Worn article and method for manufacturing worn article
The absorbent article uses semi-hydrophilic or hydrophobic materials on the skin side of its ends to prevent leakage, addressing the issue of fluid egress from hydrophilic topsheets and enhancing wearer comfort.
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2023-01-24
- Publication Date
- 2026-03-04
AI Technical Summary
Hydrophilic topsheets in absorbent articles can lead to bodily fluids leaking from the front or rear ends, causing discomfort to the wearer.
The absorbent article features a semi-hydrophilic or hydrophobic material on the skin side of the ends, preventing fluid movement and leakage by using a waistband member connected to the absorbent article at least one of its ends, with a hydrophobic backsheet and a semi-hydrophilic or hydrophobic material on the skin side of the ends.
Prevents bodily fluids from leaking out of the absorbent article by using semi-hydrophilic or hydrophobic materials on the skin side of the ends, ensuring effective fluid containment and comfort.
Smart Images

Figure 2026034878000001_ABST
Abstract
Description
[Technical Field]
[0001] The present invention relates to a worn article and a method for manufacturing the worn article. [Background technology]
[0002] Conventionally, there have been known worn articles having an absorbent article placed between the crotch of a wearer, such as that disclosed in Patent Document 1 (JP 2010-279712 A). The worn article includes a hydrophilic topsheet facing the wearer's skin, a hydrophobic backsheet, and an absorbent core placed between the topsheet and the backsheet.
[0003] In such a wearing article, the top sheet facing the wearer's skin is hydrophilic, so that the wearer's body fluids such as urine pass through the top sheet and are absorbed into the absorbent core. [Prior art documents] [Patent documents]
[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2010-279712 Summary of the Invention [Problem to be solved by the invention]
[0005] However, if the top sheet is hydrophilic, bodily fluids may leak from the front or rear end of the absorbent article, which may cause discomfort to the wearer. [Means for solving the problem]
[0006] The wearing article of the present invention comprises a waistband member and an absorbent article that is placed between the crotch of a wearer when worn. The waistband member is placed around the waist of the wearer when worn. The absorbent article extends in a first direction between a first end that is placed on the front torso side of the wearer when worn and a second end that is placed on the rear torso side of the wearer when worn. The absorbent article is connected to the waistband member at at least one of the first end and the second end. The absorbent article includes a front sheet group, a hydrophobic back sheet, and an absorbent core. The front sheet group is placed on the skin side of the wearer when worn and extends between the front and rear torso sides of the wearer when worn. The back sheet extends between the front and rear torso sides of the wearer when worn. The absorbent core is placed between the front sheet group and the back sheet. A semi-hydrophilic or hydrophobic material is placed on the skin side of the first end, which is the end on the first end side or the end on the second end side of the absorbent article. [Effects of the Invention]
[0007] In the wearable article of the present invention, a semi-hydrophilic or hydrophobic material, rather than a hydrophilic material, is placed on the skin side of at least one of the ends of the absorbent article, thereby preventing body fluids from moving to the end (first end or second end) of the absorbent article and leaking out from the end of the absorbent article. [Brief explanation of the drawings]
[0008] [Figure 1] 1 is a front view showing a refastenable wearing article according to one embodiment of the wearing article of the present invention in a worn state. [Figure 2] 2 is a rear view of the worn article of FIG. 1, showing the state when worn. FIG. [Figure 3] 2 is a development view of the worn article of FIG. 1 in an unfolded state. FIG. [Figure 4] FIG. 2 is an exploded perspective view of the wearing article of FIG. [Figure 5] 2 is a schematic view of a manufacturing apparatus for the worn article of FIG. 1. FIG. [Figure 6] 1 is a schematic development view of a wearing article according to a first embodiment of the present invention. [Figure 7]FIG. 7 is a schematic cross-sectional view taken along the line VII-VII in FIG. 6. [Figure 8] FIG. 8 is a schematic cross-sectional view taken along the line VIII-VIII in FIG. 6. [Figure 9] FIG. 7 is a schematic cross-sectional view taken along the line IX-IX in FIG. 6. [Figure 10] FIG. 3 is a schematic development view of another example of the wearing article according to the first embodiment of the present invention. [Figure 11] FIG. 4 is a schematic development view of a wearing article according to a second embodiment of the present invention. [Figure 12] FIG. 12 is a schematic cross-sectional view taken along the line XI-XI in FIG. [Figure 13] FIG. 10 is a schematic development view of a wearing article according to a third embodiment of the present invention. [Figure 14] FIG. 10 is a schematic development view of a wearing article according to a fourth embodiment of the present invention. [Figure 15] FIG. 10 is a development view of a wearing article according to Modification B of the present invention. [Figure 16] 1 is a schematic view of a manufacturing apparatus for a wearing article, particularly a front sheet group, according to a first embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION
[0009] Hereinafter, an embodiment of the wearing article of the present invention and a method for manufacturing the wearing article of the present invention will be described with reference to the drawings.
[0010] It should be noted that the embodiment described below is merely an example of the present invention and does not limit the scope of the present invention. Those skilled in the art will understand that various modifications can be made to the following embodiment without departing from the spirit and scope of the present invention as defined in the claims.
[0011] First Embodiment (1) Overview of wearable items An overview of a wearing article 1 according to a first embodiment of the present invention will be described with reference to Figs. 1 to 4. Fig. 1 is a front view of a refastenable wearing article 1 according to a first embodiment of the present invention, showing the state when worn. Fig. 2 is a back view of the wearing article 1, showing the state when worn. Fig. 3 is a development view of the wearing article 1, showing the wearing article 1 in an unfolded state. Fig. 4 is an exploded perspective view of the wearing article 1.
[0012] In this chapter, we will briefly outline the structure and configuration of the wearing article 1, and the structure and configuration of the absorbent article, which is a main feature of the present invention, will be described later. Note that the wearing article 1 of the first embodiment has a structure and configuration similar to that of the wearing article disclosed in Patent Document 1 (Japanese Patent No. 6903810). Therefore, a detailed description of the wearing article 1 will be omitted here unless specifically necessary.
[0013] In the following description, the terms waist direction and orthogonal waist direction may be used to explain directions and positions. The waist direction refers to the direction that runs along the waist of the wearer when the wearing article 1 is worn by the wearer. The orthogonal waist direction refers to the direction that runs perpendicular to the waist direction and runs along the body length direction (height direction) of the wearer when the wearing article 1 is worn by the wearer.
[0014] As shown in Figures 1 to 4, the refastenable wearing article 1 according to the first embodiment mainly comprises a waistband member 10 that is placed around the waist of the wearer, and an absorbent article 20 that is placed from the rear of the wearer through the crotch area to the front of the abdomen.
[0015] As shown in FIG. 3, the waistband member 10 has a waistband main body 16 that is placed around the waist of the wearer, and a male fastener 12 attached to the waistband main body 16.
