Decorative sheet for absorbent product

Abstract

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

Description

Technical Field

[0001] This utility model relates to a decorative sheet for absorbent products. Background Technology

[0002] Patent Document 1 discloses a method for manufacturing a decorative sheet in which a marking layer (text, graphics, etc.) made of foil with metallic components is formed on a material sheet. Specifically, the manufacturing method is as follows: a transfer film having foil and a material sheet are fed overlappingly between a pattern roller and a support roller, and a foil corresponding to the pattern on the outer peripheral surface of the pattern roller is pressed onto the material sheet to form a marking layer.

[0003] Existing technical documents

[0004] Patent documents

[0005] Patent Document 1: Japanese Patent Application Publication No. 2022-12041 Utility Model Content

[0006] Problems to be solved by utility models

[0007] For absorbent articles such as sanitary napkins and disposable diapers, it is desirable for them to conform to the wearer's body in a three-dimensional way, thus minimizing leakage. However, in the decorative sheet of Patent Document 1, the label layer is formed by pressing foil together. Therefore, the label layer becomes concave relative to its surroundings and becomes smooth. Thus, if the decorative sheet of Patent Document 1 is used in absorbent articles, individual packaging of absorbent articles, or encapsulation of absorbent articles, the user visually perceives the concave, smooth label layer before using the absorbent article. This may lead the user to perceive the absorbent article as a flat product, similar to the label layer, and potentially cause concern about whether the absorbent article conforms to the body in a three-dimensional way.

[0008] This invention was made in view of the problems mentioned above, and its purpose is to give users who visually recognize the decorative layer of the decorative sheet used in any of the absorbent articles, the independent packaging of absorbent articles, and the encapsulation of absorbent articles the impression that the absorbent articles are products that can be easily deformed and fit in three dimensions.

[0009] Solution for solving the problem

[0010] The main utility model for achieving the above objectives is a decorative sheet for absorbent products, characterized in that...

[0011] The decorative sheet for absorbent products is used on any of the following: absorbent articles, individual packaging of absorbent articles, and encapsulation of absorbent articles, and is decorated accordingly.

[0012] The decorative sheet used in this absorbent product has the following characteristics:

[0013] piece;

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

[0015] A decorative layer, disposed above the adhesive layer, has a maximum thickness of less than 10 μm.

[0016] The decorative layer is located in a region that is visually recognizable to the user and protrudes from the surface of the sheet in the thickness direction of the sheet.

[0017] The main utility model for achieving the above objectives is a decorative sheet for absorbent products, characterized in that...

[0018] The decorative sheet for absorbent products is used on any of the following: absorbent articles, individual packaging of absorbent articles, and encapsulation of absorbent articles, and is decorated accordingly.

[0019] The decorative sheet used in this absorbent product has the following characteristics:

[0020] piece;

[0021] An adhesive layer is disposed on the surface of the sheet; and

[0022] A decorative layer, disposed above the adhesive layer, has a maximum thickness of less than 10 μm.

[0023] The decorative layer is located in a region that is visually visible to the user and protrudes from the surface of the sheet in the thickness direction of the sheet.

[0024] The overlapping areas of the decorative layer and the adhesive layer have different thicknesses.

[0025] At the location where the decorative layer overlaps with the adhesive layer, the thickness of the end in a predetermined direction is smaller than the thickness of the portion adjacent to that end on the inner side of the predetermined direction.

[0026] Preferably, the central portion of the area where the decorative layer overlaps with the adhesive layer is recessed in a predetermined direction.

[0027] Preferably, at the location where the decorative layer overlaps with the adhesive layer, the central portion in a predetermined direction is recessed, and the adhesive layer has a protrusion extending to one side relative to the decorative layer in a predetermined direction, the maximum thickness of the protrusion being smaller than the maximum thickness of the portion of the adhesive layer overlapping the decorative layer.

[0028] Preferably, at the location where the decorative layer overlaps with the adhesive layer, the central portion in a predetermined direction is recessed, the adhesive layer has a protrusion extending in a predetermined direction relative to the decorative layer, the maximum thickness of the protrusion is smaller than the maximum thickness of the portion of the adhesive layer overlapping the decorative layer, and the length of the protrusion in the predetermined direction is shorter than the length of the portion of the adhesive layer overlapping the decorative layer in the predetermined direction.

[0029] Preferably, at the location where the decorative layer overlaps with the adhesive layer, the central portion in a predetermined direction is recessed, the adhesive layer has a protrusion extending in a predetermined direction relative to the decorative layer, the maximum thickness of the protrusion is smaller than the maximum thickness of the portion of the adhesive layer overlapping the decorative layer, the length of the protrusion in the predetermined direction is shorter than the length of the portion of the adhesive layer overlapping the decorative layer in the predetermined direction, and the maximum thickness of the adhesive layer is greater than the maximum thickness of the decorative layer.

[0030] Preferably, the decorative layer is formed from any one of metal foil, holographic foil, or pigment foil.

[0031] Preferably, the absorbent article has a compression portion formed by compressing the surface sheet from the skin side, and the minimum width of the decorative layer is smaller than the minimum width of the compression portion.

[0032] Preferably, the absorbent article has a compression portion formed by compressing the surface sheet from the skin side, and the maximum thickness of the portion where the decorative layer overlaps with the adhesive layer is smaller than the minimum depth of the compression portion.

[0033] Preferably, the decorative sheet for the absorbent product has a printed layer on the surface of the sheet, and the adhesive layer and the decorative layer are disposed on a portion of the printed layer.

[0034] Preferably, the decorative sheet for the absorbent product is used in the independent packaging of the absorbent article or the encapsulation of the absorbent article, the absorbent article having an absorbent core and a core sheet covering the surface of the absorbent core, the decorative sheet having mutually orthogonal longitudinal and transverse directions, the elongation of the decorative sheet when the adhesive layer breaks when the decorative sheet elongates in the direction with higher elongation strength in the longitudinal and transverse directions is defined as a first elongation, and the elongation of the core sheet when the core sheet breaks when the core sheet elongates in the width direction of the absorbent article is defined as a second elongation, in which case the first elongation is greater than the second elongation.

[0035] Preferably, the decorative piece has mutually orthogonal longitudinal and transverse directions, and has a first adhesive layer and a second adhesive layer. When the decorative piece is elongated in the direction with higher elongation strength in the longitudinal and transverse directions, the elongation of the decorative piece when the first adhesive layer breaks is different from the elongation of the decorative piece when the second adhesive layer breaks.

[0036] Preferably, the decorative sheet for absorbent products is used in the independent packaging of the absorbent article or the encapsulation of the absorbent article, and has a welded portion that houses and seals the absorbent article inside, and the welded portion can be visually identified when the decorative layer is viewed from above.

[0037] Preferably, the absorbent article has an absorbent core comprising a highly absorbent polymer, and the minimum width of the decorative layer is smaller than the average particle size of the highly absorbent polymer.

[0038] Preferably, the decorative sheet for absorbent products is used in the packaging of the absorbent article and has a coded marking portion formed by a printed layer that does not overlap with the adhesive layer and the decorative layer.

[0039] Preferably, the decorative sheet for the absorbent product is used in the encapsulation of the absorbent article and has an article identification portion indicating the absorbent article, the article identification portion being formed by the adhesive layer and the decorative layer.

[0040] Other features of this utility model will be explained by the description in this specification and the accompanying drawings.

[0041] Effects of the utility model

[0042] According to this utility model, the decorative layer of the decorative sheet used in any of the absorbent articles, the individual packaging of absorbent articles, and the encapsulation of absorbent articles can give users the impression that the absorbent articles are products that can be easily deformed and fit in three dimensions. Attached Figure Description

[0043] Figure 1 This is a top view of the unfolded sanitary napkin 1, viewed from the skin side.

[0044] Figure 2 This is a simplified cross-sectional view of sanitary napkin 1.

[0045] Figure 3 This is a top view of the individually packaged sanitary napkin 30 in its unfolded state, viewed from the non-skin side.

[0046] Figure 4 This is a top view obtained by observing the individually packaged sanitary napkin 30 unfolded from the skin side.

[0047] Figure 5 This is a top view of the individual packaging unit 30 of the sanitary napkin.

[0048] Figure 6A This is a 3D view of the packaging body 40 of a sanitary napkin. Figure 6B This diagram shows the state of the container 41 after it has been opened.

[0049] Figure 7 This is the front view of package 40.

[0050] Figure 8 This is the rear view of package 40.

[0051] Figure 9 This is a diagram illustrating decorative piece 50.

[0052] Figure 10A and Figure 10B This is a diagram illustrating decorative piece 50.

[0053] Figure 11 This is a partial front view of the independent package 30.

[0054] Figure 12 This diagram illustrates the manufacturing method of decorative piece 50.

