Improved anchoring device for foam covering

Abstract

An apparatus (1) comprising: a base (10) extending in a machine direction (MD) and a transverse direction (CD), having an upper surface (12) and a lower surface (14) opposite the upper surface (12); an anchoring strip (30) comprising a backing (31) and a plurality of loops (35) extending from the backing (31), the backing comprising interwoven warp and weft yarns, each loop (35) comprising two legs extending from the backing and a head forming an end of the loop (35) opposite the legs; an adhesive (40) fixing the anchor strip (30) to the lower surface of the base (10) via the head of the ring (35) so as to define a non-zero spacing between the base (10) and the backing (31) of the anchor strip (30), the adhesive (40) and the base (10) being formed of different materials.

Description

Technical Field

[0001] The present disclosure relates to the field of anchoring systems, particularly for securing trim to foam. Background Art

[0002] Self-gripping retention systems are commonly used to make anchoring systems for securing foam trim pieces, such as vehicle seats or furniture upholstery.

[0003] A common system comprises a base having an upper surface and an opposing lower surface, from which a retaining element projects. The retaining element is typically an element such as a hook, or more generally, an element adapted to form a self-gripping connection with a counterpart such as a loop. The lower surface is provided with a loop assembly. The device is integrated into the product during a foam covering operation that partially surrounds the base. The loop ensures that the device is securely anchored in the foam, which is injected in liquid form and thus penetrates the loop.

[0004] However, it should be understood that the retaining element must be protected during the foaming operation. More specifically, foam deposits on the retaining element can render it inoperative. A common solution is to apply a protective coating to the upper surface of the base and subsequently remove the protective coating after the foaming operation. However, this approach is complex to implement; in particular, the coating removal operation is problematic in terms of industrialization.

[0005] Alternative methods have been devised to remove this protective coating. However, this creates problems associated with packaging the product in rolls ready for cutting or directly in boxes after cutting; the retaining element then engages the ring, which is restrictive when handling the product.

[0006] Figure 1 An example of such a known arrangement is shown.

[0007] The figure shows a device 100 comprising a base 110 extending in the main direction MD and the cross-machine direction CD. The base has an upper surface 112 and a lower surface 114. Extending from the upper surface 112 of the base 110 is a retaining element 120, which as shown is generally referred to as having a mushroom shape and is adapted to form a self-gripping connection with a counterpart, such as a ring or a complementary retaining element, which may be identical or different.

[0008] An anchor strip 130 is secured to the lower surface of the base 110. The anchor strip 130 has a backing 131 defining an upper surface 132 and a lower surface 134. A loop 135 extends from the lower surface 134 to form an anchor in the foam as previously described.

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

[0010] As previously mentioned, the retaining element 120 is usually encased in a protective coating 150 applied to the upper surface 112 of the base 110 so as to encapsulate all or part of the retaining element 120. This protective coating 150 must then be removed after a foam covering operation designed to anchor the device 100 in the foam element, this anchoring being achieved in particular by integrating the ring 135 into the foam.

[0011] As mentioned above, there are problems and limitations in removing this protective coating 150. Removing this protective coating during the foam covering operation creates problems with the protection of the retaining element 120 and also creates problems with packaging because the retaining element 120 engages the ring 135 when the product is rolled ready for cutting or loosely packed in a box after cutting.

[0012] Other anchoring systems are commonly used to secure multiple layers together, for example to provide insulation, in particular thermal and / or sound and / or mechanical and / or light and / or air and / or moisture insulation. Depending on the intended application and / or the performance to be achieved, commonly used systems have various structures and are made of very different materials.

[0013] Conventional systems often consist of stacking multiple layers made of different materials and having different structures to achieve the desired performance for an application, but this structure cannot be used for different functions and / or applications, or they may consist of a single layer with a variety of structures. It should be understood that these systems have limitations due to their specific characteristics. Therefore, there is a need to produce systems with simple structures that can be used in a variety of applications.

