Roll material, packaging method, and bonding structure

Abstract

To ensure the quality of roll materials.SOLUTION: A roll material for packaging according to the present invention, in which a strip-shaped sheet of paper material 12 is wound into a roll and a sealing material is partially pre-laminated on the paper material 12, is provided with a first addition portion 14a that is continuously provided in a roll circumferential direction D1 along one end edge S1 of the paper material 12 in a roll axis direction D2, and adds thickness in the roll radial direction of the paper material 12 by a one-end sealing material, which is at least a part of the sealing material pre-laminated in the thickness direction on the paper material 12, and a second addition portion 15a that is continuously provided in the roll circumferential direction D1 along the other end edge S2 of the paper material 12 in the roll axis direction D2, and adds thickness in the roll radial direction of the paper material 12 by the laminated material that has been pre-laminated in the thickness direction on the paper material 12.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a roll material for packaging in which a sealing material is preliminarily laminated on a paper material wound in a roll shape in part.

Background Art

[0002] As one of packaging materials, a material in which a sealing material is preliminarily laminated on a paper material is known. For example, as shown in FIG. 12, a roll material 1 is known in which a paper material 2 extending in a strip shape is wound in a roll shape, and a sealing material such as an adhesive or a pressure-sensitive adhesive is preliminarily laminated on this paper material (see Patent Documents 1 and 2). Further, as shown in FIG. 13, as an arrangement of the sealing material 4 laminated on the paper material 2A, a pattern is known in which the sealing material 4 is continuously provided at the edge S1 on one side in the strip width direction, but is not provided at the edge S2 on the other side in the strip width direction (see Patent Document 3).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Patent Document 3

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, as shown in FIG. 14, in the roll material 1 in which a paper material with a sealing material laminated in the above-described pattern is wound, although the sealing material is continuously provided at one end edge S1 in the roll axis direction, it is not provided or is discontinuously provided at the other end edge S2 in the roll axis direction. Therefore, the thickness due to the sealing material causes a difference between the outer diameter d1 on one side and the outer diameter d2 on the other side in the roll axis direction. For example, while a roll material in which only the paper material is wound (shown by a two-dot chain line in FIG. 14) has a cylindrical outer shape, the shape of the roll material 1 in which the sealing material is continuously provided only at one end edge S1 in the roll axis direction (shown by a solid line in FIG. 14) may be distorted, for example, into a frustum of a cone shape. Such a shape distortion may lead to a deterioration in the quality of the roll material, such as wrinkles or warping occurring in the paper material or poor feeding of the material. Therefore, there is room for improvement in ensuring the quality of the roll material.

[0005] This case was devised by paying attention to such problems, and one of its purposes is to ensure the quality of the roll material. Note that, not limited to this purpose, the actions and effects derived from each configuration shown in the "Mode for Carrying Out the Invention" described later, which are actions and effects not obtainable by the conventional technology, can also be positioned as other purposes of this case.

Means for Solving the Problems

[0006] The roll material disclosed herein is a packaging roll material in which a single strip-shaped paper material is wound in a roll shape, and a sealing material is partially laminated in advance on the paper material. This roll material includes a first additional portion that adds thickness in the roll diameter direction of the paper material by an end sealing material, which is at least a part of the sealing material laminated in advance in the thickness direction with respect to the paper material and is continuously provided in the roll circumferential direction along one end edge in the roll axis direction of the paper material, and a second additional portion that adds thickness in the roll diameter direction of the paper material by a laminated material laminated in advance in the thickness direction with respect to the paper material and is continuously provided in the roll circumferential direction along the other end edge in the roll axis direction of the paper material.

Effects of the Invention

[0007] According to this, the quality of the roll material can be ensured.

Brief Description of the Drawings

[0008]

Figure 1

Figure 2

Figure 3

Figure 4

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Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Figure 13

Figure 14

Modes for Carrying Out the Invention

[0009] A roll material as an embodiment will be described. This roll material is a packaging roll material in which a single paper material in a strip shape (also referred to as a "web shape") is wound in a roll shape. In this embodiment, two embodiments will be illustrated. The roll material of each embodiment is used to wrap the contents such as products with a single-sheet paper (sheet) cut to an appropriate length at the downstream part of the production line for manufacturing the products. In each embodiment, a collection of a plurality of toilet rolls is exemplified as the contents to be wrapped.

