JP2009165862A - Absorbent article - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an absorbent article having a structure which prevents generation of twists or wrinkles during use which is made by layering a plurality of absorbent units and is used by peeling off an upper absorbent unit after use. <P>SOLUTION: In the absorbent article 1, the upper absorbent units 20 are layered and bonded peelably using tentative seals 8 on a skin side surface of a lowermost absorbent unit 10. The flexural rigidity of the lowermost absorbent unit 10 is higher than those of the upper absorbent units 20, and the compression recovery of the lowermost absorbent unit 10 is also higher than those of the upper absorbent units 20. With such a configuration, twists or wrinkles of the lowermost absorbent unit 10 is prevented while the upper absorbent unit 20 is abutted on the excretory organ. In addition, because the volume of the lowermost absorbent unit 10 recovers after the upper absorbent unit 20 is peeled off, the contact feeling of the absorbent article abutted on the excretory organ is improved. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an absorbent article that adheres to underwear and absorbs vaginal excretion, menstrual blood, urine, and the like, and in particular, a plurality of absorption single bodies are stacked and joined, and after use, the upper absorption single body is peeled off. In addition, the present invention relates to an absorbent article capable of using an absorbent single body located thereunder.

  As a sanitary product that absorbs menstrual blood excreted from a woman's vagina, there is a composite sanitary product that is laminated so that a plurality of composite absorbent sheets can be peeled off. In this composite sanitary product, the lower composite absorbent sheet is fixed to the inner surface of the undergarment, and the upper composite absorbent sheet is applied to the excretory part. After absorbing menstrual blood for a predetermined time with the upper composite absorbent sheet, the upper composite absorbent sheet is peeled off and discarded, and the lower composite absorbent sheet located below it is applied to the excretory part, thereby reducing the number of replacements of the absorbent product. I can do it.

  The composite absorbent sheet described in Patent Document 1 below is a liquid in which a lower composite absorbent sheet and an upper composite absorbent sheet are sandwiched between a backing sheet, a surface film, and a backing sheet and a surface film. It is comprised with the absorber sheet | seat. In each composite absorbent sheet, the backing sheet is formed larger than the surface film, and the upper composite absorbent sheet and the lower composite absorbent sheet are joined together by a pressure-sensitive adhesive layer or heat seal. ing.

  The backing sheets are joined along the periphery of the composite absorbent sheet, and a region where the joint does not exist is formed in part, and by inserting a finger into this region, the upper composite absorbent sheet is Easy to peel off from the composite absorbent sheet.

JP 2001-1887084 A

  A conventional composite sanitary product described in Patent Document 1 and the like uses a composite absorbent sheet having the same structure in an overlapping manner. Therefore, when using the upper composite absorbent sheet against the excretory part, the lower composite absorbent sheet may be wrinkled or wrinkled by the movement of the body or the movement of the underwear. When the upper composite absorbent sheet is peeled off, if the lower composite absorbent sheet is wrinkled or wrinkled, the adhesion between the lower composite absorbent sheet and the excretory part is impaired, and the lower composite absorbent sheet is attached. There is a risk that the wearing feeling will worsen and leakage of menstrual blood may occur.

  In addition, when the upper composite absorbent sheet is used while being applied to the excretory part, the state in which the lower composite absorbent sheet is compressed by the body pressure acting on the upper composite absorbent sheet continues for a long time. Therefore, when the upper composite absorbent sheet is soiled and the upper composite absorbent sheet is peeled off, the lower composite absorbent sheet is crushed, and the touch feeling when the lower composite absorbent sheet hits the excretory part of the body is felt. In addition, the liquid absorption capacity of the lower composite absorbent sheet also decreases.

  Since the upper composite absorbent sheet and the backing sheet of the lower composite absorbent sheet are joined to each other, the upper composite absorbent sheet is fixed to the underwear. Is difficult to peel off, and when the upper composite absorbent sheet is peeled off, the lower composite absorbent sheet may be peeled off from the underwear.

  Further, since the joint portion of the backing sheet is located at the peripheral edge portion of the composite sanitary product, if this joint portion hits the skin at the time of wearing, it tends to give the skin a sense of incongruity.

  In addition, because the lower layer composite absorbent sheet and the upper layer composite absorbent sheet are the same, when you look at the dirty state by absorbing menstrual blood etc. when wearing, whether the upper layer composite absorbent sheet was used, It may be misunderstood whether the lower composite absorbent sheet was used, and even though the lower composite absorbent sheet was not used, the upper composite absorbent sheet and the lower composite absorbent sheet together from the underwear It is easy to cause inconveniences such as peeling off and discarding, or peeling off from underwear without preparing a sanitary article for replacement, despite using a lower composite absorbent sheet.

  The present invention solves the above-mentioned conventional problems, and when using the upper absorbent simple substance, it is possible to prevent excessive wrinkles and wrinkles from occurring in the lowermost absorbent simple substance, or to be in a crushed state. An object of the present invention is to provide an absorbent article that can suppress the above-described problem and can use the lowermost absorbent alone in an optimum state.

  Another object of the present invention is to provide an absorbent article that easily peels the upper absorbent simple substance from the lowermost absorbent simple substance.

  Furthermore, an object of the present invention is to provide an absorbent article that can be structured so that the difference between the upper absorbent simple substance and the lowermost absorbent simple substance can be easily judged visually.

  The first aspect of the present invention is an absorbent article in which a plurality of absorbent single bodies each having a liquid absorbing layer are stacked, and a positioning fixing means for fixing to the clothing is provided on the clothing side surface of the bottom absorbent single body located at the bottom, At least one upper absorbent single body is detachably joined to the skin side surface of the lowermost absorbent single body, and the bending rigidity when bending along the vertical direction is higher than that of the uppermost single absorbent body. It is characterized by being higher.

  In the absorbent article of the present invention, even when the body moves and the underwear moves when the upper absorbent simple substance is applied to the excretory part, the lower absorbent simple substance is wrinkled or wrinkled equivalent to the upper absorbent simple substance. It is easy to suppress. Therefore, when the upper absorbent simple substance is peeled off and used, the lowermost absorbent simple substance is easily brought into close contact with the excretory part, and the wearing feeling of the lowermost absorbent simple substance is improved.

  Furthermore, the present invention is provided with a plurality of the upper absorbent simplexes, and the upper absorbent simplexes are detachably stacked, and the bending rigidity of the lower absorbent simplex is higher than the upper absorbent simplex located at the uppermost part. It is expensive.

  If multiple upper absorbent units are provided, the bottom absorbent unit used last will bend and wrinkle by making the bending rigidity of the lowermost absorbent unit higher than that of the uppermost absorbent unit. It becomes easy to suppress.

  In the case where a plurality of upper absorption simplexes are provided, the bending rigidity of the absorption simplex positioned between the uppermost absorption simplex and the lowermost absorption simplex may be lower than that of the uppermost absorption simplex. It is preferable that the upper absorption simple substance of the above has higher bending rigidity than that located on the clothing side than that located on the skin side.

  In the present invention, for example, the basis weight of the material constituting the lowermost absorbent unit is made larger than that of the upper absorbent unit, so that the bending rigidity of the lowermost absorbent unit is increased. By making the thickness larger than that of the upper absorbent single body, the bending rigidity of the lowermost absorbent single body is increased.

  The present invention increases the thickness by heat-treating the nonwoven fabric constituting the lowermost absorbent single body and / or increases the thickness by unevenly shaping the surface layer of the lowermost absorbent single body. It is possible to increase the bending rigidity.

  In the second aspect of the present invention, in the absorbent article in which a plurality of absorbent single bodies each having a liquid absorbing layer are stacked, positioning fixing means for fixing to the clothing is provided on the clothing side surface of the lowermost absorbent single body located at the bottom, At least one upper absorbent single body is detachably joined to the skin side surface of the lowermost absorbent single body, and the compression recovery rate (RC value) of the lowermost single absorbent body is higher than that of the upper absorbent single body. It is what.

  Also in this case, a plurality of the upper absorption simplexes are provided, and the upper absorption simplexes are detachably stacked, and the lower absorption simplex is more compressive (RC) than the upper absorption simplex located at the top. Value) is preferably high, and when a plurality of the upper absorbent single bodies are provided, it is preferable that the compression recovery rate is higher on the clothing side than on the skin side.

  In the present invention, it is preferable that the compression recovery rate (RC value) of at least one material constituting the lowermost absorption simple substance is 40% or more.

  In the above invention, when the upper absorbent simple substance is peeled off, the thickness of the lowermost absorbent simple substance increases, and if the compression recovery rate (RC value) is within the above range, the upper absorbent simple substance is absorbed. The thickness of the entire absorbent article can be reduced as much as possible, and when only the lowermost absorption element is used, the thickness of the lowermost absorption element is restored and the lowermost absorption element hits the excretory part such as the vaginal opening. Can be.

  In the third aspect of the present invention, in the absorbent article in which a plurality of absorbent single bodies each having a liquid absorbing layer are stacked, positioning fixing means for fixing to the clothing is provided on the clothing side surface of the bottom absorbent single body located at the bottom, At least one upper absorbent simple substance is stacked on the skin side surface of the lowermost absorbent simple substance, and both the lowermost absorbent simple substance and the upper absorbent simple substance are fixed by overlapping a plurality of layers. In the region where a plurality of layers are stacked, a temporary fixing seal for temporarily fixing the lowermost absorption unit and the upper absorption unit is formed, and the fixing strength between the layers constituting the lowermost absorption unit and the upper absorption unit The bonding strength between the absorbent single bodies by the temporary seal is weaker than the fixing strength between the respective layers constituting the layer.

  In the present invention, each absorbent single body is formed by stacking a plurality of layers, and a temporary fixing seal is formed in a region where the plurality of layers are stacked. For this reason, when the upper absorbent single body, which is an aggregate of a plurality of layers, is peeled off from the lowermost absorbent single body, the upper absorbent single body has a predetermined thickness, so that it is easy to peel from the lowermost absorbent single body. Moreover, since the lowermost absorption simple substance is temporarily fixed in the region where a plurality of layers are overlapped, the lowermost absorption simplex is unlikely to be bent or wrinkled when the upper absorption simplex is peeled off. .