[0016] The waistline body 16 is a member that is worn around the waist of the wearer and is stretchable in the waist direction. As shown in Figure 4, the waistline body 16 mainly includes an inner sheet 14, an outer sheet 15, and an elastic member 11 disposed between the inner sheet 14 and the outer sheet 15.
[0017] The inner sheet 14 is, for example, a sheet piece of nonwoven fabric. The inner sheet 14 is a belt-shaped member extending in the waist direction. The inner sheet 14 has an inner surface 16i of the waistline main body 16 that faces the skin of the wearer when the wearing article 1 is worn by the wearer (see FIG. 4). An absorbent body joining portion 10b to which one end of the absorbent article 20 is joined is provided in the center of the inner sheet 14 in the waist direction (see FIG. 3). Furthermore, male fastener joining portions 10d to which male fasteners 12 are joined are provided at both ends of the inner sheet 14 in the waist direction (see FIG. 3).
[0018] The outer sheet 15 is, for example, a nonwoven sheet piece. The outer sheet 15 is a belt-shaped member extending in the waist direction of the wearing article 1. The outer sheet 15 is disposed on the opposite side to the inner surface 16i of the waist-circumference main body 16, and has an outer surface 16o of the waist-circumference main body 16 that faces outward (away from the wearer's skin) when the wearing article 1 is worn by a wearer (see FIG. 4).
[0019] As shown in FIG. 4, the elastic members 11 are disposed between the inner sheet 14 and the outer sheet 15 and have elasticity that expands and contracts in the waist direction. In the manufactured wearing article 1, a restoring force acts on the elastic members 11 in a direction that causes the elastic members 11 to contract in the waist direction. Since the waist body 16 has the elastic members 11, when a wearer puts on the wearing article 1, the restoring force of the elastic members 11 allows the waist body 16 to fit closely to the wearer's waist. The elastic members 11 are made of, for example, polyurethane, natural rubber, thermoplastic resin, or other material. Although not limited thereto, the elastic members 11 in the wearing article 1 are thread-like elastic members. In the wearing article 1, a plurality of thread-like elastic members 11 extending in the waist direction are disposed between the inner sheet 14 and the outer sheet 15 (see FIGS. 1 to 4).
[0020] As shown in Fig. 4, the elastic members 11 are arranged in a region facing the inner sheet 14, excluding absorber joining portions 10b and end portions 10c of the waistline main body 16, which will be described later. At the absorber joining portions 10b and end portions 10c of the waistline main body 16, which will be described later, the elastic members 11 are cut by a weakening treatment during the manufacturing process of the wearing article 1, as shown in Figs. 3 and 4.
[0021] The waistline body 16, in which the inner sheet 14, outer sheet 15, and elastic member 11 are integrated, includes an absorbent body joint portion 10b and two side portions 10a arranged on either side of the absorbent body joint portion 10b in the waistline direction of the wearer, as shown in Figure 3.
[0022] The absorbent article 20 is a member for absorbing body fluids such as urine. The absorbent article 20 mainly includes an absorbent core 50, a front sheet group 30, a back sheet group 40, a female fastener 46, side gathers 70, and three-dimensional gathers 80.
[0023] The absorbent core 50 includes a nonwoven fabric carrying a highly absorbent polymer, and has the function of absorbing body fluids such as urine.
[0024] The front sheet group 30 is a member provided on the wearer's skin side of the absorbent core 50. The front sheet group 30 will be described later.
[0025] The backsheet group 40 is a sheet-like member provided on the side of the absorbent core 50 opposite the wearer's skin side (outer surface side) so as to sandwich the absorbent core 50 between the backsheet group 40 and the frontsheet group 30. The absorbent core 50 is disposed in the center of the backsheet group 40. The backsheet group 40 includes a liquid-impermeable (hydrophobic) backsheet 42, which is a nonwoven fabric made of polypropylene, polyethylene, or the like, and an exterior sheet 44 that covers the exterior of the backsheet 42. The backsheet 42 is a water-repellent sheet-like member that inhibits the passage of body fluids such as urine. The exterior sheet 44 is a hydrophilic (liquid-permeable) sheet-like member. A female fastener 46 is provided on the surface of the exterior sheet 44 opposite the wearer's skin side, which functions as a hook-and-loop fastener when used in combination with the male fastener 12 of the waistband main body 16.
[0026] The side gathers 70 are elastic members that are arranged at positions corresponding to the base of the legs when the wearer wears the wearing article 1. When the wearing article 1 is laid out as shown in Fig. 3, the side gathers 70 are provided along both edges of the back sheet 42 in the waist direction, and over substantially the entire back sheet 42 in the direction perpendicular to the waist direction.
[0027] As shown in Fig. 4, the three-dimensional gathers 80 are provided on the skin-facing surface of the front sheet group 30. When the wearing article 1 is worn by a wearer, the three-dimensional gathers 80 elastically fit closely to the back, crotch, front abdomen, etc. of the wearer, and prevent body fluids such as urine from leaking out of the wearing article 1.
[0028] As shown in Figures 3 and 4, the absorbent article 20 is joined to the absorber joint part 10b of the waistline main body 16. When the wearing article 1 is unfolded (before being assembled for wearing), the absorbent article 20 extends from the absorber joint part 10b in a direction perpendicular to the waistline, away from the waistline main body 16, as shown in Figure 3. When a wearer puts on the wearing article 1, the absorbent article 20 is placed from the wearer's back region through the crotch area to the front abdomen. The aforementioned female fastener 46 is attached to the end of the absorbent article 20 distal to the absorber joint part 10b in the waistline perpendicular direction, on the outer surface that faces away from the wearer when the wearer puts on the wearing article 1.
[0029] In the assembled state of the wearing article 1 (at the stage when the wearing article is used), the absorbent article 20 is folded back so that the front sheet group 30 is disposed on the inside, and further, the surface of at least the end 10c of the side portion 10a of the waistline body 16 on which the male fastener 12 is disposed is deformed so that it overlaps with the exterior sheet 44 of the back sheet 42 of the absorbent article 20. Then, as shown in Figs. 1 and 2, the male fastener 12 of the waistline body 16 is engaged with the female fastener 46 attached to the exterior sheet 44 of the absorbent article 20. A wearer of the wearing article 1 pushes open the waistline member 10 of the refastenable wearing article 1 assembled into a pants-like shape with the male fastener 12 and the female fastener 46 engaged, and puts on the wearing article 1 like pants by inserting their legs into the waistline member 10.
[0030] (2) Overview of manufacturing equipment and manufacturing method for wearable articles The manufacturing apparatus 1000 and manufacturing method for the worn article 1 will be outlined with reference to FIG.
[0031] The manufacturing device 300 for the front sheet group 30, which is a characteristic feature of the wearing article 1 of the present invention, will be described later.
