JP2014188105A - Absorbent pad and disposable diaper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an absorbent pad having excellent leakage prevention property and providing excellent equipping feeling.SOLUTION: An absorbent pad 100 comprises an absorption main body 14 in which a top sheet 18 and a back sheet are laminated in a state where an absorber 22 is interposed therebetween and a pair of three-dimensional gathers 26a arranged along with each of side edges 22a, 22b of the absorber 22 on the absorption main body 14. Each of the pair of three-dimensional gathers 26a comprises leakage preventing wall parts 27a standing form a standing line L of the three-dimensional gathers 26a and a three-dimensional gather stretch material 28 arranged on a tip end part of the leakage preventing wall parts 27a. Each of the leakage preventing wall parts 27a of the pair of three-dimensional gathers 26a comprises a projecting part 29a on an outside wall surface 82 opposite to wall surface which faces each other with an interposed absorber 22, in which a part from root 83 to tip 84 of the outside wall surface 82 projecting to outside relative to the direction along which the three-dimensional gathers 26a stand.

Description

  The present invention relates to an absorbent pad and a disposable diaper.

  Absorbent articles include disposable diapers that absorb excretory fluids such as urine (for example, tape-type diapers, pants-type diapers, urine pads, etc.), sanitary napkins that absorb menstrual blood, and sheets of cage that absorb cages. It is used in.

  In recent years, in order to reduce labor when changing diapers, a disposable diaper and an absorbent pad (also referred to as “inner pad”, “urine pad”, etc.) are used in combination. For example, the disposable diaper is not directly applied to the wearer's skin, but an absorbent pad is laminated on the top sheet side surface of the disposable diaper, and the disposable diaper on which the absorbent pad is laminated is applied to the wearer's skin. . By doing so, even when the wearer excretes, it is sufficient to replace only the absorbent pad, and the disposable diaper can be used as it is. Therefore, compared with the method of exchanging the entire disposable diaper for every excretion, the exchange is easier and the caregiver's care effort is reduced. Moreover, since an absorption pad is cheaper than a disposable diaper, compared with the case where the whole disposable diaper is replaced | exchanged for every excretion, it is advantageous also in cost. Such an absorbent pad is used in various absorbent articles other than disposable diapers.

  By the way, since an absorption pad is used in the state mounted in the inner surface of a disposable diaper, if an absorption pad slip | deviates from a disposable diaper, it will become a cause of urine leakage. Therefore, conventionally, the absorbent pad is sometimes fixed so as to be sandwiched between a pair of three-dimensional gathers of disposable diapers. In addition, in order to prevent urine leakage from the absorbent pad, a solid gather may be provided along each side edge of the absorbent body in the absorbent pad. As conventional techniques related to such a three-dimensional gather, for example, the following Patent Documents 1 and 2 can be cited.

  Patent Document 1 describes a disposable diaper in which a T-shaped three-dimensional gather having a protruding portion that protrudes on both sides from a base wall portion is provided outside the side edge of the absorbent body. This disposable diaper is intended to prevent leakage of excrement by bringing the upper surface of a T-shaped solid gather into contact with the thigh of the wearer.

  Further, in Patent Document 2, a sheet material forming a three-dimensional gather has a gathering start point that is folded outward along the longitudinal direction of the gather, and forms a pocket with an opening facing inward in a cross-sectional shape. However, a three-dimensional gather standing on the surface side is described.

Japanese Patent No. 3888646 Japanese Patent No. 4187180

  As described above, when a three-dimensional gather is provided in each of the absorbent pad and the disposable diaper, when the absorbent pad is placed on the inner surface of the disposable diaper, the three-dimensional gather is disposed on one side in a double manner. . By being configured in this way, even when urine leaks beyond the three-dimensional gather of the absorbent pad, the urine can be blocked by the three-dimensional gather on the disposable diaper side. At this time, the higher the height of the three-dimensional gather of the absorbent pad, the higher the urine blocking effect. However, if the height of the three-dimensional gather of the absorbent pad is made higher than the three-dimensional gather of the disposable diaper, when the three-dimensional gather of the disposable diaper and the three-dimensional gather of the absorbent pad are arranged to overlap, The urine leaking from the three-dimensional gathers flows out of the three-dimensional gathers of the disposable diaper as it is. That is, the advantage of arranging the three-dimensional gathers twice is lost. Moreover, when the three-dimensional gather of a disposable diaper and the three-dimensional gather of an absorption pad overlap, when the waist | gap comes out to the raw material of a three-dimensional gather and it contacts with a wearer's skin, rough skin may arise. For this reason, it has been conventionally considered that it is difficult to make the height of the three-dimensional gather of the absorbent pad higher than the height of the three-dimensional gather of the disposable diaper.

  For example, even when the three-dimensional gather described in Patent Document 1 is used as a three-dimensional gather for the absorbent pad, the height of the three-dimensional gather of the absorbent pad is set higher than the height of the three-dimensional gather of the disposable diaper. The overlap between the three-dimensional gather and the three-dimensional gather of the absorbent pad cannot be prevented. In other words, it is not possible to fully enjoy the benefits of arranging three-dimensional gathers in a double manner.

  In addition, when the three-dimensional gather described in Patent Document 2 is used as the three-dimensional gather of the absorbent pad, in order to increase the height of the three-dimensional gather of the absorbent pad, there is a great deal of material for the width direction of the absorbent pad. As a result, the manufacturing cost of the absorbent pad increases. In particular, the absorption pad is required to be inexpensive so that it can be replaced every time it is excreted.

  The present invention has been made in view of the problems of the prior art as described above. That is, the present invention provides an absorbent pad that is difficult to overlap with the three-dimensional gathers of absorbent articles such as disposable diapers even if the height of the three-dimensional gathers of the absorbent pad is increased, A disposable diaper with an absorbent pad is provided.

  According to the present invention, the following absorbent pad and disposable diaper are provided.

[1] An absorbent main body in which a plurality of sheets are stacked with an absorbent body sandwiched therebetween, and a pair of three-dimensional gathers arranged along each side edge of the absorbent body of the absorbent main body, Each of the three-dimensional gathers has a leak-proof wall portion that rises from an upright line of the three-dimensional gather, and a three-dimensional gather stretchable material disposed at the tip of the leak-proof wall portion, and a pair of the three-dimensional gathers Each of the leak-proof wall portions is formed on the outer wall surface opposite to the wall surfaces facing each other across the absorber, and a part from the root to the tip of the outer wall surface is in a direction in which the three-dimensional gather stands. An absorbent pad having a protruding portion protruding outward.

[2] The absorbent pad according to [1], wherein the protruding portion has a protruding length of 2 to 20 mm from a protruding end of the protruding portion to the surface of the outer wall surface.

[3] The absorbent pad according to [1] or [2], wherein the protrusion has a length in a direction from the base side to the tip side of the outer wall surface of 5 to 100 mm.

[4] The protrusion is present at least in a part of a range of 1 to 90% from the root of the outer wall surface when the length from the root to the tip of the outer wall surface is 100%. The absorbent pad according to any one of 1] to [3].

[5] The absorbent pad according to any one of [1] to [4], wherein the protrusion is hydrophilic or water-repellent.

[6] The absorbent pad according to any one of [1] to [5], further including a detachable adhesive portion on the back side of the absorbent main body.

[7] The absorbent pad according to any one of [1] to [6], a mounting area for mounting the absorbent pad, and a pair of second parts arranged along each side edge of the mounting area A diaper main body having a three-dimensional gather, and in a state where the absorption pad is mounted on the mounting region, at least a part of the protrusions of the pair of three-dimensional gather is a tip of the pair of the second three-dimensional gather The disposable diaper which exists in the position lower than the front-end | tip of a position of the same height or a pair of said 2nd three-dimensional gathers.

[8] In a state where the absorption pad is mounted in the mounting area, the tip of the pair of three-dimensional gathers of the absorption pad is at the same height as the pair of tips of the second three-dimensional gather or the pair of the three-dimensional gathers. The disposable diaper according to [7], wherein the disposable diaper exists at a position higher than a tip of the second three-dimensional gather.