[0055] Explanation of reference numerals in the attached figures

[0056] 1. Sanitary napkin (absorbent); 2. Surface sheet; 3. Middle sheet; 4. Back sheet; 5. Wings; 6. Side sheets; 8. Adhesive part; 9. Adhesive part; 10. Absorbent body; 11. Absorbent core; 12. Core packing sheet; 20. Compression part; 30. Individual packaging of sanitary napkin; 31. Packaging sheet; 32. Fixing strap; 33. Release tab; 34. Release tab; 35. Joining part; 36. Welded part; 40. Encapsulation body of sanitary napkin; 41. Storage body; 42. Main body; 4 3. Sealing component; 50. Decorative piece; 51. Sheet; 52. Adhesive layer; 52E. Protrusion; 53. Decorative layer; 54. Three-dimensional decorative part; 60. Printing layer; 61. Coding and marking part; 62. Item marking part; 63. Information marking group; 64. Sanitary napkin group marking part; 70. Manufacturing device; 71. Conveying mechanism; 72. Ink ejection device; 73. Adhesive ejection device; 74. First irradiation device; 75. Decorative layer conveying mechanism; 76. Second irradiation device. Detailed Implementation

[0057] Based on the description in this specification and the accompanying drawings, at least the following matters are explained.

[0058] Method 1 is a decorative sheet for absorbent products, characterized in that the decorative sheet for absorbent products is used in any of the following: absorbent articles, individual packaging of absorbent articles, and encapsulation of absorbent articles, and is decorated thereon. The decorative sheet for absorbent products comprises: a sheet; an adhesive layer disposed on the surface of the sheet; and a decorative layer disposed on the adhesive layer and having a maximum thickness of 10 μm or less. The decorative layer is disposed in a position that is visually recognizable to the user and protrudes from the surface of the sheet in the thickness direction of the sheet.

[0059] According to method 1, even the thinnest decorative layer can protrude in the thickness direction of the sheet by overlapping with the adhesive layer. This gives the user the impression that the absorbent material also deforms and fits in a three-dimensional way, as the decorative layer appears to protrude and become three-dimensional.

[0060] (Method 2) Based on the decorative sheet for absorbent products described in Method 1, the overlapping portion of the decorative layer and the adhesive layer has a portion with a different thickness.

[0061] Method 2 makes it easier to visually identify the decorative layer in three dimensions. This gives the user the impression that the absorbent material also deforms and fits in a three-dimensional way.

[0062] (Method 3) Based on the decorative sheet for absorbent products described in Method 2, at the location where the decorative layer overlaps with the adhesive layer, the thickness of the end in a predetermined direction is smaller than the thickness of the portion adjacent to that end on the inner side of the predetermined direction.

[0063] According to method 3, the decorative layer, which protrudes from the ends toward the inside, is more easily perceived in a three-dimensional way. This gives the user the impression that the absorbent material also deforms and conforms to the body in a three-dimensional manner.

[0064] (Method 4) Based on the decorative sheet for absorbent products described in Method 2 or 3, the central portion of the area where the decorative layer overlaps with the adhesive layer is recessed in a predetermined direction.

[0065] According to method 4, the surface of the decorative layer becomes textured, making it easier to visually identify the decorative layer in three dimensions. This gives the user the impression that the absorbent material also deforms and conforms to the body in a three-dimensional way.

[0066] (Method 5) Based on the decorative sheet for absorbent products described in any of Methods 1 to 4, the adhesive layer has a protrusion extending in a predetermined direction relative to the decorative layer, the maximum thickness of the protrusion being smaller than the maximum thickness of the portion of the adhesive layer that overlaps with the decorative layer.

[0067] According to method 5, the thickness of the protrusion is smaller, thereby suppressing the reduction of the visual recognizability of the decorative layer. The decorative layer is not located at the end where force can be easily applied, thus suppressing cracking and peeling of the decorative layer and maintaining its quality. This gives the user the impression that the absorbent material is also of high quality.

[0068] (Method 6) Based on the decorative sheet for absorbent products described in any of Methods 1 to 5, the adhesive layer has a protrusion extending in a predetermined direction relative to the decorative layer, the length of the protrusion in the predetermined direction being shorter than the length of the portion of the adhesive layer that overlaps with the decorative layer in the predetermined direction.

[0069] According to method 6, the protrusion is shorter, thus preventing a decrease in the aesthetic appeal of the decorative layer. The decorative layer is not located at the end where force can be easily applied, thereby preventing cracking and peeling and maintaining the quality of the decorative layer. This gives the user the impression that the absorbent material is also of high quality.

[0070] (Method 7) Based on the decorative sheet for absorbent products described in any of Methods 1 to 6, the maximum thickness of the adhesive layer is greater than the maximum thickness of the decorative layer.

[0071] According to method 7, the decorative layer can be made to protrude further in the thickness direction of the sheet, making it easier to visually identify the decorative layer in three dimensions.

[0072] (Method 8) Based on the decorative sheet for absorbent products described in any of Methods 1 to 7, the decorative layer is a layer formed from any of the following: metal foil, holographic foil, and pigment foil.

[0073] According to method 8, the aesthetic appeal of the three-dimensional decorative layer can be enhanced. Users who visually recognize decorative layers formed from metallic foil or holographic foil can get the impression that the absorbent material is a high-quality product. On the other hand, decorative layers formed from pigment foil become matte finishes, giving users the impression that the product offers a stable and reassuring feel.

[0074] (Method 9) Based on the decorative sheet for absorbent products described in any of Methods 1 to 8, the absorbent article has a compression portion formed by compressing the surface sheet from the skin side, and the minimum width of the decorative layer is smaller than the minimum width of the compression portion.

[0075] According to method 9, users who visually recognize a decorative layer with a smaller width can get the impression that the absorbent material is a soft product that is delicate and can be flexibly deformed. Moreover, users who visually recognize a decorative layer are likely to have the impression that the absorbent material can easily deform starting from a compression section with sufficient width.

[0076] (Method 10) Based on the decorative sheet for absorbent products described in any of Methods 1 to 9, the absorbent article has a compression portion formed by compressing from the skin side of the surface sheet, wherein the maximum thickness of the portion where the decorative layer overlaps with the adhesive layer is smaller than the minimum depth of the compression portion.

[0077] According to method 10, the thickness of the decorative layer and adhesive layer can be suppressed, and peeling caused by clipping can be suppressed. Moreover, the visual impression of the decorative layer is that the absorbent material is easily deformed starting from the compression part with sufficient depth.

[0078] (Method 11) Based on the decorative sheet for absorbent products described in any of Methods 1 to 10, the decorative sheet for absorbent products has a printed layer provided on the surface of the sheet, and the adhesive layer and the decorative layer are provided on a portion of the printed layer.

[0079] According to method 11, even if the adhesive layer and decorative layer peel off, the printed layer can still be visually identified, thus preventing a decrease in the quality of the decorative sheet. This also ensures that the user has a high-quality impression of the absorbent material.

[0080] (Method 12) Based on the decorative sheet for absorbent products described in any of Methods 1 to 11, the decorative sheet for absorbent products is used in an independent package of the absorbent article or in a package of the absorbent article, the absorbent article having an absorbent core and a core sheet covering the surface of the absorbent core, the decorative sheet having mutually orthogonal longitudinal and transverse directions, the first elongation being the amount at which the adhesive layer breaks when the decorative sheet elongates in the direction with higher elongation strength in the longitudinal and transverse directions, and the second elongation being the amount at which the core sheet breaks when the core sheet elongates in the width direction of the absorbent article, wherein the first elongation is greater than the second elongation.

[0081] According to method 12, the elongation of the decorative sheet can be prevented from causing detachment due to the breakage of the adhesive layer, thus preventing a decrease in the quality of the decorative sheet. This also ensures the user's impression of the high quality of the absorbent material.

[0082] (Method 13) Based on the decorative sheet for absorbent products described in any of Methods 1 to 12, the decorative sheet has mutually orthogonal longitudinal and transverse directions, and has a first adhesive layer and a second adhesive layer. When the decorative sheet is elongated in the direction with higher elongation strength in the longitudinal and transverse directions, the elongation of the decorative sheet when the first adhesive layer breaks is different from the elongation of the decorative sheet when the second adhesive layer breaks.

[0083] According to method 13, when an external force is applied to the decorative piece, the three-dimensional appearance of the decorative layer above the first adhesive layer and the decorative layer above the second adhesive layer differs due to the difference in the elongation of the first adhesive layer and the second adhesive layer. Thus, the user can appreciate the differences between the multiple three-dimensional decorative layers.

[0084] (Method 14) Based on the decorative sheet for absorbent products described in any of Methods 1 to 13, the decorative sheet for absorbent products is used in an independent package of the absorbent article or in a package of the absorbent article, and has a welded portion that houses and seals the absorbent article inside, and the welded portion can be visually identified when the decorative layer is viewed from above.

[0085] According to method 14, the recessed weld area when viewed from above makes the decorative layer highly visible, allowing for easy three-dimensional visual identification of the decorative layer. This gives the user the impression that the absorbent material also deforms and fits in a three-dimensional way.

[0086] (Method 15) Based on the decorative sheet for absorbent products described in any of Methods 1 to 14, the absorbent article has an absorbent core comprising a highly absorbent polymer, and the minimum width of the decorative layer is smaller than the average particle size of the highly absorbent polymer.

[0087] According to method 15, users who visually recognize a narrow decorative layer can get the impression that the absorbent item is a delicate and flexible, soft product. Furthermore, users who visually recognize the decorative layer can easily identify the presence of a highly absorbent polymer, and are likely to have the impression that excrement is absorbed and retained by the highly absorbent polymer.

[0088] (Method 16) Based on the decorative sheet for absorbent products described in any of Methods 1 to 15, the decorative sheet for absorbent products is used in the packaging of the absorbent article and has a coding identification portion formed by a printed layer that does not overlap with the adhesive layer and the decorative layer.

