zPMMA Translucent (UniZ) View larger

zPMMA Translucent (UniZ)


Uniz Technology

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Valid mechanical properties to end pieces thanks to its rigidity, high tensile and flexural modulus.

Every engineer, architect, artist or person who designs and manufactures any type of piece has been in the situation of needing to create pieces with a high translucence, the closest thing to a transparent finish. Just for this application UniZ has the zPMMA resin.

PMMA or methacrylate belongs to the category of engineering plastics, a plastic with high impact resistance, lightweight, good thermal insulation, chemical resistance and 93% transparency. There are other similar materials, such as polycarbonate (PC) and polystyrene (PS) but methacrylate has a great resistance to weathering and scratching, qualities that lead to this plastic to be used in countless applications: car headlights, lighting , construction, protection and optics.

The LED-LCD technology used by UniZ joins the other two technologies of 3D resin priniters already known, SLA and DLP. Its operation is similar to DLP, solidifying each layer in a single beam of light, but in the case of 3D LED-LCD printers, a set of LEDs with a wavelength of 405 nm illuminates an LCD screen that lets the beam pass through of light with the shape of the layer that is being manufactured.

The resin zPMMA presents valid mechanical properties to manufacture final pieces thanks to its rigidity, high modulus of traction and bending. These properties combined with the high percentage of translucency that can be achieved with this resin, facilitates the creation of elements, regardless of the geometry, on which it is important to monitor what happens inside. For example: bottles, ducts, casings, etc.

Transparent application zPMMA

Image 1: Transparent application zPMMA. Source: UniZ

This translucent resin increases its mechanical strength when cured with a wavelength of 405 nm at 25°C for 10 minutes, thus achieving high values of flexural strength (Flexion module: 1988.4 MPa). The curing also affects the color of the piece, gained a soft yellow tone.

Bottle with cured ZPMMA resin finish

Image 2: Bottle with cured ZPMMA resin finish. Source: UniZ

The bottle of this UV resin has a volume of 500 ml and a system of operation by suction. This system, combined with the pump of the SLASH 3D resin printer, allows to discharge and load the resin in the bottle, which is very useful when storing the resin. It is recommended to store the resin in the bottle if a time of non-operation of more than three days is estimated, for that simply press the button to load the bottle in the rolling software until the tank is without resin, place the stopper in the aeration hole and remove the bottle. To complete the cycle, it is necessary to clean the circuit with the cleaning bottle with isopropyl alcohol inside.

Botella de limpieza

Image 3: Clean bottle. Source: UniZ
Impact strength (KJ/m2) 1.039
Elongation at break (%) 23.4
Tensile strength (MPa) 40
Tensile modulus (MPa) 327
Flexural strength (MPa) 51
Flexural modulus (MPa) 1970
Machinable Machinable
Translucent Translucent
Lightweight Lightweight
Moisture resistance Moisture resistance
Chemical resistance Chemical resistance
Hide color variations (Hide color variations)

Once an impression is finished, the piece should be removed from the base with the metal spatula that is included with the printer. Then the piece is immersed in IPA for 5-15 minutes to remove the uncured resin from the outer walls of the piece. After that time, pressurized air must be applied on the piece until it is completely dry. To achieve the maximum properties that the zABS resin can provide, it is necessary to cure the resin for 10 minutes in a curing center (Form Cure) having a wavelength of 405 nm.

Before removing parts from the manufacturing base, the user must be equipped with a series of safety measures. It is recommended the use of gloves to prevent the resin and alcohol from coming into contact with the skin, it is also crucial to use safety glasses for the drops that may originate during the washing of the pieces.

General information
Manufacturer Uniz (San Diego, USA)
Technology  LCD
Material Photopolymer
Wavelength UV 405 nm
Format 500 ml
Color Translucent (uncured)
Compatible 3D printers Slash+, Slash+ UDP, Slash Pro, Slash Pro UDP, Slash DJ2
Print settings
Layer height 10-25-50-75-100 microns 
Exposure Time Although the values ​​can be modified, it is not necessary to configure the printing parameters in 3D Uniz printers because the software has the ideal values ​​for each type of resin and layer height.
Off time
Lifting height
Bottom exposure
Bottom layers
Curing and washing properties
Washing time 10 min
Curing time 10 min
Curing temperature 25ºC
Mechanical properties (without curing / with curing)
Izod impact strength (ASTM D 256-10) 10.39 J/m / 4.89 J/m
Charpy impact strength -
Elongation at break (ASTM D 638-14) 23.42% / 17.85%
Tensile strength (ASTM D 638-14) 25.84 MPa / 40.25 MPa
Tensile Modulus (ASTM D 638-14) 180.35 MPa / 327. MPa
Flexural strength (ASTM D 790-15) 23.41 MPa / 51.84 MPa
Flexural modulus (ASTM D 790-15) 860.75 MPa/ 1970.74 MPa
Surface hardness -
Thermal properties
Softening temperature -
Additional Information
Lifetime (since manufacturing) 12 months
HS Code 2916.1

* The typical values detailed in this table should be considered as a reference. Actual values may vary depending on the 3D printer model used, part design and printing conditions. We recommend confirming the results and final properties with own tests. For more information you should consult the technical data sheet of the product.

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