[9] The absorbent pad according to any one of [1] to [6], a mounting area for mounting the absorbent pad, and a pair of second parts arranged along each side edge of the mounting area A diaper body having a three-dimensional gather, and in a state where the absorption pad is mounted in the mounting region, the pair of three-dimensional gather tips of the absorption pad is more than the pair of second solid gather tips. Disposable diaper that exists at a high position.

[10] The diaper main body includes a second absorbent main body in which a plurality of sheets are stacked in a state of sandwiching the second absorbent body, and the attachment region is formed in the second absorbent main body, The disposable diaper according to any one of [7] to [9].

  Each of the leak-proof wall portions of the pair of three-dimensional gathers in the absorbent pad of the present invention is formed on the outer wall surface opposite to the wall surface facing each other across the absorber, and a part from the root to the tip of the outer wall surface is three-dimensional. It has the protrusion part which protrudes toward an outer direction with respect to the direction where a gather stands. By having such a protruding portion, even if the height of the three-dimensional gathers of the absorbent pad is increased, it is difficult to overlap with the three-dimensional gathers of absorbent articles such as disposable diapers, resulting in excellent leakage prevention and wearing feeling. . Therefore, when the absorbent pad of the present invention is placed and used inside the disposable diaper, it is possible to sufficiently enjoy the benefit of having three-dimensional gathers disposed on both sides of the absorbent body. Moreover, since the material used as a leak-proof wall part does not increase excessively, the absorption pad of this invention can suppress the increase in the manufacturing cost of an absorption pad.

  Moreover, the disposable diaper of this invention was equipped with the diaper main body which has a pair of 2nd three-dimensional gathers arrange | positioned along the mounting region for mounting | wearing with the absorption pad mentioned above, and this mounting region. Therefore, the three-dimensional gathers of the absorbent pad and the second three-dimensional gathers of the diaper main body are not easily overlapped, and the leakproofness and wearing feeling are excellent.

It is a top view which shows typically Embodiment 1 of the absorption pad of this invention. It is sectional drawing which shows typically the A-A 'cross section of the absorption pad shown in FIG. It is a perspective view which shows typically the solid gathers of the absorption pad shown in FIG. It is a perspective view which shows typically the solid gathers in Embodiment 2 of the absorption pad of this invention. It is a perspective view which shows typically an example of the solid gathers in Embodiment 3 of the absorption pad of this invention. It is a perspective view which shows typically the other example of the solid gathers in Embodiment 4 of the absorption pad of this invention. It is a perspective view which shows typically the solid gathers in Embodiment 5 of the absorption pad of this invention. It is a perspective view which shows typically the solid gathers in Embodiment 6 of the absorption pad of this invention. It is a perspective view which shows typically an example of the solid gathers in Embodiment 7 of the absorption pad of this invention. It is a perspective view which shows typically the other example of the solid gathers in Embodiment 8 of the absorption pad of this invention. It is a top view showing typically an embodiment of a disposable diaper of the present invention. It is sectional drawing which shows typically the C-C 'cross section of the disposable diaper shown in FIG.

  Hereinafter, the form for implementing the absorption pad of this invention and a disposable diaper is demonstrated concretely.

[Embodiment 1]
Hereinafter, Embodiment 1 of the absorption pad of this invention is demonstrated using drawing. As shown in FIGS. 1, 2, and 3, the absorbent pad 100 according to the first embodiment has an absorptive structure in which a plurality of sheets (for example, a top sheet 18 and a back sheet 20) are stacked with an absorbent body 22 interposed therebetween. The main body 14 and a pair of three-dimensional gathers 26a and 26a arranged along the side edges 22a and 22b of the absorbent body 22 of the absorbent main body 14 are provided. Each of the pair of three-dimensional gathers 26a includes a leak-proof wall portion 27a that rises from an upright line L of the three-dimensional gather 26a, and a three-dimensional gather stretchable material 28 that is disposed at the tip of the leak-proof wall portion 27a. Further, each of the leakage preventing wall portions 27a of the pair of three-dimensional gathers 26a has a part from the root 83 to the tip 84 of the outer wall surface 82 projecting outward in the direction P in which the three-dimensional gather 26a stands. It has a protrusion 29a. The outer wall surface 82 of the leak-proof wall portion 27a is a wall surface (outer wall surface 82) opposite to the wall surface 81 in which each of the pair of three-dimensional gathers 26a faces each other across the absorber 22.

  The absorption pad 100 of Embodiment 1 has such a protrusion 29a, so even if the height of the three-dimensional gather 26a of the absorption pad 100 is increased, it is difficult to overlap with the three-dimensional gather of absorbent articles such as disposable diapers, It is excellent in leakage prevention and wearing feeling. Therefore, when the absorbent pad 100 of Embodiment 1 is placed and used inside the disposable diaper, the three-dimensional gathers (that is, the three-dimensional gather 26a of the absorbent pad 100 and the disposable diaper are respectively disposed on both sides of the absorbent body 22. It is possible to fully enjoy the benefit of having a three-dimensional gather). Moreover, since the material used as the leak-proof wall part 27a does not increase excessively, the absorption pad 100 of Embodiment 1 can suppress the increase in the manufacturing cost of the absorption pad 100.

  Here, FIG. 1 is a plan view schematically showing Embodiment 1 of the absorbent pad of the present invention. 2 is a cross-sectional view schematically showing an A-A ′ cross section of the absorption pad shown in FIG. 1. 3 is a perspective view schematically showing a three-dimensional gather of the absorbent pad shown in FIG. FIG. 3 shows a state in which the three-dimensional gathering of the absorbent pad shown in FIG. 2 is viewed in the direction indicated by the arrow B in FIG.

  In the present invention, “the direction P in which the three-dimensional gather 26a stands” is a direction from the root 83 side to the tip end 84 side of the leak-proof wall portion 27a and a direction along the outer wall surface 82 of the leak-proof wall portion 27a. That's it. In addition, the protruding portion 29a has an outer direction of the absorbent pad 100 with respect to the “direction P where the three-dimensional gather 26a stands” (for example, among the directions intersecting the “direction P” in the cross section shown in FIG. It is provided so as to protrude toward the outside of the absorbent pad 100. Thus, since the direction P where the three-dimensional gather 26a stands and the direction in which the protruding portion 29a protrudes do not match, when the three-dimensional gather of the disposable diaper is covered from the outside, the protruding portion 29a causes the three-dimensional gather to Overlap can be effectively prevented.

(1-1. Solid gathers)
The three-dimensional gather 26a is a member that functions as a leak-proof wall for preventing the urine excreted by the wearer from leaking out of the diaper. The three-dimensional gather 26a may be formed of a side sheet different from the top sheet 18 and the back sheet 20. For example, one end side of the side sheet is fixed to the surface of the top sheet 18, and the three-dimensional gather stretchable material 28 is disposed in an extended state on the other end side. Thereby, the three-dimensional gather 26a stands up by the contraction force of the three-dimensional gather stretchable material 28, and can effectively prevent a side leak in which liquid such as urine leaks from the opening around the leg of the diaper. A wall surface formed by the side sheet described above serves as a leak-proof wall portion 27a.

  The protrusion 29a is not particularly limited in its configuration as long as a part from the base 83 to the tip 84 of the outer wall surface 82 protrudes outward with respect to the direction P where the three-dimensional gather 26a stands. Absent. The protrusion 29a may be formed by disposing a member for forming the protrusion 29a on the outer wall surface 82 of the leak-proof wall 27a. Moreover, the protrusion part 29a may protrude the outer wall surface 82 of the leak-proof wall part 27a toward the outer side by various processing processes. In FIG. 1 to FIG. 3, the protruding portion 29 a is formed by sticking the uneven surface processed sheet 29 aa to the outer wall surface 82. Examples of the uneven processing include embossing, but the uneven processing is not limited to the above-described embossing.

