Nonwoven fabric for absorbent articles and topsheets

Abstract

Provided is an absorbent article having a colored portion, which allows the color of the colored portion to be easily recognized visually and allows the absorption state of excrement that has migrated to a lower layer to be easily grasped. [Solution] The absorbent article 1 includes a top sheet 12 and an absorbent body 14 located on the non-skin side of the top sheet 12, and has a colored portion. The top sheet 12 is a nonwoven fabric in which colored fibers having colored portions and non-colored fibers having no colored portions are mixed.

Description

[Technical field]

[0001] The present invention relates to nonwoven fabrics for absorbent articles and topsheets. [Background technology]

[0002] An absorbent article having a colored portion is known. For example, Patent Document 1 discloses an absorbent article having a cooling sensation agent. The absorbent article includes an absorbent body and a top sheet arranged on the skin side of the absorbent body. The absorbent article has a colored area that is visible in green from the top sheet side. The cooling sensation agent is applied to the top sheet or the second sheet. The colored area may be a colored area in which the cooling sensation agent is colored, or a colored area in which a member arranged on the non-skin side of the top sheet is colored. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Utility Model Registration No. 3218590 Summary of the Invention [Problem to be solved by the invention]

[0004] In Patent Document 1, when a colored portion (colored region) is present in a top sheet, the color of the colored portion may make it difficult to determine the absorption state of excrement (e.g., menstrual blood, urine) that has migrated to the lower layer. When a colored portion is present in a member disposed on the side away from the skin than the top sheet, the color of the colored portion may be hidden by the top sheet, making it difficult to visually recognize the color of the colored portion.

[0005] The object of the present invention is to provide an absorbent article and a nonwoven fabric for a top sheet, which have a colored portion and in which the color of the colored portion is easily visible and the absorption state of excrement that has migrated to the lower layer can be easily grasped. [Means for solving the problem]

[0006] One aspect of the present invention is as follows: An absorbent article having a colored portion, the absorbent article comprising a top sheet and an absorbent body located on the non-skin side of the top sheet, the top sheet being a nonwoven fabric in which colored fibers having the colored portion and non-colored fibers not having the colored portion are mixed.

[0007] Another aspect of the present invention is as follows: A nonwoven fabric for a top sheet of an absorbent article, comprising: The nonwoven fabric for top sheets is an air-through nonwoven fabric formed by defibrating and mixing a fiber web of heat-fusible colored fibers and a fiber web of heat-fusible non-colored fibers and by an air-through method. Effect of the Invention

[0008] The present invention makes it possible to provide an absorbent article and a nonwoven fabric for a top sheet, which have a colored portion and in which the color of the colored portion is easily visible and the absorption state of excrement that has migrated to the lower layer can be easily grasped. [Brief description of the drawings]

[0009] [Figure 1] 1A to 1C are diagrams illustrating an example of a configuration of an absorbent article according to an embodiment. [Diagram 2] 2 is a schematic cross-sectional view of the absorbent article of FIG. 1 taken along line CW. [Diagram 3] 1 is an image for explaining a highly colored region and a lightly colored region in an absorbent article according to an embodiment. [Figure 4] 1 is an image for explaining colored fibers and non-colored fibers in an absorbent article according to an embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] The present embodiment relates to the following aspects. [Aspect 1] The absorbent article has a top sheet and an absorbent body located on the non-skin side of the top sheet, and has a colored portion, the top sheet being a nonwoven fabric that is a mixture of colored fibers having the colored portion and non-colored fibers not having the colored portion.

[0011] In this absorbent article, the top sheet is a nonwoven fabric formed by mixing colored fibers and non-colored fibers. Therefore, the colored fibers, which are easily visible from the use surface (skin side) of the absorbent article, allow the user to enjoy the color variations of the absorbent article and suppress negative feelings related to excrement (e.g., menstrual blood, vaginal discharge, urine). On the other hand, the non-colored fibers allow the user to easily grasp the absorption state of excrement that has migrated to the lower layer. In this way, in an absorbent article having a colored portion, the color of the colored portion is easily visible, and the absorption state of excrement that has migrated to the lower layer can be easily grasped. And, when the absorbent article is a sanitary napkin, negative feelings such as depression during menstruation can be reduced, and it is easier to grasp the timing of changing the absorbent napkin.

[0012] [Aspect 2] The absorbent article of claim 1, wherein the topsheet includes high-colored areas in which the fiber density of the colored fibers is higher than the fiber density of the uncolored fibers, and low-colored areas in which the fiber density of the colored fibers is lower than the fiber density of the uncolored fibers.

[0013] In the present absorbent article, the highly colored regions contain a large amount of colored fibers, which allows the wearer to enjoy the color variations of the absorbent article and to suppress negative feelings about excrement. The lightly colored regions contain a large amount of non-colored fibers, which allows the wearer to easily grasp the state of absorption of excrement that has migrated to the lower layers. In addition, when the absorbent article is a sanitary napkin, the highly colored regions can reduce the depression felt during menstruation, and the lightly colored regions can make it easier to know when to change the napkin.

[0014] [Aspect 3] 3. The absorbent article of claim 1 or 2, wherein the colored fibers have a larger fiber diameter than the uncolored fibers.

[0015] In this absorbent article, the fiber diameter of the colored fibers is larger than that of the non-colored fibers. Therefore, the colored portion is more easily visible due to the colored fibers having a larger fiber diameter, so that the color variations of the absorbent article can be more enjoyed and negative feelings regarding excrement can be more suppressed. On the other hand, the non-colored fibers having a smaller fiber diameter make it easier to see through the lower layer, so that the absorption state of the excrement that has migrated to the lower layer can be more easily understood. And, when the absorbent article is a sanitary napkin, the feeling of depression during menstruation can be further reduced and it becomes easier to know when to change it.

[0016] [Aspect 4] Aspect 4. The absorbent article of any one of aspects 1 to 3, wherein the colored fibers and the non-colored fibers are heat-fusible fibers, and the nonwoven fabric is an air-through nonwoven fabric.

[0017] In this absorbent article, the nonwoven fabric of the top sheet is an air-through nonwoven fabric. Therefore, the fiber density of the top sheet is likely to be low, and the lower layer of the top sheet is easily visible through the top sheet. Therefore, the absorption state of the excrement that has migrated to the lower layer can be more easily grasped. In addition, when the absorbent article is a sanitary napkin, it is easier to know when to replace it.

[0018] [Aspect 5] The absorbent article of any one of aspects 1 to 4, wherein the colored fibers and the uncolored fibers are heat-fusible fibers, and the ratio of the tensile strength of the top sheet in the longitudinal direction to the tensile strength of the top sheet in the width direction is 1 to 6.

