Roll assembly, manufacturing method of roll assembly, storage and transportation method of roll assembly, and package

Abstract

To provide a roll assembly in which deformation of a roll body is prevented.SOLUTION: A roll assembly (1) includes: a roll body (11) which has a core material (14) and a sheet material (15) with a functional layer wound therearound; a package (12) that covers the outer circumferential surface of the roll body (11); and a binding band (13) that is attached to the outer circumference of the package (12) and holds the package (12) on the outer circumferential surface of the roll body (11). The package (12) is formed from a cylindrical body (20). The cylindrical body (20) is cut along at least one cutting line (22) that connects one end (23) and the other end (24) in the axial direction to form at least a pair of one circumferential end and the other circumferential end separated by the at least one cutting line (22), and while held on the outer circumferential surface of the roll body (11), one and the other circumferential ends do not align with each other in the circumferential direction on the outer circumferential surface of the roll body (11) and partially overlap each other to form the package(12).SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a roll assembly including a roll body around which a sheet material is wound, a method for manufacturing the roll assembly, and a method for storage and transportation. The present invention also relates to a packaging body that is disposed around the roll body and retains the shape of the roll body.

Background Art

[0002] Wide sheet products used for applications such as waterproofing, soundproofing, and vibration isolation are provided with a functional layer containing an adhesive or an adhesive on one or both sides of a base material layer, and are usually provided in the form of a roll body in which a wide sheet material is wound around the periphery of an elongated cylindrical core material.

[0003] The thickness of the sheet material, particularly the thickness of the functional layer, varies depending on the application of the sheet product and the like. For example, in the case of a thick sheet material, the thickness of the soft functional layer can reach several millimeters. Therefore, when a roll body in which the sheet material is wound around a cylindrical core material multiple times and laminated is placed directly on the floor so that the central axis of the cylindrical core material is substantially parallel to the floor surface, due to the weight of the roll body itself, the portion of the roll body in contact with the floor surface gradually deforms from the original cylindrical surface into a straight plane along the floor surface due to the reaction force received from the floor surface. In order to prevent such deformation, for example, as described in Patent Document 1, a method of suspending the roll in the air by supporting both ends of the core material has been proposed.

[0004] However, although no external force acts on the roll body suspended in the air, due to the weight of the wound and laminated tape (sheet) itself, the thickness of the part of the wound and laminated roll body located above the core material is small, and the thickness of the part of the wound and laminated roll body located below the core material becomes large, causing the cross-section of the roll body to gradually deform into an ellipse that is vertically long and horizontally short. This tendency becomes more prominent as the thickness of the functional layer is greater, the softer the hardness of the functional layer, and the larger the outer diameter of the roll body. Furthermore, the weaker the tension for winding the sheet material around the core material, the more prominent the above deformation becomes. As a result, the force required to unwind the sheet material from the roll body fluctuates periodically, hindering the processing and operations in the next process. Also, periodic lifting occurs on the sheet material laid on the floor or the like, deteriorating its quality characteristics. Specifically, for example, such problems are likely to occur in a roll body of an adhesive tape (sheet) having an adhesive layer containing butyl rubber or natural rubber as a functional layer.

[0005] Regarding the method of packing a tape roll, for example, Patent Document 2 aims to reduce the types of packing materials for a tape roll obtained by slitting a wide processed roll into, for example, widths of 10 to 120 mm, shorten the packing time, prevent damage by the claws of a forklift during reloading of the packed goods at a consolidation base or relay base during transportation, and reduce the transportation cost of a cargo truck by folding the packing materials into a small volume for return after use of the tape roll, and to provide a packing method that can be recovered and reused multiple times. A method of packing a tape roll is disclosed in which a plurality of tape rolls are vertically stacked on a pallet, the concave surfaces of two half-cylindrical bodies are butted against each other with their ends facing each other on the outside, the outside of the butted cylindrical body is tied with a wire or string or fixed by attaching an adhesive tape, and the cylindrical body is further fixed to the pallet with a wire or string or the like.

[0006] However, Patent Document 2 does not address the problem of suppressing the phenomenon that the cross-section of a roll body formed by winding a sheet material having a functional layer multiple times around a cylindrical core material gradually deforms into an elliptical shape when the roll body is placed directly on the floor or suspended in the air such that the central axis of the cylindrical core material is substantially parallel to the floor surface.

Prior Art Documents

Patent Documents

[0007]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0008] Therefore, the present invention aims to provide a technique for preventing the deformation of the roll body described above.

Means for Solving the Problems

[0009] The first technique to be provided relates to a roll assembly.

[0010] For example, the first form of the roll assembly is a roll body (11) having a core material (14) and a sheet material (15) wound around the outer periphery of the core material (14), a packaging body (12) covering the outer peripheral surface of the roll body (11), and a binding band (13) attached to the outer periphery of the packaging body (12) for holding the packaging body (12) on the outer peripheral surface of the roll body (11), wherein the roll body (11) is arranged such that the central axis of the core material (14) is substantially parallel to the floor surface, the sheet material (15) has at least a functional layer, the packaging body (12) is formed from a cylindrical body (20), The cylindrical body (20) is cut along at least one cutting line (22) that connects one axial end (23) and the other end (24) of the cylindrical body (20) in the axial direction of the cylindrical body (20), so that at least a pair of circumferential one - ends and circumferential other - ends separated by the at least one cutting line (22) are formed. With the cylindrical body (20) held on the outer peripheral surface of the roll body (11), the at least a pair of circumferential one - ends and circumferential other - ends are circumferentially displaced from each other on the outer peripheral surface of the roll body (11) and are partially overlapped to form the package (12).

[0011] A second form of the roll assembly is The at least one cutting line (22) includes a first cutting line and a second cutting line that are located at positions facing each other across the central axis (21) of the cylindrical body (20). The at least a pair of circumferential one - ends and circumferential other - ends include a first circumferential one - end (31) and a first circumferential other - end (32) separated by the first cutting line, and a second circumferential one - end (34) and a second circumferential other - end (33) separated by the second cutting line. The first circumferential one - end (31) and the first circumferential other - end (32) are rotatably connected to each other. The second circumferential one - end (34) and the second circumferential other - end (33) are circumferentially displaced from each other on the outer peripheral surface of the roll body (11) and form an overlapping portion (37A) that is partially overlapped, which is the roll assembly (1) of the first form.