  The protruding length of the protruding portion 29a from the protruding end of the protruding portion 29a to the surface of the outer wall surface 82 is preferably 2 to 20 mm, and more preferably 5 to 10 mm. Hereinafter, “the protruding length of the protruding portion 29a from the protruding end of the protruding portion 29a to the surface of the outer wall surface 82” may be simply referred to as “the protruding length of the protruding portion 29a”. By setting the protruding length of the protruding portion 29a to 2 to 20 mm, when the absorbent pad 100 is placed and used inside the disposable diaper, the protruding portion 29a serves as a support, and the three-dimensional gather 26a of the absorbent pad 100 and the disposable pad Overlap with the diaper's three-dimensional gather can be effectively prevented. When the protruding length of the protruding portion 29a is less than 2 mm, there may be a case where the interval between the two three-dimensional gathers cannot be sufficiently secured in a state where the three-dimensional gather of the disposable diaper is supported by the protruding portion 29a. If the protruding length of the protruding portion 29a becomes too long, the protruding portion 29a may hang down and adhere to the lower part of the three-dimensional gather. In particular, when the protruding portion 29a is wet, it may be likely to hang down due to its own weight. If the protruding portion 29a adheres to the lower part of the three-dimensional gather as described above, the standing state of the three-dimensional gather may deteriorate or the three-dimensional gather may fall inward. Further, if the protruding length of the protruding portion 29a is too long, the protruding portion 29a may be easily broken. Furthermore, when other members constituting the diaper come into contact with the protruding portion 29a and a force is applied to the distal end side of the protruding portion 29a, the direction of the three-dimensional gather may be easily affected.

  The length of the protruding portion 29a in the direction from the base 83 side to the tip end 84 side of the outer wall surface 82 is preferably 5 to 100 mm, and more preferably 10 to 50 mm. Hereinafter, the “length of the protruding portion 29a in the direction from the base 83 side to the distal end 84 side of the outer wall surface 82” may be simply referred to as “the length of the protruding portion 29a”. By setting the length of the protrusion 29a to 5 to 100 mm, the protrusion 29a functions well as a support for the three-dimensional gather of the disposable diaper when the absorbent pad 100 is placed inside the disposable diaper. . For example, if the length of the protrusion 29a is too short (less than 5 mm), it may be difficult to support the three-dimensional gathered disposable diaper by the protrusion 29a. Moreover, if the length of the protrusion part 29a is less than 100 mm, it will have the sufficient function as a support mentioned above. However, an excessively long protrusion 29a is not preferable from the viewpoint of manufacturing cost.

  The protrusion 29a is present at least in a part of the range of 1 to 90% from the root of the outer wall surface 82 when the length from the base to the tip of the outer wall surface 82 (the length of the protrusion 29a) is 100%. It is preferable to do. For example, in order to improve the leak-proof property of the three-dimensional gather 26a of the absorbent pad 100, it is effective to increase the height from the standing line L. However, the protruding portion 29a is 90% from the root of the outer wall surface 82. In the case where the protrusion 29a exists only in the range exceeding the upper limit, the protruding portion 29a may be provided at a height that does not contact the three-dimensional gather of the disposable diaper. That is, in the absorbent pad 100 in the present embodiment, the protruding portion 29a is a three-dimensional gather of the disposable diaper in a state where the absorbent pad 100 is placed inside the disposable diaper and in a state where the wearer wears the disposable diaper. It is preferable to be provided at a height that allows contact with the outer wall surface.

  The protrusion 29a is preferably hydrophilic or water repellent. In the absorbent pad 100 of the first embodiment, the protrusion 29a is provided by sticking the sheet 29aa that has been processed to be uneven to the outer wall surface 82. Therefore, the sheet 29aa may be a hydrophilic sheet or a water-repellent sheet. When the protrusion 29a is hydrophilic, when the urine leaks over the three-dimensional gather 26a of the absorbent pad 100, the leaked urine can be temporarily stored by the protrusion 29a. On the other hand, when the protrusion 29a is water-repellent, when urine leaks over the three-dimensional gather 26a of the absorbent pad 100, the leaked urine travels along the outer wall surface 82 of the three-dimensional gather 26a and It immediately flows down between the three-dimensional gather 26a and the three-dimensional gather of the disposable diaper. Therefore, even if the height of the three-dimensional gather 26a is increased, the leaked urine becomes difficult to contact the wearer.

  In addition, when the concavo-convex processed sheet 29aa is attached to the outer wall surface 82, the sheet 29aa may be attached to the outer wall surface 82 intermittently or continuously. In addition, when affixing sheet | seat 29aa intermittently, you may affix in the direction which goes to the other end from the one end of the absorption pad 100, or the height direction from the standing line L of the three-dimensional gather 26a. , May be affixed intermittently. By affixing intermittently, the amount of the sheet 29aa to be used can be reduced. In addition, the urine that passes through the intermittent portion and over the three-dimensional gather 26a easily flows down. On the other hand, the number of steps for attaching the sheet 29aa can be reduced by continuously attaching the sheets. Moreover, when the protrusion part 29a is hydrophilic, it becomes easy to temporarily store the urine which got over the solid gather 26a.

  The three-dimensional gather 26a is disposed along the side edges 22a and 22b of the absorber 22. Here, “along each side edge of the absorber” means that it is attached in substantially the same direction as the side edge of the absorber. However, the side edge of the absorbent body may not be the same or similar to the outer edge shape of the absorbent pad 100, and may be formed, for example, in a curved manner along the leg opening of the disposable diaper. Therefore, it is not always necessary to be attached so as to be in contact with the side edge of the absorber, and further, it is not necessary to be attached so as to draw the same locus as the side edge of the absorber. Usually, a three-dimensional gather is often arranged linearly regardless of the shape of the absorber. That is, the three-dimensional gather 26a may be any one that is disposed on the side edges 22a and 22b side of the absorber 22 and serves as a leak-proof wall that can stand up three-dimensionally.

  The three-dimensional gather 26 a is preferably formed on both side edges 22 a and 22 b of the absorbent body 22 and in the entire length direction extending from one end to the other end of the absorbent pad 100.

  As the sheet material constituting the three-dimensional gather 26a (leakproof wall portion 27a), it is preferable to use a water-repellent material from the viewpoint of improving the leak-proof property of the three-dimensional gather 26a. Non-woven fabrics such as spunbond and card embossing may be used as the water-repellent material, but SMS (spunbond / meltblown / spunbond), SMMS (spunbond / meltblown / meltblown / spun) because of high water pressure resistance. It is preferable to use a non-woven fabric such as a bond.

  The three-dimensional gather 26a is formed by sandwiching and fixing an elastic material (three-dimensional gather elastic material 28) between the layers of the water-repellent sheet and forming a gather (leakproof wall portion 27a) by the contraction force of the three-dimensional gather elastic material 28. It can be used suitably. The three-dimensional gather stretchable material 28 can be fixed by being sandwiched between folded portions of a water-repellent sheet, for example.

(1-2. Absorbent body)
The absorbent main body 14 is formed by laminating a plurality of sheets with the absorbent body 22 sandwiched therebetween. The absorbent pad 100 of Embodiment 1 includes an absorbent main body 14 in which a top sheet 18 and a back sheet 20 are stacked with an absorbent body 22 sandwiched therebetween. That is, the absorbent body 22 is covered with a liquid-permeable top sheet 18 from the surface (skin contact surface) side that contacts the skin of the wearer, and the liquid-impermeable back from the opposite skin non-contact surface side. Covered by the sheet 20. Therefore, liquid such as urine passes through the top sheet 18 and is absorbed and held by the absorber 22, and leakage to the outside is prevented by the liquid-permeable back sheet 20.

(1-3. Absorber)
The absorber 22 is a member for absorbing and holding the wearer's urine. The absorber 22 is composed of an absorbent material in order to absorb and hold the wearer's urine and body fluid. As the absorbent material, for example, fluff pulp, super absorbent polymer (“SAP”), a hydrophilic sheet or the like can be used. An example of fluff pulp is a defibrated wood pulp or non-wood pulp. An example of a superabsorbent polymer is sodium polyacrylate. As the hydrophilic sheet, for example, tissue, absorbent paper, or a nonwoven fabric subjected to a hydrophilic treatment can be used.

