Individual packaging body for absorbent article

Abstract

The utility model provides an independent packaging body of an absorptive article. The independent packaging body of the absorptive article can improve attractiveness. An individual packaging body (30) for an absorbent article, said individual packaging body (30) being provided with: an absorbent article (1) provided with an absorbent body (10); and a packaging material (31) that individually packages the absorbent article (1), the absorbent article (1) and the packaging material (31) are folded, a pair of end portions of the packaging material (31) are provided with sealing portions (35) for sealing the end portions, in a plan view, the packaging material (31) is provided with a plurality of convex portions (32) that protrude outward at least in a region between the pair of end portions, and the convex portions (32) are pyramid-shaped or frustum-shaped.

Description

TECHNICAL FIELD

[0001] The present application relates to an independent package of an absorbent article and a manufacturing method of a packaging member. BACKGROUND

[0002] An absorbent article such as a sanitary napkin is generally packaged by an independent packaging member (an independent package). Further, it is sold and circulated as a package body in which a plurality of independent packages are housed in a predetermined bag. Since the sanitary napkin is taken out from the package body in the state of the independent package, the independent package is also required to have an aesthetic appearance. In addition, for example, in Patent Documents 1 and 2, a method of forming a pattern such as a concave-convex portion in the bag of the package body to improve the aesthetic appearance is disclosed.

[0003] PRIOR ART DOCUMENTS

[0004] PATENT DOCUMENTS

[0005] Patent Document 1: Japanese Patent Application Publication No. 2018-70175

[0006] Patent Document 2: Japanese Patent Application Publication No. 2021-49998 SUMMARY

[0007] PROBLEMS TO BE SOLVED BY THE INVENTION

[0008] The packaging member of the independent package is thinner than the bag of the package body, and in addition, the use and function are different. In Patent Documents 1 and 2, although the pattern such as the concave-convex portion is formed in the bag of the package body, it is difficult to apply the above technology to the packaging member of the independent package to obtain the same effect.

[0009] The present application has been made in view of the above-described problems of the related art, and has an object to provide an independent package of an absorbent article capable of improving the aesthetic appearance.

[0010] MEANS FOR SOLVING THE PROBLEMS

[0011] The main application for achieving the above object is an independent package of an absorbent article, characterized by comprising: an absorbent article including an absorbent body; and a packaging member independently packaging the absorbent article, the absorbent article and the packaging member being folded, a sealing portion for sealing a pair of end portions of the packaging member being provided at the pair of end portions, and a plurality of convex portions protruding outward in the packaging member being provided at least in a region between the pair of end portions in a plan view, the convex portions being in a shape of a pyramid or a truncated pyramid.

[0012] Preferably, the convex portions are arranged at predetermined intervals between the pair of end portions of the packaging member.

[0013] Preferably, the package has a first film, the individual package is housed in a bag having a second film, the average thickness of the first film is smaller than the average thickness of the second film, and the average light transmittance of the second film is smaller than the average light transmittance of the first film.

[0014] Preferably, the package has a first film, the absorbent article has a backsheet on a non-skin side of the absorbent body, and the average light transmittance of the first film is greater than the average light transmittance of the backsheet.

[0015] Preferably, the seal portion has a plurality of fusion portions, and the area of the protrusions is smaller than the area of the fusion portions in plan view.

[0016] Preferably, the protrusions are present between adjacent fusion portions, and the protrusions are not present in the fusion portions.

[0017] Preferably, the plurality of protrusions includes first protrusions and second protrusions that differ in height.

[0018] Preferably, the first protrusions are higher than the second protrusions, and the difference in height between the first protrusions and the second protrusions is smaller than the height of the second protrusions.

[0019] Preferably, the maximum height of the plurality of protrusions is less than 50 μm.

[0020] Preferably, the absorbent article is fixed to the package by means of a partition, and the number of protrusions per unit area is smaller in a region of the package in which a joint between the partition and the package in the thickness direction overlaps than in other regions.

[0021] Preferably, the number of protrusions per unit area is smaller in a region in which the seal portion is present than in other regions in plan view.

[0022] Preferably, an adhesive portion is provided near an opening of the individual package, the adhesive portion adheres the package in a folded state, and the number of protrusions per unit area is smaller in a region of the package in which the adhesive portion overlaps in the thickness direction than in other regions.

[0023] Preferably, the total area of the plurality of protrusions is greater than the area of a region in which the protrusions are not formed in a region between the pair of end portions in plan view.

[0024] Other features of the present application will be clarified by the description and drawings.

[0025] Effects of the application

[0026] According to the present application, an independent package of an absorbent article that can improve the appearance can be provided. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a plan view of the sanitary napkin 1 in the unfolded state as viewed from the skin side.

[0028] Figure 2 is a schematic cross-sectional view of the sanitary napkin 1.

[0029] Figure 3 is a plan view of the independent package 30 of the sanitary napkin in the unfolded state as viewed from the non-skin side.

[0030] Figure 4 is a plan view of the independent package 30 of the sanitary napkin in the unfolded state as viewed from the skin side.

[0031] Figure 5A is a plan view of the opened side of the independent package 30 in the folded state, Figure 5B is a plan view of the non-opened side of the independent package 30 in the folded state.

[0032] Figure 6A is a view showing an example of the package 40 of the sanitary napkin, Figure 6B is a view showing a state after the bag 41 is opened.

[0033] Figure 7 is a schematic explanatory view showing an example of a manufacturing method of the package 31.

[0034] Figure 8A and Figure 8B is an explanatory view of the recess 82 formed in the cooling roll 80a.

[0035] Figure 9A is a perspective view schematically showing the protrusion 32 formed in the package 31, Figure 9B is a side view of the protrusion 32.

[0036] Figure 10A , Figure 10B is an explanatory view of the reflection of light.

[0037] Figure 11 is an explanatory view of a case where the protrusion 32 has a height deviation.

[0038] BRIEF DESCRIPTION OF DRAWINGS

[0039] 1, sanitary napkin (absorbent article); 2, surface sheet; 3, intermediate sheet; 4, back sheet (back film); 5, wing sheet; 6, side sheet; 8, adhesive portion; 9, adhesive portion; 10, absorbent body; 11, absorbent core; 12, core cover sheet; 20, compression portion; 21, linear compression portion; 22, dot-shaped compression portion; 30, individual package of sanitary napkin; 31, package; 31M, sheet raw material; 31R, continuous body of package; 32, protrusion; 32a, inclined surface; 33, partition; 34, release sheet; 35, sealing portion; 36, fusion portion; 37, adhesive portion; 38, joint portion; 40, package of sanitary napkin; 41, pouch; 42, base material (second film); 42a, 42b, folding line; 43, sealing portion; 44, easy-to-tear line; 44a, hole; 45, opening portion; 70, extruder; 80a, 80b, cooling roll (roll); 81, outer peripheral surface; 82, recess; 111, high-absorbency polymer. DETAILED DESCRIPTION

[0040] According to the description and the drawings of the present specification, at least the following matters become clear.

