Metal coil transport and storage system

Abstract

The present invention relates to a transport and storage system (7) for metal coils (8), the transport and storage system (7) receiving cylindrical plate-shaped metal coils, particularly oriented horizontally, and includes at least one module, the module being formed of a corrugated cardboard laminate, the liners (1, 4, 6) of the corrugated cardboard layer oriented to extend substantially perpendicularly to the receiving surfaces (18, 24) of the module (12, 20), the receiving surface (18) of module (12) extending along a curve corresponding to a flat, concave, or elliptical shape, and configured to make strip-like or full-surface contact with a portion of the circumferential wall (11) of the coil (8).

Description

Technical Field

[0005]

[0001] The present invention relates to a transport system for metal coils, particularly steel sheet coils. and storage

Background Art

[0002] Plates of steel and other metals are made by rolling a slab made of the corresponding metal material. This slab is usually made by melting a steel material and casting it into a slab mold, and is rolled into a flat steel sheet strip or a flat metal sheet strip. For this purpose, the corresponding metal slab passes through a rolling mill having the corresponding rolling stand, and the thickness of the slab and the thickness of the sheet are reduced for each stand.

[0003] Taking the steel sheet as an example, in this process, a slab with a weight of usually 20 to 40 tons is first heated in a pusher furnace to ensure that the slab reaches a very high temperature at which it can be deformed. Then, this slab is first pre-rolled in a reversible rough rolling stand, and after reaching the target thickness, it is sent to a hot rolling line having many hot rolling stands while still being red-hot at a high temperature.

[0004] Finally, a hot strip is obtained, and the thickness of the hot strip can be in the range of several mm to several cm.

[0005] To make a thin sheet from this hot strip, this hot strip is rolled in a cold rolling mill until it reaches the target sheet thickness. For example, in the case of a thin sheet used in the automobile industry, the target plate thickness is 0.3 to 1 mm.

[0006] Since the widths of these strips are adjusted, due to the change in thickness from the slab to the hot strip and the cold strip, the continuous metal sheet strip becomes very long, and thus, at the end of the rolling process, it is wound up in a so-called bundle or coil shape in both the hot rolling process and the cold rolling process.

[0007] ​Thin sheets or cold-rolled strips can also be coated after cold rolling. Metal coatings are typically applied using a hot-dip galvanizing process, for example, to form a hot-dip galvanized layer.

[0008] For this purpose, these strips are unfolded again, passed through a galvanizing unit, and then wound up again.

[0009] The weight of such steel coils is at most equivalent to the weight of the slab, but multiple coils can be made from a single slab, resulting in a wound coil weight of typically 4 to 40 tons. The weight of the coil may also increase slightly after any coating processes that may be performed, particularly galvanizing.

[0010] To move such coils, a special vehicle is used that allows a mandrel to be passed through a vertical opening corresponding to the longitudinal axis of the cylindrical coil, thereby lifting and moving the coil. Such a vehicle is known, for example, by WO2016044891. Therefore, it is desirable to transport such coils in a horizontal position so that the eye portion of the coil can be accessed. In a vertical position, the eye portion of the coil faces upward, making it impossible to access the longitudinal axis of the coil as described above.

[0011] In all stages of stacking and transportation, it is naturally crucial to avoid applying pressure to individual points on the steel coil. This is because pressure can deform the metal sheets or damage the metal coating. As is known, indentations formed in this way can spread across several layers within the coil. As a result, these areas must be classified as defective, and in some cases, even discarded.

[0012] Such coils can, of course, be transported by truck, train, or ship.

[0013] Because coil surfaces and metal plates are prone to deterioration, and because coils are extremely heavy, they can pose significant risks during use. Therefore, such coils must be transported in a safe and gentle manner. When transporting heavy loads, especially integrated loads like steel coils, particular attention must be paid to load distribution. In other words, problems can arise if point loads or excessive axle loads are applied during transport. In this regard, particular attention must be paid to domestic and international freight transport regulations.

[0014] Various approaches have already been attempted, particularly for transporting coils within containers.

[0015] Furthermore, due to the considerable weight of the steel coils, only one or at most two can be loaded per truck or container. In particular, during maritime container transport, it is necessary to prevent any movement of the steel coils. This is because if a 23-ton steel coil moves, it will cause permanent damage to any outer covering.

[0016] EP190730 1 B1 discloses a storage system for housing metal coils in polystyrene blocks. In this system, the polystyrene block receiving the steel coil has a shape corresponding to a recess corresponding to the radius of the coil and receives a portion of the coil's circumference. This portion of the circumference is large enough so that the steel coil does not easily come out of the block. If multiple coils are present, rectangular blocks are inserted as spacers between the coils, and between the first and last coils and the corresponding container walls. This is to secure the coils in the longitudinal and transverse directions.

[0017] IN202023008261A1 discloses a similar storage system, but this system is made from a different material, such as compressed paper.

[0018] AT522138A1 discloses a flexible, adaptable support beam that penetrates a polystyrene block, and a concentrated, continuous polystyrene support beam.

[0019] DE102017113499A1 discloses a wooden transport protection means for coils, in which a thin layer of corrugated cardboard can be placed between the wood and the coil to prevent the coil from being dented.

[0020] JP20220182 34 A2 discloses a corrugated interlocking system that can be used to transport cylindrical objects. However, this system cannot be used for steel coils because the dimensions of the interlocking connections are too small.

[0021] EP1880899A1 discloses a corrugated cardboard storage system, which consists of stacked upright pieces of corrugated cardboard forming a simple partially cylindrical support, further provided with a plastic layer. In such a configuration, it is not possible to support or hold a steel coil in place.

[0022] WO 200913 9643A1 discloses a similar system in which corrugated cardboard is supported by upright support structures made of corrugated cardboard, and these upright support structures are connected using sleeves. In this configuration, it is too unstable to fully perform its function.

[0023] Furthermore, JP2019081614A2 discloses a fitting system consisting of plate-like elements that surround a coil with a corrugated cardboard rib structure. Firstly, such a system is not particularly stable, and it is almost impossible to use such a system in a limited space. [Overview of the Initiative] [Problems that the invention aims to solve]

[0024] The problem to be solved by the present invention is to provide a transportation and storage system for metal coils, particularly steel coils, that can securely store heavy metal coils, ensure optimal load distribution in the transportation and storage system, and can be easily and problem - free discarded.