[0010] The sealing material of the roll material is partially laminated in advance on the paper material in order to join and seal the portions (superposed portions) superposed by packaging and the portions (folded portions) folded. Regarding the front side and the back side of the paper material used in the following description, the front side means the side facing the outside after packaging, and the back side means the side facing the inside (the side of the contents) after packaging. In other words, one of the inner and outer sides in the roll diameter direction of the paper material means either the front side or the back side, and the other of the inner and outer sides in the roll diameter direction of the paper material means the other of the front side and the back side. In addition, the packaging forms described in the following embodiments include wrap-around packaging (caramel packaging).

[0011] [I. First Embodiment] [I-I. Configuration] As shown in FIG. 1, the roll material 11 of this embodiment is a packaging material in which a strip-shaped paper material 12 is wound in a roll shape. By cutting the paper material 12 fed out from the roll material 11 to a required length in the longitudinal direction (in the roll shape, the circumferential direction of the roll) D1, a sheet 13 in a single-sheet shape as shown in FIG. 3 is formed. This sheet 13 is used to wrap the contents (here, a collection of toilet rolls) 10 as shown in FIG. 5.

[0012] As shown in FIGS. 1 and 2(a), on one end edge S1 in the roll axis direction D2 of the front side F1 of the paper material 12, a sealing material 14 (one-end sealing material) is continuously provided in the roll circumferential direction D1 A sealed material layer 14a that has been formed is pre-laminated. The sealed material layer 14a exemplified here is disposed in a region extending in a strip shape with dimensions in the roll axis direction smaller than those of the paper material 12. The sealed material layer 14a is a part (first addition part) that adds thickness in the roll diameter direction of the paper material 12. Here, an example in which the sealed material layer 14a is formed to have a predetermined thickness t1 is given. One end edge S1 of the front surface F1 of the paper material 12 is a portion that is overlapped and joined in a state of facing the back surface F2 of the other end edge S2 of the paper material 12 (see FIG. 5).

[0013] An adhesive is used for the sealed material 14 to join and seal overlapping parts and folding parts by packaging. Here, an example in which a heat-sensitive sealed material (so-called “hot melt adhesive”) that exhibits an adhesive function when heat is applied is used as the adhesive is given. Note that, as the adhesive here, a pressure-sensitive sealed material that exhibits an adhesive function when pressure is applied may be used.

[0014] Further, on the other end edge S2 of the front surface F1 of the paper material 12 in the roll axis direction D2, a laminated material layer 15a in which the laminated material 15 is continuously provided in the roll circumferential direction D1 is pre-laminated. That is, the sealed material layer 14a and the laminated material layer 15a of the present embodiment are disposed only on the front surface (one of the inner and outer sides in the roll diameter direction of the paper material) of the paper material 12. The laminated material layer 15a exemplified here is disposed in a region extending in a strip shape with dimensions in the roll axis direction smaller than those of the paper material 12.

[0015] The laminated material layer 15a is a part (second addition part) that adds thickness in the roll diameter direction of the paper material 12. This laminated material layer 15a functions as a spacer that increases the winding diameter (outer diameter) on the other end edge S2 side of the roll material 11 so as to correspond to the increase in the winding diameter (outer diameter) on the one end edge S1 side of the roll material 11 by the sealed material layer 14a. Here, an example of the laminated material layer 15a formed to have a thickness t2 that is the same as or substantially the same as the thickness t1 of the sealed material layer 14a is given. Even when the thickness t1 of the sealing material layer 14a and the thickness t2 of the laminated material layer 15a are different, the difference between these thicknesses t1 and t2 (the absolute value of "t1 - t2") shall be smaller than the thickness of the paper material 12.

[0016] Here, as an example of the laminated material 15, an example where a printing material such as ink pre-coated (a printing layer pre-laminated to the paper material 12) is applied is given. However, a sealing material similar to the sealing material 14 may be applied to the laminated material 15 (the other-end sealing material). That is, among the sealing materials partially pre-laminated to the paper material 12, all may be the sealing material 14 of the sealing material layer 14a, or a part may be the sealing material 14 of the sealing material layer 14a and the other part may be the laminated material 15 of the laminated material layer.

