Improved locking device for foam coverings

Abstract

The device (1) comprises a base (10) extending in a machine direction (MD) and a cross direction (CD) and having an upper surface (12) and a lower surface (14) opposite the upper surface (12); an anchoring strip (30) including a support (31) formed by crossing warp and weft yarns; and a plurality of loops (35) extending from the support (31), each loop (35) having two legs extending from the support and a head forming an opposite end of the loop (35) remote from the legs, the loops (35) being secured to the lower surface of the base (10) via the heads of the loops (35) of the anchoring strip (30) by an adhesive (40), thereby defining a non-zero gap between the base (10) and the support (31) of the anchoring strip (30), and the adhesive (40) and the base (10) being made of different materials.

Description

[Technical Field]

[0001] FIELD OF THE DISCLOSURE The present disclosure relates to the field of locking systems, and in particular to the field of locking systems for securing trim to foam. [Background technology]

[0002] Self-locking locking systems are commonly used to construct locking systems for securing foam trim for, for example, vehicle seats or interior upholstery.

[0003] A commonly used system includes a base having an upper surface from which protruding locking elements and an opposite lower surface. The locking elements are typically hook-like elements, or more commonly loop-like elements suitable for forming a self-locking connection with a mating member. The lower surface is provided with a collection of loops. The device is incorporated into the product during a foam coating process, which partially encloses the base. The loops ensure that the device is securely locked within the foam. The foam is injected in liquid form, thereby penetrating the loops.

[0004] However, it is understood that the locking elements must be protected during the foam coating process. More specifically, if foam adheres to the locking elements, they will no longer function. A common solution is to apply a protective coating to the top surface of the base; this protective coating is then removed after the foam coating process. However, such a method is complicated to implement, and the coating removal process in particular is problematic from an industrial standpoint.

[0005] Alternatives have been explored to eliminate the need for this protective coating, but this creates problems when packaging in rolls ready to be cut, or when the product is cut and then directly boxed; the locking elements then engage the loops, creating restrictions when handling the product.

[0006] FIG. 1 shows an example of such a known device.

[0007] The figure shows device 100 including a base 110 extending in a machine direction MD and a cross direction CD. The base has an upper surface 112 and a lower surface 114. A locking element 120 extends from the upper surface 112 of base 110 and, as shown, is generally said to have a mushroom shape and is adapted to form a self-locking connection with a mating member, such as a loop or the same or a different complementary locking element.

[0008] An anchoring strip 130 is secured to the underside of base 110. Anchoring strip 130 has a support 131 defining an upper surface 132 and a lower surface 134. A loop 135 extends from lower surface 134 to provide an anchoring means within the foam, as described above.

[0009] The anchoring strip 130 is typically secured to the base 110 by adhesive 140, shown here between the lower surface 114 of the base 110 and the upper surface 132 of the support 131 of the anchoring strip 130.

[0010] As previously mentioned, locking element 120 is typically covered, in whole or in part, by a protective coating 150 applied to top surface 112 of base 110. This protective coating 150 must then be removed after a foam coating process designed to lock device 100 to the foam element. Locking is achieved, among other things, by incorporating loop 135 into the foam.

[0011] As noted above, removing this protective coating 150 is problematic and restrictive, and omitting this protective coating creates problems with protecting the locking elements 120 during the foam coating process and with packaging, as the locking elements 120 can become entangled in the loops 135 when packaged in a roll ready to be cut or loosely boxed after cutting.

[0012] Other fastening systems are commonly used to fasten multiple layers together, for example to provide insulation, especially thermal and / or acoustic and / or mechanical and / or light and / or air and / or moisture insulation. These commonly used systems are made up of various structures and very different materials, depending on the application and / or the performance to be achieved.

[0013] Commonly used systems include multi-layer laminates composed of different materials and having different structures to achieve desired performance for a desired application, but the structures cannot be used for different functions and / or applications, or include single layers with various structures. It is understood that these systems are limited by their unique characteristics. Therefore, there is a need to create systems with simpler structures that can be used for a wider range of applications.