[0089] According to method 16, the visual recognizability of the coded identification section is improved, and the reading device can accurately read the coded identification section.

[0090] (Method 17) Based on the decorative sheet for absorbent products described in any of Methods 1 to 16, the decorative sheet for absorbent products is used in the package of the absorbent article and has an article identification portion indicating the absorbent article, the article identification portion being formed by the adhesive layer and the decorative layer.

[0091] According to method 17, users who can visually recognize three-dimensional object markings can get the impression that the absorbent object is also three-dimensionally deformed and fits.

[0092] ===Implementation Methods===

[0093] The following describes, using sanitary napkins as an example of absorbent articles, an embodiment of a decorative sheet for absorbent products, which is used in any of the following: absorbent articles, individual packaging of absorbent articles, and encapsulation of absorbent articles. Absorbent articles are not limited to sanitary napkins, but also include disposable diapers (in the form of panties or belts), panty liners, shorts-type sanitary napkins, incontinence pads, urine-absorbing pads, breast pads, underarm pads, disposable diapers for pets, and other absorbent articles.

[0094] <<Basic Structure of Sanitary Napkins>>

[0095] Figure 1 This is a top view of the unfolded sanitary napkin 1, viewed from the skin side. Figure 2 This is a schematic cross-sectional view of sanitary napkin 1. The unfolded sanitary napkin 1 has mutually orthogonal length, width, and thickness directions. In the length direction, the side that rests against the wearer's lower abdomen is called the "front side," and the side that rests against the wearer's buttocks is called the "back side." Furthermore, in the thickness direction of the sanitary napkin 1, the side that rests against the wearer's skin is called the "skin side," and the opposite side is called the "non-skin side."

[0096] like Figure 2 As shown, the sanitary napkin 1 has a surface sheet 2, an intermediate sheet 3, an absorbent core 10, a bottom sheet 4, wings 5, and side sheets 6. Adjacent materials in the thickness direction are joined and fixed using an adhesive (not shown) such as a hot-melt adhesive. The surface sheet 2 and the intermediate sheet 3 are liquid-permeable sheet members, such as non-woven fabrics. The bottom sheet 4 is a liquid-impermeable sheet member, such as a resin film. The side sheets 6 are folded back from the end of the non-skin side of the absorbent core 10 in the width direction to the end of the surface sheet 2 in the width direction on the skin side. The bottom sheet 4 and the wings 5 ​​extend outward in the width direction relative to the side sheets 6, forming a wing 1w at the center of the sanitary napkin 1 in the length direction.

[0097] Alternatively, the surface sheet 2, which comes into contact with the wearer's skin, can also be made of cotton, a natural fiber (e.g., a sheet component made of 100% cotton, a blend of cotton and hot-air nonwoven fabric, etc.). This reduces irritation to the wearer's skin. In this case, as shown in the accompanying drawings described later, by providing patterns representing cotton on the sanitary napkin 1, the individual packaging 30, and the encapsulation 40, the use of cotton can be demonstrated to the user. However, the surface sheet 2 may not be made of cotton.

[0098] The absorbent 10 is a component that absorbs and retains excrement inside. Figure 2 The absorbent 10 has an absorbent core 11 and a core sheet 12 covering the absorbent core 11. The absorbent core 11 is formed into a predetermined shape from pulp fibers, cellulose fibers, or other absorbent fibers that are liquid absorbent fibers. The core sheet 12 is a liquid-permeable sheet component, such as cotton paper. However, the structure of the absorbent 10 is not limited to the above structure. For example, it may be a SAP sheet formed by attaching a SAP layer to a hydrophilic sheet, or an air-laid sheet formed by forming liquid absorbent fibers into a sheet shape using an air-laid method.

[0099] The basic structure of sanitary napkin 1 has been explained above, but the structure of sanitary napkins is not limited to the above structure. For example, it can also be a sanitary napkin without wings 1w, etc.

[0100] <<Individually packaged sanitary napkins 30>>

[0101] Figure 3 This is a top view of the individually packaged sanitary napkin 30 in its unfolded state, viewed from the non-skin side. Figure 4 This is a top view obtained by observing the individually packaged sanitary napkin 30 unfolded from the skin side. Figure 5 This is a top view of the individual packaging unit 30 of the sanitary napkin.

[0102] The individual packaging unit 30 (hereinafter also referred to as "individual packaging unit 30") of the sanitary napkin 1 is formed by independently packaging the sanitary napkin 1 with a packaging sheet 31, and includes the sanitary napkin 1, the packaging sheet 31, the fixing strap 32, and the release tabs 33 and 34. The packaging sheet 31 is a rectangular sheet component, and examples include resin film, non-woven fabric, paper, and sheets formed by laminating the above materials. The length direction of the packaging sheet 31 corresponds to the length direction of the sanitary napkin 1, and the width direction of the packaging sheet 31, which is the short side direction, corresponds to the width direction of the sanitary napkin 1. The fixing strap 32 is provided at the end of the packaging sheet 31 in the length direction.

[0103] like Figure 3 As shown, multiple adhesive portions 8 and 9 coated with adhesive or the like are provided on the non-skin side of the sanitary napkin 1 (i.e., the non-skin side of the backing 4). Multiple rectangular adhesive portions 8 extending along the length direction are arranged in the width direction of the main body of the sanitary napkin 1. These adhesive portions 8 of the main body are used to fix the main body of the sanitary napkin 1 to the inner side of the wearer's underwear. Additionally, multiple rectangular adhesive portions 9 extending along the length direction are also arranged in the width direction of the wing portion 1w. When the sanitary napkin 1 is worn, the wing portion 1w is bent and fixed to the outer side of the underwear using the adhesive portions 9. Furthermore, the shape, number, and arrangement of the adhesive portions 8 and 9 are not limited to... Figure 3 The example is shown.

[0104] In the individual packaging 30, the non-skin side of the sanitary napkin 1 is secured to the packaging sheet 31 via a release liner 33. The release liner 33 covers the adhesive portion 8 of the main body of the sanitary napkin 1, allowing the sanitary napkin 1 to be easily peeled off when the individual packaging 30 is opened. Additionally, as... Figure 4 As shown, the wing 1w is folded inward in the width direction on the skin side of the sanitary napkin 1. The adhesive portion 9 of the wing 1w is covered by the release tab 34. In addition, the sanitary napkin 1 can be directly and peelably fixed to the packaging sheet 31 without being secured to the packaging sheet 31 through the release tab 33.

[0105] Packaging sheet 31 and sanitary napkin 1 Figure 4 The state begins with folding at two folds F1 and F2 along the width direction. The two ends of the packaging sheet 31, folded together with the sanitary napkin 1, are joined in the width direction, as shown below. Figure 5 The joint 35 is formed as shown. Examples of joint methods at the joint 35 include known methods such as heat sealing, ultrasonic sealing, adhesives, and combinations thereof. Additionally, a retaining strap 32 is provided across the opening end of the packaging sheet 31. The user holds the retaining strap 32 and unfolds the folds F1 and F2 to open the individual packaging unit 30.

[0106] The above describes the individual packaging 30 for sanitary napkins, but the structure of the individual packaging 30 is not limited to the above structure. For example, the number of folds F1 and F2 on the packaging sheet 31 is not limited to two; it can be one or more. Furthermore, the packaging sheet 31 and the sanitary napkin 1 can be folded not only at the folds F1 and F2 along the width direction but also at the folds along the length direction. Alternatively, the packaging sheet 31 and the sanitary napkin 1 can be folded independently. That is, the packaging sheet 31 can also be folded to enclose a pre-folded sanitary napkin 1.

[0107] <<Sanitary Napkin Packaging Body 40>>

[0108] Figure 6A This is a 3D view of the packaging body 40 of a sanitary napkin. Figure 6B This diagram shows the state of the storage body 41 after it has been opened. The sanitary napkin packaging body 40 (hereinafter also referred to as "packaging body 40") has multiple individual packaging bodies 30 for sanitary napkins and a storage body 41 for storing the aforementioned multiple individual packaging bodies 30 for sanitary napkins. In addition, the storage body is not limited to individual packaging bodies for storing absorbent items, but can also directly store one or more absorbent items that are not individually packaged, such as disposable diapers.

[0109] Figure 6AThe illustrated storage body 41 has a vertical, horizontal, and front-back orientation, and includes a rectangular main body 42 and a sealing member 43. The sealing member 43 is located on the back side 41B of the encapsulation body 40 (storage body 41). Specifically, the sealing member 43 is located on the upper rear side of the storage body 41. A gripping portion 431 is provided at the center of the sealing member 43 in the horizontal direction. Furthermore, a cutting line 44 (e.g., an easy-tear line) is formed on the portion of the main body 42 covered by the sealing member 43. The user pinches the gripping portion 431 and pulls the sealing member 43, thereby... Figure 6B As shown, a portion of the main body 42 is bonded to the sealing member 43 along the cut line 44 to form an opening 45, which serves as the dispensing port for the sanitary napkin 1.

[0110] also, Figure 6A The shape and structure of the storage body 41 shown are just one example and are not limited thereto. For example, it can also be a cuboid-shaped storage body without a sealing member 43, a stand-up pouch, a flat bag, or other storage bodies.

