Mineral-based panel comprising grooves and a method for forming grooves
A mineral-based floor panel including a mineral-based core, wherein the panel includes at least one groove. The at least one groove may be provided in a rear side of the panel. There is also disclosed other such mineral-based panels, such as a building panel, a wall panel, a ceiling panel or a furniture panel. There is also disclosed a method for forming such grooves in a mineral-based panel. Furthermore, there is disclosed a mineral-based panel including a mineral-based core and polymer-based lower layer(s) attached to the core. A locking system of the panel includes a strip extending horizontally beyond an upper portion of the panel, wherein at least a horizontal portion of the strip is entirely formed in the polymer-based lower layer(s).
1. A mineral-based panel comprising a mineral-based core comprising magnesium oxide,
wherein the panel comprises at least one groove,
wherein the at least one groove is provided in a rear side of the panel,
wherein the rear side has a rear side surface area, and the front side has a front side surface area,
wherein the entire rear side surface area is less than 90% of the entire front side surface area of the front side of the panel.
2. The mineral-based panel according to claim 1 , wherein the mineral-based core further comprises at least one of magnesium chloride and magnesium sulphate.
3. The mineral-based panel according to claim 1 , wherein the at least one groove is provided in a lower side of the mineral-based core.
4. The mineral-based panel according to claim 1 , further comprising a lower arrangement comprising at least one lower layer being attached to a lower side of the mineral-based core.
5. The mineral-based panel according to claim 4 , wherein the at least one groove is at least partly provided in the lower arrangement.
6. The mineral-based panel according to claim 4 , wherein the lower arrangement comprises at least one polymer-based layer.
7. The mineral-based panel according to claim 6 , wherein the at least one polymer-based layer is at least one thermoplastic layer.
8. The mineral-based panel according to claim 1 , further comprising an upper arrangement comprising at least one upper layer being attached to an upper side of the mineral-based core.
9. The mineral-based panel according to claim 8 , wherein the upper arrangement comprises at least one polymer-based layer.
10. The mineral-based panel according to claim 9 , wherein the at least one polymer-based layer is at least one thermoplastic layer.
11. The mineral-based panel according to claim 1 , further comprising at least one reinforcement layer provided in the mineral-based core.
12. The mineral-based panel according to claim 1 , comprising a plurality of grooves, wherein at least two grooves have different groove depths and/or groove widths.
13. The mineral-based panel according to claim 1 , wherein the at least one groove is provided in an interior of the rear side being spaced from a pair of opposite edge portions of the panel.
14. The mineral-based panel according to claim 1 , wherein the at least one groove is continuous.
15. The mineral-based panel according to claim 1 , comprising a plurality of discontinuous grooves.
16. The mineral-based panel according to claim 1 , wherein the at least one groove is parallel with long edge portions of the panel.
17. The mineral-based panel according to claim 1 , comprising at least two groove arrangements, wherein adjacent pairs of groove arrangements are separated by a separation portion.
18. The mineral-based panel according to claim 1 , wherein the area of the rear side is less than 80% of an area of the front side.
19. The mineral-based panel according to claim 1 , wherein the panel is a building panel, a floor panel, a wall panel, a ceiling panel, or a furniture panel.