Label sheet

Abstract

To provide a label sheet that can be reduced in thickness and can reduce ruggedness to be felt on the finger.SOLUTION: A label sheet comprises: a substrate having a first surface allowing printing thereon, and a second surface directed opposite to the first surface; an adhesive layer having a third surface facing the second surface, and a fourth surface directed opposite to the third surface; and a peeling layer having a fifth surface facing the fourth surface, and a sixth surface directed opposite to the fifth surface. The peeling layer has a non-adhesive part bonded to part of the fourth surface, and a peeling part bonded to a position different from the non-adhesive part of the fourth surface. When the peeling layer is peeled off from the fourth surface, the peeling part is separated from the substrate, adhesive layer, and non-adhesive part. The adhesive layer is configured to be bonded to an adherend body in a state where the non-adhesive part is interposed between the fourth surface and the adherend body. The distance from the fifth surface to the sixth surface in the non-adhesive part is shorter than the distance from the first surface to the second surface in the substrate.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present disclosure relates to label sheets. [Background technology]

[0002] Label sheets that can be printed on a printer and can be used as labels for various purposes, such as address labels, sender labels, and labels for displaying contents, are used. When manually pasting, it is difficult to position the labels, and the pasting position may shift from the desired position or become distorted. On the other hand, when used as a label, it is required to maintain the state after pasting, so there is a problem that the labels will peel off after pasting if a removable adhesive is used. There has been a demand for a label sheet that does not affect the appearance after pasting as a label, is easy to position, and does not peel off easily after pasting.

[0003] Patent Document 1 describes a double-sided adhesive tape. The double-sided adhesive tape is used for adhesive application of hard decorative boards made of wood, stone, tiles, etc. The double-sided adhesive tape includes a support that serves as a tape core material, an adhesive layer, and a release paper. The support is made of a resilient foam such as polyethylene or polyurethane foam. The adhesive layer is made of a paper such as fine paper or glassine paper, the surface of which is laminated with polyethylene. The release paper is made of a polyethylene or polyester film surface coated with a release agent such as silicone resin. The release paper has cuts formed in a pattern that is circular, rectangular, or rectangular. When the release paper is peeled off, the patterned pattern remains on the adhesive layer as a protruding member. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 3066413 Summary of the Invention [Problem to be solved by the invention]

[0005] Incidentally, label sheets are sometimes printed by a printer. However, if the label sheet is thick, it may be difficult to feed the label sheet through the printer. The label sheet is attached to an adherend. There has been a demand for a configuration that allows easy positioning and does not affect the appearance, such as leaving a rough feeling, after the label sheet is attached to the adherend.

[0006] An object of the present disclosure is to provide a label sheet that is easy to position, while having little noticeable effect on the appearance after being attached to an adherend. [Means for solving the problem]

[0007] The label sheet according to the present disclosure is a label sheet to be attached to an adherend. The label sheet includes a substrate having a first surface on which printing is possible and a second surface facing the opposite side to the first surface, an adhesive layer having a third surface facing the second surface and a fourth surface facing the opposite side to the third surface, and a release layer having a fifth surface facing the fourth surface and a sixth surface facing the opposite side to the fifth surface. The release layer has a non-adhesive portion adhered to a part of the fourth surface, and a release portion adhered to a position different from the non-adhesive portion of the fourth surface. When the release layer is peeled off from the fourth surface, the release portion is separated from the substrate, the adhesive layer, and the non-adhesive portion. The adhesive layer is configured to be attached to the adherend with the non-adhesive portion interposed between the fourth surface and the adherend. The distance from the fifth surface to the sixth surface in the non-adhesive portion is shorter than the distance from the first surface to the second surface in the substrate. Effect of the Invention

[0008] According to the present disclosure, it is possible to provide a label sheet that is easy to position, while at the same time making it difficult to notice the effect on the appearance after it is affixed to an adherend. [Brief description of the drawings]

[0009] [Figure 1]FIG. 1 is a diagram showing a label sheet according to an embodiment. [Diagram 2] FIG. 2 is a diagram showing the label sheet of FIG. 1 attached to an adherend. [Diagram 3] Fig. 3(a) shows a state in which one label sheet has been peeled off, and Fig. 3(b) shows the label sheet after it has been peeled off. [Figure 4] Fig. 4(a) is a cross-sectional view showing the label sheet before it is peeled off, Fig. 4(b) is a cross-sectional view showing the label sheet after it has been peeled off, and Fig. 4(c) is a cross-sectional view showing the label sheet attached to an adherend. [Diagram 5] FIG. 5 is an enlarged cross-sectional view of the substrate, adhesive layer, and non-adhesive portion of a label sheet attached to an adherend. [Figure 6] FIG. 6 is a diagram showing an example of a cut portion formed in the release layer of the label sheet of FIG. [Figure 7] FIG. 7 is an enlarged view of the cut portion of FIG. [Figure 8] FIG. 8 is a cross-sectional view showing a label sheet according to a modified example. [Figure 9] 9(a) and (b) are diagrams for explaining an experiment according to the embodiment. [Figure 10] FIGS. 10(a) and (b) are diagrams for explaining an experiment according to the embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Hereinafter, an embodiment of the label sheet according to the present disclosure will be described with reference to the drawings. In the description of the drawings, the same or corresponding elements are given the same reference numerals, and duplicated descriptions will be omitted as appropriate. The drawings may be partially simplified or exaggerated for ease of understanding, and the dimensional ratios and the like are not limited to those shown in the drawings.