[0041] (Mode 1)

[0042] An individual package of an absorbent article, characterized by comprising: an absorbent article having an absorbent body; and a package individually packaging the absorbent article, the absorbent article and the package being folded, a pair of end portions of the package being provided with sealing portions for sealing the end portions, and in the package, at least a region between the pair of end portions being provided with a plurality of protrusions protruding outward in plan view, the protrusions being in a shape of a pyramid or a truncated pyramid.

[0043] According to Mode 1, the absorbent article is folded in a manner covered by the package, and a pair of end portions of the package is sealed, whereby foreign matter is less likely to enter from the outside. In addition, a plurality of protrusions in a shape of a pyramid or a truncated pyramid are provided on the outside of the package, whereby a design of a stereoscopic shape with different depths can be formed, and a shiny, high-quality impression can be left by reflection of light at the inclined surface. Thus, an improvement in aesthetic quality can be achieved.

[0044] (Mode 2)

[0045] The individual package of an absorbent article according to Mode 1, characterized in that the protrusions are arranged at predetermined intervals between the pair of end portions of the package.

[0046] According to Mode 2, the protrusions are formed in arrangement on both the opening surface side and the non-opening surface side of the package, and thus, when the individual package is held by hand, a high-quality impression can be left.

[0047] (Mode 3)

[0048] The independent package of the absorbent article according to Mode 1 or Mode 2, wherein the package member has a first film, the independent package is housed in a bag having a second film, the average thickness of the first film is smaller than the average thickness of the second film, and the average light transmittance of the second film is smaller than the average light transmittance of the first film.

[0049] According to Mode 3, by housing the independent package in the bag, the content is not easily known by others at the time of purchase of the absorbent article, and the absorbent article is not easily adversely affected at the time of carrying. Further, at the time of use of the absorbent article, the package member is thin and has a high light transmittance, and thus, an impression of high quality, thinness, and non-stuffiness can be left.

[0050] (Mode 4)

[0051] The independent package of the absorbent article according to any one of Modes 1 to 3, wherein the package member has a first film, the absorbent article has a back sheet on a non-skin side of the absorbent body, and the average light transmittance of the first film is greater than the average light transmittance of the back sheet.

[0052] According to Mode 4, at the time of use of the absorbent article, an impression of high quality, thinness, and non-stuffiness can be left, and by making the light transmittance of the back sheet small, an impression that the effect of receiving excretions is high can be left.

[0053] (Mode 5)

[0054] The independent package of the absorbent article according to any one of Modes 1 to 4, wherein the sealing portion has a plurality of fusion portions, and the area of the protruding portion is smaller than the area of the fusion portion in plan view.

[0055] According to Mode 5, by making the area of the protruding portion smaller than the area of the fusion portion, an impression of a delicate and elegant three-dimensional design can be left.

[0056] (Mode 6)

[0057] The independent package of the absorbent article according to Mode 5, wherein the protruding portion is present between adjacent fusion portions, and the protruding portion is not present in the fusion portion.

[0058] According to Mode 6, by making the protruding portion present between the fusion portions, the overall appearance is not impaired, and by making the protruding portion not present in the fusion portion, the position of the fusion portion is easily known.

[0059] (Mode 7)

[0060] The individual package of the absorbent article according to any one of modes 1 to 6, characterized in that the plurality of projections include a first projection and a second projection that differ in height.

[0061] According to mode 7, by the presence of projections that differ in height, a three-dimensional design that differs more in depth can be formed.

[0062] (Mode 8)

[0063] The individual package of the absorbent article according to mode 7, characterized in that the first projection is higher than the second projection, and the difference in height between the first projection and the second projection is smaller than the height of the second projection.

[0064] According to mode 8, the projections have a small difference in height, and a high-quality impression can be left.

[0065] (Mode 9)

[0066] The individual package of the absorbent article according to any one of modes 1 to 8, characterized in that the maximum height of the plurality of projections is less than 50 μm.

[0067] According to mode 9, the projections can be formed so that the user feels no height of the projections even when the user touches the projections with his or her hand, and a rough impression can not be left.

[0068] (Mode 10)

[0069] The individual package of the absorbent article according to any one of modes 1 to 9, characterized in that the absorbent article is fixed to the package by means of a partition, and the number of projections per unit area in a region of the package in which a joint between the partition and the package in the thickness direction overlaps is smaller than the number of projections per unit area in other regions.

[0070] According to mode 10, the number of projections at the joint between the partition and the package is smaller than the number of projections in other regions, and thus the position at which the partition and the package are fixed can be easily recognized.

[0071] (Mode 11)

[0072] The individual package of the absorbent article according to any one of modes 1 to 10, characterized in that, when viewed from above, the number of projections per unit area in a region in which the seal is provided is smaller than the number of projections per unit area in other regions.

[0073] According to mode 11, the position of the seal can be easily recognized.

[0074] (Mode 12)

[0075] The individual package of the absorbent article according to any one of modes 1 to 11, characterized in that an adhesive portion is provided in the vicinity of the opening of the individual package, the adhesive portion adheres the package member in a folded state, and the number of the protrusions per unit area in a region of the package member overlapping the adhesive portion in the thickness direction is less than the number of the protrusions per unit area in other regions.

[0076] According to mode 12, the opening position can be easily recognized.

[0077] (Mode 13)

[0078] The individual package of the absorbent article according to any one of modes 1 to 12, characterized in that, when viewed from above, and in a region between the pair of end portions, the total area of the plurality of protrusions is larger than the area of a region in which the protrusions are not formed.

[0079] According to mode 13, the region in which the protrusions are formed is large, and thus a three-dimensional and high-quality impression can be left.

[0080] (Mode 14)

[0081] A method of manufacturing a package member for an individual package of an absorbent article, characterized by comprising: a step of conveying an uncured film raw material; and a step of passing the film raw material between a pair of rollers, at least one of the pair of rollers being provided with a pattern of a plurality of protrusions for forming a pyramid shape or a prism shape in the film raw material.

[0082] According to mode 14, a three-dimensional design can be formed in the package member (film raw material), and a shiny and high-quality impression can be left by reflection of light. Thus, an improvement in the aesthetic quality of the individual package can be achieved.

[0083] (Mode 15)

[0084] The method of manufacturing a package member according to mode 14, characterized in that the pair of rollers has a cooling member that cools the film raw material.

[0085] According to mode 15, the protrusions can be formed while the film raw material being conveyed is cured.