[0012] A third form of the roll assembly is The at least one cutting line (22) includes a first cutting line and a second cutting line that are located at positions facing each other across the central axis (21) of the cylindrical body (20). The at least a pair of circumferential one - ends and circumferential other - ends include a first circumferential one - end (31) and a first circumferential other - end (32) separated by the first cutting line, and a second circumferential one - end (34) and a second circumferential other - end (33) separated by the second cutting line. The first circumferential one end portion (31) and the first circumferential other end portion (32) are circumferentially shifted from each other on the outer peripheral surface of the roll body (11) to form a first overlapping portion (37B) that is partially overlapped. The second circumferential one end portion (34) and the second circumferential other end portion (33) are circumferentially shifted from each other on the outer peripheral surface of the roll body (11) to form a second overlapping portion (37A) that is partially overlapped, the roll assembly (1) of the first form.

[0013] A fourth form of the roll assembly is The packaging body (12) has a first cylindrical body half portion (27) and a second cylindrical body half portion (28) that are bisected by a first cutting line and a second cutting line that are located at positions facing each other across the central axis (21) of the cylindrical body (20). The first circumferential one end portion (31) and the first circumferential other end portion (32) that are separated by the first cutting line are rotatably connected to each other, and The second circumferential one end portion (34) and the second circumferential other end portion (33) that are separated by the second cutting line are circumferentially shifted from each other on the outer peripheral surface of the roll body (11) to form an overlapping portion (37A) that is partially overlapped, the roll assembly (1) of the first form.

[0014] A fifth form of the roll assembly is The packaging body (12) has a first cylindrical body half portion (27) and a second cylindrical body half portion (28) that are bisected by a first cutting line and a second cutting line that are located at positions facing each other across the central axis (21) of the cylindrical body (20). The first cylindrical body half (27) and the second cylindrical body half (28) are such that the first circumferential end portion (31) and the first circumferential other end portion (32) separated by the first cutting line are circumferentially displaced from each other on the outer peripheral surface of the roll body (11) and partially overlapped to form a first overlapping portion (37B), and the second circumferential end portion (34) and the second circumferential other end portion (33) separated by the second cutting line are circumferentially displaced from each other on the outer peripheral surface of the roll body (11) and partially overlapped to form a second overlapping portion (37A). The roll assembly (1) of the first form.

[0015] A sixth form of the roll assembly is the roll assembly (1) of any one of the first to fifth forms, wherein the packaging body (12) is made of at least one selected from the group consisting of paper, wood, plastic, and metal.

[0016] A seventh form of the roll assembly is the roll assembly (1) of any one of the first to sixth forms, wherein the thickness of the functional layer is in the range of 0.1 to 3.0 mm.

[0017] An eighth form of the roll assembly is the roll assembly (1) of any one of the first to seventh forms, wherein the Shore A hardness of the functional layer is in the range of 10 to 60.

[0018] A ninth form of the roll assembly is the roll assembly (1) of any one of the first to eighth forms, wherein the functional layer contains an adhesive or a bonding agent.

[0019] A tenth form of the roll assembly is the roll assembly (1) of any one of the first to ninth forms, wherein the adhesive contains butyl rubber or natural rubber.

[0020] The second technology provided relates to a method for manufacturing a roll assembly.

[0021] For example, one form in the method for manufacturing a roll assembly is A method for manufacturing a roll assembly, comprising covering an outer peripheral surface of a roll body (11) in which a strip-shaped sheet material (15) having at least a functional layer is wound around an outer periphery of a core material (14) with a packaging body (12), and providing a binding band (13) around the packaging body (12) to hold the packaging body (12) on the outer peripheral surface of the roll body (11), arranging the roll body (11) such that a central axis of the core material (14) of the roll body (11) is substantially parallel to a floor surface, preparing a cylindrical body (20) that forms the packaging body (12), forming, in the cylindrical body (20), a pair of circumferential-direction one ends and circumferential-direction other ends separated from each other by cutting along a cutting line (22) connecting one end (23) and the other end (24) in the axial direction of the cylindrical body (20) along a direction of a central axis (21) of the cylindrical body (20), holding the cylindrical body (20) on the outer peripheral surface of the roll body (11) in a state where the pair of circumferential-direction one ends and circumferential-direction other ends are circumferentially shifted from each other and partially overlapped on the outer peripheral surface of the roll body (11).

[0022] According to another aspect of the method for manufacturing a roll assembly, a method for manufacturing a roll assembly (1), comprising covering an outer peripheral surface of a roll body (11) in which a strip-shaped sheet material (15) having at least a functional layer is wound around an outer periphery of a core material (14) with a packaging body (12), and providing a binding band (13) around the packaging body (12) to hold the packaging body (12) on the outer peripheral surface of the roll body (11), arranging the roll body (11) such that a central axis of the core material (14) of the roll body (11) is substantially parallel to a floor surface, preparing a cylindrical body (20) that forms the packaging body (12), By cutting the cylindrical body (20) along a first cutting line and a second cutting line that connect one axial end (23) and the other axial end (24) of the cylindrical body (20) in the direction of the central axis (21) of the cylindrical body (20), a first cylindrical body half (27) having a first circumferential end portion (31) and a second circumferential other end portion (33) and a second cylindrical body half (28) having a second circumferential end portion (34) and a first circumferential other end portion (32) are formed. The first circumferential end portion (31) of the first cylindrical body half (27) and the first circumferential other end portion (32) of the second cylindrical body half (28) are rotatably connected. The second circumferential end portion (34) of the second cylindrical body half (28) and the second circumferential other end portion (33) of the first cylindrical body half (27) are circumferentially shifted from each other on the outer peripheral surface of the roll body (11) and are partially overlapped, and the first cylindrical body half (27) and the second cylindrical body half (28) are held on the outer peripheral surface of the roll body (11).

[0023] According to another aspect of the method for manufacturing a roll assembly, A method for manufacturing a roll assembly (1), wherein an outer peripheral surface of a roll body (11) obtained by winding a belt-like sheet material (15) having at least a functional layer around an outer periphery of a core material (14) is covered with a packaging body (12), and a binding band (13) is provided around the packaging body (12) to hold the packaging body (12) on the outer peripheral surface of the roll body (11). The roll body (11) is arranged such that the central axis of the core material (14) of the roll body (11) is substantially parallel to the floor surface. A cylindrical body (20) constituting the packaging body (12) is prepared. By cutting the cylindrical body (20) along a first cutting line and a second cutting line that connect one axial end (23) and the other axial end (24) of the cylindrical body (20) in the direction of the central axis (21) of the cylindrical body (20), a first cylindrical body half (27) having a first circumferential end portion (31) and a second circumferential other end portion (33) and a second cylindrical body half (28) having a second circumferential end portion (34) and a first circumferential other end portion (32) are formed. The first circumferential end portion (31) of the first cylindrical body half (27) and the first circumferential other end portion (32) of the second cylindrical body half (28) are circumferentially displaced from each other on the outer peripheral surface of the roll body (11) and partially overlapped. The second circumferential end portion (34) of the second cylindrical body half (28) and the second circumferential other end portion (33) of the first cylindrical body half (27) are circumferentially displaced from each other on the outer peripheral surface of the roll body (11) and partially overlapped, and the first cylindrical body half (27) and the second cylindrical body half (28) are held on the outer peripheral surface of the roll body (11).

