JP2015150058A - absorbent article - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an absorbent article that can improve both the effect of preventing leakage of urine or the like from the sides and the absorption performance.SOLUTION: The absorbent article includes a top sheet, a back sheet, and a first absorber 11 provided therebetween. The first absorber 11 includes a plurality of layers of sheet members 12 and a water-absorbent resin 13 between the sheet members 12 and does not contain pulp fibers. The first absorber 11 has edge areas 15 on both sides in the width direction x and a central area 16 disposed between the edge areas 15. The edge areas 15 are provided with a water-absorbent resin 13A having a water absorption rate (vortex method) of 20 seconds or lower, whereas the central area 16 is provided with a water-absorbent resin 13B having a water absorption rate (vortex method) of 40 seconds or higher.

Description

  The present invention relates to absorbent articles such as urine pads (including light incontinence pads), sanitary napkins, disposable diapers and the like.

  DESCRIPTION OF RELATED ART Conventionally, the absorbent article which has an absorber comprised so that it may have a water absorbing resin between sheet | seat members and may not have a pulp fiber is known. For example, Patent Documents 1 to 4 disclose an absorbent article having such an absorber.

JP 2000-238161 A JP 2004-275225 A JP 2009-061230 JP2013-042882A

  The absorbent body configured to have a water-absorbing resin between the sheet members and not to have pulp fibers realizes a high absorption capacity and can be formed thin, while containing pulp fibers. Therefore, the absorption rate of body fluid such as urine tends to be slow. Therefore, there has been room for improvement in terms of preventing side leakage, such as when urine is excreted in large quantities at once. In addition, once the water absorbent resin disposed between the sheet members absorbs urine or the like, the water absorbent resin swells, so that diffusion of urine or the like is likely to be inhibited, and the absorption performance of the entire absorbent body may be reduced. was there. In this regard, increasing the absorption rate of urine etc. to increase the effect of preventing side leakage and ensuring the diffusibility of urine etc. to increase the absorption performance are contradictory, and increase both performances simultaneously. Was difficult.

  The present invention has been made in view of the above circumstances, and an object thereof is to provide an absorbent body configured to have a water-absorbent resin between sheet members so as not to have pulp fibers, and to prevent side leakage of urine and the like. An object of the present invention is to provide an absorbent article capable of improving both the absorption performance and the absorption performance.

  The absorbent article of the present invention that has solved the above problems is an absorbent article having a width direction and a front-rear direction, and having a top sheet, a back sheet, and a first absorbent body provided therebetween. The first absorbent body includes a plurality of sheet members, is configured to have a water-absorbent resin between the sheet members and no pulp fibers, and between the end regions on the both sides in the width direction. A water-absorbing resin having a water absorption rate by a vortex method of 20 seconds or less in the end region; a water-absorbing resin having a water absorption rate of 40 seconds or more by a vortex method in the central region; It is characterized in that is arranged.

  In the absorbent article of the present invention, since the water absorbent resin having a high water absorption rate is arranged in the end region of the first absorbent body, the urine excreted from the wearer spreads in the width direction on the first absorbent body. However, urine and the like are quickly absorbed by the water-absorbing resin disposed in the end region, and side leakage of urine and the like is less likely to occur. On the other hand, since a water-absorbing resin having a slow water absorption rate is disposed in the central region of the first absorbent body, urine excreted from the wearer easily diffuses in the central region, and is disposed in the first absorbent body. The water-absorbing resin contributes to the absorption of urine and the like in a wide range, and can improve the absorption performance of urine and the like.

  In the first absorbent body, it is preferable that the sealing members are formed by joining the sheet members to each other on both sides of each end region in the width direction. If the 1st absorber is formed in this way, the water absorption resin distribute | arranged to the edge part area | region will swell by absorbing urine etc., and an edge part area | region will swell easily up and down easily. As a result, a diffusion prevention wall is formed by the end region, so that urine and the like are less likely to diffuse outward in the width direction, and the side leakage prevention effect of urine and the like is enhanced.

  The first absorber includes, for example, an end region in which a water absorbing resin having a water absorption speed of 20 seconds or less by a vortex method is disposed, and a center in which a water absorbing resin having a water absorption speed of 40 seconds or more by a vortex method is disposed. A region is formed on the same plane. If the first absorbent body is formed in this manner, even if urine excreted in the central region diffuses in the width direction, the urine and the like are surely secured by the water-absorbing resin disposed in the end region and having a high water absorption rate. It becomes easy to be absorbed and fixed to. Further, the water absorbing resin in the end region absorbs urine and the like, so that the end region is raised, and the urine and the like are dammed up by the end region, and the side leakage preventing effect is enhanced.

  The first absorbent body has an upper absorbent layer that exists only in the end region, and a lower absorbent layer that exists in the end region and the central region, and the upper absorbent layer has a water absorption rate of 20 seconds or less by vortex method. A water absorbent resin having a water absorption rate of 40 seconds or more by a vortex method may be disposed in the lower absorbent layer. Thus, if the 1st absorber is formed, it will become easy to form a high diffusion prevention wall in an end part field, and the side leakage prevention effect of urine etc. will increase.

  It is preferable that the 2nd absorber containing a water absorbing resin and a pulp fiber is provided in the back seat | sheet side of the 1st absorber. If the second absorbent body is provided on the back sheet side of the first absorbent body, urine or the like that has passed through the first absorbent body or overflowed from the first absorbent body is absorbed by the second absorbent body. The effect of preventing leakage from the side increases.

  The second absorber preferably has a groove or opening extending in the front-rear direction so as to overlap the central region of the first absorber. By providing the groove or opening in the second absorbent body in this way, urine or the like that has passed through the central region of the first absorbent body can easily diffuse the second absorbent body in the front-rear direction. Will be absorbed quickly.

  The absorbent article of the present invention is provided with rising flaps extending in the front-rear direction on both sides in the width direction of the top sheet, and the first absorbent body is provided inward in the width direction with respect to the base portion from which the rising flaps rise. The second absorbent body is preferably provided so as to extend outward in the width direction from the base portion of the rising flap. Thus, if the first absorber and the second absorber are provided, even if a large amount of urine or the like is excreted on the first absorber and the urine or the like overflows from the first absorber, urine or the like Is transferred to the second absorber through the gap between the first absorber and the base of the rising flap, and is suitably absorbed by the second absorber. As a result, the effect of preventing side leakage of urine and the like is enhanced.

