Packing tape

Abstract

[Problem] To control the advancement direction of tearing in a packing tape. [Solution] The present invention has a first belt-shaped member and a second belt-shaped member that overlaps the first belt-shaped member, wherein first tearing guide lines are formed in a first region where the first and second belt-shaped members overlap, and second tearing guide lines and third tearing guide lines are formed in a second region where the first and second belt-shaped members do not overlap. The first and second tearing guide lines are provided oriented along the longitudinal direction, and the third tearing guide lines are provided oriented along the width direction. The second tearing guide lines are provided closer to the side of the first tearing guide lines than the third tearing guide lines in the width direction. The first tearing guide lines each have both ends in the longitudinal direction that are inclined in directions in which the longitudinal-direction separation distance between said ends increases as the ends approach the second tearing guide lines. A plurality of each of the first, second, and third tearing guide lines are provided at intervals across the entire length in the longitudinal direction.

Description

Packing tape

[0001] The present invention relates to packaging tape.

[0002] Patent Document 1 discloses a packaging tape having a base tape and a core tape superimposed on the base tape. A package sealed with the packaging tape can be opened by peeling the core tape off the package and breaking the base tape.

[0003] Japanese Patent Application Publication No. 8-27438

[0004] In the core tape of Patent Document 1, the direction of tearing of the base tape when the core tape is peeled off is along the longitudinal direction. However, during the peeling process, the direction of tearing may deviate from the longitudinal direction. This affects the ease of opening the packaging tape.

[0005] In this type of packaging tape, there is a need to be able to control the direction of tearing in order to make it easier to open the packaging material.

[0006] The present invention provides a sheet-like material having a first belt-shaped member and a second belt-shaped member provided on one surface of the first belt-shaped member in a thickness direction, the second belt-shaped member being provided between one end and the other end in a width direction of the first belt-shaped member along a longitudinal direction of the first belt-shaped member, a first break induction wire formed in a first region where the first belt-shaped member and the second belt-shaped member overlap, and a second break induction wire and a third break induction wire formed in a second region where the first belt-shaped member and the second belt-shaped member do not overlap, the first break induction wire and the second break induction wire being provided in a direction along the longitudinal direction, the third break induction wire being provided in a direction along the width direction, and the second break induction wire being provided closer to the first break induction wire than the third break induction wire in the width direction, The first break guide wire has both ends in the longitudinal direction positioned closer to the second break guide wire than the center, and the both ends are inclined in a direction such that the distance between them in the longitudinal direction increases as they approach the second break guide wire, and the first break guide wire, the second break guide wire, and the third break guide wire are each provided at intervals over the entire length of the longitudinal direction of the packaging tape.

[0007] According to the present invention, the direction of tear progression in the packing tape can be controlled.

[0008] FIG. 1 is a diagram illustrating a packaging tape. FIG. 2 is a diagram illustrating a packaging tape. FIG. 3 is a diagram illustrating a packaging tape. FIG. 4 is a diagram illustrating a first use example of the packaging tape. FIG. 5 is a diagram illustrating a first use example of the packaging tape. FIG. 6 is a diagram illustrating a second use example of the packaging tape. FIG. 7 is a diagram illustrating a second use example of the packaging tape. FIG. 8 is a diagram illustrating a packaging tape according to a first modification. FIG. 9 is a diagram illustrating a packaging tape according to a second modification. FIG. 10 is a diagram illustrating a use example of the packaging tape according to the second modification.

[0009] An embodiment of the present invention will be described below. FIGS. 1 and 2 are diagrams illustrating a packaging tape 7. FIG. 1 is a perspective view of the packaging tape 7. FIG. 2(a) is an enlarged view of region A in FIG. 1. FIG. 2(b) is a schematic view of the A-A cross section of FIG. 2(a). Note that in FIGS. 1 and 2(a), the core tape 9 is cross-hatched to make the position of the core tape 9 easier to understand. While FIG. 2 exaggerates the thicknesses of the base tape 8, core tape 9, and adhesive layer 85, in reality, the packaging tape 7 has a sufficiently thin thickness that it functions as a single adhesive tape when the base tape 8 and core tape 9 are stacked together. The sizes and spacing of the first to fifth break induction wires 1 to 5 are also shown.

[0010] (Packaging Tape 7) As shown in FIG. 1, the packaging tape 7 has a configuration in which a strip-shaped base tape 8 (first strip-shaped member) and a strip-shaped core tape 9 (second strip-shaped member) are overlapped.

[0011] As shown in Fig. 2(b), the base tape 8 has a strip-shaped base 80. One surface 81 of the base 80 in the thickness direction is provided with a layer of adhesive (adhesive layer 85) whose main component is resin, rubber, or the like. The adhesive layer 85 is provided over the entire surface of the one surface 81 of the base 80. The other surface 82 of the base 80 in the thickness direction is provided with a layer of release agent (release layer) whose main component is silicone or the like (not shown). The release layer is provided over the entire surface of the other surface 82 of the base 80.

[0012] A core tape 9 is attached to the adhesive layer 85 of the base tape 8. The core tape 9 has a total length in the longitudinal direction that is approximately the same as the total length of the base tape 8, and is provided on the base tape 8 over the entire length in the longitudinal direction (see FIG. 1).

[0013] As shown in Figure 2 (b), the core tape 9 has a strip-shaped base 90. The other surface 92 of the base 90 in the thickness direction is attached to the adhesive layer 85 of the base tape 8. One surface 91 of the base 90 in the thickness direction is provided with a layer of a release agent (release layer) containing silicon or the like as a main component (not shown). The release layer is provided over the entire surface 91 of the base 90. An adhesive layer may be provided on the other surface 92 of the base 90.

[0014] As shown in Fig. 1, the width W9 of the core tape 9 is narrower than the width W8 of the base tape 8 (W9 < W8). As shown in Fig. 2(b), the core tape 9 is overlapped in the thickness direction on the base tape 8 at positions away from one end 83 and the other end 84 of the base tape 8 in the width direction.

[0015] As shown in (a) of Figure 2, when viewed from the overlapping direction of the base tape 8 and the core tape 9 (front-to-back direction on the paper in the figure), the midline of the core tape 9 in the width direction is arranged to coincide with the midline Xc of the base tape 8.

[0016] Therefore, when viewed from the overlapping direction of the base tape 8 and the core tape 9, the packaging tape 7 is divided into a region Ra where the base tape 8 and the core tape 9 overlap, and a region Rb where the base tape 8 and the core tape 9 do not overlap. The region Rb where the base tape 8 and the core tape 9 do not overlap is provided on one side and the other side of the region Ra in the width direction. In the packaging tape 7 according to this embodiment, the region Ra where the base tape 8 and the core tape 9 overlap constitutes a first region. Furthermore, the region Rb where the base tape 8 and the core tape 9 do not overlap constitutes a second region. In the following description, the region Ra where the base tape 8 and the core tape 9 overlap and the region Rb where the base tape 8 and the core tape 9 do not overlap will also be simply referred to as regions Ra and Rb.

[0017] As shown in (a) of Fig. 2, the packing tape 7 has a plurality of break induction wires formed thereon to induce breakage of the packing tape 7. As shown in (b) of Fig. 2, a first break induction wire 1 is formed in region Ra. The first break induction wire 1 penetrates both the base tape 8 and the core tape 9 in the thickness direction. Furthermore, a second break induction wire 2, a third break induction wire 3, a fourth break induction wire 4, and a fifth break induction wire 5 are formed in regions Rb, Rb, respectively. These second break induction wire 2 to fifth break induction wire 5 penetrate the base tape 8 in the thickness direction.