[0019] In this absorbent article, the ratio of the longitudinal tensile strength to the transverse tensile strength of the top sheet made of heat-fusible fibers is small (1-6). Therefore, the colored fibers and the non-colored fibers are oriented relatively randomly and are relatively mixed. Therefore, since the non-colored fibers are distributed throughout the top sheet, the lower layer of the top sheet can be easily seen through the non-colored fibers, and therefore, it is easier to grasp the absorption state of the excrement that has migrated to the lower layer. And, when the absorbent article is a sanitary napkin, it is easier to grasp the timing of changing the napkin.

[0020] [Aspect 6] An absorbent article as described in any one of claims 1 to 5, wherein the top sheet has a functional agent disposed on the skin-facing surface and / or the non-skin-facing surface, and the color of the colored portion includes a color associated with the functional agent.

[0021] In this absorbent article, the top sheet includes a functional agent disposed on the skin-facing surface and / or the non-skin-facing surface. The color of the colored portion (the color of the colored fibers) is a color related to the functional agent, for example, a color that evokes the function of the functional agent. This makes it easy to recall that the absorbent article contains a functional agent through the color of the colored portion, i.e., the color of the colored fibers, while also making it easy to grasp the absorption state of excrement that has migrated to the lower layer via the non-colored fibers. Furthermore, when the absorbent article is a sanitary napkin, it makes it easy to know when to change it.

[0022] [Aspect 7] The absorbent article of any one of aspects 1 to 6, wherein the absorbent body includes a cooling agent disposed on the surface facing the skin and / or inside, and the colored portion has a color including blue.

[0023] In this absorbent article, the absorbent body is provided with a cooling sensation agent disposed on the skin-facing surface and / or inside. The color of the colored portion (color of the colored fibers) is a color associated with the cooling sensation agent, i.e., blue, which is a color that evokes the function of the cooling sensation agent. This makes it easy to recognize that the absorbent article contains a cooling sensation agent through the color of the colored portion, i.e., the color of the colored fibers, while also making it easy to grasp the absorption state of excrement that has migrated to the lower layer via the non-colored fibers. Furthermore, when the absorbent article is a sanitary napkin, it makes it easy to know when to change it.

[0024] [Aspect 8] 8. The absorbent article of any one of claims 1 to 7, wherein the absorbent body comprises a Doun Sirih extract disposed on a surface facing the skin and / or inside, and the color of the colored portion comprises green.

[0025] In this absorbent article, the absorbent body is provided with daun siri extract (antibacterial agent and deodorant) placed on the surface facing the skin and / or inside. The color of the colored portion (color of the colored fiber) is a color associated with daun siri, that is, green, which is a color reminiscent of daun siri (leaves). This makes it easy to remember that the absorbent article contains daun siri extract through the color of the colored portion, i.e., the color of the colored fiber, while also making it easy to grasp the absorption status of excrement that has migrated to the lower layer through the non-colored fiber. And, if the absorbent article is a sanitary napkin, it makes it easy to know when to change it.

[0026] [Aspect 9] Aspect 9. The absorbent article of any one of aspects 1 to 8, further comprising a second sheet positioned between the top sheet and the absorbent body, the second sheet being white in color.

[0027] In this absorbent article, a white second sheet is disposed on the non-skin side of the top sheet. This makes the colored fibers more visible, allowing the wearer to enjoy the color variations of the absorbent article and suppress negative feelings about excrement. On the other hand, the condition of the lower layer is more visible through the non-colored fibers, making it easier to grasp the absorption state of excrement. And, when the absorbent article is a sanitary napkin, it can reduce the depression felt during menstruation and make it easier to know when to change the napkin.

[0028] [Aspect 10] Aspects 1 to 9. The absorbent article of any one of aspects 1 to 9, wherein the colored fibers and the non-colored fibers are heat-fusible fibers, and in the nonwoven fabric, the colored fibers, the non-colored fibers, and / or the colored fibers and the non-colored fibers are fused to each other at intersections.

[0029] In the absorbent article, the colored fibers, the non-colored fibers, and / or the colored and non-colored fibers are fused to each other at the intersections, so that the fibers are less likely to move and the nonwoven fabric can easily maintain its pre-use state even during and after use. This makes it easier to check the state of absorption of bodily waste from the non-colored fiber parts even after use. And, when the absorbent article is a sanitary napkin, it makes it easier to know when to replace it.

[0030] [Aspect 11] 11. The absorbent article of any one of aspects 1 to 10, wherein the colored fiber is a sheath-core fiber, and the colored portion is provided only in a core portion of the sheath-core fiber.

[0031] In this absorbent article, only the core of the core-sheath fiber, which is a colored fiber, has a colored portion, i.e., only the core is colored (the sheath is not colored). Therefore, when colored fibers, uncolored fibers, and / or colored and uncolored fibers are fused to each other, the outer uncolored sheath melts and the inner colored core is difficult to melt. This prevents the colored portion from melting and spreading to the surroundings, making it easier to clearly distinguish between the colored fiber and the uncolored fiber and improving visibility. In addition, since the sheath is not colored, it is possible to prevent skin troubles for users caused by color bleeding.

[0032] [Aspect 12] 12. The absorbent article of any one of claims 1 to 11, wherein the colored fibers have color themselves.

[0033] In the present absorbent article, the colored fibers themselves have a color. In other words, the colored fibers are not uncolored fibers that have been colored with paint, but the fibers themselves have a color. That is, the fiber material (e.g., resin) itself has a color. Therefore, the color of the colored fibers before use is likely to be maintained even during and after use. As a result, even after use, the colored fibers allow the user to enjoy the color variations of the absorbent article, suppressing negative feelings regarding excrement, and the non-colored fibers make it easier to grasp the absorption state of excrement that has migrated to the lower layer. And, in the case where the absorbent article is a sanitary napkin, it is easier to grasp the timing of replacement.

[0034] [Aspect 13] 13. The absorbent article of any one of claims 1 to 12, wherein the colored fibers include a plurality of colored fibers having colored portions of different colors.

[0035] In the present absorbent article, the colored fiber includes a plurality of colored fibers having colored portions of different colors. That is, the colored fiber includes a plurality of colored fibers of different colors. Therefore, the colored fibers allow the absorbent article to have more color variations and can further suppress negative feelings about excrement.

[0036] [Aspect 14] The nonwoven fabric for the top sheet of an absorbent article is an air-through nonwoven fabric formed by defibrating and mixing a fiber web of heat-fusible colored fibers and a fiber web of heat-fusible non-colored fibers and by an air-through method.

