Sheet material

Details Sheet material Sheet material

B - Operations, Transporting

29

C

B29C 47/20 (2006.01) B29D 24/00 (2006.01) B65D 65/38 (2006.01) E04C 2/34 (2006.01)

Patent

CA 2080335

A plastic sheet material comprises a pair of opposed faces (12, 14)between which run a series of elongate voids (16), the voids being arranged such that there are a series of uninterrupted interconnections (18) between the two opposite faces. The voids are of a cross sectional shape such that there is a substantial absence of sharp corners. Where the voids are not in themselves round the corners are radiussed (24). In a preferred construction two series of interconnections are provided which join one an- other where they meet (20). The construction is particularly useful in packaging, especially the packaging of food products, it has high buckling resistance in both the machine and cross-machine directions and is in particular resistant to torsional stresses, com- pression and/or extension and has good impact resistance.

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