[0018] 2A, the first break induction wire 1 to the fifth break induction wire 5 are spaced apart from one another in the width direction. The first break induction wire 1 to the fifth break induction wire 5 are respectively provided in a region on one end 83 side of the intermediate line Xc of the base tape 8 and a region on the other end 84 side of the base tape 8. The first break induction wire 1 to the fifth break induction wire 5 provided on the one end 83 side of the base tape 8 from the intermediate line Xc and the first break induction wire 1 to the fifth break induction wire 5 provided on the other end 84 side of the base tape 8 from the intermediate line Xc are arranged symmetrically with respect to the intermediate line Xc.

[0019] As shown in the enlarged region of Fig. 2(a), the first fracture induction wire 1 is a linear incision formed along the longitudinal direction. Specifically, the first fracture induction wire 1 has a first slit 11 formed along a straight line Lx1 parallel to the midpoint line Xc, a linear second slit 12 formed along a straight line Lp intersecting the straight line Lx, and a linear third slit 13 formed along a straight line Lq intersecting the straight lines Lx and Lp. The second slit 12 and the third slit 13 constituting the first fracture induction wire 1 are straight lines including a longitudinal component and a widthwise component.

[0020] The second slit 12 and the third slit 13 are connected to one end and the other end of the first slit 11 (center portion), respectively, and constitute both ends of the first breakage-inducing wire 1. The second slit 12 and the third slit 13 are inclined in a direction such that the distance L1 between them increases as they approach the second breakage-inducing wire 2 (described later). In this embodiment, the inclination angle θ of the second slit 12 and the third slit 13 relative to the first slit 11 is set to 45°. Note that the inclination angle θ of the second slit 12 and the third slit 13 may be an angle other than 45°. By setting the inclination angle to 45°, the longitudinal and widthwise components of the second slit 12 and the third slit 13 can be made equal, making it easier to induce breakage in both the longitudinal and widthwise directions.

[0021] 2A, a plurality of first break induction wires 1 are provided at intervals CL1 in the direction of the straight line Lx1. The plurality of first break induction wires 1 are provided over the entire length of the packing tape 7 in the longitudinal direction.

[0022] In the width direction, a second break induction wire 2 is provided at a position adjacent to the first break induction wire 1. The second break induction wire 2 is a linear cut formed along a straight line Lx2 parallel to the midpoint line Xc.

[0023] The second break induction wires 2 are arranged in a plurality at intervals CL2 in the direction of the straight line Lx2. The intervals CL2 between the second break induction wires 2 in the direction of the straight line Lx2 are set to be narrower than the intervals CL1 between the first break induction wires 1 (CL2<CL1). The plurality of second break induction wires 2 are arranged over the entire length of the packing tape 7 in the longitudinal direction.

[0024] Third break induction wires 3 are provided at positions adjacent to one end 83 and the other end 84 of the base tape 8 in the width direction. The third break induction wires 3 are linear cuts formed along a straight line Ly1 perpendicular to the midpoint line Xc. A plurality of third break induction wires 3 are provided at intervals CL3 in the direction of a straight line Lx3 parallel to the midpoint line Xc. The plurality of third break induction wires 3 are provided over the entire length of the packing tape 7 in the longitudinal direction.

[0025] A fourth break induction wire 4 is provided at a position adjacent to the third break induction wire 3 on the side of the intermediate line Xc in the width direction. The fourth break induction wire 4 is a linear cut formed along a line Ly2 parallel to the line Ly1. A plurality of fourth break induction wires 4 are provided at intervals CL4 along a line Lx4 parallel to the intermediate line Xc. The interval CL4 between adjacent fourth break induction wires 4, 4 in the line Lx4 direction is approximately the same as the interval CL3 between adjacent third break induction wires 3, 3 in the line Lx3 direction (CL4 ≈ CL3). The plurality of fourth break induction wires 4 are provided over the entire length of the packing tape 7 in the longitudinal direction.

[0026] The fourth break induction wire 4 is spaced a distance Dy1 in the width direction from the third break induction wire 3 and a distance Dx in the longitudinal direction from the third break induction wire 3. Therefore, the fourth break induction wire 4 is offset from the third break induction wire 3 in both the longitudinal and width directions.

[0027] The distance Dx between adjacent fourth break induction wires 4 and third break induction wires 3 in the longitudinal direction is set to approximately half the distance CL3 between adjacent third break induction wires 3, 3 in the longitudinal direction (Dx ≈ CL3 / 2). Therefore, when the packing tape 7 is viewed from the width direction, the third break induction wires 3 and the fourth break induction wires 4 are arranged alternately at the distance Dx in the longitudinal direction.

[0028] In the width direction, a fifth break induction wire 5 is provided between the second break induction wire 2 and the fourth break induction wire 4. The distance Dy3 between the second break induction wire 2 and the fifth break induction wire 5 in the width direction is set narrower than the distance Dy2 between the fourth break induction wire 4 and the fifth break induction wire 5 (Dy3<Dy2). Note that the distance Dy2 between the fourth break induction wire 4 and the fifth break induction wire 5 is set wider than the distance Dy1 between the third break induction wire 3 and the fourth break induction wire 4 (Dy2>Dy1).

[0029] The fifth break induction wire 5 is a linear cut formed on a straight line Ly1 that passes through the third break induction wire 3. Therefore, when the packing tape 7 is viewed from the longitudinal direction, the fifth break induction wire 5 is arranged so as not to overlap with the fourth break induction wire 4.

[0030] The fifth break induction wires 5 are provided at intervals CL5 along the line Lx5 parallel to the midpoint Xc. The interval CL5 between adjacent fifth break induction wires 5, 5 along the line Lx5 is approximately equal to the interval CL3 between adjacent third break induction wires 3, 3 along the line Lx3 (CL5≈CL3). The fifth break induction wires 5 are provided over the entire length of the packing tape 7 in the longitudinal direction.

[0031] In this embodiment, the first break induction wire 1 and the second break induction wire 2, which are formed along the longitudinal direction, guide the packing tape 7 to tear in the width direction. In addition, the third break induction wire 3 to the fifth break induction wire 5, which are formed along the width direction, and the second slit 12 and the third slit 13 of the first break induction wire 1, which are formed in the directions of the straight lines Lp and Lq that intersect with the longitudinal direction, guide the packing tape 7 to tear in the longitudinal direction.

[0032] Here, the term "the packing tape 7 is cut in the width direction" means that the tearing progresses in the vertical direction in Fig. 2A, resulting in the packing tape 7 being cut and divided in the left-right direction. The term "the packing tape 7 is cut in the length direction" means that the tearing progresses in the left-right direction in Fig. 2A, resulting in the packing tape 7 being cut and divided in the up-down direction.

[0033] As shown in FIG. 1 , the packaging tape 7 is in the form of a strip with a long longitudinal length. Therefore, the packaging tape 7 is provided in a state where it is wound around the outer periphery of a cylindrical core material S, i.e., wound in a roll. The packaging tape 7 is wound with one surface 81 (see FIG. 2( b) ) having an adhesive layer 85 facing inward and the other surface 82 having a release layer facing outward. In the wound packaging tape 7, the adhesive layer 85 is in contact with the adjacent release layer on the inner diameter side. Therefore, in the rolled packaging tape 7, the outermost end can be pinched and pulled, allowing the packaging tape 7 to be sequentially pulled out in the longitudinal direction from the wound portion.