  It is also preferable that the end region of the first absorber is provided so as to overlap with the base portion that is the starting point of the rising flap. If the first absorbent body is provided in this way, the water absorbent resin disposed in the end region of the first absorbent body absorbs urine and the like, and the end region expands in the vertical direction, so that the base portion of the rising flap is It is lifted upward, and a high leakage barrier is formed by the rising flap. As a result, the effect of preventing side leakage of urine and the like is enhanced.

  The absorbent article of the present invention has a first absorbent body that has a water-absorbing resin between sheet members and has no pulp fiber, and absorbs water in an end region in the width direction of the first absorbent body. A water-absorbing resin having a high speed is arranged, and a water-absorbing resin having a low water absorption speed is arranged in the central region in the width direction. Therefore, the urine excreted from the wearer is easily diffused in the central region, and the water absorbent resin disposed in the first absorber contributes to the absorption of urine in a wide range, and the absorption performance of urine and the like is enhanced. . On the other hand, even if urine or the like spreads in the width direction on the first absorbent body, urine or the like is quickly absorbed by the water-absorbing resin disposed in the end region, so that side leakage of urine or the like is less likely to occur.

An example of the width direction sectional view of the 1st absorber provided in the absorptive article of the present invention is expressed. The partial notch top view of the 1st absorber shown in FIG. 1 is represented. The other example of the width direction sectional drawing of a 1st absorber is represented. The further another example of the width direction sectional drawing of a 1st absorber is represented. An example of the absorbent article provided with the 1st absorber shown in FIG. 1 and FIG. 2 is represented, and the top view of an absorbent article is represented. The VI-VI sectional view of the absorptive article shown in Drawing 5 is expressed.

  The absorbent article of the present invention has a top sheet, a back sheet, and an absorbent body provided between them. Examples of the absorbent article of the present invention include urine pads (including incontinence pads), disposable diapers, sanitary napkins and the like.

  The absorbent article has a front-rear direction and a width direction. The “front-rear direction” means a direction extending in the front-rear direction of the wearer's crotch when the wearer wears the absorbent article. “Width direction” means a direction that is on the same plane as the absorbent article and is orthogonal to the front-rear direction. A direction on a plane formed from the front-rear direction and the width direction is defined as a plane direction. In the present invention, the “upper side” means the wearer side when the absorbent article is worn, and the “lower side” is the side opposite to the wearer when the absorbent article is worn, that is, the outer side. Means. A direction extending from the upper side to the lower side is defined as a vertical direction.

  The shape of the absorbent article is not particularly limited. When the absorbent article is a urine pad, examples of the shape of the absorbent article include a substantially rectangular shape, an hourglass shape, a gourd shape, a battledore shape, and the like.

  When the absorbent article is a disposable diaper, the absorbent article includes, for example, a front abdomen, a back part, and a crotch part provided between them and provided with an absorber. As a disposable diaper, for example, an absorbent main body in which an absorbent body is disposed between a top sheet and a back sheet is provided on the skin side surface of a pant member including a front abdomen, a back part, and a crotch part located between them. May be. At this time, a substantially rectangular shape or the like is shown as the shape of the absorbent main body. Moreover, as a disposable diaper, the laminated body by which the absorber was distribute | arranged between the top sheet | seat and the back sheet | seat may form a front part, a back part, and a crotch part located among these. In addition, a front part corresponds to the part which contacts a wearer's belly side when wearing a disposable diaper, and a back part corresponds to the part which contacts a wearer's back side when wearing a disposable diaper. A crotch part is located between a front part and a back part, and is corresponded to the part which hits a wearer's crotch.

  When the absorbent article is a disposable diaper, the disposable diaper is an open type (tape type) disposable in which a pair of fastening members are provided on the left and right ends of the back portion, and formed into a pants shape when worn by the fastening members. It may be a diaper or a pants-type disposable diaper in which a waist opening and a pair of leg openings are formed.

  The top sheet is a sheet located on the wearer side when the absorbent article is worn, and is preferably liquid permeable. As the top sheet, for example, a nonwoven fabric formed from hydrophilic fibers such as cellulose, rayon, and cotton, and a hydrophobic property such as polyolefin (eg, polypropylene, polyethylene), polyester (eg, PET), polyamide (eg, nylon), etc. A non-woven fabric formed from fibers, in which the surface of hydrophobic fibers is hydrophilized with a surfactant, can be used. Further, as the top sheet, a woven fabric, a knitted fabric, a plastic film in which holes are formed, or the like may be used.

  The back sheet is a sheet located on the side opposite to the wearer when the absorbent article is worn, that is, on the outside, and is preferably liquid-impermeable. As the back sheet, a non-woven fabric formed from hydrophobic fibers such as polyolefin (for example, polypropylene, polyethylene), polyester (for example, PET), polyamide (for example, nylon), a plastic film, or the like can be used. Moreover, you may use the laminated body of a nonwoven fabric and a plastic film. In the present invention, the liquid impermeability includes the meaning of water repellency.

  The pant member may be liquid permeable or liquid impermeable, and a sheet material usable for a top sheet or a back sheet can be used. The pant member is preferably formed by laminating the outer sheet on the inner sheet, and more preferably formed by laminating the liquid-impermeable outer sheet on the hydrophilic inner sheet.

  When using a nonwoven fabric as each sheet material demonstrated above, it is preferable to use a spunbond nonwoven fabric, an air through nonwoven fabric, a point bond nonwoven fabric, a melt blown nonwoven fabric, an airlaid nonwoven fabric, an SMS nonwoven fabric, etc. as a nonwoven fabric.

  The absorbent article is preferably provided with rising flaps on both sides in the width direction. By providing the rising flap, side leakage of urine and the like is prevented. The rising flaps are preferably provided on both sides of the top sheet in the width direction, so that urine excreted from the wearer penetrates the top sheet without forming a liquid pool between the rising flaps. It becomes easy to be absorbed quickly by the absorber.

  The rising flap is formed, for example, by joining side sheets extending in the front-rear direction on both sides in the width direction of the top sheet and providing an elastic member inward in the width direction of the side sheet. By providing the side sheet and the elastic member in this manner, the inner side in the width direction of the side sheet rises toward the wearer's skin due to the contraction force of the elastic member, and a rising flap is formed. The rising flap or the side sheet is preferably composed of a liquid-impermeable plastic film, a liquid-impermeable nonwoven fabric, or the like.

