Recyclable surfboard and associated recycling process

Abstract

RECYCLABLE SKATEBOARD AND ASSOCIATED RECYCLING METHOD A recyclable slide board (100) comprising a top layer (10), a core (11), edges (12), a base (13), and at least one fabric (14, 15, 16, 17), said board being assembled by means of a multitude of resin layers (18), the core (11) comprising at least one channel (112a-i, 113a-d, 113g-h, 114d, 114i-k) promoting the diffusion of a solvent (23) depolymerizing the resin (18). Abstract figure: Figure 2

Description

Title of the invention: Recyclable surfboard and associated recycling process technical field

[0001] The present invention belongs to the field of sliding sports equipment such as skis and snowboards.

[0002] The present invention relates more particularly to a method for recycling a board and a particular design of said board and an associated recycling method.

[0003] The present invention finds a direct application in the recovery of ski boards that have reached the end of their use, and thus minimize waste and the environmental footprint of the practice of snow sports. State of the art

[0004] The practice of skiing as a sport dates back to the 19th century in northern Europe. Previously, skiing was primarily used to facilitate the movement of hunters, soldiers, and explorers in snowy areas.

[0005] The late 19th and early 20th centuries saw the development of activities around skiing, particularly in Europe and the United States of America.

[0006] Thus, skis were presented at the Universal Exhibition in Paris in 1878, a true starting point in France for a movement that would grow in scale in the years that followed, thanks to the creation of clubs, as well as resorts dedicated to the practice of this winter sport.

[0007] As an example, so-called "alpine" skiing made its debut in the Olympic program at the 1936 Garmisch-Partenkirchen Olympic Games.

[0008] As the practice of skiing spread, new needs were expressed by skiers, in particular wanting to be able to multiply the number of times they skied down the slopes: in the 1930s, the first ski lifts appeared, both on the American continent and in Europe.

[0009] Skiing is gradually becoming more widespread, and ski resorts are increasingly frequented by skiers enjoying the slopes. A leisure activity that was still relatively unknown at the beginning of the 20th century, in 2021, more than fifty million people skied in Europe.

[0010] In parallel with the development of the activity and the infrastructure enabling the practice of skiing, and more generally snow sports, skis initially made of wood have evolved thanks to technological advances.

[0011] Thus, the first skis were generally designed in laminated wood with different wood species, and could be very fragile, especially with the glues used which were then soluble in water.

[0012] In the 1960s, the first skis containing fiberglass fabric and composite materials were manufactured, improving their glide, control, and reliability.

[0013] Subsequently, the ski industry will continue to develop composite materials and manufacturing methods for increasingly high-performance skis.

[0014] Since skis have a limited lifespan, this leisure activity inevitably generates a significant amount of waste. For example, in France, it has been estimated that end-of-life skis represent more than 1,500 tonnes of waste annually.

[0015] The composition of the skis and the manufacturing methods used do not allow for the efficient separation of the different elements constituting them in order to then recycle them.

[0016] These wastes will then essentially be collected to be sent to technical landfill centers where they will be stored, or to incineration centers.

[0017] Disposal in engineered landfills or redirection to incineration plants are not solutions for reducing the environmental footprint of the ski industry. A solution for reducing this environmental footprint is therefore to recover the material present in skis.

[0018] When this material is properly identified, it can be sorted and directed to one or more specific processing channels. Furthermore, if the recovered material is in good condition, it can also be reused in a ski production line.

[0019] Document EP2762208A1 describes a method for manufacturing a ski board that improves the recycling of said board. This method aims, in particular, to facilitate the manufacturing operations of a ski board, especially with regard to the production of composite reinforcements. The ski board manufacturing method described in document EP2762208A1 also aims to improve its energy efficiency and the recycling of said boards.

[0020] Suggestions for recycling surfboards produced using the disclosed manufacturing process are provided. However, the recycling process itself is not described in detail. Furthermore, the suggested methods appear to be energy-intensive, requiring temperatures close to 150°C to separate the materials from the constituent elements of the surfboards. Also, the acrylic resin used in the manufacturing process described in this document depolymerizes at a temperature of approximately 400°C.