[0034] 3A and 3B are diagrams illustrating the packing tape 7. Fig. 3A is a diagram illustrating the process of sealing a cardboard box 100 using the packing tape 7. Fig. 3B is a diagram illustrating the separation of the portion of the packing tape 7 attached to the cardboard box 100 from the roll portion. In Figs. 3A and 3B, the core tape 9 is cross-hatched to make it easier to understand the position of the core tape 9. Fig. 3B also schematically illustrates the size and spacing of each break guide line.

[0035] 3A, the opening of the cardboard box 100 (packaging material) is sealed by closing a pair of outer flaps 102, 102. The outer flaps 102, 102 in the closed state are fixed with packing tape 7, thereby sealing the cardboard box 100.

[0036] In this case, the worker pulls out the roll of packing tape 7 and arranges it in a direction along the mating surfaces 103 of the outer flaps 102, 102.

[0037] Next, the downstream end 7a of the packing tape 7 is attached to the side surface 101 of the cardboard box 100, and then the base tape 8 of the packing tape 7 is attached so as to straddle the outer flaps 102, 102. The core tape 9 is positioned so as to overlap the mating surface 103 of the outer flaps 102, 102. The packing tape 7 is attached over the entire length of the mating surface 103. In this way, the cardboard box 100 is sealed.

[0038] Here, the worker cuts off the packing tape 7 that has been pulled out by a predetermined length from the portion wound in a roll. The packing tape 7 has a third break guiding wire 3 and a fourth break guiding wire 4 formed along the width direction at one end 83 and the other end 84 of the base tape 8. Therefore, when the worker twists off the packing tape 7 by hand, an external force is applied in the width direction from one end 83 or the other end 84 of the base tape 8. As a result, the base tape 8 breaks along the third break guiding wire 3 or the fourth break guiding wire 4, and the break proceeds in the width direction.

[0039] For example, when an external force is applied from one end 83 of the base tape 8 in the width direction (the direction of the outline arrow in FIG. 3B), a break is induced from either the third break induction wire 3 or the fourth break induction wire 4, whichever is closer to the point of application of the external force. The break is induced by the third break induction wire 3 or the fourth break induction wire 4, and progresses in the width direction through region Rb toward the core tape 9.

[0040] Furthermore, the region Ra is formed with the first fracture induction wire 1. The second slits 12 and the third slits 13 of the first fracture induction wire 1 include widthwise components. Therefore, the first fracture induction wire 1 also makes it easier for fracture to progress in the widthwise direction in the region Ra.

[0041] Therefore, the break that reaches region Ra from region Rb is guided by second slit 12 and third slit 13 of first break guide wire 1, progresses widthwise within region Ra, and finally reaches the other end 84 of base tape 8. Then, the packing tape 7 that has been pulled out by a predetermined length is cut off from the portion wound in a roll around core material S. As a result, the packing tape 7 that has been pulled out by a predetermined length from the packing tape 7 wound in a roll around core material S can be attached to cardboard box 100 (see FIGS. 4 and 6).

[0042] If the third break induction wire 3 and the fourth break induction wire 4 are formed in positions where they overlap when viewed in at least one of the longitudinal and width directions, the strength of one end 83 and the other end 84 of the base tape 8 will be reduced. As a result, when the packaging tape 7 is pulled out from the rolled portion, it may be cut during pulling. Furthermore, it is also possible that the packaging tape 7 attached to the cardboard box 100 may be cut, for example, by impact during transportation.

[0043] Therefore, in this embodiment, the third break induction wire 3 and the fourth break induction wire 4 are formed at positions offset from each other when viewed in the longitudinal direction and the width direction. This maintains the strength of the base tape 8. This reduces the risk of the packaging tape 7 being broken during unwinding when being unwound from the roll. It also reduces the risk of the packaging tape being broken due to impact during transportation.

[0044] In this embodiment, the third break induction wires 3 and the fourth break induction wires 4 are alternately arranged in the longitudinal direction when viewed in the width direction of the packing tape 7. This makes it possible to reduce the distance between adjacent break induction wires in the longitudinal direction (the distance Dx between the third break induction wire 3 and the fourth break induction wire 4 (see FIG. 2A)). This makes it easier to induce breakage in the packing tape 7 when the packing tape 7 is pulled out from the roll and cut.

[0045] (Usage Example 1: I-Packing) Figures 4 and 5 are diagrams illustrating Usage Example 1 of the packing tape 7. Figure 4(a) is a diagram illustrating a cardboard box 100 sealed by I-pasting the packing tape 7. Figure 4(b) is a diagram illustrating area A of Figure 4(a) as viewed from the thickness direction of the packing tape 7. Figure 5(a) is a diagram illustrating the breaking of the packing tape 7 I-pasted to the cardboard box 100. Figure 5(b) is a schematic diagram of the A-A cross section of Figure 5(a) . Figure 5(c) is a diagram illustrating area B of Figure 5(a) as viewed from the thickness direction of the packing tape 7. Note that in Figures 4 and 5, the core tape 9 is cross-hatched to make the position of the core tape 9 easier to understand. Figures 4 and 5 also illustrate the size and spacing of each break guide line to make the positional relationship easier to understand.

[0046] As shown in Figure 4(a), a cardboard box 100 may be sealed by applying packing tape 7 along the mating surfaces 103 of the outer flaps 102, 102 (I-sealing). In I-sealing, the core tape 9 is positioned so as to overlap the mating surfaces 103 over the entire length of the box.

[0047] As shown in Fig. 2(b), the core tape 9 does not have an adhesive layer and is therefore not directly adhered to the cardboard box 100. Therefore, as shown in Fig. 4(b), the packing tape 7 attached to the cardboard box 100 is such that the region Ra where the core tape 9 is provided is easily separated from the cardboard box 100.

[0048] For example, an operator can grasp the core tape 9 at one end 7a of the packing tape 7 in the longitudinal direction and peel the core tape 9 longitudinally from the cardboard box 100 (see FIG. 5(a)). By peeling the core tape 9, the base tape 8 breaks along the longitudinal direction, and finally the base tape 8 is cut into one side and the other side in the width direction.

[0049] When peeling off the core tape 9, it is difficult to apply a tensile force to the core tape 9 in the longitudinal direction over the entire length of the packaging tape 7. For example, if the direction of the tensile force acting on the core tape 9 is inclined relative to the longitudinal direction, the direction of the breakage may shift.

[0050] If the direction of fracture is misaligned with the longitudinal direction, for example, the resistance to peeling increases, causing the tape to get caught midway, or the core tape 9 may be cut, hindering smooth peeling. Therefore, in this embodiment, the first fracture guide wire 1 and the second fracture guide wire 2 are formed in the packaging tape 7, making it possible to control the direction of fracture.

[0051] When the core tape 9 is peeled off from the packaging tape 7, the base tape 8 is induced to break by the first break induction wire 1 and the second break induction wire 2 in response to the peeling of the core tape 9. When the core tape 9 is peeled off from one end 7a of the packaging tape 7, the first break induction wire 1 or the second break induction wire 2, whichever is closer to the end 7a, is induced to break. For example, in the example shown in Figure 4(b) , the second break induction wire 2 is located closer to the one end 7a of the packaging tape 7 than the first break induction wire 1. Therefore, when the core tape 9 is peeled off, a break is induced from the second break induction wire 2.

[0052] Here, the distance CL2 between adjacent second break induction wires 2, 2 in the longitudinal direction is set narrower than the distance CL1 between adjacent first break induction wires 1, 1 in the longitudinal direction (CL2<CL1, see FIG. 2A). Therefore, when comparing the area where the first break induction wire 1 is formed with the area where the second break induction wire 2 is formed, the area where the second break induction wire 2 is formed has lower strength. Therefore, breakage of the base tape 8 caused by peeling off the core tape 9 is likely to progress along the second break induction wire 2.

