Importance

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Abstract

The present invention is a multi-wall sheet made of a plastic with a high shear modulus intended to provide physical protection, structural support, and thermal insulation in applications where a small bending radius for the multi-wall plastic sheet is desired. The multi-wall configuration includes a generally flat outer single sheet and a contoured inner single sheet separated by a series of ribs of similar plastic material to form a connected row of longitudinal cavities or “channels”. The inner wall is contoured in a concave manner to form a relief between each rib. When the multi-wall sheet is flexed, each relief distorts to minimize stress in the transverse direction while maintaining high rigidity in the longitudinal direction. In another embodiment of the present invention, multiple single sheets separated by ribs and contoured similarly to that of the inner wall are added between the contoured inner wall and non-contoured outer wall.

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First Claim