Durus (Polypropylene like)
Simulated Polypropylene was created to enable the production of prototypes that simulate the mechanical properties of Polypropylene. Unlike direct printing of Polypropylene (e.g. by SLS or FDM), this Polyjet material enables high-resolution, high-accuracy 3D printed prototypes. The material is durable and is a perfect choice for demanding applications like living hinges or snap fits.
342 x 342 x 200 mm
2 – 5 business days
± 0,15% with a lower limit of 0,2 mm
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3D printing of Polypropylene remains a challenge, laser sintered or extruded (FDM-printed) Polypropylene have their limitations in terms of density (laser sintering), accuracy (FDM) and surface quality (both technologies). An excellent way to overcome these issues for prototyping is using Simulated Polypropylene, a material specifically created to mimic the mechanical properties of the ‘original’. The material is durable and can be used for typical polypropylene applications like living hinges, snap fits or all other parts, where flexibility is required.
- Pricing for Polyjet is complex, for Simulated Polypropylene, please request a manual quote.
- Material changes: When changing a material on the machine, a significant amount of material is discarded by cleaning the print heads and pipes.
- Material consumption: Polyjet is the 3D printing technology with the largest material cost among all plastics. Furthermore, for technological reasons, more material is used than the part requires, sometimes the material consumption is up to 8 times higher than the final part requires (e.g. 800 g material for a 100 g part).
Look & Feel
- The surfaces are smooth, compared to most other 3D printing technologies. However, layer lines can be seen in z-axis, as well as in x-y axis. Only this technology has x-y lines, which are a result from the print head scraping some material from the surface while printing.
- Surfaces without support material are glossy, surfaces with support material are rougher and somewhat dull.
- Very flexible.
- Water can cause warping of the material, contact with water should therefore be avoided.
40 – 50%
1.000 – 1.200 MPa
37 – 42°C
74 – 78D
The minimum wall thickness should be no less than 0,7 mm.
Cavities can be realized as long as there is a min. 10 mm diameter escape hole to remove excess material. The support is a waxy material which needs to be scraped of. If the escape hole is too small, we cannot access the cavity and support material will remain inside the cavity. Accordingly, for larger cavities, leave larger escape holes.
In case your file contains several shells, make sure to keep a clearance gap of min. 0,5 mm between the shells, otherwise they could be fused together.
The minimal details size should not be smaller than 0,5 mm. The detail resolution of the material is a little less than Vero, but outperforms most other rapid prototyping materials.
Interlocking parts can be printed as long as there is a clearance gap of at least 0.5 mm and there is sufficient space to remove the support material.
The maximum size of the part cannot exceed 342 x 342 x 200 mm.
- Remove support material
- Bead blasting
In Polyjet 3D printing a print head is suspended above a build platform. The print head contains several nozzles as well as a UV lamp. During printing, the print head will sweep over the platform, ejecting tiny drops of a light-curing polymer on to the printing platform, and then almost immediately curing it with UV light. The platform then lowers between 16-32 microns (depending on the machine and setting) and the next layer of polymer is applied to the already hardened previous layer. This process continues until the object is completely 3D-printed. Overhanging sections are stabilized during the print by support material, which need to be removed after the print is completed.
Multijet Modeling (aka Polyjet) Printing Process. Quelle: Youtube.com / 3D-Systems