  As the elastic member provided on the rising flap, an elastic stretchable material used for absorbent articles such as ordinary disposable diapers such as polyurethane yarn, polyurethane film, and natural rubber can be used. The elastic member is preferably fixed in a stretched state with a hot melt adhesive. For example, polyurethane yarn having a fineness of 40 to 1,240 dtex is stretched and arranged at a magnification of 1.1 to 5.0 times and fixed. As the joining means, a rubber-based hot melt adhesive is preferably used. The magnification is 1.0 in the non-expanded state.

  The absorber is disposed between the top sheet and the back sheet, and absorbs and holds urine excreted from the wearer and permeated through the top sheet. The absorbent article of the present invention includes a first absorbent body that includes a plurality of layers of sheet members as the absorbent body, and has a water absorbent resin between the sheet members so as not to have pulp fibers. Since the 1st absorber is constituted so that it may have a water absorption resin between sheet members, and may not have a pulp fiber, it can be formed thin, having a high absorption capacity. As will be described later, the absorbent article may have a second absorbent body as an absorbent body on the back sheet side of the first absorbent body, and the second absorbent body contains a water absorbent resin and pulp fibers. It is preferable. The first absorber is preferably disposed on the uppermost side of the absorber, and when the second absorber is provided, the first absorber is provided adjacent to the second absorber.

  The first absorbent body is provided with sheet members on the upper side and the lower side of the water-absorbent resin, so to speak, it has an upper sheet member and a lower sheet member. The upper sheet member and the lower sheet member may be composed of separate sheet members, and one sheet member is folded, and the folded one side is used as the upper sheet member and the other side is used as the lower sheet member. Also good.

  As long as the first absorbent body includes a plurality of sheet members and is configured so as to have a water-absorbing resin between the sheet members and no pulp fibers, the first absorbent body may be formed by being overlapped. . For example, the first absorbent body is configured by laminating an upper absorbent layer and a lower absorbent layer, each of the upper absorbent layer and the lower absorbent layer includes a plurality of sheet members, and a water absorbent resin between the sheet members. It may be configured so as to have no pulp fiber. In this case, a plurality of layers in which the water absorbent resin is arranged (that is, the water absorbent resin layer) are formed. Of course, the first absorbent body may be formed with only one water-absorbing resin layer.

  The sheet member provided in the first absorbent body is liquid permeable, for example, a nonwoven fabric formed from hydrophilic fibers such as cellulose, rayon, and cotton, polyolefin (for example, polypropylene, polyethylene), polyester (for example, PET). A non-woven fabric formed from hydrophobic fibers such as polyamide (for example, nylon), the surface of the hydrophobic fibers being hydrophilized with a surfactant can be used. Further, a woven fabric, a knitted fabric, a perforated plastic film or the like may be used as the sheet member. Preferably, a non-woven sheet member (non-woven sheet) is used as the sheet member.

  In the first absorbent body, the water absorbent resin is disposed between the upper sheet member and the lower sheet member, but the pulp fiber is not disposed between these sheet members. In addition, in the 1st absorber, presence of the pulp fiber mixed unavoidable on manufacture is accept | permitted. Since a 1st absorber is comprised so that it may have a water absorbing resin between a sheet | seat member, and it may not have a pulp fiber, it can be formed thin, having a high absorption capacity.

  Examples of water-absorbing resins include polyacrylic acid-based water-absorbing resins such as sodium polyacrylate; starch-acrylic graft copolymers, starch-acrylic acid graft copolymers, starch-acrylamide graft copolymers, and other starch-based water-absorbing resins. Water-absorbing resin: Polyvinyl alcohol-based water-absorbing resin such as crosslinked polyvinyl alcohol can be used. As the water-absorbing resin, it is preferable to use a polyacrylic acid-based water-absorbing resin such as sodium polyacrylate because it has a high liquid absorption.

  A 1st absorber has an edge part area | region and the center area | region located among these on both sides of the width direction. The end region is composed of a region including one end in the width direction of the first absorber and a region including the other end. The central region is provided adjacent to each other between the end region on one side and the end region on the other side of the first absorber. The length in the width direction of the end region and the central region of the first absorber is not particularly limited, but the central region is 25% to 80% (more preferably 30% to the length in the width direction of the first absorber). 75%) is preferably provided. In addition, it is preferable that the edge part area | region and center area | region of a 1st absorber are respectively formed over the whole front-back direction.

  By the way, conventionally, an absorbent body configured to have a water-absorbent resin between sheet members and not to have pulp fibers can realize a high absorption capacity, but absorbs urine and the like because it does not contain pulp fibers. The speed tends to be slow, so there is room for improvement in terms of preventing side leakage of urine and the like. Further, once the water-absorbing resin absorbs urine or the like, the water-absorbing resin swells, so that diffusion of urine or the like in the absorbent body is likely to be inhibited, and there is a concern that the absorption performance of urine or the like may be reduced. In this regard, increasing the absorption rate of urine etc. to increase the effect of preventing side leakage and ensuring the diffusibility of urine etc. to increase the absorption performance are contradictory, and increase both performances simultaneously. Was difficult.

  Therefore, in the absorbent article of the present invention, a water-absorbing resin having a water absorption speed of 20 seconds or less by the vortex method is arranged in the end region of the first absorber, and a water absorption speed by the vortex method is 40 seconds or more in the central region. The water-absorbing resin is arranged. That is, a water-absorbing resin having a relatively high water absorption rate is disposed in the end region of the first absorber, and a water-absorbing resin having a relatively low water absorption rate is disposed in the central region. In the following description, a water-absorbing resin having a water absorption rate of 20 seconds or less by the vortex method is referred to as a “fast-acting water-absorbing resin”, and a water-absorbing resin having a water absorption rate of 40 seconds or more by the vortex method is referred to as a “slow-acting water-absorbing resin” May be called.

  In the absorbent article of the present invention, since the fast-acting water-absorbent resin is arranged in the end region of the first absorbent body, even if urine excreted from the wearer spreads in the width direction on the first absorbent body. Urine and the like are quickly absorbed by the fast-acting water-absorbing resin disposed in the end region, and side leakage of urine and the like is less likely to occur. On the other hand, the central region of the first absorbent body is susceptible to urine excreted from the wearer, and since the slow-acting water-absorbing resin is arranged in the central region, urine and the like easily diffuse in the central region, The water absorbent resin disposed in the first absorbent body contributes to the absorption of urine and the like in a wide range, and the absorption performance of urine and the like can be enhanced.