[0111] <<Decorative Sheets for Absorbent Products 50>>

[0112] Figure 7 This is the front view of package 40. Figure 8 This is the rear view of package 40. Figure 9 , Figure 10A as well as Figure 10B This is a diagram illustrating decorative piece 50.

[0113] In this embodiment, the housing 41 (specifically, the main body 42) of the sanitary napkin packaging 40 uses a decorative sheet 50 for absorbent products that has been decorated. For example... Figure 9 As shown, the decorative sheet 50 includes: a sheet 51; an adhesive layer 52 disposed on the surface of the sheet 51; and a decorative layer 53 disposed on the adhesive layer 52 with a maximum thickness of 10 μm or less. Examples of decorative layer 53 include metal foil, holographic foil, pigment foil, etc. (details will be described later).

[0114] The decorative layer 53 is provided in a region that is visually recognizable to the user, protruding from the surface of the sheet 51 in the thickness direction of the sheet 51. That is, the decorative layer 53 protrudes relative to the surrounding surface of the sheet 51 by means of the adhesive layer 52 formed in a raised manner on the surface of the sheet 51. Therefore, the decoration presented by the decorative layer 53 is visually recognized by the user as a three-dimensional decoration. In the following description, the portion where the decorative layer 53 overlaps with the adhesive layer 52 is also referred to as the "three-dimensional decorative portion 54". Figure 9 , Figure 10A As 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 decorative part 54.

[0115] In this embodiment, a three-dimensional decorative portion 54 (adhesive layer 52 + decorative layer 53) is provided on the outer surface of the housing 41 of the encapsulation body 40, and the three-dimensional decorative portion 54 protrudes outward from the housing 41. The three-dimensional decorative portion 54 displays a pattern d1 of multiple curves. Figure 7 ), or show the outline of the flower, the pattern of the petals d2 ( Figure 7 ), or display the pattern d3 of sanitary napkin 1 ( Figure 7 ).

[0116] Thus, even when decorating the sheet 51 with a relatively thin decorative layer 53 (metal foil, holographic foil) with a maximum thickness of less than 10 μm, a three-dimensional decoration (three-dimensional decorative part 54) can be formed by setting the decorative layer 53 on top of the adhesive layer 52. Users who visually recognize the three-dimensional decorative part 54 provided on the storage body 41 of the packaging body 40 are more likely to perceive it as a three-dimensional product. Therefore, users are more likely to perceive the sanitary napkin 1 stored in the storage body 41 as a product that is three-dimensionally deformed and conforms to the body, thus preventing leakage. The three-dimensional decorative part 54 is visually recognized by users in stores where the packaging body 40 is displayed, restrooms where the packaging body 40 is stored, etc. Users who visually recognize the three-dimensional decorative part 54 before using the sanitary napkin 1 can use the sanitary napkin 1 with peace of mind.

[0117] The types of decorations displayed by the three-dimensional decoration section 54 are not particularly limited, and can include text, numbers, symbols (such as musical notes, signs, etc.), graphics (such as circles, polygons, hearts, stars, etc.), patterns (such as paintings representing the shape of objects, animals, plants, people, etc.), geometric patterns, colors (parts with a predetermined color difference relative to the color of sheet 51), or decorations formed by combining the above decorations. Figure 7 The three-dimensional decorative part 54 shown is an example. The shape, number, size and arrangement of the three-dimensional decorative part 54 are not particularly limited.

[0118] The adhesive layer 52 is a layer formed from a raw material that remains raised on the surface of the sheet 51 and has adhesive properties that bond the sheet 51 and the decorative layer 53. Examples of raw materials for forming the adhesive layer 52 include colorless, transparent, UV-curable adhesives. However, it is not limited to this; for example, other UV-curable adhesives may also be used. The viscosity of the adhesive layer 52 may be adjusted so that it does not easily penetrate the sheet 51 and thus remains raised on the sheet 51. Furthermore, examples of the sheet 51 constituting the decorative sheet 50 include resin films, non-woven fabrics, paper, and sheets formed by laminating the above materials.

[0119] The thickness of decorative layer 53 is its length in a direction orthogonal to the surface of decorative layer 53 (e.g., Figure 9Regarding the maximum thickness (less than 10 μm) of the decorative layer 53 (in this case, the housing 41), it can be confirmed using known methods. For example, the portion of the decorative piece 50 (in this case, the housing 41) where the three-dimensional decorative portion 54 is formed is identified, and multiple samples are formed by cutting this portion at any number of points. Then, the cut surface of each sample is magnified and photographed using an optical microscope (e.g., a VHX-900F manufactured by Keyence Corporation). For each photographed cut surface, the maximum thickness of the decorative layer 53 is measured. The maximum value of the maximum thickness of each sample is set as the maximum thickness of the decorative layer 53, and it is confirmed to be less than 10 μm.

[0120] Furthermore, the three-dimensional decorative part 54 can be provided at any position on the outer side of the receiving body 41 of the encapsulation body 40. Preferably, as shown below... Figure 7 As shown, it is preferable that the three-dimensional decorative part 54 is provided on the front surface 41F of the storage body 41 of the encapsulation body 40. In this way, users can easily visually identify the three-dimensional decorative part 54 in stores and the like. In addition, the front surface of the storage body 41 refers to the largest surface among the multiple surfaces of the storage body 41, the surface that prominently displays the sales name (brand name), the number of items stored, etc.

[0121] Furthermore, preferably, in the case of the package 40 having a sealing member 43, the sealing member 43 is provided on the back side 41B of the storage body 41 of the package 40, and the three-dimensional decorative part 54 is not provided on the back side 41B of the storage body 41. When the sealing member 43 is opened, the user holds the back side 41B of the storage body 41, or the pulling force of the sealing member 43 is applied to the back side 41B of the storage body 41. Therefore, by not providing the three-dimensional decorative part 54 on the back side 41B (opening cover) of the storage body 41, it is possible to prevent the three-dimensional decorative part 54 from falling off and adhering to the user or the sanitary napkin 1 when opening.

[0122] Alternatively, the three-dimensional decorative part 54 may not be provided on the packaging body 40, but rather on the sanitary napkin 1 or the individual packaging body 30. It is also possible that the three-dimensional decorative part 54 is provided not only on the packaging body 40, but also on the sanitary napkin 1 or the individual packaging body 30. In other words, the decorative piece 54 can be used on at least one of the sanitary napkin 1, the individual packaging body 30, and the packaging body 40.

[0123] In the case of independent packaging 30, decorative sheets 50 can be used on packaging sheets 31, peeling sheets 33, 34, etc. Specifically, decorative sheets 50 can be used on packaging sheets 31, peeling sheets 33, 34, etc. Figure 5 The pattern d4 on the outer side of the packaging sheet 31 shown. Figure 4 The pattern d5 of the peeling strip 34 shown is set as a three-dimensional decorative part 54. In this way, the user can visually identify the three-dimensional decorative part 54 when taking out the individual package 30 from the package 40 or when opening the individual package 30.

[0124] In the case of sanitary napkin 1, decorative pieces 50 can be used on the base sheet 4, wings 5, etc. Specifically, decorative pieces 50 can be used on the base sheet 4, wings 5, etc. Figure 3 The pattern d6 on the non-skin side of the film 4 shown is designated as a three-dimensional decorative part 54. This allows the user to visually identify the three-dimensional decorative part 54 when removing the sanitary napkin from the individual packaging 30 and wearing it under their underwear.

[0125] In the above situation, the user can visually recognize the three-dimensional decorative part 54 even before using the sanitary napkin 1. Therefore, the user is likely to have the impression that the sanitary napkin 1 is also three-dimensionally deformed and fits the body, and can use it with peace of mind.

[0126] Furthermore, it is preferable that the decorative layer 53 is formed from any one of metal foil, holographic foil, or pigment foil. This enhances the aesthetic appeal of the three-dimensional decorative section 54. Specifically, the three-dimensional decorative section 54 formed from metal foil or holographic foil, displaying a metallic sheen such as gold or silver, is easily eye-catching. As a result, users visually recognizing the storage body 41 of the package 40 are more likely to be drawn to the shimmering three-dimensional decorative section 54, and are more likely to have a three-dimensional impression of the sanitary napkin 1. In addition, the metallic sheen of the three-dimensional decorative section 54 also easily gives users the impression of a high-end product. Therefore, users are more likely to have the impression that the sanitary napkin 1 stored in the storage body 41 is a high-quality product (e.g., leak-proof, comfortable to wear), and can use the sanitary napkin 1 with peace of mind. On the other hand, the three-dimensional decorative section 54 formed from pigment foil has a matte finish, which gives users the impression of a product with a stable sense of security. In addition, because it lacks a metallic sheen, users are more likely to feel reassured that no metal or other foreign objects have been mixed into the sanitary napkins 1 that have been stored.

[0127] Examples of metal foils include metal foils obtained by striking metal to extend it thinly and flat, thin and flat sheets containing metal (coated films of metal powder pigments, metal vapor-deposited films), and sheets obtained by laminating resin layers on the aforementioned components. Examples of metals contained in metal foils include gold, silver, copper, tin, brass, and aluminum.

[0128] Holographic foil is a thin, flat sheet that reflects incident light in colors using a prism effect. By creating fine embossed patterns on its surface, people who see the reflected light can visually identify specific patterns.