Means for Solving the Problem

[0025] The above problem is solved by a transportation and storage system having the features of claim 1.

[0026] Dependent claims disclose advantageous variants.

[0027] Known systems in the prior art have several important problems. First, the price of polystyrene blocks has risen significantly, and there are major problems regarding disposal, or additional costs for international transportation are incurred because the polystyrene blocks need to be returned.

[0028] Also, particularly in the case of steel made by a sustainable method such as greentec steel (registered trademark), it is not desirable for such sustainably produced steel to be delivered using a transportation system in which the steel is not made in a sustainable form.

[0029] Surprisingly, it has been found that the above requirements can be met by a cardboard transportation and storage system.

[0030] However, in this case, the cardboard is not used such that a wide surface contacts the item to be transported as in the normal case. Instead, the orientation of the cardboard is basically selected such that the end face extending in the transverse direction with respect to the corrugation faces the item to be transported and / or stored, in this case the coil.

[0031] Corrugated cardboard is a cellulose product made from paper. It is constructed by bonding at least one smooth paper web to at least one fluted paper web, although it is common to use up to seven of these webs. The defining characteristic of corrugated cardboard is its fluting configuration. This fluting configuration is known to inherently increase the so-called second moment of area, thereby improving the strength of the lightweight paper. In this regard, various types and combinations of fluting can be distinguished, and which type is more suitable depends on the requirements and the area of ​​application.

[0032] Cardboard is one of the most common packaging materials, primarily used for shipping packaging, such as collapsible cartons and expandable boxes. The advantages of cardboard are its lightness and stability. Thanks to the use of paper as the base material, cardboard packaging is not only easily and completely recyclable, but can also be reused in many cases. Today, so-called heavy-duty cardboard is often used for cardboard packaging, which can be securely placed on, for example, Euro pallets and can hold heavy items such as automotive parts. Such heavy-duty cardboard boxes can be folded and returned to their original size, taking up only a small portion of their volume, thanks to their clever folding patterns, and can be reused many times.

[0033] The corrugated structure is the most important and decisive feature of corrugated cardboard, giving it exceptional stability and strength. In this structure, for example, there is a flat inner liner on which the first corrugated web is located, an intermediate liner is placed on the first corrugated web, followed by a second corrugated web, and then an outer liner. This configuration yields a so-called double-flute structure, in which the first corrugated web can have a different wave density than the second corrugated web, thereby further enhancing stability. One of the advantages of such a corrugated structure is the significant improvement in stability that cannot be obtained when three paper webs are stacked on top of each other. liner , wave web and outer liner This is in contrast to a configuration that has been established.

[0034] As explained above, this is due to an increase in the second moment of area. The corrugated web also has the characteristic of not shifting because it is bonded to both the inner and outer liners in the peak region of the flute morphology. Thanks to the voids thus formed, the corrugated cardboard becomes very light for its volume and also provides thermal insulation. In the single-flute corrugated cardboard described above, the outer and inner liners are bonded to the corrugated web. In the case of multi-flute corrugated cardboard, an intermediate liner and an additional corrugated web are added.

[0035] Cardboard is made by a so-called corrugator. Paper web is passed through corrugated rollers and embossed using heat, moisture, and pressure. The cross-sectional shape of the embossed flutes resembles a sine wave. The type of flute differs depending on the flute pitch (t) and flute height (h). The distance between the valleys of two flutes is the flute pitch (t). The height between the valleys and peaks of the flutes is the flute height (h).

[0036] Within the realm of single flutes, the C flute (medium flute), B flute (fine flute), and E flute (ultrafine flute or micro flute) are the most commonly used types of flutes. As mentioned above, in a multi-flute complex, the flute types can also differ in subsequent flutes.

[0037] To increase the stability of corrugated cardboard, multiple layers are bonded together. Typical flute combinations in the double-flute range include, for example, BC flute, EB flute, or EE flute. In triple-flute corrugated cardboard, ACA, BAA, EBC, or BBC are frequently used flute combinations.

[0038] However, for the purposes of this invention, any other combination of known flute types is also possible and intended.

[0039] Not only can the combination of flutes be selected, but the paper quality of the liner paper and flutes can also be chosen according to the load during transport and packaging.

[0040] For the liner paper, so-called kraft liner or test liner is used, and for the flute, so-called semi-chemical pulp or laminated paper is used.

[0041] For the delivery of light cargo, single-flute or double-flute corrugated cardboard is used. Triple-flute corrugated cardboard adequately protects heavy and fragile goods and can be used as an alternative to wooden systems. In particular, exports are subject to various climatic conditions, but triple-flute corrugated cardboard can usually withstand them without problems. Surprisingly, single-flute corrugated cardboard, and especially double-flute corrugated cardboard, in conjunction with adhesives, has been found to be the most suitable method for this application in terms of the combination of fixed load and load-bearing capacity. Therefore, in the applications of the present invention, single-flute or double-flute corrugated cardboard can be advantageously used as transport and storage materials.

[0042] The quality of corrugated cardboard is inspected using various testing systems. The DIN 55468 standard was developed based on the standards of the German Corrugated Cardboard Industry Association.

[0043] For corrugated cardboard solutions to comply with this standard, their burst strength, puncture strength, edge crush strength, etc., must be within a specific range of values.

[0044] Thus, in the transport and storage system according to the present invention, corrugated cardboard is used in the form according to the present invention, and the corrugated web is constructed perpendicular to the outer liner, inner liner, or intermediate liner, and in addition, preferably, the flutes are constructed to extend transversely. In technical terms, this is called longitudinally fluteted corrugated cardboard. This is unusual because the corrugated web is usually constructed so that the load is applied to the inner or outer liner.

