Mechanism of Foaming on Polymer-Paperboard Composites.

The article presents a study which investigated the mechanism of foaming with a combination of high-speed photography, scanning electron microscopy, and infrared thermography using foamed paperboard of different compositions prepared both in the laboratory and on a commercial machine. The study addresses the fundamental mechanism of foaming and identify the characteristics of the board that lead to a product with evenly distributed bubbles of a uniform size. The study attempts to understand the fundamental mechanism of foaming on paper-polymer composites.