Decorative sheet for absorbent product

Abstract

The invention provides a decorative sheet for an absorbent product. The purpose of the present invention is to suppress deterioration in the appearance quality of a decorative sheet used in an individual packaging body for an absorbent article or a packaging body for an absorbent article. A decorative sheet (50) for an absorbent product 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), has a maximum thickness of 10 [mu] m or less, and protrudes from the surface of the sheet (51) in the thickness direction of the sheet (51). The amount of elongation (first elongation) of the decorative sheet (50) when the adhesive layer (52) is broken when the decorative sheet (50) is elongated in a direction having a high elongation strength in the longitudinal direction and the transverse direction is greater than the amount of elongation (second elongation) of the absorbent body (10) when the absorbent body (10) is broken when the absorbent body (10) is elongated in the width direction of the absorbent article (1).

Description

Technical Field

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

[0002] In Patent Document 1, a method for manufacturing a decorated sheet is disclosed in which an identification layer (letters, graphics, etc.) made of a foil having a metal component is formed on a material sheet. Specifically, it is the following manufacturing method: 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 Patent Application Laid-Open No. 2022-12041 Summary of the Invention

[0006] Problems to be Solved by the Invention

[0007] In the decorated sheet of Patent Document 1, an identification layer is formed by pressing a foil. In this case, since the identification layer and the material sheet are integrated by pressing, an external force applied to the material sheet directly acts on the identification layer, and cracks are likely to occur in the identification layer. When the appearance is deteriorated due to such damage to the decoration of the identification layer, the user may be concerned about whether the quality of the absorbent article stored is also poor like the decoration.

[0008] The present invention has been completed in view of the above problems, and an object thereof is to suppress a reduction in the appearance quality of a decorative sheet used for an individual package of an absorbent article or a package of an absorbent article.

[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 an individual package of an absorbent article or a package of an absorbent article and is decorated,

[0012] the decorative sheet for absorbent products has:

[0013] a sheet having a longitudinal direction and a lateral direction orthogonal to each other;

[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 position visually recognizable by the user and protrudes from the surface of the sheet in the thickness direction of the sheet.

[0017] The absorbent article includes an absorber.

[0018] The elongation amount of the decorative sheet when the adhesive layer breaks when the decorative sheet is elongated in the direction in which the elongation strength in the longitudinal direction and the transverse direction of the decorative sheet is higher is defined as the first elongation amount.

[0019] And the elongation amount of the absorber when the absorber breaks when the absorber is elongated in the width direction of the absorbent article is defined as the second elongation amount.

[0020] At this time, the first elongation amount is larger than the second elongation amount.

[0021] Regarding other features of the present invention, they will be clarified through the descriptions in this specification and the drawings.

[0022] Effects of the Invention

[0023] According to the present invention, it is possible to suppress a reduction in the appearance quality of the decorative sheet used for the individual package of the absorbent article or the package of the absorbent article. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a top view obtained by observing the sanitary napkin 1 in the unfolded state from the skin side.

[0025] Figure 2 It is a schematic cross-sectional view of the sanitary napkin 1.

[0026] 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.

[0027] 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.

[0028] Figure 5 It is a top view of the individual package 30 of the sanitary napkin.

[0029] 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.

[0030] Figure 7 It is a front view of the package 40.

[0031] Figure 8 It is a rear view of the package 40.

[0032] Figure 9 This is a diagram for explaining the decorative sheet 50.

[0033] Figure 10A and Figure 10B This is a diagram for explaining the decorative sheet 50.

[0034] Figure 11A and Figure 11B This is a diagram showing a modified example of the package 40.

[0035] Figure 12A and Figure 12B This is an explanatory diagram regarding the opening of the individual package 30.

[0036] Figure 13 This is a diagram for explaining the manufacturing method of the decorative sheet 50.

[0037] Explanation of Reference Numerals

[0038] 1. Sanitary napkin (absorbent article); 2. Top sheet; 3. Middle sheet; 4. Back sheet; 5. Wing; 6. Side sheet; 8. Adhesive portion; 9. Adhesive portion; 10. Absorbent body; 11. Absorbent core; 12. Core wrapper sheet; 20. Compression portion; 30. Individual package of sanitary napkin; 31. Wrapping sheet; 32. Fixing band; 33. Release sheet; 34. Release sheet; 35. Joint portion; 36. Welded portion; 40. Package of sanitary napkin; 41. Storage body; 42. Main body portion; 43. Sealing member; 50. Decorative sheet; 51. Sheet; 52. Adhesive layer; 52E. Protruding portion; 53. Decorative layer; 54. Three-dimensional decorative portion; 60. Printing layer; 61. Coding identification portion; 62. Article identification portion; 63. Information identification group; 64. Sanitary napkin group identification portion; 65. Information identification portion; 70. Manufacturing apparatus; 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 Description of the Invention

[0039] According to the description in this specification and the drawings, at least the following matters are clarified.

[0040] Mode 1 is a decorative sheet for an absorbent product. Among them, the decorative sheet for the absorbent product is used for the individual package of the absorbent article or the package of the absorbent article and is decorated. The decorative sheet for the absorbent product has: a sheet having a longitudinal direction and a lateral direction orthogonal to each other; 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. The absorbent article has an absorbent body. The elongation amount of the decorative sheet when the adhesive layer breaks when the decorative sheet is elongated in the direction with a higher elongation strength in the longitudinal direction and the lateral direction is set as the first elongation amount, and the elongation amount of the absorbent body when the absorbent body breaks when the absorbent body is elongated in the width direction of the absorbent article is set as the second elongation amount. At this time, the first elongation amount is larger than the second elongation amount.

[0041] According to Mode 1, even for a decorative layer with a relatively thin maximum thickness, it 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 also deforms three-dimensionally and fits. In addition, by making the adhesive layer less likely to break than the absorbent body which is manufactured not to break during wearing the absorbent article, the reduction of the appearance quality of the decorative sheet can be suppressed. Thus, it is easy for the user to also have the impression that the absorbent article stored in the decorative sheet has high-quality performance.

[0042] (Mode 2) Based on the decorative sheet for the absorbent product described in Mode 1, when the elongation amount of the absorbent body when the absorbent body breaks when the absorbent body is elongated in the length direction of the absorbent article is set as the third elongation amount, the first elongation amount is larger than the third elongation amount.

[0043] According to Mode 2, by making the adhesive layer less likely to break than the absorbent body which is manufactured not to break during wearing the absorbent article, the reduction of the appearance quality of the decorative sheet can be suppressed.

[0044] (Mode 3) Based on the decorative sheet for the absorbent product described in Mode 1 or 2, when the elongation amount of the decorative sheet when the decorative layer breaks when the decorative sheet is elongated in the direction with a higher elongation strength is set as the fourth elongation amount, the fourth elongation amount is larger than the second elongation amount.

[0045] According to Mode 3, by making the decorative layer less likely to break than the absorbent body which is manufactured not to break during wearing the absorbent article, the reduction of the appearance quality of the decorative sheet can be suppressed. The visual recognition of the decorative layer provided on the adhesive layer is relatively high, so the reduction of the appearance quality of the decorative sheet can be further suppressed.

[0046] (Mode 4) Based on the decorative sheet for the absorbent product described in any one of Modes 1 to 3, the storage body included in the package of the absorbent article has a fracture predetermined area that fractures when opened, and the maximum elongation strength in the case of fracturing the fracture predetermined area is smaller than the elongation strength when the adhesive layer fractures in the case of elongating the decorative sheet in the direction with higher elongation strength.

[0047] According to Mode 4, even if a force equivalent to the pulling force when fracturing the fracture predetermined area acts on the decorative sheet, the adhesive layer is not easily fractured, and a decrease in the appearance quality of the decorative sheet can be suppressed.

[0048] (Mode 5) Based on the decorative sheet for the absorbent product described in Mode 4, the maximum elongation strength in the case of fracturing the fracture predetermined area is smaller than the elongation strength when the decorative layer fractures in the case of elongating the decorative sheet in the direction with higher elongation strength.

[0049] According to Mode 5, even if a force equivalent to the pulling force when fracturing the fracture predetermined area acts on the decorative sheet, the decorative layer is not easily fractured, and a decrease in the appearance quality of the decorative sheet can be suppressed.

[0050] (Mode 6) Based on the decorative sheet for the absorbent product described in Mode 5, the decorative sheet for the absorbent product is used for the storage body, and the package of the absorbent article includes a sealing member that covers the fracture predetermined area, and the fracture predetermined area is fractured by pulling the sealing member.

[0051] According to Mode 6, even when the pulling force of the sealing member acts on the decorative sheet when the package is opened, fracture of the decorative layer and the adhesive layer can be suppressed. Thereby, a decrease in the appearance quality of the package can be suppressed.

[0052] (Mode 7) Based on the decorative sheet for the absorbent product described in any one of Modes 1 to 6, the individual package of the absorbent article has a packaging sheet and a fixing band that straddles the opening end of the packaging sheet, and the maximum elongation strength when peeling the fixing band from the packaging sheet is smaller than the elongation strength when the decorative layer fractures in the case of elongating the decorative sheet in the direction with higher elongation strength.

