JP6880366B2 - Absorbent article - Google Patents

Description

The present invention relates to an absorbent article in which leakage of body fluid is suppressed.

Generally, adult disposable diapers include a tape stopper type, a urine absorbing pad, a pants type, and the like, and these disposable diapers are appropriately selected and used according to the need for long-term care in excretion of the wearable person. These absorbent articles are composed of a liquid permeable top sheet, a liquid permeable back sheet, and an absorber arranged between the two sheets. By adopting such a configuration, body fluids such as urine permeate through the top sheet of the absorbent article and are absorbed by the absorber, and are prevented from leaking to the outside by the back sheet.

By the way, tape-stop type and pants-type disposable diapers may be used alone or with a urine absorbing pad inside, but at present, they are used in combination with a urine absorbing pad and are absorbent articles. In most cases, a certain urine absorbing pad is used by stacking it on the top sheet. This is because the cost per disposable diaper is high, so after absorbing and holding excrement with a urine absorbing pad that is cheaper than tape-stopping type or pants type disposable diapers, replace only the urine absorbing pad. This is because even after excretion, it is not necessary to replace the more expensive tape-stopping type or pants-type disposable diapers, and the disposable diapers can be used economically at low cost. In response to such widespread use, in recent years, urine absorbing pads have been developed that are intended to be used in combination with tape-stopping type and pants-type disposable diapers.

In general, tape-fastened disposable diapers are often worn by wearers who have a high degree of long-term care and who spend a lot of time lying down. Since most of the wearers with such a high degree of long-term care excrete while wearing the disposable diaper, it is a particularly important quality of the disposable diaper that the excrement does not leak from the disposable diaper. Three-dimensional gathers are effective for both urine absorbing pads and tape-stopping type disposable diapers to prevent lateral leakage, which is the leakage of excrement in the width direction of the disposable diapers. Many have three-dimensional gathers. For example, Patent Document 1 describes an absorbent article having a top sheet, a back sheet, an absorber, and a side flap, which is adhered between the side edge of the side flap and the folding line in the inseam region when worn. An absorbent article is disclosed characterized in that a double three-dimensional gather that stands upward with a fixed portion as a base end is formed.

In addition, to prevent leakage of body fluids when using tape-type paper diapers or pants-type paper diapers together with urine-removing pads, use urine-removing pads as the top of tape-type paper diapers or pants-type paper diapers. It is also important that the urine absorbing pad is placed at an appropriate position on the sheet and the position of the urine collecting pad is stably maintained even during use (see, for example, Patent Document 2). Among the problems of preventing the displacement of the urine collecting pad, it is known that the three-dimensional gather works effectively for preventing the displacement in the width direction.

Japanese Unexamined Patent Publication No. 10-179638 Japanese Unexamined Patent Publication No. 2004-261332

As described above, although it is effective to provide three-dimensional gathers for leakage in the width direction and deviation in the width direction when the paper diaper and the urine collecting pad are used together, the back corresponding to both ends in the longitudinal direction of the paper diaper. To date, few disposable diapers have been effectively treated against leakage of excrement from the side and ventral side, and displacement of the urine absorbing pad on the disposable diaper and in the longitudinal direction. Therefore, the present invention has been made in view of the above problems, and is an absorbent article used in combination with a urine absorbing pad, in which leakage of body fluid from the back side or ventral side is reduced and the present invention is used in combination. It is an object of the present invention to provide an absorbent article capable of reducing the displacement of the urine absorbing pad in the longitudinal direction.

The inventor of the present invention has conducted diligent research in order to solve the above problems. As a result, in the absorbent article including the top sheet, the back sheet, and the absorber, the waist sheet is provided on the top sheet at a position covering the front end portion and / or the rear end portion of the absorber. The present invention has been completed by finding that the above problems can be solved by an absorbent article having a substantially U-shaped notch formed in the waist sheet in the width direction. Specifically, the present invention provides the following.

