Winding roll for LED flexible tapes

Abstract

The invention relates to a winding roll (1), in particular a disk reel, for winding an LED flexible tape (M) by rotation about an axis of rotation (X), produced from a cellulose-fibre-based material, consisting of two disk elements (2) made of the cellulose-fibre-based material, which are axially spaced apart from one another with respect to the axis of rotation (X) in order to define a winding space (3) therebetween for winding the LED flexible tape (M), and a distance element (4) which is made of the cellulose-fibre-based material and is at least partially arranged between the two disk elements (2) so as to connect the disk elements (2) in a supporting manner, wherein the distance element (4) is arranged, with respect to the axis of rotation (X), radially between the axis of rotation (X) and the winding space (3) such that a placement surface (6) of the distance element (4) directed radially away from the axis of rotation (X) for placing the LED flexible tape (M) delimits the winding space (3) at least in some sections about the axis of rotation (X).

Description

[0001] Rolling roller for LED flex tapes

[0002] Description:

[0003] The present invention relates generally to the field of winding rolls and in particular to winding rolls for winding an LED flex tape, as well as a winding system consisting of the winding roll together with the wound LED flex tape.

[0004] Current technology includes winding reels for LED flex tapes. LED flex tapes are LED light strips that feature a flexible, ribbon-like circuit board on which conductive traces and electrical / electronic components (including LEDs) are arranged along their length. LED flex tapes are typically sold in lengths of several meters (e.g., 5m, 10m, 15m, etc.). To make the LED flex tapes easy, safe, and compact to handle—for example, for transport—they are usually wound onto reels. This makes the wound LED flex tapes easy to package and transport. A winding reel also allows the LED flex tapes to be easily unwound to the desired length for use. This makes winding and handling the LED flex tapes simple. These conventional winding reels are typically made of plastic, such as polystyrene.Winding reels manufactured in this way are often multi-part, consisting of individually complex components. This is achieved, for example, through injection molding. This requires molds, which are often only economical for large production runs. Furthermore, winding reels made of plastic are often not sustainable.

[0005] It is therefore an object of the present invention to provide a winding method for LED flex tapes which is easy and inexpensive to manufacture and sustainable.

[0006] This problem is solved by the subject matter of the independent claim. The dependent claims further develop the central idea of ​​the present invention in a particularly advantageous manner.

[0007] According to a first aspect, the present invention relates to a winding reel, also referred to as a winding spool. In a preferred embodiment, the winding reel is a disc spool. The winding reel serves to wind an LED flex tape by rotating it around an axis of rotation. The winding reel is made of a cellulose fiber-based material. The winding reel has two disc elements made of the cellulose fiber-based material. The disc elements are arranged axially spaced apart from each other with respect to the axis of rotation in order to form or define a winding space between them for winding the LED flex tape. The winding reel further has a spacer element, also made of the cellulose fiber-based material. The spacer element is arranged at least partially between the two disc elements in such a way as to connect the disc elements in a load-bearing manner. The spacer element is arranged with respect tothe axis of rotation is arranged radially between the axis of rotation and the winding space in such a way that a bearing surface of the spacer element directed radially away from the axis of rotation for the support of the LED flex tape limits the winding space at least sectionally around the axis of rotation.

[0008] The winding reel according to the invention makes it possible to provide it from a sustainable material. The design of the winding reel also defines a winding space that securely accommodates an LED flex tape. Furthermore, the spacer element, by connecting the disc elements in a load-bearing manner, provides (dimensional) stability for providing and precisely positioning the disc elements (thus defining the winding space) and, at the same time, offers a secure support for winding the LED flex tape. The winding reel can therefore be easily disposed of in a single recycling stream and thus sustainably recycled. In addition, the winding reel can preferably be manufactured from a renewable raw material.

[0009] The winding roll can preferably have a multi-layer structure consisting of several layers of the cellulose fiber-based material, or be made entirely of it. This multi-layer structure allows the winding roll to achieve a defined (dimensional) stability and size (e.g., width of the winding space in the axial direction; thickness of the disc elements) by using the appropriate number or thickness of layers, depending on the requirements. This makes it easy to address different requirements and to provide different types of winding rolls cost-effectively.

[0010] The spacer element and / or the disc elements can each have at least one layer of the cellulose fiber-based material or consist of it. Thus, the individual elements of the winding roll can be directly defined by the layered structure of the cellulose fiber-based material, which further simplifies the manufacturing of the winding roll.

[0011] The spacer element can preferably be formed from or consist of several layers of the cellulose fiber-based material. This allows, for example, the width of the winding space to be varied as needed by using different numbers of layers of the cellulose fiber-based material. The multiple layers are preferably firmly bonded together, ideally by means of a material-bonded connection such as adhesive bonding. This allows the winding roll to be securely held together and easily manufactured using simple and cost-effective fasteners. Furthermore, the bonded layers provide the winding roll with high overall dimensional stability due to their strong connection.

[0012] At least one or both of the disc elements can preferably be connected to the spacer element by means of a material-bonded connection, such as gluing, a force-fit connection, such as inserting, and / or a form-fit connection, such as folding. The winding roll can thus be manufactured in any way, depending on the requirements, in order to meet different demands regarding (dimensional) stability, cost, sustainability, and the like.

