Decorative sheet for absorbent product

Abstract

The invention provides a decorative sheet for an absorbent product. The purpose of the present invention is to impress a user who visually recognizes a decorative layer of a decorative sheet used in any one of an absorbent article, an independent packaging body for the absorbent article, and a packaging body for the absorbent article that the absorbent article is a product in which the absorbent article is easily three-dimensionally deformed and bonded. A decorative sheet (50) for an absorbent product, which is used in any one of an absorbent article (1), an individual packaging body (30) for the absorbent article, and a packaging body (40) for the absorbent article and is decorated, is provided with: a sheet (51); an adhesive layer (52) provided on the surface of the sheet (51); and a decorative layer (53) which is provided on the adhesive layer (52) and has a maximum thickness of 10 [mu] m or less, the decorative layer (52) being provided in a region visible to a user and protruding from the surface of the sheet (51) in the thickness direction of the sheet (51).

Description

Technical Field

[0001] The present invention relates to a decorative sheet for absorbent products. Background Art

[0002] In Patent Document 1, there is disclosed a method for manufacturing a decorated sheet in which an identification layer (characters, graphics, etc.) made of a foil having a metal component is formed on a material sheet. Specifically, the manufacturing method is as follows: A transfer film having a foil and a material sheet are overlapped and conveyed between a pattern roll and a support roll, and the foil corresponding to the pattern on the outer peripheral surface of the pattern roll is pressed against the material sheet to form an identification layer.

[0003] Prior Art Documents

[0004] Patent Documents

[0005] Patent Document 1: Japanese Unexamined Patent Application Publication No. 2022-12041 Summary of the Invention

[0006] Problems to be Solved by the Invention

[0007] For absorbent articles such as sanitary napkins and disposable diapers, a performance is desired in which they are deformed three-dimensionally along the wearer's body and conform to the wearer's body so as to be less likely to leak. On the other hand, in the decorated sheet of Patent Document 1, an identification layer is formed by pressing a foil. Therefore, the identification layer becomes concave with respect to the surroundings and becomes smooth. Thus, if the decorated sheet of Patent Document 1 is used for an absorbent article, an individual package of an absorbent article, or a package of an absorbent article, a user visually recognizes the identification layer that is smoothed and concave before using the absorbent article. In this way, the user is likely to have an impression that the absorbent article is also a flat product like the identification layer, and may worry whether the absorbent article is deformed three-dimensionally and conforms to the body.

[0008] The present invention has been made in view of the above problems, and an object thereof is to give a user who visually recognizes a decorative layer of a decorative sheet used for any one of an absorbent article, an individual package of an absorbent article, and a package of an absorbent article an impression that the absorbent article is a product that is easily deformed three-dimensionally and conforms.

[0009] Means for Solving the Problems

[0010] The main invention for achieving the above object is a decorative sheet for absorbent products, characterized in that

[0011] the decorative sheet for absorbent products is used for any one of an absorbent article, an individual package of an absorbent article, and a package of an absorbent article and is decorated,

[0012] the decorative sheet for absorbent products has:

[0013] Sheet;

[0014] An adhesive layer provided on the surface of the sheet; and

[0015] A decorative layer provided on the adhesive layer and having a maximum thickness of 10 μm or less,

[0016] The decorative layer is provided at a visually recognizable position of the user and protrudes from the surface of the sheet in the thickness direction of the sheet.

[0017] Other features of the present invention will be clarified by the description in this specification and the drawings.

[0018] Effects of the Invention

[0019] According to the present invention, it is possible to give the user who visually recognizes the decorative layer of the decorative sheet used in any one of the absorbent article, the individual package of the absorbent article, and the package of the absorbent article an impression that the absorbent article is a product that is easily deformable three-dimensionally and conformable. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a top view obtained by observing the sanitary napkin 1 in the unfolded state from the skin side.

[0021] Figure 2 It is a schematic cross-sectional view of the sanitary napkin 1.

[0022] Figure 3 It is a top view obtained by observing the individual package 30 of the sanitary napkin in the unfolded state from the non-skin side.

[0023] Figure 4 It is a top view obtained by observing the individual package 30 of the sanitary napkin in the middle of unfolding from the skin side.

[0024] Figure 5 It is a top view of the individual package 30 of the sanitary napkin.

[0025] Figure 6A It is a perspective view of the package 40 of the sanitary napkin, Figure 6B It is a view showing the state where the storage body 41 is opened.

[0026] Figure 7 It is a front view of the package 40.

[0027] Figure 8 It is a rear view of the package 40.

[0028] Figure 9 It is a view for explaining the decorative sheet 50.

[0029] Figure 10A and Figure 10BThis is a diagram for explaining the decorative sheet 50.

[0030] Figure 11 This is a front view of a part of the independent package 30.

[0031] Figure 12 This is a diagram for explaining the manufacturing method of the decorative sheet 50.

[0032] Explanation of reference numerals

[0033] 1. Sanitary napkin (absorbent article); 2. Surface sheet; 3. Intermediate sheet; 4. Back sheet; 5. Wing; 6. Side sheet; 8. Adhesive part; 9. Adhesive part; 10. Absorbent body; 11. Absorbent core; 12. Core wrapping sheet; 20. Compression part; 30. Independent package of sanitary napkin; 31. Packaging sheet; 32. Fixing band; 33. Release sheet; 34. Release sheet; 35. Joint part; 36. Welding part; 40. Package of sanitary napkin; 41. Storage body; 42. Main body part; 43. Sealing member; 50. Decorative sheet; 51. Sheet; 52. Adhesive layer; 52E. Protruding part; 53. Decorative layer; 54. Three-dimensional decorative part; 60. Printing layer; 61. Coding identification part; 62. Article identification part; 63. Information identification group; 64. Sanitary napkin group identification part; 70. Manufacturing device; 71. Conveying mechanism; 72. Ink ejection device; 73. Adhesive ejection device; 74. First irradiation device; 75. Decorative layer conveying mechanism; 76. Second irradiation device. Detailed implementation mode

[0034] Based on the description in this specification and the drawings, at least the following matters are clarified.

[0035] Mode 1 is a decorative sheet for absorbent products, characterized in that the decorative sheet for absorbent products is used in any one of absorbent articles, independent packages of absorbent articles, and packages of absorbent articles and is decorated. The decorative sheet for absorbent products has: a sheet; an adhesive layer provided on the surface of the sheet; and a decorative layer provided on the adhesive layer and having a maximum thickness of 10 μm or less. The decorative layer is provided at a position visually recognizable by the user and protrudes from the surface of the sheet in the thickness direction of the sheet.

[0036] According to Mode 1, even a decorative layer with a relatively thin maximum thickness can protrude in the thickness direction of the sheet by overlapping with the adhesive layer. It can give the user who sees the protruding and three-dimensional decorative layer the impression that the absorbent article is also three-dimensionally deformed and fitted.

[0037] (Mode 2) Based on the decorative sheet for absorbent products described in Mode 1, the overlapping part of the decorative layer and the adhesive layer has parts with different thicknesses.

[0038] According to Method 2, it is easier to visually recognize the decorative layer three-dimensionally. Thus, it is possible to give the user an impression that the absorbent article is also three-dimensionally deformed and conforms.

[0039] (Method 3) Based on the decorative sheet for the absorbent product described in Method 2, at the portion where the decorative layer overlaps with the adhesive layer, the thickness of the end portion in a predetermined direction is smaller than the thickness of the portion adjacent to the end portion and closer to the inside in the predetermined direction.

[0040] According to Method 3, the decorative layer is more easily visually recognized three-dimensionally in a manner of bulging from the end portion toward the inside. Thus, it is possible to give the user an impression that the absorbent article is also three-dimensionally deformed and conforms.

[0041] (Method 4) Based on the decorative sheet for the absorbent product described in Method 2 or 3, at the portion where the decorative layer overlaps with the adhesive layer, the central portion in a predetermined direction is recessed.

[0042] According to Method 4, the surface of the decorative layer becomes an uneven shape, and it is easier to visually recognize the decorative layer three-dimensionally. Thus, it is possible to give the user an impression that the absorbent article is also three-dimensionally deformed and conforms.

[0043] (Method 5) Based on the decorative sheet for the absorbent product described in any one of Methods 1 to 4, the adhesive layer has an overhanging portion that extends to one side in a predetermined direction with respect to the decorative layer, and the maximum thickness of the overhanging portion is smaller than the maximum thickness of the portion of the adhesive layer that overlaps with the decorative layer.

[0044] According to Method 5, the thickness of the overhanging portion is small, so that it is possible to suppress a decrease in the visual recognition property of the decorative layer. The decorative layer is not located at the end portion where force is easily applied, so that it is possible to suppress cracking and peeling of the decorative layer and maintain the quality of the decorative layer. Thus, it is possible to give the user an impression that the absorbent article is also of high quality.

[0045] (Method 6) Based on the decorative sheet for the absorbent product described in any one of Methods 1 to 5, the adhesive layer has an overhanging portion that extends to one side in a predetermined direction with respect to the decorative layer, and the length of the overhanging portion in the predetermined direction is shorter than the length of the portion of the adhesive layer that overlaps with the decorative layer in the predetermined direction.