[0024] The third technology provided relates to a method for storing and transporting a roll assembly.

[0025] For example, one form in the method for storing and transporting a roll assembly is a method for storing and transporting a roll assembly (1) in which a sheet material (15) having at least a functional layer wound and laminated around a cylindrical core material (14) is covered with a packaging body (12), the roll body (11) is arranged such that the central axis of the core material (14) of the roll body is substantially parallel to the floor surface, a cylindrical body (20) forming the packaging body (12) is prepared, at least a pair of circumferential end portions and circumferential other end portions separated from each other are formed by providing a cut portion cut along at least one cut line (22) connecting one end (23) and the other end (24) in the axial direction of the cylindrical body (20) along the direction of the central axis (21) of the cylindrical body (20) in the cylindrical body (20), next, the cylindrical body (20) is mounted on the outer peripheral surface of the roll body (11), next, the at least a pair of circumferential end portions and circumferential other end portions of the cylindrical body (20) mounted on the roll body (11) are circumferentially displaced from each other on the outer peripheral surface of the roll body (11) and partially overlapped. Next, provide a single row or multiple rows of binding bands (13) on the outer periphery of the package (20) to hold the cylindrical body (20) on the outer peripheral surface of the roll body (11) to form the roll assembly (1). Next, store and transport the roll assembly (1).

[0026] The fourth technology provided relates to a package constituting a roll assembly.

[0027] For example, one form of the package is covering the outer peripheral surface of a roll body (11) formed by winding a strip-shaped sheet material (15) having at least a functional layer around the outer periphery of a core material (14) with a package (12), providing a binding band (13) around the package (12) to hold the package (12) on the outer peripheral surface of the roll body (11), and arranging the roll body (11) so that the central axis of the core material (14) of the roll body (11) is substantially parallel to the floor surface. The package (12) constituting the roll assembly (1), the package (12) is composed of a cylindrical body (20) having an inner diameter larger than the outer diameter of the roll body (11), the cylindrical body (20) is cut along at least a pair of cutting lines (22) connecting one end (23) and the other end (24) in the axial direction (21) of the cylindrical body (20) along the direction of the central axis (21) of the cylindrical body (20) to form at least a pair of circumferential one ends and circumferential other ends separated from each other, the at least a pair of circumferential one ends and circumferential other ends are circumferentially displaced from each other on the outer peripheral surface of the roll body (11) and partially overlapped.

Advantages of the Invention

[0028] According to the above-described technology, the cylindrical body constituting the package is held on the outer peripheral surface of the roll body with one circumferential end and the other circumferential end overlapped. Therefore, even when the roll assembly is placed upright on the floor or suspended in the air such that the central axis of the core material of the roll body is substantially parallel to the floor surface, there will be no practically problematic deformation in the roll body (particularly, the functional layer constituting the roll body) whose periphery is constrained by the package. Accordingly, such deformation will not appear as a wrinkle or deformation in the sheet fed from the roll body. Also, the force when feeding the sheet from the roll body will not have periodic or intermittent fluctuations, and stable feeding of the sheet will be performed.

Brief Description of the Drawings

[0029]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Best Mode for Carrying Out the Invention

[0030] Hereinafter, with reference to the accompanying drawings, specific embodiments of the roll assembly related to the technology provided by this patent application will be described.

[0031] [Roll Assembly] As shown in FIGS. 1 and 2, the roll assembly 1 includes a roll body 11, a packaging body 12 that covers the outer peripheral surface of the roll body 11, and a binding band 13 that holds the packaging body 12 on the outer peripheral surface of the roll body 11.

[0032] [Roll Body] The roll body 11 has a core material 14 made of an elongated cylindrical body and a strip-shaped sheet material 15 laminated and wound around the outer periphery of the core material 14.

[0033] The dimensions of the roll body 11 are not particularly limited. For example, when a paper tube with an inner diameter of 3 inches is used as the core material 14 and wound, the diameter (outer diameter) of the roll body 11 is 120 to 600 mm, preferably 300 to 600 mm. Also, the axial length of the roll body 11 (the length in the central axis direction of the roll body 11) is, for example, 400 to 1,650 mm, preferably 1,000 to 1,650 mm. The larger the diameter (outer diameter) of the roll body 11, the greater the self-weight of the roll body 11. Therefore, if the roll body 11 is directly placed on the floor or stored in a suspended state, the deformation of the roll body 11 will be large. However, the present invention is particularly useful for preventing such deformation.

[0034] The sheet material 15 has at least a functional layer. Usually, the functional layer is formed on one or both sides of a base material layer. The functional layer is not particularly limited, and examples thereof include a layer containing an adhesive or a bonding agent. As the adhesive, for example, an adhesive containing butyl rubber or natural rubber is preferably used. Also, the material of the base material layer is not limited, and examples thereof include cloths such as cotton, spandex, chemical fiber, non-woven fabric, papers such as Japanese paper, kraft paper, plastics such as cellophane, polyolefin, polyester, polyvinyl chloride, metal foil, or plastic laminate bodies thereof. Specific examples of the sheet material 15 include, for example, an adhesive sheet formed by applying a functional layer (adhesive layer) containing a butyl rubber-based adhesive excellent in waterproofness on one or both sides of a base material layer made of polyethylene net or polyethylene non-woven fabric, and is used for applications such as waterproofing, soundproofing, and vibration damping. In the case of a functional layer containing a butyl rubber-based adhesive, usually, release paper subjected to double-sided release treatment is provided on one surface of the functional layer containing the butyl rubber-based adhesive. Another specific example of the sheet material 15 includes an adhesive sheet formed by applying a functional layer (adhesive layer) containing a natural rubber-based adhesive on both sides of a base material layer made of spandex cloth, and is used for applications such as fixing a carpet to a floor surface and fixing a wire protector to a floor surface. Furthermore, another specific example of the sheet material 15 includes an adhesive sheet formed by applying a functional layer (adhesive layer) containing a natural rubber-based adhesive with polyester yarns embedded in the length direction of the sheet on one side of a base material layer made of polyester, and is used for applications such as fixing packaging and bundling wires, pipes, and heavy objects. Note that the sheet material 15 may take a form that does not include a base material layer, that is, a form consisting only of release paper and a functional layer.