[0011] A "label sheet" is a sheet on which printing can be performed. A "label sheet" may be a printed sheet or a sheet before printing. "Printing" refers to transferring specific information (characters, symbols, etc.) or a design. "Printing" includes printing, which will be described later. "Substrate" refers to the object to which the label sheet is affixed. Typically, "substrate" includes articles, merchandise, goods, containers, and bags to which the label sheet is affixed. "Sheet" or "sheet-like" refers to a state in which something is spread out two-dimensionally.

[0012] For example, a label sheet comprises a substrate, an adhesive layer, and a release layer. The "substrate" refers to the sheet-like portion that serves as the base of the label sheet. The "adhesive layer" refers to the portion that is attached to an adherend. The "release layer" refers to the portion that is attached to the adhesive layer and that can be peeled off from the adhesive layer.

[0013] The release layer has a non-adhesive portion that is not peeled off from the adhesive layer but is attached to the adhesive layer and is not adhered to the adherend, and a release portion that is peeled off from the adhesive layer. The non-adhesive portion is interposed between the adhesive layer and the adherend and serves to weaken the adhesive force of the label sheet to the adherend. The release portion is the portion that is peeled off from the adhesive layer before the label sheet is attached to the adherend.

[0014] FIG. 1 is a diagram showing a label sheet 1 according to the present embodiment. For example, the label sheet 1 can be used as a label for various purposes, such as an address label, a sender label, or a label showing contents, by printing desired characters, designs, etc. on a label paper 10. The label paper 10 has multiple label sheets 1, and a slit 10d is formed between the multiple label sheets 1. In the label paper 10, the label sheets 1 can be peeled off one by one along the slit 10d. The slit 10d penetrates the label sheet 1 but does not penetrate the peeling layer below it, so that one label paper 10 can be composed of multiple label sheets 1. For example, the label paper 10 has a rectangular shape with a pair of long sides 10b extending along a first direction D1 and a pair of short sides 10c extending along a second direction D2 that intersects with the first direction D1 (for example, perpendicular to the first direction D1). The pair of long sides 10b are aligned along the second direction D2, and the pair of short sides 10c are aligned along the first direction D1.

[0015] For example, on label paper 10, multiple label sheets 1 are lined up in a first direction D1 and also lined up in a second direction D2. As an example, multiple label sheets 1 are arranged in a grid pattern on label paper 10. For example, the label sheets 1 are printed. In this case, the label paper 10 is passed through a printer, and the label sheets 1 are printed (printed) by the printer. As such, since the label sheets 1 are printed (printed) by a printer, it is desirable for them to be relatively thin.

[0016] The label sheet 1 has, for example, a printing section 1b on which information 1c is printed. In this case, the label sheet 1 is attached to the adherend with the printing section 1b facing upward (the side opposite to the adherend). FIG. 2 shows an adherend 2 as an example. The label sheet 1 is attached to the adherend 2. For example, the adherend 2 is a paper envelope. The information 1c printed on the printing section 1b is, for example, text information. As an example, the information 1c includes an address and a name (or the name of an organization). In this case, the label sheet 1 can be peeled off from the label paper 10 and attached to the adherend 2, which is an envelope. However, the adherend may be something other than the adherend 2, which is an envelope, and the type of the adherend is not particularly limited. For example, the adherend may be a glass bottle.

[0017] Figure 3(a) shows label paper 10 with one label sheet 1 peeled off. Figure 3(b) shows one label sheet 1 peeled off from label paper 10. As shown in Figure 3, label sheet 1 has release layer 11, a portion of which remains on label paper 10 when label sheet 1 is peeled off, and adhesive layer 12, which peels off from release layer 11. Release layer 11 has release portion 14, which remains as label paper 10 when label sheet 1 is peeled off, and non-adhesive portion 15, which is adhered to adhesive layer 12 when label sheet 1 is peeled off.

[0018] For example, when viewed along a third direction D3, which is a direction intersecting both the first direction D1 and the second direction D2, the label sheet 1 has a rectangular shape. The third direction D3 is the thickness direction of the label sheet 1. As an example, the label sheet 1 has a pair of short sides 1f extending along the first direction D1 and a pair of long sides 1g extending along the second direction D2. The pair of short sides 1f are aligned along the second direction D2, and the pair of long sides 1g are aligned along the first direction D1. For example, when viewed along the third direction D3, the outer shape of the adhesive layer 12 is the same as the outer shape of the label sheet 1 as a whole.

[0019] Fig. 4(a) is a cross-sectional view showing the label sheet 1 being peeled off from the label paper 10. Fig. 4(b) is a cross-sectional view showing the label sheet 1 peeled off from the label paper 10. Fig. 4(c) is a cross-sectional view showing the label sheet 1 peeled off from the label paper 10 and attached to an adherend 2. Fig. 4(a), (b), and (c) each show a cross-section of the label sheet 1 and adherend 2 when cut along a plane extending in both the second direction D2 and the third direction D3.

