ACEO® Technology

Introducing:
Unique
Drop-on-Demand
Technology

The ACEO® technology is based on a "Drop-on-Demand" principle. The print head deposits single silicone voxels on a building platform, which flow together smoothly, forming a homogeneous surface. After printing a layer, the curing is activated by a UV light. In this manner a three-dimensional object is built up layer by layer. In order to realize complex structures, overhangs and cavities, a support material is printed during the same process. Right after the end of the printing, the silicone form part is removed from the printer. The support material, which is environmentally safe, is easily and quickly washed out with water. Subsequently, the part is tempered to achieve the final mechanical properties.

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„We decided to develop a contactless technology, which means that we have no connection between the print head and the component during the dosing process of the single droplets.“ explains the project manager Dr. Bernd Pachaly and continues „This brings significant advantages that allow both high precision and freedom in design.”

The Chemical Reaction Inside: Hydrosilylation using UV-light

Silicone rubber must be vulcanized to transform it into elastomeric materials. The chemical process behind the ACEO® technology is based on platinum-catalyzed addition curing. During the curing process, the crosslinker’s Si-H groups react with the vinyl groups of the polymer to form a three-dimensional network. The result is a 100% silicone. The advantage is that no byproducts are released, as a result the silicone rubber cures without shrinkage and without releasing substances.

Addition Curing

Chart illustrating the process of a addition curing.