[0017] The other-end edge S2 of the front surface F1 of the paper material 12 on which the laminated material layer 15a is pre-laminated is overlapped with the one-end edge S1 on which the sealing material layer 14a is pre-laminated by body pasting as a preliminary preparation for caramel packaging. In the state overlapped in this way, the laminated material layer 15a of the other-end edge S2 is a portion located outside and exposed from the one-end edge S1, and becomes a portion forming the appearance after packaging (see Fig. 5). Note that the sealing material layer 14a and the laminated material layer 15a can be pre-laminated to the front surface F1 of the paper material 22 by known methods such as coating and printing of the sealing material 14 and the laminated material 15, respectively.

[0018] [I-II. Action and Effect] In the roll material 11 according to the present embodiment, not only the sealing material layer 14a is pre-laminated to the one-end edge S1 in the roll-axis direction D2 of the paper material 12, but also the laminated material layer 15a is pre-laminated to the other-end edge S2 in the roll-axis direction D2. Therefore, compared with a roll material with a distorted shape due to the sealing material being pre-laminated only to one-end edge in the roll-axis direction of the paper material (see the solid line in Fig. 14), it is possible to suppress the difference in the outer diameter d between one side and the other side in the roll-axis direction D2. By suppressing the distortion of the shape of the roll material 11 in this way, wrinkles and warping can be prevented in the paper material 12. The occurrence of wrinkles can be suppressed, and the feeding failure of the paper material can also be suppressed. Therefore, the quality of the roll material 1 can be ensured.

[0019] Since the sealant layer 14a and the laminate layer 15a exemplified here have the same or substantially the same thickness, as shown in FIG. 4, the outer diameter (winding diameter) d of the roll material 11 can be made uniform in the roll axis direction. Note that the two-dot chain line in FIG. 4 shows the outer diameter (winding diameter) of the roll material without the sealant layer and the laminate layer for reference. In the roll material 11 exemplified in the present embodiment, since both the sealant layer 14a and the laminate layer 15a are arranged only on the front surface F1 of the paper material 12, these layers 14a, 15a can be provided only by laminating them from the front surface (one side) side, contributing to the reduction of manufacturing costs.

[0020] Furthermore, when a printing material is used for the laminate 15 of the laminate layer 15a, since the laminate layer 15a is the portion that forms the appearance after packaging, the shape of the roll material 11 can be prevented from being distorted by using a printing material for the appearance such as color and pattern. In addition, when a sealant is used for the laminate 15 of the laminate layer 15a, compared with the case where the laminate layer is laminated in advance on the back surface F2 of the paper material, the sealant layer 14a and the laminate layer 15a in the paper material 12 fed out from the roll material 11 can be prevented from contacting or being soiled by peripheral equipment.

[0021] In addition, since a heat-sensitive sealant is used for the sealant 14, the adhesion of the sealant 14 in the roll material 11 wound in a roll shape is suppressed, and the adhesion function can be exhibited only by heating during packaging, enabling bonding during packaging. Similarly, when a pressure-sensitive sealant is used for the sealant 14, the adhesion of the sealant 14 in the roll material 11 wound in a roll shape is suppressed, and the adhesion function can be exhibited only by applying pressure during packaging, enabling bonding during packaging.

[0022] [I-III. Modification Example] In the above-described first embodiment, an example in which both the sealing material layer 14a and the laminated material layer 15a are disposed on the front surface F1 has been described. However, the present invention is not limited to such a configuration, and the sealing material layer 14a may be disposed on either the front surface F1 or the back surface F2 of the paper material 12, and the laminated material layer 15a may be disposed on the other of the front surface F1 and the back surface F2 of the paper material 12.

[0023] Specifically, as shown in FIG. 2(b), the sealing material layer 14a may be provided on the front surface F1 of one end edge S1, and the laminated material layer 15a may be provided on the back surface F2 of the other end edge S2. In this case, since the back surface F2 of the other end edge S2 is not exposed and cannot be seen from the outside, it is difficult to improve the appearance even if a printing material is used for the laminated material 15. Therefore, it is preferable to apply a sealing material to the laminated material 15. According to such a configuration, the sealing material layer 14a of the sealing material 14 and the laminated material layer 15a formed of the sealing material can be joined (adhered to each other, so to speak) and bonded. Such a joining form is suitable for body pasting, and it is possible to avoid unnecessary adhesion of the laminated material layer 15a to the contents, and it is also possible to avoid exposure of the laminated material layer 15a using the sealing material. Note that, contrary to the laminated arrangement illustrated in FIG. 2(b), the sealing material layer 14a may be provided on the back surface F2 of one end edge S1, and the laminated material layer 15a may be provided on the front surface F1 of the other end edge S2.