[0020] As shown in FIG. 3 and FIG. 4, the label sheet 1 according to this embodiment has a substrate 13 including a printed portion 1b on which information 1c is printed. For example, the substrate 13 may have an ink-receiving layer. The ink-receiving layer receives ink from an inkjet printer. The substrate 13 has a first surface 13b on which printing (printing) is possible, and a second surface 13c facing the opposite side to the first surface 13b. The first surface 13b and the second surface 13c each extend in both the first direction D1 and the second direction D2. The substrate 13 has a thickness in the third direction D3.

[0021] For example, the substrate 13 is made of paper. In this case, the substrate 13 is made of fibers including pulp. The substrate 13 may contain a sizing agent, and in this case, the substrate 13 is a waterproof paper having water resistance. The sizing agent is made of a resin material such as a styrene resin, a urethane resin, an acrylic resin, a rosin, a phenol resin, or a modified resin thereof. The substrate 13 may be a synthetic paper or a synthetic fiber paper containing a synthetic resin such as a polymer fiber such as a polypropylene fiber, a polyester fiber, or a polyethylene fiber. The substrate 13 may contain, for example, paraffin, oil, a silicone resin, a melamine resin, or a urethane resin. The substrate 13 may have a nonwoven fabric structure in which fibers are irregularly entangled. Examples of materials and compositions of the substrate 13 have been described above. However, the materials and compositions of the substrate 13 are not limited to the above examples.

[0022] The adhesive layer 12 is adhered to the second surface 13c of the base material 13. The adhesive layer 12 is a layer that adheres the label sheet 1 to the surface 2b of the adherend 2. The adhesive layer 12 is made of, for example, an acrylic adhesive. However, the adhesive layer 12 may be made of a rubber adhesive or a silicone adhesive, and the material of the adhesive layer 12 is not particularly limited. The adhesive layer 12 has a thickness in the third direction D3. The adhesive layer 12 has a third surface 12b facing the second surface 13c of the base material 13 and a fourth surface 12c facing away from the third surface 12b. Each of the third surface 12b and the fourth surface 12c extends in both the first direction D1 and the second direction D2.

[0023] The release layer 11 extends in both the first direction D1 and the second direction D2 and has a thickness in the third direction D3. The release layer 11 has a fifth surface 11b facing the fourth surface 12c of the adhesive layer 12 and a sixth surface 11c facing the opposite side to the fifth surface 11b. Each of the fifth surface 11b and the sixth surface 11c extends in both the first direction D1 and the second direction D2. The release layer 11 is, for example, a release paper containing a silicone resin. However, the release layer 11 may be composed of a polyester film, a polypropylene film, or a polyethylene film, and the material of the release layer 11 is not particularly limited.

[0024] As described above, the peeling layer 11 has a peeling portion 14 that remains as the label paper 10, and a non-adhesive portion 15 that separates from the label paper 10 together with the substrate 13 and the adhesive layer 12. For example, the non-adhesive portion 15 is a portion that remains in the form of a dot on the adhesive layer 12 when separated from the peeling portion 14. For example, the peeling layer 11 has a plurality of non-adhesive portions 15. For example, the plurality of non-adhesive portions 15 are dispersedly disposed in the peeling layer 11. The term "dispersedly disposed" includes, for example, a state in which a plurality of non-adhesive portions 15 are disposed symmetrically with respect to a predetermined point or line on the peeling layer 11, a state in which a plurality of non-adhesive portions 15 are disposed in a lattice pattern, a state in which a plurality of non-adhesive portions 15 are disposed in a staggered pattern, and a state in which a plurality of non-adhesive portions 15 are disposed in a concentric pattern.

[0025] In this embodiment, the non-adhesive portions 15 are arranged in a lattice pattern. In the release layer 11, the non-adhesive portions 15 are lined up along the first direction D1 and along the second direction D2. In the example of FIG. 3(b), five non-adhesive portions 15 are lined up along the first direction D1, and nine non-adhesive portions 15 are lined up along the second direction D2. However, the number and arrangement of the non-adhesive portions 15 are not limited to the above example and can be changed as appropriate.

[0026] The distance K1 from the fifth surface 11b to the sixth surface 11c in the non-adhesive portion 15 is shorter than the distance K2 from the first surface 13b to the second surface 13c in the substrate 13. That is, the length (thickness) of the non-adhesive portion 15 in the third direction D3 is shorter than the length of the substrate 13 in the third direction D3. The distance K1 corresponds to the thickness of the non-adhesive portion 15, and the distance K2 corresponds to the thickness of the substrate 13. However, if the non-adhesive portion 15 is thick (the length in the third direction D3 is long), the uneven feeling when the label sheet 1 is attached to the adherend 2 may become large. That is, the uneven feeling experienced by the finger when attaching the label sheet 1 to the adherend 2 with the finger may become large. However, as described above, if the thickness (distance K1) of the non-adhesive portion 15 is thinner than the thickness (distance K2) of the substrate 13, the uneven feeling to the finger when pressing the substrate 13 with the finger can be reduced.

[0027] The thickness (distance K1) of the non-adhesive portion 15 is, for example, the same as the thickness of the release portion 14. In this case, the thickness of the release layer 11 can be made uniform. However, the thickness of the non-adhesive portion 15 may be different from the thickness of the release portion 14. For example, the thickness of the release layer 11 is 1 μm or more and 100 μm or less (50 μm as an example). The thickness of the base material 13 is 5 μm or more and 150 μm or less (80 μm as an example).

