Label manufacturing apparatus and manufacturing method

Abstract

The present invention provides a label manufacturing apparatus that can easily add information to labels that can be attached to a substrate while protecting the display area, such as the printed surface. [Solution] A label manufacturing apparatus having a base material and an adhesive layer, wherein the adhesive constituting the adhesive layer is a re-wettable adhesive, and the adhesive layer has a display portion partially disposed on the side of the adhesive layer opposite to the base material, and the adhesive layer in the area where the display portion is not disposed exhibits tackiness upon water supply, comprising: a first printing unit that forms the display portion by printing on the side of the adhesive layer opposite to the base material, and a water supply unit that supplies water from the display portion side to the partially exposed adhesive layer to exhibit tackiness.

Description

Technical Field

[0001] The present invention relates to a label manufacturing apparatus and a manufacturing method.

Background Art

[0002] A label has a display portion for transmitting various information. As a method of displaying information, in addition to the case where information is made visible from the surface side by printing or the like on the surface of the label, there is also a case where information is made visible from the adherend side (the back side of the label).

[0003] As a method of displaying information that can be viewed from the adherend side (the back side of the label), in Patent Document 1, by adopting a configuration including an impermeable base material, an adhesive layer, a display portion with a left-right reversed image, a semi-transparent or transparent base material, and an adhesive layer, the notation on the display portion can be viewed from the back side attached to the adherend.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] In Patent Document 1, since the printed surface (display portion) is not arranged on the surface layer, although it is protected, printing is performed on a semi-transparent or transparent base material, and an adhesive layer or an adhesive agent layer is arranged on the printed surface. In such a case, it is difficult to laterally impart information to the label after forming the adhesive label, and it lacks versatility.

[0006] Therefore, an object of the present invention is to provide a manufacturing apparatus and a manufacturing method capable of manufacturing a label that can easily impart information while protecting a display portion such as a printed surface in a label that can be attached to an adherend.

Means for Solving the Problems

[0007] The present invention provides the following:

[0008] (1) Having a base material and an adhesive layer, The adhesive constituting the aforementioned adhesive layer is a re-wettable adhesive. A label manufacturing apparatus having a display portion partially disposed on the side of the adhesive layer opposite to the substrate, wherein the adhesive layer in the area where the display portion is not disposed develops tackiness upon the supply of water, A first printing section that forms the display section by printing on the side of the adhesive layer opposite to the substrate, A label manufacturing apparatus comprising a water supply unit that supplies water to the partially exposed adhesive layer from the display unit side to give it tackiness.

[0009] (2) The label manufacturing apparatus according to (1), further comprising a second printing unit for printing on the side of the substrate opposite to the adhesive layer.

[0010] (3) When the base material and adhesive are unwound from the roll and transported, A label manufacturing apparatus according to (1) or (2), further comprising a cutting section for cutting the substrate and the adhesive.

[0011] (4) A label manufacturing apparatus according to any one of (1) to (3), further comprising an inversion section for inverting the substrate and adhesive layer.

[0012] (5) Having a base material and an adhesive layer, The adhesive constituting the aforementioned adhesive layer is a re-wettable adhesive. A method for manufacturing a label, having a display portion partially disposed on the side of the adhesive layer opposite to the substrate, A printing step in which the display portion is formed by printing on the side of the adhesive layer facing the substrate, A method for manufacturing a label, comprising a water supply step of supplying water to the adhesive layer partially exposed from the display unit side.

Advantages of the Invention

[0013] According to the label manufacturing apparatus and method of the present invention, it is possible to manufacture a label that can easily provide information while protecting a display unit such as a printing surface.

Brief Description of the Drawings

[0014] [Figure 1] FIG. 1(A) is a schematic cross-sectional view of a label according to an embodiment of the present invention, and FIG. 1(B) is a schematic cross-sectional view after being attached to an adherent. [Figure 2] It is a schematic diagram showing a label manufacturing apparatus according to the first embodiment of the present invention. [Figure 3] It is a schematic diagram showing a label manufacturing apparatus according to the second embodiment of the present invention. [Figure 4] It is a schematic diagram showing a label manufacturing apparatus according to the third embodiment of the present invention. [Figure 5] It is a schematic diagram showing a label manufacturing apparatus according to the fourth embodiment of the present invention.

