Granted Patent B2

US 12,534,921 · App. 18/628,988 · Granted Jan 27, 2026

Inventors: Per Josefsson (Ramlösa, SE); Pontus Gamstedt (Kattarp, SE); Per Nygren (Ramlösa, SE)

Assignee: CERALOC INNOVATION AB

E04F15/02033E04F13/076E04F13/0894E04F15/087E04F2201/0115

Abstract

Claims (24)

1 . A mineral-based panel comprising

a mineral-based core comprising magnesium oxide, and

a lower arrangement comprising at least one polymer-based lower layer, the lower arrangement being attached to a lower side of the mineral-based core,

wherein the mineral-based panel further comprises a locking system for horizontal and/or vertical locking, the locking system comprising a strip extending horizontally beyond an upper portion of the mineral-based panel, and

wherein at least a horizontal portion of the strip is entirely formed in the lower arrangement.

2 . The mineral-based panel according to claim 1 , wherein the strip comprises a locking element, the horizontal portion at least being provided horizontally inwardly of the locking element.

3 . The mineral-based panel according to claim 2 , wherein the locking element comprises a portion of the mineral-based core at a distal end portion of the locking element.

4 . The mineral-based panel according to claim 1 , wherein the horizontal portion comprises the entire strip.

5 . The mineral-based panel according to claim 4 , wherein the strip includes a locking element.

6 . The mineral-based panel according to claim 1 , wherein a horizontal and/or a vertical locking surface is provided in the lower arrangement.

7 . The mineral-based panel according to claim 1 , wherein the locking system includes a horizontal locking system comprising a locking element and a locking groove, and/or wherein the locking system includes a vertical locking system comprising a tongue and a tongue groove.

8 . The mineral-based panel according to claim 7 , wherein a vertical plane is defined by a joint edge portion of the upper portion, wherein a horizontal extension of the tongue from the vertical plane is smaller than an extension of the strip from the vertical plane.

9 . The mineral-based panel according to claim 1 , wherein the at least one polymer-based lower layer is at least one thermoplastic layer.

10 . The mineral-based panel according to claim 1 , wherein the at least one polymer-based lower layer is at least one thermoplastic layer comprising PVC, PE, TPU, PP, PET or ABS.

11 . The mineral-based panel according to claim 1 , wherein the at least one polymer-based lower layer is at least one thermosetting layer.

12 . The mineral-based panel according to claim 1 , wherein the mineral-based core further comprises at least one of magnesium chloride and magnesium sulphate.

13 . 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.

14 . The mineral-based panel according to claim 13 , wherein the upper arrangement comprises at least one thermoplastic layer or at least one thermosetting layer.

15 . The mineral-based panel according to claim 1 , further comprising at least one reinforcement layer.

16 . The mineral-based panel according to claim 15 , wherein the reinforcement layer is a glass-fibre layer.

17 . The mineral-based panel according to claim 15 , wherein the at least one reinforcement layer is provided in the mineral-based core.

18 . The mineral-based panel according to claim 15 , wherein at least one reinforcement layer is positioned in a top portion and/or a bottom portion of the mineral-based core.

19 . The mineral-based panel according to claim 1 , wherein the lower arrangement comprises a backing layer impacting the balancing and/or stability of the mineral-based panel.

20 . The mineral-based panel according to claim 1 , wherein the mineral-based panel is a building panel, floor panel, wall panel, ceiling panel, or furniture panel.

Assignments (1)

Priority Claims (1)

Continuity (3)

References Cited (250)