[0013] The disc elements or their layer(s) can preferably each be made of or consist of corrugated cardboard. This allows the disc elements or their layer(s) to be manufactured cost-effectively from a known and readily available material. Furthermore, corrugated cardboard offers the advantage of low weight combined with high dimensional stability.

[0014] The disc elements or their layer(s) can preferably be made of single-wall corrugated board, such as E-flute and / or B-flute, and / or preferably of multi-wall corrugated board, such as double-wall corrugated board, such as EE-flute and / or EB-flute, and / or triple-wall corrugated board, such as EEB-flute and / or EBE-flute. Thus, depending on preference and requirements, e.g., regarding (dimensional) stability and cost, known corrugated board constructions can be used. These can also be combined with each other in any way. This allows for a particularly simple and flexible way to meet different requirements for the winding roll.

[0015] Similarly, the spacer element or its layer(s) can also be made of or consist of corrugated cardboard. Preferably, the spacer element or its layer(s) can be made of single-wall corrugated cardboard, such as B-flute and / or C-flute, and / or preferably of multi-wall corrugated cardboard, such as double-wall corrugated cardboard, such as EB-flute and / or BC-flute, and / or triple-wall corrugated cardboard, such as EEB-flute and / or EBE-flute. This offers the same advantages as the disc elements or their layer(s) made of or consisting of corrugated cardboard, as described above.The spacer element is preferably formed by tabs cut, preferably die-cut, from at least one of the disc elements. These tabs are bent towards the other disc element and attached to it at their distal end. The attachment can be achieved, for example, by a material-bonded connection such as gluing, a force-fit connection such as inserting, and / or a form-fit connection such as folding. Such a construction of a winding roll is particularly lightweight and simple. Only the disc elements need to be provided, from which the spacer element can then be easily formed. The winding roll can thus be manufactured simply and cost-effectively. The stability of the winding roll can be influenced by the thickness of the cellulose fiber-based material, the size and shape of the tabs, and, if applicable, the type of forming or...The folding can be varied as desired.

[0016] The winding roll preferably has at least two or at least three tabs. This allows the position and number of tabs, and preferably also the winding characteristics of the winding roll, to be varied as desired.

[0017] At least two or at least three of the tabs can preferably form the contact surface together. Thus, preferably some or all of the tabs each have a portion of the contact surface – for example, in the form of support sections as described below. This provides a stable contact surface while ensuring the winding roll is easy to handle and protects the material.

[0018] The support surface can preferably form a continuous, closed boundary around the circumference of the winding area with respect to the axis of rotation. This allows for a particularly stable winding roll, providing a defined and preferably full-surface support for an LED flex tape. Alternatively, the support surface can consist of several support sections, as previously described. These support sections are preferably distributed around the circumference with respect to the axis of rotation and, more preferably, evenly distributed. This enables the cost-effective provision of the corresponding support surface while maintaining high dimensional stability and a lightweight overall construction for the winding roll.

[0019] The winding roller and preferably the spacer element can preferably have a holding structure for securely receiving an end section of the LED flex tape to be wound up. In this way, winding an LED flex tape can be significantly simplified for a user, and winding can also be easily automated or at least semi-automated.

[0020] The retaining structure can preferably be formed by a slot in the cellulose fiber-based material. This allows the retaining structure to be provided in a particularly simple manner without additional elements or material. If the spacer element is formed, for example, by the tabs described above, the retaining structure in the form of the slot can be provided in one or more of the tabs. The step of cutting out the tabs can, for example, be combined with the step of providing the slot as the retaining structure, making the entire process particularly easy to implement.

[0021] The winding roll can preferably also have a rotary shaft mount for receiving a rotary shaft of a drive unit, in order to rotate the winding roll by rotating the rotary shaft about the axis of rotation. Thus, the winding roll can be moved in a particularly simple manner by means of a drive unit, which facilitates the winding and unwinding process.

[0022] The rotary shaft receptacle can preferably be designed as a recess or through-hole in the cellulose fiber-based material. This allows the rotary shaft receptacle to be incorporated directly in a particularly simple manner – for example, when providing the respective elements of the winding roll.

[0023] The rotary shaft receptacle can preferably be designed as a through-hole in at least one of the disk elements or extending axially through both disk elements. If the rotary shaft receptacle is provided in at least one of the disk elements, it can be designed in a particularly simple manner. If the through-hole extends through both disk elements, a particularly secure and stable receptacle for the rotary shaft can be provided, thus enabling a particularly defined and stable winding process through defined rotation about the axis of rotation.

[0024] The rotating shaft receptacle can preferably be designed as a through-hole in the spacer element. This allows for a particularly stable and defined receptacle for the rotating shaft.

[0025] The rotating shaft mount preferably has a diameter D. This allows for a simple structure for accommodating a rotating shaft. The diameter D can preferably be in the range of 5 mm to 50 mm, or from 10 mm to 20 mm, or preferably 14 mm. Thus, any diameter of rotating shaft can be accommodated.

[0026] The rotary shaft receptacle can have a circular, oval, polygonal (e.g., triangular, square, or rectangular) or other shaped contour when viewed along the axis of rotation. A circular contour is particularly easy to manufacture. A non-rotationally symmetrical contour—but preferably a cyclically symmetrical one—allows a rotary shaft shaped according to this contour to be positively engaged in the rotary shaft receptacle with respect to the direction of rotation, so that the rotary shaft receptacle can simultaneously serve as a drive structure.