[0053] According to Mode 7, even if a force equivalent to the pulling force when peeling the fixing band from the packaging sheet acts on the decorative sheet, the decorative layer is not easily fractured, and a decrease in the appearance quality of the decorative sheet can be suppressed.

[0054] (Mode 8) Based on the decorative sheet for an absorbent product described in any one of Modes 1 to 7, the individual package of the absorbent article has a packaging sheet. At both ends of the packaging sheet along the direction of the opening end, the folded packaging sheets are joined to each other through a welded portion. The maximum elongation strength when the welded portion is opened is smaller than the elongation strength when the decorative layer breaks when the decorative sheet is elongated in the direction with higher elongation strength.

[0055] According to Mode 8, even if a force equivalent to the pulling force when opening the welded portion of the packaging sheet acts on the decorative sheet, the decorative layer is not easily broken, and a reduction in the appearance quality of the decorative sheet can be suppressed.

[0056] (Mode 9) Based on the decorative sheet for an absorbent product described in any one of Modes 1 to 8, the decorative sheet for the absorbent product is used for a storage body included in the package of the absorbent article. The storage body has a predetermined breaking area that breaks when opened. When the storage body is viewed from above, the adhesive layer and the decorative layer do not overlap with the predetermined breaking area.

[0057] According to Mode 9, in the predetermined breaking area, the adhesive layer and the decorative layer do not break together with the decorative sheet. Therefore, the peeling off of the adhesive layer and the decorative layer can be prevented, and a reduction in the appearance quality of the decorative sheet can be suppressed. In addition, the situation where the adhesive layer elongates in the predetermined breaking area and makes it difficult for the predetermined breaking area to break can be prevented.

[0058] (Mode 10) Based on the decorative sheet for an absorbent product described in any one of Modes 1 to 9, the decorative sheet for the absorbent product is used for a storage body included in the package of the absorbent article. The adhesive layer and the decorative layer are provided on a certain surface among the multiple surfaces of the storage body and are not provided on the surface opposite to the certain surface.

[0059] According to Mode 10, the user can be given the impression that the absorbent article also deforms three-dimensionally and fits through the adhesive layer and the decorative layer on a certain surface. By not unnecessarily providing the adhesive layer and the decorative layer on the surface opposite to the storage body, the risk of peeling off of the adhesive layer and the decorative layer can be reduced, and a reduction in the appearance quality of the decorative sheet can be suppressed.

[0060] (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 is used for a storage body included in the package of the absorbent article. The storage body has a predetermined breaking area that breaks when opened. The adhesive layer and the decorative layer are provided on the surface of the storage body where the predetermined breaking area is not provided.

[0061] According to Method 11, when the storage body is unsealed, it is not easy for the user to touch the adhesive layer and the decorative layer. In addition, the force pulling the storage body is not likely to act on the adhesive layer and the decorative layer. Thereby, breakage of the adhesive layer and the decorative layer can be suppressed, and the appearance quality of the storage body (decorative sheet) can be maintained even after unsealing.

[0062] (Method 12) Based on the decorative sheet for an absorbent product described in any one of Methods 1 to 11, the decorative sheet for an absorbent product has an information identification portion indicating information related to the absorbent article, and the information identification portion is formed by a printing layer that does not overlap with the adhesive layer and the decorative layer.

[0063] According to Method 12, the probability of peeling of the printing layer is lower than that of the adhesive layer and the decorative layer, and the information identification portion can be more reliably shown to the user.

[0064] (Method 13) Based on the decorative sheet for an absorbent product described in any one of Methods 1 to 12, the decorative layer is a layer formed of any one of a metal foil, a holographic foil, and a pigment foil.

[0065] According to Method 13, 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 decorative layer with dulling, and can give the user the impression that it is a product with a stable sense of security.

[0066] === Embodiment ===

[0067] Hereinafter, as an absorbent article, a sanitary napkin is taken as an example to illustrate an embodiment of a decorative sheet for an absorbent product used in any one of an absorbent article, an independent package of an absorbent article, and a package of an absorbent article. The absorbent article is not limited to a sanitary napkin, and also includes disposable diapers of the panty type or belt type, sanitary pads, short-pant sanitary napkins, light incontinence pads, urine absorbent pads, breast pads, axillary sweat pads, disposable diapers for pets, and other absorbent articles.

[0068] << Basic Structure of Sanitary Napkin 1 >>

[0069] Figure 1 It is a top view obtained by observing Sanitary Napkin 1 in an unfolded state from the skin side. Figure 2It is a schematic cross-sectional view of the sanitary napkin 1. The sanitary napkin 1 in the unfolded state 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 lower abdomen of the wearer is called the "front side", and the side that abuts against the buttocks of the wearer is called the "rear side". In addition, in the thickness direction of the sanitary napkin 1, the side that abuts against the skin of the wearer is called the "skin side", and the opposite side is called the "non-skin side".

[0070] 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 to each other 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 toward 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.

[0071] In addition, the topsheet 2 that comes into contact with the skin of the wearer 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, irritation to the skin of the wearer can be reduced. In this case, as shown in the drawings described later, by providing a pattern indicating cotton on the sanitary napkin 1, the independent 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.

[0072] 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. as 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. In addition, the sanitary napkin 1 has a compression portion 20 formed by compressing the absorber 10 along the thickness direction from the skin side surface of the topsheet 2.

[0073] 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 the wing portion 1w.

[0074] <<Independent Package 30 of Sanitary Napkin>>

[0075] Figure 3 The top view obtained by observing the independent package 30 of the sanitary napkin 1 in the unfolded state from the non-skin side. Figure 4 The top view obtained by observing the independent package 30 of the sanitary napkin 1 in the middle of unfolding from the skin side. Figure 5 The top view of the independent package 30 of the sanitary napkin 1.

[0076] 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 the packaging sheet 31, and includes the sanitary napkin 1, the packaging sheet 31, the fixing belt 32, and the release sheets 33 and 34. The packaging sheet 31 is a rectangular sheet member, and examples thereof include a resin film, a non-woven fabric, paper, and a sheet formed 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, which is the short side direction of the packaging sheet 31, corresponds to the width direction of the sanitary napkin 1. The fixing belt 32 is provided at the end of the packaging sheet 31 in the length direction.

[0077] As Figure 3 shown, on the non-skin side of the sanitary napkin 1 (i.e., the non-skin side of the bottom sheet 4), a plurality of adhesive portions 8 and 9 formed by coating an adhesive or the like are provided. In the main body portion of the sanitary napkin 1, a plurality of rectangular adhesive portions 8 extending along the length direction are arranged in the width direction. The adhesive portion 8 of the main body portion is used to fix the main body portion of the sanitary napkin 1 to the inner side of the underwear of the wearer. In addition, in the wing portion 1w, a plurality of rectangular adhesive portions 9 extending along the length direction are also arranged in the width direction. When the sanitary napkin 1 is worn, the wing portion 1w is bent and fixed to the outer side of the underwear by the adhesive portion 9. In addition, the shape, number, and arrangement of the adhesive portions 8 and 9 are not limited to Figure 3 the case exemplified.

[0078] In the independent package 30, the non-skin side of the sanitary napkin 1 is fixed to the packaging sheet 31 via the release sheet 33. The release sheet 33 covers the adhesive portion 8 of the main body portion of the sanitary napkin 1 and enables the sanitary napkin 1 to be easily peeled off when the independent package 30 is opened. In addition, as Figure 4 shown, the wing portion 1w is folded inward in the width direction on the skin side of the sanitary napkin 1. The adhesive portion 9 of the wing portion 1w is covered by the release sheet 34. In addition, the sanitary napkin 1 may be directly fixed to the packaging sheet 31 in a peelable manner without being fixed to the packaging sheet 31 via the release sheet 33.

[0079] The packaging sheet 31 and the sanitary napkin 1 are folded at two folding portions F1 and F2 along the width direction starting from Figure 4 the state. The two end portions in the width direction of the packaging sheet 31 folded together with the sanitary napkin 1 are joined, 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 opening 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.

[0080] 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 portions 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 while enclosing the pre-folded sanitary napkin 1.

[0081] <<Package 40 of Sanitary Napkin>>

[0082] 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 individual packages of absorbent articles, and may directly store one or more absorbent articles that are not individually packaged, such as disposable diapers.

[0083] Figure 6A The exemplified storage body 41 has an up-down direction, a left-right direction, and a front-back direction, and has a rectangular parallelepiped-shaped main body portion 42 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 cut line 44 (such as 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 cut line 44 to open, and an opening portion 45 serving as an outlet for the sanitary napkin 1 is formed.

[0084] 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 rectangular parallelepiped-shaped storage body without a sealing member 43, a self-standing bag type, a flat bag, or the like.

[0085] <<Decorative sheet 50 for absorbent products>>

[0086] Figure 7 is the front view of the package 40. Figure 8 is the rear view of the package 40. Figure 9 , Figure 10A and Figure 10B are diagrams for explaining the decorative sheet 50.

[0087] In the storage body 41 (specifically, the main body portion 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. As the decorative layer 53, metal foil, holographic foil, pigment foil, etc. can be exemplified (details will be described later).