[0086] == Mode ==

[0087] Hereinafter, as the individual package of the absorbent article of the present application, an example in which the absorbent article is a sanitary napkin for sanitary use will be described. However, the absorbent article is not limited to the sanitary napkin for sanitary use, and for example, can be a sanitary pad, an absorbent pad (a light incontinence pad), or the like.

[0088] <<Basic structure of sanitary napkin 1>>

[0089] Figure 1 is a plan view of sanitary napkin 1 in an unfolded state as viewed from the skin side. Figure 2 is a schematic sectional view of sanitary napkin 1. Sanitary napkin 1 in an unfolded state has a longitudinal direction, a width direction, and a thickness direction that are orthogonal to one another. In the longitudinal direction of sanitary napkin 1, the side that comes into contact with the lower abdomen of the wearer is referred to as the "front side", and the side that comes into contact with the buttocks of the wearer is referred to as the "rear side". In addition, in the thickness direction of sanitary napkin 1 (refer to Figure 2 ), the side that comes into contact with the skin of the wearer is referred to as the "skin side", and the side opposite thereto is referred to as the "non-skin side".

[0090] As shown in Figure 2 , sanitary napkin 1 has a surface sheet 2, an intermediate sheet 3, an absorbent body 10, a back sheet 4, a wing sheet 5, and a side sheet 6. Adjacent materials in the thickness direction are joined and fixed using an adhesive (not shown) such as a hot-melt adhesive (HMA).

[0091] The surface sheet 2 is a member that comes into contact with the skin of the user when sanitary napkin 1 is used, and allows excreted liquid such as menstrual blood (hereinafter also referred to as "excrement") to pass through from the skin side to the non-skin side in the thickness direction, and move toward the absorbent body 10. Therefore, the surface sheet 2 uses a soft sheet of an appropriate liquid permeability such as a thermobonded nonwoven fabric. In addition, the surface sheet 2 can also be a sheet using cotton as a natural fiber (for example, a sheet member composed of 100% cotton, a mixed sheet of cotton and a thermobonded nonwoven fabric, or the like). Thereby, irritation to the skin of the wearer can be further reduced.

[0092] The intermediate sheet 3 is a liquid-permeable sheet, and examples include a nonwoven fabric or the like that is the same as the surface sheet 2. The intermediate sheet 3 is provided on the skin side of the absorbent body 10, and functions to prevent backflow of excrement such as menstrual blood, improve diffusion of excrement, and improve cushioning properties. However, sanitary napkin 1 can also not have the intermediate sheet 3.

[0093] The back sheet 4 (corresponding to a back film) is disposed on the non-skin side of the absorbent body 10, and suppresses the case where liquid absorbed by the absorbent body 10 seeps out to the clothing side (non-skin side) such as underwear when sanitary napkin 1 is used. The back sheet 4 uses a resin film of polyethylene (PE) or the like as a soft sheet (film) of an appropriate liquid-impermeable property. Furthermore, the planar size of the surface sheet 2 and the back sheet 4 is larger than the planar size of the absorbent body 10.

[0094] The wing sheet 5 is extended to a position further outward in the width direction than the side sheet 6 together with the back sheet 4, and a wing portion 1w is formed in the central portion in the longitudinal direction of sanitary napkin 1.

[0095] The side sheet 6 can be either a liquid-permeable sheet or a liquid-impermeable sheet, for example, it can be a non-woven fabric similar to the surface sheet 2. In addition, the side sheet 6 is folded back inward in the width direction at the end located on the skin side of the surface sheet 2.

[0096] The absorbent 10 is a component that absorbs and retains menstrual blood and other excretions (liquids) inside. Figure 2 The absorber 10 has an absorbent core 11 and a core-covered sheet 12 covering the absorbent core 11.

[0097] The absorbent core 11 is formed by shaping liquid absorbent fibers such as pulp fibers into a predetermined shape (e.g., roughly hourglass shape when viewed from above). In addition, the absorbent core 11 contains (mixed with) a plurality of granular superabsorbent polymers (SAP) 111.

[0098] The core-covering sheet 12 is a liquid-permeable sheet component that covers the surface (outer peripheral surface) of the absorbent core 11, and examples include cotton paper.

[0099] Furthermore, the structure of the absorbent 10 is not limited to the structure described above. For example, it can be an SAP sheet formed by attaching the SAP layer to a hydrophilic sheet, or an air-laid sheet formed by forming liquid absorbent fibers into a sheet using an air-laid method. Alternatively, the core-covered sheet 12 may be omitted.

[0100] 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. 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 intermediate sheet 3, and the absorbent body 10 (partially or entirely) are compressed along the thickness direction. However, the compression section 20 may only compress the sanitary napkin 1 from the skin side of the surface sheet 2 along the thickness direction, for example, without reaching the absorbent body 10.

[0101] In addition, such as Figure 1 As shown, the 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 as a compression section 20. However, the number, shape, and arrangement of the compression sections 20 are not particularly limited. In addition, the linear compression section may also be a compression section formed by continuous compression in a groove shape.

[0102] The above describes the basic structure of sanitary napkin 1, 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.

[0103] <<Individually packaged sanitary napkins 30>>

[0104] Figure 3 is a plan view of the individual package 30 of the sanitary napkin in the unfolded state as viewed from the non-skin side. Figure 4 is a plan view of the individual package 30 of the sanitary napkin in the unfolded state as viewed from the skin side. Figure 5A is a plan view of the opening surface side of the individual package 30 in the folded state, Figure 5B is a plan view of the non-opening surface side of the individual package 30 in the folded state. Further, in Figure 3 , Figure 4 is a plan view of the individual package 30 in the state in which the wings 1w are folded inward (the skin side of the sanitary napkin 1). In addition, Figure 3 , Figure 4 is a plan view of the individual package 30 in the state in which the wings 1w are folded inward (the skin side of the sanitary napkin 1). In addition, Figure 5A , Figure 5B is a view of the individual package 30 in the state in which the individual package 30 is opened and unfolded, and the sealing portion 35, the adhesive portion 37, and the like described later are formed.

[0105] The individual package 30 of the sanitary napkin 1 (hereinafter, also simply referred to as the "individual package 30") is formed by individually packaging the sanitary napkin 1 with a packaging member 31, and includes the sanitary napkin 1, the packaging member 31, a partition member 33, and a peel sheet 34.

[0106] Further, as shown in Figure 3 , a plurality of adhesive portions 8 formed by applying an adhesive or the like are provided on the non-skin side of the sanitary napkin 1, that is, the non-skin side of the backsheet 4. On the main body portion of the sanitary napkin 1, a plurality of rectangular adhesive portions 8 extending in the longitudinal direction are provided in alignment in the width direction. The adhesive portions 8 serve to fix the main body portion of the sanitary napkin 1 to the inner side of the underwear of the wearer.