[0045] Furthermore, the present invention makes it possible to combine corrugated cardboard to form a corrugated cardboard laminate such that it forms a composite or laminate having at least two flutes. However, composite or laminates with three or more flutes, particularly more than 10 flutes, and more preferably more than 20 flutes, can also be used. Surprisingly, however, it has been found that even single-flute or double-flute corrugated cardboard composites have sufficiently high stability at relatively low fixed loads.

[0046] According to the present invention, the corrugated cardboard is further bonded with an adhesive that is resistant to fungal attack, and in particular, with an adhesive that does not serve as a breeding ground for traditional fungi or other microorganisms, such as a white adhesive, a spray adhesive, or a hot melt adhesive.

[0047] Furthermore, the paper used to form the cardboard can be in a form that is resistant to fungi.

[0048] Preferably, an adhesive that does not dissolve when exposed to moisture is used. For this purpose, a 24-hour water bath test can be performed. In particular, the corrugated cardboard is bonded or joined to be water-resistant.

[0049] In particular, the paper itself can be in a form that is moisture-resistant, and especially can have moisture-resistant bonding. Furthermore, this can be omitted when using high-quality kraft liner.

[0050] Basically, the transport and storage system according to the present invention can be used in two variations. In one embodiment, the corrugated cardboard forms two-point or three-point support for the coil.

[0051] The transport and storage system is composed of one or more modules to form two-point or three-point support.

[0052] In one embodiment, the transport system consists of a single module cut out from a corrugated cardboard block, forming a region with a triangular cross-section. In this case, the opening formed by the triangular cutout faces upward and is wider than the diameter of the coil.

[0053] In one embodiment including multiple modules, the first module is configured as a triangular shape, specifically a right-angled triangle shape where the legs of the triangular shapes form a right angle between them. In this case, the corrugated cardboard is cut such that the hypotenuse of the triangular shape corresponds to a cross section in which flutes or corrugations are visible.

[0054] These first modules support the coils on triangular slanted sections so that the coils are positioned straight on each module. In this case, the two modules are positioned opposite each other, with one leg resting on the floor and the other leg extending parallel to the side wall of a container or other transport vessel. The spacing between modules may be adjusted by a second module, which is inserted, for example, as a flat module between the wall of a container and the leg of a module extending parallel to it.

[0055] This means that by using a second module having a different thickness, the distance between the container wall and the triangular-shaped legs extending parallel to it can be determined, thereby establishing the distance between the first modules, and thereby determining the size of the coil opening formed by the two first modules.

[0056] If necessary, an even smaller distance can be established by trimming the corners formed by the triangular-shaped hypotenuse and the legs that touch the ground, where two corners are opposite each other.

[0057] A third module can be placed on the floor of the container, extending across the entire floor surface, on which the first and second modules are placed. Naturally, these can also be made from single-flute or multi-flute corrugated cardboard.

[0058] If the corners of the first module are trimmed, a fourth module can be placed between the two trimmed corners. This fourth module extends longitudinally between the two first modules, for example, along the entire length of the coil, preferably so as to be flush with the trimmed edges of the triangular-shaped hypotenuses.

[0059] As described above, the hypotenuse of each first module allows the coil to be placed upright, and both first modules can extend along the entire length of the coil or along a portion of its length. The coil can also be placed upright on the fourth module to form a third support point, thereby the fourth module performing a load-bearing function on the one hand, and a separating function on the other, separating the triangular-shaped first modules from each other.

[0060] Instead of a continuous, flat configuration of the first modules, these first modules may extend only over a portion of the length of the coil, for example, arranged in an alternating pattern so that the first modules are successively arranged in an alternating pattern over the length of the coil, and also placed opposite the coil in an alternating pattern. In this embodiment, a fourth module may also be provided, with the first modules placed opposite this fourth module, but if the corner portions are not trimmed, the modules on both sides may be arranged so that they lock into each other.

[0061] Preferably, the module can extend over a length of more than 20%, particularly more than 30%, and preferably more than 40% of the coil width in total. In relation to the present invention, coil width refers to the size of the coil along the longitudinal axis of the eye portion of the coil.

[0062] When multiple coils are housed in a container, corrugated cardboard spacer elements can be placed against the end walls of the container, such as the back wall, extending across the entire width or a portion of the container's width. Such spacer elements can, of course, be placed between the coils, and therefore also in the longitudinal direction between the first, second, third, and fourth modules. This allows the multiple coils within the container to be secured longitudinally.

[0063] In this case, the contact area of ​​the first module with respect to the coil must be selected so that the coil is held securely and does not move when the container is transported. This is especially true when this contact area is located above at least one-quarter, preferably one-third, of the horizontal height of the coil, and particularly above half the horizontal height of the coil.

[0064] In another embodiment of the present invention, the first module is configured in the form of a block, in which an inner wall is formed in the block in a shape corresponding to a sector of an elliptical cylinder, and this inner wall is configured to receive a portion of the cylindrical peripheral wall of the coil over its entire surface.

[0065] For this purpose, for example, a corresponding cutout having a radius corresponding to the radius of the coil to be received is cut out from a single rectangular block of cardboard.

[0066] The resulting recess opens upwards.

[0067] In principle, the recesses in the module can be implemented to correspond to elliptical sectors rather than curves that precisely conform to the coil radius. This creates a gap that opens upwards, which can be filled with cardboard or reusable rubber anti-slip mats. This allows for the transportation of modules of the same size while tolerating slight deviations in coil diameter, particularly deviations of less than 10%, preferably less than 5%, of the outer diameter.

[0068] In particular, if the receiving surface has an elliptical curve, the gap between the receiving surface and the circumferential wall of the coil can be filled with a wedge-shaped fitting piece or rubber mat that conforms to the elliptical surface on one side and to the radius of the coil on the other side.

[0069] The depth of the cutout is determined so that the coil is supported within the cutout to at least one-quarter, especially one-third, of its diameter, and more specifically, more than one-third but not more than half.

[0070] Furthermore, it is possible to ensure that the monolithic corrugated cardboard block does not extend across the entire width of the container, and in this regard, the distance from the wall can be established using the second module.

[0071] In another embodiment, the corrugated cardboard block is not a single, integrated structure, but is divided, particularly in the middle. This forms at least two first modules, each of which receives, for example, less than one-quarter of the circumference of the coil.