[0014] Therefore, the present disclosure is directed to at least partially addressing these issues. Summary of the Invention

[0015] To at least partially address the above issues, the present disclosure relates to:

[0016] A device, in particular intended to be at least partially enclosed in an inclusion body, comprising:

[0017] a base extending in the machine direction and in the transverse direction, having an upper surface and a lower surface opposite the upper surface, the upper surface being provided with the retaining element,

[0018] - an anchoring strip, in particular intended to be at least partially enclosed in an envelope, said anchoring strip comprising:

[0019] * a backing comprising interwoven warp and weft yarns, the backing forming a plurality of interlaces of continuous warp yarns, the plurality of interlaces being continuous in the machine direction and spaced apart in the cross direction,

[0020] * a plurality of loops extending from the backing, each loop comprising two legs and a head, the legs extending from the backing and the head forming an end of the loop opposite the legs,

[0021] It is characterized in that

[0022] The device comprises fixing means for fixing the anchoring strip to the lower surface of the base via at least some of the heads of the rings, in particular in order to define a non-zero spacing between the base and the backing of the anchoring strip, said non-zero spacing being particularly intended to receive an envelope for fixing the device,

[0023] And the fixing device and the base are formed of different materials.

[0024] The device thus has a backing that has less residual deformation than the prior art and has better resistance to deformation, in particular better resistance to compression, as well as better distribution of forces applied to the backing of the anchoring strip and / or potentially better resistance to pulling and / or shearing after it has been anchored in a material.

[0025] According to one example, the backing and base of the anchor strip are spaced apart by a distance between 0.2 mm and 10 mm or between 0.5 mm and 7 mm, in some cases between 0.5 mm and 5 mm, particularly between 2.5 mm and 5 mm.

[0026] According to one example, the anchoring strip has a grammage per unit area between 25 and 350 g / m2, in particular between 30 and 220 g / m2. 2 Between or 50 to 220g / m 2 The weight per unit area is between .

[0027] According to one example, the anchor bar has a strength of 1 to 500 kg / m 3 between, especially 2 to 200 kg / m 3 Between 3 and 100 kg / m 3 The apparent density between the two is calculated as the ratio of the grammage per unit area (in g / m2) to the height of the anchoring strip (in mm).

[0028] According to one example, the two loop portions arranged between the loop head and the respective loop leg extend in a direction not perpendicular to a plane formed by the base and / or not perpendicular to a plane containing the machine direction and the transverse direction.

[0029] According to one example, the two ring portions arranged between the ring head and the respective ring leg have different shapes, eg one is straight or substantially straight and the other is curved or substantially curved.

[0030] According to one example, the backing has a thickness between 30 and 1200 micrometers, in particular between 50 and 800 micrometers.

[0031] According to one example, the loop comprises a crossing of the legs.

[0032] According to one example, the anchoring strip (particularly the backing) comprises, viewed perpendicularly to a plane containing the machine direction and the transverse direction, a number of openings of 5 to 100 openings per square centimeter, in particular each opening having a diameter of at least 1.0 mm. 2 or a surface area comprising from 5 to 60 openings per square centimeter, each opening having at least 1.5 mm 2 or a surface area comprising 5 to 50 openings per square centimeter, each opening having at least 1.8 mm 2 According to one example, the opening has a general shape such as a square, rectangle, trapezoid, circle, etc. In certain cases, the shape of the opening has an asymmetry in the machine direction and / or in the transverse direction in order to facilitate the insertion of an envelope, for example made of foam and / or plaster and / or concrete and / or cross-linked plastic material and / or thermosetting material, into the anchoring strip.

[0033] According to one embodiment, the anchoring strip (in particular the backing) has an opening ratio (i.e. the ratio of the surface of the open backing to the surface under consideration) of between 50% and 90% per square centimeter, in particular between 60% and 90% per square centimeter, more in particular between 70% and 90% per square centimeter, when viewed perpendicular to a plane containing the machine direction and the transverse direction.

[0034] According to one example, the head of the ring is fixed to the lower surface of the base without being able to protrude from the upper surface of the base.

[0035] According to one example, at least 50% of the loop of the anchor strip is fixed to the lower surface of the base, or typically at least 75% of the loop of the anchor strip is fixed to the lower surface of the base, or in some cases 100% of the loop of the anchor strip is fixed to the lower surface of the base.

[0036] According to one example, the upper surface of the base is provided with a retaining element.

[0037] According to one example, the anchoring strip comprises a plurality of leg loops arranged in the plane of the backing and / or protruding from the lower surface of the backing (or of the anchoring strip).

[0038] According to one example, the leg loops have a shape whose dimensions are all smaller than the dimensions of the loop protruding from the upper surface.