[0053] However, as mentioned above, the direction of the pulling force acting on the core tape 9 may be inclined relative to the longitudinal direction (the direction of the white arrows a1 and a2 in Figure 5(b)). As a result, the direction of fracture of at least one of the second fracture guide wires 2, 2 located on both sides of the core tape 9 (for example, the area to the right of the midpoint Xc in the figure) deviates from the direction of the straight line Lx2 and moves toward the core tape 9 (the direction of the white arrow a1 in the figure). In this case, a force acts on the core tape 9 in a direction that twists it in the width direction.

[0054] In this embodiment, the first break induction wire 1 is formed in the core tape 9 (region Ra) at a position adjacent to the second break induction wire 2 in the width direction. The second slit 12 and the third slit 13 in the first break induction wire 1 are inclined in a direction such that the distance L1 between them increases toward the second break induction wire 2 (see FIG. 2A).

[0055] As a result, a break that deviates from the direction of straight line Lx2 and heads toward the core tape 9 is guided to the second slit 12 of the first break induction wire 1. The break guided to the second slit 12 passes through the first slit 11 and the third slit 13, and is redirected away from the core tape 9 as viewed from the midpoint line Xc. The break that progresses along the third slit 13 away from the core tape 9 reaches the second break induction wire 2 (in the direction of the black arrow in the figure) and progresses again in the direction of straight line Lx2.

[0056] In this manner, in this embodiment, by providing the first breakage guide wire 1 and the second breakage guide wire 2, even if the direction of the pulling force on the core material tape 9 is inclined relative to the longitudinal direction, the break is controlled to proceed in the longitudinal direction between the straight line Lx1 and the straight line Lx2. This reduces the risk of the core material tape 9 getting caught or being cut when peeled off, which would otherwise occur if the direction of the pulling force on the core material tape 9 is inclined relative to the longitudinal direction, thereby achieving smooth peeling.

[0057] Note that the break in the second break guide wire 2 on the other side of the core tape 9 (the region to the left of the midpoint line Xc in the figure) tends to deviate from the direction of the straight line Lx2 and move away from the core tape 9 (in the direction of the white arrow a2 in the figure). However, the region on the opposite side of the core tape 9 from the straight line Lx2 is strongly adhered to the cardboard box 100 by the adhesive layer 85 (see FIG. 2(b)), making it difficult to break. Therefore, breakage is difficult to progress in the direction away from the core tape 9 from the straight line Lx2. In this case, even if the direction of the tensile force on the core tape 9 is inclined relative to the longitudinal direction, breakage will progress in the direction of the straight line Lx2 along the second break guide wire 2, which is more likely to break.

[0058] 5A, when the core tape 9 has been completely peeled off, the mating surfaces 103 of the outer flaps 102, 102 of the cardboard box 100 are exposed. After the core tape 9 has been peeled off, the two base tapes 8, 8 that have been divided in the width direction are respectively provided across the outer flaps 102, 102 on one side and the other side of the mating surface 103 and the side surface 101. The mating surfaces 104, 104 between the outer flaps 102, 102 and the side surface 101 are oriented along the width direction of the base tape 8.

[0059] As shown in (c) of Figure 5, the two base tapes 8, 8 divided in the width direction have fracture surfaces 86, 87 along the straight line Lx2. The fracture surfaces 86, 87 are portions formed by fracture along the second fracture guide wires 2, 2 (see (b) of Figure 5). The base tapes 8, 8 are provided with fifth fracture guide wires 5, 5 at positions adjacent to the fracture surfaces 86, 87 in the width direction. The fifth fracture guide wire 5 is provided in a direction along the width direction.

[0060] 5(c), an operator can peel the base tapes 8, 8 from the fracture surfaces 86, 87 toward one end 83 and the other end 84. In this case, the fracture that starts from the fracture surfaces 86, 87 is guided in the width direction along the fifth fracture guide lines 5, 5, making it easier to reach the one end 83 and the other end 84, respectively. As a result, the base tapes 8, 8 are cut to one side and the other side in the longitudinal direction.

[0061] The base tapes 8, 8 may be peeled from one end 83 and the other end 84 in the width direction toward the fracture surfaces 86, 87. In this case, the fracture that starts from the one end 83 and the other end 84 is guided in the width direction along the third and fourth fracture guide lines 3 and 4, and therefore easily reaches the fracture surfaces 86, 87, respectively.

[0062] As a result, the packing tape 7 attached to the cardboard box 100 is released from the mating surfaces 103, 104. Therefore, the cardboard box 100 can be easily opened without using a blade or the like.

[0063] The fifth break induction wire 5 may be arranged on the straight line Ly2 passing through the fourth break induction wire 4, but it is preferable from the standpoint of ensuring strength to arrange it on the straight line Ly1 passing through the third break induction wire 3, as this allows for a wider gap in the width direction between the third break induction wire 3 and the fifth break induction wire 5.

[0064] (Usage Example 2: H-Layered) Figures 6, 7, and 8 are diagrams illustrating a second usage example of the packing tape 7. In Figures 6 to 8, the core tape 9 is cross-hatched to make it easier to understand the position of the core tape 9. Figures 6 to 8 also schematically illustrate the size and spacing of each break guide line. Figure 6(a) is a diagram illustrating a cardboard box 100 to which the packing tape 7 has been H-laid. Figure 6(b) is a view of area A in Figure 6(a) from the thickness direction of the packing tape 7. Figure 7(a) is an enlarged view of area B in Figure 6(b). Figure 7(b) is an enlarged view of area A in Figure 7(a). Figure 7(c) is an enlarged view of area B in Figure 7(a). In Figures 7(a) to 7(c), the overlapping areas of the lower core tape 9L and the upper packaging tape 7U regions Ra and Rb are hatched with different pitches. Figure 8(a) is a diagram illustrating the tearing of the packaging tape 7 attached to the cardboard box 100 in an H-shaped configuration. Figure 8(b) is a view of area A in Figure 8(a) from the thickness direction of the packaging tape 7. Figure 8(b) shows a cross section of the peeled packaging tape along the thickness direction. The fracture surfaces of the upper packaging tape 7U and the lower packaging tape 7L are also shown in simplified form.

[0065] 6A, in order to improve the sealing performance of, for example, a cardboard box 100, the packing tape 7 may be applied along the mating surface 103 and then further along the mating surface 104 (H-application). In H-application, the core tape 9 is arranged in a position where it overlaps the mating surfaces 103 and 104.

[0066] In H-type pasting, the packing tape 7 along the mating surface 103 and the packing tape 7 along the mating surface 104 are pasted in an intersecting manner. At the portion where these two packing tapes 7, 7 intersect, the packing tape 7 along the mating surface 103 is located below the packing tape 7 along the mating surface 104. In the following description, of the two intersecting packing tapes 7, 7, the packing tape 7 located on the lower side will be referred to as 7L. The reference numerals of the various parts related to the packing tape 7L will also be prefixed with L. The packing tape 7 located on the upper side will be referred to as 7U. The reference numerals of the various parts related to the packing tape 7U will also be prefixed with U.

[0067] In (b) of Figure 6, the other widthwise ends 84U and 94U of the base tape 8U and core tape 9U of the packaging tape 7U are attached facing downward in the figure, but of course one widthwise end 83U and 93U may also be attached facing downward in the figure.

[0068] As shown in (a) of Figure 7, in the H-type pasting, the core tape 9L is formed with overlapping regions 9Lb, 9Lb that overlap regions RbU, RbU of the packaging tape 7U in the longitudinal direction, and an overlapping region 9La that overlaps region RaU (the hatched area in the figure).

