegenstände, die insbesondere mit diesem Verfahren hergestellt werden kann
Title (fr)
Procédé pour la fabrication d'un alliage pour objets d'ornement et alliage pour objets d'ornement qui peut être obtenu en particulier selon ce procédé
Publication
Application
Priority
EP 07425215 A 20070413
Abstract (en)
Method for producing an alloy for ornamental articles, which envisages introducing, into the plasticization chamber of an extruder at a temperature of between 120 and 220 °C, an amount of a polymer composition and an amount of a metallic powder formed with one or more precious metals having particles with an average size of less than 0.5 micron in order to achieve thorough mixing between the amount of polymer composition in the liquid state and the amount of metallic powder by means of one or more screws provided with mixing segments; and then an extrusion and cutting step in order to obtain an intermediate product with a precious metal content to be treated during a subsequent forming step aimed at obtaining an ornamental article in the desired form.
IPC 8 full level
B22F 3/20 (2006.01); A44C 27/00 (2006.01); B22F 3/22 (2006.01)
CPC (source: EP)
A44C 27/003 (2013.01); B22F 3/20 (2013.01); C22C 32/0094 (2013.01)
Citation (applicant)
- US 4476090 A 19841009 - HEIDSIEK HORST [DE], et al
- US 5578383 A 19961126 - BEYER HANS-HERMANN [DE], et al
- US 4282174 A 19810804 - CHASE BARRY J, et al
Citation (search report)
- [DX] US 5578383 A 19961126 - BEYER HANS-HERMANN [DE], et al
- [X] US 4282174 A 19810804 - CHASE BARRY J, et al
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA HR MK RS
DOCDB simple family (publication)
EP 1918047 A1 20080507; EP 1918047 B1 20090527; AT E432138 T1 20090615; DE 602007001180 D1 20090709
DOCDB simple family (application)
EP 07425215 A 20070413; AT 07425215 T 20070413; DE 602007001180 T 20070413