[0027] The winding roll can further feature an (additional) drive structure designed to positively engage a drive element of one or more of the drive units in one direction of rotation around the axis of rotation. This allows for the simple provision of a suitable structure, enabling easy and reliable movement of the winding roll, particularly by means of a corresponding drive unit.

[0028] The drive structure can preferably be arranged offset from the axis of rotation. This facilitates the driving of the winding roll during a rotary movement of a drive unit and preferably also reduces the load on the drive structure with increasing distance from the axis of rotation.

[0029] The rotating shaft mount can preferably incorporate the drive structure, as previously described in the example. This simplifies the manufacturing of the winding roll. It also allows for a more compact design of both structures, resulting in a more compact and flexible winding roll overall.

[0030] The drive structure can preferably be designed as a recess or through-opening; preferably in at least one of the disc elements and / or in the spacer element. The drive structure can thus be provided directly with the corresponding element of the winding roll in a simple and cost-effective manner.

[0031] The drive structure preferably has a diameter d. This allows for a simple structure to accommodate a drive element. The diameter d can preferably be in the range of 5 mm to 15 mm, more preferably 8 mm to 12 mm, or more preferably 10 mm. Thus, the drive structure can be designed, for example, to accommodate known drive elements. The drive structure preferably has a circular, oval, polygonal (e.g., triangular, rectangular, or square), or otherwise shaped contour when viewed along the axis of rotation. The drive structure can therefore be provided in a simple and effective manner, according to the desired function and the contour of the drive element to be accommodated.

[0032] The diameter D of the rotary shaft receptacle is preferably larger than the diameter d of the drive structure. This ensures correct connection of a rotary shaft to the rotary shaft receptacle and of a drive wheel to the drive structure, and reliably prevents confusion regarding the respective components of a drive unit.

[0033] The winding chamber preferably has a radial inner diameter I with respect to the axis of rotation, which is preferably defined at least by the contact surface. This ensures secure mounting and winding of an LED flex tape.

[0034] The inner diameter I can preferably be I > 30 mm, I > 40 mm, I > 50 mm, or I > 60 mm. Depending on the size of the inner diameter I, a different winding radius results, which can be provided accordingly, depending on the LED flex tape being wound. A smaller inner diameter I allows for more compact winding with a smaller winding radius, while a larger inner diameter I allows for a larger overall winding roll but also a larger winding radius.

[0035] The diameter D of the rotary shaft receptacle is preferably less than or equal to the inner diameter I; thus, D < I. This allows the rotary shaft receptacle to be securely positioned within or along the support surface, enabling simple and stable mounting of a rotary shaft.

[0036] The winding chamber preferably has a radial outer diameter A with respect to the axis of rotation, which is preferably defined by an outer contour of the disc elements, viewed in the direction of the axis of rotation. Thus, the winding chamber can preferably be spatially defined and limited, ensuring that a wound LED flex tape is securely held within the winding chamber. Furthermore, depending on requirements, an LED flex tape wound onto the winding reel can be protected within the winding chamber.

[0037] The outer diameter A can preferably be A > 80 mm, A > 100 mm, A > 120 mm, or A > 140 mm. Depending on the length of the LED flex tape to be wound, the winding space can thus be provided accordingly; this is generally in conjunction with a correspondingly selected inner diameter I.

[0038] At least a portion of the winding reel can preferably have a coating of an electrically conductive material (so-called ESD material; ESD = "Electrostatic Discharge"). This effectively counteracts potential electrostatic charge and, consequently, preferably also potential discharge via the wound product (in particular, the LED flex tape). Preferably, the material or the winding reel coated in this way complies with the requirements of DIN EN IEC 61340-5-3 and / or ANSI / ESD S541.

[0039] At least one part of the winding roll can preferably comprise at least a part of one or both disc elements, preferably at least on an outer surface facing away from the winding area and / or on an inner surface of the respective disc element facing the winding area. In this way, defined areas susceptible to electrostatic charging can be effectively protected from electrical charging; and preferably, the winding area can be shielded in this way. Particularly preferably, the entire outer surface facing away from the winding area and / or the entire inner surface facing the winding area of ​​the respective disc element is coated (completely or completely) with the coating of antistatic dissipative material to provide effective protection against electrical charging.

[0040] The electrically conductive material preferably comprises at least one or a combination of materials from the following group: polyetherimide (PEI), polyethylene terephthalate (PET), polyetheretherketone (PEEK), copolymer polyoxymethylene (POM-C), polytetrafluoroethylene (PTFE). This allows the coating materials to be selected according to the desired purpose and easily applied.

[0041] At least the coated part of the winding roll, and preferably the entire winding roll, can preferably have a surface resistance in the range of ixio. 4 ß to ixio 9 ß, preferably in the area of ​​ixio 7 ß to ixio 9 β, measured according to the procedures in EIA-541:1988-06 ("Packaging Material Standards for ESD Sensitive Items"). This allows for the creation of safe packaging for electrostatically sensitive components, particularly LED flex tapes.

[0042] The corrugated cardboard preferably has an outer liner and an inner liner, as well as at least one corrugated layer running between them. The outer liner and / or the inner liner can then preferably have a first coating made of the electrically conductive material, which is furthermore preferably – and preferably as a conductive layer – exposed to the outside. Thus, reliable protection for the products to be wound onto it, namely in particular LED flex tapes, can be provided by the winding roller.

