3D printing process plastics

How High Speed Sintering and Multi Jet Fusion work

Fascination, requirements, fields of application

How do HSS and MJF work in detail?

The basic principle common to both processes is based on the interaction of plastic powder, ink and heat. In the first step, a fine layer of plastic powder is evenly distributed on a heated building platform.

An industrial print head is then used to apply a special liquid to the area where the material is to be fused. The printing ink acts as a heat absorber and ensures that the powder is then heated and fused in a targeted manner. This process is repeated layer by layer until a complete three-dimensional component has been created.

Both processes use a large heat source – such as an infrared lamp or a heating module – to fuse the powder in the desired areas.

HSS: Large installation space. High efficiency.

With a build volume of 1000 × 540 × 400 mm, HSS systems offer a volume of approx. 216 liters, while our MJF systems with a build volume of 380 × 284 × 380 mm provide around 41 liters. Due to the significantly larger build volume, more parts can be produced per job via HSS. This makes the process both more productive and more economical.

Due to the smaller installation space, MJF technology is used for orders that require the specialized niche material TPU.

The advantages of High Speed Sintering and Multi Jet Fusion

A major advantage of these technologies is the speed and efficiency of production. As no complex laser technology is used, energy can be applied to larger areas at the same time.

In addition, as with the SLS process, the components do not require any additional support structures, as the unused powder serves as a support material during the construction process. As a result, complex geometries can be easily realized – such as cavities, undercuts or movable elements in one piece.

After production, the loose powder is removed and can be partially reused, which optimizes the use of materials.

Areas of application

  • In the automotive industry, for example, the processes are used in the manufacture of holders, covers, clips or fixtures.
  • In medical technology, they are used to produce ergonomic handles, custom-fit device housings or patient-specific models for planning and diagnostics.
  • HSS and MJF also open up new possibilities in the consumer goods industry – for example, in customized products such as headphones, spectacle frames or tailor-made housings for electronic products.
  • Mechanical and plant engineering uses the processes to produce functional prototypes, grippers, test bench parts or replacement components.
  • They are even used in the aerospace industry – for example in lightweight structural components, cable holders or devices for the assembly process.

Thanks to the combination of high dimensional accuracy, excellent mechanical strength and efficient production processes, High Speed Sintering and Multi Jet Fusion offer ideal conditions for modern, digital production. Both one-off productions and small and medium series can be realized economically – with a high degree of design freedom and reproducible quality.

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