Multi-Jet Printing (MJP)

MJP involves Jetting a photopolymer that combines the techniques used in Inkjet 3D Printing (3DP) and Stereolithography (SLA). A series of inkjet print heads deposit tiny drops of build material and support material to form each layer of a part. The build material is a liquid acrylate-based photopolymer that is cured by a UV lamp after each layer is deposited. The support material is a wax material that is melted away in an oven after the part build is completed.

In addition, new MJP technologies allow the mixing of hard and soft materials or different colors in the same build. This allows the user to create dual material parts to simulate things like “overmolding” or part that has clear and black colors. In addition, flexible parts can be made with a user selected durometer value as well.

Benefits of MJP 3D Printing

  • Very high resolution – layers down to 16 microns (.016mm / .0006”)
  • Melt away supports allows for complex shapes
  • Very good surface finish
  • Ability to build large parts – up to 21.5 x 15.5 x 12 inches
  • Digital materials available to mix hard & soft materials in the same part
  • Ability to build flexible parts at specific durometers
  • Can have parts with two colors integrated into the same part (clear and black for example)

Applications for MJP 3D printing

  • Appearance models
  • Prototypes
  • End use parts
  • Clear parts
  • Medical models
  • Fixtures
  • Injection molds
  • Casting patterns