Method and device for dismantling multilayer systems including at least one organic component

A device for delamination/dismantling multilayer systems comprising several layers including at least one organic layer, the layers being separated by interfaces, wherein it comprises at least the following elements in combination:

• a reactor comprising:
• a first inlet for the introduction of at least the multilayer system SM, a second inlet for the introduction of a fluid comprising at least one gas causing separation of the layers, and at least one inlet for a liquid or a mixture of liquids that do not react with the surface of the layers,
• a first outlet for recovering the gas at the end of the method,
• wherein a treatment is performed in which the value of a treatment temperature Tr is greater than the critical temperature Tc of the gas and lower than the degradation temperature Tg of the layers of the multilayer system, and wherein a treatment pressure value Pr is higher than the critical pressure Pc of the gas and the volume proportion of a mixture of liquids with respect to the gas is at least 15%, and
• a temperature setting device of the reactor, to raise the temperature of the gas/liquid mixture,
• wherein said device comprises a gas reservoir connected to a cooling device via a first conduit, a high pressure pump whose output is connected to a preheater, said preheater being connected to a first valve equipping a gas introduction conduit connected to the first inlet, a gas evacuation conduit towards an enclosure.

A device for delamination/dismantling multilayer systems comprising several layers including at least one organic layer, the layers being separated by interfaces, wherein it comprises at least the following elements in combination:

• a reactor comprising:
• a first inlet for the introduction of at least the multilayer system SM, a second inlet for the introduction of a fluid comprising at least one gas causing separation of the layers, and at least one inlet for a liquid or a mixture of liquids that do not react with the surface of the layers,
• a first outlet for recovering the gas at the end of the method,
• wherein a treatment is performed in which the value of a treatment temperature Tr is greater than the critical temperature Tc of the gas and lower than the degradation temperature Tg of the layers of the multilayer system, and wherein a treatment pressure value Pr is higher than the critical pressure Pc of the gas and the volume proportion of a mixture of liquids with respect to the gas is at least 15%, and
• a temperature setting device of the reactor, to raise the temperature of the gas/liquid mixture,
• wherein said device comprises one or more lines for introducing liquids connected to a second inlet of the reactor, a line comprising at least a second conduit equipped with a third control valve, a pump which receives the liquid or the mixture of liquids that do not react with the surface of the layers stored in a reservoir, a drain circuit connected to a second outlet of the reactor that is connected to a conduit equipped with a valve and a reservoir or drain pipe.