[0039] According to one example, the leg loops and the loops protruding from the upper surface are made of the same yarn, so there is generally continuity of material between the leg loops and the loops protruding from the upper surface.

[0040] According to one embodiment, the base is formed of a woven and / or knitted material, each retaining element comprising a stem and a head,

[0041] The stem extends from the upper surface of the base, and the head is formed at a free end of the stem opposite to the upper surface of the base.

[0042] The stem of the retaining element extends at least partially into the woven and / or knitted material of the base.

[0043] The base is formed from monofilament and / or multifilament synthetic yarns, for example multifilament yarns having a filament count of 2 to 25 filaments, in particular 2 to 15 filaments, which are typically interwoven, in particular by weaving and / or knitting.

[0044] The synthetic yarn is made of, for example, at least one or more thermoplastic materials.

[0045] The yarns typically have a diameter between 30 and 600 microns, or between 70 and 550 microns.

[0046] According to one example, the backing of the anchor strip extends continuously in the machine direction.

[0047] The fixing means is usually an adhesive or glue.

[0048] According to one example, the device comprises a plurality of anchoring strips superposed so as to define a plurality of layers of anchoring strips in a direction perpendicular to the lower surface of the base.

[0049] According to one example, the anchoring strips of each successive superposed layer extend in the vertical direction.Thus, the device may have, for example, a superposition of layers, wherein the anchoring strips extend continuously in the machine direction and in the transverse direction.

[0050] According to one example, the anchoring strips of the superposed layers are fixed to each other by means of an adhesive.

[0051] According to one example, the upper surface of the base is provided with retaining elements, for example retaining elements for forming a self-gripping fixture, said retaining elements being formed in particular by weaving, knitting, injection moulding or extrusion moulding.

[0052] According to one embodiment, the base is formed of a woven and / or knitted material, each retaining element comprising a stem and a head,

[0053] The stem extends from the upper surface of the base, and the head is formed at a free end of the stem opposite to the upper surface of the base.

[0054] The stem of the retaining element extends at least partially into the woven and / or knitted material of the base.

[0055] According to one example, the upper surface of the base is provided with a layer comprising a vapor barrier film and / or an airtight film and / or kraft paper and / or a wallcovering and / or a plasterboard sheet and / or a cardboard sheet and / or a decorative or other covering.

[0056] The invention also relates to an assembly comprising an envelope and a device as defined above, wherein the envelope at least partially surrounds the anchoring strip, in particular at least partially surrounds the ring of the anchoring strip and / or the backing of the anchoring strip.

[0057] For example, the envelope is formed from a foam, plaster or concrete material and / or a cross-linked plastic and / or a thermosetting material. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] The invention and its advantages will be better understood on reading the following detailed description of various embodiments of the invention, presented as non-limiting examples.

[0059] [ Figure 1 ] Figure 1 An example of a known arrangement is shown.

[0060] [ Figure 2 ] Figure 2 An example of an apparatus according to an aspect of the present invention is shown.

[0061] [ Figure 3 ] Figure 3 Shown as Figure 2 Another view of the device shown.

[0062] [ Figure 4 ] Figure 4 An exemplary application is shown.

[0063] [ Figure 5 ] Figure 5 Another exemplary application is shown.

[0064] [ Figure 6 ] Figure 6 Another exemplary application is shown.

[0065] [ Figure 7 ] Figure 7 Another exemplary application is shown.

[0066] [ Figure 8 ] Figure 8 Another exemplary application is shown.

[0067] Throughout the drawings, common elements are identified by the same reference numerals. DETAILED DESCRIPTION

[0068] Figure 2 and Figure 3 An example of an apparatus according to an aspect of the present invention is shown.

[0069] These figures show a device 1 comprising a base 10 and an anchoring strip 30 .

[0070] The base 10 has a strip shape extending in the machine direction MD and the cross direction CD. The longitudinal direction is generally referred to as the machine direction. The upper surface 12 and the lower surface 14 are arbitrarily defined with respect to the base 10. For the purposes of illustration, the upper surface 12 and the lower surface 14 are assumed to be flat or substantially flat. The vertical direction ZZ is defined as perpendicular to the machine direction MD and the cross direction CD, and therefore perpendicular to the upper surface 12 and the lower surface 14 of the base 10.