  The water absorption speed of the fast-acting water-absorbent resin by the vortex method is 20 seconds or less, preferably 15 seconds or less, and more preferably 10 seconds or less. On the other hand, the lower limit of the water absorption rate is not particularly limited, but the water absorption rate by the vortex method of the fast-acting water absorbent resin may be, for example, 1 second or more, and more preferably 2 seconds or more. As a water-absorbing resin having a water absorption rate of 20 seconds or less by vortex method, for example, Aqua Keep (registered trademark) 10SH-PF manufactured by Sumitomo Seika Co., Ltd. can be used.

  The water absorption rate of the slow-acting water-absorbent resin by the vortex method is 40 seconds or more, preferably 60 seconds or more, more preferably 80 seconds or more, and further preferably 100 seconds or more. On the other hand, the upper limit of the water absorption rate is not particularly limited, but the water absorption rate by the vortex method of the slow-acting water-absorbent resin is preferably 300 seconds or less from the viewpoint that urine or the like is suitably fixed by the water-absorbent resin. 240 seconds or less are more preferable. As the water-absorbing resin having a water absorption rate of 40 seconds or more by the vortex method, a water-absorbing resin conventionally used for absorbent articles can be used.

  The water absorption rate of the water absorbent resin by the vortex method is measured according to JIS K 7224 (1996 edition). Specifically, the water absorption speed is obtained as follows. A 100 mL glass beaker with 50 mL of physiological saline (0.9 wt% sodium chloride water) and a magnetic stirrer chip (center diameter 8 mm, both ends diameter 7 mm, length 30 mm, surface coated with fluororesin ) And the beaker is placed on a magnetic stirrer (HPS-100 manufactured by ASONE). The rotational speed of the magnetic stirrer is adjusted to 600 ± 60 rpm, and the physiological saline is stirred. Add 2.0 g of the water-absorbing resin into the liquid at the center of the vortex of the saline solution being stirred, and start counting when the water-absorbing resin has been introduced into the beaker. Stop the timing at the moment when it breaks (when the vortex disappears and the liquid surface becomes flat), and record the time (in seconds) as the water absorption rate. The measurement is performed 5 times (n = 5), the values at each of the upper and lower points are deleted, and the average value of the remaining three points is taken as the measured value. These measurements are performed at 23 ± 2 ° C. and a relative humidity of 50 ± 5%, and are measured after storing the water absorbent resin in the same environment for 24 hours or more before the measurement.

  The water-absorbing resin is removed from the absorbent article as follows. When taking out water absorbing resin from a 1st absorber, the water absorbing resin distribute | arranged between sheet members is taken out by isolate | separating the sheet member which has arranged water absorbing resin in between. At this time, the water absorbent resin is taken out from each of the end region and the central region, and the water absorption rate of the water absorbent resin arranged in each region is measured. As will be described later, when the second absorbent body has a water-absorbing resin and pulp fibers, and there is a need to measure the water absorption speed of the water-absorbing resin disposed in the second absorbent body, By separating the pulp fiber mixture into the water absorbent resin and the pulp fiber using a sieve, the water absorbent resin is taken out.

  It is preferable that only the slow-acting water-absorbing resin is disposed in the central region of the first absorbent body. If only the slow-acting water-absorbing resin is disposed in the central region of the first absorbent body, urine or the like received from the wearer is likely to diffuse in the planar direction in the central region, and the water-absorbent disposed in the first absorbent body. Resin tends to contribute to absorption of urine over a wide range.

  On the other hand, both the fast-acting water-absorbing resin and the slow-acting water-absorbing resin may be disposed in the end region. For example, when the first absorbent body has a plurality of water-absorbing resin layers in the end region, the fast-acting water-absorbing resin may be disposed on at least one water-absorbing resin layer.

  Only the fast-acting water-absorbing resin may be disposed in the end region. For example, when the first absorber has only one water-absorbing resin layer, it is preferable that only the fast-acting water-absorbing resin is disposed in the end region. Further, when the first absorbent body has a plurality of water absorbent resin layers in the end region, the quick-acting water absorbent resin is disposed in each water absorbent resin layer in the end region, thereby increasing the height in the end region. High diffusion prevention walls are easily formed, and the effect of preventing side leakage of urine and the like is enhanced.

  In the first absorbent body, it is preferable that sheet members are joined to each other to form a sealing portion. On the other hand, it is preferable that the non-sealing portion where the sheet members are not joined to each other is provided with a water-absorbing resin to form an absorption region. The sealing portion is formed by joining sheet members with an adhesive, heat sealing (thermal fusion), or ultrasonic bonding. A sealing part is prescribed | regulated as a part where sheet members are joined, and presence of the water absorbing resin in a sealing part is accept | permitted.

  If the sealing part is formed in the 1st absorber, urine etc. will spread easily on the 1st absorber through the sealing part. Moreover, when a 2nd absorber is provided under a 1st absorber, urine etc. permeate | transmits a sealing part, urine etc. become easy to transfer to a 2nd absorber, Urine and the like are preferably easily absorbed.

  In the first absorbent body, it is preferable that the sealing members are formed by joining the sheet members to each other on both sides of each end region in the width direction. If the 1st absorber is formed in this way, the water absorption resin distribute | arranged to the edge part area | region will swell by absorbing urine etc., and an edge part area | region will swell easily up and down easily. As a result, a diffusion preventing wall is formed by the end region, so that urine and the like are less likely to diffuse outward in the width direction, and the side leakage preventing effect of urine and the like is enhanced.

  The sealing portion is preferably provided so as to extend over the entire length of the first absorbent body in the front-rear direction. Moreover, it is preferable that an absorption area | region is provided so that it may extend over the full length of the front-back direction of a 1st absorber. For example, if sealing portions are provided on both sides of the end region in the width direction so as to extend over the entire length of the first absorber in the front-rear direction, a diffusion prevention wall is preferably formed over the entire front-rear direction of the end region. Lateral leakage of urine and the like is easily prevented.

  A total of three or more sealing portions may be provided side by side in the width direction between both ends in the width direction of each end region and in between. In this case, the sealing portion is provided so as to divide the absorption region in the width direction in the end region. If the sealing portion is provided in the end region in this manner, urine or the like easily diffuses the first absorbent body in the front-rear direction through the sealing portion, and more of the water absorbent resin disposed in the end region. Can easily contribute to absorption of urine and the like, and can increase the absorption capacity of the first absorber. In addition, from the point that a higher diffusion prevention wall is formed by the water-absorbing resin in the end region absorbing urine and the like, the sealing portion is provided only on both sides in the width direction in the end region. It is preferable to be provided.