[0024] [II. Second Embodiment] [II-I. Configuration] As shown in FIG. 6, in the roll material 21 of the present embodiment as well, the paper material 22 is wound in a roll shape. By cutting the paper material 22 fed out from the roll material 21 to a required length in the longitudinal direction (circumferential direction of the roll when in a roll shape) D1, a sheet-like sheet 23 as shown in FIG. 8 is formed, and the aggregate of toilet rolls, which is the content 10, is packaged with this sheet 23.

[0025] As shown in FIGS. 6 and 7, of the back surface F2 of the paper material 22, a sealing material layer 24a (first additional part) is provided at one edge S1 in the roll axis direction D2 in the roll circumferential direction D1, and a sealing material layer 25a (second additional part) is provided at the other edge S2 in the roll axis direction D2. That is, the sealing material layers 24a and 25a of the present embodiment are arranged only on the back surface of the paper material 22 (one of the inner and outer sides in the roll diameter direction of the paper material). The roll material 21 of the present embodiment is also provided with sealing material layers 26a and 27a continuously provided in the roll axis direction D2.

[0026] The sealing material layers 26a and 27a are intermittently provided in the roll circumferential direction D1, and are portions (third additional parts) that add thickness in the roll diameter direction of the paper material 22 by an adhesive (sealing material) previously laminated on the paper material 22. That is, for the sealing material layers 26a and 27a, a part of the adhesive (intermittent sealing material) excluding the adhesives of the sealing material layers 24a and 25a at the edges S1 and S2 of the adhesive previously laminated on the paper material 22 is used. These sealing material layers 26a and 27a are arranged so as to connect the sealing material layers 24a and 25a to each other in the roll axis direction D2, and here, an example of being extended in a band shape is given. Each of the above sealing material layers 24a, 25a, 26a, and 27a can be formed by applying or printing the sealing materials 24, 25, 26, and 27 on the back surface F2 of the paper material 22 with a uniform or substantially uniform thickness.

[0027] As shown in FIG. 6, the sealing material layers 26a and 27a continuous in the roll axis direction D2 are intermittently provided in the roll circumferential direction D1 at intervals corresponding to the required length when cutting the paper material 22 in the longitudinal direction D1. Thereby, as shown in FIG. 8, the sealing material layers 24a, 25a, 26a, and 27a are formed in a square-shaped U shape along the entire outer peripheral portion of the four sides in the front view of the sheet-like sheet 23.

[0028] For example, when the back surface F2 of the other end edge S2 is overlapped outside with respect to one end edge S1 of the front surface F1 in the paper material 22, the sealing material 25 of the sealing material layer 25a provided on the back surface F2 of the other end edge S2 is used for body sticking. In such a packaging form, the sealing material 24 of the sealing material layer 24a provided on the back surface F2 of the one end edge S1 faces the contents without contributing to the packaging bonding and is packaged.

[0029] Conversely, when the back surface F2 of the one end edge S1 is overlapped outside with respect to the other end edge S2 of the front surface F1 in the paper material 22, the sealing material 24 of the sealing material layer 24a provided on the back surface F2 of the one end edge S1 is used for body sticking. In such a packaging form, the sealing material 25 of the sealing material layer 25a provided on the back surface F2 of the other end edge S2 faces the contents without contributing to the packaging bonding and is packaged.

[0030] The sealing materials 26 and 27 of the sealing material layers 26a and 27a are used to join and seal the portion where the sheet 23 is folded in the caramel packaging. Note that, similar to the first embodiment, a heat-sensitive sealing material or a pressure-sensitive sealing material can be applied to the sealing materials 24, 25, 26, and 27 forming the sealing material layers 24a, 25a, 26a, and 27a. However, for the one that does not contribute to the packaging bonding among the sealing material layers 24a and 25a, not limited to the sealing materials 24 and 25, any laminated material that adds thickness in the roll diameter direction of the paper material 22, such as the printing material exemplified in the first embodiment, can be used.

