Precise dosing technology for 3D printing with liquid silicone rubber

The liquid silicone rubber (LSR) process is becoming increasingly important in the production of elastic components. However, its use in 3D printing and modified injection molding systems requires precise material conditioning in order to achieve high quality standards. With its Nodopur, Nodopox and Tardosil series, the German company TARTLER offers specially developed dosing and mixing systems for this demanding process.

LSR materials typically consist of two-component systems that combine siloxanes with fillers and additives. Processing places special demands on the machines, as high-viscosity and low-viscosity components require different conveying and mixing techniques. TARTLER’s dosing and mixing systems are designed to optimize both the flowability and homogeneity of the materials. A key feature is the integration of a Siemens control system, which allows flexible adjustment of the mixing ratios. A combination of follower plate technology and vacuum degassing ensures uninterrupted material conveying.

“One of their special features is that they can be equipped with our follower plate and degassing technology, depending on the characteristics of the materials used. Not least for this reason, they can be optimally integrated into industry- or customer-specific processes,” says Managing Director Udo Tartler.

The Nodopox series is used for highly viscous components. These systems enable precise control of the dosing process, resulting in consistent material quality. Alternatively, the Nodopur series offers solutions for low to medium viscosity LSR materials, which are characterized by high flowability. These systems can be modularly expanded and adapted to individual production processes.

“We also offer buffer containers that are automatically filled from refill stations, as well as a number of patented vacuum options. This enables us to guarantee uninterrupted dosing and a high level of process reliability,” says Udo Tartler.