(1) A first aspect of the present invention is an absorbent article comprising a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorber arranged between the top sheet and the back sheet. A waist sheet is provided on the top sheet at a position covering the front end portion and / or the rear end portion of the absorber, and the waist sheet has a substantially U-shape extending in the width direction. A notch is formed, the notch opens toward the center in the longitudinal direction , and a straight or broken line embossed portion is formed on a straight line connecting the two ends of the substantially U-shaped notch. The top sheet and the waist sheet are not joined in the vicinity of the opening of the notch, and the opening of the notch is formed when the absorbent article is worn. , An absorbent article capable of forming a space between the top sheet and the waist sheet.

(2) A second aspect of the present invention is the absorbent article according to (1), wherein the absorbent article has a pair of three-dimensional gathers extending in the longitudinal direction on both sides in the width direction. The notch is provided inside the base of the three-dimensional gather and in the vicinity of both ends in the longitudinal direction of the absorber so as to be orthogonal to the longitudinal direction.

(3) A third aspect of the present invention is the absorbent article according to (1) or (2), wherein the dimension of the notch in the longitudinal direction is 15 mm or more and 150 mm or less, and the dimension in the width direction is , It is characterized in that it is larger than the dimension in the longitudinal direction.

(Delete)

(5) A fifth aspect of the present invention is the absorbent article according to any one of (1) to (4), wherein the waist sheet is a spunbonded non-woven fabric, a thermal-bonded nonwoven fabric, a polyethylene film, or these. It is characterized in that it is a composite sheet in which the above sheets are combined and joined.

(6) The sixth aspect of the present invention is the absorbent article according to any one of (1) to (5), which is a tape-stop type absorbent article or a pants type absorbent article. It is characteristic of.

In the absorbent article of the present invention, a waist sheet is provided on the top sheet at a position covering the front end portion and / or the rear end portion of the absorber, and the waist sheet extends in the width direction in the longitudinal direction. Since the notch that opens toward the center is provided, the leakage of body fluid from the back side and the ventral side is effectively prevented. Further, when the urine absorbing pad is used in combination with the absorbent article of the present invention, the urine absorbing pad is fitted into the opening of the waist sheet to effectively prevent the urine absorbing pad from being displaced in the longitudinal direction. Can be done.

It is a top view when the absorbent article which concerns on embodiment of this invention is used together with a urine collecting pad 50. Is _X 1 -X ₁ cross-sectional view in FIG. It is a drawing which shows the absorbent article of Example 1. FIG. It is a drawing which shows the absorbent article of the comparative example 1. FIG.

Hereinafter, the absorbent article according to the embodiment of the present invention will be described in detail with reference to FIGS. 1 and 2. In the description of the embodiment, the same elements are numbered the same throughout. In the description of the present specification, the time when the absorbent article 1 is worn means at least one of the time when the absorbent article 1 is worn and the time after the absorbent article 1 is worn. The longitudinal direction of the absorbent article 1 is a direction extending in front of and behind the wearer when the absorbent article 1 is worn, and is a direction indicated by reference numeral Y in the drawing. The width direction of the absorbent article 1 is a direction laterally or orthogonal to the longitudinal direction, and is a direction indicated by reference numeral X in the drawing. Further, the body-side surface is the surface of the front and back surfaces of each member such as the absorber that is arranged on the wearer's skin side when worn, and the clothing-side surface is the front and back surfaces of each member such as the back sheet. Of these, the surface is directed to the side opposite to the wearer's skin side when worn. The body fluid refers to a liquid excreted from the body such as urine, blood, and water in loose stool. Further, the absorbent article 1 of the present invention is preferably a tape-type disposable diaper or a pants-type disposable diaper, regardless of whether it is for infants or adults. The absorbent article 1 of the present invention will be described by taking a disposable diaper as an example.