[0071] The base 10 is typically manufactured by injection molding and / or extrusion and is, for example, formed integrally with the retaining element. In the embodiment corresponding to the illustrated example, the base 10 is a woven fabric comprising interwoven ground yarns and warp yarns. In an alternative embodiment, the base 10 is a knitted fabric comprising interwoven ground yarns and warp yarns. In such an embodiment, the base 10 therefore does not have a flat lower surface 14, and the yarns forming the base form undulations or waves. The base 10 can also be formed from continuous or discontinuous strips of material.

[0072] The base 10 is typically formed from 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 having a filament count of 2 to 25, particularly 2 to 15. The synthetic yarns are, for example, made of a thermoplastic material. The yarn diameter is typically between 30 and 600 microns, or between 70 and 550 microns.

[0073] In the embodiment shown, a plurality of retaining elements 20 extend from the upper surface 12 of the base 10. The retaining elements 20 are adapted to cooperate with a counterpart, such as a complementary or identical retaining element, loop, or non-woven material, to provide a self-gripping connection. As will be seen below, the retaining elements 20 are optional, and the present invention can also have technical effects without such retaining elements 20.

[0074] In the example shown, the retaining element 20 is formed by yarns at least partially arranged in the base 10. More particularly, the yarns forming the retaining element 20 are monofilament yarns. The yarns forming the retaining element 20 are arranged in the base 10 in a "V" and / or "W" formation.

[0075] The retaining elements 20 shown are generally mushroom-shaped. They each include a stem 22 extending from the upper surface 12 of the base 10 and a head 26 formed at the free end 24 of the stem 22. As shown, the head 26 has a hemispherical or partially spherical shape. It should be understood that this example is limiting and that the retaining elements 20 can have any suitable geometric shape. The retaining elements 20 can be of a type other than a mushroom, such as a hook made by injection and / or extrusion, and / or a harpoon shape, or even a loop, such as a loop formed by weaving, knitting, and / or other components.

[0076] The device 1 also has an anchoring strip 30 fixed to the lower surface 14 of the base 10 .

[0077] The anchor strip 30 has a backing 31 defining an upper surface 32 and a lower surface 34 , the designations being arbitrary and chosen here to correspond with the designations of the surfaces of the base 10 .

[0078] From one surface of the base 31 extend loops 35, which are suitable for forming anchoring means in the foam material injected against the lower surface 14 of the base 10. As will be seen below, the loops 35 here extend from the upper surface 32 of the backing 31.

[0079] The backing 31 typically has a thickness between 30 and 1000 μm or between 50 and 700 μm.

[0080] The ring 35 may extend in a direction perpendicular to the plane formed by the lower surface 14 of the base 10 , or in a direction not perpendicular to the plane formed by the lower surface 14 of the base 10 .

[0081] The base portion 31 is typically formed of, for example, a knitted fabric having one or more yarns.

[0082] The anchor strip 30 may have leg loops extending from the lower surface 34 of the base 31 and / or extending in the plane of the backing 31. The maximum dimension of the leg loops is typically strictly smaller than the loops 35 protruding from the upper surface 32 of the backing 31.

[0083] The loops 35, backing 31, and (where applicable) the leg loops are typically formed from the same yarn; thus, there can typically be continuity of material between the backing 31, loops 35, and (where applicable) the leg loops.

[0084] The loop 35 is typically a loop yarn that extends at least partially into the backing 31 of the anchor strip 30. The loop 35 is typically knitted so as to extend at least partially into the backing 31 of the anchor strip 30.

[0085] The loops 35 are typically formed from loop yarn and extend from the upper surface 32 of the backing 31 .

[0086] The loops 35 are generally arranged in rows and / or columns extending in the cross direction CD and the machine direction MD, respectively. The loops 35 in the same row or column are generally formed by the same continuous loop yarn.

[0087] The anchor strip 30 is typically formed from yarn having a diameter between 30 and 600 μm or between 70 and 550 μm. The use of yarn having such a diameter prevents the yarn from cutting the material that will subsequently enclose the anchor strip 30.

[0088] According to one example, a knitted fabric has stitches whose loops are connected together, for example by crossing the legs of adjacent loops, or are in contact with each other. This structure allows for improved loop retention, which is particularly advantageous for applications seeking a damping effect. Furthermore, this structure provides mesh volume and a shape memory effect.