[0107] In addition, as shown in Figure 4 , a plurality of rectangular adhesive portions 9 extending in the longitudinal direction are also provided in alignment in the width direction on the wings 1w. When the sanitary napkin 1 is worn, the wings 1w are bent and fixed to the outer side of the underwear by the adhesive portions 9. Further, the shapes, numbers, and arrangements of the adhesive portions 8 and 9 are not limited to those illustrated in Figure 3 , Figure 4 .

[0108] The packaging member 31 is a rectangular sheet member that individually packages the sanitary napkin 1, and has an inner side that fixes the sanitary napkin 1 (refer to Figure 4 ) and an outer side that is exposed to the outside in the individual package 30 (refer to Figure 3). In the present embodiment, a thinner resin film (corresponding to the first film) made of resin is used as the packaging member 31. In addition, the long side direction of the packaging member 31 corresponds to the long side direction of the sanitary napkin 1, and the short side direction, i.e., the width direction, of the packaging member 31 corresponds to the width direction of the sanitary napkin 1. In addition, one side of the long side direction of the packaging member 31 (the side on which the adhesive portion 37 described later is present) corresponds to the front side of the sanitary napkin 1, and the other side of the long side direction of the packaging member 31 corresponds to the back side of the sanitary napkin 1.

[0109] In addition, as shown in an enlarged portion of Fig. 2, a plurality of convex portions 32 are formed on the non-skin side surface (outer side surface) of the packaging member 31. In the present embodiment, the convex portions 32 are prisms having a hexagonal planar shape of the bottom surface, and are provided in a manner protruding to the outer side. The plurality of convex portions 32 are arranged at a certain interval on the non-skin side surface of the packaging member 31. Further, the details of the convex portions 32 will be described later. Figure 3

[0110] In addition, as shown in Fig. 5, printing is partially applied to the non-skin side surface (outer side surface) of the packaging member 31. Hereinafter, the area on which printing is applied is referred to as an area Rl, and the area on which printing is not applied is referred to as an area R2. Further, the printing of the packaging member 31 is performed after the convex portions 32 described above are formed, and therefore the convex portions 32 are present in both the area Rl and the area R2.

[0111] Sealing portions 35 for sealing the ends in the folded state are provided at both ends (a pair of end portions) in the width direction of the packaging member 31. In the sealing portions 35, the ends of the packaging member 31 folded together with the sanitary napkin 1 are overlapped and joined to each other. As the joining method, known joining methods such as heat sealing, ultrasonic sealing, an adhesive, and a combination of the above-described methods can be exemplified, and in the present embodiment, the joining is performed by heat sealing, and as shown in the drawing, a plurality of fusion portions 36 (in other words, the sealing portions 35 have a plurality of fusion portions 36) are formed in the sealing portions 35.

[0112] In addition, an adhesive portion 37 is formed in the vicinity of the end T on the front side in the long side direction of the packaging member 31 (slightly on the back side from the end T) along the width direction. In the adhesive portion 37, the packaging member 31 in the folded state is adhered to each other by a hot melt adhesive (HMA). Further, the hot melt adhesive is an adhesive that is solid at normal temperature, is applied by being melted (thermally fused) by heating, and is adhered by being solidified by cooling.

[0113] In addition, the packaging member 31 and the sanitary napkin 1 are fixed by the partition member 33.

[0114] ​The separator 33 is a sheet member disposed between the backsheet 4 of the sanitary napkin 1 and the packaging member 31. As for the skin side surface of the separator 33, it is adhered to the adhesive portion 8 provided at the main body portion (non-skin side surface of the backsheet 4) of the sanitary napkin 1 in a peelable manner by using a silicone resin or the like subjected to a peeling process. The peeling process is known, and thus the description thereof is omitted.

[0115] On the other hand, the non-skin side surface of the separator 33 is fixed to the packaging member 31 by the joint portion 38 provided between the separator 33 and the packaging member 31. As shown in Figure 3 , in the present embodiment, the joint portion 38 is provided at three places. Further, in the joint portion 38, the separator 33 and the packaging member 31 are joined (fixed) by a hot melt adhesive (HMA).

[0116] Further, it can also be that the sanitary napkin 1 is directly fixed to the packaging member 31 in a peelable manner without the aid of the separator 33.

[0117] Further, as shown in Figure 4 , the wing portion 1w is folded inward in the width direction on the skin side surface of the sanitary napkin 1. The adhesive portion 9 of the wing portion 1w is covered by the release sheet 34.

[0118] The packaging member 31 and the sanitary napkin 1 in the unfolded state (state in which the seal portion 35 and the adhesive portion 37 are not formed) are folded at the two folding portions F1, F2 along the width direction. Then, the both end portions of the packaging member 31 folded together with the sanitary napkin 1 in the width direction are sealed to form the seal portion 35. Further, in the state in which the packaging member 31 is folded, the packaging member 31 near the opening is adhered to each other by a hot melt adhesive (HMA) or the like to form the adhesive portion 37. Thus, the independent packaging body 30 shown in Figure 5A and Figure 5B is obtained.

[0119] Thus, in the case of the independent packaging body 30, the sanitary napkin 1 is folded in a manner covered by the packaging member 31, the pair of end portions of the packaging member 31 in the width direction are sealed, and further, the adhesion by the adhesive portion 37 is performed near the opening, whereby foreign matter is less likely to enter from the outside. Further, it can also be configured that the adhesive portion 37 is not provided, but a seal member is provided, for example, near the opening, and the adhesion is performed by the seal member.

[0120] When the independent packaging body 30 is opened, the portion between the end T of the packaging member 31 of the opening side surface of the independent packaging body 30 and the adhesive portion 37 is pinched by the fingers and pulled, whereby the joint of the adhesive portion 37 and the seal portion 35 is released, and the folding portions F1, F2 are unfolded. Thus, the state shown in Figure 5A , Figure 3 , Figure 4 is obtained.

[0121] The above describes the individual package 30 of sanitary napkins, but the structure of the individual package 30 is not limited to the above-described structure. For example, the number of the folding portions F1, F2 of the packaging member 31 is not limited to two, but can be one or more than three. Also, the packaging member 31 and the sanitary napkin 1 can be folded by folding portions in the width direction as well as in the longitudinal direction. Also, the packaging member 31 and the sanitary napkin 1 can be folded in separate manners. That is, the packaging member 31 can be folded with the sanitary napkin 1, which is first folded, being enclosed.

[0122] <Sanitary Napkin Package 40>

[0123] Figure 6A is a view showing an example of a sanitary napkin package 40, Figure 6B is a view showing a state after the pouch 41 is opened. The sanitary napkin package 40 (hereinafter also simply referred to as "package 40") has a plurality of (four in this example) individual packages 30 of sanitary napkins and a pouch 41 that accommodates the plurality of individual packages 30 of sanitary napkins.