Modes for Carrying Out the Invention

[0015] The present invention relates to a label manufacturing apparatus and method having a base material and an adhesive layer, wherein the adhesive constituting the adhesive layer is a rewet adhesive, and having a display unit on the side opposite to the base material on the adhesive layer.

[0016] When printing on an adhesive layer or an adhesive layer that exhibits tackiness even in a normal state, special inks or apparatuses are required, so there is no versatility. In addition, printing on an adhesive layer surface having tackiness is often technically difficult. Also, when the adhesive layer surface is exposed during printing, the printing method that contacts the adhesive layer surface is not suitable. Moreover, even in a printing method such as inkjet that does not contact the adhesive layer surface, problems such as the adhesive layer sticking to the roll occur when producing by a roll-to-roll method.

[0017] In the present invention, the adhesive layer contains a rewet adhesive. The rewet adhesive exhibits tackiness when water is applied, and has no tackiness in its normal state. Therefore, the display portion can be easily formed by ordinary methods (e.g., printing). On the other hand, when attaching a label to an adherend, if water is applied to the adhesive surface, the tackiness of the adhesive layer is exhibited, so that the attachment to the adherend is also easy. Furthermore, since the adhesive layer is the outermost layer, it is easy to change the printing for each lot or print variable information. Also, since the rewet adhesive exhibits tackiness when water is applied, it does not have tackiness in a state where no water is applied. Thus, in the case of an adhesive layer having permanent adhesiveness, a release liner is required until use, but the rewet adhesive layer does not require a release liner, so the environmental load is small. Therefore, the label according to one aspect of the present invention does not include a release liner. In this specification, "printing" includes not only the case of using a plate but also the case of not using a plate (so-called "printing").

[0018] Hereinafter, embodiments of the present invention will be described while referring to the attached drawings. In the description of the drawings, the same reference numerals are assigned to the same elements, and duplicate descriptions are omitted. Also, the dimensional ratios in the drawings are exaggerated for the convenience of explanation and may be different from the actual ratios.

[0019] FIG. 1 is a cross-sectional view of a label according to an embodiment of the present invention. The drawing is exaggerated for the convenience of explanation, and the dimensional ratios of the respective components in the drawing may be different from the actual ones. As shown in FIG. 1(A), the label 10 is composed of a base material 11, an adhesive layer 12, and a display portion 13. The display portion 13 is partially formed on the adhesive layer 12. For this reason, the adhesive layer 12 is partially exposed on the back side, and when the exposed adhesive layer 12 comes into contact with water, the adhesive layer 12 exhibits tackiness, and the label 10 can be attached to the adherend 14 (see FIG. 1(B)).

[0020] The substrate 11 may be transparent or opaque. If the substrate 11 is transparent, the information on the display section 13 is visible from the substrate 11 side (surface side) after it has been attached to the adherend 14. Here, in order to be visible from the substrate side, it is preferable that the haze of the substrate be 25% or less (lower limit 0%). The haze is measured using a haze meter (NDH-5000 manufactured by Nippon Denshoku Industries Co., Ltd.) in accordance with JIS K7136:2000. The adherend 14 may be transparent or opaque. If the adherend 14 is transparent, the display section 13 is also visible from the adhesive layer side (back side).

[0021] When printing is applied to the surface layer of the substrate 11 to form the display section 11A, a transparent coating layer may be provided on the print or a laminate film may be attached to protect the print from external abrasion.

[0022] If the base material 11 is opaque, the adherend 14 is preferably transparent. After being attached to the transparent adherend 14, the information on the display section 13 is visible from the adherend 14 side. If the display section 13 is text, it may be mirrored text.

[0023] Examples of transparent substrates 14 to which the adhesive will be applied include glass (e.g., window glass, glass bottles) and plastics (e.g., various containers, packaging materials, and sheet materials made from polyethylene terephthalate, polyethylene, polypropylene, polycarbonate, acrylic, etc.).

[0024] The following describes the components that make up each label. In this specification, "X~Y" indicating a range means "X or more and Y or less". Unless otherwise specified, operations and measurements of physical properties are performed under room temperature (20~25°C) / relative humidity of 45~55%RH. In this specification, "(meth)acrylic acid" refers to "acrylic acid or methacrylic acid". In the following description, the labels of the present invention may be simply referred to as "labels". The concept of "label" includes things such as films, sheets, tapes, etc.