[0037] The nonwoven fabric for top sheets is an air-through nonwoven fabric formed by defibrating a fiber web of heat-fusible colored fibers and a fiber web of heat-fusible non-colored fibers by an air-through method, and therefore the fiber density is likely to be low. Therefore, when the nonwoven fabric is used as a top sheet of an absorbent article, the lower layer of the top sheet is easily visible, and the top sheet is likely to maintain its pre-use state even during and after use. As a result, even after use, the colored fibers allow the user to enjoy the color variations of the absorbent article, suppressing negative feelings about excrement, and the non-colored fibers make it easy to grasp the absorption state of excrement that has migrated to the lower layer. And, when the absorbent article is a sanitary napkin, it is easy to grasp the timing of replacement.

[0038] The absorbent article according to the present embodiment will be described below. In the present embodiment, a sanitary napkin will be described as an example of the absorbent article. However, the present invention can be applied to other absorbent articles without departing from the scope of the subject matter of the present invention. Examples of other absorbent articles include panty liners, incontinence pads, and disposable diapers.

[0039] Next, an absorbent article 1 according to an embodiment will be described. Fig. 1 and Fig. 2 are diagrams showing an example of the configuration of the absorbent article 1 according to an embodiment. Fig. 1 is a plan view showing the absorbent article 1 in an unfolded state. Fig. 2 is a schematic cross-sectional view of the absorbent article of Fig. 1 taken along line CW.

[0040] The absorbent article 1 has a longitudinal direction L, a width direction W, and a thickness direction T that are perpendicular to each other. In the absorbent article 1 depicted in FIG. 11, the upper and lower sides of the figure are the front and rear sides of the longitudinal direction L, the left and right sides are the left and right sides of the width direction W, and the front and back sides of the paper are the upper and lower sides of the thickness direction T. The absorbent article 1 has a longitudinal centerline CL (imaginary line) that passes through the center of the width direction W and extends in the longitudinal direction L, and a widthwise centerline CW (imaginary line) that passes through the center of the longitudinal direction L and extends in the width direction W. The directions and sides toward the longitudinal centerline CL are respectively the inward and inner sides of the width direction W, and the directions and sides away from the longitudinal centerline CL are respectively the outward and outer sides of the width direction W. Meanwhile, the directions and sides toward the widthwise centerline CW are respectively the inward and inner sides of the longitudinal direction L, and the directions and sides away from the longitudinal direction L are respectively the outward and outer sides of the longitudinal direction L. Viewing the absorbent article 1 placed on a plane including the longitudinal direction L and width direction W from above in the thickness direction T is called a planar view, and the shape as understood in a planar view is called a planar shape. Any direction within a plane including the longitudinal direction L and width direction W is called a planar direction. When a wearer wears the absorbent article 1, the sides that are relatively closer to and farther from the wearer's skin surface in the thickness direction T are called the skin side and the non-skin side, respectively. These definitions are also commonly used for each material of the absorbent article 1 and in an individually packaged state.

[0041] In this embodiment, the absorbent article 1 (excluding the wing portions) has a generally rectangular shape that is long in the longitudinal direction L and short in the width direction W in a plan view, and both ends of the longitudinal direction L have a generally semicircular shape. The shape of the absorbent article 1 is not particularly limited as long as it is long in the longitudinal direction L and short in the width direction W, and examples of the shape include a rounded rectangle, an ellipse, a gourd shape, and an hourglass shape. The absorbent article 1 has a pair of wing portions 17 that extend outward on both sides in the width direction W from the generally rectangular portion. The wing portions 17 have a generally trapezoidal shape. The shape is not particularly limited, and may be, for example, a semicircle or a semiellipse.

[0042] In this embodiment, the absorbent article 1 includes a top sheet 12, an absorbent body 14, a back sheet 13, and a clothing fastening part 20. The top sheet 12 is a liquid-permeable sheet and constitutes the skin-side surface of the absorbent article 1. The absorbent body 14 is a liquid-absorbent and liquid-retentive material and is located on the non-skin side of the top sheet 12 and on the skin side of the back sheet 13. In this embodiment, the absorbent body 14 includes an absorbent core 14a (e.g., pulp fiber, superabsorbent polymer) and a core wrap sheet 14b that contains the absorbent core 14a. The back sheet 13 is a liquid-impermeable sheet and constitutes the non-skin side surface of the absorbent article 1 in this embodiment. The clothing fastening part 20 is an adhesive that adheres the absorbent article 1 to the skin-side surface of underwear and is located on the non-skin side surface of the back sheet 13 in this embodiment. Therefore, in the absorbent article 1, the top sheet 12, the absorbent body 14, the back sheet 13, and the clothing fastening part 20 are laminated in this order in the thickness direction T. The absorbent article 1 may further include an outer sheet on the non-skin side of the back sheet 13, and may further include a liquid-permeable second sheet between the top sheet 12 and the absorbent body .

[0043] The fineness of the constituent fibers of the top sheet 12 is not particularly limited, and may be, for example, 1 to 10 dtex. The constituent fibers of the top sheet 12 may be either short fibers or long fibers. When the constituent fibers are short fibers, the fiber length is not particularly limited, and may be, for example, 2 to 80 mm. If it is less than 2 mm, the fiber length is too short and the fibers are difficult to entangle during the production of the top sheet, resulting in insufficient strength and thickness. If it exceeds 80 mm, the fiber length is too long and the fibers are easily entangled during the production of the top sheet, making it difficult to form a uniform nonwoven fabric. The fiber length of the constituent fibers is preferably 10 to 60 mm, and more preferably 20 to 40 mm.

[0044] The basis weight of the top sheet 12 is not particularly limited, but is, for example, 10 to 500 g / m 2 and 15 to 300 g / m 2 is preferable, and 20 to 200 g / m 2 is more preferable, mainly from the viewpoints of absorption performance etc. (lower limit) and wearing comfort etc. (upper limit).

[0045] In this embodiment, the absorbent article 1 further includes a pair of side sheets 16 and a pair of clothing fastening parts 19. The pair of side sheets 16 are hydrophilic or water-repellent sheets, and in this embodiment, are located on both sides of the top sheet 12 in the width direction W. The pair of clothing fastening parts 19 are adhesives that bond the pair of wing parts 17 to the non-skin side of the underwear, and in this embodiment, are located on the non-skin side surfaces of the back sheet 13 of the pair of wing parts 17. The pair of side sheets 16 may include a pair of leak-proof walls extending along the longitudinal direction L on the inner side in the width direction W.

