Multi-material injection molding is a fancy way of making things out of more than one kind of material. It's like building a sandwich with different ingredients. Imagine if you wanted to make a toy car with wheels, a body, and windows.
Now, instead of making each part separately and sticking them together, you can use multi-material injection molding. To do that, you use a machine called an injection molding machine that is a bit like a big oven. You put in raw materials, like plastic or rubber, and heat them up until they melt.
Then, the hot stuff is pressed or injected into a mold in the shape of the car parts. The mold has different sections to create each part of the car. Using multi-material injection molding, you can use different kinds of plastic or rubber at once to create each part, for example, using a hard material for the car body and a softer material for the wheels.
Once the materials have cooled and hardened, you take the mold apart, and the toy car parts are ready to be put together. This way, you can make more complex toys, gadgets, or even car parts faster and more easily, using various materials to make the product more functional or fashionable.