[0046] According to Method 6, the length of the overhanging portion is short, so that it is possible to suppress a decrease in the aesthetic property of the decorative layer. The decorative layer is not located at the end portion where force is easily applied, so that it is possible to suppress cracking and peeling of the decorative layer and maintain the quality of the decorative layer. Thus, it is possible to give the user an impression that the absorbent article is also of high quality.

[0047] (Mode 7) Based on the decorative sheet for an absorbent product described in any one of Modes 1 to 6, the maximum thickness of the adhesive layer is greater than the maximum thickness of the decorative layer.

[0048] According to Mode 7, the decorative layer can be further protruded in the thickness direction of the sheet, and the decorative layer can be easily visually recognized three-dimensionally.

[0049] (Mode 8) Based on the decorative sheet for an absorbent product described in any one of Modes 1 to 7, the decorative layer is a layer formed of any one of a metal foil, a holographic foil, and a pigment foil.

[0050] According to Mode 8, the aesthetic property of the three-dimensional decorative layer can be improved. It can give the user who visually recognizes the decorative layer formed of a metal foil or a holographic foil the impression that the absorbent article is a high-quality product. On the other hand, the decorative layer formed of a pigment foil becomes a matte decoration with dulling, and can give the user the impression that it is a product with a stable sense of security.

[0051] (Mode 9) Based on the decorative sheet for an absorbent product described in any one of Modes 1 to 8, the absorbent article has a compressed portion compressed from the skin side of the surface sheet, and the minimum width of the decorative layer is smaller than the minimum width of the compressed portion.

[0052] According to Mode 9, it can give the user who visually recognizes the decorative layer with a small width the impression that the absorbent article is a soft product that is delicate and flexible in deformation. Moreover, the user who visually recognizes the decorative layer is likely to have the impression that the absorbent article is easily deformed starting from the compressed portion with a sufficient width.

[0053] (Mode 10) Based on the decorative sheet for an absorbent product described in any one of Modes 1 to 9, the absorbent article has a compressed portion compressed from the skin side of the surface sheet, and the maximum thickness of the portion where the decorative layer overlaps with the adhesive layer is smaller than the minimum depth of the compressed portion.

[0054] According to Mode 10, the thickness of the decorative layer and the adhesive layer can be suppressed, and peeling caused by snagging can be suppressed. Moreover, the user who visually recognizes the decorative layer can have the impression that the absorbent article is easily deformed starting from the compressed portion with a sufficient depth.

[0055] (Mode 11) Based on the decorative sheet for an absorbent product described in any one of Modes 1 to 10, the decorative sheet for the absorbent product has a printing layer provided on the surface of the sheet, and the adhesive layer and the decorative layer are provided on the local printing layer.

[0056] According to Mode 11, even if the adhesive layer and the decorative layer are peeled off, the printed layer can still be visually recognized, so that the quality degradation of the decorative sheet can be suppressed. Thus, a high-quality impression of the absorbent article can also be ensured for the user.

[0057] (Mode 12) Based on the decorative sheet for an absorbent product described in any one of Modes 1 to 11, the decorative sheet for an absorbent product is used for an individual package of the absorbent article or a package of the absorbent article. The absorbent article has an absorbent core and a core wrap sheet covering the surface of the absorbent core. The decorative sheet has a longitudinal direction and a lateral direction orthogonal to each other. When the decorative sheet is stretched in the direction with a higher elongation strength in the longitudinal direction and the lateral direction, the elongation amount of the decorative sheet when the adhesive layer breaks is set as the first elongation amount, and when the core wrap sheet is stretched in the width direction of the absorbent article, the elongation amount of the core wrap sheet when the core wrap sheet breaks is set as the second elongation amount. At this time, the first elongation amount is larger than the second elongation amount.

[0058] According to Mode 12, shedding caused by the breakage of the adhesive layer can be suppressed for the elongation of the decorative sheet, and the quality degradation of the decorative sheet can be suppressed. Thus, a high-quality impression of the absorbent article can also be ensured for the user.

[0059] (Mode 13) Based on the decorative sheet for an absorbent product described in any one of Modes 1 to 12, the decorative sheet has a longitudinal direction and a lateral direction orthogonal to each other, and has a first adhesive layer and a second adhesive layer. When the decorative sheet is stretched in the direction with a higher elongation strength in the longitudinal direction and the lateral direction, the elongation amount of the decorative sheet when the first adhesive layer breaks is different from the elongation amount of the decorative sheet when the second adhesive layer breaks.

[0060] According to Mode 13, when an external force acts on the decorative sheet, due to the difference in the elongation modes of the first adhesive layer and the second adhesive layer, the three-dimensional visual effects of the decorative layer above the first adhesive layer and the decorative layer above the second adhesive layer are different. Thus, the user can appreciate the differences between multiple three-dimensional decorative layers.

[0061] (Mode 14) Based on the decorative sheet for an absorbent product described in any one of Modes 1 to 13, the decorative sheet for an absorbent product is used for an individual package of the absorbent article or a package of the absorbent article, and has a welding part for accommodating and sealing the absorbent article inside. When looking down at the decorative layer, the welding part can also be visually recognized.

[0062] According to Method 14, by using the welded part that is recessed in a top view, the height of the decorative layer is made prominent, and the decorative layer is easily visually recognized three-dimensionally. Thus, an impression can be given to the user that the absorbent article is also deformed three-dimensionally and conforms.

[0063] (Method 15) Based on the decorative sheet for an absorbent product described in any one of Methods 1 to 14, the absorbent article has an absorbent core containing a superabsorbent polymer, and the minimum width of the decorative layer is smaller than the average particle diameter of the superabsorbent polymer.

[0064] According to Method 15, an impression can be given to the user who visually recognizes the decorative layer with a smaller width that the absorbent article is a soft product that is delicate and flexibly deformed. Moreover, the user who visually recognizes the decorative layer can easily recognize the presence of the superabsorbent polymer and is easily impressed that the excreted liquid is absorbed and retained by the superabsorbent polymer.

[0065] (Method 16) Based on the decorative sheet for an absorbent product described in any one of Methods 1 to 15, the decorative sheet for an absorbent product is used for the package of the absorbent article and has a coding identification part, and the coding identification part is formed by a printing layer that does not overlap with the adhesive layer and the decorative layer.

[0066] According to Method 16, the visual recognition property of the coding identification part is improved, and the reading device can accurately read the coding identification part.

[0067] (Method 17) Based on the decorative sheet for an absorbent product described in any one of Methods 1 to 16, the decorative sheet for an absorbent product is used for the package of the absorbent article and has an article identification part indicating the absorbent article, and the article identification part is formed by the adhesive layer and the decorative layer.

[0068] According to Method 17, an impression can be given to the user who visually recognizes the three-dimensional article identification part that the absorbent article is also deformed three-dimensionally and conforms.

[0069] === Embodiment ===

[0070] Hereinafter, taking a sanitary napkin as an example of an absorbent article, an embodiment of the decorative sheet for an absorbent product used in any one of an absorbent article, an individual package of an absorbent article, and a package of an absorbent article will be described. The absorbent article is not limited to a sanitary napkin and also includes disposable diapers of the underwear type or belt type, sanitary pads, panty liners, light incontinence pads, urine absorbent pads, breast pads, axillary sweat pads, disposable diapers for pets, and other absorbent articles.

[0071] << Basic Structure of Sanitary Napkin 1 >>

[0072] Figure 1 This is a top view obtained by observing the sanitary napkin 1 in the unfolded state from the skin side. Figure 2 This is a schematic cross-sectional view of the sanitary napkin 1. The unfolded sanitary napkin 1 has a length direction, a width direction, and a thickness direction that are orthogonal to each other. In the length direction, the side that abuts against the wearer's lower abdomen is called the "front side", and the side that abuts against the wearer's buttocks is called the "rear side". In addition, in the thickness direction of the sanitary napkin 1, the side that abuts against the wearer's skin is called the "skin side", and the opposite side is called the "non-skin side".

[0073] As Figure 2 shown, the sanitary napkin 1 has a topsheet 2, a middle sheet 3, an absorber 10, a backsheet 4, wing flaps 5, and side flaps 6. The materials adjacent in the thickness direction are joined and fixed using an adhesive such as a hot melt adhesive (not shown). The topsheet 2 and the middle sheet 3 are liquid-permeable sheet members, and examples thereof include non-woven fabrics. The backsheet 4 is a liquid-impermeable sheet member, and examples thereof include resin films. The side flaps 6 are folded back from the end portions in the width direction on the non-skin side surface of the absorber 10 to the inside in the width direction so as to be located at the end portions in the width direction on the skin side surface of the topsheet 2. The backsheet 4 and the wing flaps 5 project outward in the width direction with respect to the side flaps 6, and a wing portion 1w is formed at the central portion in the length direction of the sanitary napkin 1.

