JP5554041B2 - Auxiliary absorber and absorbent article provided with the same - Google Patents

Description

  The present invention relates to an auxiliary absorbent body used by being attached to an absorbent article such as a sanitary napkin, a urine pad, or a disposable diaper.

  Conventionally, in order to enhance the leakage prevention effect of absorbent articles, articles that are used in combination with absorbent articles are known. For example, Patent Document 1 discloses a pad body having an elastic hollow body formed of an elastic material and having a hollow inside, and a skin contact sheet that covers the elastic hollow body, and the pad body is fixed to an absorbent article. Auxiliary pads having fixing means are disclosed.

Japanese Patent No. 3847023

  However, the auxiliary pad disclosed in Patent Document 1 is intended to prevent the side leakage of urine and the like by using the flexibility and elasticity of the auxiliary pad to enhance the fit of the absorbent article to the wearer. The auxiliary pad itself does not have a liquid absorption capability.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an auxiliary absorbent body that can quickly absorb bodily fluids such as urine and can effectively prevent side leakage by being attached to an absorbent article. Is to provide.

The auxiliary absorbent body of the present invention that has been able to solve the above problems includes a fiber aggregate layer that contains cellulose fibers and does not contain a water absorbent resin, one or more covering sheets that wrap around the fiber aggregate layer, and the coating Fixing means attached to the outer surface of the sheet, and the fiber aggregate layer is characterized in that the basis weight is 400 g / m ² or more and 1000 g / m ² or less. The auxiliary absorbent body of the present invention is used by attaching the auxiliary absorbent body to the absorbent article because the fiber aggregate layer contains cellulose fibers and does not contain a water absorbent resin and has a high basis weight of 400 g / m ² or more. Thus, the auxiliary absorber can quickly absorb body fluid such as urine, and side leakage of urine and the like is easily prevented.

  The fiber assembly layer has a column shape, the length in the longitudinal direction of the column shape is 50 mm or more and 800 mm or less, the maximum length of the cross section is 10 mm or more and 120 mm or less, and the length in the longitudinal direction is the maximum of the cross section. It is preferably at least twice the length. If the fiber assembly layer has the shape and the size, the auxiliary absorbent body can be easily stowed and placed inside the flap, and side leakage from the absorbent article can be easily prevented.

  It is preferable that the auxiliary absorbent further has a water-absorbing resin layer containing a water-absorbing resin and not containing cellulose fibers on the fixing means side of the fiber assembly layer. If the auxiliary absorbent body has a water-absorbing resin layer on the fixing means side of the fiber assembly layer, the water-absorbing resin absorbs urine or the like absorbed by the fiber assembly layer to increase the amount of absorption of body fluid such as urine. be able to. That is, the auxiliary absorbent body can realize quick absorption of urine and the like by the fiber assembly layer, and can increase the amount of absorption of urine and the like by the water absorbent resin layer.

  The auxiliary absorber of the present invention can quickly absorb body fluid such as urine and can effectively prevent side leakage.

One embodiment of the auxiliary absorber of the present invention is shown. Fig.1 (a) represents the top view of the auxiliary absorber of this invention, FIG.1 (b) represents AA sectional drawing of the auxiliary absorber of Fig.1 (a). The attachment example to the absorbent article of the auxiliary absorber of this invention is represented. The BB sectional drawing of the absorptive article of Drawing 2 is expressed.

  The auxiliary absorbent body of the present invention is used by being attached to an absorbent article. Specifically, it is used by being attached to a disposable diaper, a urine pad, an incontinence pad, a sanitary napkin or the like. The auxiliary absorber of the present invention absorbs urine or the like that the absorbent article could not absorb, or absorbs urine or the like that is temporarily excreted in large quantities, thereby contributing to prevention of side leakage of urine and the like.

  The auxiliary absorbent body of the present invention includes a fiber aggregate layer that contains cellulose fibers and does not contain a water absorbent resin, one or more cover sheets that wrap the fiber aggregate layer, and a fixing means that is attached to the outer surface of the cover sheet. Have

  The fiber assembly layer includes cellulose fibers and does not include a water absorbent resin. Since the fiber assembly layer contains cellulose fibers and does not contain a water-absorbing resin, the fiber assembly layer can realize quick liquid absorption. The fiber assembly layer is particularly excellent in the ability to take in the liquid and diffuse it inside. For example, when a water-absorbing resin is present in addition to cellulose fibers, the water-absorbing resin swells due to liquid absorption, and absorption of body fluids and the like by the cellulose fibers tends to be hindered. However, since the fiber assembly layer used in the present invention does not contain a water-absorbing resin, when the fiber assembly layer comes into contact with a body fluid such as urine, the body fluid can quickly penetrate into the fiber assembly layer.

