Fibre-containing sheet comprising a folding pattern and method of producing the same
AssigneeInnventia AB
InventorsHjalmar Granberg, Anna Nilsson, Hanna Skoglund
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Abstract
A fibre-containing sheet comprising a folding pattern and a partly or fully folded sheet product obtained from the fibre-containing sheet is disclosed. The folding pattern of the fibre-containing sheet comprises a series of parallel straight fold lines and a series of zigzag fold lines. Each zigzag fold line has a breadth which is greater than a breadth of a straight fold line. The partly folded sheet product can be shaped into various complex geometrical shapes, including spheres and saddle points, as a result of the folding pattern. A method for producing the fibre-containing sheet as well as use of the fibre-containing sheet is also disclosed.
Claims24
A fibre-containing sheet (31, 51, 61) comprising a folding pattern forming fold lines and facets (35), the folding pattern consisting of a series of parallel straight fold lines (32) extending in a first surface direction of the sheet and a series of zigzag fold lines (33) extending in a second surface direction of the sheet, the straight fold lines (32) being intersected by the zigzag fold lines (33), each zigzag fold line altering course at each and every intersection (34) with a straight fold line, the straight fold lines and zigzag fold lines together defining a grid of facets (35), wherein each facet is parallelogrammatic in shape, each zigzag fold line (33) has a breadth b that is greater than a breadth a of any one of the parallel straight fold lines (32), and fold line breadth is measured perpendicular to the course of the fold line.
A method of producing a fibre-containing sheet comprising a folding pattern, the method comprising the steps of providing a fibre-containing sheet and forming a folding pattern on said sheet such that the folding pattern comprises a series of parallel straight fold lines in a first surface direction of the sheet, the straight fold lines being intersected by zigzag fold lines extending in a second surface direction of the sheet, each zigzag fold line altering course at each and every intersection with a straight fold line, the straight fold lines and zigzag fold lines together defining a grid of facets, wherein each facet is parallelogrammatic in form, and wherein each zigzag fold line has a breadth b that is greater than a breadth a of any one of the parallel straight fold lines, wherein fold line breadth is measured perpendicular to the course of the fold line.
Dependencies are inferred from the claim text.