[0025] (base material) The substrate is not particularly limited and includes resin substrates; so-called synthetic paper made of resin; metal foils such as copper, aluminum, and stainless steel; composite sheet substrates made by laminating metal foil and plastic film; vapor-deposited foil substrates with aluminum, silica, etc.; nonwoven fabric substrates; or paper substrates. As resin substrates, for example, films made of at least one resin selected from polyolefins such as polyethylene and polypropylene, polyesters such as polyethylene terephthalate, polybutylene terephthalate, and polyethylene naphthalate, polyvinyl chloride, polystyrene, polyurethane, polycarbonate, polyamide, polyimide, polyetherimide, poly(meth)acrylic acid ester, polybutene, polybutadiene, polymethylpentene, acrylic urethane, ethylene vinyl acetate copolymer, ethylene(meth)acrylic acid copolymer, ethylene(meth)acrylic acid ester copolymer, ABS resin, ionomer resin, and various thermoplastic elastomers, or single or multiple laminated films selected from these can be used. The paper substrate is not particularly limited and includes, for example, high-quality paper, kraft paper, glassine paper, coated paper, art paper, cast-coated paper, impregnated paper, foamed paper, synthetic paper, thermal paper, dust-free paper, parchment paper, rayon paper, recycled paper, etc. The paper substrate may also be a laminate formed by stacking two or more layers of these materials.

[0026] As a base material, paper is preferable because it is easy to peel off during the cleaning process when recycling the object to which the label is applied after use. Furthermore, from the viewpoint of ease of use as a label, high-quality paper, glassine paper, coated paper, art paper, cast-coated paper, thermal paper, recycled paper, etc., are more preferable.

[0027] Variable information such as the manufacturing date, best-before date, expiration date, and lot number is recorded on the surface of the substrate 11 (the side facing the adhesive layer) as a display section 11A. Alternatively, immutable information such as a graphic (company logo) may be recorded as a display section 11A.

[0028] Furthermore, the substrate may have a printable coating layer on its surface.

[0029] The thickness of the substrate is not particularly limited, but is preferably 10 μm to 200 μm, more preferably 20 μm to 150 μm, and even more preferably 30 μm to 100 μm. Such a thickness provides good handling during application.

[0030] (adhesive layer) The adhesive constituting the bonding layer is a re-wettable adhesive. Examples of materials for the re-wettable adhesive include protein-based materials such as gelatin, casein, albumin, and soy protein; hydrated carbon-based materials such as starch and dextrin; cellulose-based materials such as methylcellulose, hydroxyethylcellulose, ethylhydroxyethylcellulose, carboxymethylcellulose, and bissose; and water-soluble compounds such as gum arabic, tragacanth gum, sodium alginate, polyvinyl alcohol, and polyvinyl acetate. These materials may be used individually or in combination of two or more. In particular, from the viewpoint of adhesive performance, the re-wettable adhesive is preferably one that contains at least one selected from the group consisting of polyvinyl alcohol-based adhesives, starch-based adhesives, cellulose-based adhesives, and polyvinyl acetate-based adhesives, and more preferably a re-wettable adhesive that contains a polyvinyl alcohol-based adhesive.

[0031] Examples of polyvinyl alcohol used in polyvinyl alcohol-based adhesives include unmodified polyvinyl alcohol and modified polyvinyl alcohol.

[0032] Examples of modified polyvinyl alcohols include α-olefin-modified polyvinyl alcohol, cation-modified polyvinyl alcohol, anionic-modified polyvinyl alcohol, silanol-modified polyvinyl alcohol, acetoacetyl-modified polyvinyl alcohol, and mercapto-modified polyvinyl alcohol.

[0033] The adhesive strength of the adhesive layer depends, for example, on the degree of polymerization of the polyvinyl alcohol constituting the re-wettable adhesive, with the degree of polymerization of the polyvinyl alcohol preferably being 300 to 5000, more preferably 350 to 4900, and even more preferably 400 to 4800.

[0034] This makes it possible to improve the solubility of polyvinyl alcohol in water, allowing for a more favorable formation of the adhesive layer, and also improves the adhesive strength when water is applied.

[0035] In this specification, "degree of polymerization of polyvinyl alcohol" refers to the value measured by a method conforming to the "average degree of polymerization" described in JIS K 6726:1994.