  The cellulose fiber contained in the fiber assembly layer is not particularly limited as long as it is fibrous cellulose, and natural cellulose fibers such as pulp, cotton and hemp, regenerated cellulose fibers such as rayon and viscose, and the like can be used. By using cellulose fibers in the fiber assembly layer, the auxiliary absorbent body can quickly absorb body fluid such as urine. Cellulose fibers are preferably used as fiber masses from the viewpoint of improving water absorption and water retention. As the cellulose fiber, preferably, cotton or pulp (particularly defibrated pulp fiber) is used.

  The fiber assembly layer does not contain a water absorbent resin. Here, the fiber aggregate layer not containing the water absorbent resin means that the water absorbent resin does not exist in a dispersed state or a mixed state in the fiber aggregate layer, and as described later, adjacent to the fiber aggregate layer. It is not excluded that a water absorbent resin layer is provided. Examples of the water-absorbing resin include polyacrylic acid-based water-absorbing resins such as sodium polyacrylate generally used in absorbent articles, starch-acrylonitrile graft copolymers, starch-acrylic acid graft copolymers, and starch-acrylamide grafts. It is preferable not to include a starch-based water-absorbing resin such as a copolymer and a polyvinyl alcohol-based water-absorbing resin such as a crosslinked polyvinyl alcohol.

  The fiber assembly layer may contain, in addition to cellulose fibers, polyolefin fibers such as polyethylene and polypropylene, heat-fusible fibers such as polyester fibers such as PET, and polyamide fibers. If these fibers are contained in the fiber assembly layer, the shape retention of the fiber assembly layer is easily improved. The exemplified heat-fusible fiber may be hydrophilized with a surfactant or the like in order to increase the affinity with body fluid such as urine.

The fiber aggregate layer has a basis weight of 400 g / m ^{2 to} 1000 g / m ² . The basis weight is preferably 450 g / m ² or more and 900 g / m ² or less. The weight of 400 g / m ² or more is a higher value than the weight of the absorbent core used in general absorbent articles. The auxiliary absorbent body of the present invention has an excellent ability to absorb body fluid such as urine because the fiber assembly layer has a high basis weight. In particular, the auxiliary absorbent body of the present invention can realize rapid body fluid absorption and can prevent side leakage of urine or the like even when a large amount of urine or the like is temporarily discharged.

The auxiliary absorbent body of the present invention tends to be bulky because the fiber assembly layer has a high basis weight. Therefore, as a method of using the auxiliary absorbent, rather than using the auxiliary absorbent in layers to cover a wide part of the absorbent core of the absorbent article, it is partially applied to a place where it is desired to improve the leakage prevention effect and the liquid absorption capacity. It is preferable to use it attached to. For example, when the absorbent article is worn, a liquid pool is likely to be generated in a portion where a gap is formed between the absorbent article and the wearer's skin, and it is preferable to provide an auxiliary absorber in such a portion. . In this case, if the basis weight of the fiber assembly layer is 400 g / m ² or more, it is easy to attach the auxiliary absorbent body to the absorbent article and fill the space between the absorbent article and the wearer's skin. On the other hand, when the basis weight of the fiber assembly layer exceeds 1000 g / m ² , the auxiliary absorbent body becomes too bulky, and when the auxiliary absorbent body is attached to an absorbent article and used, it feels uncomfortable with the auxiliary absorbent body. It becomes easy. Therefore, the upper limit of the basis weight of the fiber assembly layer is set to 1000 g / m ² .

  The shape of the fiber assembly layer is not particularly limited. As described above, since the auxiliary absorbent body of the present invention is preferably used by being partially attached to the absorbent article, the shape of the fiber assembly layer has a shape suitable for such a method of use. It is preferable. In particular, from the viewpoint of enhancing the leakage prevention effect and liquid absorption capacity of the absorbent article, the auxiliary absorbent body is preferably used by being attached to the inside of the rising flap of the absorbent article, and the fiber assembly layer is used in such a usage method. It is preferable to have a suitable shape. Specifically, the fiber assembly layer preferably has a long and thin shape such as a column shape.