[0032] The manufacturing apparatus 1000 for the worn article 1 and the manufacturing method for the worn article 1 are similar in many respects to the manufacturing apparatus and method for the worn article disclosed in Patent Document 1 (Japanese Patent No. 6903810). Therefore, the manufacturing apparatus 1000 for the worn article 1 and the manufacturing method for the worn article 1 will be briefly described here, and detailed description will be omitted unless particularly necessary. In the following description, the conveying direction of a sheet or the like in each process will be referred to as the MD direction, and the direction perpendicular to this will be referred to as the CD direction.
[0033] <Process P1> In step P1, as shown in Fig. 5, a continuous sheet 115 made up of a plurality of continuous outer sheets 15 is conveyed in the MD direction, and continuous stretched elastic members 11 are arranged linearly along the MD direction on the continuous sheet 115. A plurality of continuous elastic members 11 are arranged at intervals from one another in the direction perpendicular to the waistline (CD direction) on the continuous sheet 115. Also, in step P1, as shown in Fig. 5, a continuous sheet 114 (an example of a first sheet) made up of a plurality of continuous inner sheets 14 is conveyed in the MD direction, and the continuous sheet 114 is arranged on the continuous sheet 115 so as to cover the elastic members 11 from above.
[0034] In this way, when the elastic member 11 is placed in a stretched state between the continuum 115 and the continuum 114, the forming device 400 bonds the elastic member 11 to at least one of the continuum 115 and the continuum 114. The bonding method may be ultrasonic welding or heat sealing. Hereinafter, the continuum in which the continuum 114, the elastic member 11, and the continuum 115 are layered and bonded together will be referred to as the stretch sheet continuum 116.
[0035] <Process P2> In step P2, a weakening treatment is applied to the elastic members 11 at positions on the continuous stretch sheet web 116 that correspond to the absorbent body joint portion 10b where the absorbent article 20 is disposed and the male fastener joint portion 10d where the male fastener 12 is disposed. The weakening treatment here is a process in which the elastic members 11 of the continuous stretch sheet web 116 are cut using a cutting device 500. The cutting device 500 may be a gather cutter that uses a blade to cut the elastic members 11, or an embossing roll (heat embossing) device that applies heat to melt and cut the elastic members 11.
[0036] <Process P3~Process P7> Steps P3 to P7 are an example of a process for manufacturing the absorbent article 20.
[0037] In step P3, a topsheet work in progress is formed by combining a continuum S30 of front sheet groups 30, in which a plurality of front sheet groups 30 are continuous, with a continuum S80 of three-dimensional gathers 80, in which a plurality of three-dimensional gathers 80 are continuous.
[0038] In step P4, a continuous body S50 of absorbent cores 50 is formed by connecting a plurality of absorbent cores 50, and the absorbent core 50 is manufactured using the continuous body of absorbent cores 50.
[0039] In step P5, the continuous body S40 of the backsheet 42 and the continuous body S70 of the side gathers 70 are joined together to form a backsheet work-in-progress.
[0040] In process P6, the top sheet work-in-process formed in process P3, the absorbent core 50 formed in process P4, and the back sheet work-in-process formed in process P5 are combined to form an absorbent body work-in-process. S20 is formed.
[0041] In step P7, the absorbent work-in-progress S20 formed in step P6 is cut to produce individual absorbent articles 20.
[0042] <Process P8~Process P11> Steps P8 to P11 are an example of steps for assembling the wearing article 1.
[0043] In step P8, one end (the end opposite the female fastener 46) of the absorbent article 20 produced in step P7 and inverted 90 degrees is placed on the absorber joint portion 10b of each waistline body 16 in the continuous stretch sheet 116 produced in step P2. The absorbent article 20 is joined to the inner surface 16i of each waistline body 16 at a position corresponding to the absorber joint portion 10b. The joining method may be adhesion using a hot melt adhesive, thermal welding using a heat sealing device, or ultrasonic welding using an ultrasonic welding device.
[0044] In step P9, a portion of the continuous body 115 of the outer sheet 15 of the continuous stretch sheet 116 where no elastic member 11 is disposed and which is not covered by the continuous body 114 of the inner sheet 14 (referred to as an extension portion 15c, see FIG. 4) is folded back. The extension portion 15c is then joined to each absorbent article 20 while covering the end portion above the absorber joint portion 10b of each absorbent article 20 (the end portion joined to the continuous stretch sheet 116). Also in step P9, male fasteners 12 are joined to the portions of each waistline body 16 corresponding to the male fastener joint portion 10d. The joining method here may be adhesion using a hot melt adhesive, welding by heat sealing, or ultrasonic welding.
[0045] In step P10, the absorbent article 20 is folded in half in the CD direction by the folding device 600.
[0046] In step P11, the continuous stretch sheet 116 is cut in the CD direction by a cutter 700 at a position midway between adjacent absorbent articles 20 in the MD direction and at a midway point in the MD direction between the male fasteners 12. As a result, the continuous stretch sheet 116 and the plurality of absorbent articles 20 are separated into each waistline body 16 and each absorbent article 20 joined thereto.
[0047] In step P12, the side portions 10a arranged on both sides in the MD direction of the waist member 10 are folded back toward the absorber joining portions 10b of the waist member 10 so that the male fasteners 12 on both end portions 10c face the outer surface of the absorbent article 20. Next, the male fasteners 12 of the waist member 10 and the female fasteners 46 of the absorbent article 20 are engaged with each other.
[0048] (3) Absorbent articles for wear The absorbent article 20, which is a feature of the wearing article 1 of the first embodiment, will be described in detail with reference to Figures 6 to 9, focusing particularly on the front sheet group 30, which is the main feature. Note that, for ease of understanding, the side gathers 70 and the three-dimensional gathers 80 of the absorbent article 20 will not be mentioned here.
[0049] Fig. 6 is a schematic development view of the wearing article 1, which is a simplified view of Fig. 3. Fig. 7 is a schematic cross-sectional view taken along the line VII-VII in Fig. 6. Fig. 8 is a schematic cross-sectional view taken along the line VIII-VIII in Fig. 6. Fig. 9 is a schematic cross-sectional view taken along the line IX-IX in Fig. 6.
[0050] As described above, the wearing article 1 includes the waist member 10 that is placed around the waist of the wearer when worn, and the absorbent article 20 that is placed between the crotch of the wearer when worn.
[0051] The absorbent article 20 extends in a first direction D1 between a first end 22 that is located toward the front torso when worn and a second end 24 that is located toward the back torso of the wearer when worn. The absorbent article 20 is connected to the waist member 10 at least one of the first end 22 side and the second end 24 side. In the present wearing article 1, the absorbent article 20 is connected to the waist member 10 at the second end 24 side.
[0052] As described above, the absorbent article 20 mainly includes a front sheet group 30, a back sheet group 40 including a hydrophobic back sheet 42, and an absorbent core 50 disposed between the front sheet group 30 and the back sheet group 40. When worn, the front sheet group 30 is disposed against the skin of the wearer and extends between the front and rear torso sides of the wearer. When worn, the hydrophobic back sheet 42 of the back sheet group 40 extends between the front and rear torso sides of the wearer. The absorbent core 50 (the portion indicated by dotted hatching in FIG. 6 ) is disposed in the center of the back sheet 42 and the front sheet group 30 in a first direction D1 and a second direction D2 perpendicular to the first direction D1.
