Discover injection molding solutions
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Injection molding is a manufacturing process that consists of filling a metal mold cavity with liquid plastic resin, which then cools and forms a plastic part.
It’s most often used for the manufacturing plastic parts at scale due to its low material waste and low cost per part. It’s an ideal manufacturing process for industries like medical devices, consumer products, and automotive.
Plastic Molding Capabilities
Our basic guidelines for plastic injection molding include important design considerations to help improve part moldability, enhance cosmetic appearance, and reduce overall production time.
| US | Metric | |
| Size | 18.9 in. x 29.6 in. x 8 in. | 480mm x 751mm x 203mm |
| Volume | 59 cu. in. | 966,837 cu. mm |
| Depth | 4 in. from parting line | 101mm from parting line |
| Up to 8 in. if parting line can pass through the middle of the part | Up to 203.2mm if the parting line can pass through the middle of the part | |
| Projected Mold Area | 175 sq. in. | 112,903 sq. mm |
Tolerances: Typically, Protolabs can maintain a machining tolerance of +/- 0.003 in. (0.08mm) with an included resin tolerance that can be greater than but no less than +/- 0.002 in./in. (0.002mm/mm).
Plastics Materials
We have wide selection of more than 100 thermoplastic and thermoset materials. And if you’re looking for alternative material options, check out our guide to resin substitutes for ABS, PC, PP, and other commonly molded plastics.
Surface Finish Options
Draft angle requirements will vary by requested finish. Industry standard Mold-Tech finishes are also available.
| Finish | Description |
|---|---|
| PM-F0 | non-cosmetic, finish to Protolabs’ discretion |
| PM-F1 | low-cosmetic, most toolmarks removed |
| PM-F2 | non-cosmetic, EDM permissible |
| SPI-C1 | 600 grit stone, 10-12 Ra |
| PM-T1 | SPI-C1 + light bead blast |
| PM-T2 | SPI-C1 + medium bead blast |
| SPI-B1 | 600 grit paper, 2-3 Ra |
| SPI-A2 | grade #2 diamond buff, 1-2 Ra |
Quality Inspections and Finishing Options for Custom Molded Parts
Depending on your application’s requirements, you can choose from the following when requesting an injection molding quote.
Quality Inspections available for on-demand manufacturing orders
- Designing for Manufacturability Feedback (DFM)
- Scientific molding process development report
- In-process CMM inspection and machine monitoring
- First article inspection (FAI) and process capability report with GD&T
| Mold Texturing (Mold Tech Surface Finishes) Threaded Inserts Pad Printing Laser Engraving Component Assembly |
Discover new possibilities
You can directly send the following data formats: Catia, NX, STEP, IGES, PRT, SLDPRT, DXF, and DWG.
We can convert CAD data formats so they are usable for production. Email:service@goldenrapid.com
Contact us
Get instant quotes for cost-effective solutions : From confidential design-to-product services to fast delivery, we empower innovators with precision and speed. Contact us now!
Phone: +86 0592 373 1111
E-mail: service@goldenrapid.com