JP4635127B2 - Absorbent article - Google Patents

Description

  The present invention relates to a novel absorbent article.

Absorbent articles such as paper diapers absorb urine discharged from the wearer by an absorbent using an absorbent component such as wood pulp, super absorbent polymer (hereinafter also referred to as “SAP”), and It is an article that accepts stool (stool).
Conventional absorbent articles are provided with pleated members called inner gathers or outer gathers that can be expanded and contracted by inserting rubber on the left and right sides of the portion that absorbs urine and receives stool. The structure prevents leakage of urine and feces to the outside.

However, in such an absorbent article, the central part expands when worn, and the distance between the left and right inner gathers or outer gathers is about 70 to 80 mm for children and about 100 to 150 mm for adults. Since the entire lower body is encased, there is a problem that when the urine is discharged, the entire lower body gets wet, and when the stool is discharged, the wearer's buttocks tend to get dirty from the entire lower body.
In addition, since the conventional inner gathers or outer gathers are stretchable and can extend in the front / rear and left / right directions, depending on the position and movement of the wearer, there is a gap between the absorbent article and the wearer's body during or after the discharge. There is also a problem that urine and feces may leak to the outside through the gap.
Further, the absorbent article has a problem that urine and stool are mixed with each other, and the odor becomes strong and the rash easily occurs.

  Therefore, the present invention is an absorbent article in which the body surface of the lower body is less wetted by urine, the buttocks are not easily soiled by stool discharge, and leakage of urine and stool to the outside can be effectively prevented. Therefore, an object of the present invention is to provide an absorbent article free from problems such as mixing of urine and stool, increasing the odor, and facilitating rash.

  As a result of intensive studies to achieve the above object, the present inventor has completed an absorbent article having a novel structure.

That is, the present invention provides the following (1) to (13).
(1) It has a bottom portion and a pair of side portions that rise upward from the left and right sides of the bottom portion and are bent so that edges are inside, and the inner portion is formed by the bottom portion and the pair of side portions. A sheet-like first leak preventer that forms a space;
An absorbent body containing at least one layer in the internal space and containing a superabsorbent resin and capable of absorbing bodily fluids;
A pair of edge shape holding members, which are provided along each of the edge portions of the pair of side portions, hold the shape of the edge portion, and closely attach the edge portion to the wearer's body;
An absorbent article comprising a bridging member provided between the central portions of the pair of edge shape holding members,
When the bridging member is coupled to the bottom surface portion and the pair of side portions, the internal space is separated into a front urine absorption space and a rear stool storage space, and the urine absorption space An absorbent article in which the absorber is disposed.
(2) The absorbent article according to (1), wherein the bridging member is in contact with the upper surface of the edge shape holding member.
(3) The absorbent article according to (1) or (2), wherein the bridging member is in contact with the lower surface of the edge shape holding member.
(4) The absorbent article according to any one of (1) to (3), wherein the stool accommodating space includes a sheet-like second leak preventer.
(5) The absorbent article according to (4), wherein the absorber is disposed between the first leak preventer and the second leak preventer in the stool storage space.
(6) The absorbent article according to any one of (1) to (5), wherein each of the pair of side portions is formed in a pleat shape folded in two or more steps.

(7) The absorbent body according to (6), wherein the absorbent body is disposed in at least two of two or more spaces defined by the pair of side portions formed in a pleat shape. Goods.
(8) Furthermore, the front part which couple | bonds with the part from the bottom part of the said 1st leak preventer and the front part of the pair of side part to the front side of the upper part, and closes the front opening of the said 1st leak preventer A leak preventer and / or a rear side of the first leak preventer coupled to the bottom portion of the first leak preventer and a portion from a rear end of the pair of side portions to an upper rear side The absorbent article according to any one of the above (1) to (7), comprising a rear leak preventer that closes the opening.
(9) The absorbent article according to any one of (1) to (8), wherein the absorbent body is disposed so as to be separated from each other on the left and right.
(10) The absorbent article according to (9), wherein a liquid guide sheet is disposed between the absorbent bodies that are spaced apart from each other on the left and right.
(11) The absorbent article according to any one of (1) to (10), wherein the absorbent is a sheet-shaped absorbent formed by coating the superabsorbent resin on a nonwoven fabric.
(12) The absorbent body is arranged to be separated from the left and right, and the sheet-like absorbent body is formed in a tube shape with the side coated with the superabsorbent resin of the nonwoven fabric as the inside. The absorbent article according to (11) above.
(13) The absorbent body according to (11) or (12), wherein the sheet-like absorbent body is a super absorbent sheet containing 50% by mass or more of the super absorbent polymer and having a thickness of 1 mm or less. Goods.

  The absorbent article of the present invention is less likely to cause urine to wet the body surface of the lower body, is less likely to cause stool stains, and can effectively prevent leakage of urine and stool to the outside. Further, the absorbent article of the present invention can be subjected to urine / feces separation treatment, and as a result, problems such as urine and stool are mixed and the smell becomes strong and rash easily occurs. be able to.

  Hereinafter, an absorbent article according to the present invention will be described in detail based on preferred embodiments shown in the accompanying drawings. In the present specification, when the absorbent article of the present invention is actually worn, the side closer to the wearer's skin is referred to as “upper” and the far side is referred to as “lower”. When the absorbent article of the present invention is actually worn, the side corresponding to the front side of the wearer's body is referred to as “front”, and the side corresponding to the rear side is referred to as “rear”. Moreover, in order to make an understanding easy in each figure, the member which is actually contacting may be shown spaced apart.

FIG. 1 is a schematic diagram illustrating an example of an absorbent article. 1A is a plan view, FIG. 1B is a lateral end view along the line IB-IB in FIG. 1A, and FIG. 1C is a view in FIG. It is a lateral end view along the IC-IC line.
In each plan view in the attached drawings, the front side of the absorbent article or the like is positioned on the upper side of the drawing.