[0053] The absorbent article 20 of the wearing article 1 is characterized in that no hydrophilic material is disposed in the portions of the end portion on the first end 22 side and the end portion on the second end 24 side that face the wearer's skin. In other words, the absorbent article 20 is characterized in that a semi-hydrophilic or hydrophobic material is disposed in the portions of the end portion 22a on the first end 22 side and the end portion 24a on the second end 24 side that face the wearer's skin.
[0054] The end 22a is a region within a predetermined length L1 from the first end 22 in the first direction D1 (see FIG. 6). The end 24a is a region within a predetermined length L2 from the second end 24 in the first direction D1 (see FIG. 6). The lengths L1 and L2 are preferably 30 mm or more and 80 mm or less. The lengths L1 and L2 are more preferably 45 mm or more and 70 mm or less. By setting the lengths L1 and L2 within the above numerical ranges, leakage (exudation) of the wearer's bodily fluid discharged into the absorbent article 20 from the first end 22 and the second end 24 is more likely to be suppressed. On the other hand, by setting the lengths L1 and L2 within the above numerical ranges, the wearer's bodily fluid discharged into the absorbent article 20 can be smoothly guided to the absorbent core 50. Here, the length L1 of the end 22a in the first direction D1 and the length L2 of the end 24a in the first direction D1 are the same. However, the present invention is not limited to this, and the length L1 and the length L2 may have different values.
[0055] Here, hydrophilic, semi-hydrophilic, and hydrophobic are defined by the liquid strike-through time (liquid penetration rate [seconds]) measured using the method specified in ISO 9073-8:1995 (Textiles - Test methods for nonwovens - Part 8: Determination of liquid strike-through time (simulated urine) liquid strike-through time). Specifically, materials with a liquid penetration rate of less than 1 second are referred to as hydrophilic (liquid-permeable) materials, materials with a liquid penetration rate of 1 second or more but less than 10 seconds are referred to as semi-hydrophilic materials, and materials with a liquid penetration rate of 10 seconds or more are referred to as hydrophobic (liquid-impermeable) materials.
[0056] The absorbent article 20 of the wearing article 1 employs the following structure as a means for placing a semi-hydrophilic or hydrophobic material on the wearer's skin side of the end portions 22a and 24a of the absorbent article 20.
[0057] The front sheet group 30 of the absorbent article 20 includes multiple sheets that make up the front sheet group 30. Specifically, the front sheet group 30 includes a top sheet 32 and a second sheet 34. The top sheet 32 and the second sheet 34 are layered in this order when viewed from the wearer's skin side. In other words, the second sheet 34 is disposed between the top sheet 32 and the back sheet 42 of the back sheet group 40. The top sheet 32 is a hydrophilic nonwoven fabric sheet. The second sheet 34 is a semi-hydrophilic nonwoven fabric sheet.
[0058] In the wearing article 1, the back sheet 42 of the back sheet group 40 and the second sheet 34 of the front sheet group 30 are the same size in the first direction D1 and the second direction D2 perpendicular to the first direction D1. In contrast, the top sheet 32 (the portion hatched with diagonal lines in FIG. 6) is shorter than the second sheet 34 in the first direction D1. The end of the top sheet 32 on the first end 22 side of the absorbent article 20 is disposed inward (toward the second end 24) from the first end 22 of the absorbent article 20 by a length L1 in the first direction D1. The end of the top sheet 32 on the second end 24 side of the absorbent article 20 is disposed inward (toward the first end 22) from the second end 24 of the absorbent article 20 by a length L2 in the first direction D1.
[0059] As a result of this configuration, a semi-hydrophilic second sheet 34 is placed on the wearer's skin side of the end 22a of the first end 22 and the end 24a of the second end 24 of the absorbent article 20.
[0060] In this embodiment, the top sheet 32 (the portion hatched with diagonal lines in FIG. 6) is also shorter in the second direction D2 than the second sheet 34. As a result, the second sheet 34 is also disposed on the wearer's skin side of both end portions in the second direction of the absorbent article 20. However, this configuration is not essential.
[0061] As a result of employing such a configuration in the wearing article 1, when the absorbent article 20 is cut along the cross sections indicated by arrows VII-VII, VIII-VIII, and IX-IX in Fig. 6, the layered configurations are as shown in Figs. 7 to 9, respectively. In Figs. 7 to 9, for components other than the absorbent core 50, hydrophilic materials are depicted with dashed lines, semi-hydrophilic materials with dashed-dotted lines, and hydrophobic materials with solid lines. As mentioned above, the side gathers 70 and the three-dimensional gathers 80 are not shown or described here.
[0062] Figure 7 is a cross section of the absorbent article 20 taken along the second direction D2 at the center in the first direction D1 (where the absorbent core 50 is located). In the cross section shown in Figure 7, the top sheet 32, the second sheet 34, the absorbent core 50, the back sheet 42, and the exterior sheet 44 are layered in this order from the skin side to the outside.
[0063] Figure 8 is a cross section of the absorbent article 20 cut in the second direction D2 at a position in the first direction D1 away from the ends 22a, 24a and at a position where the absorbent core 50 is not present. In the cross section shown in Figure 8, the top sheet 32, second sheet 34, back sheet 42, and exterior sheet 44 are layered in this order from the skin side to the outside.
[0064] Figure 9 is a cross section of the absorbent article 20 cut at the end 22a in the second direction D2. In the cross section shown in Figure 9, the top sheet 32 is not present, and the second sheet 34, back sheet 42, and exterior sheet 44 are layered in this order from the skin side to the outside. Although not shown, the cross section of the absorbent article 20 cut at the end 24a in the second direction D2 is also similar to Figure 9.
[0065] (4) Manufacturing device and method for front sheet group of worn articles Among the manufacturing apparatuses and methods for manufacturing the wearing article 1, a particularly characteristic manufacturing apparatus 300 and method for manufacturing the front sheet group 30 will be described with reference to Fig. 16. Fig. 16 is a schematic diagram of the manufacturing apparatus 300 for the front sheet group 30.
[0066] As shown in FIG. 16, the manufacturing apparatus 300 mainly includes a cutter roll 310, a first anvil roll 320, a second anvil roll 330, and a horn 340.
[0067] The cutter roll 310 is a cylindrical roll provided with blades (not shown) arranged at predetermined intervals in the circumferential direction on its peripheral surface. The cutter roll 310 sandwiches a continuous absorbent first sheet S1 conveyed along the conveyance direction A1 between itself and a cylindrical first anvil roll 320, and cuts the first sheet S1 in a direction perpendicular to the conveyance direction A1 to form the top sheet 32.
[0068] The first anvil roll 320 sucks the top sheet 32 cut by the cutter roll 310 with its circumferential surface and transports it to the cylindrical second anvil roll 330. The top sheets 32 are arranged at predetermined intervals in the circumferential direction on the circumferential surface of the first anvil roll 320. In other words, the first anvil roll 320 transports the top sheets 32 at predetermined intervals in the circumferential direction.
