Panel forming
AssigneeCeraloc Innovation AB
InventorDarko Pervan
Life of this patent
Estimating the term…
Abstract
Building panels, especially laminated floor panels are shown, which are provided with a locking system and several core grooves at the rear side in order to save material and decrease weight. Building panels, each having a surface layer on a front side, a backing layer on a rear side and an intermediate core, wherein the intermediate core and the surface and the backing layer all comprise wood fibres and thermosetting resins, the building panels are provided with a locking system for vertical and horizontal locking of a first edge of a first building panel to an adjacent second edge of a second building panel.
Claims20
Building panels, each building panel having a surface layer and a core,
- wherein the core and the surface layer comprise a thermoplastic material,
- wherein at least three core grooves are provided in a rear side of the building panels with an opening towards the rear side, and
- wherein an area of the rear side is less than about 80% of an area of the surface layer,
- wherein at least two of the core grooves have different groove depths.
Dependencies are inferred from the claim text.