A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
VERFAHREN ZUM KONTINUIERLICHEN THERMISCHEN ENTBINDERN EINER THERMOPLASTISCHEN FORMMASSE
The invention relates to a process for the continuous thermal removal of binder from a metallic and/or ceramic shaped body which has been produced by injection molding, extrusion or pressing using a thermoplastic composition and comprises at least one polyoxymethylene homopolymer or copolymer as binder in a binder removal oven, which comprises the steps (a) removal of binder from the shaped body in a binder removal oven at a temperature which is from 5 to 20° C. below, preferably from 10 to 15° C. below, the temperature of a second temperature stage over a period of from 4 to 12 hours in a first temperature stage in an oxygen-comprising atmosphere, (b) removal of binder from the shaped body at a temperature in the range >160 to 200° C. over a period of from 4 to 12 hours in an oxygen-comprising atmosphere in a second temperature stage and (c) removal of binder from the shaped body at a temperature in the range from 200 to 600° C. over a period of from 2 to 8 hours in a third temperature stage in an oxygen-comprising or neutral or reducing atmosphere, with the shaped bodies being transported through the binder removal oven during process steps (a) and (b).
VERFAHREN ZUM KONTINUIERLICHEN THERMISCHEN ENTBINDERN EINER THERMOPLASTISCHEN FORMMASSE
The invention relates to a process for the continuous thermal removal of binder from a metallic and/or ceramic shaped body which has been produced by injection molding, extrusion or pressing using a thermoplastic composition and comprises at least one polyoxymethylene homopolymer or copolymer as binder in a binder removal oven, which comprises the steps (a) removal of binder from the shaped body in a binder removal oven at a temperature which is from 5 to 20° C. below, preferably from 10 to 15° C. below, the temperature of a second temperature stage over a period of from 4 to 12 hours in a first temperature stage in an oxygen-comprising atmosphere, (b) removal of binder from the shaped body at a temperature in the range >160 to 200° C. over a period of from 4 to 12 hours in an oxygen-comprising atmosphere in a second temperature stage and (c) removal of binder from the shaped body at a temperature in the range from 200 to 600° C. over a period of from 2 to 8 hours in a third temperature stage in an oxygen-comprising or neutral or reducing atmosphere, with the shaped bodies being transported through the binder removal oven during process steps (a) and (b).
VERFAHREN ZUM KONTINUIERLICHEN THERMISCHEN ENTBINDERN EINER THERMOPLASTISCHEN FORMMASSE
METHOD FOR THE CONTINUOUS THERMAL DEBINDING OF A THERMOPLASTIC MOLDING COMPOUND
PROCÉDÉ DE DÉLIANTAGE THERMIQUE CONTINU D UNE MATIÈRE MOULABLE THERMOPLASTIQUE
TER MAAT JOHAN HERMAN HENDRIK (author) / WOHLFROMM HANS (author) / BLÖMACHER MARTIN (author) / THOM ARND (author) / KERN ANDREAS (author)
2019-05-22
Patent
Electronic Resource
German
VERFAHREN ZUM SCHNELLEN ENTBINDERN VON ABGELEGTEN, HOCHGEFÜLLTEN POLYMERFILAMENTEN
| European Patent Office | 2022
Verfahren zum schnellen Entbindern von abgelegten, hochgefüllten Polymerfilamenten
| European Patent Office | 2022
VERFAHREN ZUR HERSTELLUNG EINER GRANULIERTEN THERMOPLASTISCHEN FÜLLMASSE
| European Patent Office | 2018
VERFAHREN ZUR HERSTELLUNG EINES THERMOPLASTISCHEN FORMMASSENPULVERS
| European Patent Office | 2022