[0088] The decorative layer 53 is provided at a position visually recognizable by the user and protrudes from the surface of the sheet 51 in the thickness direction of the sheet 51. That is, the decorative layer 53 protrudes with respect to the surface of the surrounding sheet 51 by the adhesive layer 52 formed so as to bulge on the surface of the sheet 51. Therefore, the decoration exhibited 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 the cross-sectional shape of the three-dimensional decoration portion 54, Figure 9 , Figure 10A and Figure 10B shown shapes can be exemplified. 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.

[0089] 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 exhibited by the three-dimensional decoration portion 54, or the outline of a flower and the pattern d2 of petals ( Figure 7 ) are exhibited, or the pattern d3 of the sanitary napkin 1 is exhibited ( Figure 7 ).

[0090] Thus, even when the sheet 51 is decorated with a relatively thin decorative layer 53 (such as a metal foil, a holographic foil, a pigment foil, etc.) 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 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 an impression of a three-dimensional product. Therefore, the user is also likely to have an 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.

[0091] The type of decoration exhibited by the three-dimensional decoration portion 54 is not particularly limited, and examples thereof include characters, numbers, marks (such as musical note marks, indications, etc.), figures (such as circles, polygons, hearts, stars, etc.), patterns (such as drawings representing the shapes of articles, animals, plants, people, etc.), geometric patterns, colors (portions having a predetermined color difference from 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.

[0092] 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. Ultraviolet rays are irradiated onto the adhesive layer 52 that is an ultraviolet curable adhesive, and the adhesiveness of the locally cured adhesive layer 52 is used to bond the decorative layer 53 to the adhesive layer 52. However, it is not limited thereto. For example, other photo-curable adhesives or the like may also be used. It is preferable to adjust the viscosity 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.

[0093] The thickness of the decorative layer 53 is the length in the direction orthogonal to the surface of the decorative layer 53 (for example 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 this portion is cut at any number of locations to form a plurality of samples. Then, using an optical microscope (such as 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 thickness 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.

[0094] Moreover, the elongation strength of the decorative sheet 50 is higher than the elongation strength in the width direction of the absorber 10 included in the sanitary napkin 1. The elongation strength of the decorative sheet 50 is set to the strength in the direction with the higher elongation strength among the longitudinal direction and the lateral direction orthogonal to each other included in the sheet 51. Hereinafter, the direction with the higher elongation strength among the longitudinal direction and the lateral direction of the sheet 51 is also referred to as the "high-strength direction".

[0095] When the decorative sheet 50 is used for the storage body 41 of the encapsulation body 40 and is sealed up and down as Figure 6A described, the up-down direction and the left-right direction (or the up-down direction and the front-back direction) of the storage body 41 correspond to the longitudinal direction and the lateral direction of the sheet 51. In addition, when the decorative sheet 50 is used for the packaging sheet 31 of the individual package 30, Figure 3 the length direction and the width direction shown correspond to the longitudinal direction and the lateral direction of the decorative sheet 50.

[0096] The elongation amount of the decorative sheet 50 when the adhesive layer 52 of the three-dimensional decorative portion 54 breaks when the decorative sheet 50 is elongated in the high-strength direction of the sheet 51 is set as the "first elongation amount" (unit example: mm). In addition, the elongation amount of the absorber 10 when the absorber 10 breaks when the absorber 10 is elongated in the width direction of the sanitary napkin 1 is set as the "second elongation amount" (unit example: mm). At this time, the first elongation amount is larger than the second elongation amount, and the elongation strength of the decorative sheet 50 is higher than the elongation strength in the width direction of the absorber 10.

[0097] The time when the adhesive layer 52 breaks means either the earlier time when cracks, ruptures, etc. start to occur in the adhesive layer 52 or the time when the adhesive layer 52 starts to peel off from the sheet 51. In addition, the absorber 10 of the present embodiment includes an absorbent core 11 and a core wrapper sheet 12 covering the absorbent core 11. In this case, the time when either the absorbent core 11 or the core wrapper sheet 12 breaks first is set as the time when the absorber 10 breaks. However, in the case where the absorbent core 11 is a structure formed by laminating liquid-absorbent fibers such as pulp fibers, the absorbent core 11 does not elongate, and thus preferably, the time when the core wrapper sheet 11 breaks (the time when cracks, ruptures, etc. start to occur) is set as the time when the absorber 10 breaks. In addition, in the case where the absorber 10 does not include the core wrapper sheet 12, the time when the absorbent core (for example, a SAP sheet, an airlaid sheet, etc.) breaks (the time when cracks, ruptures, etc. start to occur) is set as the time when the absorber 10 breaks. The same applies to the third elongation amount (described later) in the case of elongating the absorber 10 in the length direction of the sanitary napkin 1.

[0098] According to the above, even when the decorative sheet 50 is stretched to the length at which the absorber 10 starts to break (the second elongation amount), the adhesive layer 52 of the three-dimensional decorative portion 54 does not break. Generally, the absorber 10, which is a material constituting the sanitary napkin 1, is formed with a strength that does not break during the wearing of the sanitary napkin 1. For the adhesive layer 52, the elongation strength is higher than that of the absorber 10 and it is not easily broken. Therefore, even when the decorative sheet 50 (here, the housing 41 of the encapsulation body 40) is stretched at various times such as during manufacturing, circulation, and use by the user, the adhesive layer 52 is not easily broken. In addition, it is possible to suppress the case where the three-dimensional decorative portion 54 (adhesive layer 52) detaches from the sheet 51 due to the breakage of the adhesive layer 52. Thus, compared with the case where the first elongation amount is less than or equal to the second elongation amount, the decorative sheet 50 according to the present embodiment can suppress a reduction in the appearance quality.

[0099] In addition, different from the decorative sheet 50 of the present embodiment, for example, a flat decoration can be formed on the sheet by crimping a foil material such as a metal foil to the sheet. In this case, since the foil material and the sheet are integrated by crimping, the pulling force applied to the sheet easily acts directly on the foil material. In contrast, in the decorative sheet 50 of the present embodiment, a decorative layer 53 (foil material) is provided on the adhesive layer 52, and the pulling force of the sheet 51 does not easily act directly on the decorative layer 53. In addition, the adhesive layer 52 is formed of a raw material having adhesiveness and has elasticity. Therefore, the elasticity of the adhesive layer 52 is used to reduce the pulling force applied to the decorative layer 53. Thus, compared with the case of crimping a foil material to the sheet, the decorative layer 53 (foil material) of the decorative sheet 50 of the present embodiment is not easily broken.

[0100] Actually, a sample obtained by crimping a foil material to a sheet and a sample of the decorative sheet 50 of the present embodiment were prepared, and a test of stretching each sample was performed using a tensile testing machine (the test method is the same as the method described later for measuring the first elongation amount). As a result, the following results were obtained: The sample of the decorative sheet 50 of the present embodiment has a longer elongation amount at which breakage starts to occur in the foil material compared with the sample obtained by crimping a foil material to the sheet, and the foil material (decorative layer 53) is not easily broken.

[0101] That is, the three-dimensional decorative portion 54 formed by overlapping the decorative layer 53 on the adhesive layer 52 can not only form a three-dimensional decoration but also suppress the breakage of the decorative layer 53. By suppressing the breakage of the decorative layer 53 provided on the adhesive layer 52 and having a higher visual recognition property than the adhesive layer 52, the appearance quality of the decorative sheet 50 can be further maintained.

[0102] Therefore, in a store where the packaging body 40 is displayed, a bathroom where the packaging body 40 is stored, etc., users who visually recognize the three-dimensional decoration part 54 that maintains the appearance quality are likely to receive the impression of a high-quality product. Therefore, users are also likely to have the impression that the sanitary napkin 1 stored in the packaging body 40 also has high-quality performance (such as leak-proof, comfortable wearing feeling, high durability, etc.). Thus, users can use the sanitary napkin 1 with confidence.

[0103] Alternatively, instead of using the decorative sheet 50 for the packaging body 40, it can be used for the individual package 30 of the sanitary napkin 1. For example, 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, Figure 4 the pattern d5 on the release sheet 34 shown are preferably set as the three-dimensional decoration part 54. In this way, when the user takes out the individual package 30 from the packaging body 40 and opens the individual package 30, the user can visually recognize the three-dimensional decoration part 54 that maintains the appearance quality.

[0104] Alternatively, the decorative sheet 50 can be used only for one of the packaging body 40 and the individual package 30, or the individual package 30 formed by the decorative sheet 50 can be stored in the packaging body 40 formed by the decorative sheet 50.

[0105] In addition, the decorative sheet 50 can have only one three-dimensional decoration part 54, or can have a plurality of three-dimensional decoration parts 54. The elongation at break (the first elongation) of each adhesive layer 52 of the plurality of three-dimensional decoration parts 54 can be the same or different. For example, the decorative sheet 50 of the formed Figure 7 packaging body 40 has an adhesive layer 52 forming a pattern d1 in a curve and an adhesive layer 52 forming a pattern d3 of the sanitary napkin, and the widths of the two adhesive layers 52 are different. In such a case, the elongation at break (the first elongation) is likely to be different. In addition, by making the amount and the number of ejection times of the adhesive layer 52 ejected onto the facing sheet 51 different to make the thickness of the adhesive layer 52 different, or by making the planar shape (such as the presence or absence of a curved part and a straight part) of the adhesive layer 52 different, the elongation at break (the first elongation) is likely to be different.