  The sealing part may be provided in the central region. For example, the sealing portion is preferably provided so as to divide the absorption region in the central region in the width direction. If the sealing portion is provided in this manner, urine or the like is easily diffused in the front-rear direction of the first absorbent body in the central region, and more of the water absorbent resin disposed in the central region contributes to absorption of urine or the like. It becomes easy and the absorption performance of a 1st absorber can be improved.

  It is preferable that the sealing portion maintains the bonding between the sheet members even when the first absorber absorbs water. By forming the sealing portion in this manner, the absorption region swells in the vertical direction as the first absorbent body absorbs urine and the like, and the diffusion prevention wall is more easily formed. In order to make it easy to maintain the bonding between the sheet members at the sealing portion, the sheet members are made of rubber adhesive (for example, natural rubber, butyl rubber, polyisoprene, etc.) or styrene elastomer (for example, styrene- Isoprene-styrene block copolymer (SIS), styrene-butadiene-styrene block copolymer (SBS), styrene-ethylene-butadiene-styrene block copolymer (SEBS), styrene-ethylene-propylene-styrene block copolymer (SEPS) or the like), heat sealing (thermal fusion), or ultrasonic bonding is preferable.

The amount of the water absorbent resin disposed in the absorption region of the first absorbent body (that is, the region where the water absorbent resin is disposed in the non-sealing portion) is preferably 50 g / m ² or more, and more preferably 100 g / m ² or more. , also preferably from 400 g / ^{m 2} or less, more preferably 385 g / ^{m 2.} If the water-absorbing resin is disposed in the absorption region in an amount of 50 g / m ² or more, the absorption capacity of the first absorber can be easily increased. On the other hand, if the water-absorbing resin is disposed in the absorption region in an amount of 400 g / m ² or less, the absorbing ability of the water-absorbing resin disposed in the absorption region is easily utilized efficiently.

  The amount (mass per unit area) of the fast-acting water-absorbing resin disposed in the absorption region in the end region is more than the amount (mass per unit area) of the slow-acting water-absorbing resin disposed in the absorption region in the central region. It is preferable that the amount is also small. The fast-acting water-absorbing resin quickly swells in order to absorb urine and the like, so that the entire water-absorbing resin is less likely to contribute to the absorption of urine than the slow-acting water-absorbing resin. Therefore, it is preferable that the amount of the fast-acting water-absorbing resin is less than the amount of the slow-acting water-absorbing resin from the viewpoint of effectively utilizing the absorption capacity of the water-absorbing resin and increasing the absorption capacity as much as possible.

The amount of the fast-acting water-absorbing resin disposed in the absorption region in the end region is, for example, preferably 50 g / m ² or more, more preferably 100 g / m ² or more, and preferably 200 g / m ² or less, 180 g / m. ² or less is more preferable. The amount of the slow-acting water-absorbing resin disposed in the absorption region in the central region is, for example, preferably 100 g / m ² or more, more preferably 150 g / m ² or more, and preferably 400 g / m ² or less, and 385 g / m ^2. The following is more preferable.

  In the first absorbent body, the water absorbent resin is preferably fixed to the sheet member with an adhesive. That is, it is preferable that an adhesive is applied to the sheet member to provide an adhesive layer, and the water absorbent resin is fixed to the sheet member with the adhesive layer. The adhesive layer may be provided on at least one of the upper sheet member and the lower sheet member, but preferably, the adhesive layer is provided on both the upper sheet member and the lower sheet member. It is sufficient that at least a part of the water absorbent resin is fixed to the adhesive layer. For example, the water absorbent resin in contact with the adhesive layer may be fixed to the adhesive layer. If the water-absorbing resin is fixed to the sheet member by the adhesive layer, the water-absorbing resin is less likely to move between the sheet members, and the first absorbent body easily exhibits the desired performance.

  It is preferable that the adhesive layer does not inhibit water absorption or swelling by the water absorbent resin while fixing the water absorbent resin. From this point, the adhesive layer is preferably provided in an intermittent pattern. For example, the adhesive layer is preferably formed by applying the adhesive in a net shape, a stripe shape, or a dotted shape. When the adhesive layer is formed in a net shape, the adhesive may be applied by a curtain spray method, a spiral coating method, an omega coating method, or the like.

  As the adhesive that forms the adhesive layer, an adhesive that can be used to form the sealing portion as described above can be used. Moreover, the sealing part may be formed by the adhesive layer. In this case, the sheet members are joined together by the adhesive layer, thereby forming a sealing portion.

  The structural example of a 1st absorber is demonstrated with reference to drawings. FIG. 1 shows an example of a cross-sectional view of the first absorbent body in the width direction, and FIG. 2 shows a partially cutaway plan view of the first absorbent body shown in FIG. FIG. 3 represents another example of the widthwise sectional view of the first absorbent body, and FIG. 4 represents still another example of the widthwise sectional view of the first absorbent body. In the drawings, arrows x, y, and z represent the width direction, the front-rear direction, and the vertical (thickness) direction of the absorbent article, respectively.

  The first absorber shown in FIGS. 1 and 2 will be described. The first absorbent body 11 includes a plurality of sheet members 12, is configured to have a water absorbent resin 13 between the sheet members 12 and have no pulp fiber, and end regions 15 on both sides in the width direction x. It has a central region 16 located between them. The end region 15 is provided with a fast-acting water absorbent resin 13A having a water absorption rate of 20 seconds or less by a vortex method, and the central region 16 has a slow-acting water absorbent resin having a water absorption rate of 40 seconds or more by a vortex method. 13B is arranged. By forming the first absorbent body 11 in this manner, urine etc. excreted from the wearer diffuses in the plane direction in the central region 16, and urine etc. is absorbed by the water absorbent resin 13 over a wide area, which is efficient. Absorption of urine etc. is realized. On the other hand, urine or the like spreading in the width direction x is quickly absorbed by the fast-acting water-absorbing resin 13A disposed in the end region 15, and side leakage of urine or the like is effectively prevented.

  In the first absorbent body 11 shown in FIGS. 1 and 2, an adhesive is applied to the sheet member 12 to form an adhesive layer 14, and the water absorbent resin 13 is fixed to the sheet member 12 by the adhesive layer 14. Yes. As for the 1st absorber 11, the sealing part 17 is formed in the part to which the sheet members 12 were joined, and the non-sealing part 18 was formed in the part to which the sheet members 12 are not joined. The sealing portion 17 is formed by joining the sheet members 12 to each other by the adhesive layer 14, and the water-absorbing resin 13 is arranged on the non-sealing portion 18 to form an absorption region. Each end region 15 is formed with sealing portions 17 on both sides in the width direction x, so that when the water absorbent resin 13A disposed in the end region 15 absorbs urine or the like, the water absorbent resin 13A is It swells and the end region 15 tends to swell high in the vertical direction z. As a result, a diffusion prevention wall is formed by the end region 15, and urine and the like are less likely to diffuse outward in the width direction x, and the side leakage prevention effect of urine and the like is enhanced.