[0035] The Shore A hardness of the functional layer of the sheet material 11 is preferably 10 to 60. The Shore A hardness refers to the value measured in accordance with JIS K 6253 using a Type A durometer (spring-type rubber hardness meter). The Shore A hardness is more preferably 10 to 55, and even more preferably 10 to 50. Since the roll body 11 with the Shore A hardness of the functional layer of the sheet material 11 within the above range is relatively soft, when the roll body 11 is directly placed on the floor or stored in a suspended state, the flow deformation of the roll body 11 becomes large, but the present invention is particularly useful for preventing such deformation.

[0036] Since the thickness of the sheet material 15, particularly the thickness (total thickness) of the functional layer, varies depending on the use of the sheet material 15, it is not particularly limited. For example, it is 0.1 to 3.0 mm, preferably 0.4 to 3.0 mm. The greater the thickness of the functional layer, the larger the outer diameter of the roll body 11 and the greater its self-weight. Therefore, when the roll body 11 is directly placed on the floor or stored in a suspended state, the deformation of the roll body 11 becomes large, but the present invention is particularly useful for preventing such deformation. Also, the width of the sheet material 15 (the length in the central axis direction of the roll body 11) is, for example, 400 to 1,650 mm, preferably 1,000 to 1,650 mm.

[0037] The core material 14 is a cylindrical body made of one or more materials selected from the group consisting of materials such as paper, plastic, and metal. As the core material 14, for example, a paper tube with an inner diameter of 3 inches and a wall thickness of 2.5 to 20 mm is preferably used. The length of the core material 14 in the central axis direction is determined to be larger than the width of the sheet material 15 wound around the outer periphery of the core material 14, and both end portions protrude from both ends of the sheet material 15. Therefore, the roll body 11 can be supported by passing a support rod (not shown) through the core material 14 or by receiving the end portions protruding from both sides of the sheet material 15 with an appropriate support (not shown).

[0038] [Package] As shown in Fig. 3, the package body 12 is made from a cylindrical body 20. The cylindrical body 20 is formed of one or more materials selected from the group consisting of materials such as paper, plastic, and metal. From the viewpoints of economy and handleability, preferably, the cylindrical body 20 is a paper tube made of a paper tube formed by adhering a plurality of layers of sheet base paper such as kraft paper and liner paper, or a paper tube formed by forming a single thick paper material into a cylindrical shape. As the adhesive used when adhering a plurality of layers of sheet base paper to form a paper tube, for example, thermoplastic resins such as polyethylene, atactic polypropylene, ethylene-vinyl acetate copolymer, polyamide, and polyester, or water-soluble resins such as polyvinyl acetate-based emulsion and polyvinyl alcohol are used.

[0039] The tensile strength of the sheet base paper of the paper tube suitably used for the cylindrical body 20 is not particularly limited, but the tensile strength measured in accordance with JIS P8113:2006 is preferably, for example, 4.1 to 24.0 kN / m in the MD (longitudinal) direction and 1.9 to 10.0 kN / m in the CD (transverse) direction. As the paper tube used for the cylindrical body 20, for example, in the state where the roll assembly 1 (see Fig. 1) packed as described below is placed on the floor surface, due to the self-weight of the roll body 11, the portion of the paper tube in contact with the floor surface is not easily crushed, or even in the state of being suspended in the air, a paper tube having a strength such that the cylindrical shape of the paper tube is not easily deformed due to the self-weight and flow deformation of the roll body 11 is selected. The strength of the paper tube mainly depends on the thickness of the paper tube. That is, as the thickness of the paper tube used for the cylindrical body 20, for example, 1 to 20 mm is preferable, and when one pair of circumferential end portions of the cylindrical body 20 are shifted in the circumferential direction from the circumferential other end portion and partially overlapped on the outer peripheral surface of the roll body 11, from the viewpoint of making the gap (step) generated between the vicinity of the circumferential end portion and the roll body 11 as small as possible while maintaining the strength of the paper tube, 3 to 10 mm is more preferable.

[0040] The length of the cylindrical body 20 in the central axis direction is preferably the same as or slightly larger than the length of the roll body 11 in the central axis direction. As shown in FIG. 2, the inner diameter D2 of the cylindrical body 20 is preferably, for example, 0.5 to 5.0 cm larger than the outer diameter D1 of the roll body 11. The size (length, inner diameter, thickness) of the cylindrical body 20 is appropriately determined according to the size (length, outer diameter) and weight of the roll body 11.

[0041] To form the package 12 from the cylindrical body 20, for example, as shown in FIG. 3, along two lines (cutting lines) 22 that are axially symmetric with respect to the central axis 21 of the cylindrical body 20, cut portions 25, 26 that connect one axial end 23 and the other end 24 of the cylindrical body 20 are formed on the cylindrical body 20, and two cylindrical body halves 27, 28 are formed. In this case, the two cylindrical body halves 27, 28 have the same size, but the cut portions 25, 26 may be formed so that the sizes of the two cylindrical body halves 27, 28 are different.

[0042] The two half - cut cylindrical body halves 27, 28 are, for example, as shown in FIG. 4, in a state where the first circumferential end portion 31 of the first cylindrical body half 27 separated by one of the cut portions 25, 26 and the first circumferential other end portion 32 of the second cylindrical body half 28 are butted flush, and the first circumferential end portion 31 of the butted first cylindrical body half 27 and the first circumferential other end portion 32 of the second cylindrical body half 28 are rotatably connected and combined. An adhesive tape 35 can be used as the means for connection. The adhesive tape 35 is provided continuously or intermittently from one axial end 23 to the other end 24 (see FIG. 3) of the cylindrical body 20. A buckle can also be used as other connecting means. It is preferable to provide a plurality of buckles at regular intervals in the axial direction of the cylindrical body 20.

[0043] [Binding band] For the tying band 13, a PET band made of, for example, polyethylene terephthalate or a PP band made of polypropylene can be used. For tightening the tying band 13, a tying machine (not shown) can be used. Depending on the tying machine used, it may be necessary to insert a part of the tying machine between the package 12 and the tying band 13. In that case, for example, as shown in FIG. 1, in order to form a gap 29 between the package 12 and the tying band 13, it is preferable to provide a spacer 30 having an appropriate size and shape between the package 12 and the tying band 13.