[0069] The second anvil roll 330 also sucks the top sheet 32 conveyed by the first anvil roll 320 with its circumferential surface and conveys it to a position opposite the horn 340 of the ultrasonic bonding device. Note that the top sheet 32 is also arranged on the circumferential surface of the second anvil roll 330 with a predetermined gap between them in the circumferential direction.
[0070] A continuous semi-absorbent second sheet S2 is conveyed between the horn 340 and the second anvil roll 330. The continuous semi-absorbent second sheet S2 is cut in a direction perpendicular to the conveyance direction A2 in a subsequent process to become the second sheet 34. The first anvil roll 320 conveys top sheets 32 one after another between the horn 340 and the second anvil roll 330. The horn 340 joins the successively conveyed top sheets 32 to the second sheet S2 at an interval in the conveyance direction A2 of the second sheet S2.
[0071] The second sheet S2 is combined with the standing gathers 80 in the above-mentioned step P3 and with the backsheet work-in-progress in step P6, and is cut in step P7 to form the absorbent article 20 to be used in one wearing article 1.
[0072] (5) Features (5-1) The wearing article 1 of the first embodiment includes a waistband member 10 and an absorbent article 20. The waistband member 10 is placed around the waist of the wearer when worn. The absorbent article 20 extends in a first direction D1 between a first end 22 that is placed on the front torso side of the wearer when worn and a second end 24 that is placed on the rear torso side of the wearer when worn. At least one of the first end 22 side and the second end 24 side of the absorbent article 20 is connected to the waistband member. The absorbent article 20 is placed between the crotch of the wearer when worn. The absorbent article 20 includes a front sheet group 30, a hydrophobic back sheet 42, and an absorbent core 50. The front sheet group 30 is placed against the skin of the wearer when worn and extends between the front and rear torsos of the wearer when worn. The back sheet 42 extends between the front and rear torsos of the wearer when worn. The absorbent core 50 is disposed (in the thickness direction) between the front sheet group 30 and the back sheet 42. A semi-hydrophilic or hydrophobic (particularly here, semi-hydrophilic) material is disposed on the wearer's skin side of the end portion 22a on the first end 22 side and the end portion 24a on the second end 24 side of the absorbent article 20.
[0073] Although only the front sheet group 30, the back sheet 42 of the back sheet group 40, and the absorbent core 50 are described here as components of the absorbent article 20, other components may also be present. For example, other sheets may be disposed between the front sheet group 30 and the back sheet 42 of the back sheet group 40. However, it is preferable that no hydrophilic sheet is disposed on the wearer's skin side of the back sheet 42 at the end portions 22a and 24a of the absorbent article 20 of the wearing article 1 of the first embodiment.
[0074] Additionally, although the back sheet group 40 has been described herein as including the back sheet 42 and the exterior sheet 44, the back sheet group 40 may include only the back sheet 42. In short, the term "back sheet group 40" does not necessarily include multiple sheets, and may include only a single sheet (back sheet 42).
[0075] In the wearing article 1, a semi-hydrophilic material, rather than a hydrophilic material, is placed on the skin side of the end of the absorbent article 20, thereby preventing body fluids from moving to the ends of the absorbent article (first end 22 and second end 24) and leaking out from the ends of the absorbent article 20.
[0076] In the above description, a semi-hydrophilic or hydrophobic (particularly semi-hydrophilic here) material is disposed on the wearer's skin side of the end 22a on the first end 22 side and the end 24a on the second end 24 side of the absorbent article 20. However, it is not essential that a semi-hydrophilic or hydrophobic material be disposed on both the end 22a and the end 24a. In other words, a semi-hydrophilic or hydrophobic material may be disposed on the wearer's skin side of the first end of the absorbent article 20, i.e., the end 22a on the first end 22 side or the end 24a on the second end 24 side. For example, if bodily fluid leakage is likely to occur only at one of the first end 22 side and the second end 24 side of the absorbent article 20, a semi-hydrophilic or hydrophobic material may be disposed on the wearer's skin side of the end (first end) on that side. The same applies to other embodiments described below.
[0077] For example, in the wearing article 1 having the above structure, leakage of bodily fluids is unlikely to occur at the front torso side (the first end 22 side). In this case, as shown in FIG. 10 , a semi-hydrophilic or hydrophobic material may be disposed only at the end 24a, facing the skin side of the wearer. A top sheet 32 may be disposed at the end 24a. Note that, in the case of a wearing article having a structure that is unlikely to cause leakage of bodily fluids at the rear torso side (the second end 24 side), a semi-hydrophilic or hydrophobic material may be disposed only at the end 22a, facing the skin side of the wearer. Taking such cases into consideration, in the following description of the features of the wearing article 1, the expression "the end 22a at the first end 22 side and the end 24a at the second end 24 side" may be read as "the first end, which is the end 22a at the first end 22 side or the end 24a at the second end 24 side."
[0078] (5-2) In the wearing article 1, the front sheet group 30 includes a hydrophilic top sheet 32 and a semi-hydrophilic second sheet 34 disposed between the top sheet 32 and the back sheet 42. In the first direction D1, the top sheet 32 is shorter than the second sheet 34. The second sheet 34 is disposed on the wearer's skin side of the end 22a on the first end 22 side and the end 24a on the second end 24 side of the absorbent article 20. In other words, the hydrophilic top sheet 32 is not disposed on the end 22a on the first end 22 side and the end 24a on the second end 24 side of the absorbent article 20.
[0079] In the wearing article 1, a semi-hydrophilic material is arranged on the skin side of the longitudinal ends 22a, 24a of the absorbent article 20, thereby preventing body fluids from moving to the ends (first end 22 and second end 24) of the absorbent article 20 and leaking out from the ends of the absorbent article 20.
[0080] (5-3) In the worn article 1, the length L1 of the end 22a of the absorbent article 20 on the first end 22 side and the length L2 of the end of the absorbent article 20 on the second end 24 side in the first direction D1 are 30 mm or more and 90 mm or less.
[0081] In the wearing article 1, by setting the length L1 of the end 22a and the length L2 of the end 24a to 30 mm or more, leakage (exudation) of the wearer's body fluid discharged into the absorbent article 20 from the first end 22 and the second end 24 is likely to be suppressed. On the other hand, by setting the length L1 of the end 22a and the length L2 of the end 24a to 90 mm or less, the wearer's body fluid discharged into the absorbent article 20 can be smoothly guided to the absorbent core 50.
[0082] In addition, when only one of the end 22a or end 24a is provided, the length of the first end in the first direction D1, which is the end 22a on the first end 22 side of the absorbent article 20 or the end 24a on the second end 24 side (where the semi-hydrophilic or hydrophobic material is arranged), is 30 mm or more and 90 mm or less.
