Plastic coextrusion consists in extruding two different materials to produce a single tube or profile.
Each material contributes its own properties to the finished product.
The most common form of coextrusion is the extrusion of a rigid structural part and a flexible seal.
Coextrusion can also combine two different colours or one technical material and one cheap material.
To obtain a coextruded tube or profile, two extrusion machines are linked, each one extrudes one material.
A common tool is placed at the exit of each machine to enable the two different materials to be united and welded together to form a single tube or profile.
Examples of use:
- Commercial furniture : Flexible hinge gate profile
- Sport and leisure : Aerodynamic profile for bike hub
- Construction : Conductive two-layer granules
PVC, PA 11, PEBAX, etc.