[0031] [II-II. Action and Effect] In the roll material 11 of the first embodiment, since no sealing material or laminated material is provided between the sealing material layer 14a and the laminated material layer 15a, the portion between these layers 14a and 15a can have a drum shape with an outer diameter smaller than the portion on the outer side in the roll axis direction with respect to this portion. In contrast, in the roll material 21 according to the present embodiment, among the paper material 22 in the roll axis direction Sealing material layers 24a and 25a are provided on one end edge S1 and the other end edge S2 of D2, and sealing material layers 26a and 27a that are continuously provided in the roll axis direction D2 are also provided. Therefore, the outer diameter of the portion located between the sealing material layers 24a and 25a in the roll material 21 is raised by the sealing material layers 26a and 27a, and the difference in outer diameter between this portion and the portion outside in the roll axis direction with respect to this portion can be suppressed.

[0032] Therefore, the distortion of the shape of the roll material 21 can be further suppressed, the occurrence of wrinkles and creases in the paper material 22 can be further suppressed, and the feeding failure of the paper material can be further suppressed. Therefore, the quality of the roll material 21 can be improved. In addition, among the configurations of the second embodiment, the same configurations as those of the first embodiment can obtain the above-described actions and effects in the first embodiment.

[0033] [II-III. Modification Example] In the above-described second embodiment, an example in which the sealing material layers 24a, 25a, 26a, and 27a are all provided on the back surface F2 of the paper material 22 has been described. The present invention is not limited to such a configuration, and at least a part of the sealing material layers 24a, 25a, 26a, and 27a may be provided on the front surface F1. For example, as shown in FIGS. 9 to 11 cut into sheet-like sheets 23, U-shaped sealing material layers 24a, 26a, and 27a may be provided on the front surface F1 of the paper material 22, and U-shaped sealing material layers 25a, 26a, and 27a may be provided on the back surface F2 of the paper material 22. In this case, as shown in FIG. 11(a), the sealing material layers 24a, 26a, and 27a are arranged in a U-shape at the edge portions of three sides out of the four sides in a front view, excluding the other end edge S2. Further, as shown in FIG. 11(b), the sealing material layers 25a, 26a, and 27a are arranged in a U-shape at the edge portions of three sides out of the four sides in a front view, excluding the one end edge S1.

[0034] With the above configuration, as shown in Fig. 11, on the sheet 23, sealant layers 24a, 25a, 26a, and 27a are formed in a square shape along the entire outer peripheral portion of all four sides in a front view, in a shape like the Chinese character "ロ". That is, in order to join and seal the folded portions at both ends of the content 10, sealant layers 26a and 27a are formed on both the front surface F1 and the back surface F2 of the sheet 23. Thus, by providing the sealants 26 and 27 on both the front surface F1 and the back surface F2 of the sheet 23, the joining and sealing of the folded portions can be performed more reliably.

[0035] Regarding the thickness of the sealant layers 24a, 25a, 26a, and 27a, it is preferable to form the layers such that the double sealant layers 26a and 27a have the same thickness as the single sealant layers 24a and 25a when doubled. In addition, in the second embodiment (Fig. 8) and its modified example (Fig. 11), for those or a part of the sealant layers 24a, 25a, 26a, and 27a that do not contribute to the packaging bonding, any laminate material that adds thickness in the roll diameter direction of the paper material 22, such as the printing material exemplified in the first embodiment, can be used.

[0036] [III. Others] Although the embodiments have been described above, the present invention can be implemented by appropriately modifying the configurations of the above embodiments without departing from the spirit thereof. For example, in the second embodiment, the above-mentioned sealant layers 26a and 27a may be partially provided only in the necessary areas. Also, the thickness of the sealant layers 26a and 27a (total thickness in the case of double-sided installation) is preferably equal to or less than the thickness of the sealant layers 24a and 25a (total thickness in the case of double-sided installation).

[0037] Also, in the above embodiment, caramel packaging is exemplified as the packaging form, but the roll material of this case is not limited to caramel packaging and may be applied to various packaging forms. Note that the roll material according to the modified example of the second embodiment described with reference to Figs. 9 to 11 Since the sealing material 24 (first additional part) formed by the sealing material layer 24a on the front surface F1 and the sealing material 25 (second additional part) formed by the sealing material layer 25a on the back surface F2 can be body-attached in a facing state, it is suitable for caramel packaging. In such a roll material for caramel packaging, the heat-sensitive sealing materials of the sealing material layers 24a and 25a are used for body attachment by being pressure-bonded while heat is applied from a heat source between the heat source that exhibits the adhesive function of the heat-sensitive sealing material and the content 10. When this body-attaching method is adopted, the amount of heat applied from the heat source to the heat-sensitive sealing material tends to decrease as the packaging speed in-line increases. Therefore, by using the sealing materials 24 and 25 that are body-attached with the sealing material layers 24a and 25a facing each other, it is possible to secure the adhesive force for body attachment even with a reduced amount of heat, and the packaging efficiency (productivity) can be improved.