[0014] Accordingly, the present disclosure aims to at least partially address these issues. DISCLOSURE OF THE INVENTION [Means for solving the problem]

[0015] To at least partially address the above problems, the present disclosure provides:

[0016] 1. A device intended to be at least partially enclosed in an outer jacket, comprising: a base extending in the machine direction and the cross direction, the base having an upper surface and a lower surface opposite the upper surface, the upper surface including a locking element; an anchoring strip intended to be at least partially covered by the jacket, the anchoring strip comprising: a support formed by crossing warp and weft yarns to form a plurality of crossings of continuous warp yarns in the machine direction and spaced apart in the transverse direction; and a plurality of loops extending from the support, each loop including two legs extending from the support and a head forming an opposite end of the loop remote from the legs; A fixing means; Equipped with the fixing means are configured to fix the anchoring strip to the underside of the base via the heads of at least some of the loops, in particular to define a non-zero distance between the base and the support of the anchoring strip, the non-zero distance being in particular intended to receive a jacket for fixing the device, Furthermore, the fixing means and the base are made of different materials.

[0017] The device therefore has a support that has less residual deformation than the prior art, better resistance to deformation, especially compression, better distribution of forces applied to the support of the anchoring strip, and potentially better resistance to tension and / or shear once anchored to the material.

[0018] According to one example, the support and the base of the anchoring strip are spaced apart by a distance of between 0.2 mm and 10 mm, or between 0.5 mm and 7 mm, possibly between 0.5 mm and 5 mm, in particular between 2.5 mm and 5 mm.

[0019] According to one example, the anchor strip has a basis weight per unit area of ​​25 g / m 2 More than 350g / m 2 Below, especially 30g / m 2 More than 220g / m 2 or less, or 50 g / m 2 More than 220g / m 2 The following is the result.

[0020] According to one example, the anchoring strip has an apparent density, which is expressed as a basis weight per unit area (g / m 2 ) and the height (mm) of the anchor strip, and is calculated as 1 kg / m 3 More than 500kg / m 3 Below, especially 2 kg / m 3 More than 200kg / m 3 Below 3kg / m 3 More than 100kg / m 3 The following is the result.

[0021] According to one example, the two loop portions arranged between the loop head and the respective loop legs extend in a direction that is not perpendicular to the plane formed by the base and / or in a direction that is not perpendicular to the plane containing the machine direction and the cross direction.

[0022] According to one example, the two loop portions arranged between the loop head and the respective loop leg portions have different shapes, for example, one is straight or substantially straight and the other is curved or substantially curved.

[0023] According to one example, the support has a thickness of 30 to 1200 micrometers, in particular 50 to 800 micrometers.

[0024] According to one example, the loop includes a crossing of the legs.

[0025] According to one example, the anchoring strip, in particular the support, has a length of 1 cm when viewed perpendicular to a plane containing the machine direction and the cross direction. 2 Each opening has at least 5 and at most 100 openings, and each opening has a diameter of at least 1.0 mm. 2 or 1 cm 2 Each opening has at least 5 but no more than 60 openings, each opening being at least 1.5 mm 2 or 1 cm 2 Each opening has at least 5 but no more than 50 openings, each opening being at least 1.8 mm 2 It has a surface area of According to one example, the opening has a generally square, rectangular, trapezoidal, circular or similar shape. In certain cases, the shape of the opening is asymmetric in the machine direction and / or the cross direction to facilitate the insertion of an outer covering into the anchoring strip, the outer covering being made of, for example, foam and / or gypsum and / or concrete and / or a cross-linked plastic material and / or a thermosetting material.

[0026] According to one example, the anchoring strip, in particular the support, has a length of 1 cm when viewed perpendicular to a plane containing the machine direction and the cross direction. 2 The opening rate per unit area (surface area of ​​the open support / target surface area) is 50% to 90%, particularly 60% to 90%, and more particularly 70% to 90%.

[0027] According to one example, the head of the loop is fixed to the lower surface of the base so as not to protrude beyond the upper surface of the base.

[0028] According to one example, at least 50% of the loops of the anchoring strip are secured to the underside of the base, or typically at least 75% of the loops are secured to the underside of the base, or in some cases 100% of the loops of the anchoring strip are secured to the underside of the base.