  The absorber 22 is sandwiched between the top sheet 18 and the back sheet 20 by being sandwiched between the top sheet 18 and the back sheet 20 and sealing the peripheral edges of both sheets. The shape of the absorber 22 is not limited to the illustrated shape, and may be, for example, a rectangular shape, a gourd shape, or a T shape. In the absorbent pad 100 shown in FIGS. 1 to 3, a rectangular absorbent body is employed as the absorbent body 22.

(1-4. Top sheet)
The top sheet 18 is a liquid-permeable sheet disposed so as to cover the skin contact surface side of the absorber 22. The top sheet 18 allows a liquid such as urine to permeate the absorber 22 arranged on the lower surface side thereof.

  As the liquid permeable material constituting the top sheet 18, for example, a woven fabric, a non-woven fabric, or a porous fill can be adopted. In particular, it is preferable to use a non-woven fabric made of a thermoplastic resin such as polypropylene, polyethylene, polyester, or nylon and subjected to a hydrophilic treatment.

  The top sheet 18 may be composed of a single sheet material, but may be composed of a plurality of sheet materials. For example, the structure which combined the sheet | seat arrange | positioned at the surface part of an absorber and the sheet | seat arrange | positioned at the part of a side flap may be sufficient.

(1-5. Back sheet)
The back sheet 20 is a liquid-impermeable sheet disposed so as to cover the absorber 22 from the non-skin contact surface side. The backsheet 20 prevents the liquid held by the absorber 22 from leaking out of the absorbent pad 100.

  As the liquid-impermeable material constituting the backsheet 20, for example, a liquid-impermeable film made of a resin such as polyethylene can be employed. A microporous polyethylene film may be used.

  Moreover, although illustration is abbreviate | omitted, you may further provide the attachment part which can be attached or detached on the back surface side (namely, back surface side of a back seat | sheet) of an absorptive main body. When the absorbent pad is placed on an absorbent article such as a disposable diaper, the absorbent pad may be fixed at a predetermined position by such an adhesive portion. Examples of the adhesive part include an adhesive tape, a mechanical fastener, and a hot melt. The size and position of the adhesive part are not particularly limited as long as the absorbent pad can be fixed to the inner surface of a disposable diaper or the like and a binding force sufficient to prevent the absorbent pad from being displaced can be obtained. There is no.

[Embodiment 2]
Hereinafter, Embodiment 2 of the absorption pad of this invention is demonstrated, referring FIG. FIG. 4 is a perspective view schematically showing a three-dimensional gather in Embodiment 2 of the absorbent pad of the present invention. In addition, since the absorptive main body in the absorption pad 200 of Embodiment 2 is comprised similarly to the absorptive main body 14 of the absorption pad 100 of Embodiment 1 shown in FIG. 1, description is abbreviate | omitted. Moreover, it is preferable that the three-dimensional gather 26b in the absorption pad 200 of Embodiment 2 is comprised similarly to the three-dimensional gather 26a of the absorption pad 100 of Embodiment 1 shown in FIG. 1 about the structure except having demonstrated below. .

  The absorbent pad 200 of Embodiment 2 includes a pair of three-dimensional gathers 26b arranged along each side edge of an absorbent body (not shown) of an absorbent main body (not shown). As shown in FIG. 4, the three-dimensional gather 26 b includes a leak-proof wall portion 27 b that rises from a standing line of the three-dimensional gather 26 b, and a three-dimensional gather stretchable material 28 that is disposed at the tip of the leak-proof wall portion 27 b. And the leak-proof wall part 27b of the three-dimensional gather 26b has a part from the base 83 of the said outer side wall 82 to the front-end | tip 84 on the outer side wall 82 on the opposite side to the wall surface which mutually faces on both sides of an absorber. And a protruding portion 29b that protrudes outward with respect to the standing direction.

  In the absorbent pad 200 of the second embodiment, the protruding portion 29b is formed by sticking the pleated sheet 29bb to the outer wall surface 82. In the absorbent pad 200 of the second embodiment, four ridge-like protrusions 29b are formed in a horizontal stripe shape in the direction from the root 83 to the tip 84 of the outer wall surface 82 by pleating. The “projection length of the projection 29b”, “length of the projection 29b”, “position of the projection 29b”, and the like are the same as those of the three-dimensional gather 26a of the absorbent pad 100 of Embodiment 1 shown in FIG. It is preferable to be configured.

  The protrusion 29b is preferably hydrophilic or water repellent. That is, the pleated sheet 29bb may be a hydrophilic sheet or a water-repellent sheet. Further, when the pleated sheet 29bb is attached to the outer wall surface 82, the sheet 29bb may be attached to the outer wall surface 82 intermittently or continuously. By adopting the various configurations described above, it is possible to obtain the same functions and effects as those of the absorption pad of the first embodiment.

[Embodiment 3]
Hereinafter, Embodiment 3 of the absorption pad of this invention is demonstrated, referring FIG. FIG. 5 is a perspective view schematically showing a three-dimensional gather in Embodiment 3 of the absorbent pad of the present invention. In addition, since the absorptive main body in the absorption pad 300 of Embodiment 3 is comprised similarly to the absorptive main body 14 of the absorption pad 100 of Embodiment 1 shown in FIG. 1, description is abbreviate | omitted. Moreover, it is preferable that the solid gather 26c in the absorption pad 300 of Embodiment 3 is comprised similarly to the solid gather 26a of the absorption pad 100 of Embodiment 1 shown in FIG. 1 about the structure except having demonstrated below. .

  The absorbent pad 300 according to the third embodiment includes a pair of three-dimensional gathers 26c arranged along each side edge of an absorbent body (not shown) of an absorbent main body (not shown). As shown in FIG. 5, the three-dimensional gather 26 c includes a leak-proof wall portion 27 c that rises from a standing line of the three-dimensional gather 26 c, and a three-dimensional gather stretchable material 28 disposed at the tip of the leak-proof wall portion 27 c. The leak preventive wall portion 27c of the three-dimensional gather 26c is formed on the outer wall surface 82 opposite to the wall surfaces facing each other with the absorbent body interposed therebetween, and a part from the root 83 to the tip 84 of the outer wall surface 82 is formed on the three-dimensional gather 26c. And a protruding portion 29c that protrudes outward with respect to the standing direction.

  In the absorbent pad 300 of the third embodiment, the protruding portion 29 c is formed by sticking a pleated sheet 29 cc to the outer wall surface 82. However, in the absorbent pad 300 of Embodiment 3, a plurality of hook-shaped protrusions 29c are formed in vertical stripes in the direction from one end of the absorbent pad 300 to the other end by pleating. That is, the hook-shaped protrusion 29c formed by pleating is formed along the direction in which the three-dimensional gather 26c stands. The “projection length of the protrusion 29c”, “length of the protrusion 29c”, “position of the protrusion 29c”, and the like are the same as those of the three-dimensional gather 26a of the absorbent pad 100 of Embodiment 1 shown in FIG. It is preferable to be configured.

  The protruding portion 29c is preferably hydrophilic or water repellent. That is, the pleated sheet 29cc may be a hydrophilic sheet or a water-repellent sheet. In addition, when the pleated sheet 29cc is attached to the outer wall surface 82, it may be applied intermittently or may be attached continuously to the outer wall surface 82. By adopting the various configurations described above, it is possible to obtain the same functions and effects as those of the absorption pad of the first embodiment.

[Embodiment 4]
Hereinafter, Embodiment 4 of the absorption pad of this invention is demonstrated, referring FIG. FIG. 6 is a perspective view schematically showing a three-dimensional gather in Embodiment 4 of the absorbent pad of the present invention. In addition, since the absorptive main body in the absorption pad 400 of Embodiment 4 is comprised similarly to the absorptive main body 14 of the absorption pad 100 of Embodiment 1 shown in FIG. 1, description is abbreviate | omitted. The three-dimensional gather 26d in the absorbent pad 400 of the fourth embodiment is preferably configured in the same manner as the three-dimensional gather 26a of the absorbent pad 100 of the first embodiment shown in FIG. .

