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foam paper

06.06.2000

Styrofoam is widely used for packaging fragile products - a porous plastic used to make packaging inserts for boxes with equipment and balls or flakes poured into such boxes to soften shocks. However, the synthesis of styrofoam consumes a non-renewable raw material - oil, gases that are dangerous for the Earth's ozone layer are used in its production, and the used packaging practically does not decompose, accumulating in nature.

The German inventor Friedrich Pries from Hamburg founded a small company that produces foamed packaging material from waste paper using the technology he developed. Waste paper is finely cut, then ground into individual fibers, which are mixed with starch.

Granules are pressed from this mass. They are subjected to high pressure in a sealed apparatus with superheated water vapor, and then the pressure is abruptly released. The granules foam, forming porous balls that absorb shocks better than styrofoam.

Packing inserts are also obtained, only the paper pulp is preliminarily poured into molds. This material is cheaper than styrofoam and quickly decomposes in a landfill by microbes and fungi.

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