[0038] Furthermore, the sealing materials 26 and 27 (third additional part) of the roll material according to the modified example of the second embodiment described with reference to FIG. 10 are preferably arranged such that the sealing material layers 26a and 27a laminated on the front surface F1 and the sealing material layers 26a and 27a laminated on the back surface F2 do not overlap each other in a front view (plan view). Specifically, the sealing material layers 26a and 27a on the front surface F1 are arranged in a stripe shape intermittently juxtaposed along the roll circumferential direction D1 (that is, a mode in which regions where the sealing material layer is not provided are intermittently juxtaposed along the roll circumferential direction D1), and it is preferable that the sealing material layers 26a and 27a on the back surface F1 are arranged in a region that overlaps in a front view with a region where the sealing material layer is not provided intermittently on the front surface F1. Even if the sealing material layers 26a and 27a arranged in this way are laminated with the same thickness as the sealing material layers 24a and 25a, it is possible to suppress the sealing materials 26 and 27 from having a double thickness (to have the same thickness as the sealing material 24). Therefore, the distortion of the shape of the roll material 21 can be reliably suppressed, the occurrence of wrinkles and creases in the paper material 22 can be further suppressed, and the feeding failure of the paper material can be further suppressed. Therefore, the quality of the roll material 21 can be improved. In addition, although an aggregate of toilet rolls has been exemplified as the content to be packaged, the content to be packaged using the paper material of the roll material in this case is not limited to this and can be applied to various contents.

Explanation of Reference Signs

[0039] 1, 11, 21 Roll material 12, 22 Paper material 13, 23 Sheet (sheet) 14, 24, 25, 26, 27 Sealing material 14a, 24a, 25a, 26a, 27a Sealing material layer 15 Laminated material 15a Laminated material layer 2 Paper material D1 Longitudinal direction (roll circumferential direction) d Outer diameter (winding diameter) of roll material 21 D2 Roll axis direction F1 Front surface of paper material 12 (sheet 13) F2 Back surface of paper material 12 (sheet 13) S1 One end edge in roll axis direction D2 S2 The other end edge in roll axis direction D2 t1 Thickness of sealing material layer 14a t2 Thickness of laminated material layer 15a

Claims

1. A roll material for packaging in which a single strip of paper material is wound in a roll shape and a sealing material is partially laminated in advance on the paper material, a first additional portion that is continuously provided in the roll circumferential direction along one end edge in the roll axis direction of the paper material and adds thickness in the roll diameter direction of the paper material by at least a part of one end sealing material that is laminated in advance in the thickness direction with respect to the paper material; a second additional portion that is continuously provided in the roll circumferential direction along the other end edge in the roll axis direction of the paper material and adds thickness in the roll diameter direction of the paper material by a laminated material that is laminated in advance in the thickness direction with respect to the paper material; a third additional portion that is continuous along the roll axis direction of the paper material and intermittently provided in the roll circumferential direction, and adds thickness in the roll diameter direction of the paper material by an intermittent sealing material that is at least a part of the sealing material laminated in advance in the thickness direction with respect to the paper material, excluding the one end sealing material, and the first additional portion is disposed on one of the inner and outer sides in the roll diameter direction of the paper material, the second additional portion adds thickness in the roll diameter direction of the paper material by the laminated material composed of only the other end sealing material that is at least a part of the sealing material excluding the one end sealing material, and is disposed on the other of the inner and outer sides in the roll diameter direction of the paper material A roll material characterized by the above.

2. The sealing material is a heat-sensitive sealing material or a pressure-sensitive sealing material that exhibits an adhesive function when heat or pressure is applied. The roll material according to claim 1, characterized by the above.

3. Using the roll material according to claim 1 or 2, the first additional portion and the second additional portion are overlapped to package the contents in a combined wrapping type. A packaging method characterized by the above.

4. The roll material according to claim 1 or 2 is packaged in a combined wrapping type, and the first additional portion and the second additional portion are overlapped and bonded. A bonded structure characterized by the above.

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