[0089] Figure 3 An example of an anchoring strip 30 arranged on the lower surface 14 of the base 10 is schematically shown. In order to improve readability, the loop 35 is not shown in this figure. The anchoring strip 30 generally comprises a plurality of warp yarns and a plurality of weft yarns, each warp yarn generally extending in the machine direction MD and forming a continuous interweaving in the machine direction MD, and a plurality of weft yarns generally extending in the cross direction CD, the warp yarns and the weft yarns being interwoven. The warp yarns and the weft yarns form anchoring elements and can be positioned on the lower surface 14 of the base 10 in a regular or irregular manner along the main direction MD and / or the cross direction CD. The weft yarns provide a connection between the individual warp yarns and define a discontinuous pattern along the cross direction CD. The weft yarns generally extend in the cross direction CD, but can also have a non-zero component in the machine direction MD, such as Figure 3 As shown. Figure 3 In the example shown, the backing 31 is represented by bold lines, while the base 10 is represented by dashed lines. In the example shown, the warp yarns thus define a plurality of interlaces, each interlace extending in the machine direction (MD) and spaced apart in the cross-machine direction (CD). Weft yarns extend between each interlace of the warp yarns. Thus, the warp interlaces are connected only by the weft yarns. The warp yarns forming one warp interlace are separated from the warp yarns forming another warp interlace. Given that the width W of a warp interlace is equal to the maximum dimension of that interlace in the cross-machine direction (CD), the individual warp interlaces are typically spaced apart in the cross-machine direction (CD) by a distance greater than or equal to 2W, and typically greater than or equal to 3W.

[0090] Thus, the illustrated base portion 31 comprises a number of warp interlaces that are spaced apart from one another and connected together by weft yarns that are also spaced apart from one another, thereby forming an open structure, as opposed to a solid strip.

[0091] like Figure 2As shown, the anchor strip 30 is secured to the lower surface 14 of the base 10. However, unlike known devices, the anchor strip 30 is secured to the lower surface 14 of the base 10 by a loop 35. More specifically, the loop defines a leg connected to the upper surface 32 of the base 31 and a head forming the end of the loop 35 farthest from the backing 31. The legs of the loop 35 are generally cross-shaped.

[0092] According to one example, for one ring 35 (typically for each ring 35), the two ring portions arranged between the ring head and the respective ring legs extend in a direction that is not perpendicular to the plane formed by the base and / or not perpendicular to the plane containing the machine direction MD and the cross direction CD.

[0093] The two ring parts arranged between the ring head and the ring leg can have the same or different shapes respectively. For example, one can be straight or substantially straight, and the other can be curved or substantially curved.

[0094] The anchoring strip 30 is fixed to the lower surface 14 of the base 10 via the heads of the loops 35. In this way, all or some of the heads of all or some of the loops 35 of the anchoring strip 30 are fixed to the lower surface 14 of the base 10.

[0095] exist Figure 2 In the example shown, a fixing means 40 (e.g., a layer of adhesive) is shown for fixing the ring 35 to the lower surface 14 of the base 10. It should be understood that this embodiment is not limiting and any suitable fixing means, such as adhesive or glue, may be used. The fixing means 40 and the base 10 are formed of different materials.

[0096] The height to which the securing device 40 extends is typically less than the maximum height separating the anchor strip 30 from the lower surface 34 of the backing 31 of the anchor strip 30, or generally less than the height of the loop 35. Thus, the securing device 40 is spaced a distance from the backing 31 of the anchor strip 30. In other words, there is a non-zero distance between the securing device 40 and the upper surface 32 of the backing 31 of the anchor strip 30. Consequently, the loop 35 is not completely enclosed by the securing device 40; thus, the loop 35 has a non-zero height that is not enclosed by the securing device.

[0097] This configuration therefore ensures a non-zero spacing between the base 10 and the backing 31 of the anchor strip 30. The ring 35 acts as a spring or damper between the base 10 and the backing 31.

[0098] According to one example, the backing 31 of the anchoring strip 30 is spaced apart from the base 10 by a distance between 0.2 mm and 10 mm or between 0.5 mm and 5 mm. This spacing generally corresponds to the distance between the lower surface 14 of the base 10 and the upper surface 32 of the backing 31 of the anchoring strip 30.

[0099] According to one embodiment, the head of the loop is fixed to the lower surface 14 of the base 10 and therefore cannot protrude from the upper surface 12 of the base 10. The loop 35 generally does not pass through the entire base 10. The loop 35 may partially penetrate the thickness of the base 10, especially if the base 10 is formed from an entanglement of fibers or yarns.

