What is Photopolymer Jetting (PolyJet)?

Photopolymer jetting (or PolyJet) builds prototypes by jetting liquid photopolymer resin from ink-jet style heads. The resin is sprayed from the moving heads,

and only the amount of material needed is used. UV light is simultaneously emitted from the head, which cures each layer of resin immediately after it is applied. The process produces excellent surface finish and feature detail. Photopolymer jetting is used primarily to check form and fit, and can handle limited functional tests due to the limited strength of photopolymer resins.

  This process offers the unique ability to create prototypes with more than one type of material. For instance a toothbrush prototype could be composed with a rigid shaft with a rubber-like over-molding for grip. The process works with a variety of proprietary photopolymer resins as opposed to production materials. A tradeoff with this technology is that exposure to ambient heat, humidity or sunlight can cause dimensional change that can affect tolerance. The process is faster and cleaner than the traditional vat and laser photo-polymer processes.

 

 

 

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