Unitary package absorbent article

Abstract

To make it hard for menstrual blood to be seen through from outside and make it hard for an absorbent article to be visually recognized from outside in an unitary package absorbent article where the absorbent article is individually housed in a package.SOLUTION: In a unitary package absorbent article where an absorbent article is housed in a package, the absorbent article configures a pants-type with a waist part and a crotch part where an absorber is arranged. An L* value of an L*a*b* color space of CIE 1976 when the absorbent article is seen from a non-skin surface side opposite a skin surface side facing a human body of the absorbent article is 40 or less; in the package, an L* value of the L*a*b* color space of CIE 1976 when seen from outside is 50 or less.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to individually packaged absorbent articles. [Background technology]

[0002] In recent years, shorts-type absorbent articles such as sanitary napkins have become known (see, for example, Patent Document 1). Shorts-type absorbent articles have an absorbent body but are shorts-shaped overall, so that they can be worn like shorts. For reasons such as ensuring hygiene during storage and improving convenience when carrying, such absorbent articles are sometimes distributed as individually packaged absorbent articles individually packed in packages. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2016-73511 A Summary of the Invention [Problem to be solved by the invention]

[0004] When an absorbent article is carried in a package, it is preferable that the absorbent article cannot be seen from the outside. Furthermore, when an absorbent article is disposed of after use, it may be disposed of in a package. In such a case, it is undesirable that menstrual blood can be seen from the outside.

[0005] The present invention has been made in consideration of the above-mentioned points, and aims to provide an individually packaged absorbent article in which absorbent articles are individually contained in a package, in which menstrual blood is difficult to see through from the outside and the absorbent articles are difficult to see from the outside. [Means for solving the problem]

[0006] In order to achieve the above object, the present invention provides An individually packaged absorbent article in which an absorbent article is contained in a package, The absorbent article is configured as a shorts type article including a waist portion and a crotch portion in which an absorbent body is disposed, and the absorbent article has a CIE1976 L * a * b * Color space L * The value is 40 or less, The package has a CIE 1976 L size when viewed from the outside. * a * b * Color space L * Individually packaged absorbent articles having a value of 50 or less.

[0007] In the present invention configured as described above, the CIE1976 L of the absorbent article when viewed from the non-skin-facing side opposite to the skin-facing side facing the human body of the absorbent article is * a * b * Color space L * By having a value of 40 or less, blood is less likely to be visible through the outside of the absorbent article after use. In addition, the L * Although the value is 40 or less, the L value when viewed from the outside of the package * By setting the value to 50 or less, the absorbent article becomes difficult to see from the outside when it is contained in a package.

[0008] The color of the packaging body when the absorbent article is not contained therein may be similar to the color of the absorbent article when viewed from the non-skin side when not contained in the packaging body. In such a configuration, the absorbent article becomes even more difficult to see from the outside when contained in the packaging body.

[0009] The color of the absorbent article as viewed from the non-skin side and the color of the packaging as viewed from the outside may be black or gray. Even in such a configuration, the absorbent article is further difficult to see from the outside when it is contained in the packaging.

[0010] In addition, the absorbent article has a CIE1976 L * a * b * Color space L * The package has a CIE 1976 L value of 40 or less when viewed from the outside in all areas. * a * b * Color space L * The value may be no greater than 50. In such a configuration, blood is less likely to be visible from the outside of the absorbent article after use in any region of the absorbent article, and the absorbent article is less likely to be visible from the outside in any region of the package when the absorbent article is contained in the package. Effect of the Invention

[0011] According to the present invention, in individually packaged absorbent articles in which absorbent articles are individually housed in a package, menstrual blood is less likely to be visible from the outside, and the absorbent articles are less likely to be visible from the outside. [Brief description of the drawings]

[0012] [Figure 1] FIG. 1 is a diagram showing one embodiment of an individually packaged absorbent article of the present invention. [Diagram 2] FIG. 2 is an external perspective view of the sanitary shorts shown in FIG. 1. [Diagram 3] FIG. 3 is a view of the sanitary shorts shown in FIG. 2 as seen from the skin side. [Figure 4] 4 is a cross-sectional view taken along the line AA in FIG. [Diagram 5] FIG. 3 is a diagram showing the sanitary shorts shown in FIG. 2 being worn. [Figure 6] FIG. 2 is a view of Comparative Example 1 as seen from the non-skin side after menstrual blood absorption. [Figure 7] FIG. 2 is a view of Example 1 as seen from the non-skin side after menstrual blood absorption. [Figure 8] 3 is a diagram showing a state in which the three-dimensional gathered portion protrudes from the exterior body in the menstrual shorts shown in FIG. 2. FIG. [Figure 9] 2A and 2B are diagrams showing an example of the configuration of the package shown in FIG. 1, in which (a) is a plan view and (b) is a view of the package when opened, as seen from the direction of arrow B shown in (a). [Figure 10] FIG. 11 is a diagram showing a state in which sanitary shorts are contained in a package for Comparative Example 2. [Figure 11] FIG. 11 is a diagram showing a state in which sanitary shorts are contained in a packaging body in Example 4. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In each drawing, unless otherwise specified, the same or corresponding configurations may be denoted by the same reference numerals and the description may be omitted. In addition, deviations in the orthogonal, left and right directions are permitted to a degree that does not impair the action and effect of the embodiment. The shape of the corners is not limited to right angles, and may be rounded in a bow shape. The orthogonal may include approximately orthogonal. In this specification, the front-to-back direction of the sanitary shorts 1 is D1, and the width direction of the sanitary shorts 1 that is orthogonal to the front-to-back direction is D2. The front-to-back direction corresponds to the front-to-back direction of the human body wearing the sanitary shorts 1, and the width direction corresponds to the left-to-right direction of the human body wearing the sanitary shorts 1. In this specification, the front side of the sanitary shorts 1 in the front-to-back direction is referred to as the ventral side or front, and the rear side in the front-to-back direction is referred to as the dorsal side or rear. In this specification, the surface of the sanitary shorts 1 that faces the human body is referred to as the skin surface, and the surface of the sanitary shorts 1 opposite to the skin surface is referred to as the non-skin surface.

[0014] Overall composition FIG. 1 is a diagram showing one embodiment of an individually packaged absorbent article of the present invention.

[0015] 1, this embodiment is an individually packaged absorbent article 7 in which sanitary shorts 1, which are an example of an absorbent article, are contained in a package 40. The sanitary shorts 1 are folded to fit the shape of the package 40 and contained in the package 40.

[0016] 《Menstrual shorts 1》 Fig. 2 is an external perspective view of the sanitary shorts 1 shown in Fig. 1. Fig. 3 is a plan view of the sanitary shorts 1 shown in Fig. 2 as seen from the skin side in an unfolded state. Fig. 4 is a cross-sectional view taken along line AA shown in Fig. 3. Fig. 5 is a view showing the sanitary shorts 1 shown in Fig. 2 being worn.

[0017] As shown in FIG. 2, this embodiment is a sanitary shorts 1 having an exterior body 10 and an interior body 20, with the interior body 20 disposed on one surface of the exterior body 10. When unfolded, the sanitary shorts 1 are configured with a front region F, a middle region M, and a rear region R connected in this order in the front-to-rear direction D1. The front region F is a portion that covers the lower abdomen when the sanitary shorts 1 are worn. The rear region R is a portion that covers the lower waist on the back side when the sanitary shorts 1 are worn. The front region F and the rear region R are portions that are an example of a waist portion in the present invention. The middle region M is a portion that is an example of a crotch portion in the present invention, and is disposed between the front region F and the rear region R.

[0018] <Exterior body 10> The exterior body 10 is disposed across the front region F, the middle region M, and the rear region R. In the front region F and the rear region R, the exterior body 10 forms a band-like shape with the width direction D2 as the longitudinal direction. The lengths of the exterior body 10 in the width direction D2 in the front region F and the rear region R may be the same. In the middle region M, the exterior body 10 has a shape that is narrowed toward the center in the width direction D2 so that leg openings 3a are formed when the sanitary shorts 1 are worn.

[0019] The exterior body 10 is constructed by laminating two sheets, an outer layer sheet 11 and an inner layer sheet 12, with the outer layer sheet 11 facing away from the skin and the inner layer sheet 12 facing the inner body 20, and bonding them together with an adhesive such as a hot melt adhesive. The outer layer sheet 11 and the inner layer sheet 12 may be bonded together only partially with an adhesive. The outer layer sheet 11 may be folded back inward at an end on the front region F side in the front-to-rear direction D1 of the sanitary shorts 1.

[0020] The outer layer sheet 11 and the inner layer sheet 12 can be any sheet-like material, but it is preferable to use nonwoven fabric. There is no particular limitation on the raw fiber of the nonwoven fabric. For example, synthetic fibers such as olefins such as polyethylene and polypropylene, polyesters, and polyamides, regenerated fibers such as rayon and cupra, natural fibers such as cotton, and mixed fibers and composite fibers using two or more of these fibers can be used. Furthermore, the nonwoven fabric may be manufactured by any processing method.

[0021] A plurality of rubber threads 13, which are an example of an elastic member, are sandwiched between the outer layer sheet 11 and the inner layer sheet 12 in the front region F and the rear region R. The rubber threads 13 extend between both ends of the outer body 10 in the width direction D2 in a direction in which they are elastic in the width direction D2, and are fixed between the outer layer sheet 11 and the inner layer sheet 12 in a state in which they are spaced apart from each other in the front-rear direction D1. The rubber threads 13 may be provided over the entire area of ​​the front region F and the rear region R, or may be provided only in a portion of a predetermined width from the end 14a of the sanitary shorts 1 in the front region F. Similarly, the rubber threads 13 may be provided only in a portion of a predetermined width from the end 14b of the sanitary shorts 1 in the rear region R. The rubber threads 13 may also be provided partially in places over the entire area of ​​the front region F and the rear region R in the front-rear direction D1. The rubber threads 13 may be fixed to the outer layer sheet 11 and the inner layer sheet 12 by hot melt adhesion, heat sealing, ultrasonic bonding, or the like. The rubber thread 13 does not need to all have the same thickness and elongation rate. For example, the thickness and elongation rate may be different between the end portions 14a, 14b of the sanitary shorts 1 and the middle region M.

[0022] The rubber thread 13 can be made of commonly used materials such as styrene rubber, olefin rubber, urethane rubber, ester rubber, polyurethane, polyethylene, polystyrene, styrene butadiene, silicone, and polyester.

[0023] In this manner, in this embodiment, a plurality of rubber threads 13 are sandwiched between the outer layer sheet 11 and the inner layer sheet 12. This allows the stretchability of the sanitary shorts 1 in the width direction D2 in the front region F and the rear region R to be ensured by the rubber threads 13 sandwiched between the outer layer sheet 11 and the inner layer sheet 12. Note that instead of the rubber threads 13, a stretch film may be used as the stretch member.

[0024] The exterior body 10 has joints 15a, 15b at both ends in the width direction D2 in the front region F. The exterior body 10 also has joints 15c, 15d at both ends in the width direction D2 in the rear region R. The joint 15a in the front region F and the joint 15c in the rear region R are joined by heat or the like, and the joint 15b in the front region F and the joint 15d in the rear region R are joined by heat or the like. As a result, as shown in FIG. 2, a waist opening 2 and leg openings 3a, 3b are respectively formed, and the exterior body 10 constitutes a pair of shorts-type sanitary shorts 1.

[0025] In this embodiment, the exterior body 10 is arranged across the front region F, the middle region M, and the rear region R, but one of the outer layer sheet 11 and the inner layer sheet 12 may be divided into two in the front-rear direction D1. Also, both the outer layer sheet 11 and the inner layer sheet 12 may be divided into two in the front-rear direction D1. In terms of appearance, the exterior body 10 is most preferably arranged across the front region F, the middle region M, and the rear region R. In terms of manufacturing costs, the exterior body 10 is preferably arranged such that both the outer layer sheet 11 and the inner layer sheet 12 are divided into two. In this case, when at least one of the outer layer sheet 11 and the inner layer sheet 12 is arranged across the front region F, the middle region M, and the rear region R, the waist portion in the present invention is composed of the exterior body 10, and the crotch portion in the present invention is composed of the exterior body 10 and the interior body 20. In addition, in a configuration in which both the outer layer sheet 11 and the inner layer sheet 12 are divided into two in the front-to-rear direction D1, the waist portion in the present invention may be composed of the outer body 10, and the crotch portion in the present invention may be composed of the inner body 20.

[0026] <Interior body 20> The inner body 20 is disposed on the skin-facing surface of the shorts-shaped outer body 10, over a portion of the front region F and the rear region R, and over the middle region M. The length W1 of the inner body 20 in the width direction D2 is the same as or shorter than the portion where the length in the width direction D2 is shortest due to the narrowing of the middle region M of the outer body 10. As a result, the inner body 20 has an area that fits along the leg openings 3a, 3b when the outer body 10 is in the shorts-shaped form. The inner body 20 has a gathered sheet 22, a waterproof sheet 27, a second sheet 26, a top sheet 25, and an absorbent body 30.

[0027] The gathered sheet 22 is disposed on the side of the inner body 20 closest to the skin. For example, a nonwoven fabric is used as the gathered sheet 22. Specific examples of the nonwoven fabric that can be used include spunbond nonwoven fabric, meltblown nonwoven fabric, spunlace nonwoven fabric, thermal bond (air-through) nonwoven fabric, needle punched nonwoven fabric, point bond nonwoven fabric, and laminated nonwoven fabric (SSS (spunbond+spunbond+spunbond) nonwoven fabric in which the same or similar nonwoven fabric layers are laminated).

[0028] The length of the gathered sheet 22 in the front-rear direction D1 is the same as the length of the inner body 20, and both ends in the width direction D2 are folded back toward the center in the width direction D2 to form the folded back parts 23a, 23b. The folded back parts 23a, 23b are arranged so that a part of them overlaps the absorbent body 30. The gathered sheet 22 is bonded to the inner layer sheet 12 by adhesive over the entire length in the front-rear direction D1 in the region other than the folded back parts 23a, 23b. Therefore, the folded back parts 23a, 23b can rise up toward the inside of the shorts-shaped outer body 10. The elastic member 24 is attached to the tip of the folded back parts 23a, 23b in a direction that expands and contracts in the front-rear direction D1. As a result, the folded back parts 23a, 23b form the three-dimensional gathered parts 21a, 21b whose tip is contracted to be extensible. The three-dimensional gathered parts 21a, 21b can rise up by using the contraction force of the elastic member 24. In this case, the length W1 of the inner body 20 in the width direction D2 is the same as or shorter than the portion where the length in the width direction D2 is shortest due to the narrowing of the middle region M of the outer body 10. Therefore, the three-dimensional gathers 21a, 21b rise toward the inside of the shorts-type outer body 10 in the regions along both sides of the absorbent body 30 in the width direction D2. The three-dimensional gathers 21a, 21b rise, so that the three-dimensional gathers 21a, 21b can be brought into close contact with the body surface of the human body. As a result, the three-dimensional gathers 21a, 21b have the function of preventing lateral leakage of blood, etc., which moves laterally along the top sheet 25.

[0029] The elastic member 24 may be made of commonly used materials such as styrene rubber, olefin rubber, urethane rubber, ester rubber, polyurethane, polyethylene, polystyrene, styrene butadiene, silicon, and polyester.

[0030] Thus, in this embodiment, the inner body 20 has three-dimensional gathers 21a, 21b that rise up toward the inside of the shorts type in areas along both sides of the absorbent body 30 in the width direction D2. This prevents leakage of blood, etc., and eliminates the need to place elastic thread, etc. in areas along the leg openings 3a, 3b to prevent leakage, thereby avoiding impairment of the aesthetic appearance and the feeling of wearing underwear.

[0031] The waterproof sheet 27 is a water-proof sheet that does not allow liquids such as blood to pass through, and is laminated on the skin-facing surface of the gathered sheet 22 and bonded with an adhesive or the like. As the waterproof sheet 27, for example, a microporous sheet obtained by kneading an inorganic filler into an olefin resin such as polyethylene or polypropylene to form a sheet, and then stretching it in a uniaxial or biaxial direction can be suitably used. Alternatively, the waterproof sheet 27 may be one that uses a nonwoven fabric as a base material to enhance waterproofness. The waterproof sheet 27 preferably extends over a wider area than the absorber 30 at least in the front-rear direction D1 and the width direction D2.

[0032] In this embodiment, the three-dimensional gathered portions 21a, 21b are each composed of one gather sheet 22. However, the three-dimensional gathered portions 21a, 21b may each be composed of one gather sheet. In that case, the two gather sheets are disposed on both sides of the inner body 20 in the width direction D2, and are bonded to the outer body 10 from the upper side of the top sheet 25. In that case, the waterproof sheet 27 is disposed on the opposite side of the top sheet 25 with the absorbent body 30 interposed therebetween.

[0033] In the present embodiment, the three-dimensional gathers 21a, 21b are configured by folding back the two ends of the gather sheet 22 in the width direction D2 toward the center in the width direction D2 to form the folded back portions 23a, 23b. However, the three-dimensional gathers 21a, 21b may be configured by folding back the two ends of the gather sheet 22 in the width direction D2 toward the outside in the width direction D2 to form the folded back portions. In that case, by making the folding width of the folded back portions narrower than the crotch width of the exterior body 10, it is possible to prevent the three-dimensional gathers 21a, 21b from protruding from the exterior body 10.

[0034] The absorbent body 30 is disposed between the waterproof sheet 27 and the top sheet 25 and second sheet 26. The absorbent body 30 is not limited as long as it is a material capable of absorbing and retaining bodily fluids, but preferably contains cotton-like pulp and a water-absorbing polymer. The water-absorbing polymer may be a superabsorbent polymer (SAP), a superabsorbent fiber (SAF), or a combination thereof. Examples of pulp include chemical pulp obtained from wood, cellulose fibers such as dissolving pulp, and artificial cellulose fibers such as rayon and acetate. The pulp may be hardwood pulp obtained from hardwoods, softwood pulp obtained from softwoods, or a mixture of these. The pulp may also be recycled pulp regenerated from used pulp.

[0035] The thickness of the absorbent body 30 may be 1.0 to 8.0 mm. The absorbent body 30 may have a bulging structure in a region corresponding to the bodily fluid discharge outlet (region corresponding to the bodily fluid discharge outlet) and a region behind the region corresponding to the bodily fluid discharge outlet, facing the gluteal crease.

[0036] The top sheet 25 and the second sheet 26 are laminated and arranged on the opposite side of the absorbent body 30 to the waterproof sheet 27, with the second sheet 26 facing the absorbent body 30.

[0037] As the top sheet 25 and the second sheet 26, a nonwoven fabric with or without holes, a porous plastic sheet, or the like is preferably used. As the material fiber constituting the nonwoven fabric, for example, olefins such as polyethylene and polypropylene, synthetic fibers such as polyester and polyamide, regenerated fibers such as rayon and cupra, and blended fibers thereof, and natural fibers such as cotton can be used alone or in combination of two or more kinds. Note that a configuration in which only the top sheet 25 is placed on the absorbent body 30 without placing the second sheet 26 may also be used.

[0038] The sanitary shorts 1 configured as described above are worn by passing the torso 4 through the waist opening 2 and the legs 5a, 5b through the leg openings 3a, 3b, as shown in FIG. 5.

[0039] In a configuration in which both the outer layer sheet 11 and the inner layer sheet 12 of the exterior body 10 are divided into two, the exterior body 10 may form the front region F and the rear region R, and the middle region M may be formed only by the interior body 20. In that case, a part of the interior body 20 extends to a part of the front region F and the rear region R, and the exterior body 10 and the interior body 20 are bonded together. In such a configuration, a covering sheet may be laminated on the non-skin-facing surface of the waterproof sheet 27 of the interior body 20.

[0040] <About the color of sanitary shorts 1> The colors of the sanitary shorts 1 configured as above will be described below.

[0041] Shorts-type absorbent articles are often entirely made of light colors such as white or pink, which makes it easy for blood to be seen through the outside, which is the side that faces away from the skin, after use, and also gives the feeling that one is wearing a diaper, even though the product is shorts-type, resulting in an unattractive appearance.

[0042] Therefore, the colors of the outer body 10 and the inner body 20 of the sanitary shorts 1 were changed, and the change in the appearance of the color before and after the absorbent body 30 absorbed menstrual blood was investigated.

[0043] As described below, the three sanitary shorts of Examples 1 and 2 and Comparative Example 1 were used to measure the CIE1976 L before and after menstrual blood absorption. * a * b * Color space L * Value, a * Value, b * The values ​​for the skin-facing side were measured for the inner body when viewed from the inside of the sanitary shorts, and the values ​​for the non-skin-facing side were measured for the outer body when viewed from the outside of the sanitary shorts.

[0044] (A) Example 1 Thickness of menstrual blood absorption part: 2.9mm Absorbent body water absorption capacity: 920g Skin side: white, L * Value=91.53, a * Value=0.63, b * Value=0.12 Non-skin side: Black, L * Value=19.19, a * Value=0.10, b * Value=1.81 (B) Example 2 Thickness of menstrual blood absorption part: 3.2mm Absorbent body water absorption capacity: 1070g Skin side: white, L * Value=91.53, a * Value=0.63, b * Value=0.12 Non-skin side: dark gray, L * Value=37.70, a * Value=1.01, b * Value=0.32 (C) Comparative example 1 Thickness of menstrual blood absorption part: 2.9mm Absorbent capacity: 960g Skin side: white, L * Value=91.53, a * Value=0.63, b * Value=0.12 Non-skin side: white, L * Value=95.53, a * Value=0.49, b* Value=1.21

[0045] [Table 1] As a result, as shown in the above table, in Comparative Example 1, the L * The value was 95.53 before menstrual blood absorption, but changed significantly to 79.46 after menstrual blood absorption. In other words, the color seen from the non-skin side changed from white before menstrual blood absorption to a dark color. This is because the color seen from the non-skin side before menstrual blood absorption was white, and the menstrual blood was visible from the outside of the outer packaging, causing it to change to a dark color.

[0046] FIG. 6 is a view of Comparative Example 1 as seen from the non-skin facing side after menstrual blood absorption.

[0047] 6, the sanitary shorts 101 in Comparative Example 1 have a white sheet constituting the exterior body 110, so that the color seen from the non-skin side before menstrual blood absorption is white. Therefore, after menstrual blood absorption, menstrual blood is visible from the outside of the exterior body, and the color of the menstrual blood area 6 is significantly different from the color of other areas. As a result, in Comparative Example 1, menstrual blood is visible from the outside of the exterior body.

[0048] On the other hand, in Example 1, L, which indicates the lightness of the color on the non-skin side, * The value was 19.19 before menstrual blood absorption, while it changed little to 17.74 after menstrual blood absorption. In other words, the color seen from the non-skin side did not change much from the black color before menstrual blood absorption. This is because the color seen from the non-skin side before menstrual blood absorption was black, which made it difficult for menstrual blood to be seen through the exterior of the outer packaging, and so there was little color change.

[0049] FIG. 7 is a view of Example 1 as seen from the non-skin facing side after menstrual blood absorption.

[0050] 7, the sanitary shorts 1 in Example 1 have a black sheet constituting the exterior body 10, so that the color seen from the non-skin facing side before menstrual blood absorption is black. Therefore, even after menstrual blood absorption, menstrual blood is less likely to be visible from the outside of the exterior body 10.

[0051] In addition, in Example 2, the L * The value was 37.70 before menstrual blood absorption, while it changed little to 37.25 after menstrual blood absorption. In other words, the color seen from the non-skin side did not change much from the dark gray color before menstrual blood absorption. This is because the color seen from the non-skin side before menstrual blood absorption was dark gray, which made it difficult for menstrual blood to be seen through the exterior of the outer packaging, so there was little color change.

[0052] As a result, in Example 2 as well, by making the sheet constituting the outer casing 10 a dark gray color, the color seen from the non-skin side before menstrual blood absorption is black, and even after menstrual blood absorption, menstrual blood is less likely to be visible from the outside of the outer casing 10.

[0053] In this way, in the sanitary shorts 1 shown in Fig. 2, by making the color of the exterior body 10 black or dark gray, blood is less likely to be visible from the outside after menstrual blood is absorbed. * If the value is 40 or less, blood is less likely to be visible from the outside after menstrual blood absorption. Both the outer layer sheet 11 and the inner layer sheet 12 constituting the exterior body 10 may be made of a dark color such as black or dark gray, or one of the outer layer sheet 11 and the inner layer sheet 12 may be made of a dark color such as black or dark gray. In addition, the L of the exterior body 10 when the sanitary shorts 1 are viewed from the non-skin side is * If the value is 40 or less, the gathered sheet 22 and the waterproof sheet 27 constituting the interior body 20 may be made of a dark color. When one of the outer layer sheet 11 and the inner layer sheet 12 is made of a dark color such as black or dark gray, the other of the outer layer sheet 11 and the inner layer sheet 12 may have a dark color such as black or dark gray. *Even if a sheet having a large value is used, the L of the entire exterior body 10 can be increased by overlapping the outer layer sheet 11 and the inner layer sheet 12. * The value can be reduced.

[0054] Furthermore, by making the color of the exterior body 10 black or dark gray, it is less likely to give the impression of wearing a diaper than if it were white or pink, and it can provide a beautiful appearance and a feeling of wearing underwear. Also, it is no longer necessary to make the exterior body thicker to prevent blood from showing through from the outside after absorbing menstrual blood, which allows for ease of movement and a slim look.

[0055] Furthermore, the L between the area of ​​the exterior body 10 overlapping the interior body 20 and the area of ​​the interior body 20 not overlapping the interior body 20 when viewed from the non-skin facing side of the sanitary shorts 1 * Value, a * value and b * At least L of the values * The difference in the CIE 1976 L value between the darkest and lightest areas when the sanitary shorts 1 are viewed from the non-skin side may be 10 or less. * a * b * Color space L * The difference in the values ​​may be 10 or less. In that case, the sanitary shorts 1 may be arranged so that the non-skin facing side is When viewed from the outside, it becomes difficult to notice that the inner body 20 is placed, and this can prevent the shorts from looking bad.

[0056] In order to prevent blood from being seen through from the outside after menstrual blood absorption, the outer casing 10 of the sanitary shorts 1 when viewed from the non-skin side is * Value or b * The a value may also be taken into consideration. Menstrual blood oxidizes over time and turns a dull color. For this reason, the a value of the exterior body 10 when the sanitary shorts 1 are viewed from the outside may be taken into consideration. * Value or b * If you consider the value, a * value and b * If the value is between −50 and +50, the blood becomes even less visible from the outside after absorption.

[0057] In a configuration in which both the outer layer sheet 11 and the inner layer sheet 12 are divided into two in the front-rear direction D1, the waist portion in the present invention may be composed of the outer body 10, and the crotch portion in the present invention may be composed of the inner body 20. In that case, the L of the sheet of the inner body 20 closest to the skin side may be * By setting the value to 40 or less, as in the case of the above-mentioned exterior body 10, blood is less likely to be visible from the outside after menstrual blood absorption.

[0058] Here, if the entire sanitary shorts 1 are made of a dark color such as black or dark gray, it becomes difficult to check the amount and color of menstrual blood after it has been absorbed.

[0059] In the first embodiment, L * The value was 91.53 before menstrual blood absorption and 28.47 after menstrual blood absorption, showing a large change. * The value was 91.53 before menstrual blood absorption, but changed significantly to 29.57 after menstrual blood absorption. This is because, for example, the top sheet 25 constituting the inner body 20 is white, which increases the color change due to menstrual blood.

[0060] In this way, in the sanitary shorts 1 shown in Fig. 2, by making the color of the inner body 20 a light color such as white, it becomes easier to check the amount and color of menstrual blood after absorption. * If the value is 85 or higher, it becomes easier to check the amount and color of menstrual blood after absorption, and it also gives a sense of cleanliness.

[0061] Here, the three-dimensional gathers 21a, 21b rise toward the inside of the sanitary shorts 1 by utilizing the contractile force of the elastic member 24. Therefore, when the sanitary shorts 1 are worn, the three-dimensional gathers 21a, 21b may bend outward and protrude from the exterior body 10.

[0062] FIG. 8 is a diagram showing a state in which the upright gathered portions 21a and 21b of the sanitary shorts 1 shown in FIG.

[0063] Since the three-dimensional gathers 21a, 21b are configured to rise toward the inside of the sanitary shorts 1, when the sanitary shorts 1 are worn, they may bend outward and protrude from the exterior body 10, as shown in Fig. 8. In that case, as described above, if the exterior body 10 is configured in a dark color such as black or dark gray and the interior body 20 is configured in a light color such as white, the difference in color will make the three-dimensional gathers 21a, 21b stand out, resulting in an unattractive appearance.

[0064] Therefore, only the three-dimensional gather parts 21a, 21b of the inner body 20 may be configured in a dark color such as black or dark gray, similar to the outer body 10. For example, the gather sheet 22 configuring the three-dimensional gather parts 21a, 21b may be configured in a dark color such as black or dark gray. When the outer body 10 is configured in a dark color such as black or dark gray, the three-dimensional gather parts 21a, 21b are preferably configured in a dark color such as black or dark gray, but may be configured in a similar color to the outer body 10. Note that similar colors refer to chromatic colors having the same hue among the 10 basic hues in the Munsell color system, or achromatic colors having a brightness of less than 9 in the Munsell color system.

[0065] As a result, even if the three-dimensional gathered portions 21a, 21b are bent outward and protrude from the exterior body 10, they are not noticeable and the poor appearance is avoided.

[0066] 《Package 40》 9A and 9B are diagrams showing an example of one configuration of the packaging body 40 shown in FIG. 1, where (a) is a plan view and (b) is a view of the packaging body 40 after it has been opened, as viewed from the direction of arrow B shown in (a).

[0067] As shown in Fig. 9, the packaging body 40 in this example is configured by forming a packaging sheet 41 into a cylindrical shape. At both ends in the longitudinal direction of the cylindrical packaging sheet 41, a part of overlapping parts 41a where the overlapping parts 41a overlap each other is formed as a joint 43 and joined by heat, adhesive, or the like, and at both ends in the lateral direction, each of the joints 42a, 42b is also formed as a joint by heat, or the like. In this way, the cylindrical packaging sheet 41 is joined at the joints 42a, 42b, 43 to form a bag shape.

[0068] The packaging sheet 41 may be made of nonwoven fabric, thin film sheet, paper, or any other flexible material capable of generally containing items. In this case, a material having breathability or waterproofness may be used as necessary. Waterproofing may be achieved by applying a waterproofing material to the surface of a material that is not waterproof. The joints 42a, 42b, and 43 may be bonded by applying an adhesive that melts when heated and applying pressure while heating. Alternatively, for example, fine irregularities may be formed on paper, and the irregularities may be engaged to bond the pieces.

[0069] The packaging body 40 is, for example, in an unfolded state, and the folded sanitary shorts 1 are placed on it. The packaging body 40 is then formed into a cylindrical shape to wrap the sanitary shorts 1, and is joined at joints 42a, 42b, and 43 to contain the sanitary shorts 1.

[0070] When removing the sanitary shorts 1 from the packaging body 40, for example, the packaging body 40 is opened by peeling off either the joining portions 42a, 42b, and the sanitary shorts 1 are removed from the opening.

[0071] <Relationship between the color of the sanitary shorts 1 and the color of the packaging 40> The relationship between the color of the sanitary shorts 1 and the color of the packaging body 40 will be described below.

[0072] As described above, when an absorbent article is carried in a package, it is preferable that the absorbent article cannot be seen from the outside. Furthermore, when an absorbent article is disposed of after use, it may be disposed of in a package. In such a case, it is undesirable that menstrual blood can be seen from the outside.

[0073] Therefore, the color of the material of the packaging body 40 was changed relative to the colors of the outer body 10 and inner body 20 of the sanitary shorts 1, and an investigation was conducted to determine whether the sanitary shorts 1 could be seen from the outside when contained in the packaging body 40.

[0074] As described below, in three cases, Examples 3 and 4 and Comparative Example 2, the sanitary shorts 1 and the packaging body 40 were measured for the L of CIE1976. * a * b * Color space L * Value, a * Value, b * The values ​​were measured for each of the sanitary shorts 1. The value for the skin-facing side of the sanitary shorts 1 is the value for the inner body when viewed from the inside of the sanitary shorts 1, and the value for the non-skin-facing side of the sanitary shorts 1 is the value for the outer body when viewed from the outside of the sanitary shorts 1. In addition, the materials are the values ​​for the top sheet 25 and outer layer sheet 11 of the sanitary shorts 1 and the material of the packaging body 40 alone.

[0075] [Table 2] In the sanitary shorts 1, in all of Examples 3 and 4 and Comparative Example 2, as described above, the color of the non-skin side is black so that the blood is less visible from the outside after menstrual blood is absorbed, and the color of the skin side is white so that the amount and color of menstrual blood can be easily confirmed after menstrual blood is absorbed.

[0076] At that time, the L of the inner body 20 as seen from the skin side * The value is 91.53, a * The value is -0.63, and b * The L value of the exterior body 10 as viewed from the non-skin side was 0.12. * The value is 19.19, a *The value is 0.10, and b * The value was 1.81. To achieve this, a 22 gsm white nonwoven fabric was used as the top sheet 25, and a 14 gsm black nonwoven fabric was used as the outer layer sheet 11. The white nonwoven fabric had a L * The value is 95.02, and a * The value is -0.49, and b * The value was 0.82. The black nonwoven fabric had an L * The value is 38.83, and a * value is 0.06, and b * The value was 2.47.

[0077] Using such sanitary shorts 1, the color of the material of the packaging body 40 was changed to investigate whether the sanitary shorts 1 contained in the packaging body 40 could be seen from the outside.

[0078] In Example 3, a package 40 made of a 26 gsm gray film was used. * The value is 32.41, a * The value is 3.43, and b * The value was 6.54.

[0079] In Example 4, the packaging body 40 was made of 14 gsm black nonwoven fabric. * The value is 38.83, a * The value is 0.06, and b * The value was 2.47.

[0080] In Comparative Example 2, a 13 gsm white nonwoven fabric was used as the packaging material. * The value is 95.41, a * The value is -0.25, and b * The value was 1.39.

[0081] FIG. 10 is a diagram showing the sanitary shorts 1 of Comparative Example 2 contained in a package.