[0100] According to one example, at least 50% of the loop 35 of the anchor strip 30 is fixed to the lower surface 14 of the base 30, or typically at least 75% of the loop 35 of the anchor strip 30 is fixed to the lower surface 14 of the base 30, or at least 80% of the loop 35 of the anchor strip 30 is fixed to the lower surface 14 of the base 30, or at least 90% of the loop 35 of the anchor strip 30 is fixed to the lower surface 14 of the base 30, and in one case, 100% of the loop 35 of the anchor strip 30 is fixed to the lower surface 14 of the base 30.

[0101] According to one example, at least 1% of the height of the ring 35 is fixed to the base 10, or at least 2% and at most 25%, in particular at most 20%, of the height of the ring 35 is fixed to the base 10. By fixed to the base 10, it is meant that a portion of the ring 35 is fixed to the base 10 by an adhesive or glue and is, for example, encapsulated by the adhesive or glue.

[0102] The proposed device has several advantages. When the device is provided with a retaining element 20, the problems mentioned in the introduction and associated with packaging products in rolls or directly in boxes after cutting can be avoided. When the product is packaged in rolls, the retaining element 20 is in contact with the backing 31 and not with the ring 35, thus preventing a self-gripping connection during roll packaging.

[0103] Furthermore, the anchoring properties of the foam material injected against the lower surface 14 of the base 10 are maintained; the anchoring is provided by the ring 35 and the backing 31. More generally, the device can be associated with a material forming an envelope that at least partially surrounds the anchoring strip 30, typically at least partially surrounding or encapsulating the ring 35 of the anchoring strip 30 and / or the backing 31 of the anchoring strip 30. The envelope is typically formed of foam, plaster and / or concrete. The envelope typically forms a support or part of a support, which here refers to an object or material element on which something (especially a heavy object) rests, intended to serve as a support or backing for something. Depending on the application, the support is used here to support the device or component in its use configuration or position. More generally, the proposed device is therefore an anchoring device, and in the case where it has a retaining element 20, the proposed device can also be a retaining device.

[0104] The proposed device also has advantages in different types of applications.

[0105] For example, the device 1 can be used to fix a covering to a surface, such as a floor or wall covering, or for a seat, typically foam, concrete, plaster or any other element for fixing to a support, and which can be in the form of a plate, for example. The device is typically overmolded in a material forming an envelope that surrounds all or part of the anchoring strip 30, typically all or part of the loop 35 of the anchoring strip 30 and / or all or part of the backing 31 of the anchoring strip 30. As previously mentioned, this complete or partial encapsulation of the loop 35 and / or backing 31 of the anchoring strip 30 ensures that the device is anchored in the material, and vice versa.

[0106] The anchoring strip 30 generally has a structure that can be described as open. In a plane perpendicular to the machine direction MD and the cross direction CD, as viewed from the lower surface 34 of the backing 31 of the anchoring strip 30, an open area is defined as an open area between two groups or interlaces of adjacent warp yarns, and between two adjacent weft yarns. An open area is generally defined as an open area having at least 1 mm in this plane. 2 , or at least 1.5mm 2 , or at least 1.8mm 2 The surface area of ​​the area.

[0107] According to one example, in a plane perpendicular to the machine direction MD and the cross direction CD, viewed from the lower surface 34 of the backing 31 of the anchoring strip 30, the anchoring strip 30 has: a number of openings of 5 to 100 openings per square centimeter, each opening having a thickness of at least 1.0 mm; 2 or a number of openings of 5 to 60 openings per square centimeter, each opening having a surface area of ​​at least 1.5 mm 2 or a number of openings of 5 to 50 openings per square centimeter, each opening having a surface area of ​​at least 1.8 mm 2 The surface area of Figure 3 , an example of openings in the anchoring strip 30 is represented by a grid. According to one example, in a plane perpendicular to the machine direction MD and perpendicular to the cross direction CD, seen from the lower surface 34 of the backing 31 of the anchoring strip 30, the anchoring strip 30 has an opening ratio of between 50% and 90% per square centimeter, in particular between 60% and 90% per square centimeter, more particularly between 70% and 90% per square centimeter, the opening ratio being defined as the ratio between the surface area of ​​the openings in the backing 31 and the surface area under consideration.