[0021] Document EP2574447A1 describes a method for manufacturing a board with high recyclability characteristics, using of easily recyclable materials.

[0022] On the other hand, document EP2574447A1 does not describe a method for recycling the surfboards, nor does it provide solutions to the technical problem of separating the materials from the constituent elements of said boards.

[0023] Although technological advances have been made in the ski industry in recent years, these have mainly focused on the development of new composite materials to offer higher-performance skis, but which are not necessarily more recyclable.

[0024] In view of the environmental challenges facing the ski industry, it is therefore necessary to continue the development of innovative solutions that reduce its environmental footprint, by greatly improving the re-cyclability of manufactured products (eco-design and development of recycling processes and sectors). Presentation of the invention

[0025] The present invention proposes an innovative solution for a recycling process for sliding boards (skis, snowboards, etc.) designed to facilitate their recycling. This recycling process and these eco-designed sliding boards address the problem of managing waste generated by certain winter sports. Currently, this waste is not recovered. The potential for recovering this waste is largely untapped, as most of it is either incinerated or landfilled due to its complexity.

[0026] Thus, this invention makes it possible to reduce the amount of waste currently buried or incinerated.

[0027] The sliding board described here, and its associated recycling process, is therefore an effective means of material recovery (reuse, repurposing or recycling).

[0028] To this end, the present invention relates to a recyclable board comprising a top layer, a core, edges, a base, and at least one fabric, said board being assembled using multiple layers of resin. This board is notable in that the core includes at least one channel promoting the diffusion of a solvent that depolymerizes the resin. This feature has the particular advantage of separating the constituent elements of the board at the end of its use cycle, in order to regroup the materials and facilitate their recycling.

[0029] According to a particular feature, the upper layer of the slide board is made of a material that can dissolve in the solvent. Thus, the slide board is no longer hydrophobic and the solvent can diffuse into the tissues and the core, facilitating the dismantling of the constituent elements of said board.

[0030] According to another particular feature, the resin used can be depolymerized using acetic acid, which is a substance with low toxicity to humans and the environment, and which can also be found in nature. Furthermore, it is a colorless, biodegradable, and anti-limescale solvent.

[0031] According to a particular embodiment, the core of the sliding board comprises secondary channels which are regularly spaced.

[0032] According to another particular embodiment, the core of the sliding board has secondary channels which are irregularly spaced along said core.

[0033] The present invention also relates to a method for recycling a skateboard, remarkable in that it comprises the following steps: - immersion of the board in a solvent that depolymerizes the resin layers contained in said board; - recovery of the components of the sliding board; - sorting of the elements separated during the immersion stage to regroup similar materials; and - analysis to verify the condition of the materials and determine their appropriate use.

[0034] This process has the advantage of separating the main components of the board that have been previously bonded together by means of resin layers. Furthermore, this separation is achieved without damaging these elements.

[0035] Advantageously, the recycling process further includes a step of dismantling elements attached to the board, such as mounting rails and screws. This step allows only the elements of the board that are bonded with resin to be immersed. Furthermore, removing these previously attached elements from the screw holes facilitates the diffusion of the solvent into the core of the board.

[0036] Advantageously, the recycling process further includes a step of cleaning the elements separated during the immersion step. Indeed, these elements may contain resin and solvent residues which must then be cleaned to facilitate the recovery of the materials.

[0037] Furthermore, and advantageously, the recycling process also includes a drying step for the elements separated during the immersion step. This additional step facilitates the analysis of the quality of the materials that have been previously separated. Moreover, since the materials are dry, they are easier to handle, particularly due to their reduced weight, as they no longer contain liquid.

[0038] Finally, and according to a particular embodiment, the recycling process further comprises a step of reusing materials in the production chain and / or a step of transferring materials to a suitable recycling channel, in order to recover value from the materials recovered.

