The process of thermoplastic extrusion

The process of thermoplastic extrusion

19 Novembre 2019
The process of thermoplastic extrusion

Plastic extrusion is a high-volume manufacturing process in which raw plastic is melted and formed into a continuous profile. It works with metals and plastic materials.

Let’s go deeper in the process:

The thermoplastic material is melted and pushed through an extrusion line by a die, starting from a head which has the same shape as the profiles you want to produce. The profile is then cooled, calibrated and cut in order to give it the needed shape.

We consider the extrusion as a 4 phase-process:

1. Plastic granules are loaded into a hopper and then fed into an extruder. The material is moved through the chamber by a revolving screw.

2. Not all materials have the same properties, so the raw material is processed by a heating temperature specific to the type of raw material being passed through. At the end of the heated chamber, the molten plastic is forced through a small opening called a die to form the shape of the finished product.

3. As the plastic is extruded from the die, it is fed onto a conveyor belt for cooling, which can happen by air or water. Consistency in this flow is critical to achieving an end product with integrity.

4. We can summarize the conclusion of this process with our slogan: “You need it, we extrude it!”, as we are going to extrude anything you have in mind.

Covre Manifatture’s main activity is extruding technical profiles by using thermopolymers.

You can have a look at some of our extruded technical profiles here: