Mold Injection is still a relatively new type of technology, but it has been around long enough for plastic injection mold making methods to have been perfected by experts. It is a field that will continue to grow and change, but the basics of plastic injection mold design will remain constant.
The process begins when plastic resin is placed into a sprue. The plastic is then heated so that it is melted by the time it reaches the end of the sprue and is injected into the plastic mold. The area between the sprue and the mold is tightly sealed at the nozzle so that the plastic does not go back into the sprue once the mold is full.
Plastic injection mold making can follow one of several different processes, with the primary difference being when the plastic is cooled. Each plastic injection mold design is unique because the parts and products all have different functions. The plastic used to make the final product may also be different depending on if a prototype is made before the final product. You can also select a different color so that the final product is multicolored, or that different parts can be easily identified based on their color. For example, screws can be made in various colors, making it easier for those assembling the final product to work more efficiently.
Over the years, plastic injection mold making will continue to change as new types of plastics are created and new methods are made to complete the process. Mold injection is one of the most efficient ways to mass produce parts and products because there is little room for variation when the process is properly implemented.