[0036] Even if the degree of polymerization of polyvinyl alcohol is within the aforementioned range, the adhesion of the adhesive layer can be adjusted by varying the degree of polymerization.

[0037] For example, if the degree of polymerization of polyvinyl alcohol is in a relatively low range, the polyvinyl alcohol becomes more soluble in water, which can improve the initial adhesive strength of the adhesive layer, in other words, the adhesive strength after water is applied to the adhesive layer to induce tackiness and before it dries.

[0038] Furthermore, if the degree of polymerization of polyvinyl alcohol is in a relatively high range within the aforementioned range, the adhesive strength of the adhesive layer after drying, in other words, the adhesive strength when the adhesive layer is given water to develop tackiness, attached to the adherend, and then dried to form a film, will be high.

[0039] This allows for better final adhesive strength.

[0040] Furthermore, the degree of polymerization of polyvinyl alcohol can be determined according to the adhesive properties that are important in the adhesive layer, such as the initial adhesive strength after application to the substrate or the adhesive strength after drying.

[0041] Furthermore, considering the balance between the two above, it is also preferable to combine polyvinyl alcohols with high and low degrees of polymerization. Specifically, polyvinyl alcohol A, which has a degree of polymerization of 300 to 800, may be combined with polyvinyl alcohol B, which has a degree of polymerization of 2000 to 5000. The degree of polymerization of polyvinyl alcohol A is more preferably 350 to 700, and even more preferably 400 to 600. The degree of polymerization of polyvinyl alcohol B is more preferably 2300 to 4900, and even more preferably 4200 to 4800. The mixing ratio of polyvinyl alcohol A to polyvinyl alcohol B is preferably 30:70 to 70:30 by mass, more preferably 35:65 to 65:35, and even more preferably 40:60 to 60:40.

[0042] The degree of saponification of the polyvinyl alcohol is preferably 70 mol% to 90 mol%, more preferably 75 mol% to 90 mol%, and even more preferably 80 mol% to 90 mol%. This makes it possible to improve the tackiness that develops when water is applied to the adhesive layer.

[0043] In this specification, "degree of saponification of polyvinyl alcohol" refers to the value measured by a method conforming to the "degree of saponification" described in JIS K 6726:1994.

[0044] Examples of starches used in starch-based adhesives include cornstarch, wheat flour, sweet potato starch, potato starch, and tapioca. Note that this includes modified starch.

[0045] Polyvinyl acetate adhesives consist of polymers containing vinyl acetate as monomer units, and examples of constituent materials include polyvinyl acetate and ethylene-vinyl acetate copolymers.

[0046] Examples of materials that make up cellulose-based adhesives include methylcellulose, hydroxyethylcellulose, ethylhydroxyethylcellulose, carboxymethylcellulose, and biscellulose.

[0047] The adhesive layer may contain other components. Examples of other components include fillers, softeners, heat and light stabilizers, antioxidants, and crosslinking agents.

[0048] The thickness of the adhesive layer is, for example, 3 to 30 μm.

[0049] The adhesive layer can be formed, for example, by mixing the above components with a solvent (e.g., water) to prepare an adhesive layer-forming composition, and then coating the composition onto a substrate. The solid content of the adhesive layer-forming composition is, for example, 5 to 60% by mass.

[0050] Methods for applying the adhesive layer-forming composition include, for example, the roll coating method, bar coating method, knife coating method, roll-knife coating method, blade coating method, die coating method, and gravure coating method.

[0051] After coating, the adhesive layer-forming composition is dried to form an adhesive layer. This removes the moisture contained in the coated adhesive layer-forming composition, and the adhesive layer is formed. Drying can be done, for example, by natural drying or air drying, but it is preferable to dry it by heating. The drying temperature is preferably 60°C to 100°C, and more preferably 70°C to 90°C.

[0052] [Display] The display unit is imprinted with various types of information, such as characters, numbers, symbols, and graphics (e.g., a company logo). While there are no particular limitations on how the display unit is formed, it is typically formed by printing because it allows for the mass production of a fixed pattern and the easy addition of variable information. Specifically, it can be formed by flexographic printing, offset printing, letterpress printing, gravure printing, screen printing, etc., all of which are suitable for mass production of a fixed pattern. On the other hand, thermal transfer printing, inkjet printing, and electrophotographic (electrostatic) printing are suitable for imprinting variable information, such as serial numbers.