[0029] According to one example, the top surface of the base is provided with the locking element.

[0030] According to one example, the anchoring strip includes a plurality of leg loops that are arranged in the plane of the support and / or that protrude from the lower surface of the support (or the anchoring strip).

[0031] According to one example, the leg loops have a shape whose dimensions are all smaller than the dimensions of the loops that protrude from the top surface.

[0032] According to one example, the leg loops and the loops protruding from the top surface are formed from the same yarn, and there is typically a continuity of material between the leg loops and the loops protruding from the top surface.

[0033] According to one example, the base is made of woven and / or knitted fabric, and each of the locking elements includes a stem and a head; the stem extends from the upper surface of the base, and the head is formed at a free end of the stem facing the upper surface of the base; The stem of the locking element extends at least partially within the woven and / or knitted fabric of the base.

[0034] The base typically consists of monofilament and / or multifilament composite yarns, typically intersected, in particular by weaving and / or knitting, for example multifilament yarns having from 2 to 25 filaments, in particular multifilament yarns having from 2 to 15 filaments.

[0035] The synthetic yarn is formed, for example, from at least one thermoplastic material.

[0036] The threads typically have a diameter of from 30 to 600 micrometers, or from 70 to 550 micrometers.

[0037] According to one example, the support of the anchoring strip extends continuously in the machine direction.

[0038] The fixing means is typically an adhesive or glue.

[0039] According to one example, the device comprises a plurality of the anchoring strips, stacked to define a plurality of layers of the anchoring strips in a direction perpendicular to the lower surface of the base.

[0040] According to one example, the anchoring strips of each successive layer extend in a direction perpendicular to one another. This allows, for example, the anchoring strip to have a structure in which layers extending continuously in the machine direction and the transverse direction are superimposed.

[0041] According to one example, the anchoring strips of the stacked layers are fixed to one another by adhesive.

[0042] According to one example, the top surface of the base is provided with locking elements, for example locking elements for forming a self-locking fastening, in particular formed by weaving, knitting, injection moulding or extrusion.

[0043] According to one example, the base is made of woven and / or knitted fabric, and each of the locking elements includes a stem and a head; the stem extends from the upper surface of the base, and the head is formed at a free end of the stem facing the upper surface of the base; The stem of the locking element extends at least partially within the woven and / or knitted fabric of the base.

[0044] According to one example, the top surface of the base is provided with a layer comprising a moisture-proof membrane and / or an airtight membrane and / or kraft paper and / or wall material and / or gypsum board and / or paperboard and / or decorative or other covering material.

[0045] The present invention also relates to an assembly comprising the outer covering and a device as defined above, wherein the outer covering at least partially surrounds the anchoring strip, in particular the loop and / or the support of the anchoring strip.

[0046] For example, the outer covering may be made from foam, plaster or concrete material and / or cross-linked plastic and / or thermosetting material. [Brief explanation of the drawings]

[0047] The invention and its advantages will be better understood by reading the following detailed description of embodiments of the invention, given as non-limiting examples.

[0048] [Figure 1] FIG. 1 shows an example of a known device.

[0049] [Figure 2] FIG. 2 shows an example of an apparatus according to one embodiment of the present invention.

[0050] [Figure 3] FIG. 3 shows another view of the device shown in FIG.

[0051] [Figure 4] FIG. 4 shows an example application.

[0052] [Figure 5] FIG. 5 shows another example application.

[0053] [Figure 6] FIG. 6 shows another example application.

[0054] [Figure 7] FIG. 7 shows another example application.

[0055] [Figure 8] FIG. 8 shows another example application.

[0056] In all figures, common elements are given the same numerical references. DETAILED DESCRIPTION OF THE INVENTION

[0057] 2 and 3 show an example of an apparatus according to one embodiment of the present invention.

[0058] These figures show a device 1 comprising a base 10 and anchoring strips 30 .

[0059] The base 10 has a band-like shape extending in a machine direction MD and a cross direction CD. The longitudinal direction is commonly referred to as the machine direction. The base 10 is arbitrarily defined with an upper surface 12 and a lower surface 14. For ease of explanation, it is assumed that the upper surface 12 and the lower surface 14 are flat or substantially flat. A vertical direction ZZ is defined that is perpendicular to the machine direction MD and the cross direction CD, and thus perpendicular to the upper surface 12 and the lower surface 14 of the base 10.