[0046] In this embodiment, the absorbent article 1 further includes compressed sections 18 formed by squeezing in the thickness direction T from the top sheet 12 toward the absorbent body 14 (not shown in FIG. 2). The compressed sections 18 include compressed sections 18 located approximately in the center of the longitudinal direction L, extending along the longitudinal direction L, and provided on both sides of the longitudinal centerline CL in the width direction W, and compressed sections 18 located approximately in the center of the width direction W, extending along the width direction W, and provided on both sides of the longitudinal centerline CW in the longitudinal direction L. The shape and number of compressed sections 18 are arbitrary, and the absorbent article 1 does not need to include at least one of the compressed sections 18.

[0047] In this embodiment, the top sheet 12, absorbent body 14 and back sheet 13 are each joined to each other with an adhesive, the top sheet 12 and a pair of side sheets 16 are joined by ultrasonic sealing or heat sealing, and the top sheet 12, a pair of side sheets 16 and back sheet 13 at the peripheral portion of the absorbent article 1 are joined by ultrasonic sealing or heat sealing.

[0048] Next, a configuration example of the top sheet 12 according to the embodiment will be described. The top sheet 12 is a nonwoven fabric in which colored fibers having colored portions and non-colored fibers having no colored portions are mixed. In this embodiment, the constituent fibers of the nonwoven fabric are core-sheath fibers, and only the core is the colored portion. However, the entire colored fiber may be the colored portion. The color of the colored portion of the colored fiber can be appropriately selected depending on the content to be expressed with that color.

[0049] The color of the colored portion of the colored fiber may be, for example, a color related to the functional agent contained in the absorbent article 1, such as a color that may evoke the functional agent. The functional agent may be, for example, at least one of a cooling agent, a warming agent, an antibacterial agent, and a fragrance. The details of these will be described later. The color related to (may evoke) the cooling agent may be, for example, blue or blue-green, which indicates a refreshing feeling. The color related to (may evoke) the warming agent may be, for example, red or orange, which indicates warmth. The color related to (may evoke) the antibacterial agent may be, for example, green or yellow-green, which indicates the leaves of a plant (e.g., down silk) that has antibacterial properties. The color related to (may evoke) the fragrance may be, for example, orange or yellow, which indicates the fragrance when the fragrance has a fruity scent. However, the related colors are not limited to the above examples. For example, the colors of the hues of the Ostwald color system may be used as the colors of blue or blue-green, red or orange, green or yellow-green, and orange or yellow.

[0050] An example of the material of the colored fiber is a synthetic resin fiber having a colored portion. An example of the synthetic resin fiber having a colored portion is a fiber formed by melting and extruding a raw material in which a synthetic resin pellet and a master batch made of a colorant and a synthetic resin are mixed. In this case, the colored fiber is a synthetic resin fiber containing a colorant. In this embodiment, the colored fiber contains a colorant, and therefore the fiber itself (the entire fiber) has a predetermined color.

[0051] From the viewpoint of manufacturing nonwoven fabrics, the synthetic resin fiber is preferably a heat-fusible fiber. Examples of heat-fusible fibers include known resin fibers such as olefin resin fibers such as polyethylene (PE), polypropylene (PP), and ethylene-vinyl acetate copolymer (EVA), polyester resin fibers such as polyethylene terephthalate (PET) and polylactic acid (PLA), and polyamide resin fibers such as 6-nylon. These resins may be used alone or in combination of two or more types of resins. The structure of such fibers is not particularly limited, and examples include composite fibers such as core-sheath type fibers, side-by-side type fibers, and island / sea type fibers, hollow type fibers, irregular cross-section fibers such as flat, Y-shaped, and C-shaped, three-dimensional crimped fibers with latent or apparent crimp, and split fibers that are split by physical loads such as water flow, heat, and embossing. Fibers having these structures may be used alone or in combination of two or more types of fibers. In this embodiment, the synthetic resin fiber, which is the material of the colored fiber, is a heat-fusible fiber, and the heat-fusible fiber is a composite fiber of a core-sheath fiber with a polyethylene terephthalate (PET) core and a polyethylene (PE) sheath. Note that the colored fiber may be a semi-synthetic fiber such as acetate containing a coloring agent or a regenerated fiber such as rayon.

[0052] The synthetic resin fiber having a colored portion may be, for example, a synthetic resin fiber having no colored portion and a coloring agent having a predetermined color applied to the surface thereof by a spray method, or a synthetic resin fiber having no colored portion and colored with a dye. The colored fiber may be a semi-synthetic fiber or a regenerated fiber colored with a coloring agent or dye.

[0053] On the other hand, the non-colored fiber is a fiber that does not have a colored portion and does not contain a colorant. An example of the non-colored fiber is a synthetic resin fiber that does not contain a colorant. In this embodiment, the non-colored fiber is a white fiber. From the viewpoint of manufacturing the non-woven fabric, the synthetic resin fiber is preferably a heat-fusible fiber. In this embodiment, the synthetic resin fiber that is the material of the non-colored fiber is a heat-fusible fiber, and the heat-fusible fiber is a composite fiber of a core-sheath fiber with a polyethylene terephthalate (PET) as the core and a polyethylene (PE) as the sheath.

[0054] In this embodiment, the top sheet 12 is an air-through nonwoven fabric. The air-through nonwoven fabric can be formed by defibrating the above-mentioned colored fibers or a fiber web of colored fibers, defibrating the above-mentioned non-colored fibers or a fiber web of non-colored fibers, mixing the defibrated colored fibers and the defibrated non-colored fibers, and entangling them by the air-through method. In this case, the short fibers, colored fibers and non-colored fibers, are in a state of being mixed with each other.

[0055] However, the nonwoven fabric used for the top sheet 12 is not limited to an air-through nonwoven fabric, and other nonwoven fabrics may be used, such as a spunlace nonwoven fabric, a spunbond nonwoven fabric, or a meltblown nonwoven fabric.

[0056] Fig. 3 is an image for explaining a highly colored region Q1 and a lightly colored region Q2 in an absorbent article 1 according to an embodiment. In this embodiment, an area QA located approximately in the center of the top sheet 12 in the longitudinal direction L and the width direction W in Fig. 1 is shown in an enlarged plan view. As shown in the figure, in the top sheet 12, colored fibers and non-colored fibers are mixed together and are distributed throughout the top sheet 12. In other words, the colored fibers and non-colored fibers are arranged relatively randomly.