[0074] In addition, the topsheet 2 that comes into contact with the wearer's skin may also be a sheet made of cotton as a natural fiber (for example, a sheet member formed of 100% cotton, a mixed sheet of cotton and air-through non-woven fabric, etc.). In this way, the irritation to the wearer's skin can be reduced. In this case, as shown in the following drawings, by providing a pattern indicating cotton on the sanitary napkin 1, the individual package 30, and the package 40, the use of cotton can be shown to the user. However, the topsheet 2 may not be a cotton sheet.

[0075] The absorber 10 is a member that absorbs and holds excrement inside. Figure 2 The absorber 10 has an absorbent core 11 and a core wrap sheet 12 that covers the absorbent core 11. The absorbent core 11 is formed by shaping pulp fibers, cellulose-based absorbent fibers, etc., which are liquid-absorbent fibers, into a predetermined shape. The core wrap sheet 12 is a liquid-permeable sheet member, and examples thereof include cotton paper. However, the structure of the absorber 10 is not limited to the above structure. For example, it may also be a SAP sheet in which a SAP layer is attached to a hydrophilic sheet, an air-laid sheet in which liquid-absorbent fibers are formed into a sheet by the air-laying method, etc.

[0076] The basic structure of the sanitary napkin 1 has been described above, but the structure of the sanitary napkin is not limited to the above structure. For example, it may also be a sanitary napkin that does not have a wing portion 1w.

[0077] <<Individual Package 30 of Sanitary Napkin>>

[0078] Figure 3 This is a plan view of the individual package 30 of the sanitary napkin in the unfolded state as viewed from the non-skin side. Figure 4 This is a plan view of the sanitary napkin individual package 30 in the process of being unfolded as viewed from the skin side. Figure 5 It is a top view of the individual package 30 of the sanitary napkin.

[0079] The independent package 30 of the sanitary napkin 1 (hereinafter also referred to as "independent package 30") is formed by independently packaging the sanitary napkin 1 with a packaging sheet 31, and comprises the sanitary napkin 1, the packaging sheet 31, a fixing belt 32, and peeling sheets 33 and 34. The packaging sheet 31 is a rectangular sheet member, and examples thereof include resin film, non-woven fabric, paper, and sheets obtained by laminating and compounding the above materials. The length direction of the packaging sheet 31 corresponds to the length direction of the sanitary napkin 1, and the width direction of the packaging sheet 31 as the short side direction corresponds to the width direction of the sanitary napkin 1. The fixing belt 32 is provided at the end of the length direction of the packaging sheet 31.

[0080] like Figure 3 As shown, a plurality of adhesive portions 8 and 9 formed by coating adhesive or the like are provided on the non-skin side of the sanitary napkin 1 (i.e., the non-skin side of the backsheet 4). A plurality of rectangular adhesive portions 8 extending in the length direction are arranged in the width direction on the main body of the sanitary napkin 1. The main body of the sanitary napkin 1 is fixed to the inner side of the wearer's underwear by using the adhesive portions 8 of the main body. In addition, a plurality of rectangular adhesive portions 9 extending in the length direction are also arranged in the width direction on the wing portion 1w. When the sanitary napkin 1 is worn, the wing portion 1w is bent and fixed to the outer side of the underwear by using the adhesive portions 9. In addition, the shape, number, and arrangement of the adhesive portions 8 and 9 are not limited to. Figure 3 The illustrated situation.

[0081] In the individual package 30, the non-skin side of the sanitary napkin 1 is fixed to the packaging sheet 31 via a release sheet 33. The release sheet 33 covers the adhesive portion 8 of the main body of the sanitary napkin 1, allowing the sanitary napkin 1 to be easily peeled off when the individual package 30 is opened. Figure 4 As shown, the wing 1w is folded inward in the width direction on the skin side of the sanitary napkin 1. The adhesive portion 9 of the wing 1w is covered by the release sheet 34. In addition, the sanitary napkin 1 can be fixed to the packaging sheet 31 directly without the release sheet 33, but can be releasably fixed to the packaging sheet 31.

[0082] Packaging sheet 31 and sanitary napkin 1 Figure 4 The two ends of the packaging sheet 31 folded together with the sanitary napkin 1 in the width direction are joined, such as Figure 5The joint portion 35 is formed as shown. As the joining method at the joint portion 35, known joining methods such as heat sealing, ultrasonic sealing, adhesives, and combinations of the above methods can be exemplified. In addition, a fixing band 32 is provided across the unsealed end of the packaging sheet 31. The user holds the fixing band 32 and unfolds the folding portions F1, F2 to open the individual package 30.

[0083] As described above, the individual package 30 of the sanitary napkin has been described, but the structure of the individual package 30 is not limited to the above structure. For example, the number of folding portions F1, F2 of the packaging sheet 31 is not limited to two, and may be one, or may be three or more. In addition, it may be that not only the packaging sheet 31 and the sanitary napkin 1 are folded at the folding portions F1, F2 along the width direction, but also the packaging sheet 31 and the sanitary napkin 1 are folded at the folding portion along the length direction. In addition, the packaging sheet 31 and the sanitary napkin 1 may be folded independently. That is, the packaging sheet 31 may be folded so as to enclose the pre-folded sanitary napkin 1.

[0084] <<Package 40 of Sanitary Napkin>>

[0085] Figure 6A is a perspective view of the package 40 of the sanitary napkin, Figure 6B is a view showing a state where the storage body 41 is opened. The package 40 of the sanitary napkin (hereinafter also referred to as "package 40") has a plurality of individual packages 30 of sanitary napkins and a storage body 41 for storing the plurality of individual packages 30 of sanitary napkins. In addition, the storage body is not limited to storing the individual packages of absorbent articles, and may directly store one or more absorbent articles that are not individually packaged, such as disposable diapers.

[0086] Figure 6A The exemplified storage body 41 has an up-down direction, a left-right direction, and a front-back direction, and has a main body portion 42 having a rectangular parallelepiped shape and a sealing member 43. The sealing member 43 is provided on the back surface 41B of the package 40 (storage body 41). Specifically, the sealing member 43 is provided at the upper part of the rear side of the storage body 41. A pinch portion 431 is provided at the center portion in the left-right direction of the sealing member 43. In addition, a cutting line 44 (for example, a tear line) is formed at the portion of the main body portion 42 covered by the sealing member 43. The user pinches the pinch portion 431 and pulls the sealing member 43, so that as Figure 6B shown, a part of the main body portion 42 is adhered to the sealing member 43 along the cutting line 44 to open, and an opening portion 45 serving as an outlet for the sanitary napkin 1 is formed.

[0087] In addition, Figure 6A The shape and structure of the exemplified storage body 41 are an example and are not limited thereto. For example, it may be a storage body having a rectangular parallelepiped shape without a sealing member 43, a self-standing bag type, a flat bag, or the like.

[0088] <<Decorative sheet 50 for absorbent products>>

[0089] Figure 7 It is the front view of the package 40. Figure 8 It is the rear view of the package 40. Figure 9 、 Figure 10A and Figure 10B are the figures for explaining the decorative sheet 50.

[0090] In the storage body 41 (specifically, the main body 42) of the package 40 of the sanitary napkin in the present embodiment, a decorative sheet 50 for absorbent products with decoration applied is used. As Figure 9 shown, the decorative sheet 50 has: a sheet 51; an adhesive layer 52 provided on the surface of the sheet 51; and a decorative layer 53 provided on the adhesive layer 52 and having a maximum thickness of 10 μm or less. Examples of the decorative layer 53 include metal foil, holographic foil, pigment foil, etc. (details will be described later).

[0091] The decorative layer 53 is provided at a position where the user can visually recognize it and protrudes from the surface of the sheet 51 in the thickness direction of the sheet 51. That is, the decorative layer 53 protrudes from the surface of the surrounding sheet 51 through the adhesive layer 52 formed in a manner of bulging on the surface of the sheet 51. Therefore, the decoration presented by the decorative layer 53 is visually recognized by the user as a three-dimensional decoration. In the following description, the portion where the decorative layer 53 overlaps with the adhesive layer 52 is also referred to as the "three-dimensional decoration portion 54". As Figure 9 、 Figure 10A shown, the portion (52E) of the adhesive layer 52 that does not overlap with the decorative layer 53 is not included in the three-dimensional decoration portion 54.

[0092] In the present embodiment, a three-dimensional decoration portion 54 (adhesive layer 52 + decorative layer 53) is provided on the outer side surface of the storage body 41 of the package 40, and the three-dimensional decoration portion 54 protrudes toward the outside of the storage body 41. Multiple curved patterns d1 ( Figure 7 ) are presented through the three-dimensional decoration portion 54, or the outline of a flower and the pattern d2 of petals ( Figure 7 ) are presented, or the pattern d3 of the sanitary napkin 1 is presented ( Figure 7 ).

