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CN-117642532-B - Conformable sheet material comprising two faces connected by a uniform connection structure

CN117642532BCN 117642532 BCN117642532 BCN 117642532BCN-117642532-B

Abstract

The invention relates to a sheet material comprising a first fabric (1), a second fabric (3) and a connecting structure comprising supports (4) connecting the first fabric to the second fabric, wherein the resting length of each support (4) is substantially equal to the average value of the resting lengths of the supports (4), and the first fabric (1) is plastically deformable in at least one main direction thereof.

Inventors

  • B. limo Zan
  • C. Le Claire

Assignees

  • 米其林集团总公司

Dates

Publication Date
20260505
Application Date
20220623
Priority Date
20210624

Claims (15)

  1. 1.A sheet material, the sheet material comprising: -a first weave comprising filiform elements (C1) called warp elements and filiform elements (T1) called weft elements, the warp elements of the first weave being substantially parallel to each other and extending in a direction called warp direction, the warp direction constituting a first main direction of the first weave, the weft elements of the first weave being substantially parallel to each other and extending in a direction called weft direction, the weft direction constituting a second main direction of the first weave, the second main direction of the first weave being different from the first main direction of the first weave; -a second weave comprising filiform elements (C2) called warp elements and second filiform elements (T2) called weft elements, the warp elements of the second weave being substantially parallel to each other and extending in a direction called warp direction, the warp direction constituting a first main direction of the second weave, the weft elements of the second weave being substantially parallel to each other and extending in a direction called weft direction, the weft direction constituting a second main direction of the second weave, the second main direction of the second weave being different from the first main direction of the second weave; A connection structure comprising n filiform elements connecting the first braid to the second braid, each filiform element comprising at least one filiform portion called support extending between and connecting the first braid to the second braid, each support i having a resting length h i and extending from an attachment point with the first braid to an attachment point with the second braid; characterized in that the rest length of each support of the connection structure is substantially equal to the average value of the rest lengths of the supports M represents the total number of supports of the connection structure and the first braid is plastically deformable in at least one of the first and second principal directions of the first braid.
  2. 2. The sheet of claim 1 including a filler material between the inner surface of the first braid and the inner surface of the second braid.
  3. 3. The board of claim 2, wherein the filler material is selected from the group consisting of sand, cement-based foam, gypsum, soil, clay, natural fibers, inorganic fibers, polystyrene, polyurethane, cork.
  4. 4. The sheet of material as defined in claim 2 wherein, the filler material is an intumescent material.
  5. 5. The sheet of material as defined in claim 1 wherein, the second braid is deformable in at least one of the first and second primary directions of the second braid.
  6. 6. The sheet of material as defined in claim 5 wherein, the second braid is plastically deformed.
  7. 7. The sheet of material as defined in claim 5 wherein, the second braid is elastically deformed.
  8. 8. The sheet of claim 1, wherein at least one of the first and second braids comprises at least one deformable region comprising at least one filiform element ED deformable under traction, wherein for any filiform element ED deformable under traction there is an elongation a ED <AR ED such that M1 ED /M2 ED <1, wherein M1 ED represents the modulus of the deformable filiform element ED at any elongation less than or equal to k1×a ED %, M2 ED represents the modulus of the deformable filiform element ED at any elongation greater than or equal to k2×a ED %, AR ED represents the elongation at break of the element ED in%, K1 ranges from 0.8 to 0.95, K2 ranges from 1.05 to 1.2, the modulus value M1 ED 、M2 ED and the elongation at break AR ED being measured according to standard ASTM D885-03.
  9. 9. The sheet of claim 1 wherein the first and second braids, independently of each other, comprise a material selected from the group consisting of polyesters, polyamides, polyketones, polyurethanes, natural fibers, inorganic fibers, cellulosic fibers, and combinations of these materials.
  10. 10. The panel of claim 1, wherein at least one braid comprises a flame retardant material that is a natural flame retardant material or a flame retardant treated material.
  11. 11. The sheet of material as defined in claim 1 wherein, each filamentary element of the connection is a textile element.
  12. 12. The sheet of claim 11, wherein each filamentary element of the attachment structure is a multifilament textile fiber, each fiber comprising the textile fiber having a diameter of between 0.001mm and 0.5 mm.
  13. 13. A sheet material according to any one of claims 1 to 10, wherein each filamentary element of the connection is a metallic element.
  14. 14. The sheet of material as defined in claim 1 wherein, the average resting length of the support member Greater than 8mm.
  15. 15. Assembly comprising at least one sheet according to any one of claims 1 to 14.

