Stratasys J750/J735/J720 User Guide
3 Introducing the 3D Printer
DOC-08040 Rev. R
3-5
Printing Materials
Stratasys J750/J735/J720 printers produce models by jetting thin layers of
printing materials on the build tray, until the complete model is formed. Two types
of material are used in this process:
•
Model
material—which makes up the finished model
•
Support
material—which fills gaps and spaces in the model during printing,
and is removed after printing
For up-to-date information about PolyJet printing materials and their
properties, go to
www.stratasys.com/materials/polyjet
Storage
Materials used for printing models with J750/J735/J720 printers are made of
resins, which are composed of reactive monomers and oligomers. Although
printing materials are supplied in sealed, UV-proof cartridges, care must be
taken when storing and handling them. Follow these guidelines to protect
operators and the environment, and to ensure optimum results.
• To ensure product stability, do not allow these materials to come into contact
with metal. Plastics made from monomer-soluble substances (such as
polystyrene or polyvinyl chloride) are not suitable for storing PolyJet printing
materials.
• When not in use, keep material cartridges tightly sealed to prevent
contamination, the effects of exposure to UV radiation, and accidental
spillage.
• Store material cartridges indoors, in a dry area with adequate ventilation,
between 15–25 degrees Celsius (59-77 degrees Fahrenheit). If exposed to
heat or flames, cartridges might burst or ignite.
• Signs of premature polymerization in material cartridges include bulging,
leaking, the emission of heat, and unusual odor. Exposure to heat can cause
resin to gel in the cartridges.
• Make sure that material cartridges are stored in accordance with all local
regulations and other applicable requirements.
Shelf Life
Materials used for producing models have a limited shelf life. The expiry date on
the label is valid when properly stored in an undamaged, unopened cartridge.
Always rotate your stock, so that the cartridge with the earliest date is used first.
Exposure to Light
If printing materials are not in their sealed cartridges, make sure to shield them
from sunlight and other sources of UV radiation, such as fluorescent and