[0043] Preferably, the outer cover and / or the inner cover and / or the corrugated surface can also have a second coating made of the electrically conductive material, which is located on the inside of the first coating – preferably as a shielding layer. This further increases the effectiveness of the coating or the ESD-coated winding reel.

[0044] For example, CORSTAT™ or CORTRONIC® can be used as a possible ESD corrugated board or layer.

[0045] The winding space preferably has a width W, in the axial direction, of 5 mm to 20 mm, preferably of 8 mm to 15 mm, and more preferably of 12 mm. This provides sufficient space for accommodating an LED flex tape, while simultaneously ensuring good guidance of the LED flex tape for uniform winding.

[0046] At least one of the disc elements can preferably have at least one recess. This recess can fulfill different functions. Firstly, it provides a kind of inspection window to easily check the type and / or (remaining) length of the wound or to-be-wound LED flex tape. The recess can also serve to make it easier to insert an LED flex tape into the winding chamber.

[0047] The recess preferably extends radially from an outer edge of the disc element distal to the axis of rotation towards the axis of rotation; preferably over at least part or the entire radial height of the winding space. In this way, the recess can also serve to further facilitate threading the LED flex tape into the winding space. For example, an operator can guide an end section of the LED flex tape through the recess, ideally as far as the contact surface. There, they can either hold the end section until the first windings are completed, or pick up or thread the end section into the bottom of the winding space – for example, into the optionally provided holding structure.

[0048] Preferably, both disc elements can each have at least one of the recesses. This allows an operator to preferably utilize the aforementioned advantages from both sides. Preferably, the two recesses can be aligned with each other when viewed in the direction of the axis of rotation. This makes it particularly easy to thread the LED flex tape – for example, using a finger.

[0049] The respective recess can preferably have a width B of at least 10 mm (B > 10 mm), at least 20 mm (B > 20 mm), at least 30 mm (B > 30 mm), at least 40 mm (B > 40 mm), or at least 50 mm (B > 50 mm) when viewed in the direction of rotation around the axis of rotation. Depending on the desired purpose (e.g., inspection window; insertion point for an operator's finger to thread the LED flex tape; etc.) and / or the size of the winding roll, the size of the recess can be selected as needed.

[0050] According to a further aspect, the present invention also relates to a winding system comprising a winding roller according to the invention (as described above) and an LED flex tape which is wound around the axis of rotation in the winding chamber. The winding system exhibits all the advantages of the winding roller.

[0051] Further advantages and embodiments of the present invention are described below with reference to the accompanying figures. These show:

[0052] Fig. 1 shows a perspective top view of a winding roll according to a first embodiment of the present invention,

[0053] Fig. 2 shows a perspective top view of the winding roll according to the invention as shown in Fig. 1 in a different orientation.

[0054] Fig. 3 shows a perspective side view of the winding roll according to the invention as shown in Fig. 2.

[0055] Fig. 4 shows a top view of the winding roll according to the invention as shown in Fig. 1.

[0056] Fig. 5 shows a bottom view of the winding roll according to the invention as shown in Fig. 4.

[0057] Fig. 6 shows a schematic side view of the winding roll according to Fig. 1.

[0058] Fig. 7 shows a perspective view of two winding rolls according to a second embodiment of the present invention in two different sizes, each as a winding system according to the invention with wound LED flex tape. Fig. 8 shows a perspective detail view of one of the winding rolls or winding system according to Fig. 7.

[0059] Fig. 9 shows a perspective detail view of a winding roll according to a third embodiment of the present invention,

[0060] Fig. 10 shows a side view of a winding roll according to a fourth embodiment of the present invention as a further winding system according to the invention with wound LED flex tape, and

[0061] Fig. 11 shows different views of a method for winding an LED flex tape onto a winding roll according to the invention as shown in Fig. 1 and packaging the resulting winding system.

[0062] The figures show different views of different embodiments of a winding roller 1 according to the invention for winding an LED flex tape M by rotating it about an axis of rotation X, as well as the winding system W thus created. In the illustrated embodiments, the winding roller 1 is in particular designed in the form of a disc spool.

[0063] The winding roll 1 is made from a cellulose fiber-based material. This cellulose fiber-based material can be, in particular, paper or cardboard of various compositions, which can be recycled especially readily in the paper stream.

[0064] The winding roll 1 has two disc elements 2 made of the cellulose fiber-based material, as can be seen particularly in Figures 1-3 and 6 – but also in the other figures. The disc elements 2 – or rather their layer(s) 20, which will be described below – can preferably each be made of or consist of corrugated board, as can be seen particularly in Figure 3. Thus, each of the disc elements 2 – or rather their layer(s) 20 – can, for example, be made of or consist of single-wall corrugated board, as shown, such as E-flute corrugated board and / or B-flute corrugated board. Each of the disc elements 2 - or their layer(s) 20 - can preferably be made of or consist of multi-wall corrugated board, such as double-wall corrugated board, such as EE-flute corrugated board and / or EB-flute corrugated board, and / or triple-wall corrugated board, such as EEB-flute corrugated board and / or EBE-flute corrugated board.

[0065] The two disc elements 2 are arranged axially spaced apart from each other with respect to the axis of rotation X in order to define a winding space 3 between them for winding the LED flex tape M, as can be seen in particular from Figures 1-3 and 6. The winding space 3 preferably has a width W, in the axial direction, of 5 mm to 20 mm, more preferably of 8 mm to 15 mm, and most preferably of 12 mm.

