Injection Molding Service in China
Publish Time: 2020-01-22 Origin: Site
Injection Molding Service
Custom injection molded parts made by Shunho plastic solutions for engineers for low volume runs and production.
Custom mold & plastic parts, Rapid tooling
Our injection molding capabilities
Our network of Manufacturing gives you easy access to diverse capabilities to serve all your manufacturing needs.
| Name | Description |
|---|---|
| Rapid tooling | Molds with aluminum inserts with a life time of up to 20,000 runs. Machined in typically 2-3 weeks. |
| Production tooling | Traditional hard molds, machined in typically 4-5 weeks. |
| Single cavity molds | Molds containing only one cavity, producing one unit per run. |
| Molds with side-action cores | Cores slide out of the part from the side before it is ejected from the mold. This allows for undercuts to be molded. |
| Multi-cavity molds | Multiple identical cavities are machined into the mold tool. This allows for more parts to be produced per shot, minimizing the unit costs. |
| Family Molds | Several parts are designed into the same mold tool. This allows for the minimization of tooling costs. |
| Insert molding | Inserts are placed into the mold and molding occurs around them. This allows for inserts such as helicoils to be molded in your design. |
| Overmolding | Premade parts are placed into the mold to mold over them. This allows for multi-material injection molding. |
Our injection molding service
Our injection molding service can move from prototyping to end-part production.
| Name | Description |
| Minimum order quantity | 100 runs |
| Mold material | Tool Steel P20, Carbon Steel S50C, Aluminum |
| Mold types | Rapid tooling, production tooling |
| Mold storage | Minimum 2 years |
| Mold lead time | 2-3 weeks (Rapid tool), 4-5 weeks (Production tool) |
| Quality assurance | Inspection reports included, full dimensional report and material certifications available upon request. |
| Design verification program | Similar to First Article Inspection, you will receive 2 sets of parts upon the machining of the mold to test fit before continuing with full production. |
| Mold remachining | We can remachine the molds should any changes be required, changes to be reviewed on a case by case basis. |
| Additional technical support | Dedicated Shunho Plastic Solutions Mechanical Engineer for technical support. |
Available materials for plastic injection molding
All thermoplastics can be injection molded. Some thermosets and liquid silicones are also compatible with the injection molding process.
ABS, Nylon (PA 6), PC/ABS, Polyurethane (PU), Acrylic (PMMA), Polypropylene (PP), Polystyrene (PS), Polycarbonate (PC), Polyvinyl chloride (PVC) and POM (Acetal/Delrin).
Available surface finishes for injection molding
Injection molded parts are not usually post-processed, but the mold itself can be finished to affect the surface finish of the molded part.
This way aesthetic needs or technical requirements can be achieved.
| Name | SPI Standard | Description |
| Glossy | A-1, A-2, A-3 | The mold is smoothed and then polished with a diamond buff, resulting in parts with a mirror-like finish. |
| Semi-gloss | B-1, B-2, B-3 | The mold is smoothed with fine grit sandpaper, resulting in parts with a fine surface finish. |
| Matte | C-1, C-2, C-3 | The mold is smoothed using fine stone powder, removing all machining marks. |
| Textured finish | D-1, D-2, D-3 | The mold is first smoothed with fine stone powder and then sandblasted, resulting in a textured surface. |
| As-machined finish | The mold is finished to the machinist's discretion. Tool marks may be visible. |
For a detailed description of the SPI standardstake a look here.