we have the right plastic powder materials for SLS
Selective Laser Sintering
Evonik had already delivered the first powder material of the VESTOSINT® brand for the additive manufacturing market - SLS technology - in 1996, thus setting standards that currently apply to 3D printing of plastic materials.
SELECTIVE LASER SINTERING TO SHAPE Polymer MATERIALS
Selective laser sintering is based on the principle of the layer-wise build-up of a structure by combining powders to form a part. In general, the process can be characterized as follows:
specification of a three-dimensional model in the form of CAD data
no use of molding tools
generative build-up; molding occurs not by removal of material, but by applying itany desired geometry
offers freedom of design
Evonik has many years of experience in developing and processing products that lend themselves specifically to new 3d printing processes. Based on CAD data sets, 3d printing generates complex components through the layerwise application of polymer powders, filaments, fluids, binders or other suitable materials.
The principle of additive manufacturing using Selective laser sintering
The principle is always the same: A material is laid down layer by layer. In practice, however, a wide variety of processes lead to the same result. One of the most important processes is selective laser sintering (SLS). Here, a powder is melted by means of a laser, layer by layer. This produces very precisely detailed and robust components made of either plastic or metal. The high-performance plastic polyamide 12, which Evonik offers under the brand name VESTOSINT®, is ideally suited for this process. It’s a very popular material, because the components made from it are especially strong.
3d geometry model
Application of a layer of powdered material
Powdered material is solidified into a cross-section of the model
Building platform is lowered
The next layer of powder is applied
The process repeats itself until the part is complete
Complete part after removal of loose powder
The specialty chemicals company is a world leader in the production of polyamide 12 powders (PA 12), which have been used in 3D printing for over 20 years. The development of the flexible high-performance powder expands Evonik’s existing product portfolio of synthetic materials for 3D printing. Evonik produces the powder materials at its largest global site, the Marl Chemical Park.