[0066] The winding chamber 3 can have a radial outer diameter A with respect to the axis of rotation X, which is preferably defined, viewed in the direction of the axis of rotation X, by an outer contour (here defined by the outer edge K) of one of the disk elements 2, as can be seen, for example, in Figures 1 and 4. The outer diameter A is preferably > 80 mm, > 100 mm, > 120 mm, or > 140 mm.

[0067] The winding roll 1 further comprises a spacer element 4 made of the cellulose fiber-based material, as can be seen, for example, in Figures 2, 3, and 7-9. The spacer element 4—or rather its layer(s) 40, which will be described below—can preferably be made of or consist of corrugated board, as can be seen particularly in the side view of Figure 3. Preferably, the spacer element 4—or rather its layer(s) 40—can be made of or consist of single-wall corrugated board, such as B-flute and / or C-flute corrugated board, as can be seen, for example, in Figure 3. The spacer element 4 - or its layer(s) 40 - may also preferably be made of or consist of multi-wall corrugated board, such as double-wall corrugated board, such as EB-flute corrugated board and / or BC-flute corrugated board, and / or triple-wall corrugated board, such as EEB-flute corrugated board and / or EBE-flute corrugated board.

[0068] The spacer element 4 is at least partially arranged between the two disk elements 2 in such a way as to connect the disk elements 2 in a load-bearing manner, as can be seen in particular in Figures 3, 8 and 9.

[0069] The winding roll 1 preferably has a multilayer structure consisting of several layers 20, 40 of the cellulose fiber-based material, or consists of this material, as can be seen in particular in Figures 3 and 6. Preferably, the spacer element 4 and / or the disc elements 2 each have or consist of at least one layer 40, 20 of the cellulose fiber-based material. As can be seen, for example, in Figures 3 and 6, each of the disc elements 2 consists of a single layer 20 of the cellulose fiber-based material (here, for example, one layer 20 of single-wall corrugated board of type E-flute corrugated board per disc element 2). The spacer element 4 can, as can also be seen in Figures 3 and 6, preferably be formed from or consist of several layers 40 of the cellulose fiber-based material as a layer structure (here, for example, four layers 40 of single-wall corrugated board of type B-flute corrugated board).The multiple layers 20, 40 can preferably be firmly connected to one another; preferably by means of a material-bonded connection, such as adhesive bonding. As can be seen particularly in Figures 7-9, the spacer element 4 can be formed by tabs 5 cut, preferably die-cut, from at least one of the disc elements 2. These tabs can then be bent towards the other disc element 2 and attached to the other disc element 2 by a distal end 50 of the respective tab 5. In the embodiments shown here, this attachment is preferably achieved by adhesive bonding. In principle, it is also conceivable that, for example, the distal end 50 of the respective tab 5 is inserted through a slot (not shown here) in the other disc element 2 and / or is brought into a form-fitting connection with it, for example, by folding. A combination of any connection methods is also conceivable.

[0070] The winding roll 1 preferably has at least two or at least three of the tabs 5. In the embodiment shown in Figures 7 and 8, the winding roll has, for example, four of the tabs 5. In the embodiment shown in Figure 9, the winding roll 1 also has four of the tabs 5, wherein two of the tabs 5 are bent or folded together, or their distal ends 50 are formed together.

[0071] At least one or both of the disc elements 2 can preferably be connected to the spacer element 4 by means of a material-bonded connection, such as gluing, by means of a force-bonded connection, such as plugging, and / or by means of a form-bonded connection, such as folding.

[0072] As can be seen in particular from Figures 2, 3, and 7-9, the spacer element 4 is arranged radially between the axis of rotation X and the winding chamber 3 such that a support surface 6 of the spacer element 4, directed radially away from the axis of rotation X, provides support for the LED flex tapes and at least partially delimits the winding chamber 3 around the axis of rotation X. The support surface 6 can, as shown, for example, in the embodiment of Figures 3 and 6, completely delimit the winding chamber 3 around the circumference with respect to the axis of rotation X. It is also conceivable, with reference to the embodiments of Figures 7-9, that the support surface 6 consists of several support sections 60, which are distributed around the circumference with respect to the axis of rotation X; preferably, with reference to Figures 7 and 8, evenly distributed.At least two or at least three of the tabs 5 shown in the embodiments of Figures 7-9 can preferably form the support surface 6 together. In the embodiment shown here, each tab 5 has a portion of the support surface 6 (here in the form of the support sections 60), which together form the support surface 6. As can be seen particularly in Figure 7, the winding roller 1, preferably the spacer element 4 and here, for example, at least one of the tabs 5, can have a retaining structure 7 for holding an end section E of the LED flex tape M to be wound up. The retaining structure 7 can preferably be formed, as shown here, by a slot in the cellulose fiber-based material (here in the tab 5).

[0073] As can be seen from all the figures, the winding roller 1 may preferably also have a rotary shaft receptacle 8 for receiving a rotary shaft 101 of a drive unit 100 in order to rotate the winding roller 1 by rotating the rotary shaft 101 about the axis of rotation X, as can be seen, for example, from the combination of figures 11A-11D.

[0074] The rotating shaft receptacle 8 can preferably be configured as a recess or through-opening in the cellulose fiber-based material. The rotating shaft receptacle 8 can, for example, be configured as a through-opening in at least one of the disk elements 2 (see Figures 7-9) or extending axially through both disk elements 2 (see Figures 1-5, 10 and 11). The rotating shaft receptacle 8 can preferably be configured as a through-opening in the spacer element 4, as can be seen, for example, in the embodiment shown in Figures 1-5.