[0044] [Spacer] The spacer 30 is not particularly limited, but specifically, for example, an L-shaped paper tube (angle) is preferably used. The thickness of the L-shaped paper tube is, for example, 2 to 5 mm. Also, the width of the L-shaped paper tube is, for example, 50×50 mm to 100×100 mm. By using the L-shaped paper tube, a part of the tying machine can be easily inserted between the package 12 and the tying band 13, and the operations of tightening, binding, and cutting the tying band 13 become easy. Furthermore, the length of the L-shaped paper tube is not particularly limited, but in order to minimize the gap 38 (see FIG. 6(a)) generated between the peripheral edge of the overlapping portion of one circumferential end and the other circumferential end of the cylindrical body 20 and the surface of the roll body 11 as much as possible, it is preferable that the length of the L-shaped paper tube is substantially the same as the axial length of the cylindrical body 20 in order to surely maintain the tied state tightened by the tying band 13. Then, the inward tightening force of the tying band 13 becomes uniform in the axial direction of the cylindrical body 20, the above-mentioned tied state can be surely maintained during storage and transportation, and the deformation of the roll body 11 during storage and transportation can be surely reduced. The arrangement of the spacer 30 is not particularly limited, but it is preferably arranged so as to cover the overlapping portion of one circumferential end and the other circumferential end of the cylindrical body 20.

[0045] [Assembly of Roll Assembly] The following is an example of a method for assembling the roll assembly 1, but it is not particularly limited thereto as long as the effects of the present invention are not impaired. When assembling the roll assembly 1, for example, two cylindrical body halves 27, 28 of the cylindrical body 20 shown in FIG. 4 are opened with the connecting portion 36 (the portion where the first circumferential end portion 31 of the first cylindrical body half 27 and the first circumferential other end portion 32 of the second cylindrical body half 28 face each other) as a fulcrum.

[0046] Next, the roll body 11 is accommodated inside one of the two opened cylindrical body halves 27, 28, i.e., inside the cylindrical body half 27.

[0047] Next, the other cylindrical body half 28 is closed. At this time, since the inner diameter of the cylindrical body 20 is larger than the outer diameter of the roll body 11 as described above, there is a gap between the inner surfaces of the two closed cylindrical body halves 27, 28 and the accommodated roll body 11.

[0048] Next, the binding band 13 is arranged around the cylindrical body 20, and the cylindrical body 20 is tightened inward from its periphery by a binding machine. At this time, if necessary, a spacer 30 such as an L-shaped paper tube is provided on the outer periphery of the cylindrical body 20 to form a gap 29 between the cylindrical body 20 and the binding band 13, and a part of the binding machine is inserted therein.

[0049] As shown in FIG. 5, when starting the tightening, on the outer peripheral surface of the roll body 11, the second circumferential end portion 34 of one cylindrical body half 28 is partially overlapped on the second circumferential other end portion 33 of the other cylindrical body half 27 to form an overlapping portion 37A, and from this state, the binding band 13 is tightened by a binding machine. As a result, as the tightening of the binding band 13 progresses, the space formed inside the two cylindrical body halves 27, 28 becomes smaller, and finally the inner surfaces of the two cylindrical body halves 27, 28 are almost completely in close contact with the outer peripheral surface of the roll body 11.

[0050] Finally, the binding machine is removed, the binding operation is completed, and the assembly of the roll assembly 1 is completed.

[0051] According to another method of assembling the roll assembly 1, first, the roll body 11 is suspended in the air by supporting both ends of the core material 14 with supporting members, and the first cylindrical body half 27 and the second cylindrical body half 28 are mounted so as to cover the outer peripheral surface of the roll body 11. Then, the first circumferential end portion 31 of the first cylindrical body half 27 and the first circumferential other end portion 32 of the second cylindrical body half 28 are butted flush with each other and rotatably connected with an adhesive tape 35 to form a connecting portion 36. Next, in the same manner as the method described above, the binding band 13 is disposed around the cylindrical body 20, and the cylindrical body 20 is tightened inward from its periphery by a binding machine, and the binding operation is completed, thereby completing the assembly of the roll assembly 1.

[0052] The roll assembly 1 thus packaged is stored and transported in a state of being directly placed on the floor surface or a pallet or the like, or in a state of passing a rod-shaped rod through the core material, or in a state of supporting both ends of the core material with supporting members. During transportation, it is preferable that the roll assembly 1 is stored and transported in a suspended state with both ends of the core material 14 supported by supporting members and housed in a packaging box such as a cardboard box.

[0053] [Other forms] As shown in FIG. 4, when the cylindrical body 20 is cut along its radial direction, the second circumferential other end portion 33 of the cylindrical body half 27 and the second circumferential one end portion 34 of the cylindrical body half 28 at the cutting portion 26 have a substantially square cross section with a corner of about 90 degrees. Therefore, when the second circumferential one end portion 34 of one cylindrical body half 28 is overlapped with the second circumferential other end portion 33 of the other cylindrical body half 27, as shown in FIG. 6(a), a gap 38 is generated between the vicinity of the second circumferential one end portion 34 of the cylindrical body half 28 and the roll body 11. The size of the gap 38 increases correspondingly as the thickness of the cylindrical body 20 increases, and a part of the roll body 11 tightened from the periphery may escape into the gap 38, which may cause a slight deformation of the roll body 11. Therefore, as shown in FIG. 6(b), it is preferable that the second circumferential other end portion 33 of the one cylindrical body half 27 located below in the overlapped state has its outer surface shaved and processed into an inclined surface 39 so that the inner surface of the cylindrical body 20 is completely or almost completely in close contact with the roll body 11.

[0054] In addition, when a gap 38 is formed between the vicinity of the second circumferential end portion 34 of the cylindrical body half 28 and the roll body 11, it is preferable to adjust so that the portion of this gap 38 is arranged near the top portion of the roll body 11. By doing so, compared with the roll assembly 1 in which the portion of the gap 38 is arranged below the roll body 11, the deformation of the roll body 11 due to gravity is suppressed, and the deformation near the gap 38 can be reduced.