  The absorbent article 100 basically has a bottom surface portion 12 and a pair of side portions 14 that rise upward from the left and right sides of the bottom surface portion 12 and are bent so that the edges are inside. And the pair of side portions 14 form a sheet-like first leak preventer 10 and at least one layer disposed in the inner space S, and absorbs bodily fluids. And a pair of edge shape holding members 30 provided along each of the edges of the pair of side portions 14, and the center portions of the pair of edge shape holding members 30. And a bridging member 40.

As the material of the first leak preventer 10, a material generally used as a back sheet can be used. Specifically, for example, a resin film such as PE, PP, PET, and EVA; and a body fluid impermeable sheet such as a foamed sheet of the resin can be used. As the body fluid impermeable sheet, a material having air permeability such as an air permeable film is also preferably used.
Moreover, when using the film of the said resin, in order to improve a touch and an external appearance, it can also be used as a multilayer sheet | seat of a film and a nonwoven fabric. In this case, as the nonwoven fabric, SB, SMS, thermal bond nonwoven fabric and the like having a relatively low basis weight are preferably used.
Also, a multilayer sheet of the resin film and a sheet-like absorber described later can be used.
A highly water-resistant nonwoven fabric can also be used. In this case, you may use independently and can also be used as a multilayer sheet | seat of a film and a highly water-resistant nonwoven fabric.

  The first leak preventer 10 may be composed of a plurality of members.

As described above, the first leak preventer 10 includes the bottom surface portion 12 and the pair of side portions 14. In FIG. 1, the pair of side portions 14 are bent at an acute angle from the bottom surface portion 12, but are not particularly limited as long as the rising edges are bent inward from the left and right sides of the bottom surface portion 12.
An inner space S is formed by the bottom surface portion 12 and the pair of side portions 14. In the internal space S, the absorber 20 is arranged.

The absorbent body 20 used in the present invention is not particularly limited as long as it contains a highly water-absorbent resin and can absorb body fluids. For example, powdered absorbent bodies such as powdered wood pulp and unprocessed SAP However, a sheet-like absorbent body is preferable in consideration of form stability, possibility of dropping off, and the like. Especially, the sheet-like absorber formed by coating the said highly water-absorbent resin on a nonwoven fabric is preferable.
The kind of absorber can be suitably selected according to a use. For example, when the absorbent article of the present invention is used as a diaper for children, as a product for newborns or infants with a low age (in terms of size, S size), a material having a high content of wood pulp is preferable. For infants with a high age (in terms of size, M size or L size), those having a high SAP content are preferred.

Among the sheet-like absorbent bodies, one preferred embodiment is a superabsorbent sheet containing SAP of 50% by mass or more, preferably 60 to 95% by mass.
The highly water-absorbent sheet is an ultrathin sheet-like absorbent body mainly composed of SAP. The superabsorbent sheet has a very small thickness because the SAP content is extremely high. The thickness of the superabsorbent sheet is preferably 1.5 mm or less, and more preferably 1 mm or less.
As long as the superabsorbent sheet is an ultra-thin sheet-like absorbent body mainly composed of SAP, the configuration and the production method are not particularly limited.
For example, a super absorbent sheet obtained by the Air Laid method can be mentioned. The Air Laid method is a method in which pulverized wood pulp and SAP are mixed, a binder is added, and the resultant is formed into a sheet shape to obtain a highly water-absorbent sheet. As a highly water-absorbent sheet obtained by this method, for example, NOVATHIN (registered trademark) manufactured by Rayonier in the United States and B-SAP manufactured by Oji Kinocross are known.
Moreover, the superabsorbent sheet obtained by the method of coating SAP dispersion | distribution slurry on body fluid permeable sheets, such as a nonwoven fabric, is also mentioned. Here, it is preferable that the SAP dispersion slurry is obtained by dispersing SAP and microfibrillated cellulose (MFC) in a mixed solvent of water and ethanol. As a highly water-absorbent sheet obtained by this method, MegaThin (registered trademark) manufactured by Japan Absorbent Technology Laboratory is known, for example.
In addition, for example, a superabsorbent sheet obtained by a method in which a large amount of SAP is supported on a raised nonwoven fabric and fixed with a hot melt binder, emulsion binder, aqueous fiber, etc., and fibrous SAP is mixed with PET (polyethylene terephthalate) fiber And a superabsorbent sheet obtained by a method of forming a web, and a SAP sheet in which the top and bottom of the SAP layer are sandwiched between tissues.

At least one layer of the absorber is arranged. That is, the absorber may be a single layer or two or more layers (multiple layers).
The absorber can also be arranged in a folded state.

  A pair of edge shape holding members 30 are provided at the edges of the pair of side portions 14 along the edges. In FIG. 1, the edge shape holding member 30 is provided along the entire length of the edge, but in the present invention, the edge shape holding member 30 is not particularly limited thereto. The holding member may not be provided.

The edge shape holding member 30 has a function of holding the shape of the edge part of the side part and closely attaching the edge part to the wearer's body. This effectively prevents urine and feces from leaking outside the first leak preventer 10. In addition, it is possible to prevent uneven and large irregularities from occurring on the side portion when worn.
The material of the edge shape holding member 30 preferably has cushioning properties (elasticity) and a certain thickness. For example, a foam (for example, PU, PP, made by PP / EVA), a synthetic rubber sheet, a stretchable elastic film, a rubber filament, and a polyurethane filament are preferably exemplified. Also, cushioning and a certain thickness can be achieved by forming a gather with rubber thread and turning it back.