[0072] In another embodiment, for example, modules of the same shape are made that receive less than one-quarter of the circumference of the coil and are positioned symmetrically opposite to each other on both sides of the coil. For example, three modules can be provided on each side, covering more than 20%, preferably more than 40%, of the coil width in total. This preferably allows the heavy weight of the metal coil to be safely supported and ensures that the one-piece module design is an efficient manufacturing method and easy to handle. A one-piece module design is, in other words, one that uses the same or similar modules arranged symmetrically around the coil on both sides.

[0073] For example, if the coil diameter is 800mm to 1800mm, such blocks may have a height of 600mm to 1000mm on the side facing the wall of the transport vehicle and a height of 15mm to 20mm on the side receiving the coil. The width of these modules can be selected within the range of 1100mm to 1245mm, preferably so that these modules can be accommodated in a standard container of approximately 2400mm to 2500mm, leaving a gap of 10mm to 100mm between the modules positioned on both sides around the coil. This facilitates handling when inserting the modules and ensures optimal force distribution across the floor of the transport vehicle, thus preventing the occurrence of load peaks at isolated points. The depth of the modules can be varied according to requirements, but it is advantageous to select a depth within the range of 100mm to 300mm to facilitate handling and insertion into the transport vehicle and ensure sufficient stability.

[0074] Furthermore, the first module and the third module described above can be spaced apart so that the corresponding sub-regions for receiving the coil correspond to each other, and subsequently, it is also possible to accommodate less than one-quarter of the circumference of the coil.

[0075] In this case, it is naturally possible to include a third module positioned on the floor.

[0076] To facilitate handling, the cardboard blocks can be subdivided and arranged with respect to the length of the coil so that, for example, three corresponding first modules on each side, i.e., a total of six modules, are arranged facing each other along the entire length of the coil, i.e., across the so-called coil width. A fifth module can be provided between these first modules, which space these first modules longitudinally apart from each other and fix them in place.

[0077] Tests revealed that corrugated cardboard stacked in the manner described above, i.e., stacked on edges extending perpendicular to the corrugation, exhibited such high stability that it was not necessary to support the metal coil across its entire surface.

[0078] This subdivision of the first module (which also applies to the first embodiment) makes it easier to comply with labor law regulations that specify the maximum weight of blocks or heavy objects that are operated manually. This, advantageously, allows for operation by one person. This is possible, as mentioned above, when the module depth is 100mm to 300mm, preferably 150mm to 250mm.

[0079] In one embodiment, to further reduce the weight of the module, a chamber-shaped void region can be provided in the module. Such a void region is preferably a punched-out region located below the actual receiving surface. Multiple void regions can also be provided, with partition-like or truss-like support structures forming between them. This further improves handling. In particular, this reduces weight and therefore improves work safety. In a particularly advantageous form, the cutout thus formed in the upper region of the module can be implemented in the form of a carrying handle, thereby facilitating handling and reducing weight.

[0080] Furthermore, when corresponding recesses for the coil are cut out or punched out, cut-out pieces are created, so that they ultimately take the shape of a slice of pie. These cut-out pieces can be easily inserted longitudinally and combined with each other to fix the weight of the coil. Such cut-out pieces can also be used as fifth modules to create gaps between the first modules.

[0081] In general, that is, in all the embodiments described so far, recesses can also be provided on the upper side of the module that is in contact with the wall of the container or the wall of the transport means, into which force-distributing elements can be inserted to distribute the forces generated on the wall of the container. These force-distributing elements can be made of, for example, wood or cardboard, and especially when multiple modules are used on each side of the coil, they preferably extend along the entire length of the container to distribute the shaking during transport and the lateral forces generated across the entire wall.

[0082] Since condensation often occurs inside containers, it is advantageous to use corrugated paper, and the paper can optionally be made moisture-resistant. The same applies to adhesives; it is desirable that the adhesive is also water-resistant.

[0083] To further protect each element, a single layer of silicone paper or a similar moisture-proof material can be placed between the module's receiving surface and the coil.

[0084] One of the advantages of this invention is that, surprisingly, the corrugated cardboard has remarkably high stability, sufficient for use in transport and storage systems, even when goods are placed on its edges in a manner different from its traditional use. Another advantage is the use of a sustainable storage system that allows for endless use, as it can be reused multiple times as needed and is easily recyclable at the end of its use cycle. Furthermore, because it uses renewable raw materials, it is also thermally recyclable.

[0085] Thus, the present invention relates to a transport and storage system for metal coils, the transport and storage system receiving cylindrical plate-shaped metal coils, particularly oriented horizontally, and includes at least one module, the module being formed of a corrugated cardboard laminate, the liner of the corrugated cardboard layer being oriented to extend substantially perpendicularly to the receiving surface of the module, the receiving surface of the module extending along curves corresponding to flat, concave, or elliptical shapes, and configured to make strip-like or full-surface contact with a portion of the circumferential wall of the coil.

[0086] In one example of modification, one or more of the modules extend over a length that is greater than 20% of the coil width in total, particularly greater than 30%, and preferably greater than 40%.

[0087] In one modification, modules of similar shape are arranged symmetrically opposite each other on both sides of the coil with respect to a vertical plane passing through the coil's longitudinal axis. This simplifies the manufacturing of the modules and reduces the operating weight without compromising transport stability.

[0088] In one example of modification, the receiving surfaces of one or more modules, and possibly additional modules, form two-point or three-point support for the coil.

[0089] In one example of modification, the module has a cutout region which is a triangular-shaped area in cross-section, and the opening of this triangular cutout faces upward and is wider than the diameter of the coil.

[0090] In one example of modification, at least two modules are formed, and these modules are configured with a triangular cross-section, specifically a right-angled triangular shape where the triangular legs are perpendicular to each other.

[0091] In one example of modification, the modules are configured to have a triangular cross-section, each module extends over only a portion of the length of the coil, and the broad sides of the modules are partially in contact with each other. The receiving surface They are arranged so as to be offset from each other.

[0092] In one example of modification, the corners of the triangular-shaped modules are each trimmed, and opposing triangular-shaped modules are arranged so that their vertical planes are in contact with each other.