<Absorbable article>
1, an absorbent article 1 according to the embodiment of the present invention, is a plan view when used in combination with the urine absorbing pad 50, FIG. 2 is a X ₁ -X ₁ cross-sectional view in FIG. The absorbent article 1 of the present invention is located between the front body 10A covering the wearer's abdomen, the back body 10C covering the wearer's back, the front body 10A and the back body 10C when worn, and is applied to the inseam of the wearer. It is divided into the inseam 10B that is broken. Further, as shown in FIG. 1, the absorbent article 1 of the present invention has a liquid-permeable top sheet 21 arranged on the body side surface side and a liquid-impermeable back arranged facing the top sheet 21. It is arranged between the sheet 23 and the top sheet 21 and the back sheet 23, and has an absorber 22 that absorbs body fluids. The absorbent article 1 of the present invention is preferably a disposable diaper, and more preferably a disposable diaper for adults.

(Top sheet)
The top sheet 21 may use a base material having a liquid permeability that allows body liquid to move to the absorber 22, and for example, a non-woven fabric such as a thermal-bonded non-woven fabric or a composite non-woven fabric in which a thermal-bonded non-woven fabric / spunbonded non-woven fabric is laminated , An open film such as an open polyethylene film, a foam film such as polyethylene foam and urethane foam, or a composite sheet in which these are laminated. Further, the surface of the top sheet 21 is preferably embossed or perforated in order to improve the liquid permeability, and the embossing or perforation can be performed by a conventionally known method. Further, in order to reduce the irritation of the top sheet 21 to the skin, it is also preferable that the top sheet 21 contains a lotion, an antioxidant, an anti-inflammatory component, a pH adjuster, an antibacterial agent, a moisturizer and the like. The basis weight of the top sheet 21 is preferably ^{13 g / m 2} or more and 50 g / m ^{2 or less from the viewpoint of strength and workability.} The shape of the top sheet 21 is not particularly limited, but it may be a shape that covers the absorber 22 in order to guide the body fluid to the absorber 22 so as not to leak.

(Absorber)
The absorber 22 absorbs and retains body fluids, and contains, for example, fluff pulp and a super absorbent polymer (SAP). The base material of the absorber 22 is not particularly limited as long as it is generally used for absorbent articles such as sanitary napkins, diapers, and urine absorbing pads 50. For example, fluff pulp, cotton, rayon, acetate, tissue, etc. It is formed from materials such as absorbent paper and hydrophilic non-woven fabric. Among these, it is preferable to use fluff pulp from the viewpoint of absorbability. Examples of such fluff pulp include those obtained by defibrating wood pulp, synthetic fiber, polymer fiber, non-wood pulp and the like into a cotton-like shape. Further, the basis weight of the base material of the absorber 22 is preferably ^{100 g / m 2} or more and 800 g / m ^{2 or less in order to improve the absorption performance and the touch.}

The SAP of the absorber 22 is not particularly limited as long as it can absorb body fluids and prevent backflow. For example, sodium polyacrylate-based, polyasparaginate-based, (starch-acrylic acid). ) Graft copolymers, (acrylic acid-vinyl alcohol) copolymers, (isobutylene-maleic anhydride) copolymers and saponified products thereof. Among these, it is preferable to use sodium polyacrylate from the viewpoint of the amount of absorption per weight. The basis weight of the SAP of the absorber 22 ^{is preferably 50 g / m 2} or more and 500 g / m ² or less from the viewpoint of improving the absorption performance and the touch, and the weight of the SAP is 15% or more and 50% or less. Is preferable.

The absorber 22 preferably contains a base material and SAP, and its composition is preferably formed by mixing SAP particles in the base material or a SAP sheet in which SAP particles are fixed between the base materials. .. Further, from the viewpoint of preventing leakage of SAP particles and stabilizing the shape of the absorber 22, it is preferable to wrap the absorber 22 in a carrier sheet. The base material of the carrier sheet may be any one having hydrophilicity, and examples thereof include hydrophilic non-woven fabrics such as tissue, absorbent paper, and air-laid non-woven fabric. When the absorber 22 includes a plurality of carrier sheets, the base materials of the carrier sheets may be the same or different.

The shape of the absorber 22 is not particularly limited, and examples thereof include a rectangular shape, an hourglass shape, and an I shape. The absorber 22 may be used by stacking two or more layers.

