As the packaging market moves away from layers of oriented polyester (OPET) to create heat resistant packaging, customers use TOPAS® COC to deliver the performance they need. TOPAS® cyclic olefin polymer (COC) is available in grades with glass transition temperatures ranging from 65 to 178°C. Key packaging grades:
As an olefin, TOPAS polymer blends with polyethylene or polypropylene to boost heat resistance. Because TOPAS resin is amorphous, it maintains stiffness at elevated temperature far better than semicrystalline plastics such as PE or PP. TOPAS COC maintains high stiffness up to temperatures within 10 to 15°C of its Tg, a level at which semicrystalline materials will have as little as 20% remaining stiffness. Commercial uses include form-fill-seal structures, all-olefin sealant and flexible pouch films, and more. Below is a chart demonstrating one way that TOPAS® COC can be used to create heat resistant packaging.
For more information on TOPAS resin for Packaging, see our Packaging Brochure and Packaging Market pages. Check out our parent company Polyplastics for more high performance polymers.