[0124] Figure 6A and Figure 6B The pouch 41 exemplified has a longitudinal direction, a lateral direction, and a front-rear direction (thickness direction) that intersect with each other. Further, the longitudinal direction is a longitudinal direction of the pouch 41, and the lateral direction is a lateral direction of the pouch 41. Also, in the pouch 41, Figure 6B the front-rear direction of the pouch 41 corresponds to the thickness direction of the individual package 30 (sanitary napkin 1). Also, the longitudinal direction of the pouch 41 corresponds to the width direction of the individual package 30. However, this is not limiting, and the lateral direction of the pouch 41 can correspond to the width direction of the individual package 30.

[0125] The pouch 41 has a base material 42, a sealing portion 43, and a tearable line 44.

[0126] The base material 42 (corresponding to a second film) is a member that constitutes the pouch 41 and is formed of a resin film such as a polyethylene film (PE) or a polyethylene terephthalate film (PET). Although not shown in the present embodiment, printing of characters, patterns, and the like is generally applied to the outer side of the base material 42. Further, there is a case where a transparent film is formed on the base material 42. Also, the base material 42 is bent at folding lines 42a, 42b provided at both ends in the lateral direction. At the folding line 42a, the base material 42 is folded in a convex manner, and at the folding line 42b, the base material 42 is folded in a concave manner.

[0127] The sealing portion 43 is provided by heat-sealing the inner surfaces of the base material 42 to each other at both ends in the longitudinal direction of the pouch 41. That is, a pair of the sealing portions 43 is provided at both ends in the longitudinal direction.

[0128] The tear lines 44 are portions for opening the package 41, and a pair of tear lines 44 is provided at both ends in the longitudinal direction of the package 41, at positions inward of the seal portions 43. The tear lines 44 are formed of a plurality of holes 44a in the transverse direction. Further, the tear lines 44 can be provided only on one side in the longitudinal direction.

[0129] When the user holds one end of the package 41 with fingers from the state shown in Fig. 6, and pulls the end along the tear lines 44, the opening portion 45, which becomes the outlet of the individual package 30, is formed, as shown in Fig. 7, and the package 41 becomes an opened state. Thus, the individual package 30 housed in the package 41 can be taken out from the opening portion 45. Figure 6A Figure 6B When the user holds one end of the package 41 with fingers from the state shown in Fig. 6, and pulls the end along the tear lines 44, the opening portion 45, which becomes the outlet of the individual package 30, is formed, as shown in Fig. 7, and the package 41 becomes an opened state. Thus, the individual package 30 housed in the package 41 can be taken out from the opening portion 45.

[0130] The user observes the individual package 30 taken out from the package 40 before using the sanitary napkin 1, and thus the individual package 30 is required to have an aesthetic appearance. In the present embodiment, the shape, light transmittance, and the like of the wrapper 31 of the individual package 30 are used to improve the aesthetic appearance of the individual package 30.

[0131] <<About the Wrapper 31>>

[0132] As described above, the wrapper 31 is formed of a thin resin film, and a plurality of convex portions 32 is formed on the non-skin side (outer side) surface.

[0133] First, the manufacturing method of the wrapper 31 will be described.

[0134] <Manufacturing Method of the Wrapper 31>

[0135] Figure 7 is a schematic explanatory view showing an example of the manufacturing method of the wrapper 31.

[0136] The extruder 70 is a device that extrudes a resin (unhardened resin) heated and melted into a sheet shape. Further, as the resin (film raw material) for the wrapper 31, a soft polyethylene (PE) resin, a polyethylene terephthalate (PET) resin, or a polypropylene (PP) resin is preferable.

[0137] The melted resin (film raw material 31M) extruded from the extruder 70 is conveyed in the conveying direction by a conveying mechanism (not shown), and passes between a pair of cooling rollers 80a and 80b.

[0138] ​A pair of cooling rollers 80a, 80b are rollers with cooling members that cool while pressing the molten resin (film raw material 31M) passing between the rollers and convey in the conveyance direction. As the cooling members, there is no particular limitation, and for example, it can be a cooling member that circulates water inside, or a cooling member that circulates a refrigerant (oil, etc.). As a result, the film raw material 31M (molten resin) is cooled and solidified to form a continuous body 31R of relatively thin packaging pieces. The continuous body 31R of packaging pieces is wound by a not-illustrated winder and processed into a square shape to be used as packaging pieces 31.

[0139] Further, on the outer peripheral surface 81 of one of the pair of cooling rollers 80a, 80b in the present embodiment (here, the cooling roller 80a), a pattern (a plurality of recesses 82) for forming a plurality of protrusions 32 on the packaging pieces 31 is formed.

[0140] Figure 8A is an explanatory view of the recess 82 formed on the cooling roller 80a. Figure 8B is a cross-sectional view of the recess 82.

[0141] As shown in Figure 8A , Figure 8B , the recess 82 is formed so as to be recessed inwardly with respect to the outer peripheral surface 81 of the cooling roller 80a. In addition, as shown in Figure 8A , the recess 82 is provided in a shape corresponding to the shape of the protrusion 32 (hexagonal frustum shape to be described later), and a plurality of recesses 82 are arranged at a certain pitch (the same pitch as the protrusion 32).

[0142] By passing the film raw material 31M (molten resin) between the cooling roller 80a and the cooling roller 80b, it is possible to cool the film raw material 31M in conveyance, and it is possible to form a plurality of protrusions 32 on the surface of the film raw material 31M opposite the cooling roller 80a. As a result, it is possible to form a three-dimensional design of the protrusions 32 on the packaging pieces 31 formed from the film raw material 31M, and as will be described later, it is possible to leave a shiny, high-quality impression by reflection of light.

[0143] <Effects Based on the Protrusions 32>

[0144] Figure 9A is a perspective view schematically showing the protrusions 32 formed on the packaging pieces 31, Figure 9B is a side view of the protrusions 32.

[0145] The protrusions 32 are in a shape corresponding to the recesses 82 of the cooling roller 80a, and in the present embodiment, the protrusions 32 are in a shape of a prism (hexagonal prism) with a substantially hexagonal base. In addition, the prism refers to a shape formed by cutting off the top of a pyramid, and is also called a truncated pyramid. As shown in Figure 9BAs shown, the protrusion 32 protrudes from the bottom surface, and the height of this protrusion (the distance to the top) is defined as the height (h) of the protrusion 32. Additionally, as... Figure 9A As shown, in the protrusion 32, six inclined surfaces 32a, each with a side of the hexagonal base, are formed around the center of the protrusion 32. Furthermore, the inclination directions (in other words, the normal directions) of these six inclined surfaces 32a are all different, thus the direction of light reflection is different.

