plastic profile extrusion die design

In the process of plastic profile extrusion, the molten polymer is passed through the die and takes on the shape of the die cavity. This die is responsible for shaping the thermoplastic and determines the product’s final dimensions and characteristics. As such an essential part of the process, it is crucial to make sure your plastic profile extrusion die design is right for your product.

Parts of the Plastic Profile Extrusion Die

There are various different parts of the plastic profile extrusion die that need to be taken into consideration during your design. There are three main parts that are critical to the plastic profile extrusion die design: the adapter plate, the transition plates, and the die plates.

Adapter Plate

The adapter plate attaches the die to the extrusion machines. It is designed with a counterbore on one side, which accommodates the breaker plate and allows the rotation of the polymer to be transformed into a longitudinal motion.

Transition Plates

Transition plates live up to their name and transition the polymer from the adapter plate inlet and adjust the shape of the material before it reaches the die plate. These plates are typically round, square, or rectangular in shape.

Die Plates

The die plates are responsible for the final shape of the product. The material passes through the die plates where it is given its final dimensions and surface finish as it exits the die.

Considerations in the Plastic Profile Extrusion Die Design Process

When designing the die you will be using in your plastic profile extrusion project, there are two primary considerations to make. Both the shape of your transition plates and the final design of your product will determine some of the other aspects of your plastic profile extrusion die design.

Shape of the Transition Plates

Because these plates move the polymer and adjust its shape, they must be designed properly for your project. If they are not designed properly, the polymer will not flow as expected and the shape of the final product will be incorrect or have deformities.

Part of this design includes the flow channels. These channels make sure the polymer makes it into each section of the die. When determining the shape of the transition plates, you must also consider the position and size of the flow channels to best create your product.

Design of Your Product

Understanding how your product is designed can help you create a die that will serve you properly. You will need to take into consideration the thermoplastic you will be using, the size and complexity of your part, and its wall thickness. Each of these characteristics will determine the size of your die, the flow channels, the shape of the transition plates, and more.

Trust Custom Profile With Your Plastic Profile Extrusion Die Designs

At Custom Profile, we have everything we need to create high-quality plastic extrusion tooling, including plastic profile extrusion die designs. Our in-house tooling development centers give us complete control over the quality of your dies and tooling and how long they take to create. We use CNC and wire EDM technology to meet the tight tolerances your tooling requires and ensure that your products are created to your exact specifications.

In addition to our tooling capabilities, we are also able to take on nearly all of your extrusion projects. Whether you are looking for tubing extrusion, co-extrusion, dual durometer co-extrusion, tri-extrusion, or crosshead extrusion, we are here to help. We have more than three decades of experience creating products in a wide range of industries, so you can trust us to get the job done right.

If you are ready to get started, contact our team today.