Furthermore, a bridging member 40 is provided between the central portions of the pair of edge shape holding members 30.
The bridging member 40 has a function of keeping the distance constant by connecting between the pair of edge shape holding members 30. As a result, there is less room to extend left and right like conventional inner gathers or outer gathers so that the bottom surface portion 12 of the first leak preventer 10 and the body surface of the wearer can contact only a relatively narrow range. Therefore, the lower body due to urine discharge, particularly the front part thereof, is less wet, and the buttocks are less likely to become dirty due to fecal discharge.
In order to obtain such an effect, it is preferable to appropriately define the distance L ₁ between the pair of edge shape holding members 30. For example, in the case of men, the distance is preferably such that the penis and the testicle are accommodated in the internal space S. For women, it is preferable to set the distance so that the large labia are accommodated in the internal space S. In any case, it is preferable that there is little remainder in the left-right direction of the internal space S.

  The material of the bridging member 40 is not particularly limited as long as it can maintain a certain degree of the shape of the absorbent article in the left-right direction. For example, foams such as PE, PP, and polyurethane, and those coated with a fiber bundle such as a slicer and a hydrophobic nonwoven fabric are preferable. The bridging member 40 is preferably thick enough to exhibit cushioning properties.

The length L ₂ in the front-rear direction of the bridging member 40 is not particularly limited for male use, but is 10 to 70 mm for female use because it needs to be shorter than the distance between the wearer's urethral orifice and anus. Is preferred. For children, it is preferably 5 to 40 mm.

The presence form of the pair of side portions and the edge shape holding member of the first leak preventer is not particularly limited.
FIG. 2 is a schematic plan view showing absorbent articles having various shapes. In FIGS. 2A to 2D, the absorber is omitted. The presence forms of the pair of side portions and the edge shape holding member of the first leak preventer can be, for example, the forms shown in FIGS. 2 (A) to 2 (D).
In the absorbent article 100a shown in FIG. 2 (A), the pair of side portions 14a and the edges of the first leak preventer 10a are short so that the distance between the edges of the side portions 30a is short at the center and long at the front and rear. A part shape holding member 30a is configured.
In the absorbent article 100b shown in FIG. 2 (B), the pair of sides of the first leak preventer 10b is such that the distance of the edge of the side portion 30b is constant and short from the center to the front and is long from the rear. The portion 14b and the edge shape holding member 30b are configured.
In the absorbent article 100c shown in FIG. 2C, the pair of side portions 14c and the edges of the first leak preventer 10c are arranged such that the distance between the edges of the side portions 30c is longer at the center portion and shorter at the front and rear. A part shape holding member 30c is configured.
In the absorbent article 101 shown in FIG. 2D, the pair of side portions 15 and the edge portions of the first leak preventer 11 are arranged such that the distance between the edge portions of the side portion 30d is long at the front and short at the rear. A shape holding member 30d is configured.

FIG. 14 is a schematic lateral end view showing various forms of absorbent articles. In FIG. 14 (A) to FIG. 14 (C), the absorber is omitted. The form of the edge shape holding member of the first leak preventer can be, for example, each shape shown in FIGS. 14 (A) to 14 (C).
In the absorbent article 101a shown in FIG. 14 (A), the pair of side portions 15a of the first leak preventer 11a is integrated with an edge shape holding member 31a made of gathers made of thread rubber. . A bridging member 41a is provided between the pair of edge shape holding members 31a.
In the absorbent article 101b shown in FIG. 14 (B), the pair of side portions 15b of the first leak preventer 11b is formed in a fold shape folded in two stages, and the uppermost portion is made of thread rubber. It is integrated with the edge shape holding member 31b made of gathers. A bridging member 41b is provided between the pair of edge shape holding members 31b.
In the absorbent article 101c shown in FIG. 14C, the pair of side portions 15c of the first leak preventer 11c is folded outward at the uppermost portion, and the folded portions are formed of thread rubber. It is integrated with the edge shape holding member 31c made of gathers. A bridging member 41c is provided between the pair of edge shape holding members 31c.

The position and shape of the bridging member are not particularly limited.
FIG. 3 is a schematic view showing an absorbent article having various shapes of cross-linking members. 3A is a plan view, FIG. 3B is a lateral end view taken along line IIIB-IIIB in FIG. 3A, and FIG. 3C is a plan view. (D) is a lateral end view along line IIID-IIID in FIG. 3 (C), FIG. 3 (E) is a plan view, and FIG. 3 (F) is IIIF- in FIG. 3 (E). It is a lateral end view along line IIIF. In FIGS. 3A to 3F, the absorber is omitted. The position and shape of the bridging member can be, for example, the shapes shown in FIGS. 3 (A) to 3 (F).

In the absorbent article 100d shown in FIGS. 3A and 3B, the bridging member 40d provided between the central portions of the pair of edge shape holding members 30 is the edge shape holding member. In the state of being in contact with the upper surface of 30, it reaches the both end portions of the first leak preventer 10 d.
In the absorbent article 100e shown in FIGS. 3C and 3D, the first leak preventer 10e has the same shape as the first leak preventer 10d. In the absorbent article 100e, the first leakage preventing member 40e provided between the center portions of the pair of edge shape holding members 30 is in contact with the lower surface of the edge shape holding member 30. It has reached to both ends of the body 10e.
In the absorbent article 100f shown in FIGS. 3E and 3F, the first leak preventer 10f has the same shape as the first leak preventer 10d. In the absorbent article 100f, the first bridging member 40d provided between the center portions of the pair of edge shape holding members 30 is in contact with the upper surface and the lower surface of the edge shape holding member 30. It reaches the vicinity of both end portions of the leak preventer 10f.