  In the present invention, it is preferable that the temporary fixing seal is formed at a position spaced inward from the peripheral edge of the absorbent body. Since the temporary fixing seal is not present at the edge, it is easy to prevent the temporary fixing seal from giving a sense of discomfort to the skin of the body.

  In the present invention, it is preferable that the temporary fixing seal is formed so as to partially have a defect portion.

  If the temporary fixing seal is formed to have a defective portion in part, the upper absorbent single body can be reliably peeled from the lowermost absorbent single body.

  In the present invention, it is preferable that the lowermost absorbent simple substance and the upper absorbent simple substance each have four corners, and the planar pattern of the temporary fixing seal is curved at each corner.

  If the temporary fixing seal formed in the corner has a curved pattern, even if a peeling force in the vertical direction acts on the upper absorbent single body while wearing, the temporary fixing seal in the corner Is difficult to peel off. However, when the finger is put in the defect part and the upper absorbent unit is peeled upward, the peeling force propagates along the curved pattern, so that the temporary fixing at the corner can be peeled without receiving a large resistance force. become.

Moreover, it is preferable that the upper absorption simple substance is partially compressed in the defect portion.
In the compressed portion of the upper absorbent simple substance, it becomes easy to insert a finger between the lowermost absorbent simple substance and the upper absorbent simple substance, and the upper absorbent simple substance can be securely picked and peeled off at the defect portion.

  In the present invention, at least one of the skin side surface of the lowermost absorbent single body and the clothing side surface of the upper absorbent single body contains non-fusible fibers, and the skin side surface and the clothing side surface face each other. In the state, it can be configured that the temporary seal is formed by being pressurized in the thickness direction and heated.

  If non-fusible fibers are located on the opposite side of the bottom absorbent unit and the top absorbent unit, and a temporary seal is formed on this part, the bonding force of the temporary seal does not become excessive, and the bottom absorbent unit And it becomes easy to peel off the upper absorption simple substance.

  Further, according to the present invention, the emboss pattern appearing on the skin side surface is different between the bottom absorption simple substance and the upper absorption simple substance, and / or the skin absorption surface color difference between the bottom absorption simple substance and the upper absorption simple substance. It is preferable to do.

  By configuring in this way, even when the absorption simple substance is contaminated with excrement, it is possible to immediately recognize which layer of the absorption simple substance is being used, and accidentally discard the unused bottom absorption simplex. Inconveniences such as forgetting to bring a replacement absorbent article to the toilet are less likely to occur.

  Further, in the present invention, at least one functional agent of antibacterial, deodorant, and fragrance can be contained in at least the lowest absorption simple substance.

When a functional agent such as antibacterial agent, deodorant, or fragrance is included in the lowermost absorption simple substance or the upper absorption simple substance, it becomes easy to suppress the propagation of germs and the generation of odor during use. In particular, by including the functional agent in the lowermost absorption unit that has been worn for the longest time, it is possible to effectively use the function of suppressing the growth and odor of germs.
Examples of the functional agent include tea leaf extract.

  In an absorbent article in which a plurality of absorption simple substances are laminated, it is easy to suppress the occurrence of wrinkles and wrinkles in the lowermost absorption simple substance when the upper absorption simple substance is peeled off. Therefore, the wearing feeling when the lowermost absorption simple substance is worn on the excretion part is improved.

  In addition, the present invention restores the bulk of the lowermost absorbent single body when the upper absorbent single body is peeled off, makes it possible to improve the touch feeling that the lowermost absorbent single body hits the excretory part, and enhances the liquid absorption capacity of the lowermost absorbent single body. Can demonstrate.

  Further, according to the present invention, the upper absorbent simple substance can be easily peeled off from the lowermost absorbent simple substance, and it becomes difficult to give wrinkles or the like to the lowermost absorbent simple substance when the upper absorbent simple substance is peeled off.

The top view which looked at the absorptive article of a 1st embodiment of the present invention from the skin side surface, (A) is a cross-sectional view taken along the line II-II of the absorbent article shown in FIG. 1, (B) is a separated cross-sectional view separated for each absorption alone, The isolation | separation sectional drawing which isolate | separated the absorbent article of the 2nd Embodiment of this invention for every absorption simple substance, An enlarged plan view showing details of the pattern of the pressurizing part of the temporary fixing seal, A plan view for explaining the positional relationship between the round seal and the temporary fixing seal, The absorbent article of the 3rd Embodiment of this invention is shown, (A) is the top view which looked at the upper absorption simple substance from the skin side surface, (B) is only the lowest absorption simple substance from the skin side surface. A plan view, (A) is a plan view showing an absorbent article according to a fourth embodiment of the present invention, (B) is a plan view showing a state in which the upper absorbent simple substance is removed, The fragmentary sectional view cut | disconnected by the VIII-VIII line | wire of FIG. 7 (A), Partial plan view of the temporary fixing seal, The top view which shows the absorbent article of the 5th Embodiment of this invention, Explanatory diagram of compression recovery rate,

  FIG. 1 is a plan view of the absorbent article 1 according to the first embodiment of the present invention as viewed from the skin side surface, and FIG. 2A is a cross-sectional view of the absorbent article 1 shown in FIG. A cross-sectional view and FIG. 2 (B) are separated cross-sectional views showing the absorbent article 1 separated for each absorption simple substance.

  The absorbent article 1 to be described below is used as a panty liner that is fixed to the inner surface of the crotch portion of the undergarment, and is used for the purpose of absorbing a cage or a small amount of menstrual blood. However, the absorbent article of the present invention can be used as a sanitary product that absorbs a relatively large amount of menstrual blood, or as a urine absorption pad used for the purpose of absorbing urine.

  The absorbent article 1 shown in FIG. 1 and FIG. 2 (A) has a left-right symmetrical shape with respect to the longitudinal center line Oy. Further, it is symmetrical in the front-rear direction with respect to the horizontal center line Ox. FIG. 2A is a cross-sectional view of the absorbent article 1 cut along a lateral center line Ox. The absorbent article 1 has a vertically long shape in which the vertical dimension, which is the dimension of the part through which the vertical center line Oy passes, is larger than the horizontal dimension, which is the dimension of the part through which the horizontal center line Ox passes. It is worn in the crotch part of the body so as to be directed in the front-rear direction.

  As shown in FIG. 1, the absorbent article 1 has a front edge portion 2 with a curved shape toward the front, a rear edge portion 3 with a curved shape toward the rear, and a lateral dimension toward the longitudinal center line. The right side edge 4 and the left side edge 5 are formed in a concave curve shape so as to decrease. In the absorbent article 1, the side facing the skin when worn is the skin side surface 6, and the side facing the clothing such as underwear is the clothing side surface 7. Moreover, as for each sheet | seat which comprises the absorbent article 1, the side which faces the skin side surface 6 is a skin side, and the side which faces the clothing side surface 7 is a clothing side.

  As shown in FIGS. 2 (A) and 2 (B), the absorbent article 1 has a lowermost absorbent simple substance 10 and an upper absorbent simple substance 20 stacked on the skin side of the lowermost absorbent simple substance 10. . The lowermost absorption simple substance 10 is configured by superposing a top sheet 11, an intermediate sheet 12, and an article back sheet 13. The upper absorbent single body 20 is configured by superposing a top sheet 21, an intermediate sheet 22, and a back sheet 23.

  The planar shape of the lowermost absorbent simple substance 10 is the same as the overall planar shape of the absorbent article 1 shown in FIG. 1, and the top sheet 11, the intermediate sheet 12, and the article back sheet 13 constituting the lowermost absorbent simple substance 10. The peripheral edge matches the shape of the front edge 2 and the rear edge 3 and the right edge 4 and the left edge 5 of the absorbent article 1. The planar shape of the upper absorbent single body 20 is the same as the overall planar shape of the absorbent article 1 shown in FIG. 1, and the peripheral portions of the top sheet 21, the intermediate sheet 22, and the back sheet 23 constituting the upper absorbent single body 20 are The shape of the front edge 2 and the rear edge 3 and the right edge 4 and the left edge 5 of the absorbent article 1 are the same.

In the lowermost absorbent simple substance 10, the top sheet 11 and the intermediate sheet 12 are bonded with a rubber-based hot melt adhesive coated in a spiral pattern or the like in an amount (for example, 10 g / m ² ) that does not impede liquid permeation. Furthermore, the top sheet 11 and the intermediate sheet 12 are integrally fixed by a round seal 14. In the round seal 14, the top sheet 11 and the intermediate sheet 12 are heated and pressurized together, and the heat-fusible fibers contained in at least one of the top sheet 11 and the intermediate sheet 12 are melted to form the top sheet. 11 and the intermediate sheet 12 are firmly fixed.

  Similarly, in the upper absorbent single body 20, the top sheet 21 and the intermediate sheet 22 are bonded with a hot-melt adhesive applied in an amount that does not impede liquid permeation, and the intermediate sheet 22 and the back sheet 23 are hot-melted. Bonded with mold adhesive. Further, the top sheet 21, the intermediate sheet 22, and the back sheet 23 are integrally fixed by a round seal 24. In the round seal 24, the top sheet 21, the intermediate sheet 22, and the back sheet 23 are heated and pressurized together, and the heat-fusible fiber and the back sheet 23 contained in at least one of the top sheet 21 and the intermediate sheet 22. The top sheet 21, the intermediate sheet 22, and the back sheet 23 are firmly fixed.