[0057] In this embodiment, the top sheet 12 has a highly colored region Q1 in which the fiber density of the colored fibers is higher than that of the non-colored fibers, and a low-colored region Q2 in which the fiber density of the colored fibers is lower than that of the non-colored fibers. FIG. 3 shows the approximate positions of the highly colored region Q1 and the low-colored region Q2. The highly colored region Q1 is a region in which a relatively large amount of colored fibers are present, but a moderate amount of non-colored fibers are also present, and therefore, it is not a region that is composed only of colored fibers and is entirely colored with a predetermined color. Similarly, the low-colored region is a region in which a relatively large amount of non-colored fibers are present, but a moderate amount of colored fibers are also present, and therefore, it is not a region that is composed only of non-colored fibers and is entirely uncolored.

[0058] However, the fiber density of the top sheet is measured by the following method. (1) A region of the sheet including the portion to be measured is cut with a sharp blade (e.g., a utility knife) to prepare a sample. (2) Using a scanning electron microscope (e.g., VE-7800 manufactured by Keyence Corporation), the cut surface of the part of the sample to be measured is photographed under magnification (e.g., magnification 100 to 1000 times) with the midpoint of the part to be measured in the thickness direction as the center of observation. (3) Count the number of constituent fibers per certain area (e.g., 1 mm × 0.25 mm) of the photographed cut surface. However, when counting the number of constituent fibers, count the number of colored fibers and the number of uncolored fibers separately. (4) The number of cut surfaces of the constituent fibers counted is calculated by dividing the number of cut surfaces by 1 mm. 2 This is converted into the number of cut surfaces of the constituent fibers per unit area, and is calculated as the fiber density (fibers / mm 2 ) except for the fiber density (fibers / mm 2 ) is calculated separately for colored and uncolored fibers. (5) Fiber density (number of fibers / mm 2 The fiber density (fibers / mm 2 ) except for the fiber density of the sheet (fibers / mm 2 ) is calculated separately for colored and uncolored fibers.

[0059] 4 is an image for explaining the colored fibers 31 and the non-colored fibers 32 in the absorbent article according to the embodiment. Specifically, the image is an image of the fusion state of the colored fibers 31 and the non-colored fibers 32 by enlarging a part of the top sheet 12 using a digital microscope (Keyence Corporation: VHX-900). In this embodiment, the top sheet 12 is an air-through nonwoven fabric, and both the colored fibers 31 and the non-colored fibers 32 are heat-fusible fibers. The colored fibers 31 are fused to each other at intersections P1, the non-colored fibers 32 are fused to each other at intersections P2, and / or the colored fibers 31 and the non-colored fibers are fused to each other at intersections P3. The fiber diameter DB of the colored fibers 31 and the fiber diameter DW of the non-colored fibers 32 can be measured from the image.

[0060] In this embodiment, the fiber diameter DB of the colored fibers 31 is larger than the fiber diameter DW of the non-colored fibers 32. This is because the colored fibers 31 tend to become larger in size as the colorant contained therein increases. However, the relationship between the fiber diameters of the colored fibers 31 and the non-colored fibers 32 is not limited to this example, and the fiber diameter of the colored fibers 31 may be smaller than the fiber diameter of the non-colored fibers 32.

[0061] As described above, in the absorbent article 1, the top sheet 12 is a nonwoven fabric formed by mixing the colored fibers 31 and the non-colored fibers 32. Therefore, the colored fibers 31, which are easily visible from the use surface (skin side) of the absorbent article 1, allow the user to enjoy the color variations of the absorbent article 1, and suppress negative feelings related to excrement (e.g., menstrual blood, vaginal discharge, urine). On the other hand, the non-colored fibers 32 allow the user to easily grasp the absorption state of excrement that has migrated to the lower layer. In this way, in the absorbent article 1 having a colored colored portion, the color of the colored portion is easily visible, and the absorption state of excrement that has migrated to the lower layer can be easily grasped. And, when the absorbent article 1 is a sanitary napkin, negative feelings such as depression during menstruation can be reduced, and the user can easily grasp the timing of changing the absorbent article.

[0062] The ratio of the number of colored fibers to the total number of fibers in the top sheet 12 is, for example, 20-80% (number of fibers), preferably 30-70%, and more preferably 40-60%. If it is less than 20%, the color of the colored fibers becomes difficult to discern, and if it exceeds 80%, it becomes difficult to grasp the absorption state of excrement that has migrated to the lower layer. Furthermore, the overall color appearance of the top sheet 12, particularly the color brightness, can be adjusted by changing the ratio of the number of colored fibers.

[0063] In a preferred embodiment of the present invention, the top sheet 12 has a highly colored region Q1 and a lightly colored region Q2. Since the highly colored region Q1 contains a large amount of colored fibers 31, the color variation of the absorbent article 1 can be enjoyed more, and negative feelings regarding excrement can be suppressed more. Since the lightly colored region Q2 contains a large amount of non-colored fibers 32, the absorption state of excrement that has migrated to the lower layer can be more easily grasped. In addition, when the absorbent article 1 is a sanitary napkin, the highly colored region Q1 can further reduce the feeling of depression during menstruation, and the lightly colored region Q2 can more easily grasp the timing of changing the absorbent napkin.

[0064] In a preferred embodiment of the present invention, in the absorbent article 1, the fiber diameter DB of the colored fibers 31 is larger than the fiber diameter DW of the non-colored fibers 32. Therefore, the colored fibers 31 with a larger fiber diameter make the colored portion more visible, so that the color variations of the absorbent article 1 can be more enjoyed and negative feelings regarding excrement can be more suppressed. On the other hand, the non-colored fibers 32 with a smaller fiber diameter make it easier to see through the lower layer, so that the absorption state of the excrement that has migrated to the lower layer can be more easily understood. And, when the absorbent article 1 is a sanitary napkin, the feeling of depression during menstruation can be more reduced and it becomes easier to know when to change it.

[0065] In a preferred aspect of this embodiment, the colored fibers 31 and the non-colored fibers 32 are heat-fusible fibers, and the nonwoven fabric of the top sheet 12 is an air-through nonwoven fabric. This tends to result in a low fiber density in the top sheet 12, making it easy to see through the layer below the top sheet 12, and therefore making it easier to grasp the absorption state of the excrement that has migrated to the lower layer. Furthermore, when the absorbent article 1 is a sanitary napkin, it becomes easier to know when to change it.

[0066] In a preferred aspect of this embodiment, the colored fibers 31 and the non-colored fibers 32 are heat-fusible fibers, and the ratio of the tensile strength in the longitudinal direction L of the topsheet 12 to the tensile strength in the width direction W of the topsheet 12 is 1 to 6. Specifically, the tensile strength in the longitudinal direction L is 10 to 20 [N / 25 mm] (average 16.8 [N / 25 mm]), and the tensile strength in the width direction W is 2 to 15 [N / 25 mm] (average 3.13 [N / 25 mm]). However, the longitudinal direction L and width direction W of the topsheet 12 are the MD (machine direction) and CD (cross direction), respectively, during the production of the topsheet 12.