[0129] As a pigment foil, an example is a sheet formed by laminating a pigment film onto a synthetic resin layer. The pigment color can be red, blue, yellow, black, white, etc., without particular limitation. Furthermore, the decorative layer 53 can also be a foil material other than metal foil, holographic foil, or pigment foil.

[0130] Furthermore, it is preferable that the maximum thickness of the adhesive layer 52 is greater than the maximum thickness of the decorative layer 53. For example, it is preferable that the thickness of the adhesive layer 52 is in the range of about 10 to 80 μm and the thickness of the decorative layer 53 is in the range of about 4 to 6 μm. This allows the thinner decorative layer 53 to protrude further from the surface of the surrounding sheet 51. Therefore, the three-dimensional decorative portion 54 becomes more three-dimensional, and the user can easily identify the presence of a three-dimensional decoration. In addition, as mentioned above, the thickness of the decorative layer 53 (e.g., Figure 9 53t) is set as the length in a direction orthogonal to the surface of the decorative layer 53. The thickness of the adhesive layer 52 (e.g.) Figure 9 The thickness t2) is set as the length in the thickness direction of sheet 51.

[0131] Furthermore, the adhesive layer 52, which is a UV-curable adhesive, is irradiated with ultraviolet light, and the decorative layer 53 is bonded to the adhesive layer 52 by utilizing the adhesive properties of the partially cured adhesive layer 52. An example of the cross-sectional shape of the three-dimensional decorative part 54 can be shown below. Figure 9 , Figure 10A as well as Figure 10B The shape shown. The three-dimensional decorative portion 54 illustrated has a length in a predetermined direction. Preferably, as shown, the three-dimensional decorative portion 54 (the portion where the decorative layer 53 overlaps with the adhesive layer 52) has portions with different thicknesses. For example, in Figure 9 In the three-dimensional decorative part 54, the central part in the predetermined direction is recessed and thinned. Figure 10A In the three-dimensional decorative part 54, the thickness of the end in the predetermined direction is thinner than the thickness of the adjacent part.

[0132] In this way, the height of the three-dimensional decorative part 54 varies locally, making it easier to visually identify the three-dimensional decorative part 54. Therefore, users are more likely to perceive the three-dimensional decorative part 54 as giving the impression that the sanitary napkin 1 also deforms and conforms to the body in a three-dimensional manner. Furthermore, the visual appearance of the three-dimensional decorative part 54 changes depending on the angle. Therefore, users are more likely to perceive that the sanitary napkin 1 does not deform uniformly but rather deforms along the body and follows body movements.

[0133] In addition, preferably, such as Figure 9 , Figure 10A as well as Figure 10B As shown, in the three-dimensional decorative part 54, the thickness of the end portion 54E in the predetermined direction is smaller than the thickness of the portion 54I adjacent to the end portion 54E on the inner side in the predetermined direction.

[0134] In this way, the three-dimensional decorative part 54 is raised from the end 54E toward the inner side 54I in the predetermined direction and is visually recognizable, making it easier to visually recognize the three-dimensional decorative part 54. Therefore, users who visually recognize the three-dimensional decorative part 54 are likely to have the impression that the sanitary napkin 1 is also three-dimensionally deformed and fits the body.

[0135] Alternatively, it could be, such as Figure 9 and Figure 10B As shown, in the three-dimensional decorative section 54, the central portion in a predetermined direction (towards the sheet 51 in the thickness direction) is recessed. This gives the surface of the three-dimensional decorative section 54 a raised / concave shape, making it easier to visually identify the three-dimensional decorative section 54. Consequently, users are more likely to perceive the three-dimensional decorative section 54 as a three-dimensional deformation that conforms to the sanitary napkin 1. Furthermore, users are more likely to perceive that the sanitary napkin 1 does not deform uniformly but rather deforms along the body and follows body movements.

[0136] However, it is not limited to the above situations; it can also be, for example... Figure 10A As shown, the thickness of the three-dimensional decorative part 54, except for the end in the predetermined direction, is constant. Alternatively, the central part of the three-dimensional decorative part 54 in the predetermined direction may be convex and have a larger thickness.

[0137] Alternatively, it could be, such as Figure 9 and Figure 10A As shown, the adhesive layer 52 has a protrusion 52E extending in a predetermined direction relative to the decorative layer 53. The adhesive layer 52 may extend to both sides in the predetermined direction as shown, or it may extend only to one side in the predetermined direction. Furthermore, it is preferable that the maximum thickness t1 of the protrusion 52E of the adhesive layer 52 is smaller than the maximum thickness t2 of the portion of the adhesive layer 52 that overlaps with the decorative layer 53 (t1 < t2).

[0138] The thickness of the protrusion 52E, which is a separate adhesive layer 52, is relatively small, thus preventing the visual visibility of the decorative layer 53 from being obstructed by the protrusion 52E. Furthermore, when an external force is applied to the decorative sheet 50 (in this case, the housing 41), the force is easily applied to the protrusion 52E, which is the end of the adhesive layer 52. However, the adhesive layer 52 is formed from an adhesive material and is elastic, so it easily deforms along with the sheet 51. Therefore, it is possible to suppress the adhesive layer 52 from peeling off from the sheet 51. In particular, if the thickness of the protrusion 52E is small, the protrusion 52 is more likely to deform along with the sheet 51. Additionally, the decorative layer 53 is not located at the end where force is easily applied, thus suppressing the peeling of the adhesive layer 52 and the decorative layer 53, and the cracking of the decorative layer 53. The user, visually recognizing the three-dimensional decorative part 54 that maintains quality, is likely to have the impression that the sanitary napkin 1 is also a high-quality product.

[0139] In addition, it is preferable that the length L1 of the protrusion 52E in the predetermined direction is shorter than the length L2 of the portion of the adhesive layer 52 that overlaps with the decorative layer 53 in the predetermined direction (L1 < L2).

[0140] As mentioned above, by providing the protrusion 52E, the peeling of the adhesive layer 52 and the decorative layer 53, as well as the cracking of the decorative layer 53, can be suppressed. However, by not unnecessarily lengthening the protrusion 52E, the reduction of aesthetic appeal (such as metallic luster) caused by the decorative layer 53 can be prevented.

[0141] In addition, it is not limited to the above situations; it can also be, for example... Figure 10B As shown, the adhesive layer 52 does not have a protrusion 52E. That is, the entire surface area of ​​the adhesive layer 52 may be covered by the decorative layer 53.

[0142] Thus far, the relationship between the thickness and length of each part has been explained, and the comparison of the thickness and length described above can be performed using known methods. For example, the comparison can be made by visually observing the object parts, or by comparing images taken using an optical microscope after magnifying the object parts. Alternatively, the comparison can be made using cross-sectional images obtained by cutting the object parts. The comparison of the thickness and length of each part described below can also be performed using the same methods.

[0143] In addition, such as Figure 1 and Figure 2 As shown, the sanitary napkin 1 has a compression section 20 formed by compressing the surface sheet 2 along its thickness direction from the skin-side surface. Therefore, the user, seeing the skin-side surface of the sanitary napkin 1, can visually identify the compression section 20. In the compression section 20, the sanitary napkin 1 is thinner than its surroundings, and the density of the material (fibers) constituting the sanitary napkin 1 is higher. Figure 2 In the illustrated compression section 20, the surface sheet 2, the middle sheet 3, and the absorbent body 10 (partially or entirely) are compressed along the thickness direction. However, the compression section 20 may compress the sanitary napkin 1 only from the skin side of the surface sheet 2 along the thickness direction, for example, without reaching the absorbent body 10.

[0144] Figure 1 The illustrated sanitary napkin 1 has a linear compression section 21 formed by a linear arrangement of dot-shaped compression sections and a plurality of discretely arranged dot-shaped compression sections 22. However, the number, shape, and arrangement of the compression sections 20 are not particularly limited. Alternatively, the compression section 20 may also be a compression section formed by continuously compressing the linear compression sections in a groove shape.

[0145] Furthermore, preferably, the minimum width of the decorative layer 53 (i.e., the minimum width of the three-dimensional decorative portion 54) of the decorative piece 50 (here, the storage body 41) is greater than the minimum width W20 of the compressed portion 20. Figure 2 Small. Users who see the narrow decorative layer 53 are more likely to perceive it as a delicate (refined) product. Therefore, users are more likely to perceive the sanitary napkin 1 as a product with a flexible and soft feel against the skin, allowing them to use it with peace of mind.

[0146] Furthermore, users who focus on the three-dimensionally protruding decorative layer 53 can easily identify the three-dimensionally recessed compression portion 20 when viewing the skin side of the sanitary napkin 1. In particular, users who visually recognize the narrow decorative layer 53 can easily identify the sufficiently wide compression portion 20. Since the sanitary napkin 1 is thinner at the compression portion 20, users are more likely to perceive that the sanitary napkin 1 deforms three-dimensionally along the body starting from the compression portion 20.