[0028] The thickness of the label sheet 1 (the overall thickness of the label sheet 1) is 10 μm or more and 2 mm or less. However, the thickness of the label sheet 1 may be 20 μm or more, 50 μm or more, or 100 μm or more, or 1 mm or less, 500 μm or less, 200 μm or less, or 150 μm or less. As an example, the thickness of the label sheet 1 may be 120 μm or more and 130 μm or less. In this way, the thickness of the label sheet 1 and the thickness of each part of the label sheet 1 can be changed as appropriate.

[0029] The non-adhesive portion 15 is adhered to a part of the fourth surface 12c of the adhesive layer 12. The peel-off portion 14 is adhered to a position on the fourth surface 12c different from the non-adhesive portion 15 before the label sheet 1 is peeled off from the label paper 10. The peel-off layer 11 is peeled off from the fourth surface 12c of the adhesive layer 12. At this time, the base material 13, the adhesive layer 12, and the non-adhesive portion 15 are separated from the peel-off portion 14, and a hole 14b where the non-adhesive portion 15 was located is formed in the peel-off portion 14. The hole 14b is, for example, a through hole that penetrates the peel-off portion 14 in the third direction D3. The adhesive layer 12 is attached to the adherend 2 with the non-adhesive portion 15 interposed between the fourth surface 12c and the adherend 2.

[0030] FIG. 5 is an enlarged cross-sectional view of the substrate 13, the adhesive layer 12, the non-adhesive portion 15, and the adherend 2 in FIG. 4(c). As shown in FIG. 4 and FIG. 5, the adhesive layer 12 has an adhesive portion 16 that adheres to the adherend 2, and a non-adhesive portion 17 that does not adhere to the adherend 2. The non-adhesive portion 17 extends from the fifth surface 11b of the non-adhesive portion 15 to the surface 2b of the adherend 2. The adhesive portion 16 extends along both the first direction D1 and the second direction D2. The non-adhesive portion 17 extends obliquely with respect to a plane that extends along both the first direction D1 and the second direction D2. When viewed along the third direction D3, the adhesive portion 16 is located between a pair of non-adhesive portions 15, and the non-adhesive portion 17 is located between the non-adhesive portion 15 and the adhesive portion 16.

[0031] When label sheet 1 is attached to surface 2b of adherend 2, non-adhesive portion 15 is interposed between fourth surface 12c and adherend 2. This makes it easy to adjust the attachment position of label sheet 1 relative to adherend 2. In other words, the non-adhesive portion 15 prevents the adhesive strength of adhesive layer 12 to adherend 2 from becoming too strong, making it easy to adjust the position of label sheet 1 relative to adherend 2 even after label sheet 1 is lightly attached to adherend 2.

[0032] Furthermore, the presence of the non-adhesive portion 15 can prevent the label sheet 1 from being attached to an unintended position on the adherend 2. When the label sheet 1 is lightly pressed against the adherend 2, the non-adhesive portion 15, which is closer to the adherend 2 than the adhesive layer 12, comes into contact with the adherend 2, thereby reducing the adhesive force to the adherend 2. For example, even if the label sheet 1 is attached to a position slightly shifted from the desired position on the adherend 2, the label sheet 1 can be moved and reattached to the desired position. When the label sheet 1 is in the desired position, the label sheet 1 can be firmly attached to the adherend 2 by pressing the label sheet 1 with a finger. Furthermore, it is possible to adjust the ratio of the adhesive portion 16 (or the non-adhesive portion 17) to the entire adhesive layer 12 by changing the shape, size, number, or arrangement of the non-adhesive portion 15. By adjusting the ratio, the adhesive force of the adhesive layer 12 can be made variable.

[0033] FIG. 6 is a plan view showing the sixth surface 11c of the peeling layer 11 of the label sheet 1. As shown in FIG. 4, FIG. 5, and FIG. 6, the non-adhesive portion 15 is a cut portion 15A formed in a predetermined shape on the peeling layer 11 before the peeling layer 11 is peeled off from the fourth surface 12c of the adhesive layer 12. The adhesive portion 16 is provided between the plurality of cut portions 15A. The peeling layer 11 has a cut pattern which is a plurality of cut portions 15A formed in a predetermined shape. The cut portions 15A are formed in the peeling layer 11 by, for example, a metal blade. However, the cut portions 15A may be formed in the peeling layer 11 by a laser, and the means for forming the cut portions 15A in the peeling layer 11 is not particularly limited. When the peeling portion 14 is peeled off from the fourth surface 12c of the adhesive layer 12, the plurality of non-adhesive portions 15 formed in a predetermined shape remain on the fourth surface 12c.

[0034] For example, when viewed along the third direction D3, the release layer 11 (release portion 14) has a rectangular shape, similar to the entire label sheet 1. The sixth surface 11c of the release layer 11 has an outer edge 11g that includes, for example, a pair of short sides 11d extending along the first direction D1 and a pair of long sides 11f extending along the second direction D2. A plurality of cut portions 15A are formed in the release layer 11. The cut portions 15A are formed, for example, in a ring or frame shape, and the areas inside the cut portions 15A become the non-adhesive portions 15.