  The absorbent pad 400 of the fourth embodiment includes a pair of three-dimensional gathers 26d arranged along each side edge of an absorbent body (not shown) of an absorbent main body (not shown). As shown in FIG. 6, the three-dimensional gather 26 d includes a leak-proof wall portion 27 d that rises from a standing line of the three-dimensional gather 26 d, and a three-dimensional gather stretchable material 28 that is disposed at the tip of the leak-proof wall portion 27 d. The leak preventive wall portion 27d of the three-dimensional gather 26d has a part from the base 83 to the tip 84 of the outer wall surface 82 on the outer wall surface 82 opposite to the wall surfaces facing each other across the absorber. It has the protrusion part 29d which protrudes toward an outer side direction with respect to the standing direction.

  In the absorbent pad 400 of the fourth embodiment, the protruding portion 29d is formed by sticking a columnar absorbent material 29dd to the outer wall surface 82. Examples of the absorbent material 29dd include urethane foam. In the absorbent pad 400 of the fourth embodiment, the protruding portion 29d is formed by pasting the absorbent material 29dd “continuously” in the direction from one end to the other end of the absorbent pad 400. With this configuration, when the urine leaks over the three-dimensional gather 26d of the absorption pad 400, the leaked urine can be absorbed by the protrusion 29d. When urethane foam or the like is used as the absorbent material 29dd, it is preferable to use a material having a high porosity. When the porosity is high, more leaked urine can be absorbed.

[Embodiment 5]
Hereinafter, Embodiment 5 of the absorption pad of this invention is demonstrated, referring FIG. FIG. 7: is a perspective view which shows typically the solid gathers in Embodiment 5 of the absorption pad of this invention. In addition, since the absorptive main body in the absorption pad 500 of Embodiment 5 is comprised similarly to the absorptive main body 14 of the absorption pad 100 of Embodiment 1 shown in FIG. 1, description is abbreviate | omitted. Further, the three-dimensional gather 26e in the absorbent pad 500 of the fifth embodiment is preferably configured in the same manner as the three-dimensional gather 26a of the absorbent pad 100 of the first embodiment shown in FIG. 1 except for the configuration described below. .

  The absorbent pad 500 according to the fifth embodiment includes a pair of three-dimensional gathers 26e arranged along each side edge of an absorbent body (not shown) of an absorbent main body (not shown). As shown in FIG. 7, the three-dimensional gather 26 e includes a leak-proof wall portion 27 e that rises from a standing line of the three-dimensional gather 26 e, and a three-dimensional gather stretchable material 28 that is disposed at the tip of the leak-proof wall portion 27 e. And the leak-proof wall part 27e of the three-dimensional gather 26e has a part from the base 83 of the said outer wall surface 82 to the front-end | tip 84 on the outer wall surface 82 on the opposite side to the wall surface which mutually opposes on both sides of an absorber. The protrusion 29e protrudes outward with respect to the standing direction.

  In the absorbent pad 500 of the fifth embodiment, the protruding portion 29e is formed by sticking a columnar absorbent material 29ee to the outer wall surface 82. Examples of the absorbent material 29ee include urethane foam. In the absorbent pad 500 of the fifth embodiment, the protruding portion 29e is formed by pasting the absorbent material 29ee “intermittently” in a direction from one end to the other end of the absorbent pad 500. With this configuration, when the urine leaks over the three-dimensional gather 26e of the absorption pad 500, a part of the leaked urine is absorbed by the protrusion 29e, and the remaining urine becomes the protrusion 29e. It flows through the gap between the three-dimensional gathers 26e of the absorbent pad 500 and the three-dimensional gathers of the disposable diaper. For this reason, for example, when a small amount of urine gets over the three-dimensional gather 26e, the urine is absorbed by the protruding portion 29e. For example, when a large amount of urine gets over the three-dimensional gather 26e, it cannot be absorbed by the protruding portion 29e. Urine flows down quickly and can be absorbed as appropriate by the absorbent body of the disposable diaper. When urethane foam or the like is used as the absorbent material 29ee, it is preferable to use a material having a high porosity. When the porosity is high, more leaked urine can be absorbed.

[Embodiment 6]
Hereinafter, Embodiment 6 of the absorption pad of this invention is demonstrated, referring FIG. FIG. 8: is a perspective view which shows typically the solid gathers in Embodiment 6 of the absorption pad of this invention. In addition, since the absorptive main body in the absorption pad 600 of Embodiment 6 is comprised similarly to the absorptive main body 14 of the absorption pad 100 of Embodiment 1 shown in FIG. 1, description is abbreviate | omitted. Further, the three-dimensional gather 26f in the absorbent pad 600 of the sixth embodiment is preferably configured in the same manner as the three-dimensional gather 26a of the absorbent pad 100 of the first embodiment shown in FIG. 1 except for the configuration described below. .

  The absorbent pad 600 according to the sixth embodiment includes a pair of three-dimensional gathers 26f arranged along each side edge of an absorbent body (not shown) of an absorbent main body (not shown). As shown in FIG. 8, the three-dimensional gather 26f includes a leak-proof wall portion 27f that rises from a standing line of the three-dimensional gather 26f, and a three-dimensional gather stretchable material 28 that is disposed at the tip of the leak-proof wall portion 27f. Then, the leakage preventing wall portion 27f of the three-dimensional gather 26f is formed on the outer wall surface 82 opposite to the wall surfaces facing each other with the absorber interposed therebetween, and a part from the root 83 to the tip 84 of the outer wall surface 82 is formed on the three-dimensional gather 26f. The protrusion 29f protrudes toward the outer side with respect to the standing direction.

  In the absorbent pad 600 of the sixth embodiment, the protruding portion 29f is formed by bending a part of the leakage preventing wall portion 27f of the three-dimensional gather 26f. In addition, an adhesive portion 30 is provided at the root portion where the leakage preventing wall portion 27f is bent in order to prevent the protruding portion 29f from drooping. By providing this bonding portion 30, the protruding portion 29f protrudes outward with respect to the direction in which the three-dimensional gather 26f stands. The adhesive portion 30 is preferably provided at least on one end side and the other end side of the absorbent pad 600 at the root portion where the leak-proof wall portion 27f is bent. That is, at least both ends of the protruding portion 29f are held by the bonding portion 30, so that the standing state (the protruding state) of the protruding portion 29f is ensured satisfactorily.

  The bonding portion 30 fixes the protruding portion 29f (that is, the bent leak-proof wall portion 27f) by, for example, an adhesive or the like to such an extent that the protruding portion 29f can be prevented from drooping. The fixing method may be, for example, adhesion using a hot melt adhesive or other highly fluid adhesive, or may be welding by heat, ultrasonic waves, or the like such as heat sealing.

  Further, for example, a communication hole (not shown) or a slit (not shown) that communicates from the distal end side to the root side of the leakage preventing wall portion may be formed in a part of the protruding portion 29f. When urine leaks over the three-dimensional gather 26f, it passes through the communication hole or slit formed in the protrusion 29f and flows down between the three-dimensional gather 26f of the absorbent pad 600 and the three-dimensional gather of the disposable diaper.

  Moreover, although illustration is abbreviate | omitted, you may arrange | position the expansion-contraction material for protrusion parts in the front-end | tip part of the protrusion part 29f, for example. There is no restriction | limiting about the number of the expansion-contraction materials for protrusion parts, and what is necessary is just one or more. By disposing such a protruding portion elastic member, the standing state (protruding state) of the protruding portion 29f is more easily secured by the contraction force of the protruding member elastic member. However, it is preferable that the elongation rate of the three-dimensional gather stretchable material 28 is larger than the stretch rate of the stretchable stretchable material. If the expansion rate of the projecting stretchable material is too large, the contraction force of the three-dimensional gather stretchable material 28 becomes relatively weak, and the three-dimensional gather 26f may be difficult to stand up.