[0093] Thus, even when the sheet 51 is decorated with a relatively thin decorative layer 53 (metal foil, holographic foil) having a maximum thickness of 10 μm or less, a three-dimensional decoration (three-dimensional decoration portion 54) can be formed by disposing the decorative layer 53 on top of the adhesive layer 52. A user who visually recognizes the three-dimensional decoration portion 54 provided on the storage body 41 of the package 40 is likely to receive the impression of a three-dimensional product. Therefore, the user is also likely to have the impression that the sanitary napkin 1 stored in the storage body 41 is a product that is three-dimensionally deformed and conforms to the body to prevent leakage. The three-dimensional decoration portion 54 is visually recognized by the user in a store where the package 40 is displayed, a bathroom where the package 40 is stored, etc. A user who visually recognizes the three-dimensional decoration portion 54 before using the sanitary napkin 1 can use the sanitary napkin 1 with confidence.

[0094] The type of decoration exhibited by the three-dimensional decoration portion 54 is not particularly limited, and examples thereof include letters, numbers, marks (e.g., musical note marks, indicia, etc.), figures (e.g., circles, polygons, hearts, stars, etc.), patterns (e.g., drawings representing the shapes of objects, animals, plants, people, etc.), geometric patterns, colors (portions having a predetermined color difference with respect to the color of the sheet 51), or decorations formed by combining the above decorations. Figure 7 The three-dimensional decoration portion 54 shown is an example, and the shape, number, size, and arrangement of the three-dimensional decoration portion 54 are not particularly limited.

[0095] The adhesive layer 52 is a layer formed of a raw material that maintains a raised state on the surface of the sheet 51 and has adhesiveness for bonding the sheet 51 and the decorative layer 53. As the raw material for forming the adhesive layer 52, an example is a colorless and transparent ultraviolet curable adhesive. However, it is not limited thereto, and for example, other photo-curable adhesives, etc. may also be used. It is possible to adjust the viscosity, etc. of the adhesive layer 52 so that the adhesive layer 52 does not easily penetrate into the sheet 51 and remains raised on the sheet 51. In addition, as the sheet 51 constituting the decorative sheet 50, examples include resin films, non-woven fabrics, papers, and sheets formed by laminating and combining the above materials.

[0096] The thickness of the decorative layer 53 is the length in the direction orthogonal to the surface of the decorative layer 53 (e.g., Figure 9 53t), and its maximum thickness (10 μm or less) can be confirmed by a known method. For example, the portion of the decorative sheet 50 (here, the storage body 41) where the three-dimensional decoration portion 54 is formed is determined, and the portion is cut at multiple arbitrary locations to form a plurality of samples. Then, using an optical microscope (e.g., VHX-900F manufactured by Keyence Corporation, etc.), the cut surfaces of the respective samples are magnified and photographed. For each photographed image of the cut surface, the maximum thickness of the decorative layer 53 is measured. The maximum value of the maximum thicknesses of the respective samples is set as the maximum thickness of the decorative layer 53, and it is confirmed that it is 10 μm or less.

[0097] In addition, the three-dimensional decoration portion 54 can be provided at any position on the outer side surface of the housing 41 of the package 40. Preferably, as Figure 7 shown, it is preferable that the three-dimensional decoration portion 54 is provided on the front surface (front face) 41F of the housing 41 of the package 40. In this way, in a store or the like, it is easy for the user to visually recognize the three-dimensional decoration portion 54. In addition, the front face of the housing 41 refers to the largest face among the plurality of faces of the housing 41, the face on which the sales name (brand name), the storage quantity, etc. are largely recorded, etc.

[0098] In addition, preferably, in the case of the package 40 having the sealing member 43, the sealing member 43 is provided on the back surface 41B of the housing 41 of the package 40, and the three-dimensional decoration portion 54 is not provided on the back surface 41B of the housing 41. When opening the sealing member 43, the user holds the back surface 41B of the housing 41, or the pulling force of the sealing member 43 acts on the back surface 41B of the housing 41. Therefore, by not providing the three-dimensional decoration portion 54 on the back surface 41B (the opening surface) of the housing 41, it is possible to prevent the three-dimensional decoration portion 54 from falling off and adhering to the user or the sanitary napkin 1 when opening.

[0099] Alternatively, instead of providing the three-dimensional decoration portion 54 on the package 40, the three-dimensional decoration portion 54 can be provided on the sanitary napkin 1 or the individual package 30 of the sanitary napkin. Alternatively, in addition to providing the three-dimensional decoration portion 54 on the package 40, the three-dimensional decoration portion 54 can also be provided on the sanitary napkin 1 or the individual package 30 of the sanitary napkin. That is, the decorative sheet 50 can be used for at least any one of the sanitary napkin 1, the individual package 30 of the sanitary napkin, and the package 40 of the sanitary napkin.

[0100] In the case of the individual package 30, the decorative sheet 50 can be used for the packaging sheet 31, the release sheets 33, 34, etc. Specifically, Figure 5 the pattern d4 on the outer side surface of the packaging sheet 31 shown in Figure 4 and the pattern d5 on the release sheet 34 shown in

[0101] can be set as the three-dimensional decoration portion 54. In this way, when the user takes out the individual package 30 from the package 40 and opens the individual package 30, the user can visually recognize the three-dimensional decoration portion 54. Figure 3 In the case of the sanitary napkin 1, the decorative sheet 50 can be used for the bottom sheet 4, the wing 5, etc. Specifically,

[0102] In the above-described case, the user can visually recognize the three-dimensional decorative portion 54 even before using the sanitary napkin 1. Therefore, the user is likely to have the impression that the sanitary napkin 1 is also three-dimensionally deformed and conforms, and can use it with confidence.

[0103] In addition, preferably, the decorative layer 53 is a layer formed of any one of a metal foil, a holographic foil, and a pigment foil. In this way, the aesthetic property of the three-dimensional decorative portion 54 can be improved. Specifically, according to the three-dimensional decorative portion 54 formed of a metal foil or a holographic foil, it is presented in a color with a metallic luster such as gold or silver, and is easily noticeable. Thus, a user who visually recognizes the storage body 41 of the package 40 is likely to focus on the shiny three-dimensional decorative portion 54 and is likely to have the impression that the sanitary napkin 1 is also three-dimensionally deformed. In addition, through the three-dimensional decorative portion 54 having a metallic luster, the user is also likely to receive the impression of a high-class product. Therefore, the user is likely to have the impression that the sanitary napkin 1 stored in the storage body 41 is also a high-quality product (for example, not easily leaking, comfortable to wear, etc.), and can use the sanitary napkin 1 with confidence. On the other hand, the three-dimensional decorative portion 54 formed of a pigment foil becomes a matte decoration with dulling, and can give the user the impression of a product with a stable sense of security. In addition, since there is no metallic luster, the user is likely to have a sense of security that no foreign substances such as metals are mixed in the stored sanitary napkin 1.

[0104] Examples of the metal foil include a metal foil obtained by beating a metal to thinly and flatly extend it, a thin and flat sheet containing a metal (a coating film of a metal powder pigment, a metal vapor deposition film), and a sheet obtained by laminating a synthetic resin layer on the above-described member. Examples of the metal contained in the metal foil include gold, silver, copper, tin, brass, aluminum, and the like.

[0105] The holographic foil is a thin and flat sheet having the property of reflecting incident light in color using a prism effect. By providing a fine concavo-convex pattern on the surface, a person who sees the reflected light can visually recognize a specific pattern.

[0106] Examples of the pigment foil include a sheet formed by laminating a coating film of a pigment on a synthetic resin layer. Examples of the color of the pigment include red, blue, yellow, black, white, etc., and there is no particular limitation. In addition, the decorative layer 53 may also be a foil material other than a metal foil, a holographic foil, and a pigment foil.

[0107] In addition, preferably, the maximum thickness of the adhesive layer 52 is larger than the maximum thickness of the decorative layer 53. For example, it is preferable that the thickness of the adhesive layer 52 is in the range of about 10 to 80 μm and the thickness of the decorative layer 53 is in the range of about 4 to 6 μm. In this way, the decorative layer 53 having a smaller thickness can protrude further from the surface of the surrounding sheet 51. Therefore, the three-dimensional decorative portion 54 becomes more three-dimensional, and the user can easily recognize the case where a three-dimensional decoration is provided. In addition, as described above, the thickness of the decorative layer 53 (for exampleFigure 9 The length of Figure 9 is set to be the length in the direction orthogonal to the surface of the decorative layer 53. The thickness of the adhesive layer 52 (for example Figure 9 the thickness t2) is set to be the length in the thickness direction of the sheet 51.

[0108] In addition, ultraviolet rays are irradiated onto the adhesive layer 52 which is an ultraviolet curable adhesive, and the decorative layer 53 is adhered to the adhesive layer 52 by using the adhesiveness of the locally cured adhesive layer 52. As the cross-sectional shape of the three-dimensional decorative portion 54, examples can include Figure 9 , Figure 10A and Figure 10B the shapes shown. The illustrated three-dimensional decorative portion 54 has a length in a predetermined direction. Preferably, as shown in the figure, the three-dimensional decorative portion 54 (the portion where the decorative layer 53 and the adhesive layer 52 overlap) has portions with different thicknesses. For example, in Figure 9 the three-dimensional decorative portion 54, the central portion in the predetermined direction is recessed and the thickness becomes thinner. In Figure 10A the three-dimensional decorative portion 54, the thickness of the end portion in the predetermined direction is thinner than the thickness of the adjacent portion.