  In FIG. 1, the round seal 24 formed on the upper absorbent single body 20 is indicated by a solid line. The round seal 24 is formed over the entire length of the outer periphery of the upper absorbent single body 20, and the round seal 24 is formed in the upper absorbent single body 20 at the front edge portion 2 and the rear edge portion 3 and the right edge portion 4 and the left side. It is formed at a position spaced inward from the edge 5. Similarly, also in the lowermost absorbent single body 10, the round seal 14 is formed over the entire circumference, and this round seal 14 is formed at a position overlapping the round seal 24 of the upper absorbent single body 20 and with the same width as the round seal 24. ing.

  Furthermore, the upper absorbent simple substance 20 is overlapped on the skin side of the top sheet 11 of the lowermost absorbent simple substance 10, and the pre-integrated top sheet 11 and intermediate sheet 12 and the pre-integrated upper absorbent simple substance 20 are temporarily It is temporarily fixed by a stop seal 8 so as to be separable. The temporary fixing seal 8 is formed by stacking the upper absorbent single body 20 on the top sheet 11 and heating and pressurizing all layers except the article back sheet 13. In FIG. 1, the temporary fixing seal 8 is indicated by a broken line. However, as shown to FIG. 2 (A), the area | region in which the temporary fixing seal | sticker 8 is formed in the skin side surface 6 of the absorbent article 1 is dented.

  As shown in FIG. 1, the temporary fixing seal 8 is formed along the right edge portion 4 and the left edge portion 5 of the absorbent article 1, but at the front edge portion 2 and the rear edge portion 3, the center in the longitudinal direction. The temporary fixing seal 8 is not formed in the range of the left and right dimension W1 centered on the line Oy, and the range of W1 is a defective portion of the temporary fixing seal 8.

  In FIG. 2B, the width dimension of the round seal 14 formed on the lowermost absorbent single body 10 and the width dimension of the round seal 24 formed on the upper absorbent single body 20 are indicated by Wa, and the width of the temporary fixing seal 8 is shown. The dimension is indicated by Wb. FIG. 5 is a partial plan view showing the round seals 14 and 24 and the temporary fixing seal 8 in an enlarged manner. Also in FIG. 5, the width dimension of the round seals 14 and 24 is indicated by Wa. The width dimension is indicated by Wb.

  The formation area of the round seals 14 and 24 and the formation area of the temporary fixing seal 8 overlap, and the width dimension Wb of the temporary fixing seal 8 is larger than the width dimension Wa of the round seals 14 and 24. For example, the width dimension Wa of the round seals 14 and 24 is about 2 mm, and the width dimension Wb of the temporary fixing seal 8 is about 3 mm.

  The bonding strength between the lowermost absorbent single body 10 and the upper absorbent single body 20 in the temporary fixing seal 8 is weaker than the bonding strength between the top sheet 11 and the intermediate sheet 12 by the round seal 14 of the lowermost absorbent single body 10 and is temporarily fixed. The bonding strength by the seal 8 is set to be weaker than the bonding strength between the layers of the top sheet 21, the intermediate sheet 22, and the back sheet 23 by the round seal 24 of the upper absorbent unit 20.

  FIG. 4 shows details of the pressurizing pattern of the temporary fixing seal 8. In FIG. 5 and the like, the seal pattern is simplified. As shown in FIG. 4, the temporary fixing seal 8 is formed such that a square pressure part 8 a is inclined at an angle of 45 degrees with respect to the longitudinal direction of the absorbent article 1, and the pressure part 8 a is 45 degrees. They are lined up at intervals from each other in rows at angles. In the temporary fixing seal 8, the top sheet 11, the intermediate sheet 12, and the upper absorbent single body 20 are pressurized under heating at the portion of the pressurizing portion 8 a, and the pressurizing portion 8 a is deformed into a concave shape on the skin side surface. And the part of this pressurization part 8a is functioning as a junction part of the surface sheet 11 and the upper absorption simple substance 20. FIG.

  As shown in FIG. 5, the round seal 14 that joins the top sheet 11 and the intermediate sheet 12 of the lowermost absorbent simple substance 10, and the pressure part of the round seal 24 that fixes each layer in the upper absorbent simple substance 20. Although the pattern of 14a, 24a is not illustrated in detail, it is the same as the pattern of the pressurization part 8a shown in FIG. The size and arrangement interval of the pressurizing portions 8a of the temporary fixing seal 8 and the size and arrangement intervals of the pressurizing portions 14a and 24a of the round seals 14 and 24 may be the same or different from each other. For example, the pressurizing unit 8a and the pressurizing units 14a and 24a have one side of about 0.2 to 1 mm, and the interval between the edges of the adjacent pressurizing units is about 0.2 to 1 mm.

  The round seal 14 sandwiches the top sheet 11 and the back sheet 12 between a roll on which a projection corresponding to the pattern of the pressurizing unit 14a is formed and a roll having a smooth peripheral surface, and pressurizes the sheet under heating. The round seal 24 is formed by sandwiching the upper absorbent single body 20 between a roll formed with a projection corresponding to the pattern of the pressurizing portion 24a and a roll having a smooth peripheral surface. It is formed by pressing. Similarly, the temporary fixing seal 8 includes a top sheet 11, a back sheet 12, and an upper absorbent single unit 20 between a roll formed with a protrusion corresponding to the pattern of the pressurizing unit 8 a and a roll having a smooth peripheral surface. It is formed by sandwiching and pressing under heating.

  The material sandwiched between the rolls when forming the round seal 14 is only two layers of the top sheet 11 and the intermediate sheet 12, and when forming the round seal 24, the material sandwiched between the rolls constitutes the upper absorbent unit 2 Only 3 layers of material. On the other hand, a total of five layers are sandwiched between the rolls when the temporary fixing seal 8 is formed. Further, as described above, the width dimension Wa of the round seals 14 and 24 is shorter than the width dimension Wb of the temporary fixing seal 8. Therefore, when the size and interval of the pressurizing portions 14a and 24a of the round seals 14 and 24 and the pressurizing portion 8a of the temporary fixing seal 8 are the same, and further, the clamping force between the rolls and the heating temperature during processing are the same. The compression pressure applied to the pressurizing part 8a of the temporary fixing seal 8 becomes weaker than the compression pressure applied to the pressurizing parts 14a, 24a of the round seals 14, 24.

  Therefore, even if the round seals 14 and 24 and the temporary fixing seal 8 are processed under the same conditions, the bonding strength between the top sheet 11 and the intermediate sheet 12 by the round seal 14 and the bonding between the layers of the upper absorbent single body 20 by the round seal 24 The force can be set sufficiently larger than the bonding force between the top sheet 11 and the back sheet 23 by the temporary fixing seal 8.

  In addition, at least one of the top sheet 11 located on the skin side of the lowermost absorbent simple substance 10 and the back sheet 23 located on the clothing side of the upper absorbent simple substance 20 has a heat-sealable material, and at least one of the non-adhesive simple substance 10 has a non-heated material. It is preferable that a fusible material is included.

  The top sheet 11 and the back sheet 23 are bonded to each other while the heat-sealable material exhibits an adhesive force when the temporary seal 8 is formed. As a result, it is possible to prevent the top sheet 11 and the back sheet 23 from being excessively fusion-bonded by the temporary fixing seal 8 and to easily peel the upper absorbent unit 20 from the lowermost absorbent unit 10. For example, the back sheet 23 is formed of a heat-fusible resin such as a polyethylene resin film, and the top sheet 11 is made of only non-fusible fibers such as natural fibers such as cotton and pulp, or regenerated cellulose fibers such as rayon. The surface sheet 11 is formed by mixing the non-fusible fiber and the heat-fusible fiber. In this case, it is preferable that 50 mass% or more of the said non-fusible fiber is contained in the surface sheet 11, and the remainder is comprised with a fusible fiber.

  As shown in FIG. 2A, the temporary fixing seal 8 is formed at a position spaced a distance Wc inside the right edge 4 and the left edge 5. That is, neither the round seals 14 and 24 nor the temporary fixing seal 8 is formed in the range of the distance Wc. The distance Wc is preferably 1 mm or more, and more preferably 2 mm or more.

  As shown in FIG. 5, the temporary fixing seal 8 is preferably formed so as to protrude beyond the round seals 14 and 24 toward the edge (for example, the right edge 4) of the absorbent article 1. In this case, there is no seal portion in the range of the width dimension Wc from the edge (for example, the right side edge 4) of the absorbent article 1 to the inside, and there is a temporary fixing in the range of the inner width dimension Wd. Only the seal 8 exists, and the round seals 14 and 24 and the temporary fixing seal 8 overlap inside. Therefore, the range of the width dimension Wc from the edge is soft, and the rigidity is gradually increased toward the inside, so that it is difficult to give the skin a strange feeling when the edge touches the skin of the body. .

  The width dimension W1 of the defect portion of the temporary fixing seal 8 shown in FIG. 1 is 5 to 30 mm. In this defect portion, the gap between the top sheet 11 of the lowermost absorbent simple substance 10 and the back sheet 23 of the upper absorbent simple substance 20 is obtained. In addition, you can insert your finger.

  After the top sheet 11 and the intermediate sheet 12 constituting the lowermost absorbent simple substance 10 and the upper absorbent simple substance 20 are temporarily fixed by the temporary fixing seal 8, the article on the clothing side surface of the intermediate sheet 12 of the lowermost absorbent simple substance 10 The back sheet 13 is bonded and fixed with a hot-melt adhesive. The bonding strength between the intermediate sheet 12 and the article back sheet 13 by the hot melt adhesive is set to be stronger than the bonding strength between the lowermost absorbent single body 10 and the upper absorbent single body 20 by the temporary fixing seal 8.

  A pressure-sensitive adhesive layer is provided on the clothing side surface of the article back sheet 13 as a positioning and fixing means, and a release sheet for protecting the pressure-sensitive adhesive layer is provided before the absorbent article 1 is used. It has been. The fixing strength when the article back sheet 13 and the undergarment are bonded and fixed by the pressure sensitive adhesive is set to be stronger than the bonding strength between the lowermost absorbent single body 10 and the upper absorbent single body 20 by the temporary fixing seal 8. .