[0082] In the individually packaged absorbent article 107 of Comparative Example 2, the outer sheet 11 of the sanitary shorts 1 is made of a black nonwoven fabric, so that the non-skin facing side is black, while the packaging body 140 is made of a white nonwoven fabric. Therefore, as shown in Fig. 10, the sanitary shorts 1 contained in the packaging body 140 can be seen through from the outside.

[0083] FIG. 11 is a diagram showing the sanitary shorts 1 in Example 4 contained in a package.

[0084] In the individually packaged absorbent article 7 of Example 4, the outer layer sheet 11 of the sanitary shorts 1 is made of a black nonwoven fabric, so that the non-skin facing side is black, and the packaging body 40 is also made of a black nonwoven fabric. Therefore, as shown in Fig. 11, the sanitary shorts 1 contained in the packaging body 40 are difficult to see through from the outside.

[0085] In this way, by making the color of the packaging body 40 that contains the sanitary shorts 1, the color of the exterior body 10 of which is black, the sanitary shorts 1 contained in the packaging body 40 are difficult to see through from the outside. * If the value is 50 or less, the color of the exterior body 10 is black, dark gray, etc. * When the sanitary shorts 1 having a value of 40 or less are contained in the packaging body 40, the sanitary shorts 1 are difficult to see through from the outside. * Since the packaging body 40 is made of a gray film having an L value of 32.41, the color of the exterior body 10 is black, dark gray, etc. * When the sanitary shorts 1 having a value of 40 or less are contained in the packaging body 40, the sanitary shorts 1 are difficult to see through from the outside. *The condition of the value can be effective even in a part of the exterior body 10 or the packaging body 40. However, the above-mentioned L * By satisfying the value conditions, blood is less likely to be visible from the outside of the sanitary shorts 1 in any area of ​​the sanitary shorts 1, and the sanitary shorts 1 contained in the packaging body 40 are less likely to be visible from the outside in any area of ​​the packaging body 40.

[0086] In the present invention, the crotch portion is formed of the inner body 20, and the L of the sheet closest to the skin side of the inner body 20 is * Even in the sanitary shorts 1 having a value of 40 or less, the L * If the value is 50 or less, the sanitary shorts 1 are less likely to be visible from the outside.

[0087] Furthermore, if the color of the packaging body 40 when the sanitary shorts 1 are not contained therein is similar to the color of the exterior body 10 when the sanitary shorts 1 are not contained in the packaging body 40, the sanitary shorts 1 can be made even more difficult to see from the outside when contained in the packaging body 40. For example, the packaging body 40 and the exterior body 10 may be chromatic colors having the same hue among the 10 basic hues in the Munsell color system, or achromatic colors having a value of less than 9 in the Munsell color system. Also, the color of the packaging body 40 and the exterior body 10 when viewed from the outside may be different. * value and b * By selecting materials such that the difference in values ​​is 20 or less, the packaging body 40 and the exterior body 10 may be made to have similar colors.

[0088] Although the present invention has been described above based on the embodiments, the present invention is not limited to these embodiments. The above-mentioned embodiments can be variously changed, modified, substituted, added, deleted, and combined within the scope of the claims, and these also belong to the technical scope of the present invention. In addition, the above-mentioned components can be arbitrarily combined. [Explanation of symbols]

[0089] 1 Period shorts 2 Waist opening 3a,3b Leg opening 4 Torso 5a,5b legs 6. Menstrual section 7 Individually packaged absorbent articles 10 Exterior body 11 Outer layer sheet 12 Inner layer sheet 13 Elastic Thread 14a, 14b Ends 15a~15d,42a,42b,43 joint 20 Interior body 21a, 21b Three-dimensional gather section 22 Gathered Sheet 23a, 23b Folded part 24 Elastic member 25 Topsheet 26 Second seat 27 Tarpaulin 30 Absorbent 40 Packaging 41 Packaging Sheet 41a Overlapped part F Front area M middle area R Rear area

Claims

1. An individually packaged absorbent article in which an absorbent article is contained in a package, The absorbent article is configured as a shorts type article including a waist portion and a crotch portion in which an absorbent body is disposed, and the absorbent article has a CIE1976 L size when viewed from the non-skin-facing side opposite to the skin-facing side of the absorbent article that faces the human body. ＊ a ＊ b ＊ Color space L ＊ The value is 40 or less, The package has a CIE 1976 L ＊ a ＊ b ＊ Color space L ＊ An individually packaged absorbent article having a value of 50 or less.

2. The individually packaged absorbent article according to claim 1, wherein the color of the packaging body when the absorbent article is not contained in the packaging body is similar to the color of the absorbent article when viewed from the non-skin side when not contained in the packaging body.

3. The individually packaged absorbent article according to claim 1 , wherein a color of the absorbent article as viewed from the non-skin facing side and a color of the packaging body as viewed from the outside are black or gray.

4. The absorbent article has a CIE1976 L ＊ a ＊ b ＊ Color space L ＊ The value is 40 or less, The package has a CIE 1976 L-type thermal insulation performance when viewed from the outside in all regions. ＊ a ＊ b ＊ Color space L ＊ 2. The individually packaged absorbent article of claim 1, wherein the value is 50 or less.

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