[0060] The base 10 is typically manufactured by injection molding and / or extrusion, and may be integrally formed with, for example, the fastening elements. In the illustrated embodiment, the base 10 is a woven fabric in which the base and warp threads intertwine. In another embodiment, the base 10 is a knitted fabric in which the base and warp threads intertwine. In these embodiments, the base 10 has an uneven lower surface 14, but rather the threads that make it up form ribs or waves. The base 10 may also be formed from a continuous or discontinuous strip of material.

[0061] The base 10 is typically made of woven monofilament and / or multifilament synthetic yarns. For example, the loop yarns and / or weft yarns and / or warp yarns are monofilament or multifilament yarns, for example multifilament yarns consisting of 2 to 25 filaments, in particular 2 to 15 filaments. The synthetic yarns are typically made of a thermoplastic material. The diameter of these yarns is typically 30 to 600 micrometers, or 70 to 550 micrometers.

[0062] In the illustrated embodiment, a plurality of locking elements 20 extend from the top surface 12 of the base 10. The locking elements 20 are adapted to cooperate with a mating member, such as a complementary or identical locking element, loop, or nonwoven, to provide a self-locking connection. As will be shown below, the locking elements 20 are not required, and the present invention will still have technical effect if the locking elements 20 are not present.

[0063] In the illustrated example, the locking element 20 is formed by a thread that is at least partially disposed within the base 10. More specifically, the thread that forms the locking element 20 is a monofilament thread. The thread that forms the locking element 20 is arranged in a "V" shape and / or a "W" shape within the base 10.

[0064] The illustrated locking elements 20 have a generally mushroom shape. Each includes a stem 22 extending from the top surface 12 of the base 10 and a head 26 formed at the free end 24 of the stem 22. The illustrated head 26 has the shape of a hemisphere or a portion of a sphere. This example is not limiting, and the locking elements 20 may have any other suitable shape. The locking elements 20 may be types other than mushroom-shaped, such as hooks or harpoons manufactured by injection molding and / or extrusion, or may be loops formed by weaving, knitting, and / or other assembly.

[0065] The device 1 also has an anchoring strip 30 secured to the underside 14 of the base 10 .

[0066] The anchoring strip 30 has a support 31 with defined upper and lower surfaces 32 and 34, the names of which are arbitrary and chosen herein to be consistent with the names of the surfaces of the base 10.

[0067] Loops 35 extend from one side of the support 31 and are suitable for forming locking means in the foam material injected against the underside 14 of the base 10. As will be shown below, in this example, the loops 35 extend from the upper surface 32 of the support 31.

[0068] The support 31 usually has a thickness of 30 μm or more and 1000 μm or less, or 50 μm or more and 700 μm or less.

[0069] The loops 35 may extend in a direction perpendicular to the plane formed by the lower surface 14 of the base 10 or in a direction that is not perpendicular.

[0070] The support 31 is usually formed by knitting, for example, one or more threads.

[0071] The anchoring strips 30 may have leg loops extending from the lower surface 34 of the support 31 and / or arranged in the plane of the support 31. The leg loops will typically have a maximum dimension strictly smaller than the loops 35 protruding from the upper surface 32 of the support 31.

[0072] The loops 35, the support 31 and, if applicable, the leg loops are typically formed from the same yarn; therefore, there is typically a continuity of material between the support 31, the loops 35 and, if applicable, the leg loops.

[0073] The loops 35 are typically loop yarns that extend at least partially into the support 31 of the anchoring strip 30. The loops 35 are typically knitted so that they extend at least partially into the support 31 of the anchoring strip 30.

[0074] The loops 35 are typically formed by loop yarns extending from the upper surface 32 of the support 31 .

[0075] The loops 35 are typically arranged in columns and / or rows extending in the cross direction CD and machine direction MD, respectively, with the loops 35 belonging to the same row or column typically being formed by the same continuous loop yarn.