[0055] In the above-described embodiment, the two divided cylindrical body halves 27 and 28 are rotatably connected at one end thereof. However, as shown in FIG. 7, the lower half of the roll body 11 may be accommodated inside one cylindrical body half 27, and the upper half of the roll body 11 exposed from one cylindrical body half 27 may be covered with the other cylindrical body half 28. In this case, for example, the first circumferential other end portion 32 and the second circumferential one end portion 34 of the other cylindrical body half 28 are respectively overlapped on the first circumferential one end portion 31 and the second circumferential other end portion 33 of one cylindrical body half 27, and overlapping portions 37B and 37A are respectively formed on the left and right of the roll body 11.

[0056] [Comparison] When the roll assembly 1 of the present invention described above is placed on the floor surface so that the central axis of the core material 14 of the roll body 11 is substantially parallel to the floor surface, the portion in contact with the floor surface of the package 12 is not crushed even when the self-weight of the roll body 11 is applied, and the deformation amount of the diameter of the package 12 can be significantly reduced. Further, even when the roll assembly 1 is suspended in the air so that the central axis of the core material 14 of the roll body 11 is substantially parallel to the floor surface, the cylindrical shape of the paper tube is not easily deformed even when the self-weight and the force of fluid deformation of the roll body 11 are applied. As a result, the deformation of the roll body 11 can be kept below the target value (for example, when the outer diameter of the roll body 11 is 120 mm or more and less than 300 mm, the maximum deformation rate in the self-weight direction of the cross-sectional outer diameter is ± 4% or less). Further, even when the roll assembly 1 is suspended in the air so that the central axis of the core material 14 of the roll body 11 is substantially parallel to the floor surface, the deformation of the roll body 11 is kept below the target value (for example, when the outer diameter of the roll body 11 is 300 mm or more and 600 mm or less, the maximum deformation rate in the self-weight direction of the cross-sectional outer diameter is ± 6% or less).

[0057] For example, specifically, as the roll body 11, an adhesive tape having a butyl rubber-based adhesive layer (total thickness: 0.45 mm, Shore A hardness: 50) provided on both sides of a non-woven fabric base material was wound around a paper tube (core material 14, wall thickness: 3 mm) with an inner diameter of 77.4 mm to form a roll body A (width: 1250 mm, outer diameter: 150 mm). When the roll assembly 1 was assembled by the cylindrical body half 27 and the cylindrical body half 28 shown in FIG. 5 and the roll body A was placed on the floor surface such that the central axis of the core material 14 of the roll body A was substantially parallel to the floor surface, even after being stored at room temperature for 14 days, the maximum deformation rate in the self-weight direction of the cross-sectional outer diameter was 2.9%.

[0058] Also, as the roll body 11, an adhesive tape having a butyl rubber-based adhesive layer (total thickness: 0.40 mm, Shore A hardness: 50) provided on both sides of a non-woven fabric base material was wound around a paper tube (core material 14, wall thickness: 20 mm) with an inner diameter of 77.4 mm to form a roll body B (width: 1050 mm, outer diameter: 550 mm). When the roll assembly 1 was assembled by the cylindrical body half 27 (paper tube thickness: 3 mm) and the cylindrical body half 28 (paper tube thickness: 3 mm) shown in FIG. 5 and the roll body B was suspended in the air such that the central axis of the core material 14 of the roll body B was substantially parallel to the floor surface, even after being stored at room temperature for one month, the maximum deformation rate in the self-weight direction of the cross-sectional outer diameter was 5.6%. Further, when the paper tube thickness used for the cylindrical body half 27 and the cylindrical body half 28 was changed from 3 mm to 5 mm and the roll body B was suspended in the air in the same manner as above, even after being stored at room temperature for one month, the maximum deformation rate in the self-weight direction of the cross-sectional outer diameter was 4.5%.

[0059] In contrast, as shown in FIGS. 8(a) and 8(b), when the roll body 41 is placed directly on the floor surface 42 such that the central axis of the roll body 41 is substantially parallel to the floor surface 42, the roll body 41 deforms such that the portion in contact with the floor surface 42 follows the floor surface 42, and the whole deforms into a tunnel cross-sectional shape 41'. For example, specifically, as the roll body 41, an adhesive tape having a butyl rubber-based adhesive layer (total thickness: 0.45 mm, Shore A hardness: 50) provided on both sides of a non-woven fabric base material is wound around a paper tube (core material 14, wall thickness: 3 mm) with an inner diameter of 77.4 mm to form a roll body A (width: 1250 mm, outer diameter: 150 mm). When the roll body A is placed directly on the floor surface 42 without using the package 12 of the present invention such that the central axis of the core material 14 of the roll body A is substantially parallel to the floor surface 42, the maximum deformation rate in the self-weight direction of the cross-sectional outer diameter after storage at room temperature for 14 days was 5.4%.

[0060] Also, as shown in FIGS. 9(a) and 9(b), when the roll body 43 is suspended in the air such that the central axis of the roll body 43 is substantially parallel to the floor surface 42, the roll body 43 deforms into an ellipse 43' that is long in the direction of gravity. For example, specifically, as the roll body 43, an adhesive tape having a butyl rubber-based adhesive layer (total thickness: 0.40 mm, Shore A hardness: 50) provided on both sides of a non-woven fabric base material is wound around a paper tube (core material 14, wall thickness: 20 mm) with an inner diameter of 77.4 mm to form a roll body B (width: 1050 mm, outer diameter: 550 mm). When the roll body B is suspended in the air without using the package 12 of the present invention such that the central axis of the core material 14 of the roll body B is substantially parallel to the floor surface 42, the maximum deformation rate in the self-weight direction of the cross-sectional outer diameter after storage at room temperature for 1 month was 15.4%.

[0061] Furthermore, as shown in FIGS. 10(a) and 10(b), when the roll body 44 is placed on the floor surface 46 such that the lower half of the roll body 44 is accommodated in the cylindrical body half 45 and the central axis of the roll body 44 is substantially parallel to the floor surface 46, the roll body 44 spreads to the left and right, causing a "sag" on both ends 47 of the cylindrical body half 45, or the roll body 44 deforms to fill the left and right gaps with the cylindrical body half 45.

[0062] Furthermore, as shown in FIGS. 11(a) and 11(b), a roll body 51 is accommodated in a package 49 having an opening 50 formed in its upper end portion, and a roll assembly 52 in which the deformation is restrained by a binding band (not shown) is suspended in the air such that the central axis of the roll body 51 is substantially parallel to the floor surface. Then, the roll body 51 deforms such that its upper end portion 53 escapes into the opening 50.