(Waist sheet)
In the absorbent article 1 of the present invention, the waist sheet 27 is provided on the top sheet 21 at a position covering the front end portion and / or the rear side end portion of the absorber 22. The waist sheet 27 may be provided only at a position that covers the front end portion of the absorber 22, or may be provided only at a position that covers the rear end portion. It is preferable that it is provided at both positions covering the rear end portion. As the waist sheet 27, a spunbonded non-woven fabric, a thermal-bonded non-woven fabric, a polyethylene film, or a composite sheet in which these sheets are combined can be used. The waist sheet 27 may be composed of only one sheet, but is preferably a composite sheet composed of two or more sheets in order to provide rigidity. When the waist sheet 27 is formed of a composite sheet composed of two or more sheets, it is preferable that the two or more sheets are joined by means such as hot melt adhesive, heat fusion, and heat embossing. The material constituting the waist sheet 27 may be a hydrophilic material, a water-repellent material, or a hydrophobic material, but may be on the back side of the wearer or on the back side of the wearer. From the viewpoint of effectively preventing the leakage of body fluid from the ventral side, it is preferable to use a water-repellent material or a hydrophobic material. The basis weight of the waist sheet 27 ^{is preferably 15 g / m 2} or more and 100 g / m ² or less, and more preferably 20 g / m ² or more and 70 g / m ² or less.

(Notch)
In the present invention, the waist sheet 27 is formed with a substantially U-shaped notch 271 extending in the width direction, and the notch 271 opens toward the center in the longitudinal direction. In the vicinity of the opening of the notch 271, the top sheet 21 and the waist sheet 27 are not joined to each other, and when the absorbent article 1 is worn, the opening of the notch 271 creates a space between the top sheet 21 and the waist sheet 27. It can be formed. By adopting such a configuration, when the absorbent article 1 is worn, the notch 271 stands up and acts as a weir for the body fluid, effectively leaking the body fluid from the back side and the ventral side of the absorbent article 1. Can be prevented. Further, as shown in FIGS. 1 and 2, when the absorbent article 1 of the present invention is used in combination with the urine absorbing pad 50, the urine absorbing pad 50 is arranged inside the notch 271 and fitted into the opening. As a result, the urine absorbing pad 50 is stably held by the absorbent article 1, and the displacement of the urine absorbing pad 50 in the longitudinal direction can be effectively prevented. When the absorbent article 1 of the present invention has a pair of three-dimensional gathers 32 extending in the longitudinal direction on both sides in the width direction, the substantially U-shaped notch 271 is larger than the base of the three-dimensional gather 32. It is preferable that the absorbent body 22 is provided on the inside in the vicinity of both ends in the longitudinal direction so as to be orthogonal to the longitudinal direction of the absorbent article 1.

The dimension of the substantially U-shaped notch 271 is preferably 15 mm or more and 150 mm or less in the longitudinal direction of the absorbent article 1, and more preferably 30 mm or more and 100 mm or less. The dimension of the substantially U-shaped notch 271 in the width direction of the absorbent article 1 may be larger than the dimension in the longitudinal direction, but more specifically, it is preferably 50 mm or more and 300 mm or less, and more preferably 100 mm or more. It is more preferably 250 mm or less. By making the size of the notch 271 within the above range, leakage from the back side and the ventral side of the absorbent article 1 is effectively prevented, and the absorbent article 1 is used in combination with the urine absorbing pad 50. The displacement of the urine collecting pad 50 in the longitudinal direction is effectively prevented. The side of the substantially U-shaped notch 271 extending in the width direction may be composed of a straight line, or draws an arc that becomes convex toward the center side in the longitudinal direction or the end side in the longitudinal direction. It may be composed of a curved line.

In the present invention, a linear or broken line embossed portion 272 connects two ends of a substantially U-shaped notch 271 (the base when the opening is opened and the notch 271 stands up). It is preferable that it is provided. By providing such an embossed portion 272, the base portion of the notch 271 can be easily bent by using the embossed portion 272 as a valley, and when the absorbent article 1 is worn, the notch 271 opens and easily stands up. Therefore, by adopting such a configuration, it is possible to effectively prevent the leakage of body fluid from the back side and the ventral side of the absorbent article 1, and the urine collecting pad 50 is fitted into the opening of the notch 271. It also makes it easier to match.