[Embodiment 7]
Hereinafter, Embodiment 7 of the absorption pad of this invention is demonstrated, referring FIG. FIG. 9 is a perspective view schematically showing a three-dimensional gather in the seventh embodiment of the absorbent pad of the present invention. In addition, since the absorptive main body in the absorption pad 700 of Embodiment 7 is comprised similarly to the absorptive main body 14 of the absorption pad 100 of Embodiment 1 shown in FIG. 1, description is abbreviate | omitted. Moreover, it is preferable that the solid gather 26g in the absorption pad 700 of Embodiment 7 is comprised similarly to the solid gather 26a of the absorption pad 100 of Embodiment 1 shown in FIG. 1 about the structure except having demonstrated below. .

  The absorbent pad 700 of the seventh embodiment includes a pair of three-dimensional gathers 26g arranged along each side edge of an absorbent body (not shown) of an absorbent main body (not shown). As shown in FIG. 9, the three-dimensional gather 26g has a leak-proof wall portion 27g that rises from a standing line of the three-dimensional gather 26g, and a three-dimensional gather stretchable material 28 that is disposed at the tip of the leak-proof wall portion 27g. And the leak-proof wall part 27g of the three-dimensional gather 26g has a part from the base 83 of the said outer side wall 82 to the front-end | tip 84 on the outer side wall 82 on the opposite side to the wall surface which mutually opposes on both sides of an absorber. It has the protrusion part 29g which protrudes toward an outer side direction with respect to the standing direction.

  In the absorbent pad 700 of the seventh embodiment, the protruding portion 29g is formed by unevenly processing a part of the leakage preventing wall portion 27g of the three-dimensional gather 26g. The concavo-convex process applied to the leak-proof wall part 27g may be a process in which a part of the surface of the leak-proof wall part 27g protrudes outward, and examples thereof include pleating and embossing. In the absorbent pad 700 of the seventh embodiment, the leakage preventing wall portion 27g is pleated. The “projection length of the projection 29g”, “length of the projection 29g”, “position of the projection 29g”, and the like are the same as those of the three-dimensional gather 26a of the absorbent pad 100 of Embodiment 1 shown in FIG. It is preferable to be configured.

[Embodiment 8]
Hereinafter, an absorbent pad according to an eighth embodiment of the present invention will be described with reference to FIG. FIG. 10: is a perspective view which shows typically the solid gathers in Embodiment 8 of the absorption pad of this invention. In addition, since the absorptive main body in the absorption pad 800 of Embodiment 8 is comprised similarly to the absorptive main body 14 of the absorption pad 100 of Embodiment 1 shown in FIG. 1, description is abbreviate | omitted. Moreover, it is preferable that the three-dimensional gather 26h in the absorption pad 800 of Embodiment 8 is comprised similarly to the three-dimensional gather 26a of the absorption pad 100 of Embodiment 1 shown in FIG. 1 about the structure except having demonstrated below. .

  The absorbent pad 800 of the eighth embodiment includes a pair of three-dimensional gathers 26h arranged along each side edge of an absorbent body (not shown) of an absorbent main body (not shown). In the absorbent pad 800 of the eighth embodiment, as in the absorbent pad of the seventh embodiment described so far, the protruding portion 29h is formed by unevenly processing a part of the leak-proof wall portion 27h of the three-dimensional gather 26h. ing. The absorbent pad 800 of the eighth embodiment is configured in the same manner as the absorbent pad of the seventh embodiment, except that the leak-proof wall portion 27h is embossed.

[Method of manufacturing absorbent pad]
Hereinafter, the overall flow of the manufacturing method of the absorbent pad of the present invention will be described. Here, although the manufacturing method of the absorption pad 100 shown in FIGS. 1-3 is demonstrated, about the manufacturing method of an absorption pad, it is not limited to the following manufacturing methods.

  First, the absorber 22 is placed on the upper surface of a long backsheet material that is a material of the backsheet 20. Then, a long top sheet material as a material of the top sheet 18 is placed on these upper surfaces. Thereby, the absorptive main body intermediate body which an absorptive main body continues continuously is produced.

  When the absorbent main body intermediate is produced, it is preferable to use two types of top sheet materials, that is, a top sheet material corresponding to a center sheet and a top sheet material corresponding to a side sheet. By providing a folded portion on the sheet material corresponding to the side sheet, the leakage preventing wall portion 27a of the three-dimensional gather 26a is formed.

  In addition, a sheet for forming the protruding portion 29a of the leakage preventing wall portion 27a is prepared, and the prepared sheet is subjected to uneven processing to produce an uneven processed sheet 29aa. By projecting the uneven processed sheet 29aa on the side sheet of the top sheet material, a protruding portion 29a is provided on a part of the leak-proof wall portion 27a. In addition, about the method of providing a protrusion part, it is not limited to the method of sticking uneven | corrugated sheet | seat 29aa, It changes suitably according to the structure of the absorption pad of Embodiment 1-8 demonstrated so far. Can do.

  Next, the three-dimensional gather stretchable material 28 is fixed in an extended state to the tip portion of the leak-proof wall 27a of the three-dimensional gather 26a formed by the side sheet. The distal end portion of the leak-proof wall portion 27a may be folded back so as to cover the three-dimensional gather stretchable material 28. Thereafter, the absorbent main body intermediate body on which the pair of three-dimensional gathers 26a is formed is cut at a predetermined length to manufacture the absorbent pad of the present invention.

[Embodiment 9]
Next, an embodiment (Embodiment 9) of the disposable diaper of the present invention will be described. The disposable diaper of Embodiment 9 is a pair of second three-dimensional gathers arranged along each side edge of the absorbent pad of the present invention described so far, the mounting area for mounting the absorbent pad, and the mounting area. A disposable diaper comprising: a diaper main body having: Hereinafter, the disposable diaper provided with the absorption pad of Embodiment 1 and the said diaper main body as a disposable diaper of Embodiment 9 is demonstrated using drawing. Here, FIG. 11 is a plan view schematically showing an embodiment of the disposable diaper of the present invention. 12 is a cross-sectional view schematically showing a CC ′ cross-section of the disposable diaper shown in FIG. 11.

  As shown in FIG.11 and FIG.12, the disposable diaper 900 of Embodiment 9 was arrange | positioned along each side edge of the absorption pad 100, the mounting area | region 91 for mounting | wearing with the absorption pad 100, and the mounting area | region 91. FIG. And a diaper main body 90 having a pair of second three-dimensional gathers 96. Here, the absorbent pad 100 is configured in the same manner as the absorbent pad 100 shown in FIGS. 1 to 3 (the absorbent pad of the first embodiment), and the same components as the absorbent pad 100 of the first embodiment. Are denoted by the same reference numerals, and the description thereof may be omitted. Hereinafter, the pair of solid gathers 26a of the absorbent pad 100 may be referred to as “first solid gathers 26a”. That is, the solid gather provided in the absorbent pad 100 is referred to as “first solid gather 26a”, and the solid gather provided in the diaper body 90 is referred to as “second solid gather 96”.

  The pair of second three-dimensional gathers 96 are members that function as leak-proof walls for preventing the urine excreted by the wearer from leaking out of the diaper main body 90. Each of the pair of second three-dimensional gathers 96 includes a second leak-proof wall portion 97 that rises from the standing line of the second three-dimensional gather 96, and a second three-dimensional gather elastic member disposed at the tip of the second leak-proof wall portion 97. 98. A region between the pair of second three-dimensional gathers 96 is a mounting region 91. That is, the absorbent pad 100 is placed between the pair of second three-dimensional gathers 96.