[0069] The overlapping regions 9Lb, 9Lb of the core tape 9L are thicker by the amount of overlap of the base tape 8U. The overlapping region 9La of the core tape 9L is further thicker by the amount of overlap of the base tape 8U and the core tape 9U (see FIG. 8B).

[0070] For example, when opening a cardboard box 100 with H-shaped packaging tape 7, one possible opening method is to peel off the core tape 9L and cut the packaging tape 7U in the longitudinal direction. However, when the packaging tape 7 is H-shaped, the strength of the area where the packaging tape 7 overlaps multiple times in the thickness direction increases. Therefore, peeling is more likely to be hindered than when opening a cardboard box 100 with I-shaped packaging tape 7U and 7L. Note that the way the core tape 9L breaks when peeled off from the packaging tape 7L in the area where the packaging tapes 7U and 7L do not overlap is the same as when the packaging tapes are I-shaped, so a detailed explanation is omitted.

[0071] 6(b), when the packing tape 7L is attached in the H-shaped manner, the longitudinal direction of the packing tape 7L and the width direction of the packing tape 7U are substantially aligned (the vertical direction in the figure). Therefore, when the core tape 9L is peeled off along the longitudinal direction from one end 7a of the packing tape 7L (the white arrow in the figure), the core tape 9L comes into contact with the other widthwise end 84U of the base tape 8U.

[0072] 7A, when the core tape 9L comes into contact with the other end 84U of the base tape 8U, the pulling force involved in peeling it off is concentrated at points P1, P1 where both ends in the width direction (left-right direction in the figure) of the core tape 9L intersect with the other end 84U in the width direction (up-down direction in the figure) of the base tape 8U. This pulling force acts in the longitudinal direction (up-down direction in the figure) of the core tape 9L, and acts on the base tape 8U in the width direction of the base tape 8U.

[0073] 7A, in the longitudinal direction of the core tape 9L, from the intersections P1, P1 toward the overlapping region 9Lb (upper side in the figure), the thickness increases by the amount that the base tape 8U overlaps the core tape 9L, thereby increasing the strength. Therefore, in the overlapping region 9Lb of the core tape 9L, resistance from the base tape 8U causes the core tape 9L to get caught when peeled off, making it easier for the core tape 9L to be torn. In the following explanation, we will use as an example a break starting from the intersection P1 on one side in the width direction of the core tape 9L (right side in the figure).

[0074] In this embodiment, as shown in (b) of Figure 6, by applying H-type bonding, the straight lines Ly1 and Ly2 passing through the third and fourth break guide lines 3U and 4U of the packing tape 7U are aligned with the straight lines Lx1 and Lx2 passing through the first and second break guide lines 1L and 2L of the packing tape 7L.

[0075] 7B, the tensile force concentrated at the intersection P1 causes the base tape 8U to break between the intersection P1 and the third break induction line 3U, which is a region of relatively low strength (arrow a1). The break that reaches the third break induction line 3U passes through the third break induction line 3U, making it easier to progress in the width direction (up and down in the drawing) of the base tape 8U.

[0076] When the peeling position of the core tape 9L passes the third break guide line 3U (upper side in the figure), the base tape 8U is broken between the third break guide line 3U and the step D (arrow b1) in response to the peeling of the core tape 9L. The step D is a step formed at the boundary between the packaging tape 7U and the core tape 9L.

[0077] The step D between the base tape 8U and the core tape 9L is oriented along the line Ly3. The line Ly3 is a straight line that runs along the width direction of the base tape 8U. The break that reaches the step D from the third break guide line 3U progresses along the step D in the width direction of the base tape 8U (arrow c).

[0078] If the fourth break induction wire 4U is closer to the intersection P1 than the third break induction wire 3U, the strength between the intersection P1 and the fourth break induction wire 4U is lower. Therefore, the tensile force concentrated at the intersection P1 causes a break between the intersection P1 and the fourth break induction wire 4U (arrow a2). The break that reaches the fourth break induction wire 4U passes through the fourth break induction wire 4U, making it easier to progress in the width direction (up and down in the figure) of the base tape 8U.

[0079] When the peeling position of the core tape 9L passes the fourth break guiding line 4U (upper side in the figure), the base tape 8U breaks along the fourth break guiding line 4U and the step D between the base tape 8U and the core tape 9L (arrow b2) in response to the peeling of the core tape 9L. The break that reaches the step D from the fourth break guiding line 4U progresses along the step D in the width direction of the base tape 8U (arrow c).

[0080] In this way, when a pulling force is applied to the base tape 8U from the core tape 9L, the third breakage induction wire 3U and the fourth breakage induction wire 4U induce breakage in the base tape 8U, making it difficult to peel the core tape 9L even in the overlapping region 9Lb where the strength is increased.

[0081] Here, the third break guide wire 3U and the fourth break guide wire 4U are formed at positions offset from each other when viewed in the longitudinal and width directions of the packing tape 7U. Therefore, the strength of the base tape 8U can be maintained more than when, for example, the third break guide wire 3U and the fourth break guide wire 4U are formed at positions overlapping when viewed in at least one of the longitudinal and width directions. As a result, the base tape 8U attached to the cardboard box 100 is less likely to break due to, for example, an impact during transportation, but is broken when an external force greater than the impact during transportation, such as a tensile force acting from the core tape 9L, is applied to the base tape 8U.

[0082] The third and fourth break induction wires 3U and 4U are alternately arranged in the longitudinal direction when viewed from the width direction of the packing tape 7U. This reduces the distance Dx (see FIG. 2A) between the third and fourth break induction wires 3U and 4U adjacent to each other in the longitudinal direction, making it easier to induce breakage when a tensile force is applied from the core tape 9L.

[0083] As shown in FIG. 7C, when the overlapping region 9Lb of the core tape 9L is peeled off to allow the breakage of the base tape 8U to progress (arrow c), it comes into contact with the other end 94U in the width direction of the core tape 9U.

[0084] 7A, when the core tape 9L comes into contact with the other end 94U of the core tape 9U, the pulling force involved in the peeling is concentrated at the intersections P2, P2 between the core tape 9L and the other end 94U of the core tape 9U. This pulling force acts on the core tape 9U in the width direction of the core tape 9U.

[0085] In the longitudinal direction of the core tape 9L, from the intersections P2, P2 toward the overlapping region 9La (upper side in the figure), the thickness is further increased by the amount that the base tape 8U and core tape 9U overlap the core tape 9L, thereby increasing its strength. Therefore, even in the overlapping region 9La of the core tape 9L, the resistance acting from the base tape 8U and core tape 9U makes it easy for the core tape 9L to get caught or to be cut when peeled off.

[0086] In this embodiment, as shown in (b) of Figure 6, by applying H-type pasting, the second slit 12U and the third slit 13U of the first break induction line 1U, which are oriented along the straight lines Lp and Lq, have components oriented along the straight lines Lx1 and Lx2 passing through the first and second break induction lines 1L and 2L of the packing tape 7L.

[0087] As a result, as shown in (c) of Figure 7, when a tensile force is concentrated at the intersection P2 at the other end 94U of the core tape 9U, the area between the intersection P2 and the third slit 13U, which is a relatively low strength area, is broken (arrow d).

[0088] The breakage that reaches the third slit 13 propagates along the third slit 13U in the width direction of the core tape 9U. Furthermore, the breakage starts at the intersection 15U between the third slit 13U and the first slit 11U and propagates in the direction of a straight line Ly4 (arrow e). The straight line Ly4 is a straight line that runs along the width direction of the core tape 9U.

