JP2020074821A - Absorbent article - Google Patents

Abstract

To provide an absorbent article having a function enabling knowing from the outside that a wearer sweats.SOLUTION: An exterior body comprises any one of the following (A) to (C), and (a) to (c). (A) a configuration including an inner layer sheet comprising thermoplastic fibers at the skin side of a wearer, an outer layer sheet comprising thermoplastic fibers at the non-skin side, and a cellulose fiber-containing sheet disposed between the inner layer sheet and the outer layer sheet; (B) a configuration including an inner layer sheet comprising thermoplastic fibers at the skin side of the wearer, an outer layer sheet comprising thermoplastic fibers at the non-skin side, and a cellulose fiber-containing sheet disposed at the skin side of the wearer from the inner layer sheet; and (C) a configuration including an inner layer sheet comprising a thermoplastic fiber portion and a cellulose fiber portion at the skin side of the wearer, and an outer layer sheet comprising thermoplastic fibers at the non-skin side. (a) a brightness is N9.0; (b) a color tone is R, YR or Y, a brightness is V8 or less, and a color saturation is C3 or more; and (c) a color tone is GY, G, BG, B, PB, P or RP.SELECTED DRAWING: Figure 2

Description

  The present invention relates to absorbent articles.

  An absorbent article represented by a disposable diaper includes an absorbent body that absorbs excrement, and an exterior body that holds the absorbent body at a predetermined position of the wearer. The exterior body is often composed of a non-woven sheet mainly composed of hydrophobic fibers so as to prevent leakage of excrement. However, leakage may occur due to changes in the posture of the wearer. Therefore, various disposable diapers having a function of notifying that the diaper gets wet with excrement have been proposed. For example, one containing a pH indicator that discolors when urine reaches the surface of the absorber opposite to the wearer contact surface, and one that contains a drug that discolors when wetted with water are known.

  In addition, a disposable diaper in which a liquid-diffusing fiber sheet for absorbing leaked excrement is arranged between the breathable sheets on the skin side and the outer side of the wearer has also been proposed (Patent Document 1). The liquid diffusion sheet is bonded to the breathable sheet on the outside and the breathable sheet on the wearer side through the thread rubber, respectively, but the adhesive is applied not on the entire surface of the sheet but on the non-bonded portion. By providing the diaper, it is said that the diaper is kept breathable and moisture permeable (Patent Document 1).

International publication WO2016 / 093371

  However, an absorbent article having a function of notifying stuffiness in a diaper or perspiration, which is a major cause of rash, has not yet been known.

  Then, this invention makes it a subject of an invention to provide the absorptive article which can recognize that a wearer is sweating from the exterior.

That is, the present invention is an absorbent article including an absorber and an exterior body that holds the absorber, wherein the exterior body has any one of the following configurations (A) to (C): The difference in total light transmittance in the thickness direction between moisture absorption and drying is 5% or more, and the color of the outer package is one of the following (a) to (c) in the Munsell system. It is an absorbent article.
(A) A wearer's skin-side inner layer sheet made of thermoplastic fibers, a non-skin side outer layer sheet made of thermoplastic fibers, and a cellulose fiber-containing sheet arranged between the inner layer sheet and the outer layer sheet. Equipped configuration,
(B) A wearer's skin-side inner layer sheet made of thermoplastic fibers, a non-skin side outer layer sheet made of thermoplastic fibers, and a cellulose fiber-containing sheet arranged closer to the wearer's skin side than the inner layer sheet. A configuration with
(C) A structure comprising an inner layer sheet on the skin side of the wearer, which comprises a thermoplastic fiber portion and a cellulose fiber portion, and an outer layer sheet on the non-skin side, which comprises a thermoplastic fiber (a) the lightness is N9.0 ( White)
(B) Hue is R (red), YR (yellow red) or Y (yellow), lightness V8 or less, and saturation C3 or more (c) Hue is GY (yellow green), G (green), BG ( (Blue-green), B (blue), PB (blue-violet), P (purple) or RP (magenta)

  The absorbent article of the present invention is configured such that the skin color of the wearer can be visually recognized from the outside when sweating, so that the wearer can recognize sweating from the outside of the diaper. It can suppress sweating and prevent the occurrence of rashes and the like.

It is a perspective view of the tape type disposable diaper 1 which is an example of an absorbent article. FIG. 7 is a cross-sectional view of the example outer body 13 taken along the line AA ′. FIG. 11 is a cross-sectional view of another example of the outer package 13 taken along the line AA ′. It is a figure showing pants type disposable diaper 2, (a) is a perspective view, (b) is a deployment top view seen from the skin side. FIG. 9 is a cross-sectional view of the outer package 23 taken along the line AA ′. FIG. 9 is a cross-sectional view of the outer package 23 taken along the line AA ′.

  Hereinafter, a tape type disposable diaper that is an embodiment of an absorbent article according to the present invention will be described with reference to the drawings. As shown in FIG. 1, the tape-type disposable diaper 1 according to the present embodiment includes an absorber 12 that absorbs excrement of the wearer and an exterior body 13 that holds the absorber 12 at a predetermined position of the wearer. Prepare Other examples of absorbent articles include pants-type disposable diapers, split-type disposable diapers, and disposable sanitary shorts as shown in FIG.

  As shown in FIG. 2, the outer casing 13 includes a skin side inner layer sheet 131, a non-skin side or outer side outer layer sheet 132, and a cellulose fiber-containing sheet 133 provided between the inner layer sheet 131 and the outer layer sheet 132. With. The inner layer sheet 131 and the outer layer sheet 132 are each a thermoplastic sheet.

  In the present embodiment, the cellulose fiber-containing sheet 133 is joined to the inner layer sheet 131 via the inner layer joining portions 134a, 134b and 134c, and is joined to the outer layer sheet 132 via the outer layer joining portions 134d and 134e. The inner layer joint portion and the outer layer joint portion are both referred to as a joint portion 134. The cellulose fiber-containing sheet 133 may be provided in at least a part of the exterior body 13, and may be any part such as the back side part 13a, the abdominal side part 13b, the back side waistline part 13c, the abdominal side waistline part 13d. .. From the viewpoint of easily recognizing sweating, it is preferable that at least the back waistline portion 13c is provided.

The outer casing 13 has a total light transmittance difference of 5% or more in the thickness direction between moisture absorption and drying, and a color satisfying any of the following (a) to (c) in the Munsell color system. Present.
(A) Brightness is N9.0 (white)
(B) Hue is R (red), YR (yellow red) or Y (yellow), lightness V8 or less and chroma C3 or more. (C) Hue is GY (yellow green), G (green), BG ( (Blue-green), B (blue), PB (blue-violet), P (purple) or RP (magenta)

  In the disposable diaper (hereinafter, also simply referred to as a diaper) 1 of the present embodiment according to the present embodiment, the cellulose fiber-containing sheet 133 can be recognized from the outside when dried. When the exterior body 13 absorbs moisture due to sweat, the light transmittance of the exterior body 13 is increased and the color of the skin of the wearer can be seen through, so that the wearer's sweating can be recognized from the outside.

  That is, during drying, air exists between the cellulose fibers or between the cellulose fibers and the other fibers of the thermoplastic fibers. Since the refractive index of the cellulose fiber is about 1.55 and the refractive index of air is about 1.0, light is reflected between the cellulose fiber and the cellulose fiber. When the cellulose fiber-containing sheet 133 absorbs moisture, moisture is retained between the cellulose fibers. Since the refractive index of water is about 1.3, the reflected light is less than when it is dry. In the present invention, the exterior body has a difference in total light transmittance of 5% or more in the thickness direction between when absorbing moisture and when drying, and is configured to exhibit a color satisfying any of the above (a) to (c9). When the exterior body absorbs moisture, the total light transmittance of the cellulose fiber-containing sheet 133 increases, and the total light transmittance of the exterior body 13 increases, so that the skin color of the wearer can be seen through and the wearer's skin color can be seen. Perspiration can be recognized from the outside.

  In the present invention, the total light transmittance in the thickness direction is determined according to JIS K7375: 2008 "Plastics-Method for obtaining total light transmittance and total light reflectance" using NDH5000 turbidity system of Nippon Denshoku Industries Co., Ltd. According to this, the entire outer package 13 is measured. When the outer package 13 includes an elastic body as described below, the elastic body is measured in the maximum stretched state. In addition, when the structure of the outer package 13 is not uniform and the number of laminated layers is different, the measurement is performed on the portion having the smallest number of laminated layers including the cellulose fiber-containing portion.

  After the sample piece of the outer package is dried in a desiccator for a whole day and night, the total light transmittance is measured at the time of drying in a room of constant temperature and humidity of 20 ° C. and 50% RH to obtain the total light transmittance at the time of drying. The total light transmittance when dried is preferably 70% or less. Further, the color of the outer package 13 at the time of drying is preferably C6 or more in the Munsell color system. In order to measure the total light transmittance when absorbing moisture, the following sample is prepared. After maximally elongating the test piece, the test piece is cut into 10 cm × 10 cm, and 100 drops of 400 μL of pure water is dropped by a pipette to obtain a sample when absorbing moisture.

  The total light transmittance of this sample is measured in a room at a constant temperature and humidity of 20 ° C. and 50% RH, and the total light transmittance at this time is defined as the total light transmittance when absorbing moisture. Even when measuring the total light transmittance, the sample is stretched to the maximum extent. Then, (total light transmittance during moisture absorption-total light transmittance during drying) (%) is obtained. The total light transmittance in the thickness direction of the exterior body 13 when absorbing moisture is higher by at least 5% than when drying. The difference in total light transmittance in the thickness direction is preferably 10% or more, more preferably 15% or more. The upper limit of the difference in total light transmittance is preferably 40% or less, more preferably 35% or less.

Further, in order to grasp the improvement of the light transmittance due to the moisture absorption of the diaper 1 by the change of the appearance, it is confirmed by at least 11 test subjects visually. It is desirable that the test subject have an average visual acuity and not hyperopia or presbyopia.
For confirmation, a sample (10 cm × 10 cm) at the time of drying and moisture absorption and a black plastic flat plate larger than the sample are prepared. This plastic flat plate imitates actual skin. The sample is attached to a plastic flat plate with the sample stretched to the maximum extent. The fact that the black color of the flat plate is visible through the sample corresponds to the improved see-through feeling of the diaper and the appearance of the skin color. The dried sample and the moisture-absorbed sample that are brought into close contact with the flat plate are compared from a position 20 cm apart, and the black appearance of the flat plate through which the sample is seen is compared. If more than half of the subjects can recognize that they are easier to see, it can be said that there is a difference in light transmissivity.

The inner layer sheet 131, the outer layer sheet 132, and the cellulose fiber-containing sheet 133 will be described in detail below.
The colors of the inner layer sheet 131, the outer layer sheet 132, and the cellulose fiber-containing sheet 133 do not have to be the same, and each sheet may be colored differently from other sheets. The color of each sheet is not limited to a single color, and may be partially colored. Examples include colored designs. Characters are also included in the design, and there are also cases where the drawings and characters are combined. As described above, the outer casing 13 has improved light transmittance due to moisture absorption. Since the colors of the members forming the outer casing 13 are partially different, the moisture absorption state can be more reliably visually recognized.

  The inner layer sheet 131 and the outer layer sheet 132 may be the same thermoplastic resin or different thermoplastic resins. Examples of the thermoplastic fat sheet include a thermoplastic fiber sheet and a thermoplastic fiber composite sheet. Examples of the thermoplastic fiber include polyethylene fiber, polypropylene fiber, polyethylene / polypropylene composite fiber, polyethylene terephthalate fiber, polybutylene terephthalate fiber, and polyamide fiber. Among these, polyethylene fiber, polypropylene fiber, and these and other fibers, For example, a combination of rayon, polyethylene terephthalate fiber, polybutylene terephthalate fiber and the like is preferable.

  Examples of the thermoplastic fiber sheet include spunbonded non-woven fabrics, thermal bond non-woven fabrics, air-through non-woven fabrics and spunlaced non-woven fabrics of the above fibers, and among them, spun-bonded non-woven fabrics and air-through non-woven fabrics are preferable. In particular, a spunbonded nonwoven fabric is preferable from the viewpoint of sheet thinness. Further, these may be stretched, waterproofed or the like.

  The thermoplastic fiber composite sheet is a composite sheet of one or more thermoplastic fiber sheets and another material. An example of another preferable material is an elastic material, and a plurality of elastic filaments arranged in one direction, for example, described in JP 2008-179128 A, are substantially in an unstretched state over their entire length, An example is a sheet having excellent stretchability, which is formed by joining two stretchable nonwoven fabrics. The non-woven fabric may be the non-woven fabric of the thermoplastic fibers described above. The elastic filament is made of a thread-like thermoplastic elastomer or rubber, and examples thereof include SEBS (styrene-ethylene-butadiene-styrene), SEPS (styrene-ethylene-propylene-styrene), natural rubber, and synthetic rubber.

The basis weight of the thermoplastic fiber sheet or thermoplastic fiber composite sheet, in view of an appropriate light transmittance and breathability, is preferably 5 to 50 g / m ^2, more preferably 7 g / m ² or more 45 g / m ^{It is 2} or less, and most preferably 10 g / m ² or more and 40 g / m ² or less. That is, the lower limit of the basis weight is preferably 5 g / m ² , more preferably 7 g / m ² , and most preferably 10 g / m ² . The upper limit of the basis weight is preferably 50 g / m ² , more preferably 45 g / m ² , and most preferably 40 g / m ² . The relationship between the grammage of the inner layer sheet 131 and the outer layer sheet 132 is not particularly limited, but sweat is transferred from the inner layer sheet 131 to the cellulose fiber-containing sheet 133, and the outer layer sheet 132 is the inner layer sheet 131 from the viewpoint of dew prevention. It is preferable that the basis weight is higher.

  The cellulose fiber-containing sheet 133 between the inner layer sheet 131 and the outer layer sheet 132 contains cellulose fibers such as wood pulp, recycled pulp, chemical pulp, cotton, and rayon. You may use these cellulose fibers in combination of 2 or more types. Wood pulp, recycled pulp, and chemical pulp are preferable because they have high hygroscopicity and are easily processed. The cellulose fiber-containing sheet 133 is a sheet containing at least 7% by mass, preferably 10% by mass or more of cellulose fibers. The upper limit of the content of cellulose fibers is preferably 100% by mass.

  As the cellulose fiber-containing sheet 133, use is made of spunlace composed of cellulose and thermoplastic fibers, paper obtained by making cellulose fibers into paper, cloth obtained by spinning cellulose fibers and then woven, or a combination thereof. And preferably paper is used. Various processes may be applied to the paper or the cloth. Examples of such processing include antibacterial processing. Further, a plurality of sheets of paper, cloth, or a combination thereof can be used as the cellulose fiber-containing sheet 133.

Cellulosic fiber-containing sheet 133 is preferably an apparent density of 0.008 g / cm ³ or more, more preferably 0.010 g / cm ³ or more, and most preferably 0.012 g / cm ³ or more. When the apparent density is the above value or more and the basis weight of the thermoplastic fiber sheet or the thermoplastic fiber composite sheet is in the above range, the difference in the total light transmittance in the thickness direction between when absorbing moisture and when drying is 5%. It is easy to be above.
The apparent density of the cellulose fiber-containing sheet 133 is preferably 0.2 g / cm ³ or less, more preferably 0.15 g / cm ³ or less, and most preferably 0.1 g / cm ³ or less. When the apparent density is not more than the above value, it is advantageous in that the light transmittance is easily improved when absorbing moisture and the skin color is more transparent and easy to see.

  At least a part of the color of the cellulose fiber-containing sheet 133 is preferably different from the colors of the inner layer sheet 131 and / or the outer layer sheet 132, and more preferably different from both of the inner layer sheet 131 and the outer layer sheet 132. .. Since the color at the time of moisture absorption becomes darker than that at the time of drying, it is possible to more easily visually recognize the color change due to moisture absorption.

  The cellulose fiber-containing sheet 133 may have a colored pattern. The color of the pattern may be a Munsell color system, a hue other than YR (yellow red) or Y (yellow), and a saturation of C3 or more and C14 or less. In this case, since it is bright and has a certain degree of color when dried, the pattern is thick and floats easily when it absorbs moisture. The color of the design may be that of the Munsell color system and the hue of which includes BG (blue green), B (blue) or BP (blue violet). In this case, the visibility of the design at the time of drying can be improved.

  The pattern can be colored by a known printing method, such as an inkjet method, a gravure method, or a screen method, using a dye-based or pigment-based oil-based ink. Although depending on the thickness of the cellulose fiber-containing sheet 133 and the like, it is desired that a predetermined amount of the cellulose fibers be colored so as not to impede the moisture absorption of the cellulose fibers. 0.01% or more of the total mass of the cellulose fibers is preferably colored, and more preferably 0.05% or more. The colored cellulose fiber is preferably 80% or less of the total mass, more preferably 60% or less.

  As shown in FIG. 2, by arranging the cellulose fiber-containing sheet 133 between the inner layer sheet 131 and the outer layer sheet 132, it is possible to recognize moisture absorption based on a change in pattern or color. The outer layer sheet 132 and the cellulose fiber-containing sheet 133 are partially joined to each other via outer layer joining portions 134d and 134e. Since the outer layer sheet 132 and the cellulose fiber-containing sheet 133 are close to each other, visibility is ensured. When the outer layer joint portions 134d and 134e are provided on the pattern of the cellulose fiber-containing sheet 133, the visibility during drying becomes easy.

  Since the inner layer sheet 131 and the cellulose fiber-containing sheet 133 are partially joined via the inner layer joining portions 134a, 134b, 134c, these sheets are in close contact with each other. When the light transmittance is increased during moisture absorption, it becomes easier to recognize the skin color from the outside. When the inner layer joints 134a, 134b, 134c are provided on the pattern of the cellulose fiber-containing sheet 133, the pattern becomes difficult to see when absorbing moisture, and the skin color becomes more prominent. In order to secure high visibility, it is preferable that the inner layer sheet 131, the cellulose fiber-containing sheet 133, and the outer layer sheet 132 adhere to each other, and the inner layer sheet 131 can adhere to the skin.

  The shape of the joint 134 between the cellulose fiber-containing sheet 133 and the inner layer sheet 131 and the outer layer sheet 132 may be any of a dot shape, a linear shape, a spiral shape, an Ω shape, or a planar shape. Preferably, the joint portion 134 is a regular pattern, for example, a plurality of dots existing in a grid pattern, and a hexagonal line. As described above, the joint portion 134 is provided on the pattern of the cellulose fiber-containing sheet 133. Is more preferable.

  The cellulosic fiber-containing sheet 133 is joined to the inner layer sheet 131 and the outer layer sheet 132 by thermal joining such as heat sealing, mechanical joining such as stitching, chemical joining by an adhesive, ultrasonic joining, or a combination thereof. You may. Adhesive bonding is preferred. Examples of the adhesive include water-soluble adhesives, solvent-based adhesives, hot melt adhesives, epoxy adhesives, silicone adhesives, urethane adhesives, and the like, and of these, hot melt adhesives are preferable.

  The hot-melt adhesive is one in which a base polymer is melted by heating and applied to an object, then cooled and solidified to adhere the object. Examples of the base polymer include ethylene-vinyl acetate copolymer-based adhesives, styrene-butadiene-based (SBS) and other synthetic rubber-based adhesives, water-soluble polymer-based adhesives such as vinyl acetate-based polymers, starch, gelatin, and polyvinyl alcohol. Etc. A styrene-butadiene based hot melt adhesive is preferably used.

  The position of the cellulose fiber-containing sheet 133 in the outer package 13 is not limited to the position between the inner sheet 131 and the outer sheet 132, and may be arranged on the skin side of the inner layer sheet 131 as shown in FIG. Since the cellulose fiber-containing sheet 133 absorbs sweat directly, even a small amount of sweat can change the light transmittance of the sheet. Such a configuration is effective in the abdominal waistline portion 13d (see FIG. 1) and the like in which the amount of sweat is relatively small. The cellulose fiber-containing sheet 133 can increase the amount of cellulose fibers by being provided separately from the inner layer sheet 131, which leads to an increase in the difference in total light transmittance between when moisture is absorbed and when it is dried.

  The cellulose fibers may be included in the outer package 13 as a part of the inner layer sheet, instead of as a single sheet. That is, it is an inner layer sheet on the skin side of the wearer, which comprises a thermoplastic fiber portion and a cellulose fiber portion. Also in this case, since the sweat can be directly absorbed, the transmittance is likely to change even with a small amount of sweat, and the moisture absorption is easily visible. Therefore, it is particularly effective in the abdominal waistline portion 13d (see FIG. 1) where the amount of sweat is relatively small. Since the number of sheets is reduced by integrating the cellulose fiber-containing sheet and the inner layer sheet, there is also an advantage that the cost is reduced.

  The inner layer sheet composed of a thermoplastic fiber portion and a cellulose fiber portion has, for example, a pulp disposed between two layers of a thermoplastic fiber web as described in JP 2009-34441 A, and a columnar water jet is jetted. A spunlace nonwoven fabric obtained by the above is included. The content of cellulose fibers is preferably 10% or more and 90% or less of the total mass, and more preferably 12% or more and 80% or less. That is, the content of cellulose fibers is preferably 10% or more, and more preferably 12% or more of the total mass. Further, the content of the cellulose fibers is preferably 90% or less of the total mass, and more preferably 80% or less. When the cellulose fibers are contained in such an amount, the difference in total light transmittance between when moisture is absorbed and when it is dried is likely to be 5% or more.

  The absorbent article of the present invention may further include an elastic body 235 (Figs. 235a to 5c) in the exterior body 23 like the pants-type disposable diaper 2 shown in Fig. 4. The elastic bodies 235a to 235c are arranged between the inner layer sheet 231 and the outer layer sheet 232 such that the extending direction thereof is along the waistline direction. The elastic bodies 235a to 235c have joints with the cellulose fiber-containing sheet 233 at least on both side portions S. Bonding in this case is preferably performed by the hot melt adhesive.

  Examples of the elastic bodies 235a to 235c include thread rubbers such as natural rubber, butadiene rubber, styrene-butadiene rubber, and urethane rubber, flat rubber, and elastic sheets including filaments. Of these, thread rubber is preferable. The thread rubber has a lower limit of the fineness of preferably 300 dtex, more preferably 400 dtex, and an upper limit of 1300 dtex, more preferably 1200 dtex. The lower limit of the pitch between the rubber threads is preferably 2 mm, more preferably 3 mm, and the upper limit is preferably 20 mm, more preferably 15 mm.

  The cellulose fiber-containing sheet 233 can be arranged between the inner layer sheet 231 and the elastic bodies 235a to 235c, as shown in FIG. The cellulose fiber-containing sheet 233 joined to the inner layer sheet 231 via the joining portions 234a to 234c is pressed against the skin side by the elastic bodies 235a to 235c. When the diaper 2 is in close contact with the skin, the color of the skin becomes easier to see and the visibility is improved. Such a configuration exerts an effect when the exterior body 23 is provided on the abdominal waistline portion 23d, which does not include the design. This is because the cellulose fiber-containing sheet 233 can be visually recognized only through the sheet without a pattern at a portion where the amount of sweat is small.

  The cellulose fiber-containing sheet 233 may be arranged between the elastic bodies 235a to 235c and the outer layer sheet 232, as shown in FIG. The cellulose fiber-containing sheet 233 is joined to the elastic bodies 235a to 235c by the joining portions 234a to 234c and is joined to the outer layer sheet 232 via the joining portions 234d and 234e. A hot melt adhesive is preferably used for joining. The presence of the elastic bodies 235a to 235c makes it difficult for a space to be created between the cellulose fiber-containing sheet 233 and the outer layer sheet 232. As a result, the visibility of the pattern of the cellulose fiber-containing sheet 233 is improved. It is effective to provide such a structure on the back waistline portion 23c, which is a portion including many patterns. A pattern is added to a portion having a large amount of sweat in order to improve visibility. This is because sweat is particularly easy to scratch on the back waistline portion 23c.

Regarding the above-described embodiment, the present invention further discloses the following absorbent articles.
<1> An absorbent article comprising an absorbent body and an exterior body holding the absorbent body,
The exterior body is formed of any one of the following (A) to (C), and has a difference of 5% or more in total light transmittance in a thickness direction between moisture absorption and drying.
The color of the outer package is one of the following (a) to (c) in the Munsell system.
(A) A wearer's skin-side inner layer sheet made of thermoplastic fibers, a non-skin side outer layer sheet made of thermoplastic fibers, and a cellulose fiber-containing sheet arranged between the inner layer sheet and the outer layer sheet. Equipped configuration,
(B) A wearer's skin-side inner layer sheet made of thermoplastic fibers, a non-skin side outer layer sheet made of thermoplastic fibers, and a cellulose fiber-containing sheet arranged closer to the wearer's skin side than the inner layer sheet. A configuration with
(C) A configuration including an inner layer sheet on the skin side of the wearer made of a thermoplastic fiber portion and a cellulose fiber portion, and a non-skin side outer layer sheet made of a thermoplastic fiber. (A) The lightness is N9.0 ( White)
(B) Hue is R (red), YR (yellow red) or Y (yellow), lightness V8 or less and chroma C3 or more. (C) Hue is GY (yellow green), G (green), BG ( (Blue-green), B (blue), PB (blue-violet), P (purple) or RP (magenta)
<2> The absorbent article according to <1>, wherein the exterior body has a total light transmittance of 70% or less when dried.
<3> The absorbent article according to <1> or <2>, wherein the outer package has a difference in total light transmittance in the thickness direction between moisture absorption and drying of 10% or more.
<4> The absorbent article according to <3>, wherein the outer package has a difference in total light transmittance in the thickness direction between moisture absorption and drying of 15% or more.
<5> The absorbent article according to any one of the above items <1> to <4>, wherein a difference in total light transmittance in a thickness direction between moisture absorption and drying is 40% or less.
<6> The absorbent article according to <5>, wherein the outer package has a difference in total light transmittance in the thickness direction between when absorbing moisture and when drying, of 35% or less.
<7> The absorbent article according to any one of <1> to <6>, wherein the cellulose fiber-containing sheet contains at least one selected from wood pulp, recycled pulp, and chemical pulp.
<8> The absorbent article according to any one of <1> to <7>, which has the configuration of (A) or (B).
<9> The absorbent article according to <8>, wherein the cellulose fiber-containing sheet contains at least 7% by mass of cellulose fibers.
<10> The absorbent sheet according to <9>, wherein the cellulose fiber-containing sheet contains at least 10% by mass of the cellulose fiber.
<11> The absorbent article according to <9> or <10>, wherein the cellulose fiber-containing sheet contains 100% by mass of the cellulose fiber.
<12> The absorbent article according to any one of <8> to <11>, wherein the cellulose fiber-containing sheet has an apparent density of 0.010 g / cm ³ or more.
<13> The absorbent article according to <12>, wherein the cellulose fiber-containing sheet has an apparent density of 0.012 g / cm ³ or more.
<14> The absorbent article according to any one of <8> to <13>, wherein the cellulose fiber-containing sheet has an apparent density of 0.2 g / cm ³ or less.
<15> The absorbent article according to <14>, wherein the cellulose fiber-containing sheet has an apparent density of 0.15 g / cm ³ or less.
<16> The absorbent article according to <15>, wherein the cellulose fiber-containing sheet has an apparent density of 0.1 g / cm ³ or less.
<17> The absorbent article according to any one of the above <8> to <16>, wherein at least a part of the color of the cellulose fiber-containing sheet is different from that of both the inner layer sheet and the outer layer sheet.
<18> The absorbent article according to any one of <8> to <17>, in which 0.01% or more of the total mass of the cellulose fiber is colored.
<19> The absorbent article according to <18>, in which 0.05% or more of the total mass of the cellulose fibers is colored.
<20> The absorbent article according to any one of <8> to <19>, in which 80% or less of the total mass of the cellulose fiber is colored.
<21> The absorbent article according to <20>, in which 60% or less of the total mass of the cellulose fiber is colored.
<22> The absorbent article according to any one of <8> to <21>, wherein the cellulose fiber-containing sheet is paper, and at least a part thereof has a joint portion with the outer layer sheet or the inner layer sheet. ..
<23> The absorbent article according to <22>, wherein the joint portion is made of a hot melt adhesive.
<24> The absorbent article according to any one of <8> to <23>, wherein the outer package further includes an elastic body.
<25> The absorbent article according to <24>, wherein the elastic body is rubber thread.
<26> The absorbent article according to <24> or <25>, wherein the elastic body is provided between the outer layer sheet and the cellulose fiber-containing sheet.
<27> The absorbent article according to <24> or <25>, in which the elastic body is arranged between the inner layer sheet and the cellulose fiber-containing sheet.
<28> The absorbent article according to <27>, wherein the cellulose fiber-containing sheet is arranged between the elastic body and the outer layer sheet.
<29> The absorbent according to <27> or <28>, wherein the cellulose fiber-containing sheet is joined to the elastic body with a hot melt adhesive, and is joined to the inner layer sheet via the elastic body. Goods.
<30> The absorbent article according to any one of <8> to <29>, wherein the inner layer sheet and the outer layer sheet are spunbond nonwoven fabrics.
<31> The absorbent article according to any one of <8> to <29>, wherein the inner layer sheet and the outer layer sheet are air-through nonwoven fabrics.
<32> The absorbent article according to any one of <8> to <31>, wherein the inner layer sheet and the outer layer sheet are thermoplastic fiber sheets or thermoplastic fiber composite sheets.
<33> The absorbent article according to <32>, wherein the thermoplastic fiber sheet or the thermoplastic fiber composite sheet has a basis weight of 5 g / m ² or more.
<34> The absorbent article according to <33>, wherein the basis weight of the thermoplastic fiber sheet or the thermoplastic fiber composite sheet is 7 g / m ² or more.
<35> The absorbent article according to <34>, wherein the thermoplastic fiber sheet or the thermoplastic fiber composite sheet has a basis weight of 10 g / m ² or more.
<36> The absorbent article according to any one of <32> to <35>, in which a basis weight of the thermoplastic fiber sheet or the thermoplastic fiber composite sheet is 50 g / m ² or less.
<37> The absorbent article according to <36>, wherein the thermoplastic fiber sheet or the thermoplastic fiber composite sheet has a basis weight of 45 g / m ² or less.
<38> The absorbent article according to <37>, wherein the thermoplastic fiber sheet or the thermoplastic fiber composite sheet has a basis weight of 40 g / m ² or less.
<39> The absorbent article according to any one of <8> to <38>, in which a basis weight of the outer layer sheet is higher than a basis weight of the inner layer sheet.
<40> The absorbent article according to any one of <1> to <7>, which has the configuration (C).
<41> The absorbent article according to <40>, wherein the inner layer sheet is a spunlace nonwoven fabric obtained by arranging pulp between two layers of thermoplastic fiber web and jetting a columnar water stream.
<42> The absorbent article according to <40> or <41>, in which the content of the cellulose fibers in the inner layer sheet is 10% or more of the total mass of the inner layer sheet.
<43> The absorbent article according to <42>, wherein the content of the cellulose fibers in the inner layer sheet is 12% or more of the total mass of the inner layer sheet.
<44> The absorbent article according to any one of <40> to <43>, in which the content of the cellulose fibers in the inner layer sheet is 90% or less of the total mass of the inner layer sheet.
<45> The absorbent article according to <44>, wherein the content of the cellulose fibers in the inner layer sheet is 80% or less of the total mass of the inner layer sheet.

  Since the absorbent article of the present invention can recognize sweating from the outside, it is possible to appropriately adjust the room temperature and clothes to prevent the discomfort of stuffiness and rash.

DESCRIPTION OF SYMBOLS 1 Tape type disposable diaper 2 Pants type disposable diaper 12,22 Absorber 13,23 Outer package 131,231 Inner layer sheet 132,232 Outer layer sheet 133,233 Cellulose fiber containing sheet 134a-e, 234a-e Joint part 235a-c Elasticity body

Claims (12)

An absorbent article comprising an absorbent body and an exterior body holding the absorbent body,
The exterior body is formed of any one of the following (A) to (C), and has a difference of 5% or more in total light transmittance in a thickness direction between moisture absorption and drying.
The color of the outer package is one of the following (a) to (c) in the Munsell system.
(A) A wearer's skin-side inner layer sheet made of thermoplastic fibers, a non-skin side outer layer sheet made of thermoplastic fibers, and a cellulose fiber-containing sheet arranged between the inner layer sheet and the outer layer sheet. Equipped configuration,
(B) A wearer's skin-side inner layer sheet made of thermoplastic fibers, a non-skin side outer layer sheet made of thermoplastic fibers, and a cellulose fiber-containing sheet arranged closer to the wearer's skin side than the inner layer sheet. A configuration with
(C) A configuration including an inner layer sheet on the skin side of the wearer made of a thermoplastic fiber portion and a cellulose fiber portion, and a non-skin side outer layer sheet made of a thermoplastic fiber. (A) The lightness is N9.0 ( White)
(B) Hue is R (red), YR (yellow red) or Y (yellow), lightness V8 or less and chroma C3 or more. (C) Hue is GY (yellow green), G (green), BG ( (Blue-green), B (blue), PB (blue-violet), P (purple) or RP (magenta) When the outer package has the configuration (A) or (B), at least one of the inner layer sheet, the outer layer sheet, and the cellulose fiber-containing sheet in the outer package is at least partially in another part or another. Has a different color than the seat,
When the said exterior body is a structure (C), at least one of the said inner layer sheet and the said outer layer sheet in the said exterior body has a color different from other parts or other sheets in at least one part. The absorbent article according to. When the exterior body has the configuration (A) or (B), at least a part of the color of the cellulose fiber-containing sheet is different from the inner layer sheet and the outer layer sheet,
The absorbent article according to claim 1 or 2, wherein when the exterior body has the configuration (C), at least a part of the color of the inner layer sheet is different from that of the outer layer sheet.   The absorbent article according to claim 3, wherein the exterior body has a configuration (A) or (B), and the cellulose fiber-containing sheet has a colored pattern.   The absorbent article according to claim 4, wherein the color of the design is Munsell color system, the hue is YR (yellow red) or other than Y (yellow), and includes saturation C3 or more and C14 or less.   The absorbent article according to claim 4, wherein the color of the pattern is Munsell color system and the hue includes BG (blue green), B (blue) or BP (blue violet).   The absorbent article according to any one of claims 1 to 6, wherein the cellulose fiber-containing sheet is arranged between the inner layer sheet and the outer layer sheet.   The absorbent article according to claim 7, wherein the cellulose fiber-containing sheet is partially bonded to the outer layer sheet by an outer layer bonding portion.   The absorbent article according to claim 8, wherein the outer layer joint portion is on the pattern of the cellulose fiber-containing sheet.   The absorbent article according to claim 7, wherein the cellulose fiber-containing sheet is partially bonded to the inner layer sheet by an inner layer bonding portion.   The absorbent article according to claim 10, wherein the inner layer joint portion is on the pattern of the cellulose fiber-containing sheet. The absorbent article according to claim 1, wherein the cellulose fiber-containing sheet has an apparent density of 0.008 g / cm ³ or more.

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