[0093] In one example of modification, the module is configured as a right-angled triangular shape in which the legs form a right angle with each other in its cross-section.

[0094] In one example of modification, at least one cylindrical element extends away from the receiving surface, through the module and / or adjacent modules, toward the outer surface of the module and / or adjacent modules.

[0095] In one example of modification, the at least one cylindrical element is mounted inside the bore by positive or negative fitting.

[0096] In one example of modification, the bore is formed radially outward with respect to the radius of the receiving surface, or outward at an angle with respect to the radial direction.

[0097] In one modified example, the cylindrical element is configured as a solid cylinder or a hollow cylinder.

[0098] In one modification, the cylindrical element is made of metal, plastic, or corrugated cardboard.

[0099] In one modified example, the cylindrical element extends through the bore and has an end that engages with a corresponding face of one or more of the modules, or the cylindrical element is recessed in the region of the receiving surface by 1 to 100 mm, particularly 2 to 50 mm, preferably 2 to 20 mm, and spaced apart by a gap.

[0100] In one modification example, the cylindrical element contacts the bottom wall of the container or the load-bearing beam of the entire transport configuration. This is advantageous because the force of the supported coil is transmitted to the floor or load-bearing beam of the entire transport device.

[0101] In one example of modification, a plurality of bores and a plurality of cylindrical elements distributed around the circumference of the receiving surface extend through one or more of the modules.

[0102] In one modified example, the receiving surface of the module is flat such that the contact surface has a surface corresponding to the strip.

[0103] In one example of modification, the corrugated cardboard, or the laminate of the corrugated cardboard, or the corrugated cardboard and laminate formed by the corrugated cardboard and the laminate are bonded to each other in a water-resistant manner.

[0104] In one modified example, the material of the liner of the corrugated cardboard is kraft liner.

[0105] In one example of modification, the corrugated web is made from semi-chemical pulp or synthetic paper.

[0106] In one example of modification, the module has at least one void region. This void design allows for weight optimization while ensuring sufficient stability and force absorption.

[0107] In one example of modification, the module has multiple void regions, and a web-like or truss-like support structure is formed between these void regions.

[0108] In one example of modification, the liner and the corrugated layer are bonded together to have moisture resistance, particularly water resistance.

[0109] In one modified example, the corrugated cardboard layers are assembled using the liner to bond to each other across their entire surface to form a corrugated cardboard laminate, thereby forming a composite or laminate containing at least two flutes, particularly triple flutes, preferably a number of flutes greater than 10, more preferably a number of flutes greater than 20.

[0110] In one example of modification, the material forming the corrugated cardboard is equipped or bonded to be moisture-resistant and / or fung-resistant.

[0111] In one variation, the two modules are arranged facing each other, so that one leg rests on the floor and a vertical leg perpendicular to this leg extends away from the floor.

[0112] In one example of modification, a slender rectangular module is placed between the legs and the container wall to adjust the spacing between the modules, particularly the spacing from the container wall.

[0113] In one example of modification, the modules are configured to have a triangular cross-section, each module extends over only a portion of the length of the coil, and the broad sides of the modules are partially in contact with each other. Receiving surface They are arranged so as to be offset from each other.

[0114] In one example of modification, the corners of the triangular-shaped modules are each trimmed, and opposing triangular-shaped modules are arranged so that their vertical planes are in contact with each other.

[0115] In one example of the modification, the cross-section of the module is a right-angled triangular shape, particularly because the legs form a right angle with each other.

[0116] In one modification, the module stands directly or indirectly on the floor of the container by legs extending perpendicularly to the first legs, and the triangular slanted sides of the module are provided with the receiving surface in a shape corresponding to a recessed or elliptically curved cylindrical sector formed in contact with the circumferential wall of the coil, wherein the radius of the receiving surface is sized to correspond to the outer radius of the coil, or the elliptically curved is such that the deviation from the outer radius of the coil is up to 100 mm, in particular up to 50 mm.

[0117] As one variation, if the receiving surface has an elliptical curve, the gap between the receiving surface and the peripheral wall of the coil is filled with a wedge-shaped fitting piece or a reusable rubber element such as an anti-slip mat, with one side conforming to the elliptical shape of the surface and the other side conforming to the coil radius.

[0118] In one modified example, the modules are spaced apart from each other in the longitudinal central region of the coil, particularly by 1 mm to 100 mm, preferably 5 mm to 50 mm, and each receiving surface supports a portion of the circumference of the coil's peripheral wall, and the height of the modules is selected to support more than one-third, particularly half, of the coil's diameter.

[0119] In one modified example, the piece cut out from the module is configured to secure the cargo and to separate the modules or the coils from each other.

[0120] In one example of modification, a corrugated cardboard module, preferably extending from one container wall to the opposite container wall, is positioned between the container floor and legs extending parallel to this floor.

[0121] Another aspect of the present invention relates to a method for using corrugated cardboard bonded in a water-resistant manner in a transport and storage system for sheet metal coils.

[0122] Another aspect of the present invention relates to a method for using antifungal or antimicrobial corrugated cardboard in a transport and storage system for sheet metal coils.

[0123] Another aspect of the present invention relates to a method for using a waterproof and / or antifungal adhesive for corrugated cardboard in a transport and storage system for metal coils.

[0124] A further aspect of the present invention relates to a method of using silicone paper as an intermediate layer between a module and the coil housed thereon, and as a cover for covering areas not covered by the coil.