[0147] Furthermore, regarding the width W53 of the decorative layer 53, for example, in... Figure 7 When the decorative layer 53 (three-dimensional decorative part 54) extends linearly as shown in the curve pattern d1, and the decorative layer 53 forms the outline of a pattern (e.g., a sanitary napkin), the direction orthogonal to the direction in which the decorative layer 53 extends is defined as the width direction. Furthermore, when the pattern represented by the decorative layer 53 has linear portions (e.g., the stem portion of a cotton swab), the direction orthogonal to the direction in which those linear portions extend is defined as the width direction. Additionally, when the pattern represented by the decorative layer 53 (e.g., a heart) does not have linear portions, the direction of the shorter side of the rectangle circumscribed by the three-dimensional decorative part 54 in top view is defined as the width direction. The length of the decorative layer 53 in the aforementioned width direction is defined as the width. Furthermore, when the decorative layer 53 (three-dimensional decorative part 54) is text or numbers, the thickness of the lines forming those texts is defined as the width of the decorative layer 53. Additionally, the predetermined direction in this specification can be either the width direction along the width of the decorative layer 53 or a direction intersecting the width direction. The same applies to the width W20 of the compression section 20. The length of the direction orthogonal to the direction of extension of the linear compression section 21 is set as the width, and the length of the short side of the rectangular shape circumscribed by the point compression section 22 when viewed from above is set as the width.

[0148] in addition, Figure 2 The illustrated sanitary napkin 1 has an absorbent core 11 comprising a superabsorbent polymer 111. That is, the absorbent core 11 is formed by adding the superabsorbent polymer 111 to liquid-absorbent fibers such as pulp fibers and shaping it into a predetermined shape. In this case, it is preferable that the minimum width (W53) of the decorative layer 53 is smaller than the average particle size of the superabsorbent polymer 111 before absorbing liquid.

[0149] Users who see the narrow decorative layer 53 are more likely to perceive it as a refined product, and the sanitary napkin 1 also gives the impression of being flexible, deformable, and soft to the touch. On the other hand, users holding the sanitary napkin 1 can feel the presence and size of the highly absorbent polymer 111 through the surface sheet 2 and the backing sheet 4. As a result, users can get the impression that the highly absorbent polymer 111 reliably absorbs excrement and is less prone to leakage.

[0150] The average particle size of the superabsorbent polymer 111 can be determined by known methods. Preferably, the following measurement can be performed on multiple sanitary napkins 1, and the average particle size obtained in each of the multiple measurements (e.g., N=5 times) can be compared.

[0151] (1) In a constant temperature and humidity room with a temperature of 20±5℃ and a humidity of 65±5%RH, prepare a digital microscope (trade name: VHX-1000, zoom lens: ×20~×200 or equivalent lens) and its accompanying software manufactured by Keyence.

[0152] (2) Multiple highly absorbent polymers 111 taken from the sanitary napkin 1 are left to stand in the above-mentioned constant temperature and humidity room for 24 hours.

[0153] (3) The high-absorption polymer 111 was photographed using the digital microscope described above.

[0154] (4) The particle size of each highly absorbent polymer 111 refers to the circular equivalent diameter calculated based on the projected area of ​​the projected image of each highly absorbent polymer 111. Specifically, the projected area A of each highly absorbent polymer 111 is measured using the accompanying software, and the circular equivalent diameter CD (diameter) of each highly absorbent polymer 111 is calculated (CD = 2 × (A / π)). 1 / 2 ).

[0155] (5) The average particle size of the highly absorbent polymer 111 refers to the median particle size in the particle size distribution (based on the number of particles). Specifically, the particle size distribution (based on the number of particles) of the circular equivalent diameter CD of 1000 highly absorbent polymers is generated using the accompanying software, and the median particle size is determined based on the particle size distribution (based on the number of particles) and set as the average particle size.

[0156] However, the amount of excretion from the wearer of sanitary napkin 1 is less than that from the wearer of disposable diapers or absorbent pads. Therefore, the absorbent core 11 may not contain the superabsorbent polymer 111.

[0157] Furthermore, it is preferable that, when the sanitary napkin 1 has a compression portion 20, the maximum thickness t3 of the three-dimensional decorative portion 54, which is the area where the decorative layer 53 overlaps with the adhesive layer 52, is [not specified]. Figure 9 The minimum depth d of the compression section 20 is greater than that of the compression section 20. Figure 2 ) small (t3 < d).

[0158] By moderately suppressing the maximum thickness t3 of the three-dimensional decorative part 54 to an excessively thick level, it is possible to prevent the three-dimensional decorative part 54 from getting stuck. This also prevents the three-dimensional decorative part 54 from peeling off from the sheet 51. Thus, users who visually recognize the quality of the three-dimensional decorative part 54 are more likely to have the impression that the sanitary napkin 1 is also a high-quality product. On the other hand, users can easily recognize the compression part 20, which has sufficient depth. Therefore, users are more likely to receive the impression that the sanitary napkin 1 deforms three-dimensionally along the body starting from the compression part 20. In fact, when compressed to the relatively stiff absorbent body 10, the sanitary napkin 1 is easy to bend starting from the compression part 20 and easily deforms three-dimensionally.

[0159] Alternatively, the decorative sheet 50 may not only have a three-dimensional decorative portion 54, but also a flat printed layer 60 provided on the surface of the sheet 51, i.e., a conventional printed layer 60 formed by ink printing. In this case, the three-dimensional decorative portion 54 (adhesive layer 52 and decorative layer 53) may be provided on a portion of the printed layer 60. For example, in Figure 7 In this process, a three-dimensional decorative portion 54, also a curved pattern d1, is superimposed on the printed layer 60, which is a plurality of curved patterns p1. In addition, a three-dimensional decorative portion 54 with a petal pattern d2 is superimposed on the printed layer 60, which represents the color p2 of the flower.

[0160] In this way, the raised details of the decoration displayed by the printed layer 60 are visually recognizable, allowing the user to further appreciate the decoration. Furthermore, when the decoration is a three-dimensional decorative section 54, it is more noticeable than when all the decoration is three-dimensional decorative sections 54. Therefore, the user is more likely to focus on the three-dimensional decorative section 54, giving the sanitary napkin 1 a three-dimensional impression. Additionally, the printed layer 60 is covered by the three-dimensional decorative section 54, making it less prone to peeling. Conversely, even if the three-dimensional decorative section 54 is peeled off from the sheet 51, the printed layer 60 remains visually recognizable. This helps to prevent a decrease in the appearance quality of the decorative sheet 50 and ensures the user's impression of the high quality of the sanitary napkin 1.

[0161] like Figure 2 As shown, the sanitary napkin 1 has an absorbent core 11 and a core sheet 12 covering the surface of the absorbent core 11. In this case, it is preferable that the elongation strength of the portion of the adhesive layer 52 that overlaps with the decorative layer 53 is higher than the elongation strength of the core sheet 12 in the width direction of the sanitary napkin 1.

[0162] Here, in the case where the decorative piece 50 is used in the housing 41 of the encapsulation body 40, Figure 6A and Figure 6BThe vertical and horizontal directions (or vertical and front-back directions) of the storage body 41 shown correspond orthogonally to the longitudinal and lateral directions of the decorative piece 50. Furthermore, when the decorative piece 50 is used as the packaging piece 31 of the independent packaging body 30, Figure 3 The length and width directions shown correspond to the longitudinal and transverse directions of the decorative piece 50. The decorative piece 50 has a direction with higher elongation strength in the longitudinal and transverse directions.

[0163] Furthermore, the first elongation (mm) is defined as the amount of elongation of the decorative piece 50 when the adhesive layer 52 of the three-dimensional decorative part 54 breaks, provided that the decorative piece 50 elongates in the direction with higher elongation strength in both the longitudinal and transverse directions. The second elongation (mm) is defined as the amount of elongation of the core pack 12 when it breaks, provided that the core pack 12 elongates in the width direction of the sanitary napkin 1. Preferably, the first elongation is greater than the second elongation. Furthermore, the term "when the adhesive layer 52 breaks" refers to either the beginning of cracking in the adhesive layer 52 or the beginning of peeling from the decorative piece 50. Similarly, the term "when the core pack 12 breaks" refers to the beginning of cracking or breakage in the core pack 12.

[0164] The core sheet 12, which constitutes the sanitary napkin 1, is formed with a strength that prevents it from breaking during wear. Preferably, the adhesive layer 52 of the three-dimensional decorative portion 54 has a stronger resistance to elongation than the core sheet 12, making it less prone to breakage. This prevents the adhesive layer 52 from breaking and detaching from the sheet 51, even if the decorative piece 50 (here, the housing 41 of the encapsulation 40) elongates during various events such as manufacturing, distribution, and user use. This maintains the aesthetic quality of the three-dimensional decorative portion 54, giving the user the impression of a high-quality product and the sanitary napkin 1 as having high-quality performance (leakage resistance, comfortable wear, etc.).

[0165] The comparison of elongation at fracture can be performed using a tensile testing machine (e.g., Instron Model 5965 or an equivalent instrument) and by known methods.

[0166] First, determine the direction with higher elongation strength in the longitudinal and transverse directions of the decorative piece 50. To do this, cut the decorative piece 50 to a predetermined size to form a sample. Prepare samples with the longitudinal direction of the decorative piece 50 (e.g., the vertical direction of the package 40) and the transverse direction of the decorative piece 50 (e.g., the horizontal direction of the package 40) as the measurement direction. The samples are designed as rectangles with the elongation measurement direction as their length (e.g., 100mm length × 25mm width in the measurement direction). Then, using the chucks of a tensile testing machine, clamp the two ends of the sample (50mm distance between chucks) and compare the tensile strength (N) when the sample is elongated to a predetermined length at a tensile speed of 100mm / min. The direction in which the sample with higher tensile strength elongates is the direction with higher elongation strength.