  In addition, the fixing strength when the article back sheet 13 and the undergarment are bonded and fixed is the bonding strength between the top sheet 11 and the intermediate sheet 12 and the bonding strength between the intermediate sheet 12 and the article back sheet 13 in the lowermost absorbent single body 10. It is set weaker than.

The pressure-sensitive adhesive provided on the clothing side surface of the article back sheet 13 as a positioning and fixing means is a hot melt type, and is a styrene-isoprene-styrene copolymer, styrene-butadiene-styrene copolymer, styrene-ethylene-butadiene. -Any one of a styrene copolymer and a styrene-butadiene copolymer may be used, or two or more may be used in combination. The coating pattern is arbitrary such as a stripe shape or a dot shape, but the coating amount is in the range of 10 to 100 g / m ² . The adhesion strength to the underwear is preferably 1 N / cm ² or more.

  The adhesion strength is a value measured after pressurizing for 2 seconds after bonding the article back sheet 13 and the measurement part of the measurement device using “PICMA Tack Tester IMC-1567” manufactured by Imoto Seisakusho Co., Ltd. as a measurement device. It is.

  At least one of the top sheet 11 and the intermediate sheet 12 of the lowermost absorbent single body 10 is hydrophilic and has a function of absorbing and holding liquid. Similarly, at least one of the top sheet 21 and the intermediate sheet 22 of the upper absorbent single body 20 is hydrophilic and has a function of absorbing and holding liquid.

  For example, the intermediate sheet 12 and the intermediate sheet 22 exhibit a liquid absorption function, and are non-woven fabrics formed of hydrophilic natural fibers such as cotton, wool, and pulp, such as spunlace non-woven fabrics. Or it is the spunlace nonwoven fabric containing hydrophilic synthetic fiber and hydrophilic regenerated cellulose fibers, such as rayon fiber. Or the through-air nonwoven fabric formed with the synthetic resin fiber by which the hydrophilic process was carried out can be used. Further, as the intermediate sheet 12 and the intermediate sheet 22, a hydrophilic airlaid nonwoven fabric obtained by laminating pulp fibers by an air raid method and joining the pulp fibers with a binder, or recycled cellulose fibers and synthetic resin fibers in addition to the pulp fibers. An airlaid nonwoven fabric can be used. Further, the intermediate sheet 12 and the intermediate sheet 22 can contain a superabsorbent resin (SAP).

  The surface sheets 11 and 21 preferably have a function of allowing the liquid to permeate the intermediate sheets 12 and 22, and can use a spunlace nonwoven fabric or a through-air nonwoven fabric, which is a hydrophilic nonwoven fabric, and a large number of liquid-permeable materials. It can form with the resin film which has a hole.

  Further, the top sheet 11 constituting the lowermost absorbent simple substance 10 and the surface sheet 21 constituting the upper absorbent simple substance 20 are deleted, and the lowermost absorbent simple substance 10 is formed only by the intermediate sheet 12 and the article back sheet 13 to absorb the upper part. It is also possible to configure the single unit 20 with only the intermediate sheet 22 and the back sheet 23.

  The article back sheet 13 and the back sheet 23 are liquid blocking properties and are formed of a polyethylene resin film, a polypropylene resin film, a cellophane resin film, or the like. The article back sheet 13 and the back sheet 23 are formed of a gas-permeable and liquid-blocking resin film in which a large number of fine fillers are mixed and stretched to form fine ventilation holes that allow air to pass through. Is preferred.

Further, as the article back sheet 13 or the back sheet 23, an SMS composite nonwoven fabric in which three layers of nonwoven fabric of spunbond nonwoven fabric / meltblown nonwoven fabric / spunbond nonwoven fabric formed of polypropylene resin fibers are joined by heat sealing can be used. Alternatively, a composite nonwoven fabric in which an SMS composite nonwoven fabric / melt blown nonwoven fabric / SMS composite nonwoven fabric is laminated and heat-sealed can also be used. These nonwoven fabrics preferably have a basis weight in the range of 15 to 40 g / m ² . Further, the article back sheet 13 or the back sheet 23 can be formed of a laminate of the nonwoven fabric and the resin film.

  In particular, since the upper absorbent unit 20 has the lowermost absorbent unit 10 stacked below it, the air permeability between the upper part and the outer part of the underwear is likely to be hindered, and it is worn for a long time in a high temperature and high humidity environment such as summer. If you are doing it, you may get worried. Therefore, it is preferable to use the nonwoven fabric having good air permeability for the back sheet 23 used for the upper absorbent single body 20. Moreover, since the said nonwoven fabric is soft compared with a resin film, even if the back surface sheet 23 which is a nonwoven fabric is located in the middle of the absorbent article 1, a hard touch does not produce the whole absorbent article 1 easily.

  The characteristics of the lowermost absorbent simple substance 10 composed of the top sheet 11, the intermediate sheet 12, and the article back surface sheet 13, and the upper absorbent simple substance 20 composed of the top sheet 21, the intermediate sheet 22, and the back sheet 23 are different from each other. Yes. First, the bending rigidity in the vertical direction when measured by making the lowermost absorbent simple substance 10 and the upper absorbent simple substance 20 independent from each other is higher in the lowermost absorbent simple substance 10 than in the upper absorbent simple substance 20. Secondly, in addition to the difference in rigidity or regardless of the difference in rigidity, the compression recovery rate at the time of pressurization in the thickness direction when the lowermost absorption unit 10 and the upper absorption unit 20 are measured independently of each other is The lowermost absorbing simple substance 10 is higher than the upper absorbing simple substance 20.

  The bending rigidity can be measured using a Gurley type flexibility tester No. 311 manufactured by Yasuda Seiki Seisakusho. In the region where the round seals 14 and 24 are not formed, respectively, the lowermost absorbent simple substance 10 and the upper absorbent simple substance 20 have a width dimension of 25 mm in the direction along the horizontal center line Ox and the length in the direction along the vertical center line Oy. A sample cut so that the length is 38 mm is prepared and measured using the test machine so that the vertical direction is the bending direction. The Gurley bending stiffness value of the lowermost absorbent single body 10 is preferably higher than the Gurley bending rigidity value of the upper absorbent single body 20 by 0.05 mN or more per 25 mm width.

  In order to make the bending rigidity of the lowermost absorbent simple substance 10 higher than that of the upper absorbent simple substance 20, the basis weight of the material constituting the lowermost absorbent simple substance 10 should be made higher than that of the upper absorbent simple substance 20 Can be realized. Or, even if the basis weight of the material constituting the lowermost absorbent simple substance 10 and the upper absorbent simple substance 20 is the same, by making the thickness of the lowermost absorbent simple substance 10 larger than the thickness of the upper absorbent simple substance 20, in the vertical direction The bending resistance when bent can be increased, and the bending rigidity of the lowermost absorbent single body 20 can be made higher than that of the upper absorbent single body 20.

  The means for providing the difference in thickness is that when at least one of the top sheet 11 and the intermediate sheet 12 of the lowermost absorbent simple substance 10 is a non-woven cloth containing synthetic resin fibers, the non-woven cloth constituting the lowermost absorbent simple substance 10 is a heat roller. It can be realized by bringing it into contact with heat treatment or applying hot air to heat treatment to restore the bulk. Alternatively, as shown in FIG. 2 (B), at least one of the top sheet 11 and the intermediate sheet 12 (the top sheet 11 in FIG. 2 (A)) of the lowermost absorbent simple substance 10 is wavy when viewed in a cross section in the lateral direction. The thickness of the lowermost absorbent single body 10 can also be made larger than the thickness of the upper absorbent single body 20 by applying corrugation processing so that the top and bottom of the wave extend parallel to the vertical direction. The bending rigidity of the lowermost absorbent simple substance 10 can be increased.

  The corrugating process can be realized by providing a pair of gear rolls formed by repeatedly forming irregularities along the peripheral surface and sandwiching a nonwoven fabric between the two gear rolls.

  In the absorbent article 1 of the first embodiment shown in FIGS. 1 and 2A and 2B, the intermediate sheet 12 of the lowermost absorbent simple substance 10 and the intermediate sheet 22 of the upper absorbent simple substance 20 have the same basis weight. In this case, only the intermediate sheet 12 of the lowermost absorbent single body 10 is heat-treated to restore the bulk. As a result, the bending rigidity of the lowermost absorbent single body 10 is made higher than that of the upper absorbent single body 20. Further, the top sheet 11 of the lowermost absorbent single body 10 and the top sheet 21 of the upper absorbent single body 20 are nonwoven fabrics having the same basis weight and the same fiber configuration, and both are corrugated.

  Further, as a means for making the bending rigidity of the lowermost absorbent single body 10 higher than the bending rigidity of the upper absorbent single body 20, the material backsheet 13 of the lowermost absorbent single body 10 is made of a material having higher rigidity than the backsheet 23 of the upper absorbent single body 20. May be formed. For example, the back sheet 23 is formed of a resin film or a nonwoven fabric, and the article back sheet 13 is formed of a laminate material of the nonwoven fabric and the resin film.

  As described above, the nonwoven fabric constituting the lowermost absorbent simple substance 10 is heat-treated to restore the bulk, and / or the nonwoven fabric constituting the lowermost absorbent simple substance 10 is subjected to corrugation, thereby reducing the thickness of the lowermost absorbent simple substance 10. It is possible to make the compression recovery rate when pressurized in the direction higher than the compression recovery rate of the upper absorbent single body 20.

  The compression recovery rate can be measured with an automated compression tester “KES FB3-AUTO-A” manufactured by Kato Tech Co., Ltd. An outline of a diagram obtained by the measurement is shown in FIG.