In the absorbent article of the present invention, the internal space is separated into the front urine absorption space and the rear stool storage space by combining the bridging member with the bottom surface portion and the pair of side portions, An absorber is disposed in the urine absorption space.
FIG. 4 is a schematic view showing an example of the absorbent article of the present invention. 4A is a plan view, FIG. 4B is a vertical end view taken along the line IVB-IVB in FIG. 4A, and FIG. 4C is a view in FIG. It is a lateral end view along the IVC-IVC line.
In the absorbent article 100g shown in FIG. 4, the bridging member 40g is coupled to the bottom surface portion 12 and the pair of side portions 14d via the coupling member 50, so that the internal space S becomes the front urine absorption space S _1. And the rear stool storage space S _2, and the absorber 20 a is disposed in the urine absorption space S ₁ .
Examples of the bonding member 50 include an adhesive, rubber, film, foam (foam), and bulky nonwoven fabric.
By separating the internal space S into the urine absorption space S ₁ and the stool storage space S ₂ as described above, the urine / feces separation process can be performed. As a result, it is possible to eliminate problems such as mixing of urine and feces, increasing the odor and facilitating rash. The separation between the urine absorption space S ₁ and the stool storage space S ₂ is preferably complete as in the embodiment shown in FIG. 4, but even if the two are connected, the portion is small. Alternatively, if an absorber that does not easily diffuse urine is used, urine / feces separation processing can be substantially performed.

In this case, it is one of the preferred embodiments that the stool storage space is provided with a sheet-like second leak preventer.
FIG. 5 is a schematic diagram illustrating an example of an absorbent article having a second leak preventer. 5A is a plan view, and FIG. 5B is a vertical end view taken along the line VB-VB in FIG. 5A.
Absorbent article 100h shown in FIG. 5, is basically the same as the absorbent article 100 g, it differs in that it has a second leak preventer 60 sheet stool accommodating space S _2. In this case, feces can be accommodated on the second leak preventer 60.

Moreover, the absorbent article 100h shown in FIG. 5 has a urine stop member 42 and a stool stop member 44 at the front and rear ends of the upper surface of the bridging member 40g. The urine stop member 42 prevents the urine discharged into the urine absorption space S _{1 from} moving to the stool storage space S ₂ , and the stool stop member 44 includes the stool discharged into the stool storage space S _2. but, to prevent the move to the space S ₁ for urine absorption. By the urine stop member 42 and the stool stop member 44, the urine / feces separation process is more effectively performed.
In the embodiment shown in FIG. 5, the second leak preventer is planar, but the shape of the second leak preventer is not particularly limited. For example, the length and position in the front-rear direction and the length in the left-right direction are not particularly limited. Specifically, the shape which is the container shape which the edge part has lifted to the upper side is mentioned suitably. In this case, the stool is easily accommodated on the second leak preventer.

Moreover, it is one of the preferable aspects that the absorber is further arrange | positioned between the 1st leak preventer and the 2nd leak preventer in the space for stool accommodation.
FIG. 6 is a schematic diagram illustrating another example of an absorbent article having a second leak preventer. 6A is a plan view, and FIG. 6B is a vertical end view taken along the line VIB-VIB in FIG. 6A.
Absorbent article 100i shown in FIG. 6, is basically the same as the absorbent article 100h, the feces receiving space S _2, between the first leak preventer 10g and the second leak preventer 60, Absorber 20b is arranged. In this case, basically, when the stool is soft stool while the stool is accommodated on the second leak preventer 60, the moisture can be absorbed by the absorber 20b, so that the stool (soft stool) leaks outside. Can be prevented.
In the embodiment shown in FIG. 6, the absorber disposed in the urine processing space and the absorber disposed in the stool storage space are separated, but they may be integrated.

Moreover, in the absorbent article of the present invention, it is one of preferred embodiments that the absorbent body is disposed so as to be separated from the left and right.
FIG. 7 is a schematic diagram illustrating another example of the absorbent article. 7A is a lateral end view before wearing, FIG. 7B is a lateral end view when worn, and FIG. 7C is a lateral end view immediately after urine discharge.
The absorbent article 100l shown in FIG. 7 is basically the same as the absorbent article 100, but differs in that the absorbent body 20d is spaced apart from the left and right. Thereby, the following effects are acquired.
First, deformation at the center in the left-right direction is facilitated (see FIG. 7B). For this reason, it becomes easy for the wearer to wear the absorbent article at an appropriate position.
Second, due to the above deformation, urine discharged to the central portion easily moves to the left and right and the rear side, and is thus easily absorbed by the absorber.
Third, since there is no absorber in the wearer's crotch, the wearer does not feel uncomfortable at the crotch, especially after absorbing urine.
Fourth, since there is no absorber in the wearer's crotch, problems such as rashes and stuffiness are less likely to occur.
Fifthly, as shown in FIG. 7C, since there is no absorber in the central part in the left-right direction, immediately after urine discharge, the discharged urine u is temporarily stored in the central part, and then Since it can be gradually absorbed by the left and right absorbers (see arrows in the figure), even when a large amount of urine is excreted in a short time, urine can be efficiently absorbed. .

Furthermore, it is preferable that the liquid guide sheet is disposed between the absorbent bodies that are spaced apart from each other on the left and right.
FIG. 8 is a schematic diagram illustrating an example of an absorbent article having a liquid guide sheet. FIG. 8A is a lateral end view before wearing, and FIG. 8B is a lateral end view when worn.
The absorbent article 100m shown in FIG. 8 is basically the same as the absorbent article 100l, but the liquid guide sheet 80 is disposed between the absorbent bodies that are spaced apart from each other on the left and right. .
The liquid guide sheet 80 has a flow path for moving urine. The urine discharged from the wearer's urethral orifice to the central portion in the left-right direction of the first leak preventer passes through the flow path of the liquid guide sheet 80 and quickly moves to the absorber 20d. Therefore, the wearer does not feel uncomfortable in the crotch.
Moreover, it is preferable that the liquid guide sheet 80 enables the urine to move between the absorbent bodies 20d that are spaced apart from each other on the left and right.
When using the absorbent article, the amount of urine absorbed by the left and right absorbent bodies may be significantly biased depending on the posture of the wearer, the wearing position, and the like. In such a case, when the absorbent article of the present invention has a liquid guide sheet, the urine moves from the absorber that has absorbed a large amount of urine to the less, and as a result, the bias is alleviated. Thereby, the substantial urine absorption amount and usable time of an absorbent article become long.