[0035] For example, the cut portions 15A are arranged in a dispersed manner in the peeling layer 11, similar to the non-adhesive portion 15. In this embodiment, the multiple cut portions 15A are arranged in a lattice pattern. In the peeling layer 11, the cut portions 15A are arranged along the first direction D1 and along the second direction D2. The peeling layer 11 has, for example, a non-forming region 11h in which the cut portions 15A are not formed, and a forming region 11j in which the cut portions 15A are formed. When viewed along the third direction D3, the non-forming region 11h has a ring-like or frame-like shape. The example of FIG. 6 shows an example in which the non-forming region 11h is frame-like. When viewed along the third direction D3, the non-forming region 11h is arranged so as to surround the forming region 11j. The non-forming region 11h is provided between the forming region 11j and the outer edge 11g of the peeling layer 11.

[0036] The portion of the adhesive layer 12 facing the non-forming region 11h becomes an adhesive portion 16 that adheres to the adherend 2 because no non-adhesive portion 15 remains when the peeling layer 11 is peeled off. The non-forming region 11h is formed in a frame shape, so that the adhesive layer 12 can be adhered to the adherend 2 in the frame-shaped portion, and the adhesive force in the frame-shaped portion can be secured. For example, the minimum value of the width of the non-forming region 11h is 4 mm or more. That is, the minimum value of the distance K3 from the outer edge 11g of the sixth surface 11c of the peeling layer 11 to the cut portion 15A is 4 mm or more. The minimum value of the distance K3 may be 4 mm or more and 100 mm or less. However, the minimum value of the distance K3 is not limited to the above value and can be changed as appropriate.

[0037] The ratio of the area of ​​the cut portion 15A to the area of ​​the sixth surface 11c of the release layer 11 correlates with the adhesive strength of the adhesive layer 12 to the adherend 2. For example, when the ratio of the area of ​​the cut portion 15A to the area of ​​the sixth surface 11c is equal to or greater than a certain ratio, the adhesive strength of the adhesive layer 12 to the adherend 2 is smaller than when the ratio of the area of ​​the cut portion 15A to the area of ​​the sixth surface 11c is not equal to or greater than the certain ratio. That is, the wider the cut portion 15A, the smaller the adhesive strength. For example, the ratio of the area of ​​the cut portion 15A to the area of ​​the sixth surface 11c of the release layer 11 is 0.01% or more and 51% or less, more preferably 1% or more and 30% or less, and more preferably 5% or more and 20% or less.

[0038] For example, the cuts 15A are arranged at equal intervals along the first direction D1 and at equal intervals along the second direction D2. The distance K4 (shortest distance) between two adjacent cuts 15A is, for example, 2 mm or more and 8 mm or less. FIG. 7 is an enlarged view of one cut 15A (non-adhesive portion 15). As shown in FIG. 6 and FIG. 7, when the length of the cut 15A in the first direction D1 is A and the length of the cut 15A in the second direction D2 is B (A and B are positive real numbers), 1≦(A / B)≦5 is satisfied.

[0039] The value of (A / B) may be 2 or less, or 3 or less. As an example, the cut portion 15A has a circular shape. In this case, the diameter of the cut portion 15A is, for example, 2 mm or more and 4 mm or less. However, the cut portion 15A may have a polygonal shape, an oval shape (including an elliptical shape), or a shape including straight lines and curves (for example, a sector shape). In this way, the shape of the cut portion 15A can be changed as appropriate.

[0040] Next, the effects obtained from the label sheet 1 according to this embodiment will be described in more detail. As shown in FIG. 4, the label sheet 1 includes a base material 13 having a first surface 13b on which printing is possible, an adhesive layer 12, and a release layer 11 attached to the base material 13 via the adhesive layer 12. The release layer 11 has a non-adhesive portion 15 attached to a part of the adhesive layer 12, and a release portion 14 attached to the adhesive layer 12 at a position different from the non-adhesive portion 15. The adhesive layer 12 is attached to the adherend 2 with the non-adhesive portion 15 interposed between the fourth surface 12c and the adherend 2. Therefore, the position of the label sheet 1 can be easily adjusted before the label sheet 1 is attached to the adherend 2 and when the label sheet 1 is lightly attached to the adherend 2. This makes it possible to prevent the label sheet 1 from being attached to an unintended position on the adherend 2.

[0041] Furthermore, the distance K1 from the fifth surface 11b to the sixth surface 11c in the non-adhesive portion 15 is shorter than the distance K2 from the first surface 13b to the second surface 13c in the base material 13. Therefore, the thickness of the non-adhesive portion 15 is small relative to the thickness of the base material 13, so that the label sheet 1 is prevented from becoming thick, and the label sheet 1 can be easily passed through a printer, so that printing on the label sheet 1 can be easily performed. Furthermore, since the non-adhesive portion 15 is thinner than the base material 13, the uneven feeling when the label sheet 1 is attached to the adherend 2 can be reduced, so that the discomfort of the finger when pressing the label sheet 1 against the adherend 2 with the finger can be reduced. As a result, the label sheet 1 can be easily attached to the adherend 2. The distance K1 from the fifth surface 11b to the sixth surface 11c in the non-adhesive portion 15 is shorter than the thickness of the base material 13, and may be 30 μm or more and less than 1 mm.

[0042] 4 and 6, the non-adhesive portion 15 may be a cut portion 15A formed in a predetermined shape in the release layer 11 before the release layer 11 is peeled off from the fourth surface 12c. In this case, when the adhesive layer 12 and the base material 13 are separated from the release layer 11, the adhesive layer 12 and the base material 13 to which the non-adhesive portion 15 is attached can be obtained, so that the label sheet 1 can be easily attached to the adherend 2 via the non-adhesive portion 15.