  In the disposable diaper 900 according to the ninth embodiment, in a state where the absorbent pad 100 is attached to the attachment region 91, at least a part of the protruding portions 29a of the pair of first three-dimensional gathers 26a of the absorbent pad 100 is a pair of second three-dimensional gathers. It exists in the position of the same height as the front-end | tip 94 of 96, or the position lower than the front-end | tip 94 of a pair of 2nd gathers 96. FIG. In other words, the tip 94 of the second three-dimensional gather 96 exists at the same height as a part of the protruding portion 29a of the first three-dimensional gather 26a or at a position higher than the protruding portion 29a of the first three-dimensional gather 26a. With this configuration, the protruding portion 29a of the first three-dimensional gather 26a serves as a support for the second three-dimensional gather 96, and the overlap between the first three-dimensional gather 26a and the second three-dimensional gather 96 can be effectively prevented. . Therefore, if the urine leaks over the first three-dimensional gather 26a, the second three-dimensional gather 96 can effectively prevent urine leakage.

  Further, in the disposable diaper 900, the tips 84 of the pair of first three-dimensional gathers 26 a of the absorbent pad 100 are the same as the tips 94 of the pair of second three-dimensional gathers 96 in a state where the absorbent pad 100 is attached to the attachment region 91. It is preferable to exist at a height position or a position higher than the tips 94 of the pair of second three-dimensional gathers 96. By configuring in this way, the first three-dimensional gather 26a functions as the first leakage barrier, and the second three-dimensional gather 96 functions as the second leakage barrier. Therefore, it is possible to fully enjoy the benefits of arranging three-dimensional gathers in a double manner.

  Here, “the position of the tip 84 of the first three-dimensional gather 26a (in other words, the height)” refers to a state in which the absorbent pad 100 is attached to the attachment region 91 of the diaper body 90. Therefore, even if the first three-dimensional gather 26a stands up from a position higher than the standing line of the second three-dimensional gather 96 by the height of the absorbent main body 14 of the absorbent pad 100, the wearing state (in other words, In the state where the absorbent pad 100 is placed), the heights of the tip 84 of the first three-dimensional gather 26a and the tip 94 of the second three-dimensional gather 96 are compared. Similarly, the “position (in other words, height) of the protruding portion 29a of the first three-dimensional gather 26a” is also in a state where the absorbent pad 100 is mounted on the mounting area 91 of the diaper body 90, In the mounted state, the heights of the protruding portion 29a of the first three-dimensional gather 26a and the tip 94 of the second three-dimensional gather 96 are compared.

  When the tip 84 of the first three-dimensional gather 26a exists at a position higher than the tip 94 of the second three-dimensional gather 96, the height (t1) of the tip 84 of the first three-dimensional gather 26a and the second three-dimensional gather 96 The difference (t1−t2) in the height (t2) of the tip 94 is preferably 2 mm or more and 90 mm or less, and more preferably 5 mm or more and 40 mm or less. In addition, as long as the above-described difference (t1−t2) does not become excessively large, it is possible to fully enjoy the benefits of the double arrangement of the three-dimensional gathers described so far. In addition, as a case where the above-mentioned difference (t1-t2) becomes excessively large, for example, when the height of the first solid gather 26a is excessively high and the height of the second solid gather 96 is excessively low. There are two possible cases. If the height of the first three-dimensional gather 26a is excessively high, the first three-dimensional gather 26a may hang down, or the standing state of the first three-dimensional gather 26a may deteriorate. Further, when the standing state of the first three-dimensional gather 26a is deteriorated, the second three-dimensional gather 96 may be covered. On the other hand, when the height of the second three-dimensional gather 96 is too low, the blocking effect by the second three-dimensional gather 96 may be reduced. For this reason, for example, when urine cannot be blocked by the first three-dimensional gather 26a and the urine reaches between the first three-dimensional gather 26a and the second three-dimensional gather 96, the urine is removed from the second three-dimensional gather. 96 may not be able to stop damming. However, the two examples described above are extreme cases where the height of either one of the first three-dimensional gather 26a and the second three-dimensional gather 96 is higher or lower than the height of a general three-dimensional gather. In general, the protrusion 29a of the first three-dimensional gather 26a effectively functions as a support for the second three-dimensional gather 96 unless the above-described difference (t1-t2) becomes extremely large.

  As long as the diaper main body 90 of the disposable diaper 900 of the ninth embodiment has the second three-dimensional gather 96 and the mounting region 91 described so far, the diaper main body of the conventional disposable diaper to which the absorbent pad can be attached and detached is similar. It may be configured. Hereinafter, the structure of the diaper main body 90 shown in FIG.11 and FIG.12 is demonstrated.

  The diaper main body 90 includes a second absorbent main body 114 having a pair of second three-dimensional gathers 96, a fastening tape 110, and a front patch 130. The mounting region 91 described so far is formed in the second absorbent main body 114. The fastening tape 10 is disposed so as to extend from the left and right side edges 6a, 6b of the back body 6 of the second absorbent main body 114. The front patch 130 is for attaching the fastening tape 110 and is disposed on the skin non-contact surface side of the front body 2 of the second absorbent main body 114.

  Although the disposable diaper 900 shown in FIG. 11 is a tape-type disposable diaper provided with the fastening tape 110 and the front patch 130, the disposable diaper of the present invention is not limited to such a tape-type disposable diaper. For example, the disposable diaper of the present invention may be a pants-type disposable diaper. In the present specification, the “tape-type disposable diaper” means a disposable diaper comprising a fastening tape 110 and a front patch 130 as shown in FIG. Means. On the other hand, in the present specification, the “pants-type disposable diaper” is not shown, but is composed of the front body, the crotch part, and the back body, and the corresponding side edges of the front body and the back body are joined together. It means a disposable diaper in which one waist opening and a pair of leg openings are formed. Such a disposable diaper can also be applied to the disposable diaper of the present invention as long as the absorbent pad is detachably attached to the inner surface thereof.

  The 2nd absorptive main body 114 is comprised from the front body 2, the crotch part 4, and the back body 6, and several sheets were laminated | stacked in the state which clamped the 2nd absorber 122. FIG. The disposable diaper 900 according to the ninth embodiment includes a second absorbent main body 114 in which a second top sheet 118 and a second back sheet 120 are stacked with a second absorbent body 122 sandwiched therebetween. In such a second absorbent main body 114, it is preferable that the second absorbent body 122 is disposed from the back body 6 to the front body 2 with the crotch part 4 as the center. The second absorbent body 122 is covered with a liquid-permeable second top sheet 118 from the surface on the skin side of the wearer (in other words, the surface on which the absorbent pad 100 is placed), and the opposite side of the skin is not applied. It is covered with a liquid-impermeable second backsheet 120 from the contact surface side. A pair of second three-dimensional gathers 96 are preferably arranged along the side edges 122a and 122b of the second absorbent body 122.

  The second absorbent body 122 is a member for absorbing and holding the wearer's urine. The second absorbent body 122 is made of an absorbent material in order to absorb and hold the wearer's urine and body fluid. As the absorbent material, for example, fluff pulp, super absorbent polymer (“SAP”), a hydrophilic sheet or the like can be used. An example of fluff pulp is a defibrated wood pulp or non-wood pulp. An example of a superabsorbent polymer is sodium polyacrylate. As the hydrophilic sheet, for example, tissue, absorbent paper, or a nonwoven fabric subjected to a hydrophilic treatment can be used.

  The second absorbent body 122 is sandwiched between the second top sheet 118 and the second back sheet 120, and the peripheral portions of both sheets are sealed, so that the second top sheet 118 and the second back sheet 120 are sealed. Enclosed in between. The shape of the second absorbent body 122 is not limited to the illustrated shape, and may be, for example, a rectangular shape, an hourglass shape, a gourd shape, or a T shape. In the disposable diaper 900 shown in FIG. 11, an hourglass-type absorber is adopted as the second absorber 122.