[0076] The anchoring strip 30 is typically formed from threads having a diameter of 30 μm to 600 μm, or 70 μm to 550 μm, inclusive. Using threads of such diameters can prevent the threads from cutting the material surrounding the anchoring strip 30.

[0077] According to one embodiment, the knitted fabric has stitches that connect the loops to one another, for example, so that the legs of adjacent loops cross or touch one another. This structure allows for improved loop retention, which is particularly advantageous in applications where damping is required. Furthermore, this structure provides the mesh with volume and shape memory.

[0078] FIG. 3 shows a schematic diagram of an example of an anchoring strip 30 positioned on the lower surface 14 of the base 10. To improve readability, loops 35 are not shown in this figure. The anchoring strip 30 typically includes multiple warp yarns extending in the machine direction MD and interlacing continuously in the machine direction MD, and multiple weft yarns extending in the cross direction CD, with the warp and weft yarns interwoven. The warp and weft yarns form anchoring elements along the lower surface 14 of the base 10, which may be regularly or irregularly positioned in the machine direction MD and / or the cross direction CD. The weft yarns provide connections between the warp yarns and define a discontinuous pattern in the cross direction CD. While the weft yarns typically extend in the cross direction CD, they may have a non-zero component in the machine direction MD, as shown in FIG. 3. In FIG. 3, the support 31 is represented by a bold line, and the base 10 is represented by a dashed line. In the illustrated example, the warp yarns extend in the machine direction MD and define a plurality of spaced apart crossovers in the cross direction CD. Weft yarns extend between each warp crossover. The warp crossovers are connected only by the weft yarns, and the warp yarns that make up one crossover are separate from the warp yarns that make up another crossover. If the width W of a warp crossover is the maximum dimension of the crossover in the cross direction CD, the crossovers are typically spaced apart by at least 2W, typically at least 3W, in the cross direction.

[0079] The illustrated support 31 thus includes a plurality of warp intersections, spaced apart from one another, and connected to one another by weft threads, which are also spaced apart from one another, thus forming an open structure as opposed to a solid strip.

[0080] As shown schematically in Figure 2, anchoring strip 30 is secured to underside 14 of base 10. However, unlike known devices, anchoring strip 30 is secured to underside 14 of base 10 by loop 35. More specifically, loop 35 defines legs and a head, with the legs connected to upper surface 32 of support 31 and the head forming the end of loop 35 furthest from support 31. The legs of loop 35 typically intersect.

[0081] According to one embodiment, in one loop 35, typically in each loop 35, the two loop portions located between the loop head and the respective loop legs extend in a direction that is not perpendicular to the plane formed by the base and / or in a direction that is not perpendicular to the plane containing the machine direction MD and the cross direction CD.

[0082] The two loop portions disposed between the loop head and loop leg may have the same or different shapes, for example, one may be straight or substantially straight and the other may be curved or substantially curved.

[0083] The anchoring strip 30 is fixed to the underside 14 of the base 10 via the heads of the loops 35. In this manner, the heads of all or some of the loops 35 of the anchoring strip 30 are fixed to the underside 14 of the base 10.

[0084] In the example shown in Figure 2, a fastening means 40, e.g., a layer of adhesive, is shown to secure the loop 35 to the underside 14 of the base 10. It will be understood that this embodiment is not limiting and that any suitable fastening means, e.g., adhesive or glue, may be used. The fastening means 40 and the base 10 are formed of different materials.

[0085] The fastening means 40 typically extend to a height that is less than the maximum height between the anchoring strip 30 and the lower surface 34 of its support 31, or typically less than the height of the loops 35. In this way, the fastening means 40 are spaced apart from the support 31 of the anchoring strip 30. In other words, there is a non-zero distance between the fastening means 40 and the upper surface 32 of the support 31 of the anchoring strip 30. The loops 35 are therefore not completely covered by the fastening means 40, and the loops 35 have a non-zero height that is not covered by the fastening means.

[0086] This arrangement ensures a non-zero spacing between the base 10 and the support 31 of the anchoring strip 30. The loop 35 acts as a spring or damper between the base 10 and the support 31.