[0043] As described above, the minimum value of distance K3 from outer edge 11g of sixth surface 11c of release layer 11 to cut portion 15A may be 4 mm or more. In this case, the portion of adhesive layer 12 that was attached to the periphery of outer edge 11g of release layer 11 can be firmly attached to adherend 2 without interposing non-adhesive portion 15. As a result, peeling of label sheet 1 after it is attached to adherend 2 can be suppressed.

[0044] As described above, the ratio of the area of ​​cut portions 15A to the area of ​​sixth surface 11c of release layer 11 may be 0.01% or more and 51% or less, more preferably 1% or more and 30% or less, and more preferably 5% or more and 20% or less. In this case, the adhesive strength of label sheet 1 to adherend 2 can be high while facilitating position adjustment of label sheet 1 relative to adherend 2.

[0045] 6 and 7, the sixth surface 11c of the peel-off layer 11 extends in the first direction D1 and the second direction D2, and may satisfy 1≦(A / B)≦5, where A is the length of the cut portion 15A in the first direction D1 and B is the length of the cut portion 15A in the second direction D2. In this case, the cut portion 15A is less likely to have directionality, and the non-adhesive portion 15 can be easily separated from the peel-off portion 14 from any direction. This makes it even easier to attach the label sheet 1 to the adherend 2.

[0046] 4 and 5, label sheet 1 has multiple non-adhesive sections 15 (cut sections 15A), and adhesive layer 12 may have adhesive sections 16 that adhere to adherend 2 between the multiple non-adhesive sections 15. In this case, adhesive sections 16 that adhere to adherend 2 are formed between the multiple non-adhesive sections 15, thereby making it possible to increase the adhesive strength of label sheet 1 to adherend 2.

[0047] As mentioned above, the thickness of the label sheet 1 may be 2 mm or less. In this case, the label sheet 1 can be fed through the printer reliably, making it easy for the printer to print on the label sheet 1.

[0048] The above describes the embodiments of the label sheet according to the present disclosure. However, the label sheet according to the present disclosure is not limited to the above-mentioned embodiments, and may be further modified within the scope of the gist described in the claims. In other words, the shape, size, material, number, and arrangement of each part of the label sheet according to the present disclosure are not limited to the above-mentioned embodiments, and may be appropriately changed within the scope of the above-mentioned gist.

[0049] FIG. 8 is a cross-sectional view showing a label sheet 21 according to a modified example. A portion of the label sheet 21 has the same configuration as a portion of the label sheet 1 described above. Therefore, in the following, the description of the portions that overlap with the configuration of the label sheet 1 will be omitted as appropriate by using the same reference numerals. The label sheet 21 has a release layer 22 provided separately from the non-adhesive portion 15, instead of the release layer 11 having the release portion 14 with the hole 14b through which the non-adhesive portion 15 (the cut portion 15A) is passed. The release layer 22 does not have a cut pattern like the cut portion 15A described above. This label sheet 21 is attached to the adherend 2 with the base material 13, the adhesive layer 12, and the non-adhesive portion 15 peeled off from the release layer 22. This label sheet 21 also provides the same effects as the label sheet 1 described above.

[0050] Next, examples of the label sheet according to the present disclosure will be described. The present invention is not limited to the contents of the following examples. Several types of experiments were conducted on the label sheet according to the examples. These experiments will also be described below. As illustrated in FIG. 6, the following experiments used a label sheet 1 in which multiple circular cutouts 15A are arranged at equal intervals.

[0051] (Check the unevenness) First, an experiment was conducted to confirm the uneven feel of the film when attached to the adherend 2 by adjusting the thickness of the non-adhesive portion 15 and the thickness of the release layer 11. The results are shown in Table 1 below. In the results column of Table 1, "○" indicates that the unevenness was not visible after attachment and was not felt when touched with a finger, and "×" indicates that the unevenness was visible after attachment and was felt when touched with a finger. [Table 1]

[0052] As shown in Table 1, in the label sheets 1 of Examples 1 to 8 in which the thickness of the substrate was thicker than the thickness of the release layer, the unevenness was not visible after the label sheet 1 was attached to the adherend 2, and no unevenness was felt when the label sheet 1 was touched with a finger. On the other hand, in the label sheet of Comparative Example 1 in which the thickness of the substrate was thinner than the thickness of the release layer, the unevenness was visible after the label sheet was attached to the adherend 2, and an unevenness was felt when the label sheet was touched with a finger. From the above, it was found that when the thickness of the substrate was thinner than the thickness of the release layer, the unevenness of the label sheet attached to the adherend 2 was noticeable, and when the thickness of the substrate was thicker than the thickness of the release layer, the unevenness of the label sheet 1 attached to the adherend 2 was suppressed.

[0053] (Checking adhesive strength) Next, an experiment was conducted to confirm the adhesive strength of the label sheet 1. As mentioned above, it is desirable for the label sheet 1 to have adhesive strength that allows the position to be adjusted when the label sheet 1 is lightly placed on the adherend 2, but is firmly attached to the adherend 2 when the label sheet 1 is pressed against the adherend 2. The following experiment was conducted by appropriately changing the distance K4 between two adjacent cut portions 15A and the size (diameter K5) of the cut portion 15A.

