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Technology

Multi Jet Modeling (MJM)

In the polyjet process (also known as multi-jet modelling, MJM), liquid polymer is applied drop by drop and cured.

Installation space

  • 1000 x 800 x 500 mm

Applications

  • Model making (detailed models)
  • Automobile industry
  • Aircraft industry
  • Prototypes

Advantages

  • Very smooth surfaces, almost no layers
  • High resolution
  • Combination with other materials possible (multi-material printing is possible)

The Polyjet 3D printing process  or Multi Jet Modelling (MJM) uses a print head with multiple nozzles to apply small droplets of material onto a printing plate. The liquid polymer is immediately hardened by UV light allowing the desired components  to be produced layer by layer.  As the droplets that are applied are very small, very fine details can be reproduced.  Additionally the material melts before the curing process and the surface becomes very smooth. During printing overhanging components must be provided with support structures.

With the MJM 3D printing process, the desired parts can be printed directly in multiple colours when using multiple print heads. Translucent materials that allow light to pass through are also available. Due to the material application through small droplets, material and colour gradients are also possible.

Suitable materials

Agilus30

Rubber-like plastic

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Features:

  • Density [g/cm3] 1.14
  • Tensile strength [MPa] 2.6
  • Elongation at break [%] 200
  • Shore hardness 35A

Material Color:

  • Black

Advantages:

  • Similar characteristics to NRA & EPDM

This rubber-like plastic has a Shore hardness of 30A and is available in the basic colour black. The properties of Agilus 30 are similar to those of NBR and EPDM. It is mainly used in the medical field and in the aerospace industry.

 

Digital ABS

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Features:

  • Density [g/cm3] 1.17
  • Tensile strength [MPa] 60
  • E-modul [Gpa] 3
  • Flexural strength [MPa] 75
  • Flexural modulus [Gpa] 2.2
  • Impact resistance (Izod notched) [J/m] 115
  • Heat deflection temp @0.45MPa [°C] 58

  • Elongation at break [%] 40Shore hardness 85D

Advantages:

  • High temperature resistance
  • High level of detail
  • ABS in production quality
  • Suitable for snap connections & functional designs

DigitalABS is a plastic similar to standard ABS, but is processed using the MJM method. DigitalABS combines high temperature resistance with a high level of detail accuracy. This plastic is particularly suitable for functional designs with multi-material versatility. Another field of application is snap-fit connections at high or low temperatures.

Vero

Vero is a PolyJet printing material based on synthetic resin

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Features:

  • Density [g/cm3] 1.18
  • Tensile strength [MPa] 60
  • E-modul [Gpa] 3
  • Flexural strength [MPa] 70
  • Flexural modulus [Gpa] 2.5
  • Impact resistance (Izod notched) [J/m] 30
  • Heat deflection temp @0.45MPa [°C] 45
  • Elongation at break [%] 25Shore hardness 83D

Advantages:

  • Highly accurate components
  • Thin layers
  • Detailed surfaces

Vero is a PolyJet printing material based on synthetic resin. This material enables particularly accurate components, made of thin layers and with detailed surfaces.

VeroClear

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Features:

  • Density [g/cm3] 1.17
  • Tensile strength [MPa] 65
  • E-modul [Gpa] 3
  • Flexural strength [MPa] 110
  • Flexural modulus [Gpa] 3.2
  • Impact resistance (Izod notched) [J/m] 30
  • Heat deflection temp @0.45MPa [°C] 45
  • Elongation at break [%] 25Shore hardness 83D

Material Color:

  • Translucent

Advantages:

  • Detailed surfaces
  • Thin layer structure  
  • Acrylic-like properties

Vero Clear Transparent is a translucent material for PolyJet printing. This synthetic resin-based material combines detailed surfaces with a thin layer structure. Vero Clear Transparent has properties comparable to those of acrylic.

Note about material properties

Note: Please note that the listed values of the properties (e.g. tensile strength) refer to the properties of the material in an unprocessed state. Hoffmann AM can not guarantee the information below. In the printed state, the values may deviate from the specifications.

If a material in practice is pushed to the limits of the stated values, the component itself should be tested. If you have any questions, please do not hesitate to contact us.