Precut plate for obtaining a volume, in particular a package, method for making same and resulting package
AssigneeP.W.F. Group
InventorRoland Noilhan
Life of this patent
Estimating the term…
Abstract
A precut plate for defining an assembly of plate parts is capable of taking at least first and second shapes. A first flat shape, wherein the plate as a whole is substantially in a plane and a second folded shape, obtained after folding about hinge parts of the plate one relative to the others to define a hollow volume, for example all or part of a package for products. The plate includes at least three layers stacked on one another. The second layer located between the first and the third layer is a flexible material layer, at least the first of the two first and third layers being a relatively rigid layer. The invention also concerns the resulting volume or package, and the method for making the plate.
Claims15
Sheet, which has been previously cut-out to define an assembly of sheet parts, said sheet (1) being capable of assuming at least two first and second configurations, the first configuration called flat, in which said sheet in its assembly is substantially in one plane, and the second configuration called folded, obtained after folding, around hinge means (30), sheet parts (2, 3, 4) relative to one another to define a hollow volume, wherein said sheet is a stack at least three layers (21, 22, 23) on top of one another, respectively first, second and third layers, the second layer (22), situated between the first layer (21) and the third layer (23), being a layer of flexible material, and the first layer being a relatively rigid layer, the first relatively rigid layer (21) being one of the following materials:
- plywood board, wood fibre board, wood sheet, reconstituted wood board, laminated board of wood particles agglomerated with or without a bonding agent, the hinge means (30) comprising a groove (33) provided along a fold line (34) in only the first (21) layer.
Method of manufacturing a sheet, comprising the following steps:
- stacking at least three layers (21, 22, 23) on top of one another, respectively first, second and third layers, whilst providing therebetween a means for connecting the layers, the second layer (22), situated between the first layer (21) and the third layer (23), being a layer of flexible material, and at least the first of the two first and third layers being a relatively rigid layer, and
- pressing the stacked mass, thus produced, between a first matrix and a second matrix, respectively in contact with said first and third layers, said first matrix at least comprising, on its contact surface with the first layer, a male configuration to produce a groove (33) along a fold line (34) in the first layer (21) of the two first and third layers.
Dependencies are inferred from the claim text.