[0063] Such deformation of the roll body becomes larger as the temperature of the environment rises. For example, when the roll assembly is loaded into a container for transportation, during the high temperature in summer, the plasticity of the adhesive or bonding agent of the functional layer increases, that is, the hardness of the adhesive or bonding agent decreases, and accordingly the deformation of the roll body becomes larger.

[0064] On the other hand, according to the roll assembly of the above-described embodiment of the present invention, even in a high temperature environment, the roll body is restrained from its surroundings and deformation is prevented. Therefore, when the sheet material is drawn out from the roll body taken out of the package, the force required for the drawing does not change periodically, so that stable drawing can be obtained. Further, since there is no deformation of the roll body, when the drawn sheet material is applied to, for example, the floor surface, the sheet material conforms to the floor surface without undulating and can be laid without forming a gap with the floor surface.

Explanation of Reference Numerals

[0065] 1: Roll assembly, 11: Roll body, 12: Package, 13: Binding band, 14: Core material, 15: Sheet material, 20: Cylindrical body, 21: Central axis, 22: Cutting line, 27, 28: Half cylindrical bodies, 31: First circumferential direction one end portion, 32: First circumferential direction other end portion, 33: Second circumferential direction other end portion, 34: Second circumferential direction one end portion, 35: Adhesive tape, 36: Connecting part, 37A, 37B: Overlapping part. 41, 43, 44, 51: Roll body, 41’, 43’: Deformed roll body, 42, 44: Floor surface, 45: Half of the cylindrical body, 47: Both ends of the half cylindrical body 45, 49: Packaged body, 50: Opening, 52: Roll assembly, 53: Upper end portion of the roll body 51.

Claims

1. A roll body (11) having a core material (14) and a sheet material (15) wound around the outer periphery of the core material (14), A packaging body (12) covering the outer peripheral surface of the roll body (11), A binding band (13) attached to the outer periphery of the packaging body (12) to hold the packaging body (12) on the outer peripheral surface of the roll body (11), The roll body (11) is arranged such that the central axis of the core material (14) is substantially parallel to the floor surface, The sheet material (15) has at least a functional layer, The packaging body (12) is formed from a cylindrical body (20), The cylindrical body (20) is cut along at least one cutting line (22) connecting one end (23) and the other end (24) in the axial direction of the cylindrical body (20), so that at least a pair of circumferential one - ends and circumferential other - ends separated by the at least one cutting line (22) are formed, The roll assembly (1), wherein in a state where the cylindrical body (20) is held on the outer peripheral surface of the roll body (11), the at least a pair of circumferential one - ends and circumferential other - ends are circumferentially shifted from each other on the outer peripheral surface of the roll body (11) and are partially overlapped to constitute the packaging body (12).

2. The at least one cutting line (22) includes a first cutting line and a second cutting line located at positions facing each other across the central axis (21) of the cylindrical body (20), The at least a pair of circumferential one - ends and circumferential other - ends include a first circumferential one - end (31) and a first circumferential other - end (32) separated by the first cutting line, and a second circumferential one - end (34) and a second circumferential other - end (33) separated by the second cutting line, The first circumferential one - end (31) and the first circumferential other - end (32) are rotatably connected to each other, The roll assembly (1) according to Claim 1, wherein the second circumferential one - end (34) and the second circumferential other - end (33) are circumferentially shifted from each other on the outer peripheral surface of the roll body (11) and form an overlapping portion (37A) where they are overlapped.

3. The at least one cutting line (22) includes a first cutting line and a second cutting line located at positions facing each other across the central axis (21) of the cylindrical body (20), The at least one pair of circumferential one ends and circumferential other ends include a first circumferential one end (31) and a first circumferential other end (32) separated by the first cutting line, and a second circumferential one end (34) and a second circumferential other end (33) separated by the second cutting line. The first circumferential one end (31) and the first circumferential other end (32) are circumferentially displaced from each other on the outer peripheral surface of the roll body (11) to form an overlapped first overlapping portion (37B). The roll assembly (1) according to claim 1, wherein the second circumferential one end (34) and the second circumferential other end (33) are circumferentially displaced from each other on the outer peripheral surface of the roll body (11) to form an overlapped second overlapping portion (37A).

4. The package (12) has a first cylindrical half (27) and a second cylindrical half (28) which are bisected by a first cutting line and a second cutting line at positions facing each other across the central axis (21) of the cylindrical body (20). The roll assembly (1) according to claim 1, wherein the first circumferential one end (31) and the first circumferential other end (32) separated by the first cutting line are rotatably connected to each other in the first cylindrical half (27), and the second circumferential one end (34) and the second circumferential other end (33) separated by the second cutting line are circumferentially displaced from each other on the outer peripheral surface of the roll body (11) to form an overlapped overlapping portion (37A).

5. The package (12) has a first cylindrical half (27) and a second cylindrical half (28) which are bisected by a first cutting line and a second cutting line at positions facing each other across the central axis (21) of the cylindrical body (20). The roll assembly (1) according to claim 1, wherein the first circumferential one end (31) and the first circumferential other end (32) separated by the first cutting line are circumferentially displaced from each other on the outer peripheral surface of the roll body (11) to form an overlapped first overlapping portion (37B), and the second circumferential one end (34) and the second circumferential other end (33) separated by the second cutting line are circumferentially displaced from each other on the outer peripheral surface of the roll body (11) to form an overlapped second overlapping portion (37A).

6. The roll assembly (1) according to any one of claims 1 to 5, wherein the package (12) is made of at least one selected from the group consisting of paper, wood, plastic, and metal.

7. The roll assembly (1) according to any one of claims 1 to 5, wherein the thickness of the functional layer is in the range of 0.1 to 3.0 mm.

8. The roll assembly (1) according to any one of claims 1 to 5, wherein the Shore A hardness of the functional layer is in the range of 10 to 60.

9. The roll assembly (1) according to claim 7, wherein the Shore A hardness of the functional layer is in the range of 10 to 60.

10. The roll assembly (1) according to any one of claims 1 to 5, wherein the functional layer contains an adhesive or an adhesive agent.