[0106] When the elongation at break of each of the plurality of adhesive layers 52 of the decorative sheet 50 is different, it is sufficient that the elongation at break (first elongation) of at least one adhesive layer 52 is greater than the elongation at break (second elongation) of the absorber 10. Preferably, the elongation at break (first elongation) of each of the plurality of adhesive layers 52 is greater than the second elongation. More preferably, the elongation at break (first elongation) of each of all the adhesive layers 52 of the decorative sheet 50 is greater than the second elongation. Thus, breakage of more adhesive layers 52 can be suppressed, and thus a decrease in the appearance quality of the decorative sheet 50 can be suppressed.

[0107] In addition, the elongation of the absorber 10 at the time of breakage of the absorber 10 when the absorber 10 is elongated in the length direction of the sanitary napkin 1 is defined as the third elongation (unit example: mm). At this time, preferably, the first elongation at which the adhesive layer 52 breaks when the decorative sheet 50 is elongated in the high-strength direction is greater than the third elongation.

[0108] The sanitary napkin 1 is mostly manufactured while its constituent materials are being conveyed in a state continuous along the length direction of the sanitary napkin 1. Therefore, it is mostly configured such that the elongation strength in the length direction of the absorber 10 is higher than the elongation strength in the width direction. Thus, as described above, the first elongation is greater than the third elongation, and the elongation strength of the adhesive layer 52 is higher than the elongation strength in the length direction of the absorber 10, so that the adhesive layer 52 is less likely to break. In addition, the situation where the adhesive layer 52 peels off from the sheet 51 due to breakage can also be suppressed. Thereby, a decrease in the appearance quality of the decorative sheet 50 can be suppressed, and the impression that the sanitary napkin 1 stored is also of high-quality performance can be maintained.

[0109] In addition, the elongation of the decorative sheet 50 at the time of breakage of the decorative layer 53 (such as cracks, fractures, etc., damage, and the start of peeling from the adhesive layer 52) when the decorative sheet 50 is elongated in the high-strength direction is defined as the fourth elongation (unit example: mm). Preferably, the fourth elongation is greater than the second elongation at which the absorber 10 breaks when the absorber 10 is elongated in the width direction.

[0110] Thus, even when the decorative sheet 50 is elongated to the length (second elongation) at which the absorber 10 starts to break, the decorative layer 53 does not break. By suppressing breakage of the decorative layer 53, whose visual recognition is higher than that of the adhesive layer 52, the appearance quality of the decorative sheet 50 can be further maintained. Thereby, the impression that the stored sanitary napkin 1 is also of high-quality performance can be given to the user. In addition, since the decorative layer 53 is not easily broken, the situation where the impression given to the user by the decorative layer 53 is reduced can be suppressed. For example, if the decorative layer 53 has a metallic luster, the situation where the impression of a high-class product is reduced can be suppressed.

[0111] The method for comparing the elongation at break can be carried out by using a tensile testing machine (example: Instron model 5965 or an equivalent instrument) and by a known method.

[0112] First, determine the direction with higher elongation strength, i.e., the high-strength direction, among the longitudinal and transverse directions of the decorative sheet 50 (sheet 51). For this purpose, cut the decorative sheet 50 into a predetermined size to form a sample. Prepare 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. The sample is set as a rectangular shape with the elongation measurement direction as the length direction (for example, the length in the measurement direction is 100 mm × the width is 25 mm). Then, hold both ends of the sample with the chucks of the 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 (high-strength direction)".

[0113] Next, cut the decorative sheet 50 into a predetermined size to form a sample including an arbitrary three-dimensional decorative portion 54. The size of the sample is set as a rectangular shape with the direction with higher elongation strength among the longitudinal and transverse directions of the decorative sheet 50 as the length direction (measurement direction) (for example, the length in the measurement direction is 100 mm × the width is 25 mm). In addition, separate each material from the sanitary napkin 1 using cold spraying or the like, and take out the absorber 10 or the material to be measured in the absorber 10 (the absorbent core 11 or the core wrapper 12). Also cut the absorber 10 or the object material in the absorber 10 into a predetermined size (a rectangular shape with the length direction in the width direction or the length direction of the sanitary napkin 1 as the measurement direction, the length is 100 mm × the width is 25 mm) to form a sample. In addition, the above sample size is an example. For example, when the length in the width direction of the absorber 10 is less than 100 mm, it is preferable to perform the measurement using samples made by reducing both the sample of the decorative sheet 50 and the sample of the absorber 10 in the same way (that is, samples with the length in the measurement direction set to less than 100 mm). Then, hold both ends of each sample with the chucks of the 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 of the sample when fracture starts to occur in the adhesive layer 52 or the decorative layer 53 of the three-dimensional decorative portion 54 (the first elongation or the fourth elongation), and the elongation of the sample when the absorber 10 is elongated in the width direction or the length direction and fracture starts to occur in the absorber 10 (the second elongation or the third elongation), and compare them.

[0114] 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 easy to stand out. 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 an impression that the sanitary napkin 1 is also three-dimensionally deformed. In addition, through the three-dimensional decorative portion 54 with a metallic luster, the user is also likely to receive an impression that it is a high-class product. Therefore, the user is likely to have an 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 an impression that it is 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 metal are mixed in the stored sanitary napkin 1.

[0115] Examples of the metal foil include a metal foil obtained by hammering 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 member. Examples of the metal contained in the metal foil include gold, silver, copper, tin, brass, aluminum, and the like.

[0116] The holographic foil is a thin and flat sheet having a property of reflecting incident light as a color by using a prism effect. By providing a fine concavo-convex pattern on the surface, a specific pattern can be visually recognized by a person who sees the reflected light.

[0117] 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.

[0118] In addition, preferably, the elongation strength of the adhesive layer 52 is higher than that of the decorative layer 53, and the first elongation amount (the elongation amount at the break of the adhesive layer 52) is larger than the fourth elongation amount (the elongation amount at the break of the decorative layer 53). For this reason, the raw materials, thickness, etc. of the adhesive layer 52 can be adjusted. According to the above, the adhesive layer 52 is more likely to elongate than the decorative layer 53. The adhesive layer 52 is provided on the sheet 51 and is easily affected by the external force of the sheet 51. However, by being easily elongated as described above, it can easily follow the deformation of the sheet 51. Thereby, breakage of the adhesive layer 52 can be suppressed. In addition, the adhesive layer 52 is less likely to break than the decorative layer 53, so that breakage of the decorative layer 53 caused by breakage of the adhesive layer 52 can be prevented. In addition, if the three-dimensional decorative portion 54 comes off from the sheet 51 due to breakage of the adhesive layer 52, it is easier for the user to recognize a decrease in the quality of the decorative sheet 50 than in the case where only cracks occur in the adhesive layer 52 and the decorative layer 53. Therefore, it is preferable to increase the elongation strength of the adhesive layer 52 to suppress the detachment of the three-dimensional decorative portion 54.

[0119] Moreover, preferably, the elongation strength of the adhesive layer 52 is higher than the elongation strength in the width direction of at least one of the surface sheet 2 and the side sheet 6 included in the sanitary napkin 1. That is, preferably, the first elongation amount at which the adhesive layer 52 breaks when the decorative sheet 50 is elongated in the high-strength direction is larger than the elongation amount at which the surface sheet 2 or the side sheet 6 breaks when the surface sheet 2 or the side sheet 6 is elongated in the width direction. The surface sheet 2 and the side sheet 6 exposed outside the sanitary napkin 1 are formed so as not to break easily. Therefore, in the above case, the adhesive layer 52 is less likely to break, and a decrease in the appearance quality of the decorative sheet 50 can be suppressed. However, it is not limited to the above case, and the elongation strength of the adhesive layer 52 may be lower than the elongation strength of the surface sheet 2 and the side sheet 6. The elongation amount at the break of the surface sheet 2 and the side sheet 6 can be measured by the same method as the measurement method of the first elongation amount.

[0120] Figure 11A and Figure 11B FIG. is a diagram showing a modified example of the package body 40. The storage body 41 included in the package body 40 has a fracture predetermined region Rc that fractures when opened. For example, in Figure 6A the case of the storage body 41 shown, the portion of the main body portion 42 covered by the sealing member 43 where the cut line 44 is formed becomes the fracture predetermined region Rc. In the storage body 41 that does not have the sealing member 43 as in Figure 11A the cut line 44 such as a tear line is exposed. The portion where the cut line 44 is formed becomes the fracture predetermined region Rc. In Figure 11BIn the self-supporting bag type storage body 41, a pair of notches 47 are provided above the resealable seal 46 (resin zipper etc.) arranged in the left-right direction. The notches 47 are portions that are slightly cut inward in the left-right direction at both end portions of the storage body 41 in the left-right direction. In this case, the portion extending from one notch 47 to the other notch 47 in the left-right direction (at Figure 11B The portion hypothetically indicated by the dotted line in the figure becomes the predetermined breaking area Rc.