[0109] In this way, the height of the three-dimensional decorative portion 54 is locally different, making it easier to visually recognize the three-dimensional decorative portion 54 three-dimensionally. Thus, a user who visually recognizes the three-dimensional decorative portion 54 is likely to have the impression that the sanitary napkin 1 is also deformed three-dimensionally and fits closely. In addition, the visual appearance of the three-dimensional decorative portion 54 changes according to the angle. Therefore, the user is likely to have the impression that the sanitary napkin 1 does not deform uniformly but deforms along the body and follows the movements of the body.

[0110] In addition, preferably, as Figure 9 , Figure 10A and Figure 10B shown, in the three-dimensional decorative portion 54, the thickness of the end portion 54E in the predetermined direction is smaller than the thickness of the portion 54I adjacent to the end portion 54E and closer to the inside in the predetermined direction.

[0111] In this way, the three-dimensional decorative portion 54 bulges from the end portion 54E toward the portion 54I on the inside in the predetermined direction and is visually recognized, making it easier to visually recognize the three-dimensional decorative portion 54 three-dimensionally. Therefore, a user who visually recognizes the three-dimensional decorative portion 54 is likely to have the impression that the sanitary napkin 1 is also deformed three-dimensionally and fits closely.

[0112] In addition, it can be that, as Figure 9 and Figure 10BAs shown, in the three-dimensional decoration portion 54, the central portion in a predetermined direction (toward the sheet 51 side in the thickness direction) is recessed. In this way, the surface of the three-dimensional decoration portion 54 becomes an uneven shape, making it easier to visually recognize the three-dimensional decoration portion 54 three-dimensionally. As a result, the user who visually recognizes the three-dimensional decoration portion 54 is likely to have the impression that the sanitary napkin 1 is also deformed three-dimensionally and fits. In addition, the user is likely to have the impression that the sanitary napkin 1 is not deformed uniformly but deforms along the body and follows the movements of the body.

[0113] However, it is not limited to the above situation, and it may also be, as Figure 10A shown, the thickness of the portion of the three-dimensional decoration portion 54 other than the end portions in the predetermined direction is constant, or it may also be that the central portion in the predetermined direction of the three-dimensional decoration portion 54 bulges convexly and has a larger thickness.

[0114] In addition, it may be, as Figure 9 and Figure 10A shown, the adhesive layer 52 has a protruding portion 52E that protrudes toward one side in the predetermined direction with respect to the decorative layer 53. The adhesive layer 52 may protrude toward both sides in the predetermined direction as shown in the figure, or may protrude only toward one side in the predetermined direction. And preferably, the maximum thickness t1 of the protruding portion 52E of the adhesive layer 52 is smaller than the maximum thickness t2 of the portion of the adhesive layer 52 that overlaps with the decorative layer 53 (t1 < t2).

[0115] Since the thickness of the protruding portion 52E of the separate adhesive layer 52 is small, it is possible to prevent the visual recognition of the decorative layer 53 from being obstructed by the protruding portion 52E. In addition, when an external force acts on the decorative sheet 50 (here, the storage body 41), the force is likely to be applied to the protruding portion 52E that is the end portion of the adhesive layer 52. However, since the adhesive layer 52 is formed of a raw material having adhesiveness and has elasticity, it is easily deformed following the sheet 51. Therefore, the situation where the adhesive layer 52 peels off from the sheet 51 can be suppressed. In particular, if the thickness of the protruding portion 52E is small, the protruding portion 52 is more easily deformed following the sheet 51. In addition, the decorative layer 53 is not located at the end portion where the force is easily applied, so that the peeling between the adhesive layer 52 and the decorative layer 53 and the cracking of the decorative layer 53 can be suppressed. The user who visually recognizes the three-dimensional decoration portion 54 with maintained quality is likely to have the impression that the sanitary napkin 1 is also a high-quality product.

[0116] In addition, preferably, the length L1 of the protruding portion 52E in the predetermined direction is shorter than the length L2 of the portion of the adhesive layer 52 that overlaps with the decorative layer 53 in the predetermined direction (L1 < L2).

[0117] As described above, by providing the protruding portion 52E, peeling of the adhesive layer 52 and the decorative layer 53 and cracking of the decorative layer 53 can be suppressed. However, by not making the protruding portion 52E unnecessarily long, a decrease in aesthetics (such as a metallic luster) caused by the decorative layer 53 can be prevented.

[0118] In addition, not limited to the above case, it may be that, as Figure 10B shown, the adhesive layer 52 does not have the protruding portion 52E. That is, it may be that the entire surface area of the adhesive layer 52 is covered by the decorative layer 53.

[0119] So far, the relationships between the thicknesses and lengths of the respective parts have been described, and the above thickness and length comparisons can be made by known methods. For example, the comparison can be made by visually observing the target part, or can be made based on an image obtained by magnifying and photographing the target part using an optical microscope. In addition, the comparison can also be made according to a cross-sectional image obtained by cutting the target part. The thickness and length comparisons of the respective parts described below can also be made by the same method.

[0120] In addition, as Figure 1 and Figure 2 shown, the sanitary napkin 1 has a compressed portion 20 compressed along the thickness direction from the skin side of the surface sheet 2. Therefore, a user who sees the skin side of the sanitary napkin 1 visually recognizes the compressed portion 20. In the compressed portion 20, the thickness of the sanitary napkin 1 is thinner and the density of the material (fiber) constituting the sanitary napkin 1 is higher than that of the surroundings. In the Figure 2 illustrated compressed portion 20, the surface sheet 2, the intermediate sheet 3, and the absorber 10 (partially or entirely) are compressed along the thickness direction. However, the compressed portion 20 only needs to compress the sanitary napkin 1 along the thickness direction from the skin side of the surface sheet 2, and for example, it may not reach the absorber 10.

[0121] Figure 1 The illustrated sanitary napkin 1 has a linear compressed portion 21 formed by arranging dot-like compressed portions in a line and a plurality of dot-like compressed portions 22 arranged discretely. However, the number, shape, and arrangement of the compressed portions 20 are not particularly limited. In addition, the compressed portion 20 may also be a compressed portion formed by continuously compressing a linear compressed portion in a groove shape.

[0122] And preferably, the minimum width of the decorative layer 53 (that is, the minimum width of the three-dimensional decorative portion 54) of the decorative sheet 50 (here, the storage body 41) is smaller than the minimum width W20 of the compressed portion 20 ( Figure 2 ). A user who sees the decorative layer 53 with a smaller width is likely to receive the impression of a delicate (exquisite) product. Thus, the user is likely to also have the impression that the sanitary napkin 1 is a product with a soft skin feel that can be flexibly deformed, and can use it with confidence.

[0123] In addition, when a user focuses on the three-dimensionally protruding decorative layer 53 and views the skin side of the sanitary napkin 1, it is easy to recognize the three-dimensionally recessed compression part 20. In particular, a user who visually recognizes the decorative layer 53 with a small width can easily recognize the compression part 20 with a sufficient width. Since the thickness of the sanitary napkin 1 is thin at the compression part 20, the user can more easily receive the impression that the sanitary napkin 1 is three-dimensionally deformed along the body starting from the compression part 20.

[0124] In addition, regarding the width W53 of the decorative layer 53, for example, when the decorative layer 53 (three-dimensional decorative part 54) extends linearly as in the pattern d1 of the curve shown in Figure 7 or when the decorative layer 53 forms the outline of a pattern (example: sanitary napkin), the direction orthogonal to the extending direction of the decorative layer 53 is set as the width direction. In addition, when the pattern represented by the decorative layer 53 has a linear part (example: part of the stem of cotton), the direction orthogonal to the extending direction of the linear part is set as the width direction. In addition, when the pattern (example: heart) represented by the decorative layer 53 does not have a linear part, the short side direction of the rectangular shape circumscribing the three-dimensional decorative part 54 in a top view is set as the width direction. The length of the decorative layer 53 in the above width direction is set as the width. In addition, when the decorative layer 53 (three-dimensional decorative part 54) is a character or a number, the thickness of the line forming the character or the like is set as the width of the decorative layer 53. In addition, the predetermined direction in this specification can be either the width direction along the width of the decorative layer 53 or the direction intersecting the width direction. Regarding the width W20 of the compression part 20 as well, the length in the direction orthogonal to the extending direction of the linear compression part 21 is set as the width, and the length in the short side direction of the rectangular shape circumscribing the dot-shaped compression part 22 in a top view is set as the width.

[0125] In addition, Figure 2 The exemplified sanitary napkin 1 has an absorbent core 11 containing a superabsorbent polymer 111. That is, the absorbent core 11 is formed by adding the superabsorbent polymer 111 to a liquid-absorbent fiber such as pulp fiber and shaping it into a predetermined shape. In this case, it is preferable that the minimum width (W53) of the decorative layer 53 is smaller than the average particle diameter of the superabsorbent polymer 111 before absorbing liquid.

