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Edit 8 types of Injection Molds Examining Various Categories and Features

Injection molds are a crucial component in the production of plastic parts and products. They are designed to shape liquid plastic into a desired shape and size, and are used in a wide range of industries, including automotive, medical, and consumer products. There are several different types of injection molds, each with their own unique features and applications.

1. Single-Cavity Molds

As the name suggests, these molds have a single cavity, or impression, and are used to produce a single part at a time. They are typically used for small, simple parts that do not require a high production rate.


Single-Cavity Molds

2. Multi-Cavity Molds

These molds have multiple cavities, allowing for the production of multiple parts at once. They are commonly used for larger and more complex parts, and are particularly useful for high-volume production runs.


Multi-Cavity Molds 

3. Stack Molds

Stack molds are multi-cavity molds that consist of two or more mold halves stacked on top of each other. Each half of the mold contains one or more cavities, and the molds are designed to fit together tightly to create a single, cohesive unit. Stack molds are highly efficient and can be used to produce a large number of parts at once.


Stack Molds

4. Hot Runner Molds

Hot runner molds are designed to inject molten plastic into the mold without the need for a separate injection point. This allows for more efficient production and a higher quality finish on the finished part.


Hot Runner Molds:

5. Cold Runner Molds

Cold runner molds use a separate injection point to inject the molten plastic into the mold. This method can be more cost-effective than a hot runner mold, but may require additional steps in the production process to remove the runner material.


Cold Runner Molds:

6. Unscrewing Molds

Unscrewing molds are used to produce parts that have threads, such as a screw or a bolt. They are designed to separate into two or more pieces, allowing for easy removal of the finished part.


Unscrewing Molds

7. Two-Shot Molds

Two-shot molds allow for the injection of two different types of plastic into the same mold. This allows for the production of parts with multiple colors or materials, such as a hard plastic outer shell and a soft rubber grip.


Two-Shot Molds:

8. Overmolding Molds

Overmolding molds are used to produce parts with a soft-touch or rubberized surface. They are used to produce parts that have a hard plastic shell with a softer, rubber-like surface.


In conclusion, there are several different types of injection molds, each with their own unique features and applications. The type of mold that is best suited for a particular application will depend on the size, complexity, and material of the part, as well as the production volume. By understanding the characteristics of different types of injection molds, manufacturers can make an informed decision about which type of mold is best for their specific application, if you need any help regarding to chose the best mold for your project, please feel free to contact us, our engineer is ready to help, or you can check our injection molding service page for further detail about our injection molding service. 

Post time: Jan-19-2023

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