[0146] Figure 10A , Figure 10B This is an illustration of light reflection. Furthermore, light reflection is broadly categorized into diffuse reflection and specular reflection. Figure 10A This illustrates the case of diffuse reflection. Figure 10B This illustrates the case of specular reflection.

[0147] like Figure 10A In this way, when light shines on an object with an uneven surface, the light bounces in all directions (diffuse reflection). In this case, the stronger reflected light cannot be visually identified from any angle.

[0148] In contrast, such as Figure 10B In this way, when light shines on a flat object, it bounces in one direction (specular reflection). In specular reflection, as shown in the figure, the angle of incidence A1 and the angle of reflection A2 are equal. Furthermore, the angle of incidence A1 and the angle of reflection A2 are the angles relative to the normal to the reflecting surface (in this case, the inclined surface 32a).

[0149] In this embodiment, the packaging 31 has multiple protrusions 32, and the orientation (or orientation of the normal) of the six inclined surfaces 32a of each protrusion 32 is different. Therefore, when light is shone onto the packaging 31, it is possible to form areas where reflected light enters the eye and areas where reflected light does not enter the eye. In other words, it is possible to visually identify reflected light at multiple locations on the packaging 31.

[0150] In this way, by providing multiple frustum-shaped protrusions 32 on the packaging component 31, a three-dimensional design with varying depths can be formed, and the reflection of light from the multiple protrusions 32 can leave a shiny, high-quality impression. Thus, the aesthetic appeal is improved.

[0151] Furthermore, a plurality of protrusions 32 are arranged at certain intervals between the two ends (specifically, the sealing portions 35) in the width direction of the packaging 31. Thus, when the packaging 30 is formed as the individual package 30 shown in FIG. 5, the protrusions 32 are arranged on both the opening and non-opening sides of the packaging 31, making both sides appear shiny due to light reflection. Therefore, when holding the individual package 30, a high-quality impression is left.

[0152] In addition, Figure 3 In the top view, the area of ​​a protrusion 32 is smaller than the area of ​​the weld portion 36 (one of a plurality of weld portions 36) of the sealing portion 35. For example, one side of the weld portion 36 is about 0.8 mm, while one side of the protrusion 32 is about 100 μm to 130 μm.

[0153] In this way, by making the area of ​​the protrusion 32 smaller, an impression of exquisite and elegant design can be left.

[0154] In addition, in this embodiment, Figure 7 During the manufacturing of the packaging component 31, a protrusion 32a is formed on the entire surface opposite to the cooling roller 80a (that is, a protrusion 32a is also formed in the area of ​​the sealing portion 35). Then, a weld portion 36 is formed on the sealing portion 35 by heat sealing. At this time, by applying heat and pressure to the area where the weld portion 36 of the sealing portion 35 is located, the protrusion 32 formed at the location of the weld portion 36 is flattened. In other words, the situation becomes such that there are protrusions 32 between adjacent weld portions 36, but no protrusions 32 are present in the weld portion 36 itself.

[0155] Thus, by having protrusions 32 between adjacent welded portions 36 of the sealing portion 35, the overall appearance is not compromised. Furthermore, the absence of protrusions 32 in the welded portions 36 makes their location easily identifiable. In this embodiment, although protrusions 32 are provided in both the sealing portions 35 (between the welded portions 36), it is sufficient that protrusions 32 are provided only in the area between at least one pair of sealing portions 35; they may not be present in the area of ​​the sealing portions 35.

[0156] In addition, Figure 7 During the manufacturing of the packaging 31, variations in the film thickness of the sheet material 31M and the shape of the outer peripheral surface of the cooling roller 80a can make it difficult to ensure uniform contact between the cooling roller 80a and the sheet material 31M. Furthermore, manufacturing deviations can occur in the shape (e.g., depth) of the multiple recesses 82. Therefore, variations in the height of the multiple protrusions 32 formed in the packaging 31 can occur.

[0157] Figure 11 This is an explanatory diagram showing the situation where there is a height deviation in the protrusion 32.

[0158] Figure 11 The protrusion 32H shown on the left is the tallest of the multiple protrusions 32, with a height of h1. Additionally, Figure 11 The protrusion 32L shown on the right is the lower-height protrusion among the plurality of protrusions 32, with a height of h2 (<h1). Furthermore, protrusion 32H corresponds to the first protrusion, and protrusion 32L corresponds to the second protrusion.

[0159] Thus, by the presence of the convex portions 32 that differ in height, the reflection condition of light changes, and thus a three-dimensional design that differs in depth more can be formed.

[0160] Further, it is desirable that the convex portions 32 be present in the Figure 7 In the present embodiment, the difference hs between the convex portion 32H and the convex portion 32L is smaller than the height (h2) of the convex portion 32L. That is, it is desirable that hs < h2.

[0161] Thus, the heights of the plurality of convex portions 32 differ less, and a high-quality impression can be left.

[0162] Further, it is desirable that the maximum height (for example, hi) of the convex portions 32 be less than 50 μm.

[0163] Thus, even if the user touches the convex portions 32 with his hand, the height of the convex portions 32 is not felt, and an impression of roughness can not be left.

[0164] Further, the sanitary napkin 1 is fixed to the packaging member 31 by means of the partition member 33, and the partition member 33 and the packaging member 31 are joined at the joint portion 38 by a hot melt adhesive (HMA). As explained in the fusion portion 36, by applying heat and stress after the convex portions 32 are formed, the convex portions 32 are easily made to disappear. Thus, in the packaging member 31, the number of convex portions 32 per unit area in a region overlapping the joint portion 38 in the thickness direction is less than the number of convex portions 32 per unit area in other regions.

[0165] Thus, the position at which the partition member 33 and the packaging member 31 are fixed (the position of the joint portion 38) can be easily recognized.

[0166] Further, as explained previously, the fusion portion 36 of the sealing portion 35 does not have the convex portions 32. Thus, when viewed from above, the number of convex portions 32 per unit area in a region (both end portions in the width direction of the packaging member 31) in which the sealing portion 35 is provided is less than the number of convex portions 32 per unit area in other regions.

[0167] Thus, the position of the sealing portion 35 can be easily recognized.

[0168] Further, an adhesive portion 37 that adheres the packaging member 31 in a folded state is provided in the vicinity of the opening of the individual packaging body 30. This adhesive portion 37 is also adhered by a hot melt adhesive (HMA), and thus, in the packaging member 31, the number of convex portions 32 per unit area in a region overlapping the adhesive portion 37 in the thickness direction is less than the number of convex portions 32 per unit area in other regions.

[0169] Thus, the position of the packaging member 31 after folding can be easily recognized. Figure 5A , Figure 5BThe opening position of the independent package 30 of the state of being opened.