In the automated compression tester, the lowermost absorbent simple substance 10 made up of the top sheet 11, the intermediate sheet 12 and the article back face sheet 13, or the upper absorbent simple substance 20 made up of the top sheet 21, the intermediate sheet 22 and the back sheet 23 individually. Install. An initial pressure of P0 = 49 Pa (0.5 g / cm ² ) is applied to the sample in the vertical direction with a circular pressure plate having an area of 2 cm ² , and the measured thickness at this time is defined as an initial thickness dimension T 0. Starting from the initial pressure P0, the compression pressure is increased linearly at a compression rate of 50 seconds / 1 mm up to Pm = 4900 Pa (50 g / cm ² ), and the measurement sample is pressurized when the compression pressure Pm is applied. The thickness is Tm.

The compression work WC is WC = ∫P · dT (P is pressure, T is thickness) and T0 → Tm with respect to the curve of FIG. 11 (i) obtained when pressurizing as described above. (N · m / m ² ) obtained by definite integration. The compression recovery work amount WC ′ is a value (N · m / m ² ) obtained by performing the same definite integration as described above on the curve (ii) when the compression pressure is returned from Pm to P0. The compression recovery rate (RC value) is obtained by WC ′ / WC × 100 (%).

  The compression recovery rate (RC value) of the lowermost absorbent simple substance 20 is preferably 40% or more, and more preferably 50% or more. The upper limit is 100%.

  In addition, in order to make the compression recovery rate of the lowermost absorbent simple substance 20 higher than that of the upper absorbent simple substance 10, a plurality of bulky materials having cushioning properties like through-air nonwoven fabric are stacked on the lowermost absorbent simple substance 20. Therefore, it is not always necessary to perform the heat treatment as described above.

  When the absorbent article 1 is used, the release sheet provided on the clothing side surface of the article back sheet 13 is peeled off, and the article back sheet 13 is bonded and fixed to the crotch portion of the underwear via the pressure sensitive adhesive layer. Then, the upper absorption unit 20 is applied to the excretory part such as the vaginal opening. When the upper absorbent simplex 20 absorbs excretion fluid such as sag and menstrual blood, and the upper absorbent simplex 20 becomes dirty, the lowermost absorbent simplex 10 at the defect portion of the temporary fixing seal 8 having the width W1 shown in FIG. Put the finger between the top sheet 11 and the back sheet 23 of the upper absorbent unit 20, lift the upper absorbent unit 20, remove the joint at the temporary fixing seal 8, and remove the upper absorbent unit 20 from the lowermost absorbent unit 10. Separate. Thereafter, the top sheet 11 of the lowermost absorbent simple substance 10 is used by being applied to the excretory part.

  As described above, by making the bending rigidity of the lowermost absorbent simple substance 10 higher than the bending rigidity of the upper absorbent simple substance 20, when using the upper absorbent simple substance 20 against the excretory part, Even if the upper absorbent single body 20 is wrinkled or wrinkled due to the movement of the underwear, the deformation of the lowermost absorbent single body 10 can be reduced compared to the deformation of the upper absorbent single body 20. Therefore, when the excretion is absorbed and the soiled upper absorbent simple substance 20 is peeled off, the lowermost absorbent simple substance 10 is easily kept flat.

  Further, the bulk of the lowermost absorbent 10 is recovered by heat treatment, and in addition to or instead of this, the corrugation is applied to the top sheet 11 and the like, and the compression recovery rate is 40% or more, more preferably 50% or more. It has become. Since the compression recovery rate of the lowermost absorbent simple substance 10 is higher than the compression recovery rate of the upper absorbent simple substance 20, when the lowermost absorbent simple substance 10 and the upper absorbent simple substance 20 are overlapped, the lowermost absorbent simple substance 10 becomes the upper absorbent simple substance. The overall thickness dimension of the absorbent article 1 is not increased so much by being pushed by 20. Moreover, when the dirty upper absorbent unit 20 is peeled off, the thickness of the lowermost absorbent unit 10 is restored, and when only the lowermost absorbent unit 10 is used, the contact feeling with the excretory part is soft and good. Become. Moreover, the lowermost absorption simple substance 10 whose thickness has been recovered can exhibit a sufficient liquid absorption capability.

  Further, the temporary fixing seal 8 includes a region where the top sheet 11 and the intermediate sheet 12 are overlapped in the lowermost absorbent simple substance 10, and a top sheet 21, the intermediate sheet 22, and the back sheet 23 are overlapped in the upper absorbent simple substance 20. Is formed in the region. Therefore, when the upper absorbent simplex 20 is peeled off, the top sheet 21, the intermediate sheet 22, and the backsheet 23 are lifted together and separated from the lowermost absorbent simplex 10, and the upper absorbent simplex 20 is easily peeled off. Further, in the lowermost absorbent simple substance 10, the force to peel off the upper absorbent simple substance 20 at the part of the temporary fixing seal 8 can be received by the three-layer laminate of the top sheet 11, the intermediate sheet 12, and the article back sheet 13, Even if a peeling force is applied to the lowermost unit 10, wrinkles or the like hardly occur in the lowermost unit 10.

  FIG. 3 shows an absorbent article 101 according to the second embodiment of the present invention, and is a separated cross-sectional view showing a state where each absorbent single body is separated.

  In this absorbent article 101, the lowermost absorbent simple substance 110 is provided on the clothing side surface 7, the upper absorbent simple substance 120 is superimposed on the lowermost absorbent simple substance 110, and the uppermost absorbent simple substance 130 is provided on the skin side surface 6. It has been.

  In the lowermost absorption unit 110, the top sheet 111 and the intermediate sheet 112 are overlapped and bonded with a hot-melt adhesive in an amount that does not impede the permeation of the liquid, and the top sheet 111 and the intermediate sheet 112 are round sealed 114. It is fixed in. The upper absorbent single body 120 is not provided with a top sheet, an intermediate sheet 122 and a back sheet 123 are laminated, bonded with a hot melt adhesive, and fixed to each other with a round seal 124. In the uppermost absorbent unit 130, the intermediate sheet 132 and the back sheet 133 are bonded with a hot melt adhesive and fixed with a round seal 134.

  In this embodiment, since the upper absorbent single body 120 has a two-layer structure of the intermediate sheet 122 and the back sheet 123, the upper absorption can be achieved by firmly fixing these two layers with a hot-melt adhesive. The round seal 124 of the single unit 120 is not always necessary. This also applies to the uppermost absorbent unit 130, and the round seal 134 of the uppermost absorbent unit 130 is not necessarily required.

  The top sheet 111 and the intermediate sheet 112 of the lowermost absorbent simple substance 110, the upper absorbent simple substance 120, and the uppermost absorbent simple substance 130 are stacked, and the temporary absorbent seal 8 having the same pattern as shown in FIG. 110, upper absorption unit 120, and uppermost absorption unit 130 are temporarily fixed so as to be separable. After this temporary fixing, the article back surface sheet 113 is adhered to the intermediate sheet 112 of the lowermost absorbent simple substance 110 with a hot melt adhesive.

  The pattern shapes of the pressurizing portions of the round seals 114, 124, 134 and the temporary fixing seal 8 are the same as those in the first embodiment. Further, preferred ranges such as the width dimension Wa of the round seals 114, 124, and 134, the width dimension Wb of the temporary fixing seal 8, and the distance Wc from the edge to the temporary fixing seal 8 and the round seal are also shown in the first embodiment. Is the same.

  The absorbent article 101 of this embodiment is used with the uppermost absorbent simple substance 130 applied to the excretory part. When the uppermost absorbent simple substance 130 becomes dirty, the uppermost absorbent simple substance 130 is peeled off, and the upper absorbent simple substance 120 is removed. Can be used for Further, when the upper absorbent simple substance 120 becomes dirty, the upper absorbent simple substance 120 can be peeled off, and the lowermost absorbent simple substance 110 can be applied to the excretory part.

  The bending rigidity when each absorbing element is bent in the vertical direction is larger in the lowermost absorbing element 110 than in the uppermost absorbing element 130. Further, the bending rigidity of the upper absorbent simple substance 120 is higher than that of the uppermost absorbent simple substance 130 and lower than that of the lowermost absorbent simple substance 110. The compression recovery rate when pressurized in the thickness direction is higher in the lowermost absorption unit 110 than in the uppermost absorption unit 130, and the compression recovery rate of the upper absorption unit 120 is higher than that in the uppermost absorption unit 130. Lower than the lower absorption unit 110.

  In the embodiment of FIG. 3, the intermediate sheet 132 of the uppermost absorbent simple substance 130 and the intermediate sheet 122 of the upper absorbent simple substance 120 are non-woven fabrics having the same basis weight and the same fiber configuration. However, corrugation processing is performed on the intermediate sheet 122 of the upper absorbent simple substance 120, the thickness of the upper absorbent simple substance 120 is increased more than the thickness of the uppermost absorbent simple substance 130, and both the bending rigidity and the compression recovery rate of the upper absorbent simple substance 120 are It is higher than the uppermost absorption unit 130. Further, in the lowermost absorbent simple substance 110, the intermediate sheet 112 is heat treated to recover the bulk, and the top sheet 111 is corrugated, and the lowermost absorbent simple substance 110 has the largest thickness and the largest basis weight, and the lowermost absorbent The simple substance 110 is set to have higher bending rigidity and compression recovery rate than the upper absorbent simple substance 120 and the uppermost absorbent simple substance 130.

  Moreover, in the absorbent article 1 of 1st Embodiment, it is preferable that the lowermost absorption simple substance 10 and the upper absorption simple substance 20 can be distinguished visually. Also in the absorbent article 101 of the second embodiment, it is preferable that at least the lowermost absorbent simple substance 110 is visually distinguishable from the upper absorbent simple substance 120 and the uppermost absorbent simple substance 130, and further, the lowermost part. It is preferable that the absorption simple substance 110, the upper absorption simple substance 120, and the uppermost absorption simple substance 130 can be distinguished visually.