[0108] This open structure of the anchoring strip 30 (or more precisely of the backing 31 of the anchoring strip 30 ) ensures good penetration of material (e.g. injection material) and therefore good anchoring of the device in materials such as foam or more generally any other material that penetrates the anchoring strip 30 .

[0109] Figure 4 Such an application is shown.

[0110] The figure shows the coating fixed to the lower surface 34 of the base 31, in this case by means of an adhesive layer 45. The product thus formed can be assembled onto a counterpart fixed to a support such as a wall, floor, ceiling or surface.

[0111] The proposed structure provides a non-zero spacing between the base 10 and the backing 31, ensuring that an air gap is formed between the base 10 and the backing 31, and thus between the base 10 and the coating 50, thereby providing a damping or insulating function.

[0112] Optionally, the damping or insulating effect can be enhanced by stacking several anchoring strips 30 .

[0113] Figure 5 Shown Figure 4 A variant in which the device 1 is fixed to a support 60. The cover 50 is fixed to a counterpart 54, in this case a ring, by means of an adhesive layer 52. The counterpart 54 is suitable for forming a self-gripping connection with the device 1 by engaging the retaining element 20.

[0114] This variant provides the same Figure 4 The same advantages apply to the embodiment shown.

[0115] As Figure 5 As an alternative to the embodiment shown, the base 10 may form a cover. Figure 6 This alternative is shown schematically.

[0116] In this type of embodiment, the base 10 generally does not have a retaining element 20. This alternative therefore exploits the properties of the anchoring strips 30 to create an air gap between the support 60 and the coated base 10, thereby providing insulation and damping functions. Subsequently, the base 10 may include a vapor barrier membrane fixed to its lower surface 14 or integrated into the base 10.

[0117] In this embodiment, the proposed device forms a multifunctional anchoring device, allowing it to perform insulation functions, in particular thermal and / or acoustic and / or mechanical and / or light and / or air and / or moisture insulation, with a simplified and multifunctional structure for multiple applications.

[0118] Figure 7 and Figure 8 Schematically shows Figure 4 Alternatives to the illustrated embodiments. It should be understood that with reference to Figure 5 or Figure 6 The embodiment shown can produce similar alternatives. Figures 3 to 8As shown, the backing 31 is shown in bold, the base 10 is shown in dashed, and the ring 35 is not shown in this figure to improve legibility.

[0119] Figure 7 The stacking of two anchoring strips 30 in the same direction (in this case the machine direction MD) is shown. The two anchoring strips are denoted by reference numerals 30a and 30b, and their respective elements are denoted by reference numerals 30a and 30b. Figure 2 and Figure 4 The same reference numerals as already used in the present invention are denoted by adding the suffix a or b. An additional adhesive layer 41 secures the anchor strip 30b to the lower surface 34a of the base 31a of the anchor strip 30a. More specifically, the loop 35b of the anchor strip 30b is secured to the lower surface 34a of the base 31a of the anchor strip 30a by means of the adhesive 41. This configuration can maintain the above-mentioned Figure 2 The described effect is achieved and in particular it is possible to prevent the retaining element 20 from engaging with the loops of the anchoring strips 30a and 30b.

[0120] Therefore, with Figure 4 、 Figure 5 or Figure 6 Compared to the embodiment shown, the thickness of the air gap between the base 10 and the backing 31 (and therefore between the base 10 and the cover 50) is increased, which increases the insulating and damping effect.

[0121] It should be understood that this embodiment can be extended to any number of superimposed layers of anchoring strips using the apparatus according to the present invention. The individual layers of anchoring strips thus formed can, for example, be formed from anchoring strips 30 that are aligned and therefore extend in the same direction, such that the anchoring strips of two superimposed layers generally overlap and align with one another. Alternatively, the anchoring strips of different layers superimposed in this manner can be arranged so that they intersect. For example, a configuration can be provided in which a first layer is formed from anchoring strips extending in the machine direction MD, while a second layer is formed from anchoring strips extending in the cross direction CD.

[0122] Figure 8 Another example of stacking two anchor strips 30a and 30b is schematically shown. In this example, a plurality of anchor strips 30a forming a first thickness are arranged in the machine direction MD, while a plurality of anchor strips 30b forming a second thickness are arranged in the cross direction CD.