[0126] A user who sees the decorative layer 53 with a small width is likely to receive the impression of a delicate product and is likely to have the impression that the sanitary napkin 1 also has a soft skin feel that deforms flexibly. On the other hand, a user who holds the sanitary napkin 1 can feel the presence and size of the superabsorbent polymer 111 through the surface sheet 2 and the back sheet 4. Thus, the user can have the impression that the superabsorbent polymer 111 reliably absorbs excreted liquid and is not likely to leak.

[0127] The measurement of the average particle size of the superabsorbent polymer 111 can be carried out by a well-known method. Preferably, the following measurement can be performed on a plurality of sanitary napkins 1, and the average value of the average particle sizes obtained in the multiple measurements (for example, N = 5 times) can be calculated and compared.

[0128] (1) In a thermo-hygrostat chamber at a temperature of 20 ± 5°C and a humidity of 65 ± 5% RH, prepare a digital microscope manufactured by Keyence Corporation (trade name: VHX-1000, zoom lens: ×20 to ×200 or an equivalent lens) and the attached software.

[0129] (2) Leave a plurality of superabsorbent polymers 111 taken out from the target sanitary napkin 1 in the above thermo-hygrostat chamber for 24 hours.

[0130] (3) Take pictures of the superabsorbent polymer 111 using the above digital microscope.

[0131] (4) The particle size of each superabsorbent polymer 111 refers to the circular equivalent diameter calculated based on the projected area of the projected image of each superabsorbent polymer 111. Specifically, measure the projected area A of each superabsorbent polymer 111 using the attached software, and calculate the circular equivalent diameter CD (diameter) of each superabsorbent polymer 111 (CD = 2 × (A / π) 1 / 2 ).

[0132] (5) The average particle size of the superabsorbent polymer 111 refers to the median particle size in the particle size distribution (based on the number). Specifically, use the attached software to create a particle size distribution (based on the number) of the circular equivalent diameters CD of 1000 superabsorbent polymers, and determine the median particle size based on this particle size distribution (based on the number), which is set as the average particle size.

[0133] However, the excretion amount of the wearer of the sanitary napkin 1 is less than that of the wearers of disposable diapers and urine pads. Therefore, the absorbent core 11 may not contain the superabsorbent polymer 111.

[0134] In addition, preferably, when the sanitary napkin 1 has a compression part 20, the maximum thickness t3 ( Figure 9 ) of the three-dimensional decoration part 54, which is the part where the decoration layer 53 overlaps with the adhesive layer 52, is smaller than the minimum depth d ( Figure 2 ) of the compression part 20 (t3 < d).

[0135] By appropriately suppressing the maximum thickness t3 of the three-dimensional decorative portion 54 so as not to be too thick, it is possible to prevent the three-dimensional decorative portion 54 from getting caught. As a result, it is possible to suppress the peeling of the three-dimensional decorative portion 54 from the sheet 51. In this way, a user who visually recognizes the three-dimensional decorative portion 54 with maintained quality is likely to have the impression that the sanitary napkin 1 is also a high-quality product. On the other hand, the user can easily recognize the compression portion 20 with sufficient depth. Therefore, it is easier for the user to receive the impression that the sanitary napkin 1 is three-dimensionally deformed along the body starting from the compression portion 20. In fact, the absorbent body 10 is compressed to a relatively high stiffness, so that the sanitary napkin 1 is easily bent starting from the compression portion 20 and is easily three-dimensionally deformed.

[0136] Alternatively, the decorative sheet 50 may not only have the three-dimensional decorative portion 54 but also have a flat printed layer 60 provided on the surface of the sheet 51, that is, a normal printed layer 60 formed by printing with ink. In this case, the three-dimensional decorative portion 54 (the adhesive layer 52 and the decorative layer 53) may be provided on top of a partial printed layer 60. For example, in Figure 7 , the three-dimensional decorative portion 54 having the same curved pattern d1 is provided overlapping on the printed layer 60 which is a plurality of curved patterns p1. In addition, the three-dimensional decorative portion 54 having the pattern d2 of petals is provided overlapping on the printed layer 60 representing the color p2 of the flower.

[0137] In this way, the local bulge of the decoration presented by the printed layer 60 is visually recognized, and the user can further appreciate the decoration. In addition, when the local part of the decoration is the three-dimensional decorative portion 54, the three-dimensional decorative portion 54 is more likely to be conspicuous compared to the case where all the decorations are the three-dimensional decorative portions 54. Therefore, it is easy for the user to focus on the three-dimensional decorative portion 54 and is likely to have the impression that the sanitary napkin 1 is also three-dimensionally deformed. In addition, since the printed layer 60 is covered by the three-dimensional decorative portion 54, the printed layer 60 is less likely to peel off. Conversely, even if the three-dimensional decorative portion 54 peels off from the sheet 51, the printed layer 60 can still be visually recognized. As a result, it is possible to suppress the deterioration of the appearance quality of the decorative sheet 50 and also ensure the user's impression of the high quality of the sanitary napkin 1.

[0138] As Figure 2 shown, the sanitary napkin 1 has an absorbent core 11 and a core wrapper sheet 12 covering the surface of the absorbent core 11. In this case, it is preferable that the elongation strength of the portion of the adhesive layer 52 overlapping with the decorative layer 53 is higher than the elongation strength of the core wrapper sheet 12 in the width direction of the sanitary napkin 1.

[0139] Here, when the decorative sheet 50 is used for the storage body 41 of the package body 40, Figure 6A and Figure 6BThe vertical and horizontal directions (or the vertical and front-rear directions) of the storage body 41 shown correspond to the longitudinal and lateral directions that are orthogonal to each other of the decorative sheet 50. Further, when the decorative sheet 50 is used as the packaging sheet 31 of the independent package 30, Figure 3 the length direction and the width direction shown correspond to the longitudinal and lateral directions of the decorative sheet 50. The decorative sheet 50 has a direction with higher elongation strength in the longitudinal and lateral directions.

[0140] Moreover, the elongation amount of the decorative sheet 50 when the adhesive layer 52 of the three-dimensional decoration portion 54 breaks when the decorative sheet 50 is elongated along the direction with higher elongation strength in the longitudinal and lateral directions is defined as the first elongation amount (mm), and the elongation amount of the core wrapper sheet 12 when the core wrapper sheet 12 breaks when the core wrapper sheet 12 is elongated along the width direction of the sanitary napkin 1 is defined as the second elongation amount (mm). At this time, preferably, the first elongation amount is larger than the second elongation amount. In addition, when the adhesive layer 52 breaks means any earlier moment among when cracks start to occur in the adhesive layer 52 and when the adhesive layer 52 starts to peel off from the decorative sheet 50. Similarly, when the core wrapper sheet 12 breaks means when cracks and breakages start to occur in the core wrapper sheet 12.

[0141] The core wrapper sheet 12, which is a material constituting the sanitary napkin 1, is formed with a strength that will not break during the wearing of the sanitary napkin 1. Preferably, compared with this core wrapper sheet 12, the strength of the adhesive layer 52 of the three-dimensional decoration portion 54 against the elongation force is stronger and is not easily broken. In this way, even if the decorative sheet 50 (here, the storage body 41 of the encapsulation body 40) elongates at various times such as during manufacturing, during circulation, and when used by the user, it is possible to suppress the situation where the adhesive layer 52 breaks and peels off from the sheet 51. The appearance quality of the three-dimensional decoration portion 54 can be maintained, so that the user is likely to receive the impression of a high-quality product and is likely to also have the impression that the sanitary napkin 1 has high-quality performance (such as performance of not leaking and comfortable wearing feeling).

[0142] The comparison method of the elongation amount at break can be carried out by using a tensile testing machine (example: model 5965 manufactured by Instron Corporation or an equivalent instrument) and by a known method.

[0143] First, determine the direction with higher elongation strength in the longitudinal and transverse directions of the decorative sheet 50. To this end, the decorative sheet 50 is cut into a predetermined size to form a sample. A sample with the longitudinal direction of the decorative sheet 50 (example: the up-down direction of the package 40) as the measurement direction and a sample with the transverse direction of the decorative sheet 50 (example: the left-right direction of the package 40) as the measurement direction are made. The sample is set as a rectangular shape (for example, the length in the measurement direction is 100 mm × the width is 25 mm) with the elongation measurement direction as the length direction. Then, hold both ends of the sample with the chucks of a tensile testing machine (the distance between the chucks is 50 mm), and compare the tensile strength (N) when the sample is elongated by a predetermined length at a tensile speed of 100 mm / minute. The direction in which the sample with higher tensile strength is elongated is the direction with higher elongation strength.