[0075] The rotary shaft mount 8 can preferably have a diameter D of 5 mm to 50 mm, of 10 mm to 20 mm, and more preferably of 14 mm.

[0076] The winding roller 1 may preferably further comprise a drive structure 9, which is designed to positively engage a driver 102 of one or the drive unit 100 in a direction of rotation about the axis of rotation X. The drive structure 9 may preferably be arranged offset from the axis of rotation X, as can be seen particularly in the illustrations of Figures 1-5, 7-9 and 11. The rotating shaft receptacle 8 may preferably comprise the drive structure 9, as can be seen, for example, in Figure 10. In the winding roller 1 according to the embodiment of Figure 10, this is made possible by the fact that the rotating shaft receptacle 8 is not rotationally symmetrical. In this case, the rotating shaft receptacle 8 is cyclically symmetrical in the sense of a triangle. It may also have another non-rotationally symmetrical contour, such as an oval or polygonal contour.

[0077] The drive structure 9 can preferably be designed as a recess or through-opening, as can be seen in all exemplary embodiments. The drive structure 9 can preferably be formed in at least one of the disk elements 2 (see the exemplary embodiments according to FIGS. 7 to 9) and / or in the spacer element 4 (see the exemplary embodiment according to FIGS. 1 to 5).

[0078] The drive structure 9 preferably has a diameter d of 5 mm to 15 mm, preferably of 8 mm to 12 mm, and most preferably of 10 mm.

[0079] In a particularly preferred embodiment, the diameter D of the rotating shaft receptacle 8 can be larger than the diameter d of the drive structure 9 (i.e., D > d), as can be seen in particular from the illustrations in Figs. 1 to 5 and 7 to 9.

[0080] The winding chamber 3 can have a radial inner diameter I with respect to the axis of rotation X, which is preferably defined at least by the support surface 6, as can be seen, for example, in Fig. 6. The inner diameter I can preferably be I > 30 mm, I > 40 mm, I > 50 mm, or I > 60 mm.

[0081] The diameter D of the rotary shaft receptacle 8 is preferably less than or equal to the inner diameter I of the winding chamber 3.

[0082] At least one of the disk elements 2 may preferably have at least one recess 10. This can be seen, for example, in the embodiments shown in Figures 1 to 4 and 10. As can be seen in Figures 1 to 4, the recess 10 may preferably extend radially from an outer edge K of the disk element 2 distal to the axis of rotation X towards the axis of rotation X; preferably over at least a portion or, as shown here, the entire radial height H of the winding space 3. As not shown here, both disk elements 2 may each have at least one of the recesses 10. The two recesses 10 may then preferably be aligned with each other when viewed in the direction of the axis of rotation X. The respective recess 10 may preferably have a width B of at least 10 mm, at least 20 mm, at least 30 mm, at least 40 mm, or at least 50 mm when viewed or measured in the direction of rotation around the axis of rotation X.

[0083] At least a portion of the winding roll 1 may preferably have a coating (C, Ci) made of an electrically conductive material. This at least portion of the winding roll 1 may preferably comprise at least a portion of one or both disk elements 2; preferably on an outer surface SA of the respective disk element 2 facing away from the winding space 3 and / or on an inner surface SI of the respective disk element 2 facing the winding space 3. It is also conceivable that each disk element 2 has the coating (C, Ci) made of electrically conductive material on its entire outer surface SA and / or its entire inner surface SI, or the entire disk element 2.

[0084] The electrically conductive material may preferably comprise at least one or a combination of the materials from the following group or consist of this or these: polyetherimide (PEI), polyethylene terephthalate (PET), polyetheretherketone (PEEK), copolymer polyoxymethylene (POM-C), polytetrafluoroethylene (PTFE).

[0085] At least the coated part of the winding roll 1 and preferably the entire (coated) winding roll 1 can have a surface resistance in the range of 1x104 β to 1x109 β, preferably in the range of 1x107 β to 1x109 β, preferably measured according to the methods according to EIÄ-541 : 1988-06 (“Packaging Material Standards for ESD Sensitive Items”).

[0086] The respective corrugated cardboard – in particular, that used to manufacture the disc elements 2 or the spacer element 4 – can have an outer layer 11 and an inner layer 12, as well as at least one corrugated section 13 running between them. The outer layer 11 and / or the inner layer 12 (in the embodiments shown in Figures 1-5 and 11, both with respect to the disc elements 2) can have a first coating (Ci) made of the electrically conductive material, which is preferably provided as a conductive layer exposed to the outside. Preferably, the outer layer 11 and / or the inner layer 12 and / or the corrugated section 13 can also have a second coating (not shown) made of the electrically conductive material, which is provided as a shielding layer located inside the first coating (Ci).

