What COEX means
Coextrusion forms multiple polymer layers together. Supporting layers provide structure while an EVOH layer can add oxygen-barrier performance.
Why the layer structure matters
Layer materials, thickness distribution, tie layers and product-contact construction are engineered around the formulation and manufacturing route.
Where EVOH may help
Selected agrochemicals, industrial chemicals, food ingredients and sensitive liquids may benefit when oxygen ingress or permeation is a validated concern.
What EVOH does not guarantee
A barrier layer does not guarantee chemical compatibility, shelf life or universal recyclability. The closure and complete package remain part of performance.
How to prepare a project brief
Provide formulation information, target volume, storage period, temperature range, barrier objective, annual demand and destination requirements.