초록 ▼

A cross-corrugated panel has a core between two faceplates, where the core comprises two groups of corrugated elements that are perpendicular to each other. The corrugated elements have peaks and troughs connected by diagonally-extending segments. In each group of corrugated elements the peaks and t

A cross-corrugated panel has a core between two faceplates, where the core comprises two groups of corrugated elements that are perpendicular to each other. The corrugated elements have peaks and troughs connected by diagonally-extending segments. In each group of corrugated elements the peaks and troughs in adjacent elements are 180 degrees out-of-phase with each other. The faceplates and the corrugated elements in each group are joined at the peaks and troughs. The diagonally-extending segments of one of the elements comprise flat strips whose flat surfaces are parallel to each other and perpendicular to the faceplates. To make a cross-corrugated panel, a first group of elements is provided, each element being formed by oppositely winding two strips of curable material to form overlapping helixes having rectangular cross-sections. The elements are positioned in parallel. A second group of elements of curable material is placed perpendicular to the first group of elements. Each such element is positioned alternately over and under adjacent elements of the first group to form peaks and troughs. The peaks and troughs of adjacent elements are 180 degrees out-of-phase with each other. Mandrels and inserts are used to form the elements in each of the groups. The elements are then disposed between two faceplates of curable material to form an assembly. The mandrels and inserts are replaced by granular particles and the assembly is cured.

대표청구항 ▼

A cross-corrugated panel, comprising: first and second faceplates positioned essentially parallel to and spaced apart from each other; first and second pluralities of corrugated elements fixed between said first and second faceplates, the corrugated elements of each plurality having planar peaks and

A cross-corrugated panel, comprising: first and second faceplates positioned essentially parallel to and spaced apart from each other; first and second pluralities of corrugated elements fixed between said first and second faceplates, the corrugated elements of each plurality having planar peaks and troughs positioned at regular intervals and connected by diagonally-extending segments, and being positioned parallel to and spaced apart from each other with the peaks and the troughs being 180 degrees out-of-phase with each other such that the peaks of one element are adjacent to the troughs of adjacent elements, said two pluralities of element being positioned perpendicular to each other, the elements of one plurality crossing the elements of the other plurality at their respective planar peaks and troughs, the diagonally-extending segments of said first plurality of elements comprising two flat strips whose flat surfaces are parallel to each other and perpendicular to said faceplates.