  In the first absorbent body 11 shown in FIGS. 1 and 2, the end region 15 where the fast-acting water-absorbing resin 13A is disposed and the central region 16 where the slow-acting water-absorbing resin 13B is disposed are formed on the same surface. Has been. If the first absorbent body 11 is formed in this way, the fast-acting water-absorbing resin 13A is disposed in the end region 15 formed on the same plane as the central region 16, and thus is excreted in the central region 16. Even if the urine or the like diffuses in the width direction x, the quick-acting water-absorbing resin 13A in the end region 15 is likely to be reliably absorbed and fixed. Further, the fast-acting water-absorbing resin 13A in the end region 15 absorbs urine and the like, so that the end region 15 rises and the urine is blocked by the end region 15 and the side leakage preventing effect is enhanced. .

  Next, the first absorber shown in FIGS. 3 and 4 will be described. In the following, the description overlapping with the above is omitted. 3 and FIG. 4 are shown with some reference numerals omitted, but the omitted reference numerals are applied to FIGS. 3 and 4 in the same manner based on FIG.

  The first absorbent body 11 shown in FIG. 3 has an upper absorbent layer 11U that exists only in the end region 15, and a lower absorbent layer 11L that exists in the end region 15 and the central region 16, and the upper absorbent layer A fast-acting water-absorbing resin 13A is disposed in 11U, and a slow-acting water-absorbing resin 13B is disposed in the lower absorbent layer 11L. Specifically, the end region 15 is composed of the upper absorbent layer 11U and the lower absorbent layer 11L, and the central region 16 is composed of only the lower absorbent layer 11L. Only the fast-acting water-absorbing resin 13 </ b> A is disposed in the end region 15, and only the slow-acting water-absorbing resin 13 </ b> B is disposed in the central region 16. The first absorbent body 11 shown in FIG. 3 has the first absorbent body shown in FIG. 1 as the lower absorbent layer 11L, and the upper absorbent layer 11U on which the fast-acting water-absorbing resin 13A is arranged is the end. It is provided in the partial area 15. If the first absorbent body 11 is thus formed, the rapid-acting water-absorbing resin 13A in the end region 15 absorbs urine and the like, so that a high diffusion prevention wall is formed in the end region 15. The effect of preventing side leakage of urine, etc. is enhanced.

  The first absorbent body 11 shown in FIG. 4 also has an upper absorbent layer 11U that exists only in the end region 15, and a lower absorbent layer 11L that exists in the end region 15 and the central region 16, and the upper absorbent layer. A fast-acting water-absorbing resin 13A is disposed in 11U, and a slow-acting water-absorbing resin 13B is disposed in the lower absorbent layer 11L. However, in the first absorbent body 11 shown in FIG. 4, only the slow-acting water-absorbing resin 13B is disposed on the lower absorbent layer 11L. Therefore, in the end region 15, the fast-acting water-absorbing resin 11U is disposed on the upper absorbent layer 11U. The resin 13A is disposed, and the slow-acting water-absorbing resin 13B is disposed in the lower absorbent layer 11L. If the first absorbent body 11 is formed in this way, the lower absorbent layer 11L can easily contribute to the absorption of urine and the like over the entire plane direction, and the absorption efficiency of the urine and the like can be increased, and the upper absorption layer When the layer 11U absorbs urine and the like, a diffusion prevention wall is formed in the end region 15, and side leakage of urine and the like can be prevented. In addition, the first absorbent body 11 in which the slow-acting water-absorbing resin 13B is disposed in the central region 16 and the fast-acting water-absorbing resin 13A is disposed in the end region 15 can be easily manufactured.

  Although not shown in the drawings, when the first absorbent body is composed of an upper absorbent layer and a lower absorbent layer as shown in FIGS. 3 and 4, the first absorbent body is interposed between the sheet members. The lower absorbent layer is formed by folding an absorbent sheet body having a water absorbent resin and not having pulp fibers at both ends in the width direction, and the upper absorbent layer is formed from both folded ends. May be formed from an intermediate portion between both ends. If the first absorbent body is formed in this way, even if urine or the like diffuses to the edge in the width direction in the lower absorbent layer, the urine or the like is further outward in the width direction by the folded portion of the absorbent sheet body. Diffusion to the urine is prevented, and the effect of preventing side leakage of urine and the like is further enhanced.

  Next, the second absorber will be described. In the absorbent article of the present invention, a second absorbent body may be provided on the back sheet side of the first absorbent body as the absorbent body, and the second absorbent body preferably contains a water absorbent resin and pulp fibers. By providing the second absorbent body on the back sheet side of the first absorbent body, urine or the like that has passed through the first absorbent body or overflowed from the first absorbent body is absorbed by the second absorbent body. The effect of preventing leakage from the side increases.

  The water absorbent resin disposed in the second absorbent body may be the same as or different from the water absorbent resin disposed in the first absorbent body. As the pulp fiber contained in the second absorber, defibrated pulp fiber is preferably used, and the defibrated pulp fiber is preferably used as a fiber mass. By containing pulp fibers, the second absorbent achieves rapid absorption of urine and the like, and diffusibility of urine and the like in the second absorbent is enhanced. The 2nd absorber contains water absorbing resin, and the holding | maintenance capability, such as urine, is improved.

  It is preferable that the second absorbent body is provided with a water absorbent resin having a water absorption speed of 40 seconds or more by a vortex method. If the water absorbent resin arranged in the second absorbent body has such a water absorption rate, the diffusibility of urine and the like in the second absorbent body is enhanced, and the absorbent capacity of the second absorbent body is utilized over a wide range. Become so. The water absorption rate by the vortex method of the water absorbent resin arranged in the second absorber is more preferably 60 seconds or more, further preferably 80 seconds or more, and particularly preferably 100 seconds or more. On the other hand, the upper limit of the absorption rate is not particularly limited, but the water absorption rate by the vortex method of the water absorbent resin disposed in the second absorbent body is such that urine or the like is suitably fixed by the water absorbent resin, 300 seconds or less are preferable, and 240 seconds or less are more preferable.