  The liquid guide sheet 80 is not particularly limited as long as it has a flow path that allows urine to move, but it is preferable that the liquid guide sheet 80 does not have body fluid absorbability or body fluid retention because urine moves quickly. . Specifically, a concavo-convex sheet member (hereinafter referred to as an “open / recessed concavo-convex sheet member”) having an opening in a convex portion to be described later is preferably exemplified.

FIG. 9 is a schematic perspective view showing an example of an apertured uneven sheet member having apertures in all of the convex portions. The liquid guide sheet 80, which is an aperture uneven sheet member shown in FIG. 9, has a large number of projections 81 that form convex portions, and each projection 81 has an aperture 82 at its apex. In the apertured concavo-convex sheet member, a part of the convex part may have an aperture, or the whole convex part may have an aperture.
The perforated concave-convex sheet member has a concave-convex surface having a concave portion and a convex portion as at least one surface. In the perforated concave-convex sheet member, a large number of concave portions are connected to function as a body fluid flow path. The perforated uneven sheet member has the advantage that the flow of body fluid is not hindered even if the convex portion is somewhat collapsed during use.
Further, in the apertured uneven sheet member, the aperture also functions as a body fluid flow path.
In the present invention, it is preferable to use the apertured concave-convex sheet member with the wider side of the aperture (the surface not visible in FIG. 9) facing the wearer.

Examples of the material of the apertured uneven sheet member include a body fluid impermeable film made of a resin such as PE, PP, PVA, and urethane.
Specific examples of the apertured concavo-convex sheet member include those proposed by the present inventor in WO 02/065965.

  When an apertured uneven sheet member is used as the guide sheet, a body fluid remains in the aperture, a liquid residue is generated, and so-called rewetting value may be deteriorated. In this case, it is preferable to use a hydrophilic diffusion sheet in combination on the lower side of the apertured uneven member. Thereby, since the bodily fluid which exists in an opening | penetration osmose | permeates a hydrophilic diffusion sheet and moves, a rewet value becomes low significantly. Moreover, it is prevented that the apertured uneven sheet member is displaced from the leak preventer, and the shape stability is also improved.

As the hydrophilic diffusion sheet, a hydrophilic nonwoven fabric having a relatively low basis weight is preferably used. Examples of the hydrophilic nonwoven fabric include tissue or hydrophilic nonwoven fabric containing rayon, cotton, wood pulp and the like. Specific examples include tissue paper, rayon spunbond (for example, TCF, manufactured by Futura Chemical), cotton spunlace, rayon / PP mixed spunlace, and rayon / PET mixed spunlace.
Further, non-woven fabrics made hydrophilic by surface-treating synthetic nonwoven fabrics such as PP, PE or PET spunbond nonwoven fabrics, PP thermal pound nonwoven fabrics, and PE / PET through-air nonwoven fabrics with a surfactant or the like.
The apertured concavo-convex sheet member and the hydrophilic diffusion sheet may be simply overlapped and laminated, or may be combined by hot melt, thermal lamination, or the like.

It is preferable to use a bodily fluid impermeable sheet in combination under the hydrophilic diffusion sheet. Thereby, the body fluid is not temporarily stored between the hydrophilic diffusion sheet and the sheet portion of the leak preventer, and quickly moves to the bag portion of the leak preventer. Examples of the material for the body fluid impermeable sheet include films made of resins such as PE, PP, PVA, and urethane.
The hydrophilic diffusion sheet and the body fluid impermeable sheet may be simply stacked and laminated, or may be combined by hot melt, thermal lamination or the like.
Moreover, you may use combining a hole uneven | corrugated sheet | seat member and a bodily fluid impermeable sheet | seat, without using a hydrophilic diffusion sheet.
The perforated uneven sheet member and the body fluid impermeable sheet may be simply overlapped and laminated, or may be combined by hot melt, thermal lamination or the like.

  In FIG. 8, the liquid guide sheet 80 is disposed on the lower side of the absorbent body 20d, but the liquid guide sheet may be disposed on the upper side or may be disposed on both the upper side and the lower side. .

Furthermore, when the absorbent body is a sheet-like absorbent body formed by coating a non-woven fabric with a superabsorbent resin, the non-woven fabric is preferably formed into a tube shape with the side coated with the superabsorbent resin being the inner side. This is one of the embodiments.
FIG. 10 shows an example of a sheet-like absorbent body (hereinafter referred to as “tubular absorbent body”) formed into a tube shape with the non-woven fabric coated with a highly water-absorbent resin as the inside, and an absorbent article using the same. It is a schematic diagram shown. 10 (A) to 10 (C) are lateral end views of the tubular absorbent body, and FIGS. 10 (D) to 10 (F) are lateral end views of absorbent articles using the tubular absorbent body. 10 (A) and 10 (D) are before urine absorption, FIG. 10 (B) and FIG. 10 (E) are in the early stage of urine absorption, and FIG. 10 (C) and FIG. 10 (F) are urine absorption. Late.
A tubular absorbent body 20e shown in FIGS. 10 (A) to 10 (C) is formed by coating a highly absorbent resin 24 on a nonwoven fabric 22 in a plurality of strips that are long in the front-rear direction. The tubular absorbent body 20e shown in FIG. 10 has a shape close to a plane before urine absorption (see FIG. 10A), but becomes closer to a cylindrical shape as urine is absorbed (FIG. 10 ( (See B) and FIG. 10C.)
The absorbent article 100n shown in FIGS. 10D to 10F is basically the same as the absorbent article 100l, but differs in that a tubular absorbent body 20e is used. In the absorbent article 100n, when the tubular absorbent body 20e absorbs urine, a space is formed in the central portion in the left-right direction (see FIG. 10F). Thereby, urine becomes easy to move to the back side. Moreover, since a wearer's crotch part and a 1st leak preventer become difficult to contact, a wearer's discomfort becomes less.