Further, in the present invention, an additional notch that opens toward the center in the longitudinal direction may be provided on the waist sheet 27 at a portion of the substantially U-shaped notch 271 from the center line in the longitudinal direction. Not shown). By providing such an additional notch, leakage of body fluid from the back side and the ventral side when the absorbent article 1 is worn is more effectively suppressed.

(Back sheet)
For the back sheet 23, a base material having a liquid impermeable property that can prevent the body fluid held by the absorber 22 from wetting the clothes may be used, and a resin film or a resin film and a non-woven fabric are laminated. It is formed from a material such as a composite sheet. Examples of the resin film that can be used for the back sheet 23 include a film made of polyester, polyvinyl alcohol, polyethylene, polypropylene and the like, a composite film of polyethylene and polypropylene, and the like. The non-woven fabric that can be used for the composite sheet is not particularly limited in its manufacturing method, for example, spunbond non-woven fabric, melt-blow non-woven fabric, spunbond non-woven fabric / melt-blow non-woven fabric, spunbond non-woven fabric / melt-blow non-woven fabric / span. Examples thereof include a composite non-woven fabric in which bonded non-woven fabrics are laminated, and a composite material thereof.

The basis weight of the back sheet 23 is preferably ^{15 g / m 2} or more and 100 g / m ^{2 or less from the viewpoint of strength and workability.} Further, in order to prevent stuffiness at the time of mounting, it is preferable that the back sheet 23 has air permeability. In order to provide the back sheet 23 with breathability, for example, a filler may be blended in the resin film of the base material, or the back sheet 23 may be embossed. Here, as the filler, calcium carbonate can be mentioned, and as the processing method thereof, a known method can be used without limitation.

In the present invention, the liquid diffusible sheet may be provided on the surface side of the top sheet 21 on the clothing side. In this case, the body fluid first diffuses sequentially into the absorber 22 through the top sheet 21 and is absorbed by the absorber 22. Here, it is preferable that the body fluid is absorbed by the absorber 22 and then quickly diffuses back and forth and left and right. However, by providing a liquid diffusing sheet under the top sheet 21 to promote the diffusion, the body fluid can be widely spread. It can be moved to the entire absorber 22 and efficiently absorbed.

The liquid-diffusible sheet is a hydrophilic non-woven fabric having ^{a thickness of 0.1 mm or more and a basis weight of 18 g / m 2 or more.} , Spunbonded non-woven fabric can be used. Among these, an air-through non-woven fabric having excellent liquid return prevention performance is particularly preferable.

Further, in order to improve the fit of the wearer, the absorbent article 1 includes a three-dimensional gather 32 having an elastic member for three-dimensional gather, a leg gather having an elastic member for leg gather (not shown), and an elastic member for waist gather. It may be provided with waist gathers (not shown). By having leg gathers and waist gathers, the leg openings and torso of the absorbent article 1 are made elastic to improve the fit when worn and prevent body fluids from leaking to the outside. By having the gathers 32, lateral leakage is prevented.

(Side flaps and side panels)
At least a pair of side flaps 24 are formed on both sides of the back body 10C of the absorbent article 1 in the width direction, and side panels 25 are formed on the widthwise side edges of each of the side flaps 24 on the free end side. It is preferable that two fastening tapes 26 are provided on the side edge portion in the width direction of the side panel 25. In the description of the present specification, the side panel 25 and the fastening tape 26 are described as separate members, but the side panel 25 and the fastening tape 26 are not limited to those formed by the separate members. , Both may be integrally formed. Here, it is preferable that the two fastening tapes 26 on one side panel 25 are provided apart from each other along the longitudinal direction of the absorbent article 1, and in the unfolded state, the surface of the fastening tape 26 on the body side (the body side surface ( The skin contact surface) is provided with fastening means composed of hook members constituting a hook-and-loop fastener for fastening the front body 10A and the rear body 10C, and the tip of each fastening tape 26 on the free end side of the fastening means. It is preferable that the portion is provided with a knob margin. On the other hand, a target tape (not shown) formed of loop members constituting the hook-and-loop fastener is provided on the surface of the back sheet 23, which is the surface of the front body 10A on the clothing side, and the absorbent article 1 is attached to the wearer. In this state, it is preferable that the fastening means is fixed to the target tape which is a loop member. The hook member refers to a member composed of hook-shaped protrusions among the members constituting the hook-and-loop fastener, and the loop member is a member paired with the hook member and is densely brushed in a loop shape. Refers to a member. The hook-and-loop fastener is formed by pairing the hook member and the loop member. When wearing the absorbent article 1, the back body 10C is placed on the back of the wearer, the front body 10A is brought to the wearer's abdomen side, and the fastening tape 26 is fastened to the target tape. Can be worn by a person.