[0123] In such applications, the vapor barrier membrane may typically be inserted between the anchor strip 30 and the cover 50, or, where applicable, between two overlapping anchor strips 30. The vapor barrier membrane is typically held in place by two fixing means, such as two layers of adhesive or glue, on either side of the vapor barrier membrane.

[0124] Although the present invention has been described with reference to specific exemplary embodiments, it will be apparent that modifications and variations may be made to these examples without departing from the overall scope of the invention as defined by the claims. In particular, the various features of the various embodiments shown or mentioned may be combined in further embodiments. The description and drawings are therefore to be regarded as illustrative rather than restrictive.

[0125] It is also obvious that all features described with reference to the method can be transferred to the device individually or in combination, and conversely, all features described with reference to the device can be transferred to the method individually or in combination.

Claims

1. A device (1), particularly intended to be at least partially enclosed in an inclusion complex, comprising: a base (10) extending in the machine direction (MD) and in the cross direction (CD), having an upper surface (12) and a lower surface (14) opposite said upper surface (12), - an anchoring strip (30), in particular intended to be at least partially enclosed in the envelope, said anchoring strip comprising: * a backing (31) comprising interwoven warp and weft yarns, said backing (31) forming a plurality of interlaces of continuous warp yarns, said plurality of interlaces being continuous in the machine direction (MD) and spaced apart in the cross direction (CD), * a plurality of loops (35) extending from the backing (31), each loop (35) comprising two legs extending from the backing, and a head forming an end of the loop (35) opposite the legs, It is characterized in that The device comprises fixing means (40) for fixing the anchoring strip (30) to the lower surface of the base (10) via at least some of the heads of the rings (35), in particular in order to define a non-zero spacing between the base (10) and the backing (31) of the anchoring strip (30), in particular for receiving an envelope for fixing the device, Furthermore, the fixing device (40) and the base (10) are formed of different materials.

2. The device (1) according to claim 1, wherein The backing (31) of the anchor strip (30) is spaced apart from the base (10) by a distance between 0.2 mm and 10 mm or between 0.5 mm and 7 mm.

3. The device (1) according to any one of claims 1 or 2, wherein The head of the ring (35) is fixed to the lower surface (14) of the base (10) and cannot protrude from the upper surface (12) of the base (10).

4. The device (1) according to any one of claims 1 to 3, wherein At least 50% of the loop (35) of the anchor strip (30) is secured to the lower surface (14) of the base (10), or typically at least 75% of the loop (35) of the anchor strip (30) is secured to the lower surface (14) of the base (10).

5. The device (1) according to any one of claims 1 to 4, wherein The base (10) is formed from monofilament and / or multifilament synthetic yarns interwoven, in particular by weaving and / or knitting.

6. The device (1) according to claim 5, wherein The synthetic yarn is made of thermoplastic material.

7. The device (1) according to any one of claims 5 or 6, wherein The yarn has a diameter between 30 microns and 600 microns, or between 70 microns and 550 microns.

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

9. The device (1) according to any one of claims 1 to 8, comprising a plurality of anchoring strips (30) superimposed so as to define a plurality of layers of the anchoring strips (30) in a direction perpendicular to the lower surface (14) of the base (10).

10. The device according to claim 9, wherein Said anchoring strips (30) of the superposed layers are fixed to each other by means of an adhesive (41).

11. The device (1) according to any one of claims 1 to 10, wherein The upper surface (12) of the base (10) is provided with a retaining element (20).

12. The device (1) according to claim 11, wherein The base (10) is formed of a woven and / or knitted material, each retaining element (20) comprises a stem (22) and a head (26), The stem (22) extends from the upper surface (12) of the base (10), and the head (26) is formed at a free end (24) of the stem (22) opposite to the upper surface (12) of the base (10), The stem (22) of the retaining element (20) extends at least partially into the woven and / or knitted material of the base (10).

13. The device (1) according to any one of claims 1 to 12, wherein The fixing means is an adhesive or glue.

14. An assembly comprising an inclusion compound and a device according to any one of claims 1 to 13, wherein: The envelope at least partially surrounds the anchor strip (30), in particular at least partially surrounds the loop (35) of the anchor strip (30) and / or the backing (31) of the anchor strip (30).

15. The assembly of claim 14, wherein: The envelope is formed from a material made of foam and / or plaster and / or concrete and / or cross-linked plastic and / or thermosetting material.

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