  The content of the water absorbent resin in the second absorber is not particularly limited, but is preferably 5% by mass or more, more preferably 10% by mass or more, and preferably 40% by mass or less, more preferably 30% by mass or less. If the content of the water absorbent resin is 5% by mass or more, the retention capacity of the second absorbent body such as urine is enhanced, and if the content of the water absorbent resin is 40% by mass or less, the second absorbent body such as urine. Increased diffusibility.

The basis weight of the second absorber is preferably 90 g / m ² or more, more preferably 100 g / m ² or more, preferably 150 g / m ² or less, and more preferably 140 g / m ² or less. If the basis weight in the range of 90g / m ² ~150g / m ² of the second absorbent body, not too thick thickness of the second absorber, tends to give a second absorber having excellent absorption performance such as urine .

  The second absorber is preferably provided with a groove or opening extending in the front-rear direction. For example, when the second absorbent body has a molded body containing a water-absorbent resin and pulp fibers, it is preferable that a groove or an opening extending in the front-rear direction is formed in the molded body. At this time, the groove or opening of the second absorber is preferably provided so as to overlap the central region of the first absorber. By providing the groove or opening in the second absorbent body in this way, urine or the like that has passed through the central region of the first absorbent body can easily diffuse the second absorbent body in the front-rear direction. Will be absorbed quickly.

  In the present invention, the “opening” is provided penetrating in the vertical direction, while the “groove” means a depression formed on the surface and is defined as having a bottom surface. The groove or opening may be provided on the upper surface of the second absorbent body. When the groove or opening is formed in the molded body of the second absorbent body, the groove or opening of the molded body may be covered with a covering sheet. .

  The shape of the groove or the opening is not particularly limited as long as the groove or the opening is provided so that the length in the front-rear direction is longer than the length in the width direction. Examples of the shape of the groove or the opening include a rectangle, a rectangle with rounded corners, an ellipse, a polygon, an hourglass shape, and a dumbbell shape.

  The number of grooves or openings may be one or plural. When a plurality of grooves or openings are provided, the plurality of grooves or openings are preferably provided side by side in the width direction. In addition, it is preferable to provide one or two grooves or openings from the viewpoint of securing both the absorption capacity and diffusibility of the second absorber. When only one groove or opening is provided, the groove or opening is preferably provided at the center in the width direction of the second absorber, that is, the center line in the width direction of the second absorber (that is, the front-rear direction). It is preferable to be provided so as to include a center line extending in When two grooves or openings are provided, it is preferable that two grooves or openings extending in the front-rear direction are provided side by side in the width direction. In this case, the groove or the opening is preferably provided so as to be substantially symmetric with respect to the center line in the width direction of the second absorber.

  It is preferable that the groove | channel or opening provided in a 2nd absorber is provided so that a wearer's urination part vicinity may be faced. For example, the groove or opening of the second absorber is at least 30% to 60% (more preferably) when the front end is 0% and the rear end is 100% relative to the longitudinal direction of the second absorber. Is preferably in the range of 25% to 70%.

  The groove | channel or opening of a 2nd absorber may be provided in the whole front-back direction of a 2nd absorber, and may be provided in a part of front-back direction. In addition, it is preferable that the groove | channel or opening of a 2nd absorber is provided only in a part of the front-back direction of a 2nd absorber, and by providing a groove | channel or opening in a 2nd absorber in this way, urine etc. are front-back. It becomes difficult to leak in the direction. In this case, it is preferable that both ends of the groove or the opening in the front-rear direction are provided so as to be positioned inward in the front-rear direction than the front end and the rear end of the second absorber. For example, the groove or opening of the second absorber has a front end of 0% and a rear end of 100% relative to the longitudinal direction of the second absorber, and the front end of the groove or opening is 10% to 30%. % (More preferably 15% to 25% range), and the rear end of the groove or opening is preferably 60% to 90% (more preferably 70% to 85% range). .

  The second absorbent body is preferably provided with a groove. By providing a groove instead of an opening in the second absorbent body, leakage from the back sheet side of the absorbent article hardly occurs, and urine or the like is easily absorbed into the second absorbent body.

  When a groove is provided in the second absorber, the groove can be easily formed in the second absorber if the second absorber is configured as follows. That is, the second absorbent body has a molded body containing a water-absorbent resin and pulp fibers, and the molded body includes an upper molded body provided on the top sheet side and a lower molded body provided on the back sheet side. An opening extending in the front-rear direction is provided in the upper molded body, and a groove extending in the front-rear direction may be formed in the molded body by providing the lower molded body so as to overlap the opening of the upper molded body. In this case, the lower molded body is arranged below the upper molded body so as to completely cover the opening of the upper molded body.

  The width (length in the width direction) of the groove or opening of the second absorber is, for example, preferably 8 mm or more, more preferably 10 mm or more, and preferably 30 mm or less, more preferably 25 mm or less. If the width of the groove or opening of the second absorber is 8 mm or more, the diffusibility of urine or the like in the front-rear direction is enhanced, and if the width of the groove or opening of the second absorber is 30 mm or less, the second absorption is achieved. The body's absorption capacity increases.

  The length in the front-rear direction of the first absorber and the second absorber is not particularly limited. The length in the width direction of the first absorber and the second absorber is not particularly limited. In addition, since a 1st absorber is comprised so that it may have a water absorbing resin between a sheet | seat member, and it may not have a pulp fiber, and it is formed comparatively thinly, when the shape retainability of a 1st absorber is considered. The second absorbent body is preferably formed to be equal to or longer than the length of the first absorbent body in the front-rear direction and the width direction.

  When the absorbent article is provided with the rising flap, the first absorbent body is provided inward in the width direction from the base that is the starting point of the rising flap, and the second absorbent is wider than the base of the rising flap. It is preferable to be provided so as to extend outward in the direction. In this case, the edge of the 1st absorber in the width direction will be located inward in the width direction rather than the base part of the rising flap. Thus, if the first absorber and the second absorber are provided, even if a large amount of urine or the like is excreted on the first absorber and the urine or the like overflows from the first absorber, urine or the like Is transferred to the second absorber through the gap between the first absorber and the base of the rising flap, and is suitably absorbed by the second absorber. As a result, the effect of preventing side leakage of urine and the like is enhanced.

  When the first absorbent body is provided inward in the width direction from the base portion of the rising flap, the first absorbent body may be provided with the edge in the width direction being separated from the base portion of the rising flap by 10 mm or more inward. It is preferable that the distance is 15 mm or more. If the 1st absorber is provided in this way, it will become easy to transfer urine etc. which overflowed from the 1st absorber to the 2nd absorber quickly. Moreover, it is preferable that the edge of the width direction of the 1st absorber is provided inwardly 40 mm or less from the base part of the standing | starting flap, and it is more preferable that it is 30 mm or less apart. If the 1st absorber is provided in this way, the installation area of a 1st absorber will fully be ensured and the absorption capacity by a 1st absorber will be raised.