Here, examples of the base material of the side flap 24 include a non-woven fabric made of polyethylene, polyolefin, polystyrene, or the like, and these base materials may be used alone or in combination of two or more. Further, as the base material of the side panel 25 and the fastening tape 26, a resin film or a non-woven fabric made of polyethylene, polyolefin, polystyrene or the like can be mentioned, and these base materials may be used alone or in combination of two or more.

<Manufacturing method of absorbent articles>
The method for producing the absorbent article 1 is not particularly limited, and a conventionally known method can be adopted. For example, the absorber 22 is sandwiched between the top sheet 21 and the back sheet 23, and the notch 271 is further formed. After arranging the waist sheet 27, the side flap 24, the side panel 25, the fastening tape 26, and the target tape, and the liquid diffusible sheet and the three-dimensional gather 32 as appropriate, the top sheet 21 and the back sheet 23 are partially formed. Alternatively, it can be manufactured by fixing it with a hot melt adhesive, heat embossing, ultrasonic embossing, high frequency embossing, or the like over the entire circumference.

Although the present invention has been described above using the embodiments, it goes without saying that the technical scope of the present invention is not limited to the scope of the invention described in the above embodiments. It is clear to those skilled in the art that it is possible to add. Further, it is clear from the description of the scope of claims that the form to which such a modification or improvement is added may be included in the technical scope of the present invention.

Hereinafter, the present invention will be described in detail with reference to examples. The present invention is not limited to the examples shown below.

<Example 1>
(Preparation of absorber)
An absorbent mat prepared by stacking 50 g of fluff pulp crushed and defibrated from a pulp sheet and 15 g of a highly absorbent polymer was prepared and cut into a length of 700 mm and a width of 330 mm. This absorber is laminated together with the top sheet, waist sheet and back sheet, and forms a pair of three-dimensional gathers for preventing lateral leakage, side flaps, side panels, etc., and is a tape-stop type absorbent article having a length of 840 mm and a width of 540 mm. Was prepared and used as a sample of Example 1. ^Two spunbonded non-woven fabrics (basis weight 15 g / m 2) are used as the top sheet, and a breathable polyethylene film (basis weight 20 g / m ² ) and spunbonded non-woven fabric (basis weight 20 g / m 2) are used as the waist sheet. A composite sheet to which m ² ) was bonded was used, and as a back sheet, a composite sheet to which a breathable polyethylene film (basis weight 20 g / m ² ) and a spunbonded non-woven fabric (basis weight 20 g / m ² ) were bonded was used. .. Here, the two waist sheets are formed with substantially U-shaped notches having a longitudinal dimension of 40 mm and a width dimension of 120 mm, and these notches are formed in the vicinity of both ends in the longitudinal direction of the absorber. I tried to position it. In each notch, a straight embossed portion is formed on the straight line connecting the two ends (bases) of the substantially U-shaped notch, and the U-shaped notch stands up to form the top sheet. It was configured so that it could be separated. The outline of the obtained absorbent article is shown in FIG. Regarding the obtained absorbent article, the sensory evaluation of the monitor test showed that urine leakage from the ventral side, difficulty in stool leakage, urine leakage from the back side, difficulty in stool leakage, and the urine absorbing pad used together. The resistance to slippage was evaluated. The above results are shown in Table 1.