[0039] The fundamental concepts of the invention having been set forth above in their most elementary form, other details and features will become clearer upon reading the following description and with reference to the accompanying drawings. Presentation of the drawings

[0040] The figures are given for illustrative purposes only to facilitate a better understanding of the invention without limiting its scope. The various elements may be represented schematically and are not necessarily to the same scale. Throughout the figures, identical or equivalent elements are identified by the same numerical reference.

[0041] It is thus illustrated in:

[0042] [Fig-1]: A partial perspective view of a board arrangement according to one embodiment of the invention;

[0043] [Fig.2]: an exploded perspective view of the sliding board according to one embodiment of the invention;

[0044] [Fig.3]: the main steps of a manufacturing process for a sliding board according to an embodiment of the invention;

[0045] [Fig.4A]: a perspective view of a core of a sliding board comprising channels according to an embodiment of the invention;

[0046] [Fig.4B]: a perspective view of a core of a sliding board comprising channels according to another embodiment of the invention;

[0047] [Fig.4C]: a perspective view of a core of a sliding board comprising channels according to another embodiment of the invention;

[0048] [Fig.4D]: a perspective view of a core of a sliding board comprising channels according to another embodiment of the invention;

[0049] [Fig.4E]: a perspective view of a core of a sliding board comprising channels according to another embodiment of the invention;

[0050] [Fig.4F]: a perspective view of a core of a sliding board comprising channels according to another embodiment of the invention;

[0051] [Fig.4G]: a perspective view of a core of a sliding board comprising channels according to another embodiment of the invention;

[0052] [Fig.4H]: a perspective view of a core of a sliding board comprising channels according to another embodiment of the invention;

[0053] [Fig.41]: a perspective view of a core of a sliding board comprising channels according to another embodiment of the invention;

[0054] [Fig.4J]: a perspective view of a core of a board comprising channels according to another embodiment of the invention;

[0055] [Fig.4K]: a perspective view of a core of a sliding board comprising channels according to another embodiment of the invention;

[0056] [Fig. 5]: The main steps in a process for recycling a surfboard according to one embodiment of the invention;

[0057] [Fig.6A]: a side and perspective view of a basin implementing the process of recycling a slide board according to an embodiment of the invention;

[0058] [Fig.6B]: a view from below and in perspective of the basin implementing the process of recycling a slide board according to an embodiment of the invention. Detailed description of implementation methods

[0059] It should be noted that certain technical elements well known to those skilled in the art are described here to avoid any insufficiency or ambiguity in the understanding of the present invention.

[0060] In the embodiment described below, reference is made to a board and an associated recycling process, said board being eco-designed to facilitate its recycling. Furthermore, a system implementing the recycling process is described.

[0061] The invention relates to an eco-designed sliding board and an associated recycling process allowing the different constituent elements of said board (ski, snowboard, etc.) to be separated in order to sort the different materials so that they can be recovered (reuse, transfer to an appropriate recycling channel, etc.).

[0062] Fig. 1 represents a perspective view of an arrangement of the different elements with which a 100 board is manufactured.

[0063] The gliding board 100 essentially comprises a top layer 10, a core 11, an edge 12 located along said board, a base 13, and fabrics 14, 15, and 16 made of fiberglass or linen, for example. The fabrics 14, 15, and 16 may contain fibers arranged along one axis (unidirectional fibers) or several axes (directional fibers, etc.).

[0064] The top layer 10 (topsheef) completely covers the board 100 up to the edges 12 and is preferably made of plastic. Furthermore, in some embodiments, the top layer 10 has the property of dissolving in solvent-type liquids while retaining its water resistance properties, in order to facilitate the recycling of the board 100. In this example, the board 100 is assembled using a CAP-type construction, i.e., with the top layer 10 covering the entire construction to protect it from moisture, although this type of construction is not limiting. Indeed, the construction of the board 100 can be of the Semi- CAP, in which the top layer 10 then covers half of the construction, or of the "with edges" type for example.

[0065] The core 11 is preferably made of laminated wood, in one piece, or by gluing together a multitude of layers.

