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US 11,331,827 B2Granted
Method for the 3D-printing of mineral binder compositions
AssigneeSika Technology AG
InventorsMaxime Liard, Didier Lootens, Marc Schumacher
Life of this patent
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Abstract
In a method for the 3D-printing of hydrous mineral binder compositions, an aqueous accelerator is mixed with the binder composition in a continuous mixer. The method is very robust and makes it possible to quickly print even large moulded bodies having a uniform aesthetic surface and very good strength development properties.
Claims16
A method for applying a mineral binder composition by 3D printing, comprising the steps of
- providing a hydrous mineral binder composition,
- feeding the hydrous mineral binder composition to a continuous mixer comprising
- a mixing region with at least one dynamic mixing element and at least one inlet,
- a conveying region connected to the mixing region and comprising at least one conveying device and an outlet,
- the hydrous mineral binder composition being conveyed through the at least one inlet into the mixing region,
- feeding at least one aqueous accelerator for the setting of the hydrous mineral binder composition into the mixing region of the continuous mixer,
- mixing the at least one aqueous accelerator with the hydrous binder composition in the mixing region of the continuous mixer to give an accelerated binder composition,
- conveying the accelerated binder composition by the conveying device to the outlet, and
- applying the accelerated binder composition layer by layer.
6 more elements
Dependencies are inferred from the claim text.