[0083] (5-4) The manufacturing process of the wearing article 1 includes a first step and a second step. In the first step, a continuous absorbent first sheet S1 is cut in a direction perpendicular to the conveying direction A1 to form a top sheet 32. In the second step, the successively formed top sheets 32 are joined to a continuous semi-absorbent second sheet S2 at intervals in the conveying direction A2 of the second sheet S2, which will be cut in a direction perpendicular to the conveying direction A2 in a subsequent step to form a second sheet 34.
[0084] Second Embodiment In the first embodiment, the length of the top sheet 32 in the first direction D1 is shorter than that of the second sheet 34, so that a semi-hydrophilic material is placed on the wearer's skin side of the end 22a on the first end 22 side and the end 24a on the second end 24 side of the absorbent article 20 of the worn article 1.
[0085] However, the wearing article of the present invention in which a semi-hydrophilic or hydrophobic material is arranged on the wearer's skin side of the first end portion that is positioned on the front torso side of the wearer when worn and the second end portion that is positioned on the back torso side of the wearer when worn can also be realized by the configuration and structure of the second embodiment described below.
[0086] A wearing article 1A of a second embodiment will be described with reference to Figs. 11 and 12. Fig. 11 is a schematic development view of the wearing article 1A. Fig. 12 is a schematic cross-sectional view taken along the line XI-XI in Fig. 11. In Fig. 12, hydrophilic materials are depicted with dashed lines, semi-hydrophilic materials with dashed-dotted lines, and hydrophobic materials with solid lines, except for the absorbent core 50 of Fig. 12. Note that, as in the detailed description of the absorbent article 20 of the first embodiment, the side gathers 70 and the three-dimensional gathers 80 are not shown or described here.
[0087] The wearing article 1A of the second embodiment is similar to the wearing article 1 of the first embodiment except for the front sheet group 30A of the absorbent article 20A, and therefore, unless otherwise necessary, explanations of parts other than the absorbent article 20A will be omitted here.
[0088] In the absorbent article 20A, the length of the top sheet 32 in the first direction D1 is the same as the length of the second sheet 34 in the first direction D1.
[0089] The front sheet group 30A of the absorbent article 20A includes a hydrophobic cover sheet 36 arranged at the end 22a on the first end 22 side, and a hydrophobic cover sheet 36 arranged at the end 24a on the second end 24 side. The cover sheet 36 is arranged closer to the skin than the top sheet 32, and is joined to the top sheet 32 and the second sheet 34. The cover sheet 36 is arranged in at least an area of length L1 from the first end 22 toward the second end 24 in the first direction D1. The cover sheet 36 is also arranged in at least an area of length L2 from the second end 24 toward the first end 22 in the first direction D1. The cover sheet 36 has a width at least equal to or greater than that of the top sheet 32 in the second direction D2, and covers the entire top sheet 32 at the end 22a and end 24a of the absorbent article 20A. The cover sheet 36 has the same width as the second sheet 34 in the second direction D2, and only the hydrophobic cover sheet 36 may be disposed at the end portions 22a and 24a of the absorbent article 20A. Note that the preferred numerical ranges for the lengths L1 and L2 here are the same as those in the first embodiment.
[0090] With this configuration, a semi-hydrophilic material (second sheet 34) or a hydrophobic material (cover sheet 36) is arranged on the wearer's skin side of the end portions 22a, 24a of the absorbent article 20A of the second embodiment. When the semi-hydrophilic second sheet 34 is arranged on the end portions 22a, 24a of the absorbent article 20A of the second embodiment, it is preferable that no hydrophilic sheet is arranged between the second sheet 34 and the back sheet 42.
[0091] The cover sheet 36 may be disposed only at the end 24a, as in the cover sheet 36 disposed at the end 24a in Fig. 11. Alternatively, as in the cover sheet 36 disposed at the end 22a in Fig. 11, the cover sheet 36 may extend further toward the second end 24 than the end 22a in the first direction D1 (arranged in a C-shape as depicted in Fig. 11), and cover the top sheet 32 and / or the second sheet 34 in areas other than the end 22a. -Features of the second embodiment- In the second embodiment of the wearing article 1A, the front sheet group 30A includes a hydrophilic top sheet 32 and a hydrophobic cover sheet 36 that is positioned on the wearer's skin side of the end 22a on the first end 22 side and the end 24a on the second end 24 side of the absorbent article 20A and covers the top sheet 32.
[0092] In the wearing article 1A, a hydrophobic material, or a hydrophobic material and a semi-hydrophilic material, is arranged on the skin side of the longitudinal ends 22a, 24a of the absorbent article 20A, thereby preventing body fluids from moving to the ends of the absorbent article (first end 22 and second end 24) and leaking out from the ends of the absorbent article 20.
[0093] As already explained in the first embodiment, even in the absorbent article 20A, a semi-hydrophilic or hydrophobic material may be placed on the wearer's skin side only at the first end of the end 22a on the first end 22 side or the end 24a on the second end 24 side, rather than at both the end 22a on the first end 22 side and the end 24a on the second end 24 side.
[0094] Also, for example, the front sheet group 30A may have only the top sheet 32 and the cover sheet 36, without the semi-hydrophilic second sheet 34.
[0095] <Third embodiment> In the second embodiment, a hydrophobic cover sheet 36 is disposed on the wearer's skin side of the end 22a on the first end 22 side and the end 24a on the second end 24 side of the absorbent article 20A of the wearing article 1.
[0096] However, the wearing article of the present invention in which a semi-hydrophilic or hydrophobic material is arranged on the wearer's skin side of the first end portion that is located on the front torso side of the wearer when worn and the second end portion that is located on the back torso side of the wearer when worn can also be realized by the configuration and structure of the third embodiment described below.
[0097] A wearing article 1B of a third embodiment will be described with reference to Fig. 13. Fig. 13 is a schematic development view of the wearing article 1B. Note that, similar to the detailed description of the absorbent article 20 of the first embodiment, the side gathers 70 and the three-dimensional gathers 80 are not shown or described here.
[0098] In the absorbent article of the wearing article 1B of the third embodiment, as in the absorbent article 20A of the wearing article 1A of the second embodiment, the length of the top sheet 32 in the first direction D1 is the same as the length of the second sheet 34 in the first direction D1. In other words, the top sheet 32 extends between the first end 22 of the absorbent article 20B and the second end 24 of the absorbent article 20B.
[0099] In the wearing article 1B of the third embodiment, unlike the wearing article 1A of the second embodiment, the front sheet group 30B does not have a cover sheet 36 arranged at the end 22a on the first end 22 side and the end 24a on the second end 24 side of the absorbent article 20B. Instead, the top sheet 32 is not hydrophilized at the end 22a on the first end 22 side and the end 24a on the second end 24 side of the absorbent article 20B. In other words, only the portions of the top sheet 32 that do not correspond to the end 22a and the end 24a are hydrophilized.