[0053] In the present invention, since the re-wet adhesive layer is placed on the surface, it is easy to form a display area by printing or other means. Therefore, even if the display area contains variable information, the information can be displayed easily. For this reason, a preferred embodiment of the present invention is one in which the display area contains variable information. Examples of variable information include lot number, serial number, manufacturing date, barcode, two-dimensional code, lottery result (winner, loser), address, name, telephone number, etc.

[0054] The ink used to form the printed area is not particularly limited and includes, for example, oil-based ink, latex ink, and light-curing ink (ultraviolet-curing ink, electron beam-curing ink).

[0055] The display portion is partially provided on the adhesive layer in order to leave an exposed adhesive layer for adhesion to the adherend (the adhesive layer is partially exposed). The area of ​​the display portion is, for example, 60% or less of the area of ​​the adhesive layer before the display portion is formed, and may also be 30% or less.

[0056] [Label manufacturing equipment] Next, with reference to Figure 2, the label manufacturing apparatus 100 according to the first embodiment will be described.

[0057] As shown in Figure 2, the manufacturing apparatus 100 includes a supply unit 110, a guide roller 120, a first printing unit 130, a second printing unit 140, a cutting unit 150, a water supply unit 160, and a drawer unit 170.

[0058] The labels supplied from the supply unit 110 have an adhesive layer 12, which is a re-moistened adhesive, formed on a base material 11, and are wound in a roll shape with the adhesive layer 12 side facing inward.

[0059] The supply unit 110 transports the rolled labels downstream. The rolled labels are fixed to a rotating shaft 111, and the labels are supplied as the rotating shaft 111 rotates. In the first embodiment, the supply unit 110 supplies the labels with the substrate 11 positioned above the adhesive layer 12.

[0060] The guide roller 120 is provided to direct the labels supplied from the supply unit 110 horizontally along the downstream direction.

[0061] The first printing section 130 forms a display section 13 on the side of the adhesive layer 12 opposite to the substrate 11. When printing constant information, the first printing section 130 employs flexographic printing, offset printing, letterpress printing, gravure printing, screen printing, etc. When printing variable information, the first printing section 130 employs thermal transfer printing, inkjet printing, electrophotography (electrostatic) printing, etc.

[0062] The second printing unit 140 prints on the surface layer of the substrate 11 to form the display unit 11A. When printing constant information, the second printing unit 140 employs flexographic printing, offset printing, letterpress printing, gravure printing, screen printing, etc. When printing variable information, the second printing unit 140 employs thermal transfer printing, inkjet printing, electrophotography (electrostatic) printing, etc.

[0063] The cutting section 150 cuts the label, which has a display section 11A formed on the base material 11 and a display section 13 formed on the adhesive layer 12, to a predetermined length. The cutting section 150 is not limited as long as it can cut the label, and can use, for example, a blade or a laser.

[0064] The water supply unit 160 applies water to the partially exposed adhesive layer 12 from the label display area 13 side, thereby causing the adhesive layer 12 to develop tackiness. The water applied to the adhesive layer 12 can be, for example, tap water, deionized water, or a liquid containing water.

[0065] The configuration of the water supply unit 160 is not particularly limited, but examples include configurations using a spray bottle, brush, sponge, sponge roller, etc.

[0066] The drawer unit 170 holds the label from above and below, and the upper roller 171 rotates clockwise and the lower roller 172 rotates counterclockwise, thereby pulling the label out from the supply unit 110.

[0067] In the label manufacturing apparatus 100 according to this embodiment, the supply unit 110, guide roller 120, first printing unit 130, second printing unit 140, cutting unit 150, water supply unit 160, and drawer unit 170 are arranged inside the outer casing 180. Therefore, the label manufacturing apparatus 100 is packaged.

[0068] The label, with its adhesive layer 12 exhibiting tackiness, emerges from the outlet 181 of the outer packaging 180 at a predetermined length. The user then attaches the label that emerges from the outlet 181 to a designated object.

[0069] Next, with reference to Figure 3, the configuration of the label manufacturing apparatus 200 according to the second embodiment will be described.

[0070] Figure 3 is a schematic diagram showing the label manufacturing apparatus 200 according to the second embodiment. Parts common to the first embodiment will not be described, and only the parts unique to the second embodiment will be described. The same reference numerals will be used for the same components as in the first embodiment described above, and redundant descriptions will be omitted. The second embodiment differs from the first embodiment in that it is provided with a reversing unit 250, among other things.