[0089] The breakage progressing along the straight line Ly4 reaches the intersection 15U' of the first breakage guide line 1U', which is located on the opposite side (upper side in the figure) of the widthwise middle line Xc of the core tape 9U. The breakage that has reached the intersection 15U' progresses widthwise through the core tape 9U along the third slit 13U'.

[0090] When the peeling position of the core material tape 9L exceeds the first breakage guide line 1U' (upper side in the figure), the core material tape 9L is peeled and the area between the third slit 13U' and the step portion D is broken (arrow f).

[0091] The break that reaches the step D from the first break guide wire 1U' advances along the step D in the width direction of the base tape 8U (arrow g) and finally reaches one end 83U of the base tape 8U (see FIGS. 7A and 8B). As a result, the packing tape 7U is cut in the longitudinal direction by the core tape 9L.

[0092] In this manner, in the present embodiment, even when the packing tapes 7L and 7U are H-attached, peeling off the core tape 9L of the packing tape 7L encourages the packing tape 7U to break from the first break guide wire 1U, the third break guide wire 3U, and the fourth break guide wire 4U (see FIG. 8B). Therefore, when opening the cardboard box 100 to which the packing tape 7L is H-attached, even if the core tape 9L is first peeled off, the packing tape 7U is less likely to interfere with the peeling.

[0093] 8(a), in the case of H-type application, a packing tape 7U' is also provided on the other end 7b of the packing tape 7L in the longitudinal direction. When the core tape 9L is peeled off from the one end 7a, it comes into contact with the packing tape 7U' at the other end 7b. Although not shown, the packing tape 7U' also has first breakage guide wire 1U, third breakage guide wire 3U, and fourth breakage guide wire 4U formed along the width direction, so that peeling off the core tape 9L from the packing tape 7L promotes breakage.

[0094] Therefore, by peeling the core tape 9L over the entire length from one end 7a to the other end 7b, the packing tapes 7U and 7U' attached to the one end 7a and the other end 7b can be cut in a single peeling motion. Note that even if multiple packing tapes 7U (not shown) are attached between the one end 7a and the other end 7b of the core tape 9L in the longitudinal direction to improve sealing performance, all of the packing tapes 7U can be cut in a single peeling motion.

[0095] As shown in FIG. 8B, after the core tape 9L is peeled off, the mating surfaces 104, 104 of the cardboard box 100 are covered with the remaining base tapes 8L, 8U and core tape 9U.

[0096] After the core tape 9L is peeled off, fracture surfaces 96U and 97U are formed on the packing tape 7U along the width direction of the packing tape 7U. The fracture surfaces 96U and 97U face each other with a gap in between in the longitudinal direction of the packing tape 7U. The mating surfaces 103 and 104 of the cardboard box 100 are exposed between the fracture surfaces 96U and 97U.

[0097] The packing tape 7U is provided with the core tape 9U oriented along the mating surface 104. An operator can tear the base tape 8U by grasping the fracture surfaces 96U and 97U and peeling the core tapes 9U away from each other. The tearing method in this case is the same as in the I-type tape (see FIG. 5(b)).

[0098] Here, the base tapes 8L have fifth break guide lines 5L, 5L at positions adjacent to the fracture surfaces 86L, ​​87L in the width direction of the base tapes 8L, 8L, respectively. In the H-attached state, the straight line Ly1 passing through the fifth break guide lines 5L, 5L is aligned with the straight lines Lx1, Lx2 passing through the first and second break guide lines 1U, 2U.

[0099] A plurality of fifth break induction wires 5L are provided over the entire longitudinal length of the base tapes 8L, 8L. Therefore, the fifth break induction wires 5L are located in the regions of the base tapes 8L, 8L where the core tapes 9U, 9U overlap.

[0100] Therefore, when the fracture surfaces 96U, 97U are pinched and the core tapes 9U, 9U are peeled away from each other, the fracture surfaces 86L, ​​87L of the base tape 8L can also be pinched and peeled away in the area where the core tapes 9U, 9U overlap. As a result, as the core tapes 9U, 9U are peeled away, the base tapes 8L, 8L are encouraged to break in the direction along the fifth fracture guide lines 5L, 5L. This allows the mating surfaces 104, 104 to be opened.

[0101] As described above, the packaging tape 7 according to this embodiment has the following configuration. (1) The packaging tape 7 includes a base tape 8 (first strip-shaped member) and a core tape 9 (second strip-shaped member) provided on one surface 81 of the base tape 8 in the thickness direction. The core tape 9 is provided along the longitudinal direction of the base tape 8 between one end 83 and the other end 84 in the width direction of the base tape 8. A first break induction wire 1 is formed in a region Ra (first region) where the base tape 8 and the core tape 9 overlap. A second break induction wire 2 and a third break induction wire 3 are formed in a region Rb (second region) where the base tape 8 and the core tape 9 do not overlap. The first break induction wire 1 and the second break induction wire 2 are provided in the longitudinal direction. The third break induction wire 3 is provided in the width direction. In the width direction, the second break induction wire 2 is located closer to the first break induction wire 1 than the third break induction wire 3. In the first break induction wire 1, the second slits 12 and the third slits 13 located at both ends in the longitudinal direction are located closer to the second break induction wire 2 than the first slit 11 located in the center. The second slits 12 and the third slits 13 are inclined in a direction such that the longitudinal separation distance L1 increases as they approach the second break induction wire 2. The first break induction wire 1, the second break induction wire 2, and the third break induction wire 3 are each provided in plurality at intervals over the entire length in the longitudinal direction.

[0102] For example, if the peeling direction of the core tape 9 is inclined relative to the longitudinal direction, the direction of fracture of the base tape 8 may deviate from the longitudinal direction. If the direction of fracture deviates, resistance during peeling increases, causing the tape to get caught midway or the core tape 9 to be cut, hindering smooth peeling. Therefore, by configuring the tape as described above, even if the direction of fracture deviates from the longitudinal direction in the I-attached packaging tape 7, the orientation is corrected by passing through the first fracture guiding wire 1. As a result, the fracture can be controlled to progress in the longitudinal direction between the first fracture guiding wire 1 and the second fracture guiding wire 2 in the width direction. Furthermore, with the above-described configuration, when the core tape 9L of the packing tape 7L is peeled off in the H-attached packing tapes 7L and 7U, a break is induced in the base tape 8U of the packing tape 7U by the third break guiding line 3U near the intersection P1 with the core tape 9L (arrow a1 in FIG. 7B). Furthermore, a break is induced in the core tape 9U of the packing tape 7U by the second slit 12 or the third slit 13 of the first break guiding line 1U near the intersection P2 with the core tape 9L (arrow d in FIG. 7C). This allows the direction of breakage to be controlled so that even if the core tape 9L is peeled off first in the H-attached packing tapes 7L and 7U, the peeling is not hindered by the packing tape 7U.

[0103] (3) In the region Rb (second region) where the base tape 8 and the core tape 9 do not overlap, a fourth break induction wire 4 is further formed along the width direction. The fourth break induction wire 4 is provided in the width direction between the second break induction wire 2 and the third break induction wire 3. The third break induction wire 3 and the fourth break induction wire 4 are provided on one end 83 and the other end 84 of the base tape 8 in the width direction, respectively. The third break induction wire 3 and the fourth break induction wire 4 are provided at positions offset from each other in the longitudinal and width directions.