[0121] Furthermore, it is preferable that the maximum elongation strength when the planned breaking region Rc is broken is smaller than the elongation strength when the adhesive layer 52 of the three-dimensional decorative portion 54 is broken when the decorative sheet 50 is stretched in the high-strength direction.

[0122] The maximum elongation strength for the case where the predetermined breaking region Rc is broken refers to the maximum value of the pulling force acting on the storage body 41 when the storage body 41 is opened in the predetermined breaking region Rc. Therefore, according to the above content, even if the same pulling force as that when the storage body 41 is opened is applied to the decorative sheet 50 used in the package 40 or the individual package 30, the adhesive layer 52 is not easily broken. Thus, it is possible to suppress the reduction of the appearance quality of the decorative sheet 50, and it is possible to maintain the impression of high quality performance of the stored sanitary napkin 1.

[0123] Furthermore, it is preferable that the maximum elongation strength when the predetermined breaking region Rc is broken is smaller than the elongation strength when the decorative layer 53 of the three-dimensional decorative portion 54 is broken when the decorative sheet 50 is stretched in the high-strength direction. In this way, even if the decorative sheet 50 used in the package 40 or the individual package 30 is subjected to the same degree of pulling force as when the storage body 41 is opened, the decorative layer 53 is not easily broken. The decorative layer 53 with high visual recognition is not easily broken, so that the deterioration of the appearance quality of the decorative sheet 50 can be further suppressed, and the impression of high-quality performance can be maintained on the sanitary napkin 1.

[0124] Furthermore, it is preferred that the above-mentioned decorative sheet 50 is used in the storage body 41 of the package 40. Specifically, it is preferred that the above-mentioned decorative sheet 50 is used in the storage body 41 of the following package 40: Figure 6A The housing body 41 of the package body 40 is provided with a sealing member 43 covering the predetermined fracture area Rc, and as shown in FIG. Figure 6BAs shown, the fracture predetermined area Rc is fractured by pulling the sealing member 43. When opening the storage body 41, the user holds the storage body 41 (main body portion 42) with one hand and pulls the sealing member 43 with the other hand, and this pulling force acts on the decorative sheet 50. However, as described above, the maximum elongation strength in the case of fracturing the fracture predetermined area Rc is smaller than the elongation strength when the adhesive layer 52 and the decorative layer 53 are fractured. Therefore, the adhesive layer 52 and the decorative layer 53 are not easily fractured. Thus, even after the storage body 41 is opened, the appearance quality of the storage body 41 can be maintained.

[0125] Preferably, Figure 6A in the storage body 41 shown, it is preferable that the up-and-down direction, which is the direction of uncovering and pulling the sealing member 43, is the high-strength direction of the sheet 51. In this way, even if the maximum elongation strength in the case of fracturing the fracture predetermined area Rc acts on the storage body 41 (decorative sheet 50), the fracture of the adhesive layer 52 and the decorative layer 53 can be more reliably suppressed.

[0126] Regarding the "maximum elongation strength in the case of fracturing the fracture predetermined area Rc", it can be measured using a tensile testing machine.

[0127] (1) In Figure 6A the case of the package 40 of the shown specifications, the end portion (lower end portion) of the storage body 41 on the side opposite to the side provided with the sealing member 43 is opened with scissors or the like, and the independent package 30 is taken out. Then, one chuck of the tensile testing machine is used to grip the gripping portion 431 (gp) of the sealing member 43, and the other chuck is used to grip the portion of the storage body 41 below the sealing member 43. Specifically, a gripping portion is formed at the center in the left-right direction (gp) at a position 5 mm separated downward from the adhesive surface of the sealing member 43, and it is gripped with the chuck. Then, the distance between the pair of chucks (example: 10 mm) is separated at a constant speed (example: 200 mm / minute), and the load (elongation strength) applied during the period from the state where the fracture predetermined area Rc is not opened to being completely opened is obtained. The maximum value (N) among them is taken as the maximum elongation strength.

[0128] (2) In Figure 11A the case of the package 40 of the shown specifications, the portion provided with the cut line 44 (tear line) is retained and opened with scissors or the like, and the independent package 30 is taken out. As in Figure 11AWhen two cut lines 44 are provided on both the upper and lower sides in the vertical direction of the side surface 41s of the storage body 41, the storage body 41 is cut at the center in the vertical direction to form two samples. Then, the central portions (gp) in the left-right direction of one side and the other side of the storage body 41 in the direction (vertical direction) intersecting with the cut line 44 are respectively clamped by a pair of chucks of a tensile testing machine. In addition, the samples are clamped by the chucks in such a manner that the angle between the pair of chucks across the cut line 44 becomes 45 degrees (in such a manner that each chuck is inclined 22.5 degrees with respect to the cut line 44). After that, the pair of chucks are separated vertically to cut the cut line 44. The samples are arranged in such a manner that the chucks form a 45-degree angle at the starting opening part of the cut line 44. After that, the distance between the pair of chucks (example: 20 mm) is separated at a constant speed (example: 100 mm / minute) for measurement. The tensile strength of the cut line 44 is measured at the part where the strength change is stable. Specifically, the load (elongation strength) applied during the period from the 5th hole to the 10th hole position of the easy tear line where it breaks is obtained. The maximum value (N) among them is acquired and set as the maximum elongation strength.

[0129] (3) In the case of the package body 40 of the specification shown in Figure 11B , the end portion (lower end portion) on the side opposite to the notch portion 47 is opened with scissors or the like, and the independent package body 30 is taken out. The portions (gp) on both sides of the notch portion 47 are respectively clamped by a pair of chucks of a tensile testing machine. After that, the distance between the pair of chucks (example: 20 mm) is separated at a constant speed (example: 100 mm / minute) for measurement. The load (elongation strength) applied during the period from the state where the fracture predetermined area Rc is not opened to the complete opening is obtained. The maximum value (N) among them is acquired and set as the maximum elongation strength.

[0130] Regarding the measurement method of the elongation strength when the adhesive layer 52 or the decorative layer 53 breaks in the case of stretching the decorative sheet 50 in the high-strength direction, it can be measured by using the same measurement method as when obtaining the first elongation amount or the like. That is, the load applied to the sample of the decorative sheet 50 when the distance between the chucks of the tensile testing machine is elongated by the first elongation amount is set as the elongation strength (N) when the adhesive layer 52 breaks. In addition, the load applied to the sample of the decorative sheet 50 when the distance between the chucks of the tensile testing machine is elongated by the fourth elongation amount is set as the elongation strength (N) when the decorative layer 53 breaks.

[0131] Figure 12A and Figure 12B are explanatory diagrams regarding the opening of the independent package body 30. To prevent complication of the drawings, in Figure 12A and Figure 12B , the pattern (three-dimensional decorative portion 54, printing layer 60) of the independent package body 30 is omitted. As described above in Figure 5As shown, the individual package 30 has a packaging sheet 31 and a fixing band 32 that crosses the opening end 31O of the packaging sheet 31. In addition, as Figure 12A shown, the fixing band 32 has a non-adhesive pinch portion 321 and an adhesive portion 322 that protrudes downward with respect to the opening end 31O of the packaging sheet 31. When opening the individual package 30, the user holds the pinch portion 321 of the fixing band 32 and peels the adhesive portion 322 of the fixing band 32 from the packaging sheet 31.

[0132] Preferably, the maximum elongation strength when peeling the fixing band 32 from the packaging sheet 31 is smaller than the elongation strength when the adhesive layer 52 breaks when the decorative sheet 50 is elongated in the high-strength direction. More preferably, the maximum elongation strength when peeling the fixing band 32 from the packaging sheet 31 is smaller than the elongation strength when the decorative layer 53 breaks when the decorative sheet 50 is elongated in the high-strength direction.

[0133] In this way, even if a pulling force similar to that when peeling the fixing band 32 is applied to the decorative sheet 50 used for the package 40 or the individual package 30, the adhesive layer 52 and the decorative layer 53 are not easily broken. Thereby, it is possible to suppress a decrease in the appearance quality of the decorative sheet 50 and maintain the impression of high-quality performance for the sanitary napkin 1 as well. In particular, when the decorative sheet 50 is used for the packaging sheet 31, it is possible to more reliably suppress the breakage of the adhesive layer 52 and the decorative layer 53 when peeling the fixing band 32.

[0134] In addition, as Figure 5 shown, in the individual package 30, at both ends in the direction (width direction) along the opening end of the packaging sheet 31, the folded packaging sheets 31 are joined to each other by a plurality of welding portions 36. Preferably, the maximum elongation strength when opening the welding portion 36 is smaller than the elongation strength when the adhesive layer 52 breaks when the decorative sheet 50 is elongated in the high-strength direction. More preferably, the maximum elongation strength when opening the welding portion 36 is smaller than the elongation strength when the decorative layer 53 breaks when the decorative sheet 50 is elongated in the high-strength direction.

[0135] In this way, even if a pulling force similar to that when peeling open the folded packaging sheet 31 by peeling a plurality of welding portions 36 is applied to the decorative sheet 50 used for the package 40 or the individual package 30, the adhesive layer 52 and the decorative layer 53 are not easily broken. Thereby, it is possible to suppress a decrease in the appearance quality of the decorative sheet 50 and maintain the impression of high-quality performance for the sanitary napkin 1 as well. In particular, when the decorative sheet 50 is used for the packaging sheet 31, it is possible to more reliably suppress the breakage of the adhesive layer 52 and the decorative layer 53 when peeling a plurality of welding portions 36.

