Greatview Aluminum-Free Packaging: Sustainable, Microwaveable, and Safe. The Greatview Microwave Rapid Heat Pack is a paper-based aseptic packaging with a 7-layer composite structure. It replaces the aluminum foil layer used in conventional aseptic packaging, offering microwave heating properties while maintaining product quality and safety. This packaging is ideal for heatable warm beverages. Applicable Specifications: 125 ml 200 ml 250 ml. The overall packaging reduces the carbon footprint by 40%.