The features
Coex films
Coextrusion technology (coextrusion) in films refers to a manufacturing process in which multiple layers of different materials or material compositions are extruded and bonded together simultaneously to create a composite film with improved properties. Corpalin® VCI films from CORPAC are manufactured exclusively in coextruded quality. Upon special customer request, we also manufacture mono-films that work on both sides. Some key features of coextrusion films are as follows:
- Multilayer: Coex technology allows VCI films to be produced with multiple polyethylene layers. This modular system of multiple layers, varying layer thicknesses, and different material compositions allows for the control of specific properties such as water vapor barrier, strength, elongation, or optical surface properties.
- Use of recycled materials: sustainability plays a major role in VCI films. Recycled materials can be incorporated into the various layers in varying amounts. The VCI carrier layer in Corpalin® VCI films is always manufactured from virgin material.
- Optimized properties: Each layer in a coextruded film can be specifically tailored to enhance desired properties. This makes it possible to individually address customer requirements and optimize VCI films for their corrosion protection properties.
The advantages
Coex films with VCI active ingredient
Corpac Corpalin® VCI films act exclusively on the packaged component. The outer layer is made of pure polyethylene. Monolayer films, on the other hand, are often used as intermediate layers, as the VCI active ingredient must act in both directions. The requirements of TRGS 615 can be fully met with COEX films.
- VCI active ingredient only leaks outward, toward the component. There is no loss to the outside.
- Users have minimal contact with VCI ingredients with coextruded film. In contrast, with mono-film, contact with VCI is almost unavoidable.
- Use of recycled materials only in the middle and/or outer layer.
- Consistently high mechanical properties even over time.