Moreover, in the absorbent article of the present invention, it is one of preferred embodiments that the pair of side portions is formed in a pleat shape folded in two or more stages.
FIG. 11 is a schematic lateral end view showing another example of the absorbent article according to the present invention. In FIG. 11, elements other than the first leak preventer and the absorber are omitted. In FIG. 11, a white member is a first leak preventer, and a hatched member is an absorber.
In the absorbent article shown in FIG. 11, the pair of side portions of the first leak preventer are each formed in a pleat shape folded in two stages. Thereby, since the volume of the space which the 1st leak preventer can form becomes large, the amount of absorbers can be increased and the amount of absorption of urine can be increased.

When the pair of side portions are each formed in a pleat shape folded in two or more steps, the absorber is disposed in at least two of the two or more step spaces defined by the pair of side portions. Is a preferred embodiment.
FIG. 12 is a schematic lateral end view showing another example of the absorbent article according to the present invention. In FIG. 12, elements other than the first leak preventer and the absorber are omitted. In FIG. 12, the white member is the first leak preventer, and the hatched member is the absorber.
The absorbent article shown in FIG. 12 (A) to FIG. 12 (D) is basically the same as the absorbent article shown in FIG. 11, but each in a two-stage space defined by a pair of side portions. It differs in that the absorber is arranged. Thus, having two or more stages of absorbers increases the ability to absorb urine.
In the absorbent article shown in FIG. 12A, an integral absorbent body is arranged on both the upper and lower stages. In the absorbent article shown in FIG. 12 (B), the upper part is arranged with the absorbers spaced apart from each other on the left and right, and the lower part is provided with an integral absorbent body. In the absorbent article shown in FIG. 12 (C), the upper part is provided with an integral absorbent body, and the lower part is provided with an absorbent body spaced apart on the left and right. In the absorbent article shown in FIG. 12D, the upper and lower tiers are arranged such that the absorbent bodies are separated from each other on the left and right.
As shown in FIGS. 12B to 12D, when some or all of the absorbers are spaced apart from each other in the left-right direction, some or all of the effects in the absorbent article 100l described above can be obtained. .

In the absorbent article according to the present invention, the opening of the first leak preventer is further closed by coupling to the bottom part of the first leak preventer and the portion extending from the front ends of the pair of side parts to the front side of the upper part. A front leak preventer and / or an opening on the rear side of the first leak preventer coupled to a bottom surface portion of the first leak preventer and a portion from the rear end of the pair of side portions to the rear side of the upper portion. It is one of the preferable embodiments to include a rear leak preventer that closes.
FIG. 13 is a schematic diagram illustrating an example of an absorbent article including a front leak preventer and a rear leak preventer. 13A is a plan view, FIG. 13B is a vertical end view along line XVB-XVB in FIG. 13A, and FIG. 13C is in FIG. FIG. 13D is a lateral end view along the line XVC-XVC, and FIG. 13D is a lateral end view along the line XVD-XVD in FIG.
The absorbent article 100o shown in FIG. 13 is basically the same as the absorbent article 100, but is different in that it further includes a front leak preventer 90 and a rear leak preventer 92.

  As shown in FIG. 13, the front leak preventer 90 is coupled to the bottom surface portion 12 of the first leak preventer 10 and the portion from the front end of the pair of side portions 14 to the front side of the upper portion, The front opening of the body 10 is closed. The rear leak preventer 92 is coupled to the bottom surface portion 12 of the first leak preventer 10 and a portion from the rear end of the pair of side portions 14 to the rear side of the upper portion, The side opening is closed.

In the standing and sitting position, the absorbent article 100 of the present invention is worn in a U-shaped state in which the front side and the rear side are up and the center is down, so that urine and feces leak from the front and rear openings. There is almost no leakage, but there is a risk of leakage in the supine and prone positions.
In the absorbent article 100o of the present invention, the front leak preventer 90 and the rear leak preventer 92 are combined with the first leak preventer to form a bag. Thereby, the front leak preventer 90 has the discharged urine and feces (if the internal space is separated into the front urine absorption space and the rear stool storage space, urine) first Leakage from the front opening of the leak preventer 10 is prevented. In addition, the rear leak preventer 92 prevents the discharged urine and stool (if the internal space is separated into the front urine absorption space and the rear stool storage space) from the first prevention Leakage to the outside is prevented from opening after the leaking body 10.

As in the case of the pair of side portions of the first leak preventer 10, the front leak preventer 90 and the rear leak preventer 92 are one of the preferred embodiments having an edge shape holding member at the edges thereof. When the edge shape holding member is provided, urine and feces are more difficult to leak. In this case, the edge shape holding member may be separate from the edge shape holding member of the first leak preventer 10, and the edge shape holding member 30 of the first leak preventer 10 is extended. There may be.
Further, as shown in FIG. 13, the front leak preventer 90 and the rear leak preventer 92 are configured to cover the pair of side portions 14 and the edge shape retaining member 30 of the first leak preventer 10 from above. In the case where it is worn, the effect of preventing the front side and the rear side of the side portion from turning up when worn is also achieved.

In the absorbent article of the present invention, the pair of side portions of the first leak preventer may be composed of two or more materials.
FIG. 15 is a schematic lateral end view showing an example of an absorbent article whose side portion is made of two or more kinds of materials. In FIG. 15A and FIG. 15B, the absorber is omitted.
The absorbent article 100p shown in FIG. 15 (A) is basically the same as the absorbent article 100l, but an elastic body 16a is provided inside the pair of side portions 14e of the first leak preventer 10h. ing. The elastic body 16a is richer in elasticity than the surrounding material. Thereby, adhesiveness with a wearer's body surface becomes a more excellent thing.
In the absorbent article 100q shown in FIG. 15 (B), the pair of side portions 14f of the first leak preventer 10i are each formed in a pleat shape folded in two stages, and an elastic body is provided inside the upper stage. 16b is provided. The elastic body 16b is richer in elasticity than the surrounding material. Thereby, adhesiveness with a wearer's body surface becomes a more excellent thing.
As described above, by configuring the pair of side parts of the first leak preventer with two or more materials, the elasticity of the side parts is adjusted, and the adhesion with the body surface of the wearer is more excellent. Can be a thing.
Moreover, even if it is the same raw material, the same effect can be acquired by comprising a side part by different tension | tensile_strength.