[0100] A hydrophilic nonwoven fabric sheet is produced by subjecting a hydrophobic nonwoven fabric sheet to a hydrophilic treatment, and therefore the portions of the top sheet 32 that have not been subjected to the hydrophilic treatment (portions corresponding to the ends 22a and 24a) are hydrophobic.
[0101] In FIG. 13, the area indicated by the reference numeral 32a, which is filled in black, is the part of the top sheet 32 that has not been subjected to the hydrophilization treatment.
[0102] The preferred ranges of the length L1 of the end 22a on the first end 22 side and the length L2 of the end 24a on the second end 24 side are the same as those in the first embodiment.
[0103] With this configuration, a semi-hydrophilic material (second sheet 34) and a hydrophobic material (portion of the top sheet 32 that has not been subjected to hydrophilization treatment) are arranged on the wearer's skin side of the end portions 22a, 24a of the absorbent article 20B of the third embodiment. Note that, in the end portions 22a, 24a of the absorbent article 20B of the third embodiment, it is preferable that no hydrophilic sheet is arranged between the second sheet 34 and the back sheet 42. -Features of the third embodiment- In the wearing article 1B of the third embodiment, the front sheet group 30B includes a hydrophilic top sheet 32 extending between the first end 22 of the absorbent article 20B and the second end 24 of the absorbent article 20B. The top sheet 32 is not subjected to a hydrophilic treatment at the end 22a on the first end 22 side and the end 24a on the second end 24 side of the absorbent article 20B.
[0104] By configuring the wearing article 1B in this manner, unlike the wearing article 1A, an additional hydrophobic sheet (cover sheet 36) is not used in the front sheet group 30B, but a hydrophobic material is placed at the ends 22a, 24a of the absorbent article 20B, thereby preventing body fluids from moving to the ends (first end 22 and second end 24) of the absorbent article and leaking out from the ends of the absorbent article 20B.
[0105] As already explained in the first embodiment, in the absorbent article 20B, a semi-hydrophilic or hydrophobic material may be placed on the wearer's skin side only at the first end of the end 22a on the first end 22 side or the end 24a on the second end 24 side, rather than at both the end 22a on the first end 22 side and the end 24a on the second end 24 side.
[0106] Also, for example, in the front sheet group 30B, the semi-hydrophilic second sheet 34 may be omitted and only the top sheet 32 may be provided.
[0107] <Fourth embodiment> In the first embodiment, the length of the top sheet 32 in the first direction D1 is shorter than that of the second sheet 34, so that a semi-hydrophilic material is placed on the wearer's skin side of the end 22a on the first end 22 side and the end 24a on the second end 24 side of the absorbent article 20 of the worn article 1.
[0108] However, the wearing article of the present invention in which a semi-hydrophilic or hydrophobic material is arranged on the wearer's skin side of the first end portion that is positioned on the front torso side of the wearer when worn and the second end portion that is positioned on the back torso side of the wearer when worn can also be realized by the configuration and structure of the following fourth embodiment.
[0109] A wearing article 1C of a fourth embodiment will be described with reference to Fig. 14. Fig. 14 is a schematic development view of the wearing article 1A. Note that, similar to the detailed description of the absorbent article 20 of the first embodiment, the side gathers 70 and the three-dimensional gathers 80 are not shown or described here.
[0110] The wearing article 1C of the fourth embodiment is similar to the wearing article 1 of the first embodiment except for the front sheet group 30C of the absorbent article 20C, and therefore, unless otherwise necessary, explanations of parts other than the absorbent article 20C will be omitted here.
[0111] In the absorbent article 20C of the wearing article 1C of the fourth embodiment, the top sheet 32 and the second sheet 34 have the same length in the first direction D1. However, the back sheet 42 is longer than the top sheet 32 and the second sheet 34 of the front sheet group 30C in the first direction D1. The front sheet group 30C is not disposed in positions corresponding to the ends 22a and 24a of the absorbent article 20 of the first embodiment. As a result, the back sheet 42 faces the wearer's skin at the end 22a on the first end 22 side and the end 24a on the second end 24 side of the absorbent article 20C. -Features of the fourth embodiment- In the wearing article 1C of the fourth embodiment, the back sheet 42 is longer in the first direction D1 than the front sheet group 30C. When worn, the back sheet 42 faces the wearer's skin at the end 22a on the first end 22 side and the end 24a on the second end 24 side of the absorbent article 20.
[0112] By configuring the wearing article 1C in this manner, a hydrophobic material is placed at the ends 22a, 24a of the absorbent article 20C, without having to join a cover sheet 36 to the top sheet 32 as in the wearing article 1A, or apply a hydrophilic treatment to only a portion of the top sheet 32 as in the wearing article 1B, thereby preventing body fluids from moving to the ends (first end 22 and second end 24) of the absorbent article and leaking out from the ends of the absorbent article 20C.
[0113] As already explained in the first embodiment, in the absorbent article 20B, a semi-hydrophilic or hydrophobic material may be placed on the wearer's skin side only at the first end of the end 22a on the first end 22 side or the end 24a on the second end 24 side, rather than at both the end 22a on the first end 22 side and the end 24a on the second end 24 side.
[0114] Also, for example, in the front sheet group 30C, the semi-hydrophilic second sheet 34 may be omitted and only the top sheet 32 may be provided.
[0115] <Modification> Modifications of the above embodiment are described below. Note that the content of each of the following modifications may be combined with the content of other modifications to the extent that no contradiction occurs. (1) Variation A The features of the absorbent article 20 of the first to fourth embodiments may be combined as appropriate. For example, the feature of the first embodiment, in which a top sheet 32 is not disposed at the end 22a, may be applied to the end 22a on the first end 22 side of the absorbent article 20, and the feature of the second embodiment, in which a cover sheet 36 is disposed at the end 24a on the second end 24 side of the absorbent article 20, may be applied to the end 24a on the second end 24 side of the absorbent article 20.
[0116] (2) Variation B In the above embodiment, the wearing articles 1, 1A, 1B, and 1C are described as examples in which the absorbent article 20 is joined to the waistline member 10 only at the second end 24. However, the shape of the wearing article is not limited to that of the wearing articles 1, 1A, 1B, and 1C.
[0117] For example, the wearing article of the present invention may be a wearing article in which the absorbent article 20 is joined to the waistline member 10 only at the first end 22 side.
[0118] Furthermore, for example, the wearing article of the present invention may be, like the wearing article 1D shown in FIG. 15, a pair of waistband members 10, and the absorbent article 20 may be joined to the waistband members 10 at the first end 22 side and the second end 24 side.
[0119] <Additional Notes> Finally, the technical ideas that can be understood from the above embodiment will be added below.
