Plasticos.comPlastic Information For Professionals
Injection Molding
Injection molding is a process whereby plastic products are by heating plastic pellets and injected into a mold under pressure. In the mold, the plastic cools and solidifies into the final product. Molds typically consist of 2 plates that are held together during the injection and are pulled apart after the product has cooled. This process is used to create an unbelievably wide variety of products ranging from electronics components, automobile dashboards, medical devices, toys, and tools. Injection molding is also frequently used for custom projects and prototyping.
When considering your injection molding project, geometry, material, volume, surface finish, and lead time all differ depending on the process that you use. Here are some suggestions for your injection molding design:
- It is a good idea to keep a constant wall thinckess
- Ribs and other supportive structures are helpful additions that can increase the strength of your part and reduce its cost
- Fillet or round sharp edges and corners to avoid stress concentration points
- Finished products with at least a 2 degree taper to thee sides release more easily from the mold, reducing machinery downtime
- Lighter colors help hide mold flow discoloration better than dark colors
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