PANEL COMPRISING TWO FACES LINKED BY A UNIFORM CONNECTING STRUCTURE

Abstract

A panel comprises a non-deformable first woven fabric and a non-deformable second woven fabric, and a linking structure comprising stays linking the first woven fabric to the second woven fabric, each stay having an at-rest length that is substantially equal to the mean of the at-rest lengths of the stays, the panel comprising a cement-based foam.

Claims

1.-10. (canceled)

11. A panel comprising: a first woven fabric comprising filamentary warp elements (C1), which are substantially parallel to one another and extend in a warp direction, which constitutes a first main direction of the first woven fabric, and filamentary weft elements (T1), which are substantially parallel to one another and extend in a weft direction, which constitutes a second main direction of the first woven fabric, different from the first main direction of the first woven fabric; a second woven fabric comprising filamentary warp elements (C2), which are substantially parallel to one another and extend in a second warp direction, which constitutes a first main direction of the second woven fabric, and second filamentary weft elements (T2), which are substantially parallel to one another and extend in a second weft direction, which constitutes a second main direction of the second woven fabric, different from the first main direction of the second woven fabric; and a linking structure comprising n filamentary elements linking the first woven fabric to the second woven fabric, each filamentary element comprising at least one stay, extending between the first and second woven fabrics and linking the first woven fabric to the second woven fabric, each stay i having an at-rest length h.sub.i and extending from a point of attachment to the first woven fabric to a point of attachment to the second woven fabric, wherein each stay of the linking structure has an at-rest length that is substantially equal to the mean h.sub.m of the at-rest lengths of the stays, m representing a total number of stays of the linking structure, wherein the first woven fabric and the second woven fabric are non-deformable, and wherein the panel further comprises, between an internal face of the first woven fabric and an internal face of the second woven fabric, a filling material, the filling material being a cement-based foam, the linking structure being such that it is unable by itself to support a spacing between the two internal faces of the panel.

12. The panel according to claim 11, wherein the first and second woven fabrics comprise, independently of one another, a material selected from the group consisting of a polyester, a polyamide, a polyketone, a polyurethane, a natural fiber, an inorganic fiber and a collection thereof.

13. The panel according to claim 11, wherein at least one of the woven fabrics comprises a material that is fire-retardant either through its nature or by having a fire-retardant treatment.

14. The panel according to claim 11, wherein each filamentary element of the linking structure is a textile element.

15. The panel according to claim 14, wherein each filamentary element of the linking structure is a multifilament textile fiber, each fibril making up the multifilament textile fiber having a diameter between 0.001 and 0.5 mm.

16. The panel according to claim 11, wherein each filamentary element of the linking structure is a metallic element.

17. The panel according to claim 11, wherein the mean at-rest length h.sub.m of the stays is greater than 8 mm.

18. The panel according to claim 11, wherein at least one of the first woven fabric and the second woven fabric is arranged in such a way as to be impervious to the filling material.

19. An assembly comprising at least one panel according to claim 11.

20. A method for manufacturing the panel according to claim 11, the method comprising the following steps: laying down on a surface a three-dimensional woven fabric comprising the first woven fabric, the second woven fabric, and the linking structure; and injecting the filling material between the internal face of the first woven fabric and the internal face of the second woven fabric, via at least one end of the panel.

Description

DESCRIPTION OF THE FIGURES

[0061] FIG. 1 View from above of the panel according to the invention.

[0062] FIG. 2 View in cross section, on the plane of cross section P-P, indicated in FIG. 1, of the panel according to the invention.

[0063] FIG. 1 depicts a view from above of a panel (10) according to the invention and FIG. 2 depicts a schematic view in cross section through a panel (10). In these two figures, the same elements are numbered in the same way.

[0064] The first woven fabric 26 comprises two longitudinal edges 26A and 26B. The first woven fabric 26 extends in a first main direction of the first woven fabric G1 substantially parallel to each longitudinal edge 26A. 26B. The first woven fabric 26 comprises filamentary elements 64, referred to as filamentary warp elements, and filamentary elements 66 referred to as filamentary weft elements. The filamentary warp elements 64 of the first woven fabric 26 are substantially parallel to one another and extend in a direction, referred to as the warp direction C1, substantially parallel to the first main direction G1. The filamentary weft elements 66 of the first woven fabric 26 are substantially parallel to one another and extend in a direction, referred to as the weft direction T1, interlacing with the filamentary warp elements 64. The filamentary warp elements 64 extend continuously along the entire length of the first woven fabric 26.