[0067] Thus, in the absorbent article 1, the ratio of the tensile strength in the longitudinal direction L to the tensile strength in the width direction W of the top sheet 12 made of heat-fusible fibers is small (1-6). Therefore, it can be seen that the colored fibers 31 and the non-colored fibers 32 are oriented relatively randomly and relatively mixed. Therefore, since the non-colored fibers 32 are distributed throughout the top sheet 12, the lower layer of the top sheet 12 can be easily seen through the non-colored fibers 32, and therefore, it is easier to grasp the absorption state of the excrement that has migrated to the lower layer. And, when the absorbent article 1 is a sanitary napkin, it is easier to grasp the timing of changing the napkin.

[0068] However, the tensile strength of the top sheet 12 in the longitudinal direction L and width direction W is measured by the following method. (1) The top sheet 12 is cut into a size of 60 mm x 25 mm to be used as a measurement sample. Three measurement samples are prepared. However, when measuring the tensile strength in the longitudinal direction L, the longitudinal direction is 60 mm, and when measuring the tensile strength in the width direction W, the width direction is 60 mm. (2) Using a tensile testing machine (Shimadzu Corporation, Autograph, Model AGS-1kNG) equipped with a load cell with a maximum load capacity of 50 N, both ends of the 60 mm length of each of the three test samples are clamped in chucks, the chuck distance is set to 40 mm, and the tensile strength is measured at a tensile speed of 40 mm / min. (3) Calculate the final tensile strength as the average of the tensile strengths of the three measured samples.

[0069] In a preferred embodiment of the present invention, the absorbent article 1 includes a functional layer 15 having a volatile functional agent. The functional layer 15 may be an independent layer containing a functional agent (e.g., a sheet containing a functional agent), or may be a region on a sheet constituting the absorbent article 1, such as the top sheet 12, in which the functional agent is disposed. The functional layer 15 is not limited to the region where the functional agent is applied, and if the applied functional agent migrates to another region after application, the other region may also become the functional layer 15. In the present embodiment, the functional layer 15 is disposed on the non-skin side surface of the top sheet 12. The basis weight of the functional agent in the functional layer 15 is, for example, 0.001 to 10 g / m 2 and preferably 0.003 to 5 g / m 2 , more preferably 0.005 to 2.5 g / m 2 Examples include:

[0070] The position of the functional layer 15 is not particularly limited as long as it is within the absorbent article 1. Examples of the position in the thickness direction T include at least one of the non-skin side and / or skin side of the top sheet 12, the non-skin side and / or skin side of the core wrap sheet 14b of the absorbent body 14, the skin side and / or inside of the absorbent core 14a, and the non-skin side and / or skin side of the back sheet 13. In addition, if a second sheet is provided, the non-skin side and / or skin side of the second sheet may be used. Examples of the range in the width direction W include both ends of the sheet where the functional layer 15 (functional agent) is arranged (for example, a range of 5 to 20% of the width of the specified sheet from both ends of the above-mentioned specified sheet), the center (for example, a range of 5 to 20% of the width of the specified sheet on both sides from the longitudinal center line CL), and the entire range (for example, from one end to the other end of the specified sheet). Examples of the range in the longitudinal direction L include both ends of the sheet on which the functional layer 15 (functional agent) is disposed (e.g., a range of 5 to 20% of the length of the specified sheet from both ends of the specified sheet), the center (e.g., a range of 5 to 20% of the length of the specified sheet on both sides from the widthwise centerline CW), and the entire range (e.g., from one end to the other end of the specified sheet). In this embodiment, the position of the functional layer 15 (functional agent) is the non-skin side surface of the top sheet 12 in the thickness direction T, and the entire range of the top sheet 12 in the longitudinal direction L and width direction W (from one end to the other end of the top sheet 12 in each of the longitudinal direction L and width direction W).

[0071] As the volatile functional agent in the functional layer 15, any functional agent according to the desired action can be adopted. As such functional agents, as described above, for example, cooling agents, warming agents, antibacterial agents, and fragrances can be mentioned. For example, in a plan view, one type of functional agent (e.g., a cooling agent) may be disposed in a portion of the functional layer 15, and another type of functional agent (e.g., a fragrance) may be disposed in another portion, or multiple types of functional agents may be disposed in the same portion. In this embodiment, a cooling agent is used.

[0072] In a preferred embodiment of the present invention, the functional agent (functional layer 15) contains at least one of a cooling agent, a warming agent, an antibacterial agent, and a fragrance (hereinafter, simply referred to as "cooling agent, etc."). This makes it possible to store multiple absorbent articles containing volatile cooling agents, etc. in the package while suppressing the evaporation of the volatile cooling agents, etc. from the absorbent articles. This makes it easier to fully obtain the function of the cooling agents, etc.

[0073] The cooling sensation agent that can be used as the functional agent contains a cooling sensation component that stimulates the cold sensation receptors of the wearer's skin without absorbing heat itself, thereby making the wearer feel a cooling sensation. Examples of the cooling sensation component include menthol (e.g., l-menthol, etc.); menthol derivatives (e.g., menthyl lactate, menthone glycerin acetal (MGA), etc.); methyl salicylate; camphor, cucumber extract, and essential oils derived from plants (e.g., mint, eucalyptus, nutmeg, etc.). The cooling sensation agent may also be one that lowers the surrounding temperature by the heat of vaporization. Examples of such cooling sensation agents include alcohol (e.g., ethanol, etc.). These components may be used alone or in combination of two or more.

[0074] When the cooling agent is applied to a predetermined sheet by coating or the like, it may contain a solvent component that dissolves or disperses the cooling component together with the cooling component. Examples of such solvent components include lipophilic solvents and hydrophilic solvents. Examples of lipophilic solvents include oils and fats such as natural oils (e.g., fatty acid esters such as triglycerides, coconut oil, linseed oil, etc.) and hydrocarbons (e.g., paraffin, etc.). On the other hand, examples of hydrophilic solvents include water and alcohol, and examples of alcohol include lower alcohols (e.g., methanol, ethanol, ethylene glycol, glycerin, etc.) and higher alcohols (e.g., capryl alcohol, lauryl alcohol, etc.). Among these solvents, it is preferable to use lipophilic solvents such as oils and fats or alcohols in terms of ease of controlling volatility, and it is more preferable to use lipophilic solvents such as oils and fats in terms of ease of maintaining the absorption performance of the absorbent article. After application of such a solvent to a substrate, the solvent may remain in a solidified or semi-solidified state at the application site, or the solvent may volatilize and only the solute may remain.