[0054] 9(a) and (b) are diagrams showing the outline of the experiment. As shown in FIG. 9, the label sheet 1 was attached to the adherend 2, which was an envelope placed on a plate 31, and a weight 32 was placed on the label sheet 1. The weight of the weight 32 was set to 100 g. The force applied to the label sheet 1 when attaching the label sheet 1 to the adherend 2 is set to about 40 g when a woman presses the label sheet 1 with her finger. The weight 32 of 100 g is assumed to be a force considerably stronger than that applied to the label sheet 1. The time for which the weight 32 was placed on the label sheet 1 was set to 30 seconds. After 30 seconds had elapsed since the weight 32 was placed on the label sheet 1, the plate 31 was tilted at a certain angle to confirm whether the label sheet 1 slid from the adherend 2. The word "slide" indicates that the position of the label sheet 1 relative to the adherend 2 can be adjusted.

[0055] Furthermore, the width of the adhesive portion of the label sheet 1 attached to the adherend was checked. The width of the adhesive portion is the width of the adhesive portion 16 shown in Figure 5. To check the width of the adhesive portion 16, the label sheet 1 was pressed against a film made of polyethylene terephthalate (PET) with a thickness of 38 μm by rolling it back and forth with a 2 kg roller, and then the widths of the adhesive portion 16 and the non-adhesive portion 17 of the label sheet 1 were observed under a microscope from the back side of the film. The results of the above experiment are shown in Table 2 below. [Table 2]

[0056] The distance between the cuts in Table 2 indicates the distance K4 between two adjacent cuts 15A, and the presence or absence of sliding indicates the results of the experiment described above of whether or not the label sheet 1 slid from the adherend 2. As shown in Table 2, in the label sheets 1 of Examples 9 to 24 in which the diameter of the cut 15A was 2 mm or 4 mm and the distance K4 was 2 mm, it was found that although the position of the label sheets 1 relative to the adherend 2 could be adjusted, no adhesive portion 16 was formed. The results of the experiment on label sheets in which the diameter of the cut 15A and the distance K4 were changed compared to Examples 9 to 24 above are shown in Table 3 below. [Table 3]

[0057] As shown in Table 3, among the label sheets 1 of Examples 25 to 40 in which the diameter of cut portion 15A was 2 mm or 4 mm and the distance K4 was 4 mm, it was found that in Examples 25 and 33, it was difficult to adjust the position relative to the adherend 2 (they did not slide). Also, among the label sheets 1 of Examples 25 to 40, it was found that the adhesive portion 16 was formed in Examples 25 to 30 and 33 to 38. The results of experiments on label sheets in which the diameter of cut portion 15A and the distance K4 were further changed are shown in Table 4 below. [Table 4]

[0058] As shown in Table 4, among the label sheets 1 of Examples 41 to 56 in which the diameter of the cut portion 15A was 2 mm or 4 mm and the distance K4 was 8 mm, Examples 41, 48 to 52, and 54 made it difficult to adjust the position relative to the adherend 2 (did not slide). It was also found that the adhesive portion 16 was formed in all of the label sheets 1 of Examples 41 to 56.

[0059] Furthermore, Table 5 shows the results of adding the adhesive area ratio to the examples among the above-mentioned Tables 2 to 4, in which the position adjustment (sliding) with respect to the adherend 2 is possible and the adhesive part 16 is formed. The adhesive area was calculated by multiplying the area of ​​the non-adhesive portion for one cut 15A, calculated from the widths of the adhesive portion 16 and non-adhesive portion 17 of the label sheet 1 measured with the microscope described above, by the number of cuts 15A included in each label sheet, and then subtracting the calculated area of ​​the non-adhesive portion from the entire area of ​​the adhesive layer 12 (the entire area of ​​the label sheet 1). The adhesive area ratio is the ratio of the adhesive area to the adherend 2 to the entire area of ​​the adhesive layer 12. [Table 5]

[0060] As shown in Table 5, it was found that when the adhesion area to the adherend 2 relative to the entire area of ​​the adhesive layer 12 is 55.2% or more and 80.4% or less, position adjustment (sliding) to the adherend 2 is possible and adhesive portion 16 is formed. In this case, it was found that the ratio of the total area of ​​the circular cut portions 15A to the entire area of ​​the adhesive layer 12 is 5.2% or more and 13.4% or less. The adhesion area to the adherend 2 relative to the entire area of ​​the adhesive layer 12 may be 55.2% or more and 80.4% or less. Furthermore, the adhesion area to the adherend 2 relative to the entire area of ​​the adhesive layer 12 may be 50% or more and 90% or less.

