What Is a Injection Plastic Mold?

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Injection plastic mold generally refers to plastic injection molding. This process is used to create plastic parts by injecting molten plastic into a metallic mold. After the plastic cools, the mold is opened, and the newly formed plastic part is released.


Injection plastic mold generally refers to plastic injection molding. This process is used to create plastic parts by injecting molten plastic into a metallic mold. After the plastic cools, the mold is opened, and the newly formed plastic part is released.

Common uses of plastic injection molding

Injection molding is an ideal solution for a number of manufacturing challenges. From prototyping to mass production, many of the world’s most commonly used plastic parts are created using injection molding. Things like keyboards, phone casing, and bottle caps are all created using different types of plastic molding.

One of the biggest advantages offered by the process is its unbeatable price per unit. After the initial investment to design and create the mold, parts can be manufactured at a price and speed unrivaled by other methods.

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The cost of injection molding

An injection mold can cost anywhere from $1,000 up to $80,000 or more, but the average cost is typically $10-$20,000. The most important factor when considering the total cost of a project is always going to be the return on investment (ROI). That return increases based on the number of parts being created. In other words, the bigger your project, the quicker you recoup the upfront cost of the mold. The main factors that will determine your injection molding project cost include:

Plastic Materials Used in Injection Molding

The most commonly used plastic materials for manufacturing are polypropylene, polyethylene, PVC, and acrylonitrile butadiene styrene (ABS). Because plastic materials can be selected to impart different physical properties, It’s important to understand which materials should be used, depending on the application of your product. For instance, some materials are temperature resistant while others are more durable. No matter the job, there’s a plastic that can help do it better.

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