  The column shape is not particularly limited as long as a cross section of an arbitrary shape extends in the longitudinal direction. The cross-sectional shape need not be the same throughout the longitudinal direction. As will be described later, the fiber assembly layer is wrapped by a covering sheet. For example, when two covering sheets having the same shape are sealed along the peripheral edge, and the fiber assembly layer is enclosed therein, The cross section of the end portion in the longitudinal direction of the fiber assembly layer tends to be crushed, and the cross-sectional area is smaller at the end portion than in the center in the longitudinal direction. Such a mode is also included in the column shape. The column shape is preferably such that at least the central 60% of the longitudinal direction has substantially the same cross-sectional shape.

  The cross-sectional shape of the columnar shape is not particularly limited, and examples thereof include a circle, an ellipse, a quadrangle, and a quadrangle with rounded corners. The columnar cross-sectional shape is preferably an ellipse or a quadrangle with rounded corners. In this case, it becomes easy to fix the auxiliary absorbent body to the inside of the rising flap, and since the corners of the cross section are rounded, there is little pressure even when the auxiliary absorbent body touches the wearer. In addition, in this invention, a column-shaped cross section means the cross section orthogonal to the longitudinal direction of a column shape.

  The size of the columnar shape is that the length in the longitudinal direction is 50 mm or more and 800 mm or less, the maximum length of the cross section is 10 mm or more and 120 mm or less, and the length in the longitudinal direction is twice or more the maximum length of the cross section. It is preferable. If the length in the longitudinal direction of the columnar shape is 50 mm or more and the maximum length of the cross section is 10 mm or more, body fluid such as urine is absorbed by the auxiliary absorbent body, and side leakage from the absorbent article is easily prevented. . If the length in the longitudinal direction of the columnar shape is 800 mm or less, the maximum length of the cross section is 120 mm or less, and the length in the longitudinal direction is more than twice the maximum length of the cross section, the auxiliary absorber is raised and the inside of the flap Easy to fit in. In addition, the maximum length of the cross section means the longest length among the lengths crossing the columnar cross section. The length in the longitudinal direction is more preferably 100 mm or more and 600 mm or less. The maximum length of the cross section is more preferably 20 mm or more and 70 mm or less.

  Although the fiber assembly layer is wrapped by the covering sheet, the above description regarding the shape and size of the fiber assembly layer means the shape and size of the fiber assembly layer in a state of being wrapped by the covering sheet. For example, when the fiber assembly layer is compressed by being covered with a sheet, it means the shape and size of the fiber assembly layer in the compressed state.

  The fiber assembly layer is wrapped with one or more covering sheets. The fiber assembly layer is held in a predetermined shape by being wrapped in the covering sheet. For example, one sheet may be folded in two, a fiber assembly layer may be sandwiched therebetween, and the periphery of the two folded sheets may be joined, and the fiber assembly layer may be sandwiched between two sheets. The peripheral edges of the sheets may be joined together.

  It is preferable that part or all of the covering sheet is liquid permeable. More preferably, there are many liquid-permeable parts except the part to which the fixing means described later is attached. If the covering sheet has more liquid-permeable portions, the auxiliary absorbent body can easily absorb body fluid such as urine quickly. The portion to which the fixing means is attached may be liquid permeable or liquid impermeable. For example, the fiber assembly layer may be wrapped in one liquid-permeable sheet; the fiber assembly layer is sandwiched between the liquid-permeable sheet and the liquid-impermeable sheet, and the fixing means is liquid-impermeable. It may be attached to the sheet; the fiber assembly layer may be sandwiched between the two liquid-permeable sheets, and the fixing means may be attached to one of the liquid-permeable sheets.

  When a liquid-permeable sheet is used as the covering sheet, as the liquid-permeable sheet, for example, a nonwoven fabric formed from hydrophilic fibers such as cellulose (pulp, cotton, etc.) and rayon can be used. Moreover, it is a nonwoven fabric formed from hydrophobic fibers, such as polypropylene, polyethylene, polyester, polyamide, nylon, etc., and the surface of the hydrophobic fibers made hydrophilic by a surfactant may be used.

  When a liquid-impermeable sheet is used as the covering sheet, as the liquid-impermeable sheet, for example, a nonwoven fabric formed from hydrophobic fibers such as polypropylene, polyethylene, polyester, polyamide, nylon, or a plastic film is used. be able to. Moreover, you may use the laminated body of a nonwoven fabric and a plastic film.