[0087] According to one embodiment, the support 31 of the anchoring strip 30 and the base 10 are spaced apart by a distance of between 0.2 mm and 10 mm, or between 0.5 mm and 5 mm, which typically corresponds to the distance between the lower surface 14 of the base 10 and the upper surface 32 of the support 31 of the anchoring strip 30.

[0088] According to one embodiment, the head of the loop is fixed to the lower surface 14 of the base 10 so that it does not protrude beyond the upper surface 12 of the base 10. The loop 35 typically does not penetrate the entire base 10. The loop 35 may penetrate part of the thickness of the base 10, especially if the base 10 is formed by a tangle of fibers or threads.

[0089] According to one embodiment, at least 50% of the loops 35 of the anchoring strip 30 are secured to the underside 14 of the base 10, or typically at least 75%, at least 80%, at least 90%, and in some cases 100% of the loops 35 are secured to the underside 14 of the base 10.

[0090] According to one embodiment, at least 1%, or at least 2%, and at most 25%, in particular at most 20% of the height of loop 35 is fixed to base 10. Here, "fixed to base 10" means a part of loop 35 that is fixed to base 10 by, for example, adhesive or glue and is covered by said adhesive or glue.

[0091] The proposed device has several advantages: if the device comprises locking elements 20, it can in particular avoid the problems mentioned at the outset that are associated with products that are packaged in rolls or directly in boxes after cutting: if the product is packaged in rolls, the locking elements 20 come into contact with the support 31 and not with the loops 35, thus avoiding a self-locking connection during roll packaging.

[0092] Furthermore, the locking properties are maintained within the foam material injected against the underside 14 of the base 10, with the locking provided by the loops 35 and the support 31. More generally, the device may be associated with a material forming an enclosure that at least partially surrounds the anchoring strip 30, typically at least partially surrounding or adapted to surround the loops 35 and / or support 31 of the anchoring strip 30. The enclosure is typically formed of foam, gypsum, and / or concrete. The enclosure typically forms a support or part of a support. A support here refers to an object or material element on which a particularly heavy object rests and is intended to serve as a support or backing for the object. A support in this context is used to support the device or assembly in a state or position of use, depending on the application. More generally, the proposed device is a locking device, and, if it comprises the locking element 20, also a retention device.

[0093] The proposed device may also have advantages in different types of applications.

[0094] For example, device 1 may be used to secure covering material to a surface, such as a floor or wall covering or sheet, which typically is foam, concrete, plaster, or other element intended to be secured to a support, which may be, for example, in the form of a plate. The device is typically overmolded into the material, which forms an enclosure that surrounds all or part of anchoring strip 30, typically loop 35 and / or support 31. As mentioned above, such full or partial enclosure of loop 35 and / or support 31 ensures that the device is locked into the material, or vice versa.

[0095] The anchoring strip 30 has a structure that can generally be described as an open structure. An opening is defined as an open area between two groups or intersections of adjacent warp yarns and between adjacent weft yarns in a plane perpendicular to the machine direction MD and the cross direction CD, as viewed from the underside 34 of the support 31 of the anchoring strip 30. An opening typically has a width of at least 1 mm in this plane. 2 , or at least 1.5 mm 2 , or at least 1.8 mm 2 is defined as an area having a surface area of

[0096] According to one embodiment, the anchoring strip 30 has a length of 1 cm in a plane perpendicular to the machine direction MD and the cross direction CD, i.e., a plane viewed from the lower surface 34 of the support 31 of the anchoring strip 30. 2 Each opening has at least 5 but no more than 100 openings, each of which is at least 1.0 mm 2 or 1 cm 2 Between 5 and 60 per hole, each opening at least 1.5 mm 2 or 1 cm 2 5 to 50 per hole, each opening at least 1.8 mm 2 In Figure 3, an example of the openings in the anchoring strip 30 are represented as a grid. According to one embodiment, the anchoring strip 30 has a surface area of ​​1 cm when viewed from the same perspective as above. 2The opening rate is defined as the ratio of the surface area of ​​the openings in the support 31 to the surface area to be evaluated.

[0097] Such an open structure of the anchoring strip 30, or more precisely of the support 31 of the anchoring strip 30, ensures good penetration of the material, for example the injection material, and thereby ensures good anchoring of the device to materials such as foam, or more generally to any other material that penetrates the anchoring strip 30.