  In order to make it possible to distinguish the absorption simple substance visually, it can be realized by making the color different for each absorption simple substance. For example, one of the absorption simple substances is formed of white fibers to make the skin side surface white, and the other absorption simple substance is formed of colored fibers so that the skin side surface exhibits a color other than white. For example, in the case where catechins are included as a functional agent exhibiting a deodorizing function in the intermediate sheets 12 and 112 and / or the surface sheets 11 and 111 constituting the lowermost absorbent simple substance 10 or 110, the catechins are included. It is preferable to use it together with a green pigment so that it can be imaged. Thereby, the skin side surfaces of the lowermost absorption simple substance 10, 110 come to exhibit a light green color. At this time, if the upper absorbent simple substance or the uppermost absorbent simple substance is made of white fiber, it can be easily identified visually whether or not the lowest absorbent simple substance 10, 110 is being used. In addition, when catechins are included, the lowermost absorbent simple substance 10, 110 that has been worn for the longest time can exhibit a bactericidal effect and a deodorizing effect, and it is possible to prevent the generation of bad odors even if worn for a long time. In addition, it is possible to include catechins in the upper absorbent simple substance 20, 120 and the uppermost absorbent simple substance 130 as well.

  6 (A) and 6 (B) are plan views showing a third embodiment in which the absorption simple substance can be visually distinguished, and FIG. 6 (A) is a plan view showing the upper absorption simple substance 220 from the skin side surface. FIG. 6B is a plan view showing only the lowermost absorption unit 210 from the skin side surface.

  The upper absorbent single body 220 shown in FIG. 6A has a round seal 224 formed around it, and the topsheet 221 is corrugated. By this corrugation, the surface sheet 221 has a wave-shaped cross section, and the top and bottom of the wave extend in parallel and linearly in the vertical direction. 6B, the top sheet 211 is subjected to corrugation similar to the above, and the top sheet 211 has a leaf pattern embossed portion 215 formed thereon. Thus, by making the embossed pattern appearing on the skin side surface different between the lowermost absorbent simplex 210 and the upper absorbent simplex 220, the lowermost absorbent simplex 210 and the upper absorbent simplex 220 can be easily distinguished visually. Become.

  Also, if the top sheet of the bottom absorbent unit is corrugated and the top sheet of the top absorbent unit is not corrugated, the bottom part can be visually determined to determine whether or not corrugation exists. The absorption simple substance and the upper absorption simple substance can be easily distinguished visually. Further, as described above, by applying corrugation to the top sheet of the lowermost absorbent single body, the bending rigidity and compression recovery rate of the lowermost absorbent single body can be made higher than that of the upper absorbent single body.

  As described above, the absorption simple substance can be visually distinguished by making the material of the top sheet different between the lowermost absorption simple substance and the upper absorption simple substance or making the structure of the top sheet different.

  By making it possible to distinguish the bottom absorption unit and the top absorption unit when viewed from the skin side surface, it is possible to identify the absorption unit currently applied to the excretory part, which is incorrect when using the top absorption unit Inadvertently disposing of the entire absorbent article, or when using the bottom absorbent body alone, accidentally removing the absorbent article from the undergarment without preparing a substitute absorbent article. Can be prevented.

  FIG. 7A is a plan view of the absorbent article 301 according to the fourth embodiment of the present invention as seen from the skin-side surface 6, and FIG. 7B shows the upper absorbent single body 320 from the absorbent article 301. It is the top view which shows the state which peeled, ie, the lowermost absorption simple substance 310 from the skin side. FIG. 8 is a partial cross-sectional view taken along VIII-VIII in FIG. FIG. 9 is a partially enlarged plan view showing the shape of the temporary fixing seal 8.

  As shown in the partial cross-sectional view of FIG. 8, this absorbent article 301 is formed of two layers, a lowermost absorbent simple substance 310 and an upper absorbent simple substance 320.

  The lowermost absorbent simple substance 310 is formed of a top sheet 311, a first intermediate sheet 312, a second intermediate sheet 313, and an article back sheet 314. The top sheet 311 has a liquid permeation function, and the first intermediate sheet 312 and the second intermediate sheet 313 have a liquid absorption holding function. Alternatively, one of the intermediate sheets 312 and 313 may have a liquid absorbing function, and the other may be bulky and low in density and exhibit a cushion function. The article back sheet 314 is air permeable and liquid blocking.

A round seal is not formed on the lowermost absorbent simple substance 310, and each layer is bonded with a hot-melt adhesive. A rubber system is used between the top sheet 311 and the second intermediate sheet 312 and between the first intermediate sheet 312 and the second intermediate sheet 313 so that the permeation of the liquid can be prevented and the layers can be firmly bonded. The hot melt adhesive is coated in a spiral pattern with a coating amount of about 10 g / m ² . The second intermediate sheet 313 and the article back sheet 314 are further firmly bonded and fixed with a hot-melt adhesive.

  The absorbent single body 320 includes a top sheet 321, an intermediate sheet 322, and a back sheet 323. The top sheet 321 is liquid permeable, the intermediate sheet 322 has a liquid absorption holding function, and the back sheet 323 is air permeable and liquid blocking.

  No round seal is formed on the upper absorbent single body 320, and the top sheet 321 and the intermediate sheet 322 are firmly fixed with a coating amount of hot-melt adhesive that does not prevent liquid permeation. The back sheet 323 is also firmly bonded and fixed with a hot melt adhesive.

  As shown in FIG. 7A, the lowermost absorbent single body 310 and the upper absorbent single body 320 are temporarily fixed by a temporary fixing seal 8 so as to be peelable. The pattern of the temporary fixing seal 8 is the same as that of the first embodiment shown in FIG. 1. The pattern of the pressurizing portion 8a of the temporary fixing seal 8 and the preferable range of the width dimension Wb of the temporary fixing seal 8 are This is the same as the first embodiment. The bonding strength between the lowermost absorbent single body 310 and the upper absorbent single body 320 by the temporary fixing seal 8 is set to be weaker than the adhesive strength between the layers in the lowermost absorbent single body 310 and the adhesive strength between the respective layers of the upper absorbent single body 320. .

  As shown in FIG. 7A, the temporary fixing seal 8 extends along the right edge 4 and the left edge 5 of the absorbent article 301 over the entire length of these edges, and each end of the temporary fixing seal 8. The part 8 b is located inside the front edge part 2 and the rear edge part 3. In addition, on the inner side of the front edge portion 2 and the inner side of the rear edge portion 3, a gap between the end portion 8b and the end portion 8b is a missing portion where the temporary fixing seal 8 is interrupted. The width of the missing portion is W1, and its preferred range is the same as that in the first embodiment.

  As shown in FIG. 7A, at the front edge portion 2 and the rear edge portion 3, the upper absorbent single body 320 is partially included in the range (a) including the missing portion of the temporary fixing seal 8 and a part of the temporary fixing seal 8. A compression unit 325 is formed that is pressurized. As shown in FIG. 8, in the compression unit 325, the top sheet 321, the intermediate sheet 322, and the back sheet 323 are compressed together, and the upper absorbent single body 320 is partially formed thin. The compression part 325 is formed in the range of L in the longitudinal direction from the front edge part 2 and the rear edge part 3. The L is not particularly defined, but is about 5 mm to 30 mm, for example. Further, the total (2 × L) of the lengths L of the respective compression portions 325 formed at the front edge portion 2 and the rear edge portion 3 is ¼ or less of the longitudinal length dimension of the absorbent article 301. Preferably, it is 1/5 or less. That is, the compression part 425 does not extend to the central region of the absorbent article 301.

  The compression section 325 is formed by adhering the top sheet 321, the intermediate sheet 322, and the back sheet 323 constituting the upper absorbent unit 320 with a hot-melt adhesive, and using the temporary fixing seal 8 to absorb the lowermost absorbent unit 310 and the upper absorbent unit 325. It is formed in a process before temporarily fixing the unit 320. The compression unit 325 is a roll having a smooth surface or a roll having a fine emboss pattern formed on the surface, and is formed by pressing the upper absorbent single body 320 at room temperature or under heating.

  When the compression part 325 is formed in the missing part, even if the temporary fixing seal 8 is not present, the top sheet 321, the intermediate sheet 322, and the back sheet 323 constituting the upper absorbent single body 320 are difficult to separate, It is possible to prevent peeling between the layers of the upper absorbent single body 320 in the defective portion where the temporary fixing seal 8 is not formed.

  Further, as shown in FIG. 8, a gap is easily formed between the lower surface of the compression portion 325 of the upper absorbent single body 320 and the top sheet 311 of the lowermost absorbent single body 310 at the missing portion of the temporary fixing seal 8. . Therefore, when the upper absorbent single body 320 becomes dirty, the upper absorbent single body 320 can be easily grasped and peeled off at the missing portion of the temporary fixing seal 8.

  As shown in FIG. 7A, as a result of the end 8b of the temporary fixing seal 8 being located inside the front edge 2 and the rear edge 3, each corner 9 of the absorbent article 301, that is, the right side. The boundary between the edge 4 and the front edge 2, the boundary between the right edge 4 and the rear edge 3, the boundary between the left edge 5 and the front edge 2, and the left edge 5 and the rear edge 3, a part of the temporary fixing seal 8 is present at each of the boundary portions with 3. Due to the presence of part of the temporary fixing seal 8 at each corner 9, the upper absorbent unit 320 is inadvertently peeled off from the lowermost absorbent unit 310 at the corner 9 when the absorbent article 301 is worn. It becomes easy to prevent.

  Inside each corner 9 of the absorbent article 301, a part of the temporary fixing seal 8 is a curved portion 8 c whose convex side is directed outward so as to follow the shape of the corner 9. Since the temporary fixing seal 8 has the curved shape portion 8c and the end portion 8b exists inside the front edge portion 2 and the rear edge portion 3, as shown in FIG. In the rear edge portion 3, the temporary fixing seal 8 exists in the range of the width dimension W2 in the lateral direction. The W2 is preferably at least twice the width dimension Wb of the temporary fixing seal 8, and more preferably at least three times.