[0087] Figure 11 shows different steps for using the winding roller 1 according to the invention. In a first step, a winding roller 1 according to the invention is provided. This is then, as shown by way of example in Figure 11A, preferably functionally coupled to a drive unit 100. In the embodiment shown here, this means that the rotating shaft mount 8 is placed onto a rotating shaft 101. Preferably, a driver 102 of the drive unit 100 engages functionally in the drive structure 9 of the winding roller 1 mounted on the rotating shaft 101. In a further step, the LED flex tape M to be wound is provided and inserted or threaded into the winding roller 1 with an end section E thereof. For this purpose, as shown, the end section E of the LED flex tape M is inserted, for example, into the holding structure 7. Subsequently, the winding roller 11 is rotated about the axis of rotation X.In the simplest case, this can be done manually. It is also conceivable, as shown, that this can be done using the drive unit 100. For this purpose, the rotating shaft 101 is set into rotation about the axis of rotation X, and thus the winding roller 1 is rotated about the axis of rotation X – preferably with additional support from the driver 102 in the drive structure 9. This causes the LED flex tape M to be wound around the support surface 6 or the spacer element 4 in the winding chamber 3, as shown in Fig. 11C. In Fig. 11D, the winding roller 1 is shown with the LED flex tape M fully wound around the axis of rotation X, together forming the winding system W according to the invention. The end section F of the wound LED flex tape M shown here can then be fixed, for example by means of an adhesive strip or the like, so that the LED flex tape M does not unwind itself. The winding roll 1 with the wound LED flex tape M, as shown in Fig.Figure 11E – i.e., the winding system W – can then be placed, for example, into an outer packaging 200, as shown in Figures nF and 11G, for transport, and the outer packaging 200 can then be closed to securely contain the winding system W. Preferably, the outer packaging 200 is made of the same cellulose fiber-based material as the winding roll 1.

[0088] The present invention is not limited by the embodiments described above, provided it is covered by the subject matter of the following claims.

Claims

Claims:

1. Winding roller (i), in particular disc spool, for winding an LED flex tape (M) by rotating about an axis of rotation (X), made of a cellulose fiber-based material, comprising: • two disc elements (2) made of the cellulose fiber-based material, which are arranged axially spaced apart from each other with respect to the axis of rotation (X) in order to define a winding space (3) between them for winding the LED flex tape (M), and • a spacer element (4) made of the cellulose fiber-based material, which is arranged at least partially between the two disk elements (2) in such a way as to connect the disk elements (2) in a load-bearing manner, wherein the spacer element (4) is arranged radially between the axis of rotation (X) and the winding space (3) with respect to the axis of rotation (X) such that a bearing surface (6) of the spacer element (4) directed radially away from the axis of rotation (X) for the support of the LED flextape (M) limits the winding space (3) at least sectionally around the axis of rotation (X).

2. Winding roll (1) according to the preceding claim, wherein the winding roll (1) has or consists of a multilayer structure of several layers (20, 40) of the cellulose fiber-based material, and / or wherein the spacer element (4) and / or the disc elements (2) each have or consist of at least one layer (40, 20) of the cellulose fiber-based material.

3. Winding roll (1) according to the preceding claim, wherein the spacer element (4) is formed from or consists of several layers (40) of the cellulose fiber-based material as a layer structure.

4. Winding roll (1) according to one of the two preceding claims, wherein the multiple layers (20, 40) are firmly connected to each other, preferably by means of a material-bonded connection, such as gluing.

5. Winding roll (1) according to one of the preceding claims, wherein at least one or both of the disc elements (2) are connected to the spacer element (4) by means of a material-bonded connection, such as gluing, by means of a force-bonded connection, such as plugging, and / or by means of a form-bonded connection, such as folding.

6. Winding roll (i) according to one of the preceding claims, wherein the disc elements (2) are each made of or consist of corrugated board, preferably single-wall corrugated board, such as E-flute corrugated board and / or B-flute corrugated board, and / or preferably multi-wall corrugated board, such as double-wall corrugated board, such as EE-flute corrugated board and / or EB-flute corrugated board, and / or triple-wall corrugated board, such as EEB-flute corrugated board and / or EBE-flute corrugated board.

7. Winding roll (1) according to one of the preceding claims, wherein the spacer element (4) is made of or consists of corrugated board, preferably single-wall corrugated board, such as B-flute corrugated board and / or C-flute corrugated board, and / or preferably multi-wall corrugated board, such as double-wall corrugated board, such as EB-flute corrugated board and / or BC-flute corrugated board, and / or triple-wall corrugated board, such as EEB-flute corrugated board and / or EBE-flute corrugated board.

8. Winding roll (1) according to one of the preceding claims, wherein the spacer element (4) is formed by tabs (5) cut free from at least one of the disc elements (2), preferably die-cut, which are each bent towards the other of the disc elements (2) and are attached to the other of the disc elements (2) with a distal end (50) of the respective tab (5), preferably glued.

9. Winding roll (1) according to the preceding claim, comprising at least two or at least three of the tabs (5), and / or wherein at least two or at least three of the tabs (5) together form the support surface (6).

10. Winding roller (1) according to one of the preceding claims, wherein the support surface (6) completely closes the winding space (3) with respect to the axis of rotation (X) over the circumference, or wherein the support surface (6) consists of several support sections (60) which are distributed over the circumference with respect to the axis of rotation (X), preferably evenly distributed.

11. Winding roller (i) according to one of the preceding claims, wherein the winding roller (i), preferably the spacer element (4), has a retaining structure (7) for holding an end section (E) of the LED flex tape (M) to be wound up, wherein the retaining structure (7) is preferably formed by a slot in the cellulose fiber-based material.

12. Winding roller (1) according to one of the preceding claims, further comprising a rotary shaft receptacle (8) for receiving a rotary shaft (101) of a drive unit (100) in order to rotate the winding roller (1) by rotating the rotary shaft (101) about the axis of rotation (X).