[0098] Figure 4 shows an example of such an application.

[0099] The figure shows that the covering material is secured to the underside 34 of the support 31, here by an adhesive layer 45. The product thus formed can be assembled to a mating element secured to a support, such as a wall, floor, ceiling or the surface of an object.

[0100] The proposed structure of providing a non-zero gap between the base 10 and the support 31 ensures the formation of an air layer between the base 10 and the support 31, and therefore between the base 10 and the covering material 50, thereby providing a damping or insulating function.

[0101] Optionally, this damping or insulating effect can be enhanced by overlapping multiple anchoring strips 30 .

[0102] Figure 5 shows a variant of Figure 4, in which the device 1 is fixed to a support 60. The covering 50 is fixed to a counter part 54, here a counter part comprising a loop, by means of an adhesive layer 52. The counter part 54 is suitable for forming a self-locking connection with the device 1 by engaging with the locking element 20.

[0103] This variant offers similar advantages to the embodiment shown in connection with FIG.

[0104] As an alternative to the embodiment shown in Figure 5, the base 10 may form the covering material, Figure 6 shows such an alternative diagrammatically.

[0105] In this type of embodiment, the base 10 typically does not have the locking elements 20. This alternative therefore takes advantage of the properties of the anchoring strips 30 to create an air gap between the base 10 and the support 60 that form the cladding, thereby providing thermal insulation and damping functions. The base 10 may also include a moisture-proof film fixed to its lower surface 14 or may be integrated within the base 10.

[0106] In such an embodiment, the proposed device constitutes a versatile locking device, which in particular can fulfil thermal and / or acoustic and / or mechanical and / or light and / or air and / or moisture insulating functions in a multitude of applications with a simplified and versatile structure.

[0107] Figures 7 and 8 show schematic variations of the embodiment shown in Figure 4. It will be understood that similar variations can be made with respect to the embodiment shown in Figure 5 or Figure 6. As in Figure 3, in Figure 8 the support 31 is shown in bold and the base 10 in dashed lines, and the loop 35 is not shown in this figure to improve readability.

[0108] FIG. 7 shows the overlapping of two anchoring strips 30 in the same direction, here the machine direction MD. The two anchoring strips are identified as 30a and 30b, respectively, by adding the suffix a or b to the numerical references already used in FIGS. 2 and 4. Their components are also identified similarly. An additional layer of adhesive 41 secures anchoring strip 30b to the underside 34a of the support 31a of anchoring strip 30a. More specifically, loop 35b of anchoring strip 30b is secured to the underside 34a of the support 31a of anchoring strip 30a by adhesive 41. This configuration maintains the advantages described above, particularly with reference to FIG. 2, and in particular prevents locking elements 20 from engaging with the loops of anchoring strips 30a and 30b.

[0109] Therefore, the thickness of the air layer between the base 10 and the support 31, and therefore between the base 10 and the covering material 50, is increased compared to the embodiments shown in Figures 4, 5 or 6, thereby improving the insulating and damping effect.

[0110] It is understood that this embodiment can be generalized to a laminated structure of any number of anchor strip layers using the device according to the present invention. Each formed anchor strip layer is, for example, composed of anchor strips 30 aligned to extend in the same direction, with the anchor strips of two laminated layers typically overlapping and aligned with each other. Alternatively, the anchor strips of different layers laminated in this manner may be arranged crosswise. For example, a configuration may be proposed in which a first layer is formed of anchor strips extending in the machine direction MD and a second layer is formed of anchor strips extending in the cross direction CD.

[0111] 8 shows a schematic diagram of another example of the overlap of two anchoring strips 30a and 30b, where the anchoring strip 30a forming the first thickness is aligned in the machine direction MD and the anchoring strip 30b forming the second thickness is aligned in the cross direction CD.

[0112] In such applications, a vapor barrier film is typically interposed between the anchoring strip 30 and the covering material 50, or, where applicable, between two overlapping anchoring strips 30. The vapor barrier film is typically held in place by two fastening means on either side of it, such as two layers of adhesive or glue.