  When the absorbent article 301 is worn while being fixed to the inner surface of the undergarment, the longitudinal peeling shown in FIG. Even if the force F1 is applied, since the temporary fixing seal 8 exists in the range of the width dimension W2 at the front edge portion 2 and the rear edge portion 3, the peeling force F1 is received within the range of the width dimension W2. be able to. Therefore, it is easy to prevent the upper absorbent unit 320 from being inadvertently separated from the lowermost absorbent unit 310 by the peeling force F1.

  On the other hand, when the upper absorbent single body 320 is soiled with a container or menstrual blood, when the upper absorbent body 320 is grasped and peeled off at the defect portion of the temporary fixing seal 8 at the front edge portion 2 or the rear edge portion 3, At the front edge portion 2 or the rear edge portion 3, a force that lifts the front side of the paper of FIG. As a result, the end portion 8b of the temporary fixing seal 8 can be given a force F2 in a direction along the pattern shape of the temporary fixing seal 8, as shown in FIG. Therefore, the peeling force propagates along the curved shape portion 8c from the end portion 8b to the temporary fixing seal 8, and the upper absorption unit 320 is absorbed in the lowermost portion without giving excessive resistance to the finger. It can be peeled off from the single body 310.

  The compressing portion 325 can be applied to the other embodiments described above, and the advantage of the curved shape portion 8c formed in the temporary fixing seal 8 is the same as that of the other embodiments. It is.

  As shown in FIG. 8, the top sheet 311 of the lowermost absorbent single 310 and the top sheet 321 of the upper absorbent single 320 are both corrugated and shaped into a wavy pattern. In this absorbent article 301, since the lowermost absorbent single body 310 has a four-layer structure and the upper absorbent single body 320 has a three-layer structure, the vertical bending rigidity and compression recovery rate of the lowermost absorbent single body 310 are determined by the upper absorption. It can be higher than the single unit 320.

  Further, as shown in FIG. 7B, the lowermost absorbent simple substance 310 is formed by interspersing the leaf sheet embossed portions 315 on the top sheet 311, and the lowermost absorbent simple substance 310 and the upper absorbent simple substance 310 are formed. 320 is easy to distinguish visually.

  FIG. 10: is the top view which looked at the absorbent article 401 of the 5th Embodiment of this invention from the skin side surface 6. FIG.

  In this absorbent article 401, at least one upper absorbent simple substance is stacked on the lowermost absorbent simple substance, as in the above embodiments. A plurality of layers are layered on each of the lowermost absorbent and the upper absorbent, and each layer is bonded with a hot melt adhesive for each absorbent, and a round seal is formed on the absorbent if necessary. ing.

  The lowermost absorption unit and the upper absorption unit are temporarily fixed by a temporary fixing seal 8. In the absorbent article 401 shown in FIG. 10, the temporary fixing seal 8 is formed over the entire length inside the front edge portion 2 and the rear edge portion 3, and inside the right edge portion 4 and inside the left edge portion 5, A defect portion in which the temporary fixing seal portion 8 is interrupted is formed.

  In each of the above-described embodiments, it is preferable that at least the lowest absorption unit 10, 110, 210, 310 includes a deodorizing function agent such as the catechins described above, an antibacterial agent, a fragrance, or the like. However, the functional agent may be included in each of the upper absorbent simple substance 20, 120, 220, 320 and the uppermost absorbent simple substance 130.

  As the functional agent, one or more of phenols extracted from plants represented by catechins, activated carbon, copper ions, silver ions, and the like can be used. As described above, when catechins are included, it is preferable to use a pigment so that the skin-side surface of the absorption simple substance exhibits a green color. When activated carbon is used, the skin-side surface is colored black. It is preferable to use pigments that exhibit. By combining the absorption simple substance colored by containing these functional agents and pigments with the white absorption simple substance, it becomes easy to distinguish the lowermost absorption simple substance and the upper absorption simple substance visually as described above. Further, when the embossed portions 215 and 315 having the leaf pattern shown in FIG. 7B are formed on the skin side surface of the absorption simple substance to which catechins are added, the sterilization and disinfection are visually performed. It is possible to generate a visual image that is an absorption simple substance having an odor effect, and to give a wearer a clean feeling.

  Catechin is a tea leaf extract extracted from tea leaves with water or hot water, in the form of fine powder, fixed in a fine porous material, or encapsulated in microcapsules, intermediate sheet or surface sheet Between the fibers.

  The catechins contained in the tea leaf extract are epicatechin, epicatechin garade, epicarocatechin, epigallocatechin garade, catechin galade, gallocatechin garade. When using a tea leaf extract, it is preferable that epigallocatechin garade is contained in the tea leaf extract in an amount of 10% by mass or more, and more preferably 30% by mass or more.

  Further, as the pigment, a phthalocyanine pigment such as copper phthalocyanine green can be used, or a copper chlorophyll pigment which is a food natural pigment can also be used. As the hue of the pigment, it is possible to exert a concealing effect on the caged (colorless to light brown) and urine (light yellow) in body fluids, and the image effect of catechins that are tea extracts and natural materials. In order to enhance, considering the green color of tea leaves as a hue, a hue between 10YR and 10G of the Munsell hue system is desirable. Preferably it is 10Y-10G.

  The tea leaf extract is included in, for example, an intermediate sheet, and is included in a range of 0.1 to 1.0% by mass with respect to the mass of the intermediate sheet. The pigment is included in a mass range of 10 to 30 when the mass of the tea leaf extract is 100. In order to use the tea leaf extract in a fine powder state, the fine powder preferably has a size of 5 μm or less, more preferably 2 μm or less.

(1) Example 1
As shown in FIGS. 2A and 2B, an absorbent article 1 having a two-layer structure of a lowermost absorbent simple substance 10 and an upper absorbent simple substance 20 was manufactured.

Both the surface sheet 11 of the lowermost absorbent simple substance 10 and the surface sheet 21 of the upper absorbent simple substance 20 were formed of a spunlace nonwoven fabric with 60% by mass of rayon fibers and 40% by mass of polyethylene terephthalate fibers. The basis weight was 35 g / m ² . What gave corrugated processing was used as the surface sheet 11 and the surface sheet 21. FIG.

The intermediate sheet 12 of the lowermost absorbent simple substance 10 and the intermediate sheet 22 of the upper absorbent simple substance 20 were both formed of a through-air nonwoven fabric with 50% by mass of polyethylene fibers and 50% by mass of polypropylene fibers. Both the polyethylene fiber and the polypropylene fiber had a fineness of 2.2 dtex and a fiber length of 40 mm, and the basis weight was 25 g / m ² . However, the through-air nonwoven fabric constituting the intermediate sheet 12 of the lowermost absorbent single body 10 was heat-treated by being brought into contact with two heat rolls at 120 ° C. in an S shape to restore the bulk.

  The thickness of the heat-treated intermediate sheet 12 was 1.4 mm, and the thickness of the intermediate sheet 22 of the upper absorbent single body 20 that was not heat-treated was 0.5 mm. The compression recovery rate (RC value) when the heat-treated intermediate sheet 12 was measured alone was 53.83%.

Both the article back sheet 13 of the lowermost absorbent simple substance 10 and the back sheet 23 of the upper absorbent simple substance 20 were both formed of a breathable polyethylene film having a basis weight of 35 g / m ² .

  As shown in FIG. 1 and FIGS. 2A and 2B, a round seal 14 is formed on the lowermost absorbent simple substance 10, a round seal 24 is formed on the upper absorbent simple substance 20, and the lowermost absorbent simple substance 10 and the upper absorbent simple substance are formed. A temporary fixing seal 8 for temporarily fixing 20 was formed.

  The lowermost absorbent simple substance 10 and the upper absorbent simple substance 20 are formed of the same material. However, the intermediate sheet 12 of the lowermost absorbent simple substance 10 is heat treated to recover the bulk, so that the thickness of the lowermost absorbent simple substance 10 is absorbed into the upper part. The bending rigidity and compression recovery rate of the lowermost absorbent single body 10 can be made larger than those of the upper absorbent single body 20.

(2) Example 2
An absorbent article having a two-layer structure was produced in the same manner as in Example 1.

  As the top sheet 11, the intermediate sheet 12, and the article back sheet 13 of the lowermost absorbent simple substance 10, the same ones as in Example 1 were used.

In the upper absorbent single body 20, the top sheet 21 was formed of a through-air nonwoven fabric with 50% by mass of polyethylene fibers and 50% by mass of polypropylene fibers. Both the polyethylene fiber and the polypropylene fiber had a fineness of 2.2 dtex and a fiber length of 40 mm, and the basis weight was 25 g / m ² . Moreover, the thing which did not perform the heat processing for bulk recovery, and did not perform corrugation was used.

As the intermediate sheet 12 of the upper absorbent single body 20, an air laid nonwoven fabric in which pulp is laminated by an air laid method and fibers are bonded with a binder is used. The basis weight was 35 g / m ² . The back sheet 23 of the upper absorbent single body 20 was an SMS composite nonwoven fabric having a basis weight of 20 g / m ² .

  As shown in FIG. 1 and FIGS. 2A and 2B, a round seal 14 is formed on the lowermost absorbent simple substance 10, a round seal 24 is formed on the upper absorbent simple substance 20, and the lowermost absorbent simple substance 10 and the upper absorbent simple substance are formed. A temporary fixing seal 8 for temporarily fixing 20 was formed.

  By making the total basis weight (basis weight) of the materials constituting the lowermost absorbent simple substance 10 larger than that of the upper absorbent simple substance 20, the bending rigidity of the lowermost absorbent simple substance 10 could be set higher than that of the upper absorbent simple substance 20 . Moreover, the lowermost absorption simple substance 10 uses the intermediate sheet 12 whose volume was recovered by heat treatment, and the compression recovery rate of the lowermost absorption simple substance 10 was higher than that of the upper absorption simple substance 20.

(3) Example 3
As Example 3, an absorbent article 101 having a three-layer structure shown in FIG.

