Plastic injection molding offers a fast and efficient way to produce plastic parts. Also known simply as injection molding, it involves injecting heated plastic into a mold cavity via a plunger. As the molten plastic begins to cool, it will solidify. The solid casting can then be ejected. There’s two-shot plastic injection molding, however, that goes one step further. What is two-shot plastic injection molding exactly, and how does it work?
Overview of Two-Shot Plastic Injection Molding
Two-shot plastic injection molding is a molding process that’s characterized by the use of two separate materials. Also known as double-shot plastic injection molding, it’s used to create plastic parts — just like standard plastic injection molding. The difference is that two-shot plastic injection molding uses two separate materials.
How Two-Shot Plastic Injection Molding Works
You might be wondering how two-shot plastic injection molding works. While there are different ways to perform it, they all revolve around the use of two separate materials. That’s why it’s known as “two-shot plastic injection molding.”
During a typical two-shot plastic injection molding process, the first material is forced into the mold cavity. After it has cooled and solidified, it’s removed and transferred to another mold. The second material is then forced into this new mold. Like with the first material, it’s allowed to cool and solidify.
Benefits of Two-Shot Plastic Injection Molding
When compared to traditional single-shot plastic injection molding, two-shot plastic injection molding offers several benefits. For starters, it supports complex designs that aren’t possible with single-shot plastic injection molding. All two-shot plastic injection molding processes include two separate materials. Therefore, it can be used to create multicolored parts in a variety of designs.
Two-shot plastic injection molding is also fast and efficient. It doesn’t require any post-molding finishing process. Once the final mold has been filled with the respective material and allowed to cool, the casting can be removed. Many manufacturers choose two-shot plastic injection molding because of its fast and efficient properties.
Plastic injection molding can be classified as single shot or two shot depending on how many materials are used. Single-shot plastic injection molding uses a single material, whereas two-shot plastic injection molding uses two materials. They both involve forcing heated plastic into a mold cavity. Two-shot plastic injection molding simply involves the use of two separate types of materials or plastics.