[0136] In addition, as Figure 3When the non-skin side of the sanitary napkin 1 shown is fixed to the packaging sheet 31 with the release sheet 33 interposed therebetween, the release sheet 33 is fixed to the packaging sheet 31 with an adhesive (not shown). Therefore, it is preferable that the maximum elongation strength in the case of separating the release sheet 33 from the packaging sheet 31 is smaller than the elongation strength at the time of breakage of the adhesive layer 52 when the decorative sheet 50 is elongated in the high-strength direction. Preferably, the maximum elongation strength in the case of separating the release sheet 33 from the packaging sheet 31 is smaller than the elongation strength at the time of breakage of the decorative layer 53 when the decorative sheet 50 is elongated in the high-strength direction.

[0137] In this way, even if a pulling force similar to that when separating the release sheet 33 from the packaging sheet 31 is applied to the decorative sheet 50 used for the package 40 or the individual package 30, the adhesive layer 52 and the decorative layer 53 are not easily broken. In particular, when the decorative sheet 50 is used for the packaging sheet 31, even if the user accidentally holds the release sheet 33 when removing the sanitary napkin 1 from the packaging sheet 31 and the packaging sheet 31 is elongated, breakage of the decorative layer 53 and the adhesive layer 52 can be suppressed. Thereby, a reduction in the appearance quality of the packaging sheet 31 can be suppressed.

[0138] The measurement method is as follows. As Figure 12A shown, the gripping portion 321 (gp) of the fixing band 32 is gripped and fixed by one chuck of a tensile testing machine, and the central portion in the left-right direction of the lower end portion of the individual package 30 is gripped by the other chuck (gp). Then, the distance between the chucks (example: 30 mm) is separated at a constant speed (example: 100 mm / minute), and the maximum value of the load during the period from the state where the bonding portion 322 of the fixing band 32 is joined to the packaging sheet 31 to peeling is obtained. This maximum value is set as the maximum elongation strength (N) during the period of peeling the fixing band 32 from the packaging sheet 31.

[0139] In the measurement of the maximum elongation strength (N) in the case of opening the welded portion 36, first, cut out from the individual package 30 Figure 12BThe region S shown. The region S is a region that includes the entire width of the welding portion 36 on one side in the width direction of the individual package 30 and extends 25 mm in width upward in the vertical direction from the opening end 31O. The packaging sheets 31 are cut out from both sides in the width direction of the individual package 30 within the range of the region S to form samples. The inner part (gp) in the width direction of the cut-out samples is clamped by the chucks of a tensile testing machine. In the case of the triple-folded individual package 30, in the sample, three layers of the packaging sheets 31 are stacked. One chuck clamps the first packaging sheet 31 starting from the upper side (the side where the opening end 31O is located), and the other chuck clamps the second and subsequent (second and third) packaging sheets 31 starting from the upper side. Then, the distance between the chucks (example: 30 mm) is separated at a constant speed (example: 100 mm / minute), and the sample is pulled along the width direction of the individual package 30. The load (elongation strength) applied during the period until all the welding portions 36 of the sample are peeled off is determined, and the maximum value (N) among them is obtained. The average value of the maximum values (N) of each sample on both sides in the width direction is set as the maximum elongation strength (N) in the case of opening the welding portion 36.

[0140] In addition, in the state where the sanitary napkin 1 is removed from the individual package 30 in the state of Figure 3 one chuck of a tensile testing machine clamps the end portion in the length direction of the packaging sheet 31, and the other chuck clamps the end portion in the length direction of the release sheet 33. The distance between the chucks (example: 20 mm) is separated at a constant speed (example: 100 mm / minute), and the maximum value of the load during the period until the packaging sheet 31 and the release sheet 33 are completely separated is determined. This maximum value is set as the maximum elongation strength (N) in the case of separating the release sheet 33 from the packaging sheet 31.

[0141] Regarding the method for measuring the elongation strength when the adhesive layer 52 or the decorative layer 53 breaks when the decorative sheet 50 is elongated in the high-strength direction, it is as described above.

[0142] In addition, when the decorative sheet 50 is used for the storage body 41 provided in the package body 40, the following is preferable. Preferably, when the storage body 41 is observed from above, the three-dimensional decorative portion 54 (the adhesive layer 52 and the decorative layer 53) does not overlap with the fracture predetermined region Rc that breaks during opening. Observing the storage body 41 from above means observing the storage body 41 with the surface provided with the fracture predetermined region Rc facing upward. And when the three-dimensional decorative portion 54 is provided on the surface provided with the fracture predetermined region Rc, preferably, the fracture predetermined region Rc does not overlap with the three-dimensional decorative portion 54. In other words, it is preferable that the three-dimensional decorative portion 54 is not located at a position straddling the fracture predetermined region Rc and the end portion of the three-dimensional decorative portion 54 does not reach the fracture predetermined region Rc.

[0143] For example, in Figure 7 andFigure 8 In the storage body 41, a predetermined breakage area Rc is provided on its back surface 41B, and there is no three-dimensional decoration portion 54 on the back surface 41B. Therefore, the three-dimensional decoration portion 54 does not overlap with the predetermined breakage area Rc. In Figure 11A In the storage body 41, a predetermined breakage area Rc is provided on its side surface 41s, and there is no three-dimensional decoration portion 54 on the side surface 41s. Therefore, the three-dimensional decoration portion 54 does not overlap with the predetermined breakage area Rc. In Figure 11B In the storage body 41, a three-dimensional decoration portion 54 is provided at a position below the predetermined breakage area Rc, and the three-dimensional decoration portion 54 does not overlap with the predetermined breakage area Rc.

[0144] In the above case, when the storage body 41 is opened, even if the decorative sheet 50 is cut along the predetermined breakage area Rc, the three-dimensional decoration portion 54 will not be cut. Therefore, the shape and appearance quality of the three-dimensional decoration portion 54 can be maintained even after opening. In addition, assuming that the predetermined breakage area Rc overlaps with the three-dimensional decoration portion 54, there is a risk that the adhesive layer 52 stretches during opening, or the three-dimensional decoration portion 43 detaches from the sheet 51. Therefore, by setting the three-dimensional decoration portion 54 not to overlap with the predetermined breakage area Rc, the above risks can be avoided, the breakage ease of the predetermined breakage area Rc can be ensured, and the situation where the three-dimensional decoration portion 54 detaches from the sheet 51 can be suppressed.

[0145] In addition, in Figure 11B In the case of the storage body 41, the portion above the predetermined breakage area Rc is likely to be discarded after opening. Therefore, preferably, the three-dimensional decoration portion 54 is provided at a position below the predetermined breakage area Rc (on the side of the sealing portion 46). In this way, the user can appreciate the three-dimensional decoration portion 54 even after the storage body 41 is opened.

[0146] In addition, when the decorative sheet 50 is used for the storage body 41 of the package 40, preferably, the three-dimensional decoration portion 54 (the adhesive layer 52 and the decoration layer 53) is provided on one of the multiple surfaces of the storage body 41 and not on the opposite surface of the one surface. For example, in Figure 6A In the storage body 41, the three-dimensional decoration portion 54 is provided only on the front surface 41F of the storage body 41 ( Figure 7 ), and the three-dimensional decoration portion 54 is not provided on the opposite back surface 41B ( Figure 8 ).

[0147] As long as a three-dimensional decoration part 54 is provided on one surface of the storage body 41, it can give the user who visually recognizes the three-dimensional decoration part 54 the impression that the sanitary napkin 1 can also be easily deformed three-dimensionally like the three-dimensional decoration part 54. On the other hand, the surface on the opposite side of the storage body 41 is not easily visually recognized by the user in a store or the like. Therefore, it is preferable not to provide the three-dimensional decoration part 54 on the surface on the opposite side of the storage body 41 and not to provide the three-dimensional decoration part 54 on the storage body 41 unnecessarily. In this way, the risk of breakage and detachment of the three-dimensional decoration part 54 can be reduced. Thereby, the reduction of the appearance quality of the storage body 41 can be suppressed, and the impression that the sanitary napkin 1 also maintains high-quality performance can be maintained.

[0148] Moreover, it may also be the case that, like the storage body 41 in Figure 6A , the three-dimensional decoration part 54 is provided only on one surface among the multiple surfaces of the storage body 41, and the three-dimensional decoration part 54 is not provided on the other surfaces other than this one surface. In this case, the risk of breakage and detachment of the three-dimensional decoration part 54 can be further reduced. In addition, in this case, it is preferable to provide the three-dimensional decoration part 54 on the front surface 41F of the storage body 41. In this way, in a store or the like, the three-dimensional decoration part 54 is easily visually recognized by the user. In addition, as the front surface 41F of the storage body 41, the largest surface among the multiple surfaces of the storage body 41, the surface on which the sales name (brand name), the storage quantity, etc. are greatly recorded can be exemplified.