[0071] As shown in Figure 3, the label manufacturing apparatus 200 according to the second embodiment includes a supply unit 110, guide rollers 221 and 222, a first printing unit 130, a reversing unit 250, a second printing unit 140, a cutting unit 150, a water supply unit 160, and a pull-out unit 170. The second printing unit 140, the first printing unit 130, the cutting unit 150, the water supply unit 160, and the pull-out unit 170 have the same configuration as the label manufacturing apparatus 100 according to the first embodiment described above, so their description is omitted.

[0072] Guide rollers 221 and 222 are provided to direct the labels supplied from the supply unit 110 horizontally along the downstream direction.

[0073] In the second embodiment, the supply unit 110 supplies the labels with the substrate 11 positioned below the adhesive layer 12.

[0074] The inversion unit 250 is positioned between the first printing unit 130 and the second printing unit 140 along the transport direction. The inversion unit 250 inverts the top and bottom of the substrate 11 and the adhesive layer 12. Specifically, before passing through the inversion unit 250, the label has the adhesive layer 12 positioned vertically above and the substrate 11 positioned below, and after passing through the inversion unit 250, the label has the substrate 11 positioned vertically above and the adhesive layer 12 positioned below. Therefore, in the label manufacturing apparatus 200 according to the second embodiment, the first printing unit 130 can print on the adhesive layer 12 from above.

[0075] In the label manufacturing apparatus 100 according to the first embodiment described above, the first printing unit 130 printed on the adhesive layer 12 from below. In contrast, in the label manufacturing apparatus 200 according to the second embodiment, the first printing unit 130 can print on the adhesive layer 12 from above. This improves the versatility of the printing method.

[0076] Although labels according to embodiments of the present invention have been described above, the present invention is not limited to the embodiments described above, and various modifications are possible within the scope of the invention.

[0077] For example, in the first embodiment described above, the labels were fed out in a roll-like state, but as shown in Figure 4, a single sheet of labels may be fed out. In this case, a single sheet of labels is supplied into the exterior body 180 from the inlet 182 of the exterior body 180. The single sheet of labels is then transported toward the outlet 181 by a pair of transport units 310 and 320. In this configuration, the support base 90 that supports the labels is formed to move away from the front and / or back sides of the paper in Figure 4 at the water supply point so that the water supply unit 160 can supply water to the labels.

[0078] Furthermore, in the first embodiment described above, the labels were fed out in a roll-like state, but as shown in Figure 5, the labels may be fed out folded in an accordion-like manner. The apparatus configuration in this case is the same as in Figure 4. [Explanation of Symbols]

[0079] 10 labels, 11 base material, 11A display section, 12 adhesive layer, 13 Display section, 14 Adherent, 100, 200 manufacturing equipment, 130 1st Printing Department, 140 2nd Printing Department, 150 cutting section, 160 Water supply department, 250 Reversal section.

Claims

1. Having a base material and an adhesive layer, The adhesive constituting the aforementioned adhesive layer is a re-wettable adhesive. A label manufacturing apparatus having a display portion partially disposed on the side of the adhesive layer opposite to the substrate, wherein the adhesive layer in the area where the display portion is not disposed exhibits tackiness upon the supply of water, A first printing section that forms the display section by printing on the side of the adhesive layer opposite to the substrate, A label manufacturing apparatus comprising a water supply unit that supplies water to the partially exposed adhesive layer from the display unit side to give it tackiness.

2. The label manufacturing apparatus according to claim 1, further comprising a second printing unit for printing on the side of the substrate opposite to the adhesive layer.

3. When the base material and adhesive are unwound from the roll and transported, The label manufacturing apparatus according to claim 1 or 2, further comprising a cutting section for cutting the substrate and the adhesive.

4. The label manufacturing apparatus according to claim 1 or 2, further comprising an inversion section for inverting the substrate and adhesive layer.

5. Having a base material and an adhesive layer, The adhesive constituting the aforementioned adhesive layer is a re-wettable adhesive. A method for manufacturing a label, having a display portion partially disposed on the side of the adhesive layer opposite to the substrate, A printing step in which the display portion is formed by printing on the side of the adhesive layer facing the substrate, A method for manufacturing a label, comprising a water supply step of supplying water to the partially exposed adhesive layer from the display portion side.

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