[0125] The present invention will be described using embodiments with reference to the drawings. [Brief explanation of the drawing]

[0126] [Figure 1] This diagram shows the basic structure of double-flute corrugated cardboard. [Figure 2] This is a diagram of a flute, along with its dimensions. [Figure 3] This is a diagram of single-flute corrugated cardboard. [Figure 4] This is a diagram of double-flute corrugated cardboard. [Figure 5]This is a diagram of triple-flute corrugated cardboard. [Figure 6] This figure shows a coil in the transport and storage system according to the present invention. [Figure 7] This diagram shows cutouts for securing cargo. [Figure 8] This is a diagram showing a transport and storage system that includes triangular-shaped modules. [Figure 9] This figure shows triangular-shaped modules arranged so as to be offset from one another. [Figure 10] This figure shows another embodiment of a triangular-shaped module. [Figure 11] This diagram shows a triangular-shaped module that includes trimmed corners and inserted vertical rails. [Figure 12] This figure shows an embodiment that includes a module with a cutout for the circumferential wall of a cylinder. [Figure 13] This is a side view of the module shown in Figure 12. [Figure 14] This diagram shows a module with a chamber-shaped void space, but without any components mounted on it. [Figure 15] This is a diagram showing a module that includes reinforcing elements. [Figure 16] This figure shows another embodiment including a module with reinforcing elements. [Modes for carrying out the invention]

[0127] Figure 1 shows the basic structure of double-flute corrugated cardboard. Following the inner liner 1, which is a layer of flat paper, is the first corrugated web 2. This first corrugated web 2 is bonded to the inner liner 1 with its flute peaks 3 facing the inner liner 1.

[0128] An intermediate liner 4, which has a flat paper surface similar to the inner liner 1, is placed opposite the corrugated web 2. Another corrugated web 5, which is lower in height and has a small distance (t) between the peaks 3 of the flutes, is placed opposite the intermediate liner 4. The outer liner 6 is also a flat paper web, which is glued to the corrugated web 5 and positioned opposite the peaks 3 of the flutes.

[0129] The paper used for this is a thick, tear-resistant paper, and in particular, so-called kraft liner paper is used, at least on the outside, to enhance stability and protection against moisture.

[0130] Each sheet, such as the inner liner 1, the intermediate liner 4, and the outer liner 6, is bonded to the corrugated webs 2 and 5 in a water-resistant manner.

[0131] According to the present invention, pure cornstarch adhesive has been found unsuitable for use in corrugated cardboard according to the present invention. This is because it cannot withstand climatic conditions, particularly humidity, and may also serve as a breeding ground for fungi. Adding resin to cornstarch adhesive significantly improves its resistance to humidity and mold.

[0132] Figure 2 shows a diagram of the end face of a corrugated web, indicating the corrugation pitch (t) and corrugation height (h). The distance between the peaks of two flutes is the flute pitch (t), and the height between the trough of one flute and the peak of the next flute is the flute height (h).

[0133] In principle, single-flute, double-flute, or multi-flute corrugated cardboard can be used. This is because, according to the present invention, in any case, multiple layers of laminated corrugated cardboard are produced and bonded together across their entire surfaces.

[0134] Typical flute combinations within the range of double flutes according to standards are BC flute, EB flute, or EE flute. In triple flute corrugated cardboard, ACA, BAA, EBC, or BBC flute combinations are common. However, depending on the requirements, any desired combination of known flute types such as K flute, A flute, C flute, B flute, D flute, E flute, F flute, G flute, and N flute is possible.

[0135] Kraft liner is used as the liner material. For the corrugated section, semi-chemical pulp or synthetic paper is selected, but various combinations are possible.

[0136] Depending on the climatic conditions, these papers can be made moisture-resistant, biocide, and antibacterial. In particular, they can be in an antibacterial form.

[0137] To reiterate, Figures 3, 4, and 5 basically show the structure of a single flute, a double flute, and a triple flute.

[0138] According to the present invention, block-shaped modules are formed by laminates of corrugated cardboard. Therefore, combinations of triple-flute, double-flute, and single-flute corrugated cardboard are possible and desirable, and in particular can be used to establish the precise width of each module. In this case, the corresponding single-flute, double-flute, or triple-flute corrugated cardboard is configured such that their outer liners touch and bond to one another, and so, in addition to the usual bonding of corrugated cardboard in single-flute, double-flute, or triple-flute structures, multiple additional corrugated cardboards are bonded to each other across their entire surfaces.

[0139] In this case as well, adhesives used in corrugated cardboard manufacturing can be used, and in particular, weather-resistant, moisture-resistant, and heat-resistant adhesives can be used for this connection. Specifically, adhesives containing cornstarch, synthetic resins, and starch adhesives can be used for wet-strength bonding of each web.

[0140] Figure 6 shows the transport and storage system 7. It shows a cylindrical coil 8 visible from the end face 9, which has a concentrated hollow cylindrical opening 10a surrounding the longitudinal axis 10. The coil 8 has a circumferential wall 11. Module 12 is configured to be in contact with the circumferential wall 11.

[0141] In relation to the legs 13 and 14, module 12 is in a right-angled triangular shape, in particular, where the legs 13 and 14 form a right angle.

[0142] Module 12 is supported by a flat, vertical first leg 13 that faces the container wall 15. Module 12 stands on the container floor 16 with a leg 14 extending perpendicularly from this first leg 13.

[0143] In one embodiment (Figures 6 and 7), the hypotenuse of the triangular-shaped module 12 department A receiving surface is provided that is in contact with the peripheral wall 11 of the coil 8 and corresponds to a recessed, curved cylindrical sector, and this peripheral wall of the coil 8 11 Preferably, it is configured to be in overall contact with the surface of the peripheral wall 11 of the coil 8. In particular, this recessed and curved receiving surface 18 The radius corresponds to the outer radius of coil 8.

[0144] These modules 12 can be spaced apart from each other in the longitudinal central region 19 of the coil 8, with each receiving surface 18 supporting a portion of the circumference of the peripheral wall 11 of the coil 8, and the height H of the module 12 is preferably selected to support at least one-third, and particularly at least half, of the diameter of the coil.

[0145] Figure 7 shows how the remaining portion 19, cut off from module 12, is positioned in front of the end face 9 of coil 8 to secure the cargo and space it apart from another coil 8.

[0146] Figure 8 shows an embodiment in which a module 20 with a triangular cross-section is used, in which one leg 21 rests on the floor and a vertical leg 22 extending away from the floor 23, forming a right angle with the leg 21.

[0147] In this case, the corresponding coil 8 connects the legs 21 and 22. Receiving surface The 24 is in a strip-like shape and is in contact with a portion of the surrounding wall 11. To adjust the spacing between the two modules, in particular the spacing from the container wall, a slender rectangular module 25 is placed between the leg 22 and the container wall 15.