Description

Conformable sheet material comprising two faces connected by a uniform connection structure Technical Field The present invention relates to a panel comprising two braids connected by a load-bearing structure, and the use of such a panel as a building material. Background A large number of boards are used in the construction industry. Among these boards, mention may be made of structural boards such as concrete or gypsum boards, or of insulating boards such as polyurethane, rock wool or wood fibre boards. These panels may be made of a single type of material, such as gypsum, and are therefore commonly referred to as "solid" panels. They may also be made from a combination of a number of different materials to enhance one or more specific qualities and are therefore commonly referred to as "composite" sheets. Thus, document US2017/0044766 describes a composite floor covering made of a so-called three-dimensional braid comprising two planar fabrics connected by a spacer element, which makes the two faces parallel and at a distance, such three-dimensional braid being reticular, through which cement can be poured, thus forming a reinforced floor. This structure needs to be laid on a horizontal support because the sheet material cannot contain the filler material. Document WO2019/197319 describes a composite material consisting of a three-dimensional braid comprising two faces, the separation between which is regulated by a spacer intended to form the sole, and a polyurethane foam, the spacer achieving a mechanical integrity function by maintaining a certain space between the two faces of the braid, providing resistance to the continuous compression undergone by the sole. Documents US 2010/023417 and WO2015/053842 describe a flexible textile composite material capable of "setting" (in the manner of cement "setting"), i.e. such a composite material can be made rigid or semi-rigid by the application of a liquid or radiation, such a composite material being made of a three-dimensional braid having two planes and spacers and containing powders. The powder is introduced through one face of the braid which is capable of deforming to form the space required to introduce the powder and is contracted to contain the powder, and one or more faces of the braid are also permeable to the liquid or radiation required to set the powder, thereby stiffening the composite. The faces are kept separated by a distance by a spacer, which may consist of a set of fibres or filaments alone. Although there is theoretically no limit to the thickness of the composite material according to US 2010/023417, the listed constraints, in particular the ability of the liquid to penetrate the powder material core before the outer portion hardens, the ability of the faces to support the weight of the powder, and the constraints on the rigidity of the spacer in order for the spacer to function properly to maintain the space between the two inner surfaces of the composite material, therefore limit the thickness of these composite materials to be relatively small, typically to about a few millimeters, as indicated by the "general..+ -. Examples shown in the examples of WO 2015/053842. Document WO2015/187826 describes a textile composite comprising a nonwoven fabric, one side of which is permeable to liquid and the other side of which is impermeable, the fabric being filled with a material capable of becoming rigid upon contact with liquid. The two faces of the fabric are separated by a set of self-supporting fibers, i.e. the fibers generally maintain the spacing between the two faces and are resistant to compressive mechanical forces. When such a composite is bent before the filler material hardens, wrinkles are formed on the surface thereof. Regardless of the function or location of the panels, the stress requirements are easy to implement and maintain their integrity. While it is easy to create or cover a planar surface, it can be particularly troublesome when constructing or covering a complex surface (e.g., curved surface) or even an irregular surface. Thus, there is a need for a sheet material that is complex in shape, simple to use, and capable of meeting a variety of requirements. Disclosure of Invention To meet these needs, applicant company developed a sheet material having a first braid and a second braid connected to the first braid by a connecting structure, the first braid being deformable in at least one primary direction of the first braid. The sheet may be filled with a filler material, the nature of which depends on the intended use of the sheet. Definition of the definition The carbon-containing compounds referred to in this specification may be of fossil or bio-based origin. In the case of bio-based sources, the carbon-containing compounds may be partially or fully derived from biomass, or obtained from renewable raw materials derived from biomass. In particular, it relates to polymers, plasticizers, fillers, and the like. "Substantia