  When using a non-woven fabric as the covering sheet, the non-woven fabric manufactured by the spunbond method, air-through method, point bond method, melt blow method, air laid method or a combination of these methods (for example, SMS method) may be used. .

  In the covering sheet, it is preferable that the peripheral edges of the sheets constituting the covering sheet wrap around the fiber assembly layer and are bonded. The sheets may be joined by, for example, heat fusion, ultrasonic fusion, hot melt adhesive, or the like. In the present invention, the sheets are preferably joined by heat sealing (heat sealing) from the viewpoint that the sheets can be easily sealed even if a fiber aggregate layer having a high basis weight is wrapped.

  Fixing means is attached to the outer surface of the covering sheet. By providing the fixing means, the auxiliary absorbent body of the present invention can be used by being fixed to the absorbent article. Therefore, it is possible to fix the auxiliary absorbent body to any part of the absorbent article, and as a result, it is possible to improve the fit to the wearer, and it is difficult for the auxiliary absorbent body to be detached from the absorbent article. Lateral leakage of body fluid can be effectively prevented.

  The auxiliary absorbent body of the present invention is preferably used by being fixed to the top sheet and / or the rising flap of the absorbent article. Therefore, the fixing means is not particularly limited as long as it is a member that can be attached to the top sheet or the rising flap.

  The fixing means may be appropriately selected according to the material of the top sheet or the rising flap, for example, an adhesive (for example, an adhesive tape, an adhesive layer, etc.) or a hook member (for example, a bowl shape, a bowl shape, a mushroom type, etc.) A member having a hook having a shape of the above may be employed. For example, when the top sheet and the rising flap are made of nonwoven fabric, an adhesive or a hook member may be employed as the fixing member. Further, when the rising flap is made of a plastic film, an adhesive may be adopted as the fixing member.

  As long as a fixing means is attached to the outer surface of a coating sheet, the attachment location and number are not specifically limited. Preferably, the fixing means has a length equal to or less than the length in the longitudinal direction of the columnar shape of the fiber assembly layer and equal to or less than the maximum length of the cross section, and is provided on one surface of the auxiliary absorbent body.

  The auxiliary absorbent body of the present invention essentially has a fiber assembly layer, a covering sheet, and fixing means, and further includes a water absorbing resin layer that contains a water absorbing resin and does not contain cellulose fibers on the fixing means side of the fiber assembly layer. You may have. Preferably, the water absorbent resin layer is provided adjacent to the fixing means side of the fiber assembly layer. When the auxiliary absorber has a water absorbent resin layer, the covering sheet wraps the fiber assembly layer and the water absorbent resin layer.

  If the auxiliary absorbent body has a water-absorbing resin layer on the fixing means side of the fiber assembly layer, the water-absorbing resin absorbs urine or the like absorbed by the fiber assembly layer to increase the amount of absorption of body fluid such as urine. be able to. That is, rapid absorption of urine and the like can be realized by the fiber aggregate layer, and the amount of absorption of urine and the like can be increased by the water absorbent resin layer.

  Examples of the water-absorbing resin contained in the water-absorbing resin layer include polyacrylic acid-based, starch-based, and polyvinyl alcohol-based water-absorbing resins as described above. 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.

  That the water absorbent resin layer does not contain cellulose fibers means that fluffy cellulose fibers are not contained.For example, the water absorbent resin contained in the water absorbent resin layer is coated on a sheet such as tissue paper. Or may be supported. The specific example of a cellulose fiber is as having demonstrated above in the cellulose fiber used for a fiber assembly layer.

  Specific examples of the water absorbent resin layer include the following examples: an embodiment in which the water absorbent resin is supported on one nonwoven fabric; an embodiment in which the water absorbent resin is supported between two nonwoven fabrics; An embodiment in which a resin is wrapped in tissue paper; Further, the water absorbent resin layer may be composed only of the water absorbent resin. In this case, the water absorbent resin is directly supported on the inner surface of the covering sheet to which the fixing means is attached. That is, it is preferable that the water-absorbent resin layer is composed only of the water-absorbent resin, or the water-absorbent resin is supported or coated on a liquid-permeable sheet such as a nonwoven fabric or tissue paper.