[0061] (Check whether the label sheet has peeled off) Next, an experiment was conducted to confirm whether or not the label sheet 1 would peel off after being attached to the adherend 2. As shown in Figures 10(a) and (b), an experiment was conducted to confirm whether or not the label sheet 1 would peel off after the label sheet 1 was attached to the adherend 2, which is an envelope, and the adherend 2 was folded into a U-shape. This experiment was conducted three times each time the minimum value of the distance K3 from the outer edge 11g of the sixth surface 11c of the peeling layer 11 to the cut portion 15A (see Figure 6) was changed to 3 mm, 4 mm, 5 mm, 10 mm, and 15 mm. The results are shown in Table 6 below. [Table 6]

[0062] The number of times that peeling did not occur in Table 6 indicates the number of times out of three experiments in which no gap S was formed between the label sheet 1 and the adherend 2 even when the adherend 2 was bent into a U-shape as shown in Figure 10(a). As shown in Table 6, when the minimum value of the distance K3 was less than 4 mm (3 mm), a gap S was formed between the adherend 2 and the label sheet 1 in three experiments. In contrast, when the minimum value of the distance K3 was 4 mm or more, it was found that no gap S was formed between the label sheet 1 and the adherend 2 even when the adherend 2 to which the label sheet 1 was attached was bent into a U-shape. Furthermore, it was found that no gap S was formed in all three experiments out of three when the minimum value of the distance K3 was 5 mm or more. Thus, it was found that when the minimum value of the distance K3 was 4 mm or more, the adhesive force of the label sheet 1 could be maintained even when the adherend 2 was bent, and when the minimum value of the distance K3 was 5 mm or more, the adhesive force of the label sheet 1 could be maintained even more firmly.

[0063] The above describes the embodiments of the present disclosure. [Form 1] A label sheet to be attached to an adherend, a substrate having a first surface capable of being printed on and a second surface facing away from the first surface; an adhesive layer having a third surface facing the second surface and a fourth surface facing away from the third surface; a release layer having a fifth surface opposite the fourth surface and a sixth surface facing away from the fifth surface; Equipped with the release layer has a non-adhesive portion adhered to a part of the fourth surface, and a release portion adhered to a position different from the non-adhesive portion of the fourth surface, when the release layer is peeled off from the fourth surface, the release portion separates from the substrate, the adhesive layer, and the non-adhesive portion; The adhesive layer is configured to be attached to the adherend with the non-adhesive portion interposed between the fourth surface and the adherend, a distance from the fifth surface to the sixth surface in the non-adhesive portion is shorter than a distance from the first surface to the second surface in the base material; Label sheet. [Form 2] The non-adhesive portion is a cut portion formed in a predetermined shape in the release layer before the release layer is peeled off from the fourth surface. A label sheet according to claim 1. [Form 3] the minimum distance from the outer edge of the sixth surface of the release layer to the cut portion is 4 mm or more; A label sheet according to the first or second aspect. [Form 4] When the adhesive layer is attached to the adherend with the non-adhesive portion interposed between the fourth surface and the adherend, the adhesive area relative to the area of ​​the label sheet is 50% or more and 90% or less. A label sheet according to embodiment 2 or 3. [Form 5] the sixth surface of the release layer extends in a first direction and a second direction perpendicular to the first direction; When the length of the cut portion in the first direction is A and the length of the cut portion in the second direction is B, 1≦(A / B)≦5 is satisfied. A label sheet according to any one of the second to fourth aspects. [Form 6] A plurality of the cut portions are provided. The adhesive layer has an adhesive portion that adheres to the adherend between the plurality of cut portions. A label sheet according to any one of Forms 2 to 5. [Form 7] The thickness is 2mm or less, A label sheet according to any one of the first to sixth aspects. [Explanation of symbols]

[0064] 1,21...label sheet, 2...adherend, 11...peeling layer, 11b...fifth side, 11c...sixth side, 11g...outer edge, 12...adhesive layer, 12b...third side, 12c...fourth side, 13...substrate, 13b...first side, 13c...second side, 14...peeling portion, 15...non-adhesive portion, 15A...cut portion, 16...adhesive portion.

Claims

1. A label sheet to be attached to an adherend, a substrate having a first surface capable of being printed on and a second surface facing away from the first surface; an adhesive layer having a third surface facing the second surface and a fourth surface facing away from the third surface; a release layer having a fifth surface opposite the fourth surface and a sixth surface facing away from the fifth surface; Equipped with the release layer has a non-adhesive portion adhered to a part of the fourth surface, and a release portion adhered to a position different from the non-adhesive portion of the fourth surface, when the release layer is peeled off from the fourth surface, the release portion is separated from the base material, the adhesive layer, and the non-adhesive portion; The adhesive layer is configured to be attached to the adherend with the non-adhesive portion interposed between the fourth surface and the adherend, a distance from the fifth surface to the sixth surface in the non-adhesive portion is shorter than a distance from the first surface to the second surface in the base material; Label sheet.

2. the non-adhesive portion is a cut portion formed in a predetermined shape in the release layer before the release layer is peeled off from the fourth surface; The label sheet according to claim 1.

3. the minimum distance from the outer edge of the sixth surface of the release layer to the cut portion is 4 mm or more; The label sheet according to claim 2.

4. when the adhesive layer is attached to the adherend with the non-adhesive portion interposed between the fourth surface and the adherend, the adhesive area relative to the area of ​​the label sheet is 50% or more and 90% or less. The label sheet according to claim 2 or 3.

5. The sixth surface of the release layer extends in a first direction and a second direction perpendicular to the first direction, When the length of the cut portion in the first direction is A and the length of the cut portion in the second direction is B, 1≦(A / B)≦5 is satisfied. The label sheet according to claim 2 or 3.

6. A plurality of the cut portions are provided. The adhesive layer has an adhesive portion that adheres to the adherend between the plurality of cut portions. The label sheet according to claim 2 or 3.

7. The thickness is 2 mm or less. The label sheet according to claim 1 or 2.

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