As the top sheet 111 and the intermediate sheet 112 of the lowermost absorbent simple substance 110, the same one as the top sheet 11 and the intermediate sheet 12 of Example 1 was used. The article backsheet 113 having a basis weight was used and the SMS composite nonwoven fabric of 20 g / ^{m 2,} a laminate with breathable polyethylene film having a basis weight of 20 g / ^{m 2.}

The intermediate sheet 122 of the upper absorbent single body 120 is a spunlace nonwoven fabric of 60% by mass of cotton fibers and 40% by mass of polyethylene terephthalate fibers, which is corrugated. As the back sheet 123, a breathable polyethylene film having a basis weight of 35 g / m ² was used.

The intermediate sheet 132 of the uppermost absorbent unit 130 is a spunlace nonwoven fabric formed only of cotton fibers, and has a basis weight of 35 g / m ² and is not corrugated. As the back sheet 133, a breathable polyethylene film having a basis weight of 23 g / m ² was used.

  As shown in FIG. 3, the round seal 114 is formed on the lowermost absorbent single body 110, the round seal 124 is formed on the upper absorbent single body 120, and the round seal 134 is formed on the uppermost absorbent single body 130. A temporary fixing seal 8 for temporarily fixing the lowermost absorbent simple substance 110, the upper absorbent simple substance 120, and the uppermost absorbent simple substance 130 was formed.

  By setting the basis weight and basis weight in the order of the uppermost absorbent simple substance 130, the upper absorbent simple substance 120, and the lowermost absorbent simple substance 110 in this order, the bending rigidity could be set to increase in the above order. Further, the intermediate sheet 122 of the upper absorbent single body 120 is corrugated to increase its thickness, which increases the bending rigidity and the compression recovery rate. The lowermost absorbent simple substance 110 has its intermediate sheet 112 recovered in volume by heat treatment, and the top sheet 111 has been corrugated to have a large thickness, thereby increasing the bending rigidity and increasing the compression recovery rate. ing.

(4) Example 4
As shown in FIG. 7 thru | or FIG. 9, the absorbent article which does not form a round seal in each absorption single-piece | unit was manufactured.

Similarly to the case shown in FIG. 8, the lowermost absorption simple substance 310 has a four-layer structure. The top sheet 311 is a spunlace nonwoven fabric having 60% by mass of rayon fiber and 40 of polyethylene terephthalate fiber, and the basis weight is 35 g / m ² . The surface sheet 311 used was corrugated. The first intermediate sheet 312 is a spun lace nonwoven fabric of 10% by mass of polypropylene fibers hydrophilically treated with 90% by mass of rayon fibers, and has a basis weight of 30 g / m ² . The second intermediate sheet 313 is a through-air nonwoven fabric with 50% by mass of hydrophilic-treated polyethylene fibers and 50% by mass of hydrophilic-treated polypropylene fibers, and has a basis weight of 30 g / m ² . The article back sheet 314 was formed of a breathable polyethylene film having a basis weight of 35 g / m ² .

  The upper absorbent single body 320 has a three-layer structure of a top sheet 321, an intermediate sheet 322, and a back sheet 323, and the top sheet 321 is the same as the top sheet 311 of the bottommost absorbent single body 310, and the intermediate sheet 322 and the back sheet 323 are The same as the first intermediate sheet 312 and the article back sheet 314 of the lowermost absorbent simple substance 310. That is, the upper absorbent single body 320 has the same configuration as the second intermediate sheet 313 of the lowermost absorbent single body 310 is removed. In the lowermost absorbent simple substance 310, the topsheet 311 and the first intermediate sheet 312 were overlapped to form a leaf pattern embossed portion 315 shown in FIG. 7B.

  Then, the lowermost absorbent simple substance 310 and the upper absorbent simple substance 320 were overlapped to form the temporary fixing seal 8.

  In Example 4, since the lowermost absorbent single body 310 has a four-layer structure and the upper absorbent single body 320 has a three-layer structure, the bending rigidity of the lowermost absorbent single body 310 can be set higher than that of the upper absorbent single body 320. Also, the compression recovery rate could be set higher for the lowermost absorbent simple substance 310 than for the upper absorbent simple substance 320.

  The first intermediate sheet 312 of the lowermost absorbent simple substance 310 and the intermediate sheet 322 of the upper absorbent simple substance 320 contain a tea leaf extract and a green pigment, and the lowermost absorbent simplest 310 sees the surface sheet 311 and sees the green color. The upper absorbent single body 320 can see through the top sheet 321 and see through green.

  The component ratio of the catechins contained in the tea leaf extract was 31.5% by mass of epigallocatechin galade, 17.2% by mass of epigallocatechin, 17.2% by mass of gallocatechin, and 5.9% of epicatechin. %, Epicatechin garade was 5.0 mass%, catechin galade was 2.8 mass%, and gallocatechin garade was 1.9 mass%. The tea leaf powder containing these catechins was used as a fine powder having a particle size of less than 2 μm. The tea leaf powder was included in an amount of 0.38% by mass with respect to the mass of each of the first intermediate sheet 312 and the intermediate sheet 322.

  As the pigment, copper phthalocyanine green exhibiting green color was used. The pigment was included so that the mass was 15 when the mass of the tea leaf extract contained in each of the first intermediate sheet 312 and the intermediate sheet 322 was 100.

The first intermediate sheet 312 and the intermediate sheet 322 are produced by mixing rayon fibers and polypropylene fibers so as to have a mass ratio of 90:10 to form a spunlace nonwoven fabric having a basis weight of 30 g / m ^2. Put the spunlace nonwoven fabric in a drum type dyeing machine, add nonionic-anionic surfactant as a dispersant and stir, add tea leaf extract and copper phthalocyanine green to fix the tea leaf extract on the fiber, Colored green.

(5) Example 5
The bottom absorbent single body has a three-layer structure, the top absorbent single body 2 has a two-layer structure, and an absorbent article is produced in which the skin side surface of the top absorbent single body is white and the skin side surface of the bottom single absorbent body is green. .

  The lowermost absorbent simple substance was formed of the same surface sheet as the first intermediate sheet 312 of Example 4, that is, a spunlace nonwoven fabric containing a tea leaf extract and a green pigment. The thing without corrugating was used. As the intermediate sheet and the article back sheet of the lowermost absorbent single body, the same sheet as the intermediate sheet 12 and the article back sheet 13 recovered in bulk by the heat treatment used in the lowermost absorbent simple substance of Example 1 was used.

The top absorbent single-sided surface sheet is a through-air non-woven fabric having a basis weight of 25 g / m ² formed of 50% by mass of hydrophilic-treated polyethylene fiber and 50% by mass of hydrophilic-treated polypropylene fiber, and the back sheet has a basis weight of 20 g / m. ² SMS composite nonwoven fabric.

  The lowermost absorption simple substance and the upper absorption simple substance were prepared by bonding each layer without providing a round seal. Then, the lowermost absorbent single body and the upper absorbent single body were overlapped to form a temporary fixing seal 8.

  The bending rigidity and compression recovery rate of the lowermost absorbent unit could be set higher than that of the upper absorbent unit.

DESCRIPTION OF SYMBOLS 1 Absorbent article 6 Skin side surface 7 Clothing side surface 8 Temporary sticking seal 8a Pressurization part 8b End part 8c Curved-shaped part 10 Lowermost absorption simple substance 11 Top sheet 12 Intermediate sheet 13 Article back sheet 14 Round seal 14a Pressurization part 20 Upper absorbent simple substance 21 Top sheet 22 Intermediate sheet 23 Back sheet 24 Round seal 24a Pressurizing part 101 Absorbent article 110 Lowermost absorbent simple substance 111 Top sheet 112 Intermediate sheet 113 Article back sheet 114 Round seal 120 Upper absorbent simple substance 122 Intermediate sheet 123 Back Sheet 124 Round seal 130 Uppermost absorption element 132 Intermediate sheet 133 Back sheet 134 Round seal 210 Lowermost absorption element 211 Top sheet 214 Round seal 215 Embossed part 220 Upper absorption element 221 Top sheet 224 Round sheet 301 Absorbent article 310 Lowermost absorbent single body 311 Top sheet 312 First intermediate sheet 313 Second intermediate sheet 314 Article back sheet 320 Upper absorbent single body 321 Top sheet 322 Back sheet 401 Absorbent article

Claims (8)

In an absorbent article in which a plurality of absorbent single bodies having a liquid absorption layer are stacked,
Positioning and fixing means for fixing to the clothing is provided on the clothing side surface of the lowermost absorbent unit located at the lowest level, and at least one upper absorbent unit is detachably joined to the skin side surface of the lowermost absorbent unit And
An absorptive article, wherein a compression recovery rate (RC value) of the lowest absorption element is higher than that of the upper absorption element.   A plurality of upper absorbent simplexes are provided, and the upper absorbent simplexes are detachably stacked, and the lower absorbent simplex is more compression recovery rate (RC value) than the upper absorbent simplex located at the uppermost part. The absorbent article of Claim 1 with high.   The absorptive article according to claim 2 in which a plurality of above-mentioned upper absorption simple substance has a higher compression recovery rate (RC value) than what is located in the clothes side than what is located in the skin side.   The absorptive article according to any one of claims 1 to 3 whose compression recovery rate (RC value) of at least one material which constitutes said lowermost absorption simple substance is 40% or more.   The absorbent article in any one of Claims 1 thru | or 4 from which the color of the skin side surface differs between the said lowermost absorption simple substance and the said upper absorption simple substance.   The absorbent article according to any one of claims 1 to 5, wherein an emboss pattern appearing on a skin side surface is different between the lowermost absorbent simple substance and the upper absorbent simple substance.   The absorptive article according to any one of claims 1 to 6 in which at least one functional agent of antibacterial, deodorant, and perfume is contained in at least said lowest part absorption simple substance.   The absorbent article according to claim 7, wherein a tea leaf extract is contained as the functional agent.