[0104] For example, if the third break guide wire 3 and the fourth break guide wire 4 are formed in overlapping positions when viewed in at least one of the longitudinal and width directions, the strength of the one end 83 and the other end 84 of the base tape 8 will be reduced. As a result, the packing tape 7 may be cut during unwinding when pulled out from the rolled portion. Furthermore, the packing tape 7 attached to the cardboard box 100 may be cut, for example, due to impact during transportation. Therefore, by configuring as described above, the strength of the base tape 8 can be maintained, thereby reducing the risk of the packing tape 7 being cut during unwinding when pulled out from the rolled portion. Furthermore, the risk of the packing tape 7 being cut due to impact during transportation can be reduced. Furthermore, the H-attached packing tapes 7L and 7U can be broken when an external force greater than the impact during transportation, such as a tensile force acting from the core tape 9L, is applied.

[0105] (4) When viewed from the width direction, the third break induction wires 3 and the fourth break induction wires 4 are arranged alternately in the longitudinal direction.

[0106] With this configuration, the distance between adjacent break guide wires in the longitudinal direction (the distance Dx between the third break guide wire 3 and the fourth break guide wire 4 (see FIG. 2A)) can be reduced. This makes it easier to induce breakage in the packing tape 7 when the packing tape 7 is pulled out from the rolled portion and cut. Furthermore, when a pulling force is applied from the core tape 9L to the H-attached packing tapes 7L and 7U, breakage in the packing tape 7U is easily induced.

[0107] (5) A fifth break induction wire 5 is further formed along the width direction in the region Rb (second region) where the base tape 8 and the core tape 9 do not overlap. The fifth break induction wire 5 is provided in the width direction between the second break induction wire 2 and the fourth break induction wire 4. In the width direction, the distance Dy3 between the fifth break induction wire 5 and the second break induction wire 2 is narrower than the distance Dy2 between the fifth break induction wire 5 and the fourth break induction wire 4.

[0108] When the core tape 9 is peeled off, two base tapes 8, 8 separated in the width direction remain on the cardboard box 100. Therefore, when opening the cardboard box 100, it may be necessary to cut the base tape 8 remaining on the cardboard box 100. Therefore, by configuring as described above and forming the fifth break induction line 5 on the second break induction line 2 side of the region Rb in the width direction, the base tapes 8, 8 remaining on the cardboard box 100 are induced to break from the fracture surfaces 86, 87 side. This allows the base tape 8 remaining on the cardboard box 100 to be easily cut.

[0109] (6) The fifth break induction wire 5 is provided on the straight line Ly1 passing through the third break induction wire 3 in the width direction.

[0110] With this configuration, the fifth break guide wire 5 is provided at a position farthest from the third and fourth break guide wires 3 and 4 in the width direction, so that the strength of the packing tape 7 is less likely to decrease.

[0111] (Modification 1) Fig. 9 is a diagram illustrating a packing tape 7A according to Modification 1. In this embodiment, the shape of the first break guide wire 1 is illustrated as being composed of three straight lines (first slit 11, second slit 12, and third slit 13), but is not limited to this. For example, as shown in Fig. 9, the shape of the first break guide wire 1A may be an arc that opens toward the second break guide wire 2 in the width direction.

[0112] This also makes it possible to control the direction of tearing when opening the packaging tape 7A that has been I- or H-attached to the cardboard box 100.

[0113] In the above-described embodiment and modification 1, the packaging tapes 7 and 7A are configured from the base tape 8 and the core tape 9, but the present invention is not limited to this. For example, a packaging tape 7B may be used that does not include the core tape 9.

[0114] FIG. 10 is a diagram illustrating a packaging tape 7B according to Modification 2. FIG. 10(a) is a diagram illustrating the packaging tape 7B as viewed from the thickness direction. FIG. 10(b) is a schematic diagram of the A-A cross section of FIG. 10(a). FIG. 11 is a diagram illustrating an example of use of the packaging tape 7B according to Modification 2. FIG. 11(a) is a diagram illustrating the rupture of the packaging tape 7B applied in an I-type application. FIG. 11(b) is a diagram illustrating the rupture of the packaging tape 7B applied in an H-type application. Note that in FIGS. 10 and 11, the non-adhesive portions 89 are cross-hatched to make the position of the non-adhesive portions 89 easier to understand. In the following description, the same reference numerals are used for components similar to those in the embodiment, and detailed description thereof will be omitted.

[0115] 10(b), the packaging tape 7B according to the second modification is composed only of a base tape 8A (strip-shaped member). The base tape 8A has a strip-shaped base portion 80 and an adhesive layer 85A (adhesive portion) provided on one surface 81 of the base portion 80 in the thickness direction. The adhesive layer 85A is provided on one end 83 side and the other end 84 side of the base portion 80 in the width direction. The adhesive layer 85A on the one end 83 side and the adhesive layer 85A on the other end 84 side are provided with an interval between them in the width direction (left-right direction in the figure) of the base tape 8A.

[0116] In the region between the adhesive layers 85A, 85A in the width direction, one surface 81 of the base 80 is exposed. The region between the adhesive layers 85A, 85A in the width direction is a non-adhesive portion 89 that does not have adhesiveness. The adhesive layers 85A, 85A and the non-adhesive portion 89 are provided over the entire length of the base tape 8A in the longitudinal direction. Note that the non-adhesive portion 89 may be provided with a layer of a release agent (release layer) whose main component is silicone or the like.

[0117] 10A, when viewed in the thickness direction of the base tape 8A (the front-to-rear direction in the drawing), the midline of the non-adhesive portion 89 in the width direction coincides with the midline Xc of the base tape 8A. The width W89 of the non-adhesive portion 89 in the width direction is set to a width that approximately matches the width W9 of the core tape 9 (see FIG. 1) (W89≈W9).

[0118] 10(a) and 10(b), the packaging tape 7B is divided into a region Rc having a non-adhesive portion 89 and a region Rd having an adhesive layer 85A in the base tape 8A. In the width direction, the region Rd is provided on one side of the region Rc (the region without the adhesive layer 85A) and the other side. In the packaging tape 7B according to the second modification, the region Rc having the non-adhesive portion 89 (the region without the adhesive layer 85A) constitutes the first region. The region Rd having the adhesive layer 85A constitutes the second region.

[0119] As shown in (a) of Figure 10, in the packaging tape 7B, when viewed from the thickness direction, the first break induction wire 1 is provided in region Rc, and the second break induction wire 2 to the fifth break induction wire 5 are provided in region Rd.

[0120] 10(b), in region Rc, first break induction wire 1 penetrates base 80 in the thickness direction. In region Rd, second break induction wire 2 to fifth break induction wire 5 penetrate both base 80 and adhesive layer 85A in the thickness direction. Note that the shapes and positional relationships of first break induction wire 1 to fifth break induction wire 5 in packing tape 7B when viewed from the thickness direction are similar to those of first break induction wire 1 to fifth break induction wire 5 in packing tape 7 according to the embodiment (see FIG. 2(a)), and therefore detailed description thereof will be omitted.

[0121] The non-adhesive portion 89 of the packing tape 7B does not have the adhesive layer 85A and is therefore not directly adhered to the cardboard box 100. Therefore, when the packing tape 7B is attached to the cardboard box 100, the non-adhesive portion 89 easily separates from the cardboard box 100. Therefore, the non-adhesive portion 89 can be pinched at the end of the packing tape 7B in the longitudinal direction and pulled away from the cardboard box 100 in the longitudinal direction.