  The water absorbent resin layer is preferably provided only on the fixing means side of the fiber assembly layer. That is, it is preferable that the water absorbent resin layer is not provided on the side opposite to the fixing means of the fiber assembly layer. If the water absorbent resin layer is provided on the side opposite to the fixing means of the fiber aggregate layer, when the auxiliary absorbent body absorbs urine etc., the water absorbent resin absorbs water and swells, and further urine from the fiber aggregate layer is obtained. This is because there is a possibility that the absorption of the above may be disturbed.

  The absorbent article to which the auxiliary absorbent body of the present invention is attached will be described. The absorbent article may have a top sheet, a back sheet, an absorbent core provided therebetween, and a rising flap provided along the side edge of the absorbent core. Examples of absorbent articles include disposable diapers, urine pads, incontinence pads, sanitary napkins and the like. The auxiliary absorbent body of the present invention is particularly effective when attached to a disposable diaper or urine pad with a large amount of liquid to be handled.

  The top sheet is preferably composed of a liquid-permeable sheet material. The backsheet is preferably composed of a liquid-permeable or liquid-impermeable sheet material. For example, when the absorbent article is a urine pad, the backsheet may be liquid permeable. As a sheet material used for the top sheet or the back sheet, a liquid-permeable sheet or a liquid-impermeable sheet that can be used as the covering sheet described above may be used.

  The absorbent core is not particularly limited as long as it can absorb excrement such as urine. As the absorbent core, for example, a molded body in which the absorbent material is molded into a predetermined shape is used, or the absorbent material is covered with a paper sheet (for example, tissue paper) or a liquid-permeable nonwoven fabric sheet. Can do. Examples of the absorbent material included in the absorbent core include hydrophilic fibers such as pulverized pulp fibers and cellulose fibers, and the water-absorbing resin described above. As an absorptive material, you may use what mixed or disperse | distributed the water absorbing resin to the aggregate | assembly of a hydrophilic fiber.

  The rising flap is preferably made of a liquid-impermeable sheet material. As the sheet material used for the rising flap, a liquid-impermeable sheet that can be used as the covering sheet described above may be used. For example, the rising flaps may be provided on both sides in the width direction of the upper surface of the absorbent core, or may be provided outside the side edges of the absorbent core. The rising flaps may be formed by raising the inner ends of the side sheets provided on both sides of the top sheet in the width direction. It is preferable that an elastic member is provided at the free end (inward end) of the rising flap, and the rising flap rises toward the wearer's skin by the contraction force of the elastic member, so that a leak-proof wall is easily formed.

  By using the auxiliary absorbent body of the present invention while being attached to the inside of the rising flap, it is possible to effectively prevent lateral leakage of urine and the like from the rising flap. The inner side of the rising flap means the inner side with respect to the width direction when the rising flap is raised. Moreover, you may use the auxiliary | assistant absorber of this invention, attaching to the top sheet inside a standup flap adjacent to a standup flap.

  One embodiment of the auxiliary absorber of the present invention will be described with reference to FIG. Fig.1 (a) represents the top view of the auxiliary absorber of this invention. FIG.1 (b) represents AA sectional drawing of the auxiliary | assistant absorber of Fig.1 (a). In addition, this invention is not limited to the following embodiment.

  The auxiliary absorbent body 1 has a fiber assembly layer 2, a covering sheet 3 that wraps the fiber assembly layer 2, and fixing means 4 attached to the outer surface of the covering sheet 3, and further, fixing means 4 for the fiber assembly layer 2. A water absorbent resin layer 6 is provided adjacent to the side. The fiber assembly layer 2 has a column shape. The covering sheet 3 is composed of two sheets 3A and 3B. The sheet 3A is liquid permeable, and the sheet 3B is liquid permeable or liquid impermeable. The sheet 3 </ b> A and the sheet 3 </ b> B are bonded at the bonding portion 5 formed at the periphery, and as a result, the fiber assembly layer 2 is wrapped in the covering sheet 3.

  One embodiment of the method for using the auxiliary absorbent body of the present invention will be described with reference to FIGS. FIG. 2 shows an example of attaching the auxiliary absorbent body of the present invention to an absorbent article. FIG. 3 is a cross-sectional view taken along the line BB of the absorbent article in FIG. 2 and 3, a urine pad is taken as an example of the absorbent article. In the following description, when the absorbent article is worn, the direction from the abdominal side to the back side is defined as the front-rear direction, and the direction that is on the same plane as the absorbent article and is orthogonal to the front-rear direction is defined as the width direction.