[0075] When the cooling sensation agent contains a solvent component, the concentration of the cooling sensation component is preferably 0.0001% by mass or more and 5.0% by mass or less, more preferably 0.0005% by mass or more and 3.0% by mass or less, and even more preferably 0.1% by mass or more and 1.0% by mass or less, from the viewpoint of the cooling sensation effect.

[0076] The warming agent that can be used as the functional agent contains a warming component that stimulates the thermosensory receptors of the wearer's skin without generating heat itself, thereby making the wearer feel a sense of warmth. From the viewpoint of providing a sense of security to the wearer, the warming component is preferably a compound derived from a plant, such as capsaicin, vanillyl alcohol alkyl ether derivatives (e.g., vanillyl ethyl ether, vanillyl butyl ether, vanillyl pentyl ether, vanillyl hexyl ether, etc.), ginger extract, ginger oil, etc. Among these compounds, vanillyl alcohol alkyl ether derivatives, ginger extract, ginger oil, etc. are preferably used from the viewpoint of irritation to the skin. These compounds may be used alone or in combination of two or more kinds. The warming agent may contain a solvent component that dissolves the warming component, and the solvent component is the same as that of the cooling agent.

[0077] The antibacterial agent that can be used as the functional agent contains an antibacterial component. Examples of the antibacterial component include those containing naturally derived antibacterial components (e.g., Doun Sirih extract, Phellodendron bark extract, Olive leaf extract, Chamomile extract, Kumazasa extract, Zanthoxylum pepper extract, Perilla extract, Houttuynia cordata extract, Hop extract, Eucalyptus extract, Artemisia princeps extract, etc.) and synthetic antibacterial components (e.g., ethylhexylglycerin, etc.). These components may be used alone or in combination of two or more. The antibacterial agent may contain a solvent component that dissolves the antibacterial component, and the solvent component is the same as that of the cooling agent.

[0078] The fragrance that can be used as a functional agent is not particularly limited as long as it can be used in sanitary products, and for example, any of natural fragrances and synthetic fragrances may be used, two or more fragrances may be used in combination, and may be dissolved in one or more solvents. Examples of natural fragrances include anise, basil, bergamot, camphor, chamomile, citronella, clove, eucalyptus, grapefruit, rose, jasmine, peppermint, lemongrass, ginger, lavender, ylang-ylang, mint, orange, sage, rosemary, lime, etc. Examples of synthetic fragrances include terpene hydrocarbons such as pinene and limonene; terpene alcohols such as linalool, geraniol, nerol, citronellol, dihydromyrcenol, terpineol, menthol, borneol, and cedrol; alicyclic alcohols such as amber core; aromatic alcohols such as phenylethyl alcohol and eugenol; synthetic sandals such as sandalwood and mysole core; ethers such as rose oxide and anethole; terpene aldehydes such as citral and citronellal; aromatic aldehydes such as cinnamic aldehyde, helional, vanillin, and ethyl vanillin; terpene ketones such as camphor, carvone, ionones, damascone, and damascenone; aromatic ketones such as acetophenone and raspberry ketone, and acetate esters such as ethyl acetate, linalyl acetate, and benzyl acetate; propionate esters such as methyl propionate; salicylic acid esters such as methyl salicylate; and anthranilate esters such as methyl anthranilate. The flavoring may contain a solvent component, and the solvent component is the same as that of the cooling agent.

[0079] As the fragrance, an insect repellent fragrance may be used. The insect repellent fragrance is a repellent (insect repellent) against pests such as mosquitoes, moths, midges, and flies, and is a fragrance of a synthetic compound or a natural plant extract. As the insect repellent fragrance, for example, citronellal, DEET (N,N-diethyl-3-methylbenzamide), sesquiterpene, ethyl butyl acetyl aminopropionate, picaridin, pyrethroid, cinnamon, rosemary, lavender, peppermint, eucalyptus, etc. can be used. The insect repellent fragrance can be appropriately selected according to the target pests and the desired aroma. The insect repellent fragrance may contain a solvent component, and the solvent component is the same as that of the cooling agent.

[0080] As described above, when the top sheet 12 includes a functional agent (at least one of a cooling agent, a warming agent, an antibacterial agent, and a fragrance) disposed on the skin-facing surface and / or the non-skin-facing surface, the color of the colored portion (the color of the colored fibers) is a color related to the functional agent, for example, a color that evokes the function of the functional agent. This makes it easy to recall that the absorbent article 1 contains a functional agent through the color of the colored portion (the color of the colored fibers), while also making it easy to grasp the absorption state of the excrement that has migrated to the lower layer through the non-colored fibers. Furthermore, when the absorbent article 1 is a sanitary napkin, it makes it easy to grasp the timing for changing the absorbent article.

[0081] As a preferred aspect of this embodiment, the absorbent body 14 may include a cooling sensation agent disposed on the surface facing the skin and / or inside. The cooling sensation agent may be applied to other components of the absorbent article 1 and transferred to the absorbent body 14. In this case, the color of the colored portion (color of the colored fibers) contains a color associated with the cooling sensation agent, i.e., blue, which is a color that evokes the function of the cooling sensation agent. This makes it easy to recognize that the absorbent article 1 contains a cooling sensation agent through the color of the colored portion, i.e., the color of the colored fibers, while also making it easy to grasp the absorption state of excrement that has migrated to the lower layer through the non-colored fibers. Furthermore, when the absorbent article 1 is a sanitary napkin, it makes it easy to know when to change it.

[0082] As a preferred aspect of this embodiment, the absorbent body 14 may include Doun Sirih extract (antibacterial agent and deodorant) disposed on the skin-facing surface and / or inside. The Doun Sirih extract may be applied to other components of the absorbent article 1 and transferred to the absorbent body 14. In this case, the color of the colored portion (color of the colored fiber) contains a color related to Doun Sirih, that is, green, which is a color reminiscent of Doun Sirih (leaves). This makes it easy to remember that the absorbent article 1 contains Doun Sirih extract, and makes it easy to grasp the absorption state of excrement that has migrated to the lower layer through the non-colored fiber. And, when the absorbent article 1 is a sanitary napkin, it makes it easy to grasp the timing of replacement.

[0083] As another aspect of this embodiment, a second sheet located between the top sheet 12 and the absorbent body 14 may be further provided. In this case, the second sheet is white. Therefore, the colored fibers are more visible, so that the color variations of the absorbent article can be more enjoyed, and negative feelings regarding excrement can be more suppressed. On the other hand, the state of the lower layer is more visible through the non-colored fibers, so that the absorption state of excrement can be more easily grasped. And, when the absorbent article is a sanitary napkin, the feeling of depression during menstruation can be more reduced, and it is easier to grasp the timing of changing the napkin.