[0122] 11A, when opening a cardboard box 100 to which packing tape 7B is attached, the non-adhesive portion 89 is pulled and peeled in the longitudinal direction (shown by the white arrow in the figure). Similar to the packing tape 7 according to the embodiment, the base tape 8A breaks longitudinally between the lines Lx1 and Lx2 along the first break guide line 1 and the second break guide line 2. This ultimately causes the packing tape 7B to be cut to one side and the other side in the width direction.

[0123] As shown in Figure 11 (b), when opening a cardboard box 100 to which packing tape 7B is attached in an H-shaped manner, the non-adhesive portion 89L of the lower packing tape 7BL is peeled off in the longitudinal direction (shown by the hollow arrow in the figure). Similar to the packing tape 7U according to the above-described embodiment, the upper packing tape 7BU breaks along the third break guide line 3U and the fourth break guide line 4U in the directions of the straight lines Ly1 and Ly2 until it reaches the first break guide line 1U. Once it reaches the first break guide line 1U, the break continues along the second slit 12U and the third slit 13U in the directions of the straight lines Ly1 and Ly2 (the up-down direction in the figure). This ultimately causes the upper packing tape 7BU to break on one side and the other side in the longitudinal direction (the left-right direction in the figure).

[0124] In this way, the packaging tape 7B according to the second modification, like the packaging tape 7 according to the above-described embodiment, can reduce the risk of the non-adhesive portion 89 getting caught when peeled off or of the non-adhesive portion 89 being cut during peeling, thereby realizing smooth peeling. Therefore, the packaging tape 7B according to the second modification can reduce manufacturing costs by omitting the core tape 9, while also being able to control the direction of tearing.

[0125] Furthermore, unlike the above-described packaging tape 7, the packaging tape 7B does not include a core tape 9. Therefore, the packaging tape 7B has smaller variations in thickness in the thickness direction (the vertical direction in (b) of FIG. 10) than the packaging tape 7. Therefore, when the packaging tape 7B is provided in a roll wound around the outer periphery of the core material S (see FIG. 1), unevenness due to differences in thickness is less likely to appear on the surface of the packaging tape 7B. This allows the packaging tape 7B to be pulled out smoothly from the portion where it is wound in a roll.

[0126] The packaging tape 7B according to Modification 2 has the following configuration. (2) The packaging tape 7B has a base tape 8A (strip-shaped member) having an adhesive layer 85A (adhesive portion) provided on one surface 81 in the thickness direction of a base 80. The adhesive layers 85A are provided at intervals on one end 83 and the other end 84 of the base tape 8A in the width direction, and are also provided along the longitudinal direction of the base tape 8A. A non-adhesive portion 89 having no adhesiveness is provided between the adhesive layers 85A, 85A in the width direction. A first break induction wire 1 is formed in a region Rc (first region) of the base tape 8A where the non-adhesive portion 89 is provided. A second break induction wire 2 and a third break induction wire 3 are formed in regions Rd, Rd (second region) of the base tape 8A where the adhesive layers 85A, 85A are provided. The first break induction wire 1 and the second break induction wire 2 are arranged in the longitudinal direction. The third break induction wire 3 is arranged in the width direction. In the width direction, the second break induction wire 2 is arranged closer to the first break induction wire 1 than the third break induction wire 3. In the first break induction wire 1, the second slits 12 and the third slits 13 located at both ends in the longitudinal direction are located closer to the second break induction wire 2 than the first slit 11 located in the center. The second slits 12 and the third slits 13 are inclined in a direction such that the longitudinal separation distance L1 increases as they approach the second break induction wire 2. The first break induction wire 1, the second break induction wire 2, and the third break induction wire 3 are each arranged at intervals over the entire length in the longitudinal direction.

[0127] This configuration reduces manufacturing costs and allows for control of the direction of fracture progression.

[0128] As described above, the embodiments and modifications of the present invention have been described. The present invention is not limited to these embodiments and modifications. The above-described embodiments and modifications may be combined in any manner.

[0129] Although the embodiments of the present invention have been described above, the above-described embodiments are merely for the purpose of explaining the present invention and do not limit the scope of the present invention. Appropriate modifications can be made within the scope of the technical concept of the invention.

[0130] 1: First break guide wire 2: Second break guide wire 3: Third break guide wire 4: Fourth break guide wire 5: Fifth break guide wire 7, 7A, 7B: Packaging tape 8: Base tape (first belt-shaped member) 8A: Base tape (belt-shaped member) 9: Core tape (second belt-shaped member) 11: First slit (center) 12: Second slit (end) 13: Third slit (end) 80: Base 81: One surface 85, 85A: Adhesive layer (adhesive portion) 89: Non-adhesive portion 100: Cardboard box 103: Mating surface 104: Mating surface Lp: Straight line Lq: Straight line Lx1 to Lx5: Straight lines Ly1 to Ly2: Straight lines Ra: Region (first region) Rb: Region (second region) Rc: Region (first region) Rd: Region (second region) Xc: Intermediate line

Claims

1. A device comprising: a first belt-shaped member; and a second belt-shaped member provided on one surface of the first belt-shaped member in the thickness direction, wherein the second belt-shaped member is provided along the longitudinal direction of the first belt-shaped member between one end and the other end in the width direction of the first belt-shaped member; a first break induction wire formed in a first region where the first belt-shaped member and the second belt-shaped member overlap; and a second break induction wire and a third break induction wire formed in a second region where the first belt-shaped member and the second belt-shaped member do not overlap; the first break induction wire and the second break induction wire are provided in a direction along the longitudinal direction; the third break induction wire is provided in a direction along the width direction; and the second break induction wire is provided on the first break induction wire side of the third break induction wire in the width direction; The first break guiding wire has both ends in the longitudinal direction positioned closer to the second break guiding wire than the center, the both ends are inclined in a direction such that the distance between them in the longitudinal direction increases as they approach the second break guiding wire, and the first break guiding wire, the second break guiding wire, and the third break guiding wire are each provided at intervals over the entire length of the packing tape.

2. A belt-shaped member having an adhesive portion on one surface in the thickness direction, the adhesive portion being spaced apart on one end side and the other end side in the width direction of the belt-shaped member and being arranged along the longitudinal direction of the belt-shaped member; a first break induction wire formed in a first region of the belt-shaped member where the adhesive portion is not provided, and a second break induction wire and a third break induction wire formed in a second region of the belt-shaped member where the adhesive portion is provided; the first break induction wire and the second break induction wire are arranged in a direction along the longitudinal direction, and the third break induction wire is arranged in a direction along the width direction, and in the width direction, the second break induction wire is arranged closer to the first break induction wire than the third break induction wire, and both ends of the first break induction wire in the longitudinal direction are located closer to the second break induction wire than the center, The packaging tape is characterized in that the both end portions are inclined in a direction in which the distance between them in the longitudinal direction increases as they approach the second break guide line, and the first break guide line, the second break guide line, and the third break guide line are each provided at intervals over the entire length of the packaging tape in the longitudinal direction.

3. A packaging tape according to claim 1 or claim 2, wherein a fourth break guiding line is further formed in the second region along the width direction, the fourth break guiding line is arranged between the second break guiding line and the third break guiding line in the width direction, and the third break guiding line and the fourth break guiding line are arranged at positions offset from each other in the longitudinal direction and the width direction.

4. The packaging tape according to claim 3, wherein, when viewed in the width direction, the third break guide wires and the fourth break guide wires are arranged alternately in the longitudinal direction.

5. A packaging tape according to claim 3, wherein a fifth break guide line is further formed in the second region along the width direction, and the fifth break guide line is provided between the second break guide line and the fourth break guide line in the width direction.

6. Packaging tape according to claim 5, characterized in that the fifth break guide line is provided on a straight line passing through the third break guide line in the width direction.

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