  The second top sheet 118 is a liquid-permeable sheet disposed so as to cover the skin contact surface side of the second absorbent body 122. As the liquid permeable material constituting the second top sheet 118, for example, a woven fabric, a non-woven fabric, or a porous fill can be adopted. In particular, it is preferable to use a non-woven fabric made of a thermoplastic resin such as polypropylene, polyethylene, polyester, or nylon and subjected to a hydrophilic treatment. The second top sheet 118 may be composed of a single sheet material, but may be composed of a plurality of sheet materials. For example, the structure which combined the sheet | seat arrange | positioned at the surface part of a 2nd absorber and the sheet | seat arrange | positioned at the part of a side flap may be sufficient.

  The second back sheet 120 is a liquid-impermeable sheet disposed so as to cover the second absorbent body 122 from the skin non-contact surface side. The second back sheet 120 prevents the liquid held by the second absorbent body 122 from leaking outside the diaper. As a liquid-impermeable material constituting the second back sheet 120, for example, a liquid-impermeable film made of a resin such as polyethylene can be employed. In particular, it is preferable to use a microporous polyethylene film. This microporous polyethylene film is preferable in that it has a large number of fine pores of about 0.1 μm and is liquid impermeable but moisture permeable so that it can prevent the diaper from being steamed. In addition, a cover sheet may be bonded to the outer surface of the second back sheet 120 in order to reinforce the second back sheet 120 and improve its feel. As a material for forming the cover sheet, for example, a nonwoven fabric made of a thermoplastic resin such as polyethylene, polypropylene, or polyester, or a wet nonwoven fabric can be used.

  In the disposable diaper 900, it is preferable to form gathers around the legs and gathers around the waist. The leg-around gather is a member for preventing a liquid such as urine from leaking from the opening around the leg of the disposable diaper. A leg elastic member 140 is disposed in an extended state along the opening around the leg portion, and a gathering force is formed around the leg portion using the contraction force of the leg elastic member 140. Thereby, it becomes difficult to form a gap around the leg, and urine leakage from the opening around the leg can be effectively prevented.

  For example, the disposable diaper 900 shown in FIG. 11 is an example in which three leg-part stretchable members 140 that are linear along the longitudinal direction (vertical direction) of the diaper are arranged around the leg part of the diaper main body 90. The leg-around elastic member 140 is made of, for example, thread rubber or flat rubber. The leg-around elastic members 140 are not necessarily arranged linearly, and may be arranged in a curve along the curve of the leg-periphery opening, for example.

  The waist gathers are members for preventing leakage of urine from the opening around the waist of the disposable diaper, improving the fit of the disposable diaper, and preventing the diaper from sliding down. A waist elastic member 142 is arranged in an extended state along the opening around the waist, and a waist circumference gather is formed using the contraction force of the waist elastic member 142. Thereby, since the back body 6 of the disposable diaper 900 closely_contact | adheres to a wearer's back part, a feeling of fitting can be improved, preventing the urine leakage from a back part effectively.

  For example, the disposable diaper 900 shown in FIG. 11 has a waist elastic member 142 made of flat rubber in a position corresponding to the waist around the end of the back body 6 along the short direction (left-right direction) of the diaper. This is an example. The waist elastic member 142 can be made of, for example, thread rubber or flat rubber, like the leg elastic member 140.

  Examples of the leg elastic member 140 and the waist elastic member 142 include, for example, rubber made of an elastic material such as natural rubber or synthetic rubber (urethane rubber, etc.), an elastic net, an elastic film, and an elastic foam (urethane foam, etc.). Can be adopted. These elastic materials are fixed to other constituent members of the diaper by an adhesive or other means. The fixing method may be, for example, adhesion using a hot melt adhesive or other highly fluid adhesive, or may be welding by heat, ultrasonic waves, or the like such as heat sealing.

  As mentioned above, although embodiment of this invention was described, this invention is not limited to these, A various deformation | transformation and change are possible within the range of the summary.

  The absorbent pad and the disposable diaper of the present invention can be applied to disposable diapers for infants or adults such as elderly people and persons with disabilities who need care. Therefore, the present invention can be suitably used in the child care industry, the care industry, and the like.

2: front body, 4: crotch, 6: back body, 6a, 6b: side edge, 14: absorbent main body, 16: exterior body, 18: top sheet, 20: back sheet, 22: absorbent body, 22a, 22b: side edge, 26a, 26b, 26c, 26d, 26e, 26f, 26g, 26h: solid gather, 27a, 27b, 27c, 27d, 27e, 27f, 27g, 27h: leak-proof wall portion, 28: solid gather expansion / contraction 29a, 29b, 29c, 29d, 29e, 29f, 29g, 29h: protrusion, 29aa: sheet (uneven processed sheet), 29bb, 29cc: sheet (pleated sheet), 29dd, 29ee: absorbent material , 30: adhesive portion, 81: wall surface (wall surface of leak-proof wall portion), 82: outer wall surface (outer wall surface of leak-proof wall portion), 83: root, 84: tip, 90: diaper body, 91 Mounting area, 94: tip, 96: second solid gather, 97: second leakproof wall, 98: second solid gather stretchable material, 100, 200, 300, 400, 500, 600, 700, 800: absorbent pad 110: Fastening tape, 114: Second absorbent main body, 130: Front patch, 118: Second top sheet, 120: Back sheet, 122: Second absorbent body, 122a, 122b: Side edges, 140: Legs Surrounding stretchable material, 142: waist stretchable material, 900: disposable diaper, L: standing line (standing line of solid gather), P: direction in which solid gathering stands.

Claims (10)

An absorbent main body laminated with a plurality of sheets sandwiching the absorbent body;
A pair of three-dimensional gathers arranged along each side edge of the absorbent body of the absorbent main body,
Each of the pair of three-dimensional gathers has a leak-proof wall portion that rises from an upright line of the three-dimensional gather, and a three-dimensional gather elastic member disposed at the tip of the leak-proof wall portion,
Each of the leak-proof wall portions of the pair of three-dimensional gathers is on the outer wall surface opposite to the wall surfaces facing each other across the absorber, and a part from the base to the tip of the outer wall surface is part of the three-dimensional gather. An absorbent pad having a protruding portion that protrudes outward with respect to a standing direction.   The absorption pad according to claim 1, wherein the protrusion has a protrusion length of 2 to 20 mm from a protrusion end of the protrusion to the surface of the outer wall surface.   3. The absorbent pad according to claim 1, wherein the protrusion has a length in a direction from the base side to the tip side of the outer wall surface of 5 to 100 mm.   The said protrusion part exists at least in a part of 1-90% of range from the said root of the said outer wall surface, when the length from the root of the said outer wall surface to a front-end | tip is 100%. The absorption pad as described in any one of.   The absorbent pad according to any one of claims 1 to 4, wherein the protrusion is hydrophilic or water repellent.   The absorbent pad according to any one of claims 1 to 5, further comprising a detachable adhesive portion on the back side of the absorbent main body. The absorbent pad according to any one of claims 1 to 6,
A diaper body having a mounting region for mounting the absorbent pad and a pair of second three-dimensional gathers arranged along each side edge of the mounting region;
In a state where the absorption pad is attached to the attachment region, at least a part of the protrusions of the pair of three-dimensional gathers is at the same height as the tips of the pair of second three-dimensional gathers or the pair of first Disposable diapers that are lower than the tip of the two-dimensional gather.   In a state where the absorption pad is mounted in the mounting region, the tip of the pair of solid gathers of the absorption pad is at the same height as the tip of the pair of second solid gathers or the pair of second solids The disposable diaper of Claim 7 which exists in a position higher than the front-end | tip of a gather. The absorbent pad according to any one of claims 1 to 6,
A diaper body having a mounting region for mounting the absorbent pad and a pair of second three-dimensional gathers arranged along each side edge of the mounting region;
A disposable diaper in which the tips of the pair of three-dimensional gathers of the absorbent pad are located higher than the tips of the pair of second three-dimensional gathers in a state where the absorbent pad is mounted in the mounting region.   The said diaper main body has a 2nd absorptive main body laminated | stacked in the state which clamped the 2nd absorber with the some sheet | seat, and the said mounting area | region is formed in the said 2nd absorptive main body. The disposable diaper according to any one of 9 above.

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