[0065] Each filamentary element 64, 66 here is, for example, a textile filamentary element.

[0066] The filamentary elements 64 are all substantially identical. Each filamentary warp element 64 comprises first and second filamentary members 65, 67. The second filamentary member 67 is substantially rectilinear and the first filamentary member 65 is wound substantially in a helix around the second filamentary member 67. Here, the first filamentary member 65 is a multifilament strand made of PET having a count equal to 110 tex and the second filamentary member 67 is a multifilament strand made of rayon with a count of 23 tex.

[0067] The filamentary elements 66 here comprise two filamentary members, the second filamentary member being substantially rectilinear and the first filamentary member being wound substantially in a helix around the second filamentary member. Here, the first filamentary member is a multifilament strand made of PET having a count equal to 110 tex and the second filamentary member is a multifilament strand made of rayon with a count of 23 tex.

[0068] The second woven fabric 28, depicted in FIG. 2, extends in a first main direction of the second woven fabric G2. The second woven fabric 28 comprises filamentary elements 68, referred to as filamentary warp elements, and filamentary elements 70 referred to as filamentary weft elements. The filamentary warp elements 68 of the second woven fabric 28 are substantially parallel to one another and extend in a direction, referred to as the warp direction C2, substantially parallel to the first main direction of the second woven fabric G2. The filamentary weft elements 70 of the second woven fabric 28 are substantially parallel to one another and extend in a direction, referred to as the weft direction T2, interlacing with the filamentary warp elements 68. The filamentary warp elements 68 extend continuously along the entire length of the second woven fabric 28.

[0069] Each filamentary element 68, 70 here is, for example, a textile filamentary element.

[0070] The filamentary elements 68 are all substantially identical and here are a multifilament strand made of PET having a count equal to 110 tex.

[0071] The filamentary elements 70 are all substantially identical and here are a multifilament strand made of PET having a count equal to 167 tex.

[0072] The panel (10) comprises a linking structure comprising filamentary elements linking the first woven fabric (26) to the second woven fabric (28), each filamentary element comprising at least one filamentary portion (74) referred to as a stay, extending between the first and second woven fabrics and linking the first woven fabric to the second woven fabric. Each filamentary element 32 extends alternately from the first woven fabric 26 towards the second woven fabric 28 and from the second woven fabric 28 towards the first woven fabric 26, when progressing along the filamentary bearing element 32. Each load-bearing filamentary element 32 here is a textile load-bearing filamentary element, made of PET and with a count of 55 tex.

[0073] Each filamentary element 32 comprises a load-bearing filamentary portion 74 extending between the first and second woven fabrics 26, 28, notably between the internal faces 42 and 46. Each filamentary bearing element 32 comprises first and second filamentary anchoring portions 76, 78 for anchoring the filamentary bearing element 32 respectively in the first woven fabric 26 and the second woven fabric 28. Each first and second filamentary anchoring portion 76, 78 prolongs the load-bearing portion 74 respectively into each first woven fabric 26 and second woven fabric 28. Each first and second filamentary anchoring portion 76, 78 is interlaced respectively with each first woven fabric 26 and second woven fabric 28. Each first and second filamentary anchoring portion 76, 78 is wound at least in part around respectively at least one first filamentary element 64, 66 of the first woven fabric 26 and at least one second filamentary element 68, 70 of the second woven fabric 28. In this way, each filamentary anchoring portion 76, 78 joins two load-bearing filamentary portions 74 together and each load-bearing filamentary portion 74 joins two filamentary anchoring portions 76, 78 together.

[0074] In this instance, each first filamentary anchoring portion 76 is wound at least in part around at least one filamentary weft element 66 of the first woven fabric 26 and, in this instance, preferably around at least two filamentary weft elements 66 that are adjacent in the first main direction of the first woven fabric G1. Similarly, each second filamentary anchoring portion 78 is wound at least in part around at least one filamentary weft element 68 of the second woven fabric 28, preferably around at least two filamentary weft elements 66 that are adjacent in the in the first main direction of the second woven fabric G2.

[0075] Each first and second filamentary anchoring portion 76, 78 extends in a direction substantially parallel respectively to the first main direction of the first and of the second woven fabric G1, G2.

[0076] Each first filamentary anchoring portion 76 passes alternately from the face 41 to the face 42 between two filamentary weft elements 66 that are adjacent and around which the first filamentary anchoring portion 76 is wound. Analogously, each second filamentary anchoring portion 78 passes alternately from the face 46 to the face 49 between two filamentary weft elements 68 that are adjacent and around which the second filamentary anchoring portion 78 is wound.