JP5950371B2 - Disposable absorbent article - Google Patents

Description

The present invention relates to a disposable absorbent article, and more specifically, to a disposable diaper worn by itself, as well as a so-called pad disposed in a disposable diaper for adults or the like. Including cases.
And the disposable absorbent article of this invention concerns on the thing which can suppress separation | spacing with the skin surface of a wearer's lower abdominal part, and an absorber, and is hard to leak urine.

  When this type of disposable absorbent article is worn, the absorbent body disposed in the crotch portion is sandwiched between both legs. As a result, the deformation of the crotch part due to the sandwiching of the absorbent body often acts in the direction of separating the central region on the front body side of the absorbent body from the wearer's skin. In this state, if there is urination by the wearer, the separation between the center basin on the front body side of the absorbent body and the skin of the wearer is the main cause, and as a phenomenon that often occurs when the body is lying sideways, Urine leakage occurs.

  In the following Patent Document 1, a pad arrangement portion formed from front and back sheets excluding the core and extending in the vertical direction surrounded by the core is provided at the center in the lateral direction of at least the crotch region between the front and rear waist regions and the crotch region, Disclosed is a disposable absorbent article having a pair of first extension portions that are bifurcated from a rear end edge of the pad arrangement portion located on the side of the rear waist area and extending toward the tape fastener. According to the disposable absorbent article, when the diaper that fastens the free end of the tape fastener to the outer surface of the front waist area or during the wearing of the diaper that connects the front and back waist areas via the tape fastener, The placement portion extending toward the surrounding area is pulled, and the placement portion is tensioned to press the pad placed on the placement portion against the skin of the wearer. As a result, the pad can be brought into close contact with the wearer's skin during and during wearing, and there is no gap between the pad and the wearer's skin, and the pad is securely absorbed and retained. It can be made to.

Further, Patent Document 2 below discloses a diaper in which a portion of the central portion in the length direction is raised and a rubber thread is added.
Japanese Patent Laid-Open No. 2005-323585 JP 2001-224628 A

However, it is considered that the disposable absorbent article disclosed in Patent Document 1 has not yet solved the above-described problem due to the pad placed in the crotch portion being sandwiched between the legs.
Moreover, also about the diaper disclosed in Patent Document 2, the pad member is not in close contact with the skin surface of the wearer, and a gap is generated