[0066] The edges 12 are preferably made of metal and are located on either side of the base 13 of the sliding board 100.

[0067] Finally, the sole 13 is preferably made of plastic material, and is the part of the sliding board 100 which is in contact with the snow, allowing said board to slide.

[0068] The elements of the board described above are held together by means of fabrics 14, 15 and 16, previously coated with a polyepoxide resin, commonly called epoxy, which has the property of being thermosetting, but which is also recyclable after a depolymerizing process. This layered assembly is called a sandwich assembly.

[0069] Fig. 2 represents an exploded perspective view of the main elements used to manufacture the 100 slide board according to one embodiment.

[0070] The gliding board 100 in this example includes an additional glass or linen fiber fabric 17, interleaved between the fabric 14 and the core 11. Indeed, the quantity of fabric 14, 15, 16 and 17 is not a limiting aspect of the invention.

[0071] The main components of the board 100 are bonded together by means of layers of a thermosetting resin 18, represented by hatched areas in [Fig. 2]. As mentioned previously, epoxy can be used, but this is not a limitation to the present invention; those skilled in the art can use other types of thermosetting resin, or resins that harden by other techniques (ultraviolet radiation, etc.).

[0072] Eco-design work is carried out upstream of assembly in order to facilitate the recycling of the sliding board 100. This work consists of selecting materials that can be recovered after the sliding board 100 has reached the end of its use, but also of designing in particular the core 11 of said board, as shown in [Fig.4A]-K.

[0073] To summarize, and for a particular embodiment, the 100 slide board mainly comprises the following materials: - laminated wood (core 11), - metal (12 squares), - plastic (top layer 10, sole 13), - filaments (fabrics 14, 15 and 16 made of fiberglass, linen or other materials), and - epoxy in solid form once polymerized.

[0074] Figure 3 represents the main steps of a manufacturing process 400 100mm sliding board, for a particular method of implementation.

[0075] Process 400 mainly comprises: - a preparation step 410 of the different elements which allow the manufacture of the sliding board 100; - an assembly step 420 of the slide board; - a molding step 430 of the elements used to manufacture the board glide 100, by compressing them under pressure and heating them for a certain period of time; - a machining step 440 of the 100 slide board.

[0076] The preparation step 410 prepares the top layer 10, the core 11, the edges 12, the base 13, and the fabrics 14, 15, and 16, so that they can be cut to the desired dimensions. These elements are supplied in their raw form and require cutting before they can be used in the manufacture of the board 100.

[0077] Assembly step 420 consists of arranging all the elements shown in [Fig.1] and [Fig.2] in a mold, while applying layers of epoxy resin 18 between each element in order to glue them together in the next step.

[0078] The molding step 430 consists of placing under a heated press for a period of approximately 8 minutes, at a temperature close to 80°C. During this step, the resin 18 hardens, holding the top layer 10, the core 11, the edges 12, the sole 13 as well as the fabrics 14, 15 and 16 together, at the end of this step.

[0079] Machining step 440 aims to perform finishing work to remove fabric and resin residues protruding from the edges of the slide board 100 in order to make said board usable. During this step, the other components of the slide board 100 are attached (rails, etc.).

[0080] In order to facilitate the recycling of the sliding board 100 as represented in [Fig.5], and as mentioned previously, the core 11 used for the manufacture of said board may have specific features, described below.

[0081] Figures 4A-K represent cores 1la-k having structural modifications that improve the diffusion, within the glide board 100, of the solvent depolymerizing the resin layers 18 that had hardened during the manufacture of said board. For clarity, the ends of the glide board 100, commonly called the tip and the tail, are not shown in Figures 4A-K.

[0082] Fig. 4A represents a wooden core 1 comprising a central longitudinal main channel 112a cut out on a surface 111a of said core which is opposite the sole 13. The surface 111a further comprises a multitude of lateral secondary channels 113a which are perpendicular to the main channel 112a.