[0149] However, it is not limited to the above situation. The three-dimensional decoration part 54 may also be provided on multiple surfaces of the storage body 41, may be provided on a surface other than the front surface 41F, or may be provided on both a certain surface and the surface on the opposite side of this surface.

[0150] In addition, it may also be the case that the three-dimensional decoration part 54 is arranged across a certain surface (example: the front surface 41f) of the storage body 41 and a surface adjacent to this certain surface (example: any one of the upper surface 41u, the lower surface 41l, and the side surface 41s). For example, in Figure 11A 's storage body 41, the three-dimensional decoration part 54 (pattern d6) is arranged across the front surface 41f and the upper surface 41u of the storage body 41. In this way, when the storage body 41 is visually recognized from a certain surface (the front surface 41f), a sense of depth is generated in the three-dimensional decoration part 54, and the three-dimensional decoration part 54 is visually recognized more three-dimensionally.

[0151] In addition, when the decorative sheet 50 is used for the storage body 41 of the encapsulation body 40, it is preferable that the three-dimensional decoration part 54 is provided on the surface of the storage body 41 where the breakage predetermined area Rc is not provided among the multiple surfaces of the storage body 41. For example, in Figure 6A 's storage body 41, the three-dimensional decoration part 54 is provided on the front surface 41f of the storage body 41 and is not provided on the back surface 41B and the upper surface of the storage body 41 where the breakage predetermined area Rc exists. In Figure 11AIn the storage body 41, the three-dimensional decoration part 54 is provided on the front surface 41f of the storage body 41 and not provided on the side surface of the storage body 41 where the breakage predetermined area Rc exists.

[0152] When opening the storage body 41, it is easy for the user to hold the surface of the storage body 41 where the breakage predetermined area Rc exists. However, in the above structure, it is not easy for the user to touch the three-dimensional decoration part 54. In addition, in the above structure, the force applied by the user to pull the storage body 41 (for example, the force to pull the sealing member 43) is not likely to act on the three-dimensional decoration part 54. Therefore, breakage of the three-dimensional decoration part 54 can be suppressed, and the appearance quality of the package 40 can be maintained. In addition, it is possible to prevent the three-dimensional decoration part 54 from falling off and adhering to the user or the sanitary napkin 1.

[0153] In addition, when the decorative sheet 50 has an information identification part 65 indicating information related to the sanitary napkin 1 stored therein, it is preferable that the information identification part 65 is formed by an ink-based printing layer 60 that does not overlap with the three-dimensional decoration part 54 (the adhesive layer 52 and the decorative layer 53). As the information identification part 65, an example can be given of an identification of the type of product of the storage body 41 provided in the package 40 ( Figure 7 such as "winged sanitary napkin", "daily use", size, etc.), an identification of the number of independent packages 30 stored in the storage body 41 ( Figure 7 such as "10 pieces"). In addition, although not shown in the drawings, an identification of the type of product (such as "winged", "daily use", etc.) provided on the packaging sheet 31 of the independent package 30 can be exemplified.

[0154] The probability of peeling of the information identification part 65 formed as the flat printing layer 60 is lower than that of the three-dimensional decoration part 54. Thus, the article identification part 65, which is the information that the user wants to know when purchasing or using the product, can be shown to the user more reliably.

[0155] In addition, as Figure 6A shown, in the package 40 (storage body 41), a coded identification part 61 (barcode, QR code (registered trademark), etc.) that can be read by an optical reading device is mostly provided. When the decorative sheet 50 is used for the package 40 and has the coded identification part 61, it is preferable that 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.

[0156] Compared with the three-dimensional decoration part 54, the outline of the decoration formed by the ink-based printing layer 60 is clearer. Therefore, since the coded identification part 61 is formed not by the three-dimensional decoration part 54 but by the flat printing layer 60, the visual recognition property is improved and it can be accurately read by the reading device.

[0157] In addition, as Figure 6AAs shown, there is the following situation: in the package 40, information related to the contained sanitary napkin 1 is centrally recorded in a table or the like. This 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.

[0158] In addition, as Figure 7 shown, in the package 40 (accommodation body 41), an article identification part 62 indicating the contained sanitary napkin 1 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 decorative layer 53).

[0159] 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 contained sanitary napkin 1 is also three-dimensionally deformed and fitted. In addition, in the case of a package 40 such as Figure 7 and Figure 8 illustrated, which 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 accommodation 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.

[0160] 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 the wing part 1w, daily use, night use, etc.) are shown together with the contained sanitary napkin 1. In Figure 8 , since the sanitary napkin group identification part 64 is provided on the back surface 41B (opening surface) of the accommodation 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 contained sanitary napkin 1 is three-dimensionally deformed but also other sanitary napkins are three-dimensionally deformed.

[0161] However, it is not limited to the above situation. Each identification (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.

[0162] Alternatively, it may also be that the decorative sheet 50 not only has the three-dimensional decoration portion 54, but also has a flat printing layer 60 provided on the surface of the sheet 51, that is, a normal printing layer 60 formed by printing with ink. In this case, it is preferable that the three-dimensional decoration portion 54 (the adhesive layer 52 and the decoration layer 53) is provided on top of the partial printing layer 60. For example, in Figure 7 , the three-dimensional decoration portion 54 having the same curved pattern d1 is provided overlapping on top of the printing layer 60 which is a plurality of curved patterns p1. In addition, the three-dimensional decoration portion 54 having the pattern d2 of the petals is provided overlapping on top of the printing layer 60 representing the color p2 of the flower.

[0163] In this way, the local bulge of the decoration presented by the printing 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 decoration portion 54, compared with the case where all the decorations are the three-dimensional decoration portion 54, the three-dimensional decoration portion 54 is more likely to stand out. Therefore, it is easy for the user to focus on the three-dimensional decoration portion 54 and is likely to have an impression that the sanitary napkin 1 is also three-dimensionally deformed. In addition, the printing layer 60 is covered by the three-dimensional decoration portion 54, so that the printing layer 60 becomes less likely to peel off. On the contrary, even if the three-dimensional decoration portion 54 peels off from the sheet 51, the printing layer 60 can be visually recognized. Thereby, it is possible to suppress a reduction in the appearance quality of the decorative sheet 50 and also ensure a high-quality impression of the sanitary napkin 1 for the user.

[0164] In addition, it is preferable that the maximum thickness of the adhesive layer 52 is larger than the maximum thickness of the decoration 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 decoration layer 53 is in the range of about 4 to 6 μm. In this way, the thinner decoration layer 53 can protrude further from the surface of the surrounding sheet 51. Therefore, the three-dimensional decoration portion 54 becomes more three-dimensional, and it is easy for the user to recognize the case where there is a three-dimensional decoration. In addition, as described above, the thickness of the decoration layer 53 (for example Figure 9 of 53t) is set as the length in the direction orthogonal to the surface of the decoration layer 53. The thickness of the adhesive layer 52 (for example Figure 9 the thickness t2) is set as the length in the thickness direction of the sheet 51.

[0165] In addition, it is preferable that the three-dimensional decoration portion 54 (the portion where the decoration layer 53 and the adhesive layer 52 overlap) has portions with different thicknesses. For example, in Figure 9 of the three-dimensional decoration portion 54, the central portion in a predetermined direction is recessed and the thickness becomes thinner. In Figure 10A of the three-dimensional decoration portion 54, the thickness of the end portion in a predetermined direction is thinner than the thickness of the adjacent portion. In this way, it is easier to visually recognize the three-dimensional decoration portion 54 three-dimensionally, so that the user is likely to have an impression that the sanitary napkin 1 is also three-dimensionally deformed and fits.

[0166] In addition, it is preferable that, as Figure 9, Figure 10A and Figure 10B As shown, in the three-dimensional decoration part 54, the thickness of the end part 54E in a predetermined direction is smaller than the thickness of the part 54I adjacent to the end part 54E and on the inner side in the predetermined direction. In this way, the three-dimensional decoration part 54 bulges from the end part 54E toward the part 54I on the inner side in the predetermined direction and can be visually recognized, and it is easier to visually recognize the three-dimensional decoration part 54 three-dimensionally.

[0167] In addition, as Figure 9 and Figure 10B shown, it is preferable that the central part in the predetermined direction (on the side of the sheet 51 in the thickness direction) in the three-dimensional decoration part 54 is recessed. In this way, the surface of the three-dimensional decoration part 54 becomes an uneven shape, and it is easier to visually recognize the three-dimensional decoration part 54 three-dimensionally. However, it is not limited to the above situation, and it may be that, as Figure 10A shown, the thickness of the part of the three-dimensional decoration part 54 other than the end part in the predetermined direction is constant, or it may be that the central part in the predetermined direction of the three-dimensional decoration part 54 bulges convexly and has a larger thickness.

