Mineral-based panel

Patent metadata

Field	Value
Publication number	US-11840846-B2
Application number	US-202117318232-A
Country	US
Kind code	B2
Filing date	May 12, 2021
Priority date	May 12, 2020
Publication date	Dec 12, 2023
Grant date	Dec 12, 2023

Abstract

A mineral-based panel including a core, wherein the panel includes a mechanical locking system at respective opposite first and second edges, for assembling a first panel in an assembled position with an adjacent second panel by means of a folding displacement and/or a vertical displacement of the adjacent panels; the first edge including a locking strip projecting beyond a vertical plane and a locking element projecting from the locking strip; the second edge including a downwardly open locking groove configured to receive the locking element by for horizontal locking of the adjacent panels, wherein a first pair of horizontal locking surfaces includes a first locking surface provided by the locking element and a second locking surface provided by the locking groove. The locking system has play between the first locking surface and the second locking surface during assembling of the first and second panel by means of said displacement.

First claim

The invention claimed is:

1. A mineral-based panel comprising a core, wherein the panel comprises a mechanical locking system at respective opposite first and second edges, for assembling a first panel in an assembled position with an adjacent similar or essentially identical second panel by means of a folding displacement of the adjacent panels;
wherein immediately juxtaposed upper edge portions of the first edge of the first panel and the second edge of the second panel in the assembled position form a vertical plane;
the first edge comprising a locking strip projecting beyond the vertical plane and a locking element projecting from the locking strip;
the second edge comprising a downwards open locking groove configured to receive the locking element by means of said displacement for horizontal locking of the panels, wherein a first pair of horizontal locking surfaces comprises a first locking surface provided by the locking element and a second locking surface provided by the locking groove;
wherein the locking system is configured such that there is provided play, between the first locking surface and the second locking surface during assembling of the first and second panel by means of said displacement,
wherein the mineral-based panel comprises a mineral-based layer comprising at least 20 wt % of a mineral material.

2. The mineral-based panel according to claim 1 , wherein the locking system is configured such that there is provided play between the first locking surface and the second locking surfaces in the assembled position.

3. The mineral-based panel according to claim 1 , wherein one of the first or second edge comprises a locking tongue and the other of the first or second edge comprises a tongue groove; wherein the locking system is configured such that the locking tongue is received in the tongue groove of the second edge by means of a folding displacement and/or a vertical displacement of the adjacent second panel, for vertical locking of first edge and the second edge in a horizontal plane.

4. The mineral-based panel according to claim 1 , wherein during said assembling, said upper edge portions are simultaneously in contact in a first contact point.

5. The mineral-based panel according to claim 1 , wherein during said assembling, an upper wall portion of the tongue groove and an upper portion of the locking tongue are in contact in a second contact point.

6. The mineral-based panel according to claim 1 , wherein a locking angle is formed between the first locking surface and a rear surface of the panel, the locking angle being in the range of 40 to 60 degrees.

7. The mineral-based panel according to claim 6 , wherein the locking angle is adapted to allow assembling by means of said folding displacement without flexing or compression of the locking strip and/or the locking element.

8. The mineral-based panel according to claim 2 , wherein the play between the first locking surface and the second locking surface is in in the range of 0 to 0.1 mm.

9. The mineral-based panel according to claim 1 , wherein assembling of the first and second panel comprises displacement in an assembling direction from a first position wherein the adjacent edges are in contact in a first point, to a second assembled position for horizontal locking of the adjacent edges by means of the first locking surface and the second locking surface.

10. The mineral-based panel according to claim 9 , wherein a dimension between the first contact point and a point on the first locking surface is constant during assembling of the first and second panel.

11. The mineral-based panel according to claim 1 , wherein a shortest first distance between a pivot point of the panel being displaced and the first locking surface equals or is greater than a greatest second distance between the pivot point and the second locking surface.

12. The mineral-based panel according to claim 11 , wherein said second distance corresponds to a radius of curvature of a predetermined trajectory of point from the first position to the second assembled position.

13. The mineral-based panel according to claim 1 , further comprising a lower arrangement comprising one or more layers, and an upper arrangement comprising one or more layers.

14. The mineral-based panel according to claim 13 , wherein one or more of the core, the lower arrangement, and the upper arrangement comprises a mineral-based layer, wherein the mineral-based layer comprises inorganic matrix material.

15. The mineral-based panel according to claim 14 , wherein the mineral-based layer comprises 35-55 wt % magnesium oxide.

16. The mineral-based panel according to claim 14 , wherein the locking system is formed at least partially in said mineral-based layer(s).

17. The mineral-based panel according to claim 14 , wherein the locking strip is formed at least partially in said mineral-based layer(s).

18. The mineral-based panel according to claim 1 , wherein the core comprises magnesium oxide.

19. The mineral-based panel according to claim 1 , wherein the core comprises 35-55 wt % magnesium oxide.

20. The mineral-based panel according to claim 14 , wherein the inorganic matrix material comprises magnesium oxide, cement, or gypsum.

21. The mineral-based panel according to claim 14 , wherein the mineral-based layer comprises 35-55 wt % magnesium oxide and 15-35 wt % of a material selected from magnesium chloride, magnesium sulphate, or a combination thereof.

Assignees

• Vaelinge Innovation Ab
• Valinge Innovation Ab

Inventors

• Boo Christian

Classifications

• E04F15/02038 Primary

  characterised by tongue and groove connections between neighbouring flooring elements · CPC title

• B32B3/06

  for securing layers together; for attaching the product to another member, e.g. to a support {, or to another product, e.g. groove/tongue, interlocking} · CPC title

• B32B13/10

  of wood; of wood particle board · CPC title

• B32B13/12

  of synthetic resin · CPC title

• E04F15/08

  only of stone or stone-like material, e.g. {ceramics}, concrete; of glass {or with a top layer of stone or stone-like material, e.g. ceramics, concrete or glass (E04F15/02005 takes precedence)} · CPC title