[0113] While the present invention has been described with reference to particular embodiments, it will be apparent that modifications and variations can be made to these embodiments without departing from the general scope of the invention as defined by the claims. In particular, individual features of the different embodiments shown or mentioned can be combined in other additional embodiments. The present specification and drawings are therefore to be considered illustrative rather than restrictive.

[0114] It is also clear that all features described in relation to a method, either alone or in combination, can be applied to an apparatus, and conversely, all features described in relation to an apparatus, either alone or in combination, can be applied to a method.

Claims

1. A device (1) intended to be at least partially covered by an outer covering, a base (10) extending in a machine direction (MD) and a cross direction (CD) and having an upper surface (12) and a lower surface (14) opposite the upper surface (12); an anchoring strip (30) intended to be at least partially covered by an outer jacket, comprising: a support (31) formed by crossing warp and weft yarns to form a plurality of crossings of warp yarns continuous in a machine direction (MD) and spaced apart in a cross direction (CD); and a plurality of loops (35) extending from the support (31), each loop (35) including two legs extending from the support and a head forming an opposite end of the loop (35) remote from the legs; Fixing means (40); Equipped with the fixing means (40) are configured to fix the anchoring strip (30) to the underside of the base (10) via the heads of at least some of the loops (35), in particular to define a non-zero distance between the base (10) and the support (31) of the anchoring strip (30), the non-zero distance being in particular intended to receive an outer covering for fixing the device; and wherein the fixing means (40) and the base (10) are made of different materials. Device (1).

2. The support (31) and the base (10) of the anchoring strip (30) are spaced apart by a distance of 0.2 mm to 10 mm, or 0.5 mm to 5 mm.

2. The device (1) according to claim 1.

3. The head of the loop (35) is fixed to the lower surface (14) of the base (10) so as not to protrude from the upper surface (12) of the base (10).

3. Device (1) according to any one of claims 1 or 2.

4. characterized in that at least 50% of the loops (35) of the anchoring strip (30) are fixed to the lower surface (14) of the base (10), or typically at least 75% of the loops (35) are fixed to the lower surface (14) of the base (10), A device (1) according to any one of claims 1 to 3.

5. characterised in that the base (10) consists of monofilament and / or multifilament synthetic threads, which are intersected in particular by weaving and / or knitting, A device (1) according to any one of claims 1 to 4.

6. The synthetic yarn is made of a thermoplastic material.

6. The device (1) according to claim 5.

7. The yarn has a diameter of 30 micrometers to 600 micrometers, or 70 micrometers to 550 micrometers.

7. Apparatus according to claim 5 or 6.

8. The support (31) of the anchoring strip (30) extends continuously in the machine direction (MD), A device (1) according to any one of claims 1 to 7.

9. a plurality of the anchoring strips (30) are stacked in a direction perpendicular to the lower surface (14) of the base (10) so as to define a plurality of layers of the anchoring strips (30); A device (1) according to any one of claims 1 to 8.

10. characterised in that the anchoring strips (30) of the stacked layers are fixed to one another by means of an adhesive (41), 10. The apparatus of claim 9.

11. characterised in that the upper surface (12) of the base (10) is provided with a locking element (20), 11. An apparatus according to any one of claims 1 to 10.

12. The base (10) is made of woven and / or knitted fabric, and each locking element (20) includes a stem (22) and a head (26); the stem (22) extends from the top surface (12) of the base (10), and the head (26) is formed at a free end (24) of the stem (22) facing the top surface (12) of the base (10); characterised in that the stem (22) of the locking element (20) extends at least partially within the woven and / or knitted fabric of the base (10).

12. The device (1) according to claim 11.

13. The fixing means is an adhesive or glue.

13. An apparatus according to any one of claims 1 to 12.

14. 14. An assembly comprising a device according to any one of claims 1 to 13 and a jacket, characterized in that the jacket at least partially surrounds the anchoring strip (30), in particular at least partially surrounds the loop (35) and / or the support (31) of the anchoring strip (30). assembly.

15. the outer covering is made of foam and / or gypsum and / or concrete and / or crosslinkable plastic material and / or thermosetting material, 15. The assembly of claim 14.

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