[0144] Next, cut the decorative sheet 50 into a predetermined size to form a sample including the three-dimensional decorative portion 54. The size of the sample is set as a rectangular shape (for example, the length in the measurement direction is 100 mm × the width is 25 mm) with the direction with higher elongation strength in the longitudinal and transverse directions of the decorative sheet 50 as the length direction (measurement direction). In addition, separate each material from the sanitary napkin 1 using cold spraying or the like, and take out the core sheet 12. The core sheet 12 is also cut into a predetermined size (a rectangular shape with the elongation measurement direction (the width direction of the sanitary napkin 1) as the length direction, the length is 100 mm × the width is 25 mm) to form a sample. Then, hold both ends of each sample with the chucks of a tensile testing machine (the distance between the chucks is 50 mm), and while observing the sample, elongate it at a tensile speed of 100 mm / minute. Then, find the elongation amount of the sample (the first elongation amount) when the adhesive layer 52 of the three-dimensional decorative portion 54 breaks and the elongation amount of the sample (the second elongation amount) when the core sheet 12 breaks, and compare them.

[0145] In addition, preferably, the decorative sheet 50 has a plurality of three-dimensional decorative portions 54 with different elongation amounts at the breakage of the adhesive layer 52. That is, when the decorative sheet 50 has the first adhesive layer 52 and the second adhesive layer 52, the following is preferable. When the decorative sheet 50 is elongated along the direction with higher elongation strength in the longitudinal and transverse directions of the decorative sheet 50, it is preferable that the elongation amount of the decorative sheet 50 when the first adhesive layer 52 breaks is different from the elongation amount of the decorative sheet 50 when the second adhesive layer 52 breaks.

[0146] For example, form Figure 7The decorative sheet 50 of the package body 40 has an adhesive layer 52 (first adhesive layer) forming a pattern d1 with a curve and an adhesive layer 52 (second adhesive layer) forming a pattern of the sanitary napkin. The width of the adhesive layer 52 of the curve pattern d1 is different from the width of the adhesive layer 52 of the sanitary napkin pattern. Therefore, it is possible to make the elongation amount (ease of elongation) at the time of fracture of the adhesive layer 52 of the curve pattern d1 and the adhesive layer 52 of the sanitary napkin pattern different. In addition, although not shown, by making the thickness of the adhesive layer 52 in the adhesive layer 52 of a certain three-dimensional decorative part 54 and the adhesive layer 52 of another three-dimensional decorative part 54 different, or making the planar shape (for example, the presence or absence of a curved part and a straight part) of the adhesive layer 52 different, it is possible to make the elongation amount (ease of elongation) at the time of fracture different.

[0147] The adhesive layer 52 with a larger elongation amount at the time of fracture is a part that is easy to elongate and not easy to break. On the contrary, the part with a smaller elongation amount at the time of fracture is a part where the adhesive layer 52 is difficult to elongate. In this way, the adhesive layer 52 has a part that is easy to elongate and a part that is difficult to elongate, so that when an external force is applied to the decorative sheet 50, the visual appearance changes according to the difference in elongation of the plurality of three-dimensional decorative parts 54. Thereby, it is easy for the user to focus on the three-dimensional decorative part 54.

[0148] In addition, regarding the method for measuring the elongation amount at the time of fracture of the first adhesive layer 52 and the second adhesive layer 52, it can be carried out by the same method as the method using a tensile testing machine described above. In short, a sample containing the first adhesive layer 52 (three-dimensional decorative part 54) and a sample containing the second adhesive layer 52 (three-dimensional decorative part 54) are formed, and each sample is elongated and the elongation amount of the sample at the time of fracture of the adhesive layer 52 is obtained and compared.

[0149] In addition, as Figure 6A shown, in the package body 40 (accommodating body 41), a coded identification part 61 (barcode, QR code (registered trademark), etc.) read by an optical reading device is mostly provided. When the decorative sheet 50 is used for the package body 40 and has the coded identification part 61, preferably, the coded identification part 61 is formed by a printing layer 60 that does not overlap with the adhesive layer 52 and the decorative layer 53.

[0150] Compared with the three-dimensional decorative part 54, the outline of the decoration formed by the printing layer 60 based on ink is clearer. Therefore, since the coded identification part 61 is formed not by the three-dimensional decorative part 54 but by the flat printing layer 60, the visual recognition is improved and it can be accurately read by the reading device.

[0151] In addition, as Figure 6AAs shown, there is the following situation: in the package 40, information related to the sanitary napkin 1 stored therein is centrally recorded in a table or the like. The information identification group 63 (for example, information such as the sales name, constituent materials, usage method, manufacturer and seller, etc.) is identified by relatively small characters or the like. Therefore, the information identification group 63 is not formed by the three-dimensional decoration part 54 either, but by the flat printing layer 60 based on ink, so that the user can easily read the information identification group 63.

[0152] In addition, as Figure 7 shown, in the package 40 (storage body 41), an article identification part 62 indicating the sanitary napkin 1 stored therein is mostly provided. When the decorative sheet 50 is used for the package 40 and has the article identification part 62, preferably, the article identification part 62 is formed by the three-dimensional decoration part 54 (adhesive layer 52 and decoration layer 53).

[0153] In this way, when the user sees the three-dimensionally marked article identification part 62, it is easy to give the impression that the actual sanitary napkin 1 stored therein is also three-dimensionally deformed and fitted. In addition, in the case of a package 40 as exemplified in Figure 7 and Figure 8 that has a plurality of article identification parts 62, at least one of the plurality of article identification parts 62 may be formed by the three-dimensional decoration part 54. The article identification part 62 on the back surface 41B of the storage body 41 provided with the sealing member 53 is formed by the printing layer 60, so that the peeling off of the three-dimensional decoration part 54 when the package is opened can be suppressed.

[0154] In addition, as Figure 8 shown, there is the following situation: in the package 40, a sanitary napkin group identification part 64 for displaying products under the same brand name is provided. In the sanitary napkin group identification part 64, the shapes of other sanitary napkins with different sizes and performances (presence or absence of wings 1w, daily use, night use, etc.) are shown together with the sanitary napkin 1 stored therein. In Figure 8 , since the sanitary napkin group identification part 64 is provided on the back surface 41B (opening surface) of the storage body 41, it is formed by the printing layer 60, but it may also be that the sanitary napkin group identification part 64 is formed by the three-dimensional decoration part 54. In particular, it is preferable that the sanitary napkin group identification part 64 is formed by the three-dimensional decoration part 54 when it is provided on a surface other than the opening surface of the package 40. In this way, it is possible to give the user the impression that not only the stored sanitary napkin 1 is three-dimensionally deformed but also other sanitary napkins are three-dimensionally deformed.

[0155] However, it is not limited to the above situation. Each of the identifications (61 to 64) provided on the package 40 may be formed by the three-dimensional decoration part 54 or by the flat printing layer 60 based on ink.

[0156] Figure 11 is a front view of a part of the individual package 30. In Figure 11In this case, the decorative sheet 50 is used for the packaging sheet 31 of the individual package 30 of the sanitary napkin. A three-dimensional decorative portion 54 is provided on the outer side surface of the packaging sheet 31. In addition, Figure 11 Joint portions 35 are formed at both end portions in the width direction of the illustrated individual package 30. At the joint portions 35, the opposing packaging sheets 31 are joined by welding portions 36. Thus, in the case where the packaging sheet 31 has the welding portion 36 that houses and seals the sanitary napkin 1 therein, it is preferable that the welding portion 36 can be visually recognized when looking down at the decorative layer 53 of the packaging sheet 31. Looking down means observing the individual package 30 in the thickness direction of the packaging sheet 31 as Figure 5 shown.

[0157] At the welding portion 36, the thickness of the packaging sheet 31 becomes thinner, and the welding portion 36 is recessed in the thickness direction of the individual package 30 compared to the surroundings. Therefore, the user visually recognizes the welding portion 36 recessed in the thickness direction while also visually recognizing the decorative layer 53 (three-dimensional decorative portion 54) protruding in the thickness direction. Therefore, the height of the decorative layer 53 is prominent, and it is easier to visually recognize the three-dimensional decorative portion 54 three-dimensionally. Therefore, the user is likely to have an impression that the sanitary napkin 1 housed in the individual package 30 is also three-dimensionally deformed and fitted.

[0158] In addition, although not shown, there is a case where a welding portion for sealing the storage body 41 is also provided in the encapsulation body 40 (storage body 41) of the sanitary napkin. Therefore, in the case where the decorative sheet 50 is used for the storage body 41, it is preferable that the welding portion and the three-dimensional decorative portion 54 can be visually recognized simultaneously when looking down at the storage body 41 (when observing the storage body 41 along the thickness direction of the decorative sheet 50).

[0159] ===Manufacturing method of the decorative sheet 50===

[0160] Figure 12 FIG. is a diagram for explaining the manufacturing method of the decorative sheet 50. The aforementioned decorative sheet 50 can be manufactured using the Figure 12 illustrated manufacturing apparatus 70. The manufacturing apparatus 70 includes a conveying mechanism 71, an ink ejection device 72, an adhesive ejection device 73, a first irradiation device 74, a decorative layer conveying mechanism 75, and a second irradiation device 76.