[0167] Next, the decorative sheet 50 is cut to a predetermined size to form a sample containing the three-dimensional decorative part 54. The sample is sized as a rectangle with the direction of higher elongation strength in the longitudinal and transverse directions of the decorative sheet 50 as the length direction (measurement direction) (e.g., 100mm length × 25mm width in the measurement direction). Additionally, the core sheet 12 is removed from the sanitary napkin 1 by separating the materials using a cold spray or similar method. The core sheet 12 is also cut to a predetermined size (a rectangle with the elongation measurement direction (width direction of the sanitary napkin 1) as the length direction, 100mm length × 25mm width) to form a sample. Then, each sample is held at both ends by the chucks of a tensile testing machine (chuck distance 50mm), and stretched at a tensile speed of 100mm / min while observing the sample. The elongation of the sample when the adhesive layer 52 of the three-dimensional decorative part 54 breaks (first elongation) and the elongation of the sample when the core sheet 12 breaks (second elongation) are calculated and compared.

[0168] Furthermore, it is preferable that the decorative piece 50 has multiple three-dimensional decorative portions 54 with different elongation amounts upon fracture of the adhesive layer 52. That is, it is preferable that the decorative piece 50 has a first adhesive layer 52 and a second adhesive layer 52 as follows: When the decorative piece 50 is elongated along the direction with higher elongation strength in the longitudinal and transverse directions of the decorative piece 50, it is preferable that the elongation amount of the decorative piece 50 upon fracture of the first adhesive layer 52 is different from the elongation amount of the decorative piece 50 upon fracture of the second adhesive layer 52.

[0169] For example, forming Figure 7The decorative piece 50 of the encapsulation body 40 has an adhesive layer 52 (first adhesive layer) forming a curved pattern d1 and an adhesive layer 52 (second adhesive layer) forming a pattern of a sanitary napkin. The width of the adhesive layer 52 forming the curved pattern d1 is different from the width of the adhesive layer 52 forming the pattern of the sanitary napkin. Therefore, the amount of elongation (ease of elongation) upon breakage can be different for the adhesive layer 52 forming the curved pattern d1 and the adhesive layer 52 forming the pattern of the sanitary napkin. In addition, although not shown, by making the thickness of the adhesive layer 52 in one three-dimensional decorative part 54 different from that in another three-dimensional decorative part 54, or by making the planar shape of the adhesive layer 52 (e.g., the presence or absence of curved and straight portions) different, the amount of elongation (ease of elongation) upon breakage can be different.

[0170] The adhesive layer 52 with a large elongation upon fracture is the part that is easy to stretch and not easy to break. Conversely, the part with a small elongation upon fracture is the part of the adhesive layer 52 that is difficult to stretch. In this way, the adhesive layer 52 has parts that are easy to stretch and parts that are difficult to stretch, so that when an external force is applied to the decorative piece 50, the visual appearance changes according to the difference in elongation of the multiple three-dimensional decorative parts 54. As a result, the user is more likely to focus on the three-dimensional decorative parts 54.

[0171] Furthermore, the method for determining the elongation at fracture of the first adhesive layer 52 and the second adhesive layer 52 can be performed using the same method as described above using a tensile testing machine. In short, a sample containing the first adhesive layer 52 (three-dimensional decorative part 54) and a sample containing the second adhesive layer 52 (three-dimensional decorative part 54) are formed, each sample is elongated, and the elongation at fracture of each sample is calculated and compared.

[0172] In addition, such as Figure 6A As shown, the package 40 (storage body 41) is mostly provided with an coded identification section 61 (barcode, QR code (registered trademark) etc.) that can be read by an optical reading device. When the decorative sheet 50 is used in the package 40 and has the coded identification section 61, it is preferable that the coded identification section 61 is formed of a printed layer 60 that does not overlap with the adhesive layer 52 and the decorative layer 53.

[0173] Compared to the three-dimensional decorative section 54, the outline of the decoration formed by the ink-based printing layer 60 is clearer. Therefore, since the coded marking section 61 is formed by the flat printing layer 60 instead of the three-dimensional decorative section 54, visual recognizability is improved, and it can be accurately read by the reading device.

[0174] In addition, such as Figure 6AAs shown, in the package 40, information related to the sanitary napkin 1 is centrally recorded on a table or similar surface. This information labeling group 63 (e.g., sales name, constituent materials, usage instructions, manufacturer, etc.) is indicated by relatively small text. Therefore, the information labeling group 63 is not formed by a three-dimensional decorative section 54, but by a flat ink-based printing layer 60, making it easy for the user to read the information labeling group 63.

[0175] In addition, such as Figure 7 As shown, the packaging body 40 (storage body 41) is mostly provided with an item identification portion 62 indicating the sanitary napkin 1 that is stored. When the decorative sheet 50 is used in the packaging body 40 and has an item identification portion 62, it is preferable that the item identification portion 62 is formed by a three-dimensional decorative portion 54 (adhesive layer 52 and decorative layer 53).

[0176] In this way, the user sees the three-dimensionally marked item label 62, thus easily perceiving the actual sanitary napkin 1 stored there as also having a three-dimensional, deformed, and fitting appearance. Furthermore, in situations such as... Figure 7 and Figure 8 In the case of the illustrated package 40 having multiple item identification portions 62, at least one of the multiple item identification portions 62 can be formed by a three-dimensional decorative portion 54. The item identification portion 62 on the back side 41B of the housing 41, which is provided with a sealing member 53, is formed by a printed layer 60, thereby preventing the three-dimensional decorative portion 54 from falling off when the package is opened.

[0177] In addition, such as Figure 8 As shown, there exists a situation where the packaging body 40 has a sanitary napkin set identification section 64 that displays products under the same brand name. In the sanitary napkin set identification section 64, the shapes of other sanitary napkins with different sizes and properties (presence or absence of wings 1w, daytime use, nighttime use, etc.) are indicated along with the stored sanitary napkin 1. Figure 8 In this case, a sanitary napkin set identification section 64 is provided on the back 41B (opening cover) of the storage body 41, and is therefore formed by the printing layer 60. However, the sanitary napkin set identification section 64 may also be formed by the three-dimensional decorative section 54. In particular, it is preferable that the sanitary napkin set identification section 64 is formed by the three-dimensional decorative section 54 when it is located on a surface other than the opening cover of the packaging body 40. In this way, it can give the user the impression that not only the stored sanitary napkin 1 is three-dimensionally deformed, but also the other sanitary napkins are three-dimensionally deformed.

[0178] However, it is not limited to the above. Each mark (61-64) provided on the package 40 can be formed by the three-dimensional decorative part 54 or by the ink-based flat printing layer 60.

[0179] Figure 11 This is a partial front view of the individual package 30. Figure 11In this context, the decorative piece 50 is used on the packaging piece 31 of the individual packaging unit 30 of the sanitary napkin. A three-dimensional decorative part 54 is provided on the outer side of the packaging piece 31. Additionally, in... Figure 11 The illustrated individual packaging 30 has joint portions 35 formed at both ends in the width direction. At the joint portions 35, the opposing packaging sheets 31 are joined by a welded portion 36. Thus, when the packaging sheet 31 has a welded portion 36 that houses and seals the sanitary napkin 1 inside, it is preferable that the welded portion 36 can be visually identified when viewing the decorative layer 53 of the packaging sheet 31 from above. "Viewing from above" means... Figure 5 Then observe the individual package 30 in the thickness direction of the packaging sheet 31.

[0180] At the welded portion 36, the thickness of the packaging sheet 31 decreases, and the welded portion 36 is recessed in the thickness direction of the individual packaging body 30 compared to the surrounding area. Therefore, the user can visually recognize the welded portion 36 that is recessed in the thickness direction, as well as the decorative layer 53 (three-dimensional decorative portion 54) that protrudes in the thickness direction. Therefore, the height of the decorative layer 53 is obvious, making it easier to visually recognize the three-dimensional decorative portion 54 in a three-dimensional way. Therefore, the user can easily get the impression that the sanitary napkin 1 stored in the individual packaging body 30 is also three-dimensionally deformed and fits snugly.

[0181] Furthermore, although not shown in the figure, the following situation exists: the packaging body 40 (storage body 41) of the sanitary napkin also has a welded portion for sealing the storage body 41. Therefore, when the decorative piece 50 is used in the storage body 41, it is preferable that the welded portion and the three-dimensional decorative portion 54 can be visually identified simultaneously when viewing the storage body 41 from above (when viewing the storage body 41 along the thickness direction of the decorative piece 50).

[0182] ===Manufacturing Method of Decorative Piece 50===

[0183] Figure 12 This diagram illustrates the manufacturing method of the decorative piece 50. The aforementioned decorative piece 50 can utilize... Figure 12 The manufacturing apparatus 70 is used for manufacturing. 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.

[0184] The conveying mechanism 71 is a mechanism for conveying the continuous body 51c of sheet 51 along the conveying direction. Examples of conveying mechanisms 71 include... Figure 12 The conveyor rollers shown, the conveyor belt (not shown), etc. The ink ejection device 72 ejects ink from the continuous body 51c of the sheet 51 conveyed by the conveying mechanism 71 along the conveying direction to form a flat, ordinary printed layer 60.