[0120] A first aspect of the present invention provides a wearing article comprising a waistband member and an absorbent article. The waistband member is placed around the waist of a wearer when worn. The absorbent article extends in a first direction between a first end that is placed on the front torso side of the wearer when worn and a second end that is placed on the rear torso side of the wearer when worn. At least one of the first end and the second end of the absorbent article is connected to the waistband member. The absorbent article is placed between the wearer's crotch when worn. The absorbent article includes a front sheet group, a hydrophobic back sheet, and an absorbent core. The front sheet group is placed against the wearer's skin when worn and extends between the front and rear torso sides of the wearer. The back sheet extends between the front and rear torso sides of the wearer when worn. The absorbent core is placed between the front sheet group and the back sheet. A semi-hydrophilic or hydrophobic material is disposed on the wearer's skin side of the first end, which is the end on the first end side or the end on the second end side of the absorbent article.
[0121] In the wearing article of the first aspect, a semi-hydrophilic or hydrophobic material, rather than a hydrophilic material, is arranged on at least one of the skin-facing ends of the absorbent article, thereby preventing body fluids from moving to the end (first end or second end) of the absorbent article and leaking out from the end of the absorbent article.
[0122] A second aspect of the present invention relates to a wearing article according to the first aspect, wherein the front sheet group includes a hydrophilic top sheet and a semi-hydrophilic second sheet disposed between the top sheet and the back sheet. The top sheet is shorter than the second sheet in the first direction. The second sheet is disposed on the wearer's skin side of the first end of the absorbent article.
[0123] In the wearing article of the second aspect, a semi-hydrophilic material is arranged on the skin side of at least one end of the absorbent article, thereby preventing body fluids from moving to the end of the absorbent article and leaking out from the end of the absorbent article.
[0124] A wearing article according to a third aspect of the present invention is the wearing article according to the first aspect, wherein the front sheet group includes a hydrophilic top sheet and a hydrophobic sheet that is positioned on the wearer's skin side of the first end of the absorbent article and covers the top sheet.
[0125] In the wearing article of the third aspect, a hydrophobic material, or a hydrophobic material and a semi-hydrophilic material, is arranged on the skin side of at least one end of the absorbent article, thereby preventing body fluids from moving to the end of the absorbent article and leaking out from the end of the absorbent article.
[0126] A fourth aspect of the present invention provides a wearing article according to the first aspect, wherein the front sheet group includes a hydrophilic topsheet extending between a first end and a second end of the absorbent article, and the topsheet at the first end of the absorbent article is not subjected to a hydrophilic treatment.
[0127] In the wearing article of the fourth aspect, a hydrophobic material is arranged at at least one end of the absorbent article, without using an additional hydrophobic sheet in the front sheet group as in the wearing article of the third aspect, thereby making it possible to suppress the occurrence of the phenomenon in which body fluids move to the end of the absorbent article and leak from the end of the absorbent article.
[0128] A fifth aspect of the present invention provides a wearing article according to the first aspect, wherein the back sheet is longer than the front sheet group in a first direction, and when worn, the back sheet faces the wearer's skin at a first end of the absorbent article.
[0129] In the wearing article of the fifth aspect, a hydrophobic material is disposed at at least one end of the absorbent article, without using an additional hydrophobic sheet in the front sheet group as in the wearing article of the third aspect, or without subjecting only a portion of the top sheet to hydrophilic treatment as in the wearing article of the fourth aspect, thereby making it possible to suppress the occurrence of the phenomenon in which body fluids move to the end of the absorbent article and leak from the end of the absorbent article.
[0130] A sixth aspect of the present invention provides a wearing article according to any one of the first to fifth aspects, wherein the length of the first end of the absorbent article in the first direction is 30 mm or more and 90 mm or less.
[0131] In the wearing article of the sixth aspect, by making the first end 30 mm or more, leakage (seepage) of the wearer's body fluid discharged into the absorbent article from the first end and the second end is easily suppressed. On the other hand, by limiting the length of the first end to 90 mm or less, the wearer's body fluid discharged into the absorbent article can be smoothly guided to the absorbent core.
[0132] A seventh aspect of the present invention relates to a method for manufacturing a wearing article according to the second aspect. The method for manufacturing a wearing article includes a first step and a second step. In the first step, a top sheet is formed by cutting a continuous absorbent first sheet in a direction perpendicular to the conveyance direction. In the second step, successively formed top sheets are joined to a continuous semi-absorbent second sheet at intervals in the conveyance direction of the second sheet. The second sheet is a continuous sheet that will be cut in a direction perpendicular to the conveyance direction in a subsequent step to form a second sheet. [Explanation of symbols]
[0133] 1, 1A, 1B, 1C, 1D Wearing items 10 Waist member 20, 20A, 20B, 20C Absorbent articles 22 1st end 22a End (1st end) 24 2nd end 24a End (1st end) 30, 30A, 30B, 30C front seats 32 top sheet 34 Second seat 36 Cover sheet (hydrophobic sheet) 42 Back Seat 50 absorbent core D1 1st direction L1 Length of the end on the first end side L2 Length of the end on the second end side
Claims
1. a waistband member that is placed around the wearer's waist when worn; an absorbent article that extends in a first direction between a first end that is located on the front torso side of the wearer when worn and a second end that is located on the rear torso side of the wearer when worn, and is connected to the waistband member at least on one side of the first end and the second end, and is located between the crotch areas of the wearer when worn; A wearing article comprising: The absorbent article comprises: a front sheet group that is placed against the wearer's skin when worn and extends between a front torso side and a rear torso side of the wearer; a hydrophobic back sheet that extends between a front torso side and a rear torso side of a wearer when worn; an absorbent core disposed between the front sheet group and the back sheet; Including, a semi-hydrophilic or hydrophobic material is disposed on a wearer's skin side of a first end portion of the absorbent article, the first end portion being an end portion of the absorbent article on the first end side or the second end side; Wearable items.
2. The front sheet group includes a hydrophilic top sheet and a semi-hydrophilic second sheet disposed between the top sheet and the back sheet, In the first direction, the top sheet is shorter than the second sheet; The second sheet is disposed on the wearer's skin side of the first end of the absorbent article. The wearing article according to claim 1 .
3. The front sheet group includes a hydrophilic top sheet and a hydrophobic sheet that is disposed on the wearer's skin side of the first end of the absorbent article and covers the top sheet. The wearing article according to claim 1 .
4. the front sheet group includes a hydrophilic top sheet extending between the first end and the second end, and the top sheet at the first end of the absorbent article has not been subjected to a hydrophilic treatment; The wearing article according to claim 1 .
5. In the first direction, the back sheet is longer than the front sheet group; When worn, the backsheet faces the wearer's skin at the first end of the absorbent article. The wearing article according to claim 1 .
6. The length of the first end of the absorbent article in the first direction is 30 mm or more and 90 mm or less. The wearing article according to any one of claims 1 to 5.
7. A method for manufacturing a wearing article according to claim 2, cutting a continuous absorbent first sheet in a direction perpendicular to the conveyance direction to form the top sheet; a step of joining the successively formed top sheets to a continuous semi-absorbent second sheet at intervals in the conveyance direction of the second sheet, the second sheet being cut in a direction perpendicular to the conveyance direction in a subsequent step; A method for manufacturing a wearing article, comprising:
Citation Information
Patent Citations
Disposable pull-on garment
JP2010279712A