  The absorbent article 11 has a liquid-permeable top sheet 12, a liquid-impermeable back sheet 13, and an absorbent core 14 disposed therebetween, on both sides in the width direction of the top sheet 12. A pair of side seats 15 extending in the front-rear direction are provided. The side sheet 15 is joined to the top sheet 12 at the joining portion 17, and a standing elastic member 18 is provided at the inner end (FIG. 3). In the side seat 15, the inner end of the side seat 15 rises toward the wearer's skin due to the contraction force of the standing elastic member 18, whereby the rising flap 16 is formed. 2 and 3, the auxiliary absorber 1 is attached to the inside of the rising flap 16 by the fixing means 4.

  When the absorbent article 11 is worn, the top sheet 12 is disposed so as to face the skin of the wearer's crotch. When bodily fluids such as urine are excreted, the urine passes through the top sheet 12 and is absorbed by the absorbent core 14, and the urine is also absorbed by the auxiliary absorbent body 1. For example, when a large amount of urine or the like is excreted, the auxiliary absorber 1 quickly absorbs urine or the like accumulated on the top sheet 12 and prevents side leakage from the rising flap 16.

  Hereinafter, the present invention will be described in more detail with reference to examples, but the scope of the present invention is not limited thereto.

(1) Experimental method Using a hydrophilic spunbond nonwoven fabric having a basis weight of 10 g / m ² , a bag having a size of 100 mm in length and 50 mm in width was produced. A predetermined amount of a water-absorbing material was put in a bag and sealed to prepare a test pad (auxiliary absorber) so that the entire thickness was substantially uniform. Fabrication and sealing of the nonwoven fabric bag was performed by heat sealing the nonwoven fabrics. A test pad was placed in a 1.0% saline solution for a length of 15 mm so that the vertical direction was the vertical direction, and immersed for 30 seconds. After immersion for 30 seconds, the height at which the test pad absorbed saline was measured. The test was performed 3 times, and the average value was shown as a result.

  Table 1 shows the water-absorbing material and the amount thereof contained in the non-woven bag. The case where only cellulose fibers were used as the water-absorbing material (pad Nos. 1 to 3) and the case where a mixture of cellulose fibers and water-absorbing resin was used (pads No. 4 to 6) were examined. Cellulose fibers used as the water-absorbing material are pulp fibers, and the water-absorbing resin is sodium polyacrylate. In Table 1, pad No. 1 to 3 “weight of water-absorbing material” corresponds to the weight of the fiber aggregate layer.

(2) Experimental results Table 1 shows the experimental results. Pad No. using only cellulose fiber as the water absorbing material. 1 to 3 and a pad No. using a mixture of cellulose fiber and water absorbent resin as a water absorbent material. In each of 4 to 6, the water absorption height increased as the basis weight of the water-absorbent material increased. However, pad no. 1 to 3 have the same basis weight pad No. The water absorption height became higher than 4-6. That is, pad No. using only cellulose fiber as the water-absorbing material. 1-3 were able to realize quick water absorption.

1: Auxiliary absorbent body 2: Fiber assembly layer 3: Cover sheet 4: Fixing means 6: Water absorbent resin layer

Claims (3)

An auxiliary absorber that is mounted inside the rising flap of the absorbent article;
A fiber assembly layer containing cellulose fibers and no water absorbent resin;
One or more coated sheets that wrap around the fiber assembly layer;
Fixing means attached to the outer surface of the covering sheet;
The fiber assembly layer has a column shape, the length in the longitudinal direction of the column shape is 50 mm or more and 800 mm or less, the maximum length of the cross section is 10 mm or more and 70 mm or less, and the length in the longitudinal direction is the maximum of the cross section. An auxiliary absorbent, which is at least twice the length and has a basis weight of 400 g / m ² or more and 1000 g / m ² or less. The auxiliary absorber according to claim 1, further comprising a water absorbent resin layer that contains a water absorbent resin and does not contain cellulose fibers on the fixing means side of the fiber assembly layer. An absorbent article having a top sheet, a back sheet, an absorbent core provided therebetween, and rising flaps provided on both sides in the width direction of the top sheet,
An absorbent article, wherein the auxiliary absorbent body according to claim 1 or 2 is accommodated and attached inside the rising flap.

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