  Hereinafter, more specific embodiments will be described and described in detail.

FIGS. 16-18 is a schematic diagram which shows the absorber article | item of this invention made into the aspect of a tapeless type diaper. 16 is a perspective view showing a state when worn, FIG. 17 is a plan view in which the coupling portion 227b in FIG. 16 is separated and opened, and FIG. 18 (A) is a line XXIIIA-XXIIIA in FIG. FIG. 18B is a lateral end view taken along line XXIIIB-XXIIIB in FIG. 17.
The absorbent article 310 shown in FIG. 16 has a shape of a pant having one waist hole W and two leg holes LH in which the front body and the back body are coupled by the coupling portion 227b.

The first leak preventer 202b rises on the left and right sides to form a side portion 213b, and the side portion 213b is folded back to the inside. An edge shape holding member 214b is provided over substantially the entire length at the edge of the side portion 213b of the first leak preventer 202b.
When the absorbent article of the present invention is worn, the front part of the edge shape holding member 214b is located on both sides of the urethral opening, and the upper surface thereof is in contact with the wearer's body so that the absorbent article is elastic. To prevent the urethral orifice from coming into direct contact with the absorbent article, or to avoid applying strong pressure to the urethral orifice even if contacted. By doing in this way, the feeling of pressure to the urethral opening at the time of wear can be eliminated. Further, since the space formed between the two edge shape holding members 214b serves as a flow path for urine, the urethra mouth of the wearer and its surroundings are only wetted, and the urine is discharged without wetting other parts. be able to.
In addition, on the front side of the absorbent article 310, genitals are accommodated between the two edge shape holding members 214b, thereby preventing urine from leaking to the outside. On the rear side of the absorbent article 310, the peripheral form retaining material 68 comes into close contact with the wearer's skin along the roundness of the buttocks, and even if stool, particularly soft stool is discharged, it is prevented from leaking outside. Is done. As a result, inner gathers and outer gathers are unnecessary. However, you may have these.
A stool processing sheet 221b is provided at the rear of the internal space of the first leak preventer 202b.

A bridging member 207b is provided near the center in the front-rear direction, and the front side thereof is a urine absorption space S ₁ and the rear side is a stool absorption space S ₂ . In the absorbent article 300, the bridging member 207a is disposed on the edge shape holding member 214a, whereas in the absorbent article 310, the left and right ends of the bridging member 207b are below the edge shape holding member 214b. It is arranged to be.
The bridging member 207b has a rod-shaped urine stop portion 208b and a stool stop portion 209b each having a substantially elliptical cross section. The urine stop portion 208b is inclined forward to prevent urine from moving to the rear side. The stool stop 209b is inclined rearward to prevent the stool from moving forward. The urine / feces stop member 207b is provided over substantially the entire width of the first leak preventer 202b in the left-right direction.
The lower surface of the bridging member 207b and the first leak preventer 202b are coupled by a coupling portion 217b. In addition, a part of the upper surface of the bridging member 207b, the side portion 213b of the first leak preventer 202b, and the lower surface of the edge shape holding member 214b are coupled by the coupling portion 217b. The coupling part 217b can be formed by an adhesive such as a heat-sensitive adhesive, for example.
Thus, the internal space of the first leak preventer 202b includes a space S ₁ and feces absorbing space S ₂ for urine absorption are independent of each other. Thereby, separation of urine and feces can be performed almost completely. The urine absorbing space S ₁ is disposed absorber 203b, the feces absorbing space S ₂ is disposed fly processing sheet 221b.

A skin contact sheet 205b is provided on the absorber 203b. When the skin contact sheet 205a is provided, the surface feel when worn becomes excellent. The skin contact sheet is not particularly limited as long as it is permeable to body fluids, and a known one that has been conventionally used as a top sheet can be used. Specifically, for example, a nonwoven fabric of synthetic fibers such as a PP nonwoven fabric, a PET nonwoven fabric, and a PE nonwoven fabric can be used. A dry nonwoven fabric obtained by mixing hydrophilic fibers such as rayon and cotton and synthetic fibers can also be used. The skin contact sheet 205b covers the upper surface from a position on the front side of the front end of the absorber 203b to a position on the rear side of the rear end.
An outer member made of a nonwoven fabric is provided outside the side portion of the first leak preventer 202b. Waist gathers 212b are provided at both front and rear ends of the outer member.

In the absorbent article of the present invention, the second leak preventer can be detachable. In this case, after receiving the stool, the second leak preventer can be removed and discarded. And an unused 2nd leak preventer can be mounted | worn and used again. Moreover, it can also be used as a normal diaper which is not equipped with an unused second leak preventer and does not separate urine and feces.
Similarly, when the absorbent article of the present invention has a stool processing sheet, the stool processing sheet can be attached and detached. Then, an unused stool processing sheet can be attached and used again. Further, it can be used without attaching an unused stool processing sheet.

  The structure which makes a 2nd leak preventer etc. detachable is not specifically limited. For example, a mode in which only the stool processing sheet is removable, a mode in which only the second leak preventer is removable (when there is no stool processing sheet), a second leak preventer and a urine / feces stop member are detachable A certain aspect and the aspect which can attach or detach the 2nd leak preventer, a urine / feces stop member, and a urine introduction part formation member are mentioned. When the urine / feces stop member is detachable, only a part thereof (for example, the urine stop portion or the stool stop portion) may be detachable, or all of the urine / feces stop member may be detachable.