  When the rising flap is provided on the absorbent article, it is also preferable that the end region of the first absorbent body is provided so as to overlap the base of the rising flap. If the first absorbent body is provided in this way, the water absorbent resin disposed in the end region of the first absorbent body absorbs urine and the like, and the end region expands in the vertical direction, so that the base portion of the rising flap is It is lifted upward, and a high leakage barrier is formed by the rising flap. As a result, the effect of preventing side leakage of urine and the like is enhanced.

  Next, the structural example of the absorbent article of this invention is demonstrated with reference to FIG. 5 and FIG. 5 and 6 show an absorbent article provided with the first absorbent body shown in FIGS. 1 and 2. FIG. 5: represents the top view which looked at the urine pad as an absorbent article from the top sheet side. 6 represents a VI-VI cross-sectional view of the absorbent article shown in FIG. In FIG. 5, the upper side of the figure corresponds to the front side of the absorbent article, and the lower side of the figure corresponds to the rear side of the absorbent article. The present invention is not limited to the embodiment shown in the drawings.

  The absorbent article 1 includes a top sheet 2, a back sheet 3, and an absorbent body 10 provided therebetween. The top sheet 2 is disposed so as to face the wearer's skin, and allows excretion such as urine to pass through. The excrement that has passed through the top sheet 2 is accommodated by the absorber 10. The back sheet 3 prevents excrement from leaking outside.

  The absorber 10 has the 1st absorber 11 and the 2nd absorber 21 from the top sheet 2 side. The detailed configuration of the first absorber 11 is shown in FIGS. 1 and 2 and is as described above. That is, the first absorbent body 11 includes a plurality of layers of sheet members 12, is configured to have a water absorbent resin 13 between the sheet members 12 and have no pulp fibers, and has a fast-acting water absorbent in the end region 15. Resin 13 </ b> A is disposed, and slow-acting water-absorbing resin 13 </ b> B is disposed in central region 16. The second absorbent body 21 contains a water-absorbent resin and pulp fibers, and is overlapped with the central region 16 of the first absorbent body 11 to form a groove 22 extending in the front-rear direction y. Thus, by providing the 1st absorber 11 and the 2nd absorber 21, the side leakage of urine etc. is prevented effectively and the absorption efficiency of urine etc. is raised. The second absorber 21 may be provided with an opening instead of the groove 22.

  The absorbent article 1 is provided with rising flaps 5 extending in the front-rear direction y on both sides of the top sheet 2 in the width direction x. 5 and 6, the side sheet 4 extending in the front-rear direction y is joined to both sides in the width direction x of the top sheet 2, and the standing elasticity provided at the inner end of the side sheet 4 in the width direction x. The inner end of the side seat 4 rises toward the wearer's skin due to the contraction force of the member 7, thereby forming the rising flap 5. The rising flap 5 prevents lateral leakage of urine or the like in the width direction x. In addition, the rising flap 5 may be joined to the top sheet 2 at the inner surface of the end portion in the front-rear direction y, whereby the rising flap 5 can be easily raised.

  The rising flap 5 has a base 6 as a starting point for rising, the first absorbent body 11 is provided inward in the width direction x with respect to the base 6 of the rising flap 5, and the second absorbent body 21 is formed of the rising flap 5. It is provided so as to extend outward in the width direction x from the base portion 6. Thus, if the 1st absorber 11 and the 2nd absorber 21 are provided, even if urine etc. are discharged | emitted in large quantities and urine etc. overflow from the 1st absorber 11, urine etc. will be 1st absorption. It moves to the second absorbent body 21 through the gap between the body 11 and the base 6 of the rising flap 5 and is suitably absorbed by the second absorbent body 21. As a result, the effect of preventing side leakage of urine and the like is further enhanced.

1: Absorbent article 2: Top sheet 3: Back sheet 5: Standing flap 6: Base 10: Absorber 11: First absorbent 12: Sheet member 13: Water absorbent resin 15: End region 16: Central region 17: Sealing part 18: Non-sealing part 21: Second absorber 22: Groove

Claims (8)

An absorbent article having a width direction and a front-rear direction, having a top sheet, a back sheet, and a first absorbent body provided therebetween,
The first absorbent body includes a plurality of sheet members, and is configured to have a water-absorbing resin between the sheet members and no pulp fiber, and is located on both sides in the width direction and between the end regions. Has a central area to
A water-absorbing resin having a water absorption rate by a vortex method of 20 seconds or less is disposed in the end region,
An absorbent article, wherein a water-absorbing resin having a water absorption rate by a vortex method of 40 seconds or more is disposed in the central region.   2. The absorbent article according to claim 1, wherein the first absorbent body has a sealing portion formed by joining the sheet members to each other on both sides in the width direction of the end regions.   The first absorbent body includes the end region in which a water-absorbing resin having a water absorption speed of 20 seconds or less by a vortex method is disposed, and the water-absorbing resin having a water absorption speed of 40 seconds or more by a vortex method. The absorbent article according to claim 1 or 2, wherein the central region is formed on the same surface. The first absorber has an upper absorbent layer that exists only in the end region, and a lower absorbent layer that exists in the end region and the central region,
The upper absorbent layer is provided with a water absorbent resin having a water absorption speed of 20 seconds or less by a vortex method,
The absorptive article according to claim 1 or 2 with which water absorption resin whose water absorption speed by a vortex method is 40 seconds or more is arranged in said lower absorption layer.   The absorbent article as described in any one of Claims 1-4 by which the 2nd absorber containing a water absorbing resin and a pulp fiber is provided in the back seat | sheet side of the said 1st absorber.   The absorbent article according to claim 5, wherein the second absorbent body overlaps with a central region of the first absorbent body, and is formed with a groove or an opening extending in the front-rear direction. On both sides of the top sheet in the width direction, rising flaps extending in the front-rear direction are provided,
The first absorbent body is provided inward in the width direction from the base that is the starting point of the rising flap.
The absorbent article according to claim 5 or 6, wherein the second absorbent body is provided so as to extend outward in the width direction from the base portion of the rising flap. On both sides of the top sheet in the width direction, rising flaps extending in the front-rear direction are provided,
The absorbent article according to any one of claims 1 to 6, wherein an end region of the first absorbent body is provided so as to overlap a base portion that is a starting point of the rising flap.