Hollow polycarbonate is also often named as a structural polycarbonate, cellular polycarbonate, channel polycarbonate or multiwall polycarbonate. The definition «cellular» is used due to its special internal structure. Air, which is present in the space (cells) between the dividing walls inside of the polycarbonate sheet (called chambers), provides thermal insulation properties, and the existing stiffeners (dividers), ensure a great structural rigidness and flexibility of polycarbonate sheet at the same time.
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