[0083] The core 1 has a thickness el 1 which is on the order of 10 mm. The thickness el 1 can vary or be constant depending on the length of the 100 slide board, without this being a limiting aspect of the invention.

[0084] The main channel 112a is characterized by a width 1112, a depth pl 12 and a cross-section profile Pl 12. In [Fig.4A], the cross-section profile Pl 12 has a semi-circular shape, with a radius equal to the depth pl 12. The shape of the cross-section profile Pl 12 can vary along the main channel 112, and can be of a shape other than a semi-circle, such as rectangular, semi-ellipsoidal, included in a surface defined by the width 1112 and the depth pl 12.

[0085] Each secondary channel 113a is defined by a width 1113, a depth p 113 and a cross-section profile Pl 13. As with the main channel, and in this example, the cross-section profile Pl 13 of the secondary channel 113a is in the shape of a semicircle, without this being a design limitation, as those skilled in the art can make secondary channels 113a with different shapes.

[0086] In a particular embodiment, where the core lia comprises a multitude of secondary channels 113a, each of said channels comprising a central axis 115 in the direction of the width of said core, the distribution of said channels is defined according to an interval I separating two consecutive central axes 115, a length of the interval I being otherwise constant.

[0087] In another particular embodiment, the interval I varies. Thus, the mechanical properties of the core lia are modified locally in order to improve the dynamic behavior of the gliding board 100, and this dynamic behavior is adapted zone by zone according to the mechanical stresses that said board undergoes.

[0088] Figure 4B represents a wooden core 11b comprising a central longitudinal main channel 112b cut into a surface 111b of said core. The core 11b also comprises a multitude of lateral secondary channels 113b exhibiting an obliquity with the central longitudinal main channel 112b.

[0089] Figure 4C represents a wooden core 1 comprising a straight main channel 112c, hollowed out in the center and along the length of the core 1, on a surface 111c of said core. The core 11c comprises a secondary channel 113c, this time sinusoidal in shape.

[0090] Figure 4D represents a wooden core 1Id comprising a central straight longitudinal main channel 112d, cut out on a surface 11Id of said core. The core 1I comprises a multitude of first secondary channels 113d perpendicular to the main channel 112d, as well as a multitude of second secondary channels 114d connecting, at the edges of the surface 11Id of said core, the first secondary channels 113d.

[0091] Figure 4E represents a wooden core 1 comprising a central straight longitudinal main channel 112e, hollowed out on a surface 111e of said core. The core 1 includes a multitude of secondary 113e channels in the shape of an "X" which are distributed along the length of said nucleus.

[0092] Fig. 4F represents a core 1 If of wood comprising only a central straight longitudinal main channel 112f, hollowed out on a surface 11 If of said core.

[0093] Figure 4G represents a wood core 11g comprising a central straight longitudinal main channel 112g, hollowed out on a surface 111g of said core. The core 11g comprises a multitude of secondary channels 113g in the shape of "V" and distributed along the length of said core.

[0094] Beyond the advantage conferred by the structural modifications of the nuclei 1 la-g in the diffusion of the solvent within the sliding board 100, these modifications can also improve the mechanical properties of said nuclei.

[0095] As further examples, Figures 4H-4K represent Ig-k nuclei whose structure has been optimized to obtain this technical effect.

[0096] Figure 4H represents a core 1Ih whose surface 11Ih has a multitude of semicircular bumps 113h, thus forming a wavy surface 11Ih. The bumps 113h are distributed on either side of a central straight longitudinal main channel 112h. Between each bump 113h, a secondary channel 114h is formed. This design of the core 1Ih increases the resisting moment of said core.

[0097] Figure 41 represents a core 1l1 based on the same design as shown in Figure 4H, but differing in the shape of the secondary channels 114i and the bumps 113i, which are closer to a parallelepiped shape with a trapezoidal cross-section. As before, the secondary channels 114i and the bumps 113i are distributed on either side of a central, straight, longitudinal main channel 112i, hollowed out in a surface 11l1 of the core 1l1. The parallelepiped shape with a trapezoidal cross-section of the secondary channels 114i and the bumps 113i has the advantage of being more easily manufactured than that of the secondary channels 114h and the bumps 113h of the core 1l1 shown in Figure 4I.