[0170] In addition, in Figure 3 In a plan view, in the region between the pair of end portions in the width direction of the package 31 (between the pair of sealing portions 35), a convex portion 32 is formed in the region other than the adhesive portion 37 and the three joint portions 38. As is apparent from the figure, the total area of the plurality of convex portions 32 is larger than the area of the region in which no convex portion is formed (here, the adhesive portion 37 and the joint portions 38).

[0171] In this way, the region in which the convex portion 32 is formed is large, and thus, an impression of being three-dimensional and high quality can be left.

[0172] <Regarding the film thickness and the light transmittance>

[0173] It is desirable that the average thickness of the film (first film) constituting the package 31 be smaller than the average thickness of the base material 42 (second film) of the pouch 41 of the encapsulation body 40. Further, it is desirable that the average light transmittance of the base material 42 of the pouch 41 be smaller than the average light transmittance of the film of the package 31.

[0174] Further, the average thickness can be calculated by, for example, using a thickness gauge (for example, a dial gauge thickness meter manufactured by Ozaki Seimitsu Co., Ltd., or the like), measuring the thickness of the measurement target (here, the film) at a plurality of portions, and finding the average value. In addition, the average light transmittance can be calculated by, for example, in accordance with JIS K7136, using a haze meter (NDH-7000SP) manufactured by Nippon Denshoku Industries Co., Ltd., or the like, measuring the total light transmittance at a plurality of portions of the measurement target, and finding the average value.

[0175] Here, as described above, the printed region R1 and the non-printed region R2 are present in the package 31, and the light transmittance is different in the region R1 and the region R2 (the light transmittance of the region R1 < the light transmittance of the region R2). In the present embodiment, the average light transmittance of the package 31 is the average value including the region R1 and the region R2.

[0176] By housing the independent package 30 in the pouch 41 (base material 42) that is thicker than the package 31 and has a smaller light transmittance than the light transmittance of the package 31, the content is less likely to be known by others at the time of purchase of the sanitary napkin 1 or the like, and adverse effects on the sanitary napkin 1 are less likely to occur at the time of carrying. Further, at the time of use of the sanitary napkin 1 (at the time of taking out the independent package 30 from the encapsulation body 40), the package 31 is thin and has a high light transmittance, and thus, an impression of being high quality, thin, and not stuffy can be left.

[0177] In addition, it is desirable that the average light transmittance of the package 31 be larger than the average light transmittance of the backsheet 4 of the sanitary napkin 1.

[0178] By making the average light transmittance of the package 31 large, it is possible to leave an impression of high quality, thinness, and no stuffiness at the time of use of the sanitary napkin 1 (at the time of taking out the individual package 30 from the package body 40). In addition, by making the light transmittance of the backsheet 4 small, it is possible to leave an impression that the effect of taking in the excretion is high.

[0179] ==Other Embodiments==

[0180] The embodiments of the present application have been described above, but the above-described embodiments are for the purpose of making the understanding of the present application easy, and are not intended to limit the interpretation of the present application. In addition, it is needless to say that the present application can be changed and modified without departing from the gist thereof, and the present application includes equivalents thereof.

[0181] In the foregoing embodiment, the convex portion 32 is a hexagonal prism shape with a hexagonal bottom surface (flat surface shape), but is not limited thereto. For example, it can be a prism shape with a polygonal bottom surface other than a hexagon (for example, a pentagonal prism shape). In addition, the convex portion 32 can be a polygonal pyramid shape.

[0182] In addition, in the foregoing embodiment, one of the pair of cooling rollers 80a, 80b (the cooling roller 80a) is provided with the recessed portion 82, but the recessed portion 82 can be provided in both of the pair of cooling rollers 80a, 80b. In this case, the convex portion 32 is formed on both surfaces of the package 31. In this way, the convex portion 32 can be formed on both surfaces of the package 31. Figure 7 In addition, in the foregoing embodiment, one of the pair of cooling rollers 80a, 80b (the cooling roller 80a) is provided with the recessed portion 82, but the recessed portion 82 can be provided in both of the pair of cooling rollers 80a, 80b. In this case, the convex portion 32 is formed on both surfaces of the package 31. In this way, the convex portion 32 can be formed on both surfaces of the package 31.

Claims

1. An individual package of an absorbent article, characterized by comprising: an absorbent article including an absorbent body; and a package member individually packaging the absorbent article, the absorbent article and the package member are folded, a pair of end portions of the package member are provided with sealing portions for sealing the end portions, in the package member, at least a region between the pair of end portions has a plurality of protrusions protruding outward when viewed from above, the protrusions are in a shape of a pyramid or a truncated pyramid, the protrusions are arranged at predetermined intervals between the pair of end portions of the package member.

2. The individual package of an absorbent article according to claim 1, characterized by comprising: the package member has a first film, the individual package is housed in a bag having a second film, the average thickness of the first film is smaller than the average thickness of the second film, the average light transmittance of the second film is smaller than the average light transmittance of the first film.

3. The individual package of an absorbent article according to claim 1, characterized by comprising: the package member has a first film, the individual package is housed in a bag having a second film, the average thickness of the first film is smaller than the average thickness of the second film, the average light transmittance of the second film is smaller than the average light transmittance of the first film, the absorbent article has a back sheet on a non-skin side of the absorbent body, the average light transmittance of the first film is larger than the average light transmittance of the back sheet.

4. The individual package of an absorbent article according to claim 1, characterized by comprising: the package member has a first film, the individual package is housed in a bag having a second film, the average thickness of the first film is smaller than the average thickness of the second film, the average light transmittance of the second film is smaller than the average light transmittance of the first film, the absorbent article has a back sheet on a non-skin side of the absorbent body, and the average light transmittance of the first film is larger than the average light transmittance of the back sheet, the sealing portions have a plurality of fusion portions, the area of the protrusions is smaller than the area of the fusion portions when viewed from above.

5. The individual package of an absorbent article according to claim 1, characterized by comprising: the package member has a first film, the individual package is housed in a bag having a second film, the average thickness of the first film is smaller than the average thickness of the second film, the average light transmittance of the second film is smaller than the average light transmittance of the first film, the absorbent article has a back sheet on a non-skin side of the absorbent body, the average light transmittance of the first film is larger than the average light transmittance of the back sheet, the sealing portions have a plurality of fusion portions, the area of the protrusions is smaller than the area of the fusion portions when viewed from above, the protrusions are present between adjacent fusion portions, and the protrusions are not present in the fusion portions.