[0161] The conveying mechanism 71 is a mechanism for conveying the continuous body 51c of the sheet 51 along the conveying direction. As the conveying mechanism 71, the conveying rollers shown in Figure 12 FIG., a conveyor belt (not shown), etc. can be exemplified. The ink ejection device 72 ejects ink onto the continuous body 51c of the sheet 51 conveyed along the conveying direction by the conveying mechanism 71 to form a flat normal printed layer 60.

[0162] On its downstream side, the adhesive ejecting device 73 directly ejects an adhesive for forming the adhesive layer 52 onto the continuum 51c of the sheet 51, or ejects an adhesive for forming the adhesive layer 52 onto the printing layer 60. In the present embodiment, a colorless and transparent ultraviolet curable adhesive is ejected. Thereafter, the first irradiation device 74 irradiates light (here, ultraviolet rays) for curing the adhesive layer 52, thereby curing the adhesive layer 52. However, the first irradiation device 74 irradiates ultraviolet rays to such an extent that the adhesive layer 52 is not completely cured. In this way, while fixing the shape of the adhesive layer 52, adhesiveness is ensured. To this end, the intensity and irradiation time of the ultraviolet rays are adjusted.

[0163] In the present embodiment, as the ink ejecting device 72 and the adhesive ejecting device 73, an inkjet device is exemplified. However, it is not limited thereto, and for example, various printing methods (liquid coating methods) such as intaglio printing and offset printing can also be used to form the printing layer 60 and the adhesive layer 52.

[0164] Thereafter, the decorative layer conveying mechanism 75 supplies the continuum 53c of the decorative layer 53 onto the adhesive layer 52. As the decorative layer conveying mechanism 75, a device having an unillustrated feeding roller for feeding the continuum 53c of the decorative layer 53, a conveying roller 751, and an unillustrated winding roller for winding the remaining portion of the continuum 53c of the decorative layer 53 can be exemplified.

[0165] In the direction orthogonal to the conveying direction, the length of the continuum 53c of the decorative layer 53 is set to be equal to or greater than the length of the region where the adhesive layer 52 is formed. That is, it is set such that all of the one or more adhesive layers 52 formed on the continuum 51c of the sheet 51 are covered by the continuum 53c of the decorative layer 53. In addition, the continuum 53c of the decorative layer 53 is supplied in contact with the surface of the adhesive layer 52. Since the adhesive layer 52 has adhesiveness, the continuum 53c of the decorative layer 53 adheres to the adhesive layer 52. During this time, the continuum 53c of the decorative layer 53 and the adhesive layer 52 are also conveyed, and the decorative layer 53 adhered to the adhesive layer 52 and the decorative layer 53 not in contact with the adhesive layer 52 are separated. The remaining portion of the continuum 53c of the decorative layer 53 not adhered to the adhesive layer 52 is wound around the winding roller and recovered.

[0166] Finally, the second irradiation device 76 irradiates light (here, ultraviolet rays) for curing the adhesive layer 52, and through the decorative layer 53, the adhesive layer 52 is completely cured. Thereby, the adhesive layer 52 and the decorative layer 53 are firmly adhered and integrated to form the three-dimensional decorative portion 54.

[0167] According to the above manufacturing method, a decorative layer 53 can be provided on the adhesive layer 52, and a three-dimensional decorative portion 54 in which the decorative layer 53 protrudes from the surface of the sheet 51 in the thickness direction of the sheet 51 can be formed. By using the decorative sheet 50 having the three-dimensional decorative portion 54 in any one of the sanitary napkin 1, the individual package 30 of the sanitary napkin, and the package 40 of the sanitary napkin, an impression that the product is three-dimensional can be given to the user. However, the above manufacturing method is an example, and the manufacturing method of the decorative sheet 50 is not particularly limited.

[0168] As described above, the above embodiments are for easily understanding the present invention and are not for limitatively interpreting the present invention. It goes without saying that the present invention can be changed and improved without departing from its gist, and the present invention includes its equivalents.

Claims

1. A decorative sheet for an absorbent product, characterized in that: The decorative sheet for absorbent products is used for any one of absorbent articles, individual packages of absorbent articles, and packages of absorbent articles, and is provided with decoration. The decorative sheet for absorbent products has: piece; an adhesive layer provided on a surface of the sheet; and A decorative layer is provided on the adhesive layer and has a maximum thickness of 10 μm or less, The decorative layer is provided at a position visually recognizable by a user, and protrudes from the surface of the sheet in the thickness direction of the sheet.

2. The decorative sheet for absorbent products according to claim 1, characterized in that: A portion where the decorative layer and the adhesive layer overlap each other has a portion with different thicknesses.

3. The decorative sheet for absorbent products according to claim 2, characterized in that: In a portion where the decorative layer and the adhesive layer overlap, a thickness at an end portion in a predetermined direction is smaller than a thickness at a portion adjacent to the end portion and located on the inner side in the predetermined direction.

4. The decorative sheet for absorbent products according to claim 2 or 3, characterized in that: A central portion in a predetermined direction of a portion where the decorative layer and the adhesive layer overlap is recessed.

5. The decorative sheet for absorbent products according to any one of claims 1 to 3, characterized in that: The adhesive layer has an extension portion extending toward one side of a predetermined direction relative to the decorative layer. The maximum thickness of the extended portion is smaller than the maximum thickness of a portion of the adhesive layer overlapping the decorative layer.

6. The decorative sheet for absorbent products according to any one of claims 1 to 3, characterized in that: The adhesive layer has an extension portion extending toward one side of a predetermined direction relative to the decorative layer. The length of the protruding portion in the predetermined direction is shorter than the length of a portion of the adhesive layer that overlaps with the decorative layer in the predetermined direction.

7. The decorative sheet for absorbent products according to any one of claims 1 to 3, characterized in that: The maximum thickness of the adhesive layer is greater than the maximum thickness of the decorative layer.

8. The decorative sheet for absorbent products according to any one of claims 1 to 3, characterized in that: The decorative layer is a layer formed of any one of a metal foil, a holographic foil, and a pigment foil.

9. The decorative sheet for absorbent products according to any one of claims 1 to 3, characterized in that: The absorbent article has a compressed portion compressed from the skin side of the surface sheet. The minimum width of the decoration layer is smaller than the minimum width of the compressed portion.

10. The decorative sheet for absorbent products according to any one of claims 1 to 3, characterized in that: The absorbent article has a compressed portion compressed from the skin side of the surface sheet. The maximum thickness of a portion where the decorative layer overlaps the adhesive layer is smaller than the minimum depth of the compressed portion.

11. The decorative sheet for absorbent products according to any one of claims 1 to 3, characterized in that: The decorative sheet for absorbent products has a printing layer provided on the surface of the sheet. The adhesive layer and the decoration layer are provided on the partial printing layer.

12. The decorative sheet for absorbent products according to any one of claims 1 to 3, characterized in that: The decorative sheet for absorbent products is used in the independent packaging of the absorbent article or the packaging of the absorbent article. The absorbent article comprises an absorbent core and a core wrap sheet covering the surface of the absorbent core. The decorative sheet has longitudinal and lateral directions orthogonal to each other. The elongation amount of the decorative sheet when the adhesive layer is broken when the decorative sheet is elongated in the direction having a higher elongation strength between the longitudinal direction and the transverse direction is defined as a first elongation amount, and the elongation amount of the core wrap sheet when the core wrap sheet is broken when the core wrap sheet is stretched in the width direction of the absorbent article is defined as a second elongation amount, At this time, the first elongation is greater than the second elongation.

13. The decorative sheet for absorbent products according to any one of claims 1 to 3, characterized in that: The decorative sheet has a longitudinal direction and a lateral direction which are orthogonal to each other, and has a first adhesive layer and a second adhesive layer. When the decorative sheet is stretched in the direction having a higher elongation strength between the longitudinal direction and the transverse direction, the elongation amount of the decorative sheet when the first adhesive layer is broken is different from the elongation amount of the decorative sheet when the second adhesive layer is broken.

14. The decorative sheet for absorbent products according to any one of claims 1 to 3, characterized in that: The decorative sheet for absorbent products is used in the independent packaging of the absorbent article or the packaging of the absorbent article. A welded portion is provided for accommodating and sealing the absorbent article inside. The welded portion can also be visually recognized when the decorative layer is viewed from above.

15. The decorative sheet for absorbent products according to any one of claims 1 to 3, characterized in that: The absorbent article has an absorbent core comprising a superabsorbent polymer, The minimum width of the decorative layer is smaller than the average particle size of the superabsorbent polymer.

16. The decorative sheet for absorbent products according to any one of claims 1 to 3, characterized in that: The decorative sheet for absorbent products is used for the packaging body of the absorbent article and has a coding identification part. The code mark portion is formed by a printed layer that does not overlap with the adhesive layer and the decorative layer.

17. The decorative sheet for absorbent products according to any one of claims 1 to 3, characterized in that: The decorative sheet for absorbent products is used for the packaging body of the absorbent article and has an article identification portion indicating the absorbent article. The article identification portion is formed by the adhesive layer and the decoration layer.

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