[0098] Finally, [Fig.4J] and [Fig.4K] represent respectively a core 1 Ij and a core 11k, having a wavy shape over their entire thickness and along their length, except at the level of the area (not shown here) where fixing rails are positioned during the machining step 440.

[0099] The nuclei 1 Ij and 11k comprise a multitude of bumps 113j and 113k distributed along the length of said nuclei, separated respectively by a trough 114j and a trough 114k. The bumps 113j and 113k are distributed at an interval Ij separating two consecutive crests 115j, in the case of the nucleus 1 Ij, and at an interval Ik separating two consecutive crests 115k, in the case of the nucleus 11k.

[0100] The intervals Ij and Ik can be constant depending on the length of the kernels 1 Ij and 11k, but can also vary in order to locally modify the me- properties canics of said kernels.

[0101] In addition, the 114j and 114k troughs can be likened to the secondary channels described in Figures 4A to 41.

[0102] The sliding board 100 comprising a core 1 la-k as shown in figures 4A to 4K makes it possible to improve the dynamic behavior of said board, while promoting the recyclability of the whole, compared to the use of a core 11 of substantially uniform thickness, as shown in [Fig.1] and [Fig.2].

[0103] The main channels 112a-i and 114d as well as the secondary channels 113a-d and 113g-h and 114i-k can be cut either on the surface of the core 1 la-k which is opposite the base 13, or on the surface of said core which is on the same side as said base, or on these two surfaces.

[0104] Also, the number of channels is not a limiting aspect of the invention: the core 11 may include at least one, whether it is a main channel 112a-i and 114d, a secondary channel 113a-d and 113g-h and 114i-k. In a particular embodiment, the core 11 includes at least two main channels 112a-i and 114d.

[0105] Fig. 5 represents the main steps of a recycling process for a 500 board for a 100 board, for a particular embodiment.

[0106] Process 500 mainly comprises: - a dismantling step 510 - an immersion stage 520 - a recovery step 530 - a drying stage 540 - an analysis step 550 - a step of reuse 551 of materials in the production chain or transfer 552 of materials to a suitable recycling channel.

[0107] The dismantling step 510 consists, when the slide board 100 reaches the end of its cycle of use (normal wear, breakage, etc.), of dismantling the various elements that were added to the slide board 100 during the machining step 440 (rails, etc.).

[0108] In a particular embodiment, the upper layer 10 is partially removed, for example by sanding, thus promoting the diffusion of the solvent within the sliding board 100 during the immersion step 520.

[0109] In another particular embodiment, the sliding board 100 is cut, according to its width, into a plurality of parts.

[0110] Another particular embodiment of step 510 consists of creating an opening between the edges 12 and the base 13 of the sliding board 100.

[0111] These three particular embodiments thus facilitate the recycling of a board 100 whose core 11 does not have structural modifications such as those shown in Figures 4A to 4K. Thus, the recycling process 500 is suitable for handling 100 different design boards.

[0112] The immersion step 520 consists of immersing the sliding board 100 in a dissolution basin comprising an acetic acid type solvent, as shown in [Fig.6A] and [Fig.6B], and enabling the depolymerization of the resin 18.

[0113] Once the resin 18 has been depolymerized, the top layer 10, the core 11, the edges 12, the sole 13 and the glass or linen fiber fabrics 14, 15 and 16 are separated again.

[0114] In one embodiment, the immersion step 520 comprises a treatment cycle lasting approximately 25 hours, during which several heating phases are carried out: - a first heating phase 521 where the temperature of the acetic acid is maintained at 60 °C for 2h45; - a first phase without heating 522 where the temperature of the acetic acid is maintained at 30°C for 14h20; - a second heating phase 523 where the temperature of the acetic acid is maintained at 60 °C for 7h30.