  These detachable members may be detachable independently or may be detachable integrally.

As mentioned above, although the absorber article of the present invention was explained based on each embodiment of illustration, the present invention is not limited to these, for example, the composition of each part is arbitrary which can exhibit the same function Can be replaced with configuration.
Moreover, it can also be set as another embodiment by combining arbitrarily the structure of each part in each embodiment.

  The absorbent article of the present invention is suitably used for any use for adult men, adult women, and children.

It is a schematic diagram which shows the example of an absorbent article. It is a typical top view showing absorber articles of various forms. It is a schematic diagram which shows the absorbent article which has a bridge member of various shapes. It is a schematic diagram which shows the example of the absorber article | item of this invention. It is a schematic diagram which shows the example of the absorber article | item which has a 2nd leak preventer. It is a schematic diagram which shows the other example of the absorber article | item which has a 2nd leak preventer. It is a schematic diagram which shows the other example of an absorbent article. It is a schematic diagram which shows the example of the absorber article | item which has a liquid guide sheet. It is a typical perspective view which shows the example of the apertured uneven | corrugated sheet | seat member which has an aperture in all the convex parts. It is a schematic diagram which shows the example of a tubular absorber and an absorbent article using the same. It is a typical horizontal end view which shows the other example of the absorber article | item of this invention. It is a typical horizontal end view which shows the other example of the absorber article | item of this invention. It is a schematic diagram which shows the example of the absorber article | item which comprises a front leak preventer and a back leak preventer. It is a typical horizontal end view which shows the absorbent article of various forms. It is a typical horizontal end view which shows the example of the absorber article | item from which the side part is comprised from 2 or more types of materials. It is a schematic diagram which shows the absorber article | item of this invention made into the aspect of a tapeless type diaper. It is a schematic diagram which shows the absorber article | item of this invention made into the aspect of a tapeless type diaper. It is a schematic diagram which shows the absorber article | item of this invention made into the aspect of a tapeless type diaper.

10, 10a to 10i, 11, 11a to 11c, 202b First leak preventer 12 Bottom face part 14, 14a to 14f, 15, 15a to 15c, 213b Side part 16a, 16b Elastic body 20, 20a, 20b, 20d, 203b Absorbent body 20e Tubular absorbent body 22 Non-woven fabric 24 Superabsorbent resin 30, 30a-30d, 31a-31c, 214b Edge shape holding member 40, 40a-40g, 41, 41a-41c, 207b Cross-linking member 42, 208b Urine stop Part 44, 209b Stool stop part 50, 50a, 217b Connecting member 60 Second leak preventer 80 Guide sheet 90 Front leak preventer 92 Rear leak preventer

100, 100a to 100i, 100k to 100q, 101, 101a to 101c, 310 Absorbent article 205b Skin contact sheet 212b Waist gather 221b Stool processing sheet 227b Joining portion LH Leg hole S Internal space S ₁ Urine absorption space S ₂ Stools Space for accommodation W West Hall u Urine

Claims (13)

A bottom surface portion and a pair of side portions that rise upward from the left and right sides of the bottom surface portion and are bent so that the edge portion is on the inside, and the inner space is formed by the bottom surface portion and the pair of side portions A sheet-like first leak preventer,
An absorbent body containing at least one layer in the internal space and containing a superabsorbent resin and capable of absorbing bodily fluids;
A pair of edge shape holding members, which are provided along each of the edge portions of the pair of side portions, hold the shape of the edge portion, and closely attach the edge portion to the wearer's body ;
An absorbent article comprising a bridging member provided between the central portions of the pair of edge shape holding members,
When the bridging member is coupled to the bottom surface portion and the pair of side portions, the internal space is separated into a front urine absorption space and a rear stool storage space, and the urine absorption space An absorbent article in which the absorber is disposed.   The absorbent article according to claim 1, wherein the bridging member is in contact with an upper surface of the edge shape holding member.   The absorbent article according to claim 1 or 2, wherein the bridging member is in contact with a lower surface of the edge shape holding member.   The absorbent article according to any one of claims 1 to 3, further comprising a sheet-like second leak preventer in the feces accommodation space.   The absorbent article according to claim 4, wherein the absorbent body is disposed between the first leak preventer and the second leak preventer in the stool storage space.   The absorbent article according to any one of claims 1 to 5, wherein the pair of side portions are each formed in a pleat shape folded in two or more steps.   The absorbent article according to claim 6, wherein the absorbent body is disposed in at least two of two or more levels of spaces defined by the pair of side portions formed in a pleat shape.   Furthermore, the front leak preventer is coupled to the bottom portion of the first leak preventer and a portion extending from the front end of the pair of side portions to the front side of the upper portion and closes the front opening of the first leak preventer. And / or the bottom portion of the first leak preventer and the portion extending from the rear end of the pair of side portions to the rear side of the upper portion, and opening the rear side of the first leak preventer. The absorbent article according to any one of claims 1 to 7, further comprising a rear leak preventer that closes.   The absorbent article according to any one of claims 1 to 8, wherein the absorbent body is disposed so as to be separated from the left and right.   The absorbent article according to claim 9, wherein a liquid guide sheet is disposed between the absorbent bodies that are spaced apart from each other on the left and right.   The absorbent article according to any one of claims 1 to 10, wherein the absorbent body is a sheet-shaped absorbent body formed by coating the superabsorbent resin on a nonwoven fabric.   The absorbent body is disposed so as to be separated from the left and right, and the sheet-like absorbent body is formed in a tube shape with the side coated with the superabsorbent resin of the nonwoven fabric as an inner side. Item 12. The absorbent article according to Item 11.   The absorbent article according to claim 11 or 12, wherein the sheet-shaped absorber is a superabsorbent sheet containing 50% by mass or more of the superabsorbent resin and having a thickness of 1 mm or less.

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