| 摘要 |
<p>Biodegradable packaging material, particularly of block form, comprises an ordered structure of lengths 16 of foamed starch rod. The rod may be extruded and each length adhered to at least one adjacent length. The surface of each length may be moistened with water, eg a spray or steam, to cause the surfaces to adhere together. The lengths of rod may be in substantially axial alignment and may be arranged in layers, the lengths in successive layers being parallel and/or perpendicular. The ordered structure may comprise a cubic grid structure, a honeycomb lattice structure or a helix. Reinforcement ribs of denser material may be formed along the regions of contact of adjacent lengths. The structure may be at least partially covered with a protective or decorative coating such as wax paper.</p> |
