PolyJet Technology, 3D Printing Materials

PolyJet Materials: A Range of Possibilities

By Emmy Wolfe on June 5, 2018

Full headphone model was printed in one pieceMaterials are the building blocks of every model, literally. While your design is being printed, each layer stacks upon each other, building it up, until your print is complete. Stratasys has more color options and unmatched product realism than any other 3D printer on the market today. Keep readying to discover the different material properties that can match your company's needs. 

Stratasys PolyJet Materials

Base Resins

PolyJet technology has 24 base resins available. This refers to unblended material, straight from the cartridge. With your typical PolyJet machine, base resins can be used alone, in pairs or in trios. But, with the new Stratasys J735 and J750 you can blend even more together to create composite Digital Materials. These are best used for presentation and display models, form and fit prototypes and patterns. 

Rigid Opaque 

As part of the Vero family, Rigid Opaques make up seven of the materials available, and are the most commonly used material for PolyJet 3D printers. The photopolymers are multi-purpose materials and are great for visual models, engineering prototypes, product assemblies, light functional testing, patterns and RTV molding patterns. They are stronger and stiffer when compared to industry averages for tensile strength, flex strength and flex modulus. In addition, Rigid Opaque photopolymers come in seven hues, including blue, white, black, gray, cyan, magenta and yellow. 

Transparent / Translucent

Lenses created from VeroClear Material There are two rigid materials with translucency or transparency: RGD720 and VeroClear. 

RGD720: Rigid Translucency - This is the original, multi-purpose PolyJet material. With a slight amber tint, this material appears transparent when printed in thin walls. As the wall thickness increases, the light transmission decreases. This material is used for form and fit evaluation of assemblies to visualize the placement and interface of internal components and features. 

VeroClear: Rigid Transparent - While this material has much in common with RGD720, it is the first in the lineup of PolyJet materials that has a correlation with commercial thermoplastics. It simulates PMMA (polymethyl methacrylate), or commonly known as acrylic or Plexiglas. VeroClear is used as an alternative to glass for lenses, clear covers, dispensers and light pipes for automotive, medical, electronics, signs and displays, sanitary ware and light fixtures. Its strength, stiffness, elongation and impact resistance values, plus its lower hear resistance make it the perfect material for these uses.

Simulated Polypropylene

PolyJet has two base resins that are semi-rigid, strong and tough: Durus and Rigur. Compared to Vero materials, these have nearly twice the impact resistance, three times the longation and twice the flexibility. Thanks to these properties, the materials are used for models and prototypes of containers, packaging, toys, battery cases, laboratory equipment, loudspeakers and automotive. They both are very useful when the prototypes have snap-fit components or living hinges. 

Rubber-Like

3D Printed Full-Color Multi-Material Athletic Shoe Tango and Agilus30 families simulate thermoplastic elastomers, with flexible, rubber-like qualities. They are typically used for visual, tactile and functional applications such as non-slip surfaces, soft-touch interfaces and sealing faces. PolyJet Rubber-Like material can be used for many applications, such as rubber surrounds, overmoldings, buttons, knobs, grips, gaskets, boot and hose assemblies and prototyping outsoles for footwear. 

Medical and Dental 

VeroGlaze Functional Dental VeneersStratasys is working on having something for everyone by expanding their material offerings beyond those intended for engineers and designers. They recognized the unique needs of the medical arts and created six materials specifically for these uses. These materials are almost identical to the Rigid Opaque, with the exception of nearly 50% greater stiffness. There are four materials for dental applications. 

VeroDent - When making dental models from patient scans or impressions, VeroDent is the perfect material. It has a natural peach tone.

VeroDentPlus - This material is also used for dental models, but in a dark beige rather than a peach color. It offers improvements in detail resolution and surface finish. 

VeroGlaze - VeroGlaze has an opaque, white color that is listed as an A2 in accordance with the Vita shade guide. The coloring and properties make this the ideal material for realistic veneer samples, allowing the patient and doctor to visualize prosthetic results before the procedure. 

Bio-Compatible - Used by both medical and dental professionals, this material is used when 3D printed parts have bodily contact. It has five approvals: cytotoxicity, genotoxicity, delayed type hypersensitivity, irritation and USP plastic class VI. These approvals allow Bio-Compatible material to be used for direct skin contact for over 30 days and short-term mucosal-membrane contact. 

Engineering Plastic Simulation 

3D printed part with high temperature material can withstand how fluidsThis material expands the application base further into functional testing and manufacturing tools. This category includes five materials, four of which are Digital ABS Plus, and the fifth is High Temperature, a material that can take the heat. The material has a 55° C higher heat deflection temperature (HDT) than any other PolyJet base resin. On top of the HDT, High Temperature also has 150 to 200 percent of the strength and rigidity of the average ABS values. 

Digital Materials 

A digital material is a composite created by simultaneous jetting up to six materials from the material portfolio of 24 base resins. With the ability to blend materials in specific concentrations and matrices, PolyJet technology offers a wide palette of properties and visual characteristics. 

Digital ABS Plus: Rigid, Tough and Opaque - This extends the simulation of engineering thermoplastics beyond the thermal resistance, toughness and transparency of High Temperature, Rigur and VeroClear. 

Rubber: Varying Flexibility - Combining rubber materials with Digital ABS Plus or Rigid Opaque expands the material properties drastically, allowing you to get the perfect properties for your design. From soft-touch with subtle color to un-rubber-like materials with 10 Shore A hardness values from 35 to 100, this material can cover a lot of bases. Plus, there are hundreds of digital material options for rubber. 

Colors and Tints: Product Realism - The ability to combine materials offers more than a range of material properties, it also offers a large palette of opaque colors and translucent tints. 

And now, Stratasys is introducing TWO new printers: the Stratasys J735 and J750. These printers have new PolyJet print heads, run six base resins simultaneously, print more than 360,000 colors, offer fine layers and are the fastest multi-material 3D printers giving them high efficiency and lower cost per part.

Want to learn more about PolyJet materials and the Stratasys J735 and J750? Download our whitepaper to get all the details! 

Download Whitepaper