Injection molding is a manufacturing process for produc […]
Injection molding is a manufacturing process for producing parts by injecting material into a closed mold. Injection molding can be performed with a host of materials, including metals, glasses and – in our case – thermoset elastomers and polymers. Parts to be injection molded must be carefully designed to facilitate the molding process. The material used for the part, the desired shape and features of the part, the material and design of the mold, and the properties of the molding machine must all be taken into account. It is essential to consider the number of parts required and the life of the tooling. This is because injection tooling and presses are more complex, and therefore more expensive to set up and run, than other molding techniques. Therefore, small batches of parts may not be cost-effective if manufactured by injection molding.
Advantages of injection molding
Low labor costs.
Multiple materials can be used at the same time.
It can be used to produce very small parts.
Leaves little post-production scrap.
Ability to include inserts.
Good color control.
Good product consistency.
Reduced requirements for finishing.
Good dimensional control.
Disadvantages of injection molding
High initial tooling and machinery cost.
Part design restrictions.
Small runs of parts can be costly