Plastic Q&A - Common questions about plastic
We recieve a lot of questions about plastic and how we produce plastic profiles. Here we have answered some of the most common question. If you have further questions, you are welcome to contact us.
Can you extrude multiple raw materials into the same profile? add
Yes! Extruding several materials in the same profile is a common, but advanced process also called co-extrusion. At Primo we also do triple-extrusions on specialised machinery. The benefits are obvious. By extruding two or more raw materials in the same profile more properties can be added to the final product.
In co-extrusion productions lines two extruders are used to apply material into the die that forms the profile. It must be done with great care and precision in order to get the right amount of material.
The result is a profile with two different types of plastic. One can be stiff and good for assembly and the other part may be soft and useful for sealing purposes.
Co-extrusion can be used to apply a thin layer of an expensive polymer to resist weather on a more structural profile.
Co-extrusion is also a way of using low quality plastic, such a recycled plastic from mixed sources. With co-extrusions this type of plastic can be used as filler in profiles with a higher quality outer layer.
At Primo, co-extrusion is often used for lighting profiles and for window- and door profiles. Read more here: