Manufacturing method of label stock, label stock and label

Abstract

To provide a method for manufacturing a label sheet roll in which a display part has a remarkable design property, a label sheet roll, and a label.SOLUTION: A method for manufacturing a label sheet roll 1 includes: a lamination step of laminating an upper base material sheet 30 on a surface of a lower base material sheet 10; a cutting step of cutting the upper base material sheet 30 along the contour of a plurality of upper base materials; a removal step of removing a portion of the upper base material sheet 30 other than the plurality of upper base materials from the lower base material sheet; a coating step of forming overcoat layers on the surface of the lower base material sheet 10 and the surface of the plurality of upper base materials; and an adhesion layer forming step of forming an adhesion layer on the back of the lower base material sheet 10. In the coating step, a lower base material coating part and an upper base material coating part are formed, and coating material is supplied to the surface of the lower base material sheet 10 and the surface of the plurality of upper base materials so that gaps are formed between the lower base material coating part and the upper base materials.SELECTED DRAWING: Figure 7

Description

[Technical field]

[0001] The present invention relates to a method for manufacturing a label stock, a label stock, and a label. [Background technology]

[0002] Conventionally, so-called linerless labels that do not have a release paper have been known. For example, Japanese Patent Application Laid-Open No. 2002-258755 discloses a continuous label strip that includes a label base material, a pressure-sensitive adhesive layer provided on the back surface of the label base material, a thermosensitive coloring layer provided on the surface of the label base material, a printing layer provided on the surface of the thermosensitive coloring layer, and a release agent layer provided on the surface of the thermosensitive coloring layer and the surface of the printing layer. The continuous label strip is formed into a roll shape by winding the pressure-sensitive adhesive layer so that it is superimposed on the surface of the release agent layer. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2002-258755 A Summary of the Invention [Problem to be solved by the invention]

[0004] In a continuous label strip as described in JP-A-2002-258755, there are cases where a design that makes the display portion of each label stand out is required.

[0005] An object of the present invention is to provide a manufacturing method for a label stock having a display portion with a distinctive design, a label stock, and a label. [Means for solving the problem]

[0006] A method for manufacturing a label stock according to one aspect of the present invention is a method for manufacturing a label stock formed by winding a continuous label strip having a shape extending in one direction into a roll, the method including a laminating step of laminating an upper base material sheet having a shape extending in the one direction on a surface of a lower base material sheet having a shape extending in the one direction, a cutting step of cutting the upper base material sheet along the outlines of the multiple upper base materials so as to form multiple upper base materials arranged at intervals in the one direction, a removing step of removing portions of the upper base material sheet other than the multiple upper base materials from the lower base material sheet, and a coating material provided on a surface of the lower base material sheet and surfaces of the multiple upper base materials. The method includes a coating process in which an overcoat layer is formed on the surface of the lower base sheet and the surfaces of the multiple upper base materials by supplying an adhesive material to the back surface of the lower base sheet, and an adhesive layer formation process in which an adhesive layer is formed on the back surface of the lower base sheet by supplying an adhesive material to the back surface of the lower base sheet, in which the coating process supplies the coating material to the surface of the lower base sheet and the surfaces of the multiple upper base materials so that a lower substrate covering portion of the overcoat layer that covers the surface of the lower base sheet and an upper substrate covering portion of the overcoat layer that covers the surface of each of the upper substrates are formed, and a gap is formed between the lower substrate covering portion and each of the upper substrates.

[0007] Furthermore, a label roll according to one aspect of the present invention is a label roll formed by winding a continuous label strip into a roll, the continuous label strip comprising a lower base sheet having a shape extending in one direction, an adhesive layer provided on the back surface of the lower base sheet, a plurality of upper base materials provided on the surface of the lower base sheet and arranged at intervals in the one direction, and an overcoat layer provided on the surface of the lower base sheet and on the surface of each of the plurality of upper base materials, the overcoat layer having a lower base covering portion covering the surface of the peripheral portion of each of the upper base materials of the lower base sheet, and an upper base covering portion covering the surface of each of the upper base materials, and a gap is formed between the lower base covering portion and the upper base material.

[0008] Moreover, a label according to one aspect of the present invention comprises a lower substrate, an adhesive layer provided on the back surface of the lower substrate, an upper substrate provided on the surface of the lower substrate and having an outer shape smaller than that of the lower substrate, and an overcoat layer provided on the surface of the lower substrate and the surface of the upper substrate, the overcoat layer having a lower substrate covering portion covering the surface of the lower substrate surrounding the upper substrate, and an upper substrate covering portion covering the surface of the upper substrate, and a gap is formed between the lower substrate covering portion and the upper substrate. Effect of the Invention

[0009] According to the present invention, it is possible to provide a manufacturing method for a label stock, a label stock, and a label in which the display portion has a distinctive design. [Brief description of the drawings]

[0010] [Figure 1] 1 is a front view showing a schematic diagram of a labeled article according to one embodiment of the present invention. [Diagram 2] FIG. 2 is a perspective view of a label web and a continuous label strip. [Diagram 3] FIG. 3 is a cross-sectional view taken along line III-III in FIG. [Figure 4] FIG. 2 is a diagram showing a schematic diagram of a test method for a special ball tack test. [Diagram 5] 1A to 1C are diagrams illustrating a manufacturing process for a labeled article. [Figure 6] FIG. 6 is an enlarged view of the area indicated by the solid line VI in FIG. 5. [Figure 7] FIG. 2 is a diagram illustrating a manufacturing process of a label roll. [Figure 8] FIG. 8 is an enlarged view of the area indicated by the solid line VIII in FIG. [Figure 9] FIG. 8 is an enlarged view of the area indicated by the solid line IX in FIG. [Figure 10] FIG. 8 is an enlarged view of the area indicated by the solid line X in FIG. [Figure 11] 8 is an enlarged view of the area indicated by solid line XI in FIG. 7. [Figure 12]FIG. 8 is an enlarged view of the area indicated by the solid line XII in FIG. [Figure 13] FIG. 8 is an enlarged view of the area indicated by the solid line XIII in FIG. [Figure 14] FIG. 8 is an enlarged view of the area indicated by the solid line XIV in FIG. [Figure 15] FIG. 2 is a cross-sectional view illustrating a cross section of a label web. [Figure 16] FIG. 11 is a cross-sectional view illustrating a modification of the bonding layer forming step. [Figure 17] FIG. 11 is a cross-sectional view illustrating a modification of the cutting step. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described with reference to the accompanying drawings, in which the same or corresponding components are designated by the same reference numerals.

[0012] Fig. 1 is a diagram that shows a schematic diagram of a labeled article according to one embodiment of the present invention. As shown in Fig. 1, the labeled article 5 includes an article B and a label 3. Fig. 1 shows a container that can contain a liquid or the like as the article B. However, the article B is not limited to a container. The article B may be light-transmitting.

[0013] The label 3 is attached to the surface of the article B. FIG. 2 shows a continuous label strip 2 including a plurality of labels 3. The continuous label strip 2 has a plurality of labels 3 arranged in one direction. The continuous label strip 2 is a so-called linerless label that does not have a release paper (liner). The label roll 1 is formed by winding and stacking the continuous label strip 2 into a roll. The linerless label is an environmentally friendly label suitable for the SDGs because no release paper is generated as waste when the label is attached to the article B.

[0014] As shown in FIG. 3, the label 3 includes a lower substrate 12, a bonding layer 20, an upper substrate 32, a printing layer 35, an overcoat layer 40, and an adhesive layer 50.

[0015] The lower substrate 12 is made of a synthetic resin such as polyethylene terephthalate or polypropylene. The lower substrate 12 is made of a material having optical transparency. In this specification, "having optical transparency" means that the haze value is less than 20%. The haze value of the lower substrate 12 is preferably less than 10%, and more preferably less than 7%. The thickness of the lower substrate 12 is about 9 μm to 50 μm.

[0016] The upper substrate 32 is provided on the surface of the lower substrate 12 via the bonding layer 20. The adhesive strength of the bonding layer 20 is preferably 3N / 25mm or more, and more preferably 5N / 25mm or more. The upper substrate 32 has an outer shape smaller than that of the lower substrate 12. The upper substrate 32 may have a lower light transmittance than that of the lower substrate 12, or may have a light transmittance equivalent to that of the lower substrate 12. The upper substrate 32 is made of synthetic resin, paper, or the like. The thickness of the upper substrate 32 is preferably about 30μm to 100μm.

[0017] 3, a recess 12a is formed on the surface of the lower substrate 12, the recess 12a following the outer shape of the upper substrate 32. The recess 12a has a shape that is recessed from the surface of the lower substrate 12 toward the back surface. The recess 12a is formed at a position that coincides with the outer edge of the upper substrate 32 when the label 3 is viewed in plan.

[0018] The printed layer 35 is provided on the surface of the upper substrate 32. The printed layer 35 is a layer that displays a design, etc. The printed layer 35 may be omitted.

[0019] The overcoat layer 40 is provided on the surface of the lower substrate 12 and the surface of the upper substrate 32. The overcoat layer 40 protects the surface of the lower substrate 12 and the surface of the upper substrate 32. The overcoat layer 40 contains a material having peelability. For example, the overcoat layer 40 is made of a material in which a silicone resin or a fluorine resin is added to an acrylic ester resin. The overcoat layer 40 is light-transmitting.

[0020] As shown in FIG. 3, the overcoat layer 40 has a lower substrate covering portion 42, an upper substrate covering portion 44, and a side substrate covering portion 46.

[0021] The lower substrate covering portion 42 covers the surface of the lower substrate 12 in a region surrounding the upper substrate 32. A gap is formed between the lower substrate covering portion 42 and the upper substrate 32.

[0022] The upper substrate covering portion 44 covers the surface of the upper substrate 32. Here, the "surface of the upper substrate 32" means the surface of the printed layer 35 when the printed layer 35 is provided on the surface of the upper substrate 32, and means the surface of the upper substrate 32 when the printed layer 35 is omitted.

[0023] The side surface covering portion 46 covers the side surface of the upper substrate 32. The side surface covering portion 46 is connected to the upper substrate covering portion 44. The lower end portion of the side surface covering portion 46 may be in contact with the surface of the lower substrate 12, or may be spaced apart from the surface of the lower substrate 12. The gap is formed between the side surface covering portion 46 and the lower substrate covering portion 42. However, as long as the gap is formed between the upper substrate 32 and the lower substrate covering portion 42, the lower end portion of the side surface covering portion 46 may be connected to the lower substrate covering portion 42.

[0024] The adhesive layer 50 is provided on the back surface of the lower substrate 12. The adhesive layer 50 is a layer that contacts the front surface of the article B. The adhesive layer 50 is made of a light-transmitting material. The adhesive layer 50 may be made of a material having adhesive properties. The adhesive layer 50 has a thickness of about 20 μm.

[0025] The adhesive layer 50 is made of a material that is activated by light energy such as ultraviolet light or infrared light, or a material that is activated by thermal energy such as hot air. In this embodiment, the adhesive layer 50 is made of a material that includes an ultraviolet curing resin, that is, a material that is activated by light energy. The main components of the material that constitutes the adhesive layer 50 are not particularly limited, and include olefin rubber, styrene-based resin, tackifier, etc. Additives such as plasticizer, olefin wax, amide-based resin, and cellulose-based resin may be added to this main component.

[0026] The adhesive strength of the adhesive layer 50 is ball No. 4 or less in the special ball tack test before activation of the adhesive layer 50, is ball No. 8 or more in the special ball tack test immediately after activation of the adhesive layer 50, and is ball No. 6 or more in the special ball tack test 5 seconds after activation of the adhesive layer 50. The adhesive strength of the adhesive layer 50 is preferably ball No. 5 or more in the special ball tack test 15 seconds after activation of the adhesive layer 50.

[0027] The special ball tack test is a test similar to the normal inclined ball tack test. The special ball tack test corresponds to a test in which the approach section in the inclined ball tack test is omitted. That is, as shown in FIG. 4, the special ball tack test uses a rolling ball device 300 used in the inclined ball tack test, and the rolling ball device 300 has an inclined surface 310 with an inclination angle of 30°, and a sample 320 having a width of 10 mm and a length of 70 mm or more is placed on the inclined surface 310. Specifically, the surface of the sample 320 is composed of an adhesive layer 50, and the sample 320 is placed on the inclined surface 310 with the adhesive layer 50 facing upward. In this special ball tack test, unlike the normal inclined ball tack test, a ball 330 is placed on the upper end of the sample 320 so as not to apply pressure to the adhesive layer 50. Then, the maximum ball number that rolls under its own weight and stops on the adhesive layer 50 is taken as the measured value.

[0028] As shown in FIG. 3, the label 3 has an overlapping area A10 and a non-overlapping area A20.

[0029] The overlapping region A10 is a region that overlaps with the upper substrate 32 in the stacking direction (the vertical direction in FIG. 3) of the lower substrate 12 and the upper substrate 32. The non-overlapping region A20 is a region that does not overlap with the upper substrate 32 in the stacking direction. In other words, the non-overlapping region A20 is a region around the upper substrate 32 in a plan view of the label 3.

[0030] The haze value of the overlapping region A10 is greater than the haze value of the non-overlapping region A20. The haze value of the non-overlapping region A20 is preferably less than 15.0, and more preferably less than 10.0.

[0031] The non-overlapping region A20 has an outer region A21 and an inner region A22. The outer region A21 is a region that overlaps with the lower substrate covering portion 42 in the stacking direction. The inner region A22 is a region that does not overlap with the lower substrate covering portion 42 in the stacking direction. The inner region A22 is formed inside the outer region A21 and around the overlapping region A10 in a plan view of the label 3. The haze value of the inner region A22 is smaller than the haze value of the outer region A21.

[0032] Next, a method for manufacturing the labeled article 5 will be described with reference to Fig. 5. The method for manufacturing the labeled article 5 includes a preparation step, a feeding step, a cutting step, an activation step, a transporting step, and an attachment step.

[0033] The preparation step is a step of preparing a label web 1 in which the continuous label web 2 is wound up into a roll.

[0034] The unwinding step is a step of unwinding the continuous label web 2 from the label web 1. The blocking value when unwinding the continuous label web 2 from the label web 1 is preferably 1.0 N / 15 mm or less, and more preferably 0.7 N / 15 mm or less.

[0035] The blocking value is measured as follows. First, a second test piece is superimposed on a first test piece (15 mm wide) of the label 3 so that the adhesive layer 50 of the second test piece (15 mm wide) of the label 3 contacts the surface of the overcoat layer 40 of the first test piece (15 mm wide). Then, the first test piece and the second test piece are pressurized at 80°C and 0.5 MPa for 10 seconds in a heat seal tester, and the T-peel strength of the first test piece and the second test piece is measured. The tensile strength (adhesive strength) at this time corresponds to the blocking value.

[0036] The cutting step is a step of cutting the unwound continuous label web 2 into individual labels 3 each having a single upper substrate 32. As shown in Fig. 5, in this step, the continuous label web 2 is cut by a cutting unit 110. As shown in Fig. 6, the cutting unit 110 cuts the continuous label web 2 along a line to cut L1 located on a lower substrate covering portion 42 provided between a pair of adjacent upper substrates 32. Note that the continuous label web 2 may or may not be provided with a mark or the like indicating the line to cut L1.

[0037] The activation step is a step of activating the adhesive layer 50 of the label 3. As shown in FIG. 5, in this step, the energy irradiation unit 120 irradiates the adhesive layer 50 with light energy (ultraviolet rays, etc.) to activate the adhesive layer 50. This activates the adhesive layer 50 of the label 3. The label 3 may contain an energy absorbing material that absorbs light energy. The energy absorbing material is preferably added to the adhesive layer 50 or the overcoat layer 40. In this embodiment, an ultraviolet absorbing material is added as an energy absorbing material to at least one of the adhesive layer 50 and the overcoat layer 40, and the energy irradiation unit 120 irradiates ultraviolet rays. In addition, when the adhesive layer 50 is made of a material that is activated by thermal energy, the energy irradiation unit 120 applies thermal energy such as hot air to the adhesive layer 50.

[0038] The conveying step is a step of conveying an activated label 3A, which is a label 3 having an adhesive layer 50 in an activated state. As shown in FIG. 5, in this step, a conveyor 130 conveys the activated label 3A. The conveying speed of the conveyor 130 can be adjusted to any speed between a relatively low first speed at the time of start-up and a relatively high second speed at the time of mass production. The area of ​​the conveyor 130 downstream of the energy irradiation unit 120 is not irradiated with light energy. That is, in the conveying step, the activated label 3A is conveyed in a state in which the adhesive layer 50 is not activated from an activation position (a position irradiated with light energy by the energy irradiation unit 120) where the adhesive layer 50 is activated to a separation position separated from the activation position. In other words, in the conveying step, the activated label 3A is conveyed from the activation position to the separation position while the adhesive force of the adhesive layer 50 is reduced.

[0039] The attaching step is a step of attaching the activated label 3A to the article B at a position separated from the energy irradiation unit 120. The article B is transported by a conveyor or the like. When the transport speed of the conveyor 130 is the first speed, the attaching step may be performed, for example, within 15 seconds after the activation step, i.e., when the adhesive strength of the adhesive layer 50 is ball No. 5 or more in a special ball tack test, and when the transport speed of the conveyor 130 is the second speed, the attaching step may be performed, for example, within 5 seconds after the activation step, i.e., when the adhesive strength of the adhesive layer 50 is ball No. 6 or more in a special ball tack test.

[0040] Next, a method for manufacturing the label material 1 will be described with reference to Figures 7 to 15. The method for manufacturing the label material 1 includes a laminating step, a printing step, a cutting step, a removing step, a coating step, and an adhesive layer forming step.

[0041] The lamination process is a process of laminating an upper base sheet 30 on the surface of the lower base sheet 10 via a bonding layer 20. The lower base sheet 10 is a sheet including a plurality of lower base materials 12, and has a shape extending in one direction. The portion of the lower base sheet 10 between a pair of lines to cut L1 constitutes the lower base material 12. The upper base material sheet 30 is a sheet including a plurality of upper base materials 32 arranged to be spaced apart in one direction, and has a shape extending in one direction.

[0042] 7 to 9, the lamination process includes a bonding layer forming process in which a bonding material supplying unit 20A supplies a bonding material to the surface of the lower base sheet 10 to form a bonding layer 20 on the lower base sheet 10, and a placing process in which an upper base sheet 30 is placed on the bonding layer 20. The bonding material supplying unit 20A forms the bonding layer 20 by, for example, printing. Examples of printing methods using the bonding material supplying unit 20A include a letterpress method, a flexo method, and a gravure method.

[0043] The printing process is a process of forming a printing layer 35 on the surface of the upper base sheet 30. The printing layer 35 includes indications such as characters and figures. As shown in Figs. 7 and 10, in the printing process, the printing layer 35 is formed on the surface of the upper base sheet 30 by the printing unit 35A. Examples of printing methods using the printing unit 35A include the letterpress method, the flexography method, and the gravure method. Note that when an upper base sheet 30 on which at least one of the front and back surfaces of the upper base sheet 30 has been printed in a separate process is used, the printing process may be omitted.

[0044] The cutting process is a process of cutting the upper base sheet 30 along the outer shapes of the multiple upper base materials 32 so as to form multiple upper base materials 32 arranged at intervals in one direction. As shown in Figs. 7 and 11, in the cutting process, the upper base sheet 30 is cut by the cutting unit 210 along the outer shapes of each upper base material 32. The cutting unit 210 may have a blade shape having a shape along the outer shape of the upper base material 32. In the cutting process in this embodiment, the upper base sheet 30 is cut from the surface of the upper base sheet 30 toward the lower base sheet 10 so as to form recesses 12a (see Fig. 12) along the outer shapes of each upper base material 32 on the surface of the lower base sheet 10.

[0045] The removal step is a step of removing portions of the upper base sheet 30 other than the multiple upper base materials 32 from the lower base sheet 10. In the removal step of this embodiment, as shown in Fig. 7 and Fig. 12, portions of the upper base sheet 30 and the printing layer 35 other than the portions overlapping with each upper base material 32 in the stacking direction are peeled off. The peeled off portions are taken up by a roller. After this step, as shown in Fig. 12, recesses 12a are formed on the surface of the lower base sheet 10 in the areas surrounding each upper base material 32.

[0046] The coating process is a process of forming an overcoat layer 40 on the surface of the lower substrate sheet 10 and the surfaces of the upper substrates 32 by supplying a coating material to the surface of the lower substrate sheet 10 and the surfaces of the upper substrates 32. As shown in FIG. 7, in the coating process, a coating material is supplied to the surface of the lower substrate sheet 10 and the surfaces of the upper substrates 32 by a coating material supply unit 40A. As shown in FIG. 13, in this coating process, a coating material is supplied to the surface of the lower substrate sheet 10 and the surfaces of the upper substrates 32 so that the lower substrate covering portion 42 and the upper substrate covering portion 44 are formed, and a gap is formed between the lower substrate covering portion 42 and each upper substrate 32. In this embodiment, in the coating process, in addition to the lower substrate covering portion 42 and the upper substrate covering portion 44, a side covering portion 46 is also formed, and the coating material is supplied so that the gap is formed between the lower substrate covering portion 42 and the side covering portion 46. The gap means a space between the end of the lower substrate covering portion 42 and the edge of the upper substrate 32 on the surface of the lower substrate sheet 10. Therefore, as long as the gap is formed, the lower end of the side covering part 46 may be connected to the end of the lower substrate covering part 42. The coating material supply unit 40A forms the overcoat layer 40 by, for example, printing. In particular, in a printing method using a roll plate, the thickness of the upper substrate 32 can be used to easily form the gap.

[0047] The adhesive layer forming step is a step of forming an adhesive layer 50 (see FIG. 14) on the rear surface of the lower base sheet 10 by supplying an adhesive material to the rear surface of the lower base sheet 10. As shown in FIG. 7, in the adhesive layer forming step, an adhesive material is supplied to the rear surface of the lower base sheet 10 by an adhesive supplying unit 50A. The adhesive supplying unit 50A forms the adhesive layer 50 by, for example, printing.

[0048] Fig. 15 is a partially enlarged view of the label web 1. As shown in Fig. 15, when the continuous label web 2 is wound in a roll shape so that the adhesive layer 50 is in contact with the overcoat layer 40, the side covering portion 46 is interposed between the adhesive layer 50 and the upper base material 32. This prevents the adhesive layer 50 from coming into contact with the upper base material 32.

[0049] As described above, in the manufacturing method of the label material roll 1 of this embodiment, in the removing step, the portions of the upper base material sheet 30 other than the multiple upper base materials 32 are removed from the lower base material sheet 10, and then in the coating step, a coating material is supplied to form gaps between the lower base material covering portions 42 of the overcoat layer 40 and each upper base material 32. Therefore, the contours of each upper base material 32 become clear, and a label material roll is manufactured in which each upper base material 32 has a distinctive design as a display portion.

[0050] Furthermore, in the manufacturing method for the labeled article 5 in the above embodiment, the activated label 3A is transported to a separated position away from the activation position, where the attachment process is performed. Therefore, by separating the device that activates the adhesive layer 50 (energy irradiation unit 120) from the device that attaches the activated label 3A to the article, it is possible to increase versatility.

[0051] Furthermore, in the label 3 of the above embodiment, the lower base material 12 and adhesive layer 50 are light-transmitting, and the haze value of the non-overlapping region A20 is less than 10.0. Therefore, when the label 3 is attached to an article B having light-transmitting properties, the non-overlapping region A20 essentially blends in with the article B, and the overlapping region A10 including the upper base material 32 is prominently visible as the main design part.

[0052] 16, the bonding material supply unit 20A may form a bonding layer 20 on the lower base sheet 10, the bonding layer 20 having a central bonding portion 21 having an outer shape corresponding to the outer shape of the upper base material 32, and a peripheral bonding portion 22 formed around the central bonding portion 21. The peripheral bonding portion 22 has an outer shape larger than the outer shape of the upper base material 32, and has an adhesive strength smaller than that of the central bonding portion 21. The peripheral bonding portion 22 is formed, for example, by gradation printing.

[0053] In this way, even if the printed layer 35 and the upper substrate 32 are cut at a position slightly shifted from the normal cutting position of the upper substrate 32 in the cutting step as shown in Fig. 17, the edge of the upper substrate 32 is prevented from peeling off from the lower substrate 12. In Fig. 17, the normal cutting position is indicated by a two-dot chain line.

[0054] It will be appreciated by those skilled in the art that the exemplary embodiments described above are examples of the following aspects.

[0055] The manufacturing method of the label stock in the above embodiment is a manufacturing method of a label stock formed by winding and stacking a continuous label strip having a shape extending in one direction into a roll, and includes a laminating process of laminating an upper base material sheet having a shape extending in the one direction on a surface of a lower base material sheet having a shape extending in the one direction, a cutting process of cutting the upper base material sheet along the outlines of the multiple upper base materials so as to form multiple upper base materials arranged at intervals in the one direction, a removing process of removing portions of the upper base material sheet other than the multiple upper base materials from the lower base material sheet, and a coating material supplying process for applying a coating material to a surface of the lower base material sheet and surfaces of the multiple upper base materials. The method includes a coating process in which an overcoat layer is formed on the surface of the lower base sheet and the surfaces of the multiple upper base materials by applying an adhesive to the back surface of the lower base sheet, and an adhesive layer formation process in which an adhesive layer is formed on the back surface of the lower base sheet by applying an adhesive to the back surface of the lower base sheet, in which a lower base material covering portion of the overcoat layer covering the surface of the lower base sheet and an upper base material covering portion of the overcoat layer covering the surface of each of the upper base materials are formed, and the coating material is supplied to the surface of the lower base material sheet and the surfaces of the multiple upper base materials so that gaps are formed between the lower base material covering portion and each of the upper base materials.

[0056] In this method of manufacturing label stock, the portions of the upper substrate sheet other than the upper substrates are removed from the lower substrate sheet in the removing step, and then a coating material is supplied in the coating step to form gaps between the lower substrate covering portion of the overcoat layer and each upper substrate. This makes the outline of each upper substrate clear, and thus allows the manufacture of label stock in which each upper substrate has a distinctive design as a display portion.

[0057] In addition, in the cutting process, it is preferable to cut the upper base material sheet from the surface of the upper base material sheet toward the lower base material sheet so that a recess is formed on the surface of the lower base material sheet that follows the outer shape of each upper base material.

[0058] In this way, the contours of each upper substrate are more clearly defined.

[0059] In addition, in the coating process, it is preferable that the coating material is supplied so that a side covering portion is formed that covers the side surface of each of the upper substrates, and the gap is formed between the lower substrate covering portion and the side covering portion.

[0060] In this way, in the label roll formed by winding the continuous label sheet into a roll, the side covering portion prevents contact between the adhesive layer and the upper base material, thereby preventing blocking from occurring when the continuous label sheet is unwound from the label roll.

[0061] Furthermore, the lamination process preferably includes a bonding layer formation process for forming a bonding layer on the surface of the lower base sheet, and a placement process for placing the upper base sheet on the bonding layer, and the bonding layer formed in the bonding layer formation process has a central bonding portion having an outer shape corresponding to the outer shape of each of the upper base materials, and a peripheral bonding portion formed around the central bonding portion, and the peripheral bonding portion preferably has an outer shape larger than the outer shape of the upper base material and has an adhesive strength smaller than the adhesive strength of the central bonding portion.

[0062] In this way, even if the upper substrate is cut at a position slightly shifted from the normal cutting position in the cutting step, the edge of the upper substrate is prevented from peeling off from the lower substrate. In addition, since the adhesive strength of the peripheral joint is smaller than that of the central joint, the portions of the upper substrate sheet other than the upper substrates are effectively removed from the lower substrate sheet in the removing step.

[0063] In addition, the label stock in the above embodiment is a label stock formed by winding a continuous label sheet into a roll, and the continuous label sheet comprises a lower base sheet having a shape extending in one direction, an adhesive layer provided on the back surface of the lower base sheet, a plurality of upper base materials provided on the surface of the lower base sheet and arranged at intervals in the one direction, and an overcoat layer provided on the surface of the lower base sheet and on the surface of each of the plurality of upper base materials, and the overcoat layer has a lower base covering portion that covers the surface of the peripheral portion of each of the upper base materials of the lower base sheet, and an upper base covering portion that covers the surface of each of the upper base materials, and a gap is formed between the lower base covering portion and the upper base material.

[0064] In this case, it is preferable that a recess is formed on the surface of the lower base sheet so as to conform to the outline of each of the upper base materials, and that the recess has a shape that is recessed from the surface of the lower base sheet toward the back surface.

[0065] This creates a visual effect as if the upper base material is present inside the recess of the lower base material, making the contour of the upper base material stand out even more.

[0066] It is also preferable that the overcoat layer further has a side covering portion that covers a side surface of the upper substrate, and the gap is formed between the lower substrate covering portion and the side covering portion.

[0067] This prevents the adhesive layer from coming into contact with the upper substrate when the adhesive layer is superimposed on the overcoat layer.

[0068] In addition, the label in the above embodiment comprises a lower substrate, an adhesive layer provided on the back surface of the lower substrate, an upper substrate provided on the surface of the lower substrate and having an outer shape smaller than that of the lower substrate, and an overcoat layer provided on the surface of the lower substrate and the surface of the upper substrate, the overcoat layer having a lower substrate covering portion that covers the surface of the lower substrate in a portion surrounding the upper substrate, and an upper substrate covering portion that covers the surface of the upper substrate, and a gap is formed between the lower substrate covering portion and the upper substrate.

[0069] In this case, it is preferable that a recess is formed on the surface of the lower substrate, the recess following the outline of the upper substrate, and the recess has a shape recessed from the surface of the lower substrate toward the back surface.

[0070] It is also preferable that the overcoat layer further has a side covering portion that covers a side surface of the upper substrate, and the gap is formed between the lower substrate covering portion and the side covering portion.

[0071] It should be noted that the embodiments and examples disclosed herein are illustrative in all respects and should not be considered as limiting. The scope of the present invention is indicated by the claims rather than the description of the embodiments and examples above, and further includes all modifications within the meaning and scope of the claims. [Explanation of symbols]

[0072] 1 label roll, 2 label continuous body, 3 label, 5 labeled article, 10 lower substrate sheet, 12 lower substrate, 12a recess, 20 bonding layer, 20A bonding material supply unit, 21 central bonding portion, 22 peripheral bonding portion, 30 upper substrate sheet, 32 upper substrate, 35 printing layer, 35A printing unit, 40 overcoat layer, 40A coating material supply unit, 42 lower substrate covering portion, 44 upper substrate covering portion, 46 side covering portion, 50 adhesive layer, 50A adhesive material supply unit, 110 cutting unit, 120 energy irradiation portion, 130 conveying portion, 210 cutting unit, 300 rolling device, 310 inclined surface, 320 sample, 330 ball, A10 overlapping region, A20 non-overlapping region, A21 outer region, A22 inner region, B article.