11. The roll assembly (1) according to claim 7, wherein the functional layer contains an adhesive or an adhesive agent.

12. The roll assembly (1) according to claim 8, wherein the functional layer contains an adhesive or an adhesive agent.

13. The roll assembly (1) according to claim 9, wherein the functional layer contains an adhesive or an adhesive agent.

14. The roll assembly according to claim 10, wherein the adhesive contains butyl rubber or natural rubber.

15. The roll assembly according to claim 11, wherein the adhesive contains butyl rubber or natural rubber.

16. The roll assembly according to claim 12, wherein the adhesive contains butyl rubber or natural rubber.

17. The roll assembly according to claim 13, wherein the adhesive contains butyl rubber or natural rubber.

18. A method for manufacturing a roll assembly, comprising covering an outer peripheral surface of a roll body (11) obtained by winding a strip-shaped sheet material (15) having at least a functional layer around an outer periphery of a core material (14) with a package (12), and providing a binding band (13) around the package (12) to hold the package (12) on the outer peripheral surface of the roll body (11), the method comprising: arranging the roll body (11) such that a central axis of the core material (14) of the roll body (11) is substantially parallel to a floor surface; preparing a cylindrical body (20) forming the package (12); cutting the cylindrical body (20) along a cutting line (22) connecting one axial end (23) and the other end (24) of the cylindrical body (20) in a direction of a central axis (21) of the cylindrical body (20) to form a pair of circumferential one ends and circumferential other ends separated from each other; A method for manufacturing a roll assembly (1), wherein the pair of circumferential one ends and circumferential other ends are circumferentially shifted from each other on the outer peripheral surface of the roll body (11) and are partially overlapped, and the cylindrical body (20) is held on the outer peripheral surface of the roll body (11).

19. A method for manufacturing a roll assembly (1), wherein an outer peripheral surface of a roll body (11) obtained by winding a strip-shaped sheet material (15) having at least a functional layer around an outer periphery of a core material (14) is covered with a packaging body (12), and a binding band (13) is provided around the packaging body (12) to hold the packaging body (12) on the outer peripheral surface of the roll body (11), wherein the roll body (11) is arranged such that a central axis of the core material (14) of the roll body (11) is substantially parallel to a floor surface, a cylindrical body (20) forming the packaging body (12) is prepared, by cutting along a first cutting line and a second cutting line connecting one axial end (23) and the other end (24) in the axial direction of the cylindrical body (20) along the direction of the central axis (21) of the cylindrical body (20), a first cylindrical body half (27) having a first circumferential one end (31) and a first circumferential other end (33) and a first cylindrical body half (28) having a second circumferential one end (32) and a second circumferential other end (34) are formed, the first circumferential one end (31) of the first cylindrical body half (27) and the second circumferential one end (32) of the second cylindrical body half (28) are rotatably connected, the first circumferential other end (33) of the first cylindrical body half (27) and the second circumferential other end (34) of the second cylindrical body half (28) are circumferentially shifted from each other on the outer peripheral surface of the roll body (11) and are partially overlapped, and the first cylindrical body half (27) and the second cylindrical body half (28) are held on the outer peripheral surface of the roll body (11). A method for manufacturing a roll assembly (1).

20. A method for manufacturing a roll assembly (1), wherein an outer peripheral surface of a roll body (11) obtained by winding a strip-shaped sheet material (15) having at least a functional layer around an outer periphery of a core material (14) is covered with a packaging body (12), and a binding band (13) is provided around the packaging body (12) to hold the packaging body (12) on the outer peripheral surface of the roll body (11), wherein the roll body (11) is arranged such that a central axis of the core material (14) of the roll body (11) is substantially parallel to a floor surface, a cylindrical body (20) constituting the packaging body (12) is prepared, By cutting along a first cutting line and a second cutting line that connect one axial end (23) and the other end (24) of the cylindrical body (20) in the direction of the central axis (21) of the cylindrical body (20), a first half-cylindrical body (27) having a first circumferential end portion (31) and a first circumferential other end portion (33) and a second half-cylindrical body (28) having a second circumferential end portion (32) and a second circumferential other end portion (34) are formed. The first circumferential end portion (31) of the first half-cylindrical body (27) and the second circumferential end portion (32) of the second half-cylindrical body (28) are axially displaced from each other on the outer peripheral surface of the roll body (11) and partially overlapped. A method for manufacturing a roll assembly (1), in which the first circumferential other end portion (33) of the first half-cylindrical body (27) and the second circumferential other end portion (34) of the second half-cylindrical body (28) are axially displaced from each other on the outer peripheral surface of the roll body (11) and partially overlapped, and the first half-cylindrical body (27) and the second half-cylindrical body (28) are held on the outer peripheral surface of the roll body (11).

21. A method for storing and transporting a roll assembly (1) in which a sheet material (15) having at least a functional layer wound and laminated around a cylindrical core material (14) is covered with a packaging body (12), The roll body (11) is arranged such that the central axis of the core material (14) of the roll body (11) is substantially parallel to the floor surface. A cylindrical body (20) forming the packaging body (12) is prepared. At least one cutting line (22) that connects one axial end (23) and the other end (24) of the cylindrical body (20) in the direction of the central axis (21) of the cylindrical body (20) is provided on the cylindrical body (20), and at least a pair of circumferential end portions and circumferential other end portions separated from each other are formed by providing a cut portion along the cutting line. Next, the cylindrical body (20) is mounted on the outer peripheral surface of the roll body (11). Next, the at least a pair of circumferential end portions and circumferential other end portions of the cylindrical body (20) mounted on the roll body (11) are axially displaced from each other on the outer peripheral surface of the roll body (11) and partially overlapped. Next, one or a plurality of rows of binding bands (13) are provided on the outer periphery of the packaging body (20) to hold the cylindrical body (20) on the outer peripheral surface of the roll body (11) and form the roll assembly (1). Next, a method for storing and transporting the roll assembly (1) for storing and transporting the roll assembly (1).

22. A packaging body (12) covers the outer peripheral surface of a roll body (11) in which a belt-like sheet material (15) having at least a functional layer is wound around the outer periphery of a core material (14). A binding band (13) is provided around the packaging body (12) to hold the packaging body (12) on the outer peripheral surface of the roll body (11). The roll body (11) is arranged such that the central axis of the core material (14) of the roll body (11) is substantially parallel to the floor surface. A packaging body (12) constituting the roll assembly (1), wherein the packaging body (12) is formed of a cylindrical body (20) having an inner diameter larger than the outer diameter of the roll body (11), the cylindrical body (20) is cut along at least one cutting line (22) connecting one end (23) and the other end (24) in the axial direction (21) of the cylindrical body (20) along the direction of the central axis (21) of the cylindrical body (20), and at least one circumferential-direction one end portion and circumferential-direction other end portion separated from each other are formed, the at least one pair of circumferential-direction one end portion and circumferential-direction other end portion are circumferentially displaced from each other on the outer peripheral surface of the roll body (11) and partially overlapped, the packaging body (12).

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