Coextrusion fuses multiple layers of polymer or other materials into a single continuous profile or film. Multiple extruders feed different melts into a single die head, allowing manufacturers to combine the properties of different plastics, like a rigid core with a soft-touch outer layer. It is heavily used in packaging, tubing, and weatherstripping.
Heard on the job
The weather seal uses coextrusion to give us a hard mounting track and a flexible lip in one pass.
Also heard as
- coex