Claims

1. A method for manufacturing a label web formed by winding a continuous label strip having a shape extending in one direction into a roll, comprising the steps of: a lamination step of laminating an upper base material sheet having a shape extending in one direction on a surface of the lower base material sheet having a shape extending in the one direction; A cutting process of cutting the upper base material sheet along the outlines of the plurality of upper base materials so as to form a plurality of upper base materials arranged at intervals in the one direction; a removing step of removing a portion of the upper base material sheet other than the plurality of upper base materials from the lower base material sheet; a coating step of forming an overcoat layer on a surface of the lower base sheet and on a surface of the plurality of upper base materials by supplying a coating material to the surface of the lower base material sheet and the surfaces of the plurality of upper base materials; and an adhesive layer forming step of forming an adhesive layer on the rear surface of the lower base sheet by supplying an adhesive material to the rear surface of the lower base sheet, In the coating process, a lower substrate covering portion of the overcoat layer that covers the surface of the lower substrate sheet, and an upper substrate covering portion of the overcoat layer that covers the surface of each of the upper substrates are formed, and the coating material is supplied to the surface of the lower substrate sheet and the surfaces of the multiple upper substrates so that gaps are formed between the lower substrate covering portion and each of the upper substrates.

2. The method for manufacturing a label sheet according to claim 1, wherein in the cutting step, the upper base material sheet is cut from the surface of the upper base material sheet toward the lower base material sheet so that a recess that follows the outer shape of each of the upper base materials is formed on the surface of the lower base material sheet.

3. 3. The method for manufacturing a label sheet as described in claim 1 or 2, wherein in the coating process, the coating material is supplied so that a side covering portion is formed that covers the side surface of each of the upper substrates, and the gap is formed between the lower substrate covering portion and the side covering portion.

4. The lamination step includes: a bonding layer forming step of forming a bonding layer on a surface of the lower base sheet; A placing step of placing the upper base sheet on the bonding layer, The bonding layer formed in the bonding layer forming step is A central joint portion having an outer shape corresponding to the outer shape of each of the upper substrates; a peripheral joint portion formed around the central joint portion, The method for manufacturing a label material according to claim 1 , wherein the peripheral joint portion has an outer shape larger than an outer shape of the upper base material and an adhesive strength smaller than an adhesive strength of the central joint portion.

5. A label web formed by winding and stacking a continuous label sheet into a roll, The label continuum is A lower base sheet having a shape extending in one direction; An adhesive layer provided on the back surface of the lower base sheet; A plurality of upper base materials provided on a surface of the lower base material sheet and arranged at intervals in the one direction; an overcoat layer provided on a surface of the lower base sheet and on a surface of each of the upper base materials; The overcoat layer is A lower base material covering portion that covers a surface of a portion of the lower base material sheet surrounding each of the upper base materials; and an upper substrate covering portion that covers a surface of each of the upper substrates, A gap is formed between the lower substrate covering portion and the upper substrate.

6. A recess is formed on the surface of the lower base sheet, the recess being aligned with the contour of each of the upper base materials, The label material according to claim 5 , wherein the recess has a shape recessed from the front surface to the back surface of the lower base sheet.

7. The overcoat layer further has a side covering portion that covers a side surface of the upper base material, The label material according to claim 5 or 6, wherein the gap is formed between the lower substrate covering portion and the side surface covering portion.

8. A lower substrate; An adhesive layer provided on the back surface of the lower substrate; An upper substrate provided on a surface of the lower substrate and having an outer shape smaller than an outer shape of the lower substrate; An overcoat layer provided on a surface of the lower substrate and a surface of the upper substrate, The overcoat layer is A lower substrate covering portion that covers a surface of a portion of the lower substrate surrounding the upper substrate; An upper substrate covering portion that covers a surface of the upper substrate, A label, wherein a gap is formed between the lower substrate covering portion and the upper substrate.

9. A recess is formed on the surface of the lower base material so as to conform to the outer shape of the upper base material, The label according to claim 8 , wherein the recess has a shape recessed from the front surface to the back surface of the lower substrate.

10. The overcoat layer further has a side covering portion that covers a side surface of the upper base material, The label according to claim 8 or 9, wherein the gap is formed between the lower substrate covering portion and the side surface covering portion.

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