Rothenburg ob der Tauber, Germany – Polyurethane casting resins company, Ebalta and RepRap, a 3d printing machinery company, have launched an isotropic polyurethane 3d printing resin.
RepRap and Ebalta said that the new material is cross-linkable and can be processed in as a liquid. This means products made from it have shorter lead times than competitive materials that have to be melted, RepRap said.
The material can be processed in RepRap’s LAM 3d printers and has a range of properties from soft to hard. It can be used to produce part which would be difficult or impossible with injection moulding techniques and the material has ‘virtually identical mechanical properties to those of an injection-moulded part,’ RepRap said.
The new polyurethane 3d printing materials process at room temperature, which makes the process more efficient than 3d printing molten materials, said RepRap. Material shrinkage is typically 1-2% and there is no thermal warping which can occur with other systems.
Parts made with the new material could be used in the automotive, aeronautical and construction sectors, the firms suggest. Ebalta is located in Frankonia 175 km (110 m) southeast of Frankfurt