[0115] The duration of the immersion step 520 can be reduced, for example, by increasing the temperature of the acetic acid or by not interrupting the heating cycle. Indeed, acetic acid depolymerizes the resin 18 more rapidly when its temperature is high. Thus, in one embodiment, the immersion step 520 does not include any cycles without heating the acetic acid, but a single heating cycle at a set temperature.

[0116] The recovery step 530 consists of reassembling the top layer 10, the core 11, the edges 12, the sole 13, and the fabrics 14, 15, and 16 that were separated when the resin 18 was depolymerized. The liquid in the dissolution basin is filtered to recover any solid particles that may be present in the basin. Furthermore, the liquid is then neutralized, and the depolymerized resin 18 is recovered in thermoplastic form.

[0117] Cleaning step 540 consists of rinsing the top layer 10, the core 11, the edges 12, the sole 13 and the fabrics 14, 15 and 16 in order to remove acetic acid and resin residues.

[0118] The drying step 550 prepares the elements mentioned above for the next step. The drying time of the elements depends on their composition and volume.

[0119] The sorting step 560 consists of grouping the constituent elements of the sliding board 100, by family of materials.

[0120] The cleaning 540, drying 550 and sorting 560 steps can be reversed according to the production line implementing the recycling process 500.

[0121] The analysis step 570 consists of checking the condition of each of the recovered elements in order to select those that can be reused in a production chain, via a step 571, or transferred to a recycling channel, via a step 572, if they are too damaged.

[0122] Fig. A and Fig. B represent in perspective an immersion system 200 comprising a dissolution basin 20 having a lid 21, a tank 22 containing a solvent 23, supported by feet 222, and having on one of its sides a drain valve 221, and on its bottom a heating system 24 consisting of a plurality of heating resistances 241 and a power cable 242.

[0123] A thermostat (not shown here) controls the temperature of the solvent 23 and orders the heating of the solvent 23 by means of the heating elements 241 if the temperature setpoint during the treatment cycle is not reached.

Claims

Demands

1. A board (100) comprising a top layer (10), a core (11), edges (12), a base (13), and at least one fabric (14, 15, 16, 17), said board being assembled by means of a multitude of resin layers (18), characterized in that the core (11) comprises at least one channel (112a-i, 113a-d, 113g-h, 114d, 114i-k) cut out on an external surface (11la-k) of said core, to promote the diffusion of a solvent (23) to depolymerize the resin (18), said solvent being of the acetic acid type, said solvent being adapted to decouple the core (11) from the edges (12), the base (13) and the fabric (14, 15, 16, 17).

2. Slide board (100) according to claim 1, wherein the upper layer (10) is made of a material that can dissolve in the solvent (23) of the acetic acid type.

3. Slide board (100) according to claim 1 or 2, wherein the core (11) has regularly spaced secondary channels (113a-d, 113g-h, 114d, 114i-k).

4. Slide board (100) according to any one of the preceding claims, wherein the core (11) has secondary channels (113a-d, 113g-h, 114d, 114i-k) irregularly spaced along said core.

5. A method (500) for recycling a board (100) according to any one of the preceding claims, characterized in that it comprises the following steps: - (520) immersion of the board (100) in a solvent (23) depolymerizing layers of resin (18) contained in said board; - (530) recovery of the constituent elements of the board (100); - (560) sorting of the elements separated during the immersion step (520) to group similar materials; and - (570) analysis to verify the state of the materials and determine their appropriate recovery.

6. Method (500) according to claim 5, further comprising a step (510) of dismantling elements fixed on the slide board (100), such as fixing rails and serial screw.

7. Method (500) according to claim 5 or 6, further comprising a step (540) of cleaning the dissociated elements during the immersion step (520).

8. A method (500) according to any one of claims 5 to 7, further comprising a step (550) of drying the dissociated elements during the immersion step (520).

9. A method (500) according to any one of claims 5 to 8, further comprising a step (571) of reusing materials in the production chain and / or a step of transferring materials to a suitable recycling channel (572).

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