Barrier and Scavenger Additives

Help protect packaged products, maintain package integrity, and support longer shelf life

Barrier and scavenger additives can help protect packaged products, maintain package integrity, and support longer shelf life. Depending on the packaging material and contents, these technologies can address different challenges, including acetaldehyde (AA), oxygen ingress, and solvent or reagent permeation. 

Three technologies, two substrates, one portfolio:

• Acetaldehyde Scavenging for PET → Control AA levels — a by-product of PET processing that can affect taste — without affecting container aesthetics or recyclability.
• Oxygen Scavenging for PET → Help reduce the risk of product quality degradation due to oxygen ingress, tailored to shelf life requirements.
• Solvent Barrier for HDPE → Cesa™ Solvent Barrier Technology is a non-PFAS blended barrier additive that slows reagent migration through the bottle wall, helping maintain package integrity in monolayer HDPE.

FAQ
What are barrier and scavenger additives and how do they work?
Barrier and scavenger additives are incorporated directly into packaging materials to help protect packaged products and extend shelf life. They work in three ways: acetaldehyde (AA) scavengers control AA levels that can affect taste in PET packaging; oxygen scavengers capture oxygen to help prevent product degradation; and solvent barrier additives slow reagent permeation through HDPE container walls. Learn more about solvent barrier technology →

How does Cesa™ Solvent Barrier Technology work in HDPE packaging?
Cesa™ Solvent Barrier Technology is a solid, non-PFAS blended barrier additive incorporated directly into HDPE during standard extrusion blow molding (EBM). The additive creates a tortuous path within the polymer matrix that slows reagent permeation through the container wall — delivering up to 10x reduction in solvent permeation vs. unmodified HDPE. It requires no specialized equipment or secondary treatment steps. Learn more →

What is a non-PFAS barrier additive?
"Non-PFAS" means the additive is formulated without intentionally added per- or polyfluoroalkyl substances. Cesa™ Solvent Barrier Technology for HDPE helps manufacturers meet tightening fluorochemical regulations without retooling extrusion blow molding lines — providing an alternative to fluorinated barrier treatments for monolayer HDPE packaging. Learn more about non-PFAS additives at Avient →