(Difficulty of leaking urine)
Twenty panelists investigated urine leakage from the ventral and back sides when wearing absorbent articles by selecting "with urine leakage" or "no urine leakage", and evaluated according to the following criteria. went.
⊚: When “no urine leakage” is 16 or more and 20 or less ○: When “no urine leakage” is 11 or more and 15 or less △: “No urine leakage” is 6 or more and 10 or less When ×: When there is no "no urine leakage" or when there are 1 or more and 5 or less people

(Difficulty in leaking stool)
Twenty panelists investigated stool leaks from the ventral and back sides when wearing absorbent articles by selecting "feces leak" or "no stool leaks" and evaluated according to the following criteria. went.
⊚: When “no stool leak” is 16 or more and 20 or less ○: When “no stool leak” is 11 or more and 15 or less △: “No stool leak” is 6 or more and 10 or less When ×: When there is no “feces leak” or when there are 1 or more and 5 or less people

(Difficult to shift)
Twenty panelists investigated the resistance to displacement of the urine absorbing pad used in combination with the absorbent article in the longitudinal direction by selecting "easy to shift" or "difficult to shift", and evaluated according to the following criteria.
⊚: “Difficult to shift” is 16 or more and 20 or less ○: “Difficult to shift” is 11 or more and 15 or less △: “Difficult to shift” is 6 or more and 10 or less ×: “Difficult to shift” When there is no "" or when there are 1 or more and 5 or less

<Comparative example 1>
As shown in FIG. 4, a urine collecting pad was prepared by the same method as in Example 1 except that the waist sheet was not provided, and used as a sample of Comparative Example 1 in the same test and evaluation as in Example 1. Was done. The results obtained are shown in Table 1.

The above results are shown in Table 1.

As is clear from Table 1, the absorbent article of Example 1 in which the waist sheet was provided on the top sheet and the notch was provided was compared with the absorbent article of Comparative Example 1 in which the waist sheet and the notch were not provided. , The difficulty of urine leakage and the difficulty of stool leakage were both improved, and the urine collecting pad was also less likely to slip. From the above, it can be seen that by providing the waist sheet on the top sheet and providing a notch in the waist sheet, it is possible to provide an absorbent article in which the leakage of body fluid is small and the urine absorbing pad used in combination is hard to slip.

1 Absorbent article 10A Front body 10B Inseam 10C Back body 21 Top sheet 22 Absorbent 23 Back sheet 24 Side flap 25 Side panel 26 Fastening tape 27 Waist sheet 271 Notch 272 Embossed part 32 Three-dimensional gather 50 Urine collecting pad

Claims (5)

An absorbent article comprising a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorber disposed between the top sheet and the back sheet.
A waist sheet is provided on the top sheet at a position covering the front end and / or the rear end of the absorber.
The waist sheet is formed with a substantially U-shaped notch extending in the width direction, and the notch is open toward the center in the longitudinal direction, and there are two of the substantially U-shaped notches. A straight or broken line embossed portion is provided on the straight line connecting the ends so that the notch can be easily raised.
The top sheet and the waist sheet are not joined in the vicinity of the opening of the notch, and the opening of the notch can form a space between the top sheet and the waist sheet when the absorbent article is worn. Is an absorbent article. The absorbent article has a pair of three-dimensional gathers extending in the longitudinal direction on both sides in the width direction.
The absorbent article according to claim 1, wherein the notch is provided inside the base portion of the three-dimensional gather and in the vicinity of both ends in the longitudinal direction of the absorber so as to be orthogonal to the longitudinal direction. The absorbent article according to claim 1 or 2, wherein the dimension of the notch in the longitudinal direction is 15 mm or more and 150 mm or less, and the dimension in the width direction is larger than the dimension in the longitudinal direction. The absorbent article according to any one of claims 1 to 3 , wherein the waist sheet is a spunbonded non-woven fabric, a thermal-bonded non-woven fabric, a polyethylene film, or a composite sheet obtained by combining and joining these sheets. From claim 1, which is a tape-stop type absorbent article or a pants type absorbent article.
The absorbent article according to any one of 4.

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