[0084] In a preferred embodiment of the present invention, the colored fibers 31, the uncolored fibers 32, and / or the colored fibers 31 and the uncolored fibers 32 are fused to each other at their intersections, so that the fibers are less likely to move and the nonwoven fabric can easily maintain its pre-use state both during and after use. This makes it easier to grasp the state of excrement absorption from the uncolored fibers 32 even after use. And when the absorbent article 1 is a sanitary napkin, it becomes easier to know when to replace it.

[0085] In a preferred embodiment of the present invention, the colored fiber 31 is a sheath-core fiber, and only the core of the sheath-core fiber has a colored portion. That is, only the core of the colored fiber 31 is colored, and the sheath is not colored. Therefore, when the colored fibers 31 are fused to each other, the non-colored fibers 32 are fused to each other, and / or the colored fibers 31 and the non-colored fibers 32 are fused to each other, the outer non-colored sheath melts, and the inner colored core is difficult to melt. This prevents the colored portion from melting and spreading to the surroundings, making it easier to clearly distinguish the colored fiber 31 from the non-colored fiber 32, and improving visibility. In addition, since the sheath is not colored, it is possible to prevent the user's skin troubles due to color bleeding and anxiety about the coloring of underwear.

[0086] As another aspect of this embodiment, the colored fiber 31 may be a fiber itself that has a color. In other words, the colored fiber 31 may not be a fiber that has been colored with paint, but may be a fiber itself that has a color. That is, the fiber material (e.g., resin) itself has a color. Therefore, the color of the colored fiber 31 before use is easily maintained even during and after use. As a result, even after use, the colored fiber 31 allows the user to enjoy the color variations of the absorbent article 1, and can suppress negative feelings regarding excrement, and the non-colored fiber 32 makes it easier to grasp the absorption state of excrement that has migrated to the lower layer. And, when the absorbent article 1 is a sanitary napkin, it is easier to grasp the timing of replacement.

[0087] As another aspect of this embodiment, the colored fiber 31 may include a plurality of colored fibers having colored portions of different colors. That is, a plurality of colored fibers of different colors are present as the colored fiber 31. Therefore, the color variations of the absorbent article 1 can be further enjoyed by the colored fibers 31, and negative feelings related to excrement can be further suppressed. However, the different colors are separated from each other by one or more colors on the Ostwald color wheel (Ostwald color system), preferably by two or more colors, and more preferably by three or more colors.

[0088] In a preferred embodiment of the present invention, the top sheet 12 of the absorbent article 1 is made of a nonwoven fabric for the top sheet. The nonwoven fabric for the top sheet is formed by defibrating and mixing a fiber web of heat-fusible colored fibers and a fiber web of heat-fusible non-colored fibers, and using an air-through method. Therefore, the fiber density of the nonwoven fabric is likely to be low. Therefore, when the nonwoven fabric is used as the top sheet of the absorbent article 1, the lower layer of the top sheet is easily visible, and the state before use is easily maintained even during and after use. As a result, even after use, the colored fibers 31 allow the user to enjoy the color variations of the absorbent article 1, and negative feelings regarding excrement can be suppressed, and the non-colored fibers make it easy to grasp the absorption state of excrement that has migrated to the lower layer. And, when the absorbent article 1 is a sanitary napkin, it is easy to grasp the timing of replacement.

[0089] The absorbent article and nonwoven fabric for top sheet of the present invention are not limited to the above-mentioned embodiments, and appropriate combinations and modifications of the techniques described in the respective embodiments and known techniques are possible within the scope that does not deviate from the purpose and intent of the present invention. [Explanation of symbols]

[0090] 1. Absorbent articles 12 Top sheet 14 Absorber 31 Colored Fibers 32 Non-colored fibers

Claims

1. An absorbent article comprising a top sheet and an absorbent body located on a non-skin side of the top sheet, the absorbent article having a colored portion, The top sheet is a nonwoven fabric in which colored fibers having the colored portions and non-colored fibers not having the colored portions are mixed. Absorbent articles.

2. The top sheet is A highly colored region in which the fiber density of the colored fibers is higher than the fiber density of the non-colored fibers; A low-colored region in which the fiber density of the colored fibers is lower than the fiber density of the non-colored fibers; Including, The absorbent article of claim 1.

3. The fiber diameter of the colored fiber is larger than the fiber diameter of the non-colored fiber.

3. The absorbent article according to claim 1 or 2.

4. The colored fibers and the non-colored fibers are heat-fusible fibers, The nonwoven fabric is an air-through nonwoven fabric.

3. The absorbent article according to claim 1 or 2.

5. The colored fibers and the non-colored fibers are heat-fusible fibers, The ratio of the tensile strength of the top sheet in the longitudinal direction to the tensile strength of the top sheet in the width direction is 1 to 6.

3. The absorbent article according to claim 1 or 2.

6. The top sheet has a functional agent disposed on a skin-facing surface and / or a non-skin-facing surface, The color of the colored portion includes a color associated with the functional agent.

3. The absorbent article according to claim 1 or 2.

7. The absorbent body is provided with a cooling agent disposed on the surface facing the skin and / or inside the absorbent body, The color of the colored portion includes blue.

3. The absorbent article according to claim 1 or 2.

8. The absorbent body is provided with a Daun Sirih extract disposed on the surface facing the skin and / or inside, The color of the colored portion includes green.

3. The absorbent article according to claim 1 or 2.

9. Further comprising a second sheet located between the top sheet and the absorbent body, The second seat is white.

3. The absorbent article according to claim 1 or 2.

10. The colored fibers and the non-colored fibers are heat-fusible fibers, In the nonwoven fabric, the colored fibers, the uncolored fibers, and / or the colored fibers and the uncolored fibers are fused to each other at intersections.

3. The absorbent article according to claim 1 or 2.

11. The colored fiber is a sheath-core fiber, The colored portion is provided only in the core of the sheath-core fiber.

3. The absorbent article according to claim 1 or 2.

12. The colored fiber is a fiber itself having color.

3. The absorbent article according to claim 1 or 2.

13. The colored fiber includes a plurality of colored fibers having colored portions of different colors.

3. The absorbent article according to claim 1 or 2.

14. A nonwoven fabric for a top sheet of an absorbent article, comprising: An air-through nonwoven fabric formed by defibrating and mixing a fiber web of heat-fusible colored fibers and a fiber web of heat-fusible non-colored fibers and using an air-through method. Nonwoven fabric for top sheet.

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