[0168] In addition, as Figure 9 and Figure 10A shown, it is preferable that the adhesive layer 52 has an overhanging part 52E that protrudes to one side in the predetermined direction with respect to the decoration layer 53. The adhesive layer 52 can protrude to both sides in the predetermined direction as shown in the figure, or can protrude only to one side in the predetermined direction. When an external force acts on the decorative sheet 50 (here, the storage body 41), the force is easily applied to the overhanging part 52E that is the end 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, the maximum thickness t1 of the overhanging part 52E of the adhesive layer 52 is smaller than the maximum thickness t2 of the part of the adhesive layer 52 that overlaps with the decoration layer 53 (t1 < t2), so that the overhanging part 52 is more easily deformed following the sheet 51. In addition, since the decoration layer 53 is not located at the end where the force is easily applied, the peeling of the adhesive layer 52 and the decoration layer 53 and the cracking of the decoration layer 53 can be suppressed. The user who visually recognizes the three-dimensional decoration part 54 with good quality is likely to have the impression that the sanitary napkin 1 is also a high-quality product.

[0169] In addition, it is preferable that the length L1 in the predetermined direction of the overhanging part 52E is shorter than the length L2 in the predetermined direction of the part of the adhesive layer 52 that overlaps with the decoration layer 53 (L1 < L2). By not making the overhanging part 52E unnecessarily long, the situation where the aesthetic property (such as a metallic luster) generated by the decoration layer 53 is reduced can be prevented. However, it is not limited to the above situation, and it may be that, as Figure 10BAs shown, the adhesive layer 52 does not have the protruding portion 52E. That is, it is also possible that the entire surface area of the adhesive layer 52 is covered by the decorative layer 53.

[0170] So far, the relationships of 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, comparison can be made by visually observing the object part, or by comparing based on an image obtained by magnifying the object part using an optical microscope and taking a picture. In addition, comparison can also be made according to the cross-sectional image obtained by cutting the object part.

[0171] === Manufacturing method of the decorative sheet 50 ===

[0172] Figure 13 is a diagram for explaining the manufacturing method of the decorative sheet 50. The aforementioned decorative sheet 50 can be manufactured using Figure 13 the manufacturing apparatus 70 illustrated. 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.

[0173] The conveying mechanism 71 is a mechanism for conveying the continuous body 51c of the sheet 51 in the conveying direction. As the conveying mechanism 71, the conveying rollers shown in Figure 13 and the 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 in the conveying direction by the conveying mechanism 71 to form a flat normal printed layer 60.

[0174] On its downstream side, the adhesive ejection device 73 directly ejects the adhesive for forming the adhesive layer 52 onto the continuous body 51c of the sheet 51, or ejects the adhesive for forming the adhesive layer 52 onto the printed layer 60. In the present embodiment, a colorless and transparent ultraviolet curable adhesive is ejected. After that, 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, the adhesiveness is ensured. For this purpose, the intensity and irradiation time of the ultraviolet rays are adjusted.

[0175] In the present embodiment, an inkjet device is exemplified as the ink ejection device 72 and the adhesive ejection device 73. However, it is not limited thereto. For example, various printing methods (liquid coating methods) such as gravure printing and offset printing can also be used to form the printed layer 60 and the adhesive layer 52.

[0176] Thereafter, the decoration layer conveying mechanism 75 supplies the continuum 53c of the decoration layer 53 onto the adhesive layer 52. The decoration layer conveying mechanism 75 may include a device including a delivery roller (not shown) for delivering the continuum 53c of the decoration layer 53, a conveying roller 751, and a winding roller (not shown) for winding up the remaining portion of the continuum 53c of the decoration layer 53.

[0177] The length of the continuous body 53c of the decorative layer 53 in the direction perpendicular to the conveying direction is set to be greater than the length of the region where the adhesive layer 52 is formed. That is, it is set that the one or more adhesive layers 52 formed on the continuous body 51c of the sheet 51 are all covered by the continuous body 53c of the decorative layer 53. In addition, the continuous body 53c of the decorative layer 53 is supplied in a manner in contact with the surface of the adhesive layer 52. The adhesive layer 52 has adhesiveness, so the continuous body 53c of the decorative layer 53 is attached to the adhesive layer 52. During this time, the continuous body 53c of the decorative layer 53 and the adhesive layer 52 are also conveyed, and the decorative layer 53 attached 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 continuous body 53c of the decorative layer 53 that is not attached to the adhesive layer 52 is wound on a winding roller and recovered.

[0178] Finally, the second irradiation device 76 irradiates light (ultraviolet rays in this case) for curing the adhesive layer 52, and completely cures the adhesive layer 52 via the decorative layer 53. Thus, the adhesive layer 52 and the decorative layer 53 are firmly bonded and integrated, and the three-dimensional decorative portion 54 is formed.

[0179] According to the above manufacturing method, the decorative layer 53 can be provided on the adhesive layer 52, and a three-dimensional decorative portion 54 can be formed in which the decorative layer 53 protrudes from the surface of the sheet 51 in the thickness direction of the sheet 51. By using the decorative sheet 50 formed with the three-dimensional decorative portion 54 in at least one of the individual packaging body 30 of the sanitary napkin and the packaging body 40 of the sanitary napkin, the user can be given the impression that the product is three-dimensional. However, the above manufacturing method is an example, and the manufacturing method of the decorative sheet 50 is not particularly limited.

[0180] The above embodiments are for easy understanding of the present invention and are not intended to limit the present invention. The present invention can be changed and improved without departing from the gist thereof, and it is needless to say that the present invention includes equivalents thereof.

Claims

1. A decorative sheet for an absorbent product, characterized in that: The decorative sheet for absorbent products is used for an individual package of an absorbent article or a package of an absorbent article and is decorated. The decorative sheet for absorbent products has: A sheet having longitudinal and transverse directions orthogonal to each other; 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. The absorbent article comprises an absorbent body. 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 setting the amount of extension of the absorbent body when the absorbent body is broken when the absorbent body is extended in the width direction of the absorbent article as a second amount of extension, At this time, the first elongation is greater than the second elongation.

2. The decorative sheet for absorbent products according to claim 1, characterized in that: When the amount of extension of the absorbent body when the absorbent body is broken when the absorbent body is extended in the longitudinal direction of the absorbent article is defined as a third amount of extension, The first elongation is greater than the third elongation.

3. The decorative sheet for absorbent products according to claim 1 or 2, characterized in that: When the elongation amount of the decorative sheet when the decorative layer is broken when the decorative sheet is elongated in the direction with higher elongation strength is defined as a fourth elongation amount, The fourth elongation is greater than the second elongation.

4. The decorative sheet for absorbent products according to claim 1 or 2, characterized in that: The storage body of the package of the absorbent article has a predetermined breaking area which breaks when the package is opened. The maximum elongation strength when the planned breaking region is broken is smaller than the elongation strength when the adhesive layer is broken when the decorative sheet is stretched in the direction in which the elongation strength is high.

5. The decorative sheet for absorbent products according to claim 4, characterized in that: The maximum elongation strength when the planned breaking region is broken is smaller than the elongation strength when the decorative layer is broken when the decorative sheet is stretched in the direction in which the elongation strength is high.

6. The decorative sheet for absorbent products according to claim 5, characterized in that: The decorative sheet for the absorbent product is used in the storage body. The packaging body of the absorbent article includes a sealing member covering the planned rupture area. The predetermined rupture region is ruptured by pulling the sealing member.

7. The decorative sheet for absorbent products according to claim 1 or 2, characterized in that: The individual packaging body of the absorbent article comprises a packaging sheet and a fixing belt spanning an unsealed end of the packaging sheet. The maximum elongation strength when the fixing tape is peeled off from the packaging sheet is smaller than the elongation strength when the decorative layer is broken when the decorative sheet is stretched in the direction in which the elongation strength is high.

8. The decorative sheet for absorbent products according to claim 1 or 2, characterized in that: The individual packaging body of the absorbent article has a packaging sheet, At both ends of the packaging sheet along the direction of the unsealed end, the folded packaging sheets are joined to each other by a welded portion. The maximum elongation strength when the welded portion is opened is smaller than the elongation strength when the decorative layer is broken when the decorative sheet is elongated in the direction in which the elongation strength is high.

9. The decorative sheet for absorbent products according to claim 1 or 2, characterized in that: The decorative sheet for absorbent products is used in a storage body provided in a packaging body of the absorbent article. The storage body has a predetermined breaking region that breaks when unsealed, When the storage body is viewed from above, the adhesive layer and the decorative layer do not overlap with the planned breaking region.

10. The decorative sheet for absorbent products according to claim 1 or 2, characterized in that: The decorative sheet for absorbent products is used in a storage body provided in a packaging body of the absorbent article. The adhesive layer and the decorative layer are provided on one of the plurality of surfaces of the storage body and are not provided on a surface opposite to the one of the surfaces.

11. The decorative sheet for absorbent products according to claim 1 or 2, characterized in that: The decorative sheet for absorbent products is used in a storage body provided in a packaging body of the absorbent article. The storage body has a predetermined breaking region that breaks when unsealed, The adhesive layer and the decorative layer are provided on a surface on which the planned breaking region is not provided, among a plurality of surfaces of the storage body.

12. The decorative sheet for absorbent products according to claim 1 or 2, characterized in that: The decorative sheet for absorbent products has an information marking portion indicating information related to the absorbent article. The information marking portion is formed by a printed layer that does not overlap with the adhesive layer and the decorative layer.

13. The decorative sheet for absorbent products according to claim 1 or 2, characterized in that: The decorative layer is a layer formed of any one of a metal foil, a holographic foil, and a pigment foil.

Images