Exentis Group AG (Exentis) 3D screen printing technology is a novel approach to 3D printing. The technology is protected by 13 patent and patent application families (Exentis 3D Mass Customization®). It is the only 3D printing technology capable of mass producing 3D printed parts. In addition, based on the same production units (the Exentis terminology for the self-developed 3D printers), it offers a choice between any number (over one hundred) of materials. Ultimately, all classes of materials (ceramics, polymers and metals) that are available in powder form can be printed. These are processed into pastes with additives to produce ultra-fine geometries, and multi-layer systems with different materials, as well as several materials in each level can be realized in one system. The method currently has its limits in the size of individual components which cannot exceed a side length of 400 mm and a height of 200 mm.
The process itself is a cold-pressure process, which thus works energy and environmentally friendly in the production of, for instance, several thousand components per print job. With the inline versions of the production units, printing speeds of approx. 5 seconds per printing layer can be achieved, significantly faster than for established 3D printing processes. For example, in the case of ceramic pressure sensors with a height of 10 mm and a print layer height of 50 micrometers, i.e. 200 layers, around 1,600 components can be produced simultaneously in 15 minutes.
The necessary densification of the components by subsequent sintering takes place via the combination of several 10,000 components in a sintering batch and therefore leads to the energy-efficient one-time use of the furnace per production batch.
Exentis is also the only 3D printing process to offer production technology suitable for cleanroom environment. Today, with bioprinting, living cells are already being printed into tissue and novel forms of active substance administration are being produced, under GMP guidelines.
Compared with other classic manufacturing processes, such as hot isostatic pressing, the technology allows any shape as well as smaller dimensions, not currently available with today's tools...
Session: F3 - Advanced Filter Media Developments and Manufacturing Methods
Day: 22 October 2019
Time: 16:45 - 18:00 h