6. The individual package of an absorbent article according to claim 1, characterized by comprising: the package member has a first film, the individual package is housed in a bag having a second film, the average thickness of the first film is smaller than the average thickness of the second film, the average light transmittance of the second film is smaller than the average light transmittance of the first film, ​ ​ ​ ​ ​ ​ The absorbent article has a back sheet on a non-skin side of the absorbent body, The average light transmittance of the first film is greater than the average light transmittance of the back sheet, The sealing portion has a plurality of welded portions, The area of the protruding portion is smaller than the area of the welded portion when viewed from above, The plurality of protruding portions include first protruding portions and second protruding portions that differ in height, 7. The individual package of the absorbent article according to claim 1, wherein The package has a first film, The individual package is housed in a pouch having a second film, The average thickness of the first film is smaller than the average thickness of the second film, The average light transmittance of the second film is smaller than the average light transmittance of the first film, The absorbent article has a back sheet on a non-skin side of the absorbent body, The average light transmittance of the first film is greater than the average light transmittance of the back sheet, The sealing portion has a plurality of welded portions, The area of the protruding portion is smaller than the area of the welded portion when viewed from above, The plurality of protruding portions include first protruding portions and second protruding portions that differ in height, The first protruding portions are higher than the second protruding portions, The height difference between the first protruding portions and the second protruding portions is smaller than the height of the second protruding portions.

8. The individual package of the absorbent article according to claim 1, wherein The package has a first film, The individual package is housed in a pouch having a second film, The average thickness of the first film is smaller than the average thickness of the second film, The average light transmittance of the second film is smaller than the average light transmittance of the first film, The absorbent article has a back sheet on a non-skin side of the absorbent body, The average light transmittance of the first film is greater than the average light transmittance of the back sheet, The sealing portion has a plurality of welded portions, The area of the protruding portion is smaller than the area of the welded portion when viewed from above, The plurality of protruding portions include first protruding portions and second protruding portions that differ in height, The first protruding portions are higher than the second protruding portions, The height difference between the first protruding portions and the second protruding portions is smaller than the height of the second protruding portions, The maximum height of the plurality of protruding portions is less than 50 μm.

9. The individual package of the absorbent article according to claim 1, wherein The package has a first film, The individual package is housed in a pouch having a second film, The average thickness of the first film is smaller than the average thickness of the second film, The average light transmittance of the second film is smaller than the average light transmittance of the first film, The absorbent article has a back sheet on a non-skin side of the absorbent body, The average light transmittance of the first film is greater than the average light transmittance of the back sheet, The sealing portion has a plurality of welded portions, The area of the protruding portion is smaller than the area of the welded portion when viewed from above, The plurality of protruding portions include first protruding portions and second protruding portions that differ in height, The first protrusions are higher than the second protrusions, The height difference between the first protrusions and the second protrusions is smaller than the height of the second protrusions, and the maximum height of the plurality of protrusions is less than 50 μm, The absorbent article is fixed to the package by means of a partition, In the package, the number of protrusions per unit area in a region overlapping the joint between the partition and the package in the thickness direction is less than the number of protrusions per unit area in other regions.

10. The individual package of an absorbent article according to claim 1, wherein The package has a first film, The individual package is housed in a pouch having a second film, The average thickness of the first film is smaller than the average thickness of the second film, The average light transmittance of the second film is smaller than the average light transmittance of the first film, The absorbent article has a back sheet on the non-skin side of the absorbent body, The average light transmittance of the first film is greater than the average light transmittance of the back sheet, The seal portion has a plurality of fusion portions, In plan view, the area of the protrusions is smaller than the area of the fusion portions, The protrusions are present between adjacent fusion portions, and the protrusions are not present in the fusion portions, The plurality of protrusions include first protrusions and second protrusions that differ in height, The first protrusions are higher than the second protrusions, The height difference between the first protrusions and the second protrusions is smaller than the height of the second protrusions, The maximum height of the plurality of protrusions is less than 50 μm, The absorbent article is fixed to the package by means of a partition, In the package, the number of protrusions per unit area in a region overlapping the joint between the partition and the package in the thickness direction is less than the number of protrusions per unit area in other regions. In plan view, the number of protrusions per unit area in a region provided with the seal portion is less than the number of protrusions per unit area in other regions.

11. The individual package of an absorbent article according to claim 1, wherein The package has a first film, The individual package is housed in a pouch having a second film, The average thickness of the first film is smaller than the average thickness of the second film, The average light transmittance of the second film is smaller than the average light transmittance of the first film, The absorbent article has a back sheet on the non-skin side of the absorbent body, The average light transmittance of the first film is greater than the average light transmittance of the back sheet, The seal portion has a plurality of fusion portions, In plan view, the area of the protrusions is smaller than the area of the fusion portions, The protrusions are present between adjacent fusion portions, and the protrusions are not present in the fusion portions, The plurality of protrusions include first protrusions and second protrusions that differ in height, The first protrusions are higher than the second protrusions, The height difference between the first protrusions and the second protrusions is smaller than the height of the second protrusions, The maximum height of the plurality of protrusions is less than 50 μm, The absorbent article is fixed to the package by means of a partition, In the package, the number of the protrusions per unit area in a region overlapping with a joint between the partition and the package in the thickness direction is less than the number of the protrusions per unit area in other regions, In plan view, the number of the protrusions per unit area in a region provided with the seal portion is less than the number of the protrusions per unit area in other regions, An adhesive portion is provided near the opening of the individual package, and the adhesive portion adheres the package in a folded state, In the package, the number of the protrusions per unit area in a region overlapping with the adhesive portion in the thickness direction is less than the number of the protrusions per unit area in other regions.

12. The individual package of the absorbent article according to claim 1, wherein The package has a first film, The individual package is housed in a bag having a second film, The average thickness of the first film is less than the average thickness of the second film, The average light transmittance of the second film is less than the average light transmittance of the first film, The absorbent article has a back sheet on a non-skin side of the absorbent body, The average light transmittance of the first film is greater than the average light transmittance of the back sheet, The seal portion has a plurality of fusion portions, In plan view, the area of the protrusion is less than the area of the fusion portion, The protrusion is present between adjacent fusion portions, and the fusion portion is present without the protrusion, The plurality of protrusions includes first protrusions and second protrusions that differ in height, The first protrusions are higher than the second protrusions, The difference in height between the first protrusions and the second protrusions is less than the height of the second protrusions, The maximum height of the plurality of protrusions is less than 50 μm, The absorbent article is fixed to the package by a partition, In the package, the number of the protrusions per unit area in a region overlapping with a joint between the partition and the package in the thickness direction is less than the number of the protrusions per unit area in other regions, In plan view, the number of the protrusions per unit area in a region provided with the seal portion is less than the number of the protrusions per unit area in other regions, An adhesive portion is provided near the opening of the individual package, and the adhesive portion adheres the package in a folded state, In the package, the number of the protrusions per unit area in a region overlapping with the adhesive portion in the thickness direction is less than the number of the protrusions per unit area in other regions. In plan view, and in a region between the pair of end portions, the total area of the plurality of protrusions is greater than the area of a region in which the protrusions are not formed.

Images