[0185] Downstream, the adhesive spraying device 73 sprays the adhesive forming the adhesive layer 52 directly onto the continuous body 51c of the sheet 51, or sprays the adhesive forming the adhesive layer 52 onto the printed layer 60. In this embodiment, a colorless and transparent ultraviolet-curable adhesive is sprayed. Then, the first irradiation device 74 irradiates the adhesive layer 52 with light (in this case, ultraviolet light) to cure it. However, the first irradiation device 74 irradiates with ultraviolet light to a degree that does not completely cure the adhesive layer 52. This ensures adhesion while fixing the shape of the adhesive layer 52. For this purpose, the intensity and irradiation time of the ultraviolet light are adjusted.

[0186] In this embodiment, an inkjet device is exemplified as the ink ejection device 72 and the adhesive ejection device 73. However, it is not limited to this, and various printing methods (liquid coating methods) such as gravure printing and offset printing can also be used to form the printing layer 60 and the adhesive layer 52.

[0187] Subsequently, the decorative layer conveying mechanism 75 supplies the continuous body 53c of the decorative layer 53 onto the adhesive layer 52. As the decorative layer conveying mechanism 75, an apparatus having an unshown feed roller for feeding out the continuous body 53c of the decorative layer 53, a conveying roller 751, and an unshown winding roller for winding the remaining portion of the continuous body 53c of the decorative layer 53 can be illustrated.

[0188] In a direction orthogonal to the conveying direction, the length of the continuous body 53c of the decorative layer 53 is set to be greater than or equal to the length of the region where the adhesive layer 52 is formed. That is, one or more adhesive layers 52 formed on the continuous body 51c of the sheet 51 are completely 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 that is in contact with the surface of the adhesive layer 52. The adhesive layer 52 has adhesive properties, so the continuous body 53c of the decorative layer 53 is adhered to the adhesive layer 52. During this process, the continuous body 53c of the decorative layer 53 and the adhesive layer 52 are also conveyed, so that the decorative layer 53 adhered to the adhesive layer 52 and the decorative layer 53 not in contact with the adhesive layer 52 are separated. The remaining portion of the continuous body 53c of the decorative layer 53 not adhered to the adhesive layer 52 is wound on a winding roller and recycled.

[0189] Finally, the second irradiation device 76 irradiates the adhesive layer 52 with light (in this case, ultraviolet light) to cure it, thus completely curing the adhesive layer 52 through the decorative layer 53. As a result, the adhesive layer 52 and the decorative layer 53 are firmly bonded together and integrated to form a three-dimensional decorative part 54.

[0190] According to the manufacturing method described above, a decorative layer 53 can be provided on the adhesive layer 52, forming a three-dimensional decorative portion 54 that protrudes from the surface of the sheet 51 in the thickness direction of the decorative layer 53. By using the decorative sheet 50 with the three-dimensional decorative portion 54 on any of the sanitary napkin 1, the individual packaging 30 of the sanitary napkin, and the encapsulation body 40 of the sanitary napkin, it is possible to give the user the impression of a three-dimensional product. However, the manufacturing method described above is just one example, and the manufacturing method of the decorative sheet 50 is not particularly limited.

[0191] The above-described embodiments are provided for easy understanding of this utility model and are not intended to limit its interpretation. It is self-evident that this utility model can be modified and improved without departing from its spirit, and that it includes equivalents.

Claims

1. A decorative sheet for absorbent products, characterized in that, The decorative sheet for this absorbent product is used on absorbent articles or individual packages of absorbent articles and is decorated accordingly. The decorative sheet used in this absorbent product has the following characteristics: piece; An adhesive layer is disposed on the surface of the sheet; and A decorative layer, disposed above the adhesive layer, has a maximum thickness of less than 10 μm. The decorative layer is located in a region that is visually recognizable to the user and protrudes from the surface of the sheet in the thickness direction of the sheet.

2. A decorative sheet for absorbent products, characterized in that, The decorative sheet for absorbent products is used on any of the following: absorbent articles, individual packaging of absorbent articles, and encapsulation of absorbent articles, and is decorated accordingly. The decorative sheet used in this absorbent product has the following characteristics: piece; An adhesive layer is disposed on the surface of the sheet; and A decorative layer, disposed above the adhesive layer, has a maximum thickness of less than 10 μm. The decorative layer is located in a region that is visually visible to the user and protrudes from the surface of the sheet in the thickness direction of the sheet. The overlapping areas of the decorative layer and the adhesive layer have different thicknesses. At the location where the decorative layer overlaps with the adhesive layer, the thickness of the end in a predetermined direction is smaller than the thickness of the portion adjacent to that end on the inner side of the predetermined direction.

3. The decorative sheet for absorbent products according to claim 2, characterized in that, At the location where the decorative layer overlaps with the adhesive layer, the central portion is recessed in a predetermined direction.

4. The decorative sheet for absorbent products according to claim 2, characterized in that, At the location where the decorative layer overlaps with the adhesive layer, the central portion is recessed in a predetermined direction. The adhesive layer has a protrusion extending in a predetermined direction relative to the decorative layer. The maximum thickness of the protrusion is smaller than the maximum thickness of the portion of the adhesive layer that overlaps with the decorative layer.

5. The decorative sheet for absorbent products according to claim 2, characterized in that, At the location where the decorative layer overlaps with the adhesive layer, the central portion is recessed in a predetermined direction. The adhesive layer has a protrusion extending in a predetermined direction relative to the decorative layer. The maximum thickness of the protruding portion is smaller than the maximum thickness of the portion of the adhesive layer that overlaps with the decorative layer. The length of the protrusion in the predetermined direction is shorter than the length of the portion of the adhesive layer that overlaps with the decorative layer in the predetermined direction.

6. The decorative sheet for absorbent products according to claim 2, characterized in that, At the location where the decorative layer overlaps with the adhesive layer, the central portion is recessed in a predetermined direction. The adhesive layer has a protrusion extending in a predetermined direction relative to the decorative layer. The maximum thickness of the protruding portion is smaller than the maximum thickness of the portion of the adhesive layer that overlaps with the decorative layer. The length of the protruding portion in the predetermined direction is shorter than the length of the portion of the adhesive layer that overlaps with the decorative layer in the predetermined direction. The maximum thickness of the adhesive layer is greater than the maximum thickness of the decorative layer.

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

8. The decorative sheet for absorbent products according to claim 1 or 2, characterized in that, The absorbent article has a compression section formed by compressing the surface sheet from the skin side. The minimum width of the decorative layer is smaller than the minimum width of the compression section.

9. The decorative sheet for absorbent products according to claim 1 or 2, characterized in that, The absorbent article has a compression section formed by compressing the surface sheet from the skin side. The maximum thickness of the portion where the decorative layer overlaps with the adhesive layer is smaller than the minimum depth of the compressed portion.

10. The decorative sheet for absorbent products according to claim 1 or 2, characterized in that, The decorative sheet for the absorbent product has a printed layer on the surface of the sheet. The adhesive layer and the decorative layer are disposed on top of the printed layer in a certain part.

11. The decorative sheet for absorbent products according to claim 1 or 2, characterized in that, The decorative sheet for the absorbent product is used in the individual packaging of the absorbent article or in the encapsulation of the absorbent article. The absorbent article has an absorbent core and a core sheet covering the surface of the absorbent core. The decorative piece has mutually orthogonal longitudinal and transverse directions. The first elongation is defined as the amount of elongation of the decorative piece at which the adhesive layer breaks when the decorative piece elongates in the direction with higher elongation strength in the longitudinal and transverse directions. The second elongation is defined as the amount of elongation of the core sheet when it breaks in the width direction of the absorbent article. At this time, the first elongation is greater than the second elongation.

12. The decorative sheet for absorbent products according to claim 1 or 2, characterized in that, The decorative piece has mutually orthogonal longitudinal and transverse directions, and has a first adhesive layer and a second adhesive layer. When the decorative piece is elongated in the direction with higher elongation strength in the longitudinal and transverse directions, the amount of elongation of the decorative piece when the first adhesive layer breaks is different from the amount of elongation of the decorative piece when the second adhesive layer breaks.

13. The decorative sheet for absorbent products according to claim 1 or 2, characterized in that, The decorative sheet for the absorbent product is used in the individual packaging of the absorbent article or in the encapsulation of the absorbent article. It has a welded portion that houses and seals the absorbent article inside. When viewed from above, the welded portion can also be visually identified.

14. The decorative sheet for absorbent products according to claim 1 or 2, characterized in that, The absorbent article has an absorbent core comprising a highly absorbent polymer. The minimum width of the decorative layer is smaller than the average particle size of the highly absorbent polymer.

15. The decorative sheet for absorbent products according to claim 1 or 2, characterized in that, The decorative sheet for absorbent products is used in the packaging of the absorbent article and has a coded identification section. The coded marking portion is formed by a printed layer that does not overlap with the adhesive layer and the decorative layer.

16. The decorative sheet for absorbent products according to claim 1 or 2, characterized in that, The decorative sheet for absorbent products is used in the packaging of the absorbent article and has an article identification portion indicating the absorbent article. The item identification portion is formed by the adhesive layer and the decorative layer.

Images