#3dp Revolution for Medical and Dental Applications
Fused Filament Fabrication
Evonik is worldwide leading in development of high performance materials for Fused Filament Fabrication applied in medical technology and collaborates with Apium Additive Technologies to develop new PEEK filament materials suitable for the FFF technology. Furthermore, the specialty chemicals company offers highly specialized inorganic particles AEROSIL®, AEROXIDE® and SIPERNAT® to optimize the product performance of thermoplastic or elastomeric materials for the 3D Printing process of material extrusion.
Fused Filament Fabrication (FFF) 3D printing technology meets the requirements of individual parts, while being extremely material-saving and capable of processing the high-performance polymer PEEK. Using FFF, the material is melted in filament form, a kind of plastic strand, through the printhead using high temperatures of up to 500 °C and applied in different layers to the desired component. Decisive for the component quality is the controlled solidification process of the semi-crystalline plastic.
EVONIK AND APIUM COLLABORATE IN DEVELOPMENT OF 3DP PEEK MEDICAL MATERIALS
Thanks to the 3D printing, prostheses and implants are manufactured in the medical sector which can be used in oral and maxillofacial surgery. Individual implants such as dentures can be offered by additive manufacturing. The balance between the right materials and the right choice of the manufacturing process play an important role.
Evonik and Apium Additive Technologies jointly research and develop new PEEK polymer filaments as implant material bein applied in the medical technology. Based on Evonik's high-performance polymer VESTAKEEP® PEEK - a biomaterial for medical applications - it is intended to find out how this material can be optimally processed as filament using FFF technology to produce the final product, one in 3D printing technology implant. The various VESTAKEEP® classes are examined and, if necessary, modified to achieve the desired result.
The basic principle of FUSED FILAMENT FABRICATION using building material and support material.
Some methods melt or soften the material to produce material layers. Besides the deposition of single elements in the 3D structure, fast and continuous deposition of 1-dimensional structures within the 2D slayer is possible in this technology. In fused filament fabrication, also known as fused deposition modeling (FDM™), the model or part is produced by extruding small beads or streams of material that harden immediately wile cooling to form layered structures. A stream or filament of thermoplastic, a metal filament, or other (composite) material is fed into an extrusion nozzle head (3D printer extruder), which liquefies the material and turns the flow on and off. Meanwhile printers with simultaneous multi material deposition are available, also allowing support structures for complex geometries.
Evonik offers highly specialized inorganic particles AEROSIL®, AEROXIDE® and SIPERNAT® to optimize the product performance of thermoplastic or elastomeric materials for the 3D Printing process of material extrusion.