[0148] Figure 9 illustrates this again schematically. In this, the module 20 is configured with a triangular cross-section, and each module extends only over a portion of the length of the coil 8, with the wide sides 26 of the modules partially touching each other. Receiving surface The 24s are arranged so that they are offset from each other.

[0149] Here too, module 25 is provided to adjust the lateral space.

[0150] Figure 10 again illustrates this schematically in a perspective view, where these modules are set to a specific width that matches the diameter of the coil. 20 It clearly shows how they slide against each other.

[0151] Figure 11 shows another embodiment in which the corners of the triangular-shaped module 20 are each cut off, and two triangular-shaped modules 20 are arranged with their vertical surfaces 27 touching each other. In this case, the modules 20 are flush with each other in the longitudinal direction of the coil 8 and are not arranged to be offset from each other.

[0152] Figure 12 shows the embodiment of Figure 6 again, but here the module design is clearly shown, in this case the coil 8 In a system supporting four modules 12 A system is in place.

[0153] Figure 13 shows a side view of Figure 12.

[0154] Figure 14 shows a module 12 in an unloaded state, with a cutout behind it. These modules 12 have a chamber-shaped void region 28. Such a void region 28 is preferably an actual receiving surface. 18 This is a punched-out area located below. Multiple void areas 28 Furthermore, a web-like or truss-like support structure can be provided between them. This makes it possible to further reduce the weight without compromising stability and load-bearing capacity. To achieve this, the punched pieces can be adapted to follow the outer contour as shown on the left, or they can be made into holes or other circular shapes as shown on the right.

[0155] Figures 15 and 16 show other embodiments in which the corrugated cardboard is further stabilized.

[0156] Figure 15 shows the corrugated cardboard module 12 according to the present invention. 、20 This shows a very rough cross-section.

[0157] For example, although not strictly necessary, one layer of cardboard can be used as a receiving surface 18 、24It can be placed on top and function as a softer shock-absorbing layer 29. Below the shock-absorbing layer 29, module 12 、20 A bore 30 is provided that penetrates through. Here, this bore 30 The bore can be oriented radially outward with respect to the radius of the receiving surfaces 18 and 24, or it can extend outward to form an angle with respect to the radial direction. In this example, the bore 30 has a module of 12 、20 It is formed to penetrate completely.

[0158] Preferably, a cylindrical or hollow cylindrical element 31, such as a pipe or sleeve, is installed inside the bore 30.

[0159] This element 31 can be made of metal, plastic, or corrugated cardboard. Preferably, this element 31 is installed in the bore 30 by a positive fit or a slight interference fit.

[0160] This element 31 can be formed to completely penetrate the bore 30, and also module 12 、20 It may also have an end that is flush with the corresponding surface. However, in the region of the receiving surfaces 18 and 24, element 31 is module 12 、20 To maintain a safe distance so that the coil 8 does not dent even if it deforms, the receiving surface 18 is supported by the gap 32. 、24 It is slightly indented and can be separated from it.

[0161] Here, element 31 is a plurality of first modules 12 、20 For example, it can extend to pass through the lateral spacing module 25 (Figure 16), thereby connecting them and applying force to both modules 12. 20、 25, and from there, the load is transferred to the bottom wall of the container or to the load-bearing beams of the entire transport configuration. 16 coil 8 The introduction of forces is further improved, ensuring the distribution of corresponding forces, and in particular, avoiding point loads and excessive axial loads.

[0162] In connection with this, multiple bores 30 and multiple elements 31 can also be distributed around the periphery of the receiving surfaces 18 and 24.

[0163] In particular, if element 31 is made of corrugated cardboard or in the form of a corrugated cardboard sleeve, there is the advantage that the transportation concept of being made from a single recyclable material is realized.

[0164] To provide even stronger protection against the effects of moisture, especially in harsher climatic conditions such as tropical regions, the edges of the corrugated cardboard, which are open by corresponding cutouts, can be covered with kraft liner paper. In extreme cases, a water-repellent layer such as silicone paper can also be used.

[0165] One of the advantages of the present invention is a load-bearing transport and storage system that uses sustainable raw materials, has high load-bearing capacity, and is gentle on the stored items. 7 The ability to create.

Claims

1. A system for transporting and storing metal coils, The aforementioned transport and storage system receives cylindrical plate-shaped metal coils, particularly oriented horizontally. It includes at least one module, the module being formed from a laminate of corrugated cardboard, The corrugated cardboard layer liners (1, 4, 6) are oriented to extend substantially perpendicularly to the receiving surfaces (18, 24) of the modules (12, 20). The receiving surface (18) of the module (12) extends along a curve corresponding to a flat, concave, or elliptical shape and is configured to make strip-like or full-surface contact with a portion of the peripheral wall (11) of the coil (8). Transportation and storage systems.

2. One or more of the modules (12, 20) are configured to extend over a length greater than 20% of the total coil width, particularly greater than 30%, and preferably greater than 40%. The transport and storage system according to claim 1.

3. Modules (12, 20) of similar shape are arranged so as to face each other symmetrically on both sides of the metal coil (8) with respect to a vertical plane passing through the vertical axis of the metal coil. The transport and storage system according to claim 1 or 2.

4. The receiving surfaces (24) of one or more of the modules (20), and optionally additional modules, form two-point or three-point support for the coil (8). A transport and storage system according to any one of claims 1 to 3.

5. The module 20 has a cutout region which is a region with a triangular cross-section. This triangular-shaped cutout opening faces upwards and is wider than the diameter of the coil. The transport and storage system according to claim 4.

6. At least two of the above modules are formed, and these modules are configured such that the cross-section is triangular, in particular a right-angled triangular shape in which the legs form right angles to each other. The transport and storage system according to claim 4 or 5.

7. The modules (12, 20) are configured with a triangular cross-section, each module extending over only a portion of the length of the metal coil (8), and the base walls (24) of the modules are offset from each other so that the broad sides (26) of the modules are in partial contact with each other. A transport and storage system according to any one of claims 4 to 6.

