Urethane Casting Service
For Prototyping & Low Volume Manufacturing
Rigid and Flexible PU Materials
Production Grade Quality
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Production Quality at Low Volumes
This process is a quick, cost-effective way to produce 10-200 units with production-level quality. Typically, each silicone mold will produce 20 castings.
Complex Elastomeric Parts
Urethane casting is ideal for prototyping elastomeric parts such as complex gaskets and overmolds on rigid parts.
High Level of Detail
Urethane casting allows for almost limitless complexity, including sharp internal corners unachievable with CNC machining, and designs without draft or uniform wall-thickness that can’t be injection molded.
Our Manufacturing Ability
Built without expensive and time-consuming hard tooling, RpProto is one of the leading urethane casting companies, urethane casting process uses a 3D printed master pattern and silicone molds to deliver high-quality, short-run parts up to 30” long. The finished dimensions of urethane cast parts depend on the accuracy of the master model, part geometry, and casting material. In general, a shrinkage rate of + 0.15% is expected.
What is Urethane Casting
Urethane casting provides end-use, rigid plastic parts or rubber parts with production-level quality. Cast urethane parts are frequently used when color, surface quality, and toughness are required. Urethane molding is a perfect alternative for insert molding or overmolding in low volumes with diverse material choices. Polyurethane casting can also be used for bridge-tooling between a 3D printed rapid prototype and an injection molding with a balance of quality, cost, and time. Urethane cast parts can also be clear, color-matched, painted (including EMI shielding), have installed inserts, and even custom finished.
Urethane Casting Materials
Cast urethane parts are often compared to injection molding materials. For example, a stiff urethane cast part may be described as “polycarbonate-like,” and a more flexible plastic may be “polypropylene-like.” We group our urethane materials into general categories to help you make quicker decisions and get the best performance on your project. The list below describes the categories of materials and technical examples when selecting polyurethanes.
Rubber-Like
ABS-Like
PMMA-Like
HDPR-Like
Rubber-Like
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ABS-Like
ABS-Like
ABS-Like is a general purpose polyurethane plastic that simulates ABS thermoplastic. This material is a great choice for most product enclosures.
Applications:General purpose, product enclosures
PMMA-Like
PMMA-Like
Acrylic-Like is a stiff, transparent polyurethane plastic that simulates acrylic (PMMA). This material is great for see-through applications such as light pipes.
Applications:
Light pipes, see-through applications
| References | Description | Hardness (shore) | Strength （MPa） | Elongation (%) | Tg (°c) | Colour | |
|---|---|---|---|---|---|---|---|
| TRANSPARENT SYSTEM | |||||||
| Axson PX 522 HT | The same properties as PMMA, cristal PS, MABS. High transparency, Easy polishing, Good UV resistance. | 87D | 75MPa | 9% | 110°c | transparent | |
| Axson PX 521 HT | For crystal glass like parts. High transparency (water clear) , Easy polishing ,High reproduction accuracy . | 87D | 75MPa | 9% | 110°c | transparent | |
| AXSON UPX 5210 | For crystal glass like parts. High transparency, Easy polishing, High reproduction accuracy , Low shrinkage | 83D | 65 – 70 MPa | 15 – 20% | 80°c | transparent | |
| Axson PX 225 | Low viscosity for easy casting. Good impact and flexural resistance. Very easy coloring with all kind of pigments. | 80D | 70MPa | 15% | 80°c | transparent | |
HDPR-Like
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