13. Winding roller (1) according to the preceding claim, wherein the rotating shaft receptacle (8) is designed as a recess or through-hole in the cellulose fiber-based material.

14. Winding roller (1) according to the preceding claim, wherein the rotary shaft receptacle (8) is designed as a through-opening in at least one of the disk elements (2) or both disk elements (2) extending axially, and / or wherein the rotary shaft receptacle (8) is designed as a through-opening in the spacer element (4).

15. Winding roller (1) according to one of the three preceding claims, wherein the rotating shaft receptacle (8) has a diameter D, wherein the diameter D is preferably in a range of 5 mm to 50 mm or from 10 mm to 20 mm, or is 14 mm.

16. Winding roller (1) according to one of the preceding claims, further comprising a drive structure (9) which is designed to receive a driver (102) of one or the drive unit (100) in a positive-locking manner in a direction of rotation about the axis of rotation (X), wherein the drive structure (9) is preferably arranged offset to the axis of rotation (X), wherein the rotary shaft receptacle (8), if present, preferably comprises the drive structure (9).

17. Winding roller (1) according to the preceding claim, wherein the drive structure (9) is designed as a recess or passage opening, preferably in at least one of the disc elements (2) and / or in the spacer element (4).

18. Winding roller (i) according to one of the two preceding claims, wherein the drive structure (9) has a diameter d, wherein the diameter d is preferably in a range of 5 mm to 15 mm, or from 8 mm to 12 mm, or is 10 mm.

19. Winding roller (1) according to claims 15 and 18, wherein the diameter D of the rotary shaft receptacle (8) is larger than the diameter d of the drive structure (9).

20. Winding roll (1) according to one of the preceding claims, wherein the winding space (3) has a radial inner diameter I with respect to the axis of rotation (X), which is preferably defined at least by the support surface (6), wherein the inner diameter I is preferably I > 30 mm, or I > 40 mm, or I > 50 mm, or I > 60 mm.

21. Winding roller (1) according to claims 15 and 20, wherein the diameter D of the rotary shaft receptacle (8) is less than or equal to the inner diameter I of the winding chamber (3).

22. Winding roll (1) according to one of the preceding claims, wherein the winding space (3) has a radial outer diameter A with respect to the axis of rotation (X), which is preferably defined by an outer contour of the disk elements (2) seen in the direction of the axis of rotation (X), wherein the outer diameter A is preferably A > 80 mm, or A > 100 mm, or A > 120 mm, or A > 140 mm.

23. Winding roll (1) according to one of the preceding claims, wherein at least a part of the winding roll (1) has a coating (C, Ci) made of an electrically conductive material.

24. Winding roll (1) according to the preceding claim, wherein the at least one part of the winding roll (1) preferably comprises at least one part of one or both disc elements (2), preferably on an outer side (SA) facing away from the winding space (3) and / or on an inner side (SI) of the respective disc element (2) facing the winding space (3). 25- Winding roll (i) according to one of the two preceding claims, wherein the electrically conductive material comprises at least one or a combination of the materials from the following group or consists of this or these: • Polyetherimide (PEI), • Polyethylene terephthalate (PET), • Polyetheretherketone (PEEK), • Copolymer polyoxymethylene (POM-C), • Polytetrafluoroethylene (PTFE).

26. Winding roll (1) according to one of the three preceding claims, wherein at least the coated part of the winding roll (1) and preferably the entire winding roll (1) has a surface resistance in the range of ixio 4 ß to ixio 9 ß, preferably in the range of ix 10 7 ß to ix 10 9 ß, measured according to the procedures in accordance with EIA-541:1988-06.

27. Winding roll (1) according to one of the four preceding claims and one of claims 6 or 7, wherein the respective corrugated board has an outer liner (11) and an inner liner (12) and at least one fluted web (13) extending between them, wherein the outer liner (11) and / or the inner liner (12) has a first coating (Ci) made of the electrically conductive material, which is preferably provided as a conductive layer exposed to the outside, wherein preferably furthermore the outer liner (11) and / or the inner liner (12) and / or the fluted web (13) has a second coating made of the electrically conductive material, which is provided as a shielding layer on the inside with respect to the first coating (Ci).

28. Winding roll (1) according to one of the preceding claims, wherein the winding space (3) has a width W, in the axial direction, of 5 mm to 20 mm, or of 8 mm to 15 mm, or of 12 mm.

29. Winding roll (1) according to one of the preceding claims, wherein at least one of the disc elements (2) has at least one recess (10) which preferably extends radially from an outer edge (K) of the disc element (2) distal to the axis of rotation (X) to the axis of rotation (X), and further preferably at least over a part or the entire radial height H of the winding space (3).

30. Winding roller (i) according to the preceding claim, wherein both disc elements (2) each have at least one of the recesses (10), wherein preferably the two recesses (10) are aligned with each other when viewed in the direction of the axis of rotation (X).

31. Winding roller (1) according to one of the two preceding claims, wherein the respective The recess (10) has a width B of at least 10 mm, or at least 20 mm, or at least 30 mm, or at least 40 mm, or at least 50 mm when viewed in the direction of rotation around the axis of rotation (X).

32. Winding system (W) comprising a winding roller (1) according to one of the preceding claims, and an LED flex tape (M) which is wound in the winding space (3) around the axis of rotation (X).

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