8. The corners of the triangular-shaped modules (20) are each trimmed, and opposing triangular-shaped modules (20) are arranged so that their vertical planes (27) are in contact with each other. A transport and storage system according to any one of claims 4 to 7.

9. The module (12) is configured in a right-angled triangular shape in cross-section, where the legs (13, 14) form a right angle with each other. A transport and storage system according to any one of claims 4 to 8.

10. At least one cylindrical element (31) extends away from the receiving surface (18, 24) through the module (12, 20, 25) and / or adjacent module (12, 20, 25) toward the outer surface of the module (12, 20, 25) and / or adjacent module (12, 20, 25). A transport and storage system according to any one of claims 1 to 9.

11. The at least one cylindrical element (31) is installed inside the bore (30) by a positive fit or an interfering fit. A transport and storage system according to any one of claims 1 to 10.

12. The bore (30) is formed radially outward with respect to the radius of the receiving surface (18, 24), or is formed outward at an angle with respect to the radial direction. A transport and storage system according to any one of claims 1 to 11.

13. The cylindrical element (31) is configured as a solid cylinder or a hollow cylinder. A transport and storage system according to any one of claims 1 to 12.

14. The cylindrical element (31) is made of metal, plastic, or corrugated cardboard. A transport and storage system according to any one of claims 1 to 13.

15. The cylindrical element (31) extends through the bore (30) and has an end that fits into a corresponding face of one module (12, 20) or a plurality of modules (12, 20), or the cylindrical element (31) is recessed by 1 to 100 mm, particularly 2 to 50 mm, preferably 2 to 20 mm, in the region of the receiving surface (18, 24) and is spaced apart from the receiving surface (18, 24) by a gap (32). A transport and storage system according to any one of claims 1 to 14.

16. The cylindrical element (31) is in contact with the bottom wall of the container, or with the load-bearing beams or rails of the entire transport configuration. A transport and storage system according to any one of claims 1 to 15.

17. Multiple bores (30) and multiple cylindrical elements (31) distributed around the circumference of the receiving surface (18, 24) extend through the module (12, 20) and / or the multiple modules (12, 20, 25). A transport and storage system according to any one of claims 1 to 16.

18. The corrugated cardboard, or the laminate of the corrugated cardboard, or the corrugated cardboard and laminate formed by the corrugated cardboard and the laminate are bonded to each other in a manner that makes them water-resistant. A transport and storage system according to any one of claims 1 to 17.

19. The material of the liner (1, 4, 6) of the corrugated cardboard is kraft liner, and / or the corrugated web (2, 5) of the corrugated cardboard is made of semi-chemical pulp or synthetic paper. A transport and storage system according to any one of claims 1 to 18.

20. The module (12, 20) has at least one chamber-shaped void region (28). A transport and storage system according to any one of claims 1 to 19.

21. The module (12, 20) has a plurality of void regions, and a web-like or truss-like support structure is formed between the void regions. A transport and storage system according to any one of claims 1 to 20.

22. The liners (1, 4, 6) and the corrugated layer are bonded together in such a way that they have moisture resistance, and especially water resistance. A transport and storage system according to any one of claims 1 to 21.

23. The corrugated cardboard layers are bonded together across their entire surface using the liners (1, 3, 6) to form a corrugated cardboard laminate, thereby forming a composite or laminate containing at least two flutes, particularly a number of flutes greater than three, preferably a number of flutes greater than ten, and more preferably a number of flutes greater than twenty. A transport and storage system according to any one of claims 1 to 22.

24. The paper material forming the corrugated cardboard is equipped or bonded to have moisture resistance and / or fungal resistance. A transport and storage system according to any one of claims 1 to 23.

25. To adjust the spacing between the modules (12, 20), particularly the spacing from the container wall (15), a slender rectangular module (25) is placed between the leg (22) and the container wall (15). A transport and storage system according to any one of claims 1 to 24.

26. The modules (12, 20) are configured with a triangular cross-section, each module extending over only a portion of the length of the metal coil (8), and the base walls (24) of the modules are offset from each other so that the broad sides (26) of the modules are in partial contact with each other. A transport and storage system according to any one of claims 1 to 25.

27. The module (12) is configured such that its cross-section is a right-angled triangular shape, with its leg portions (13, 14) forming a right angle with each other. A transport and storage system according to any one of claims 1 to 26.

28. The module (12) is directly or indirectly supported by the container wall (15) by a flat, vertical first leg (13), and the module (12) stands directly or indirectly on the container floor (16) by a leg (14) that extends perpendicularly to the first leg (13). The module (12) is provided with a triangular slanted side (17) that corresponds to a recessed or elliptically curved cylindrical sector, which is formed to be in contact with the peripheral wall (11) of the metal coil (8). The radius of the receiving surface (18) is the same as the outer radius of the metal coil, or the elliptical curvature of the receiving surface (18) is such that the deviation from the outer radius of the metal coil (8) is up to 50 mm, and especially up to 10 mm. A transport and storage system according to any one of claims 1 to 27.

29. When the receiving surface (18) is curved in an elliptical shape, the gap between the receiving surface (18) and the peripheral wall (11) of the metal coil is filled with a wedge-shaped fitting piece (33) or a reusable rubber element, particularly an anti-slip mat (33), one side of which conforms to the elliptical surface and the other side which conforms to the coil radius. A transport and storage system according to any one of claims 1 to 28.

30. The modules (12) are spaced apart from each other in the longitudinal central region (19) of the metal coil (8), and are particularly spaced apart by 1 mm to 100 mm, preferably 5 mm to 50 mm. Each receiving surface (18) supports a portion of the circumference of the peripheral wall (11) of the metal coil, and the height (H) of the module (12) is selected to support more than one-third, particularly half, of the diameter of the metal coil. A transport and storage system according to any one of claims 1 to 29.

31. The pieces (19) cut out from the modules (12, 20) are arranged to secure the cargo and to separate the modules (12) or metal coils (8) from each other. A transport and storage system according to any one of claims 1 to 30.

32. A transport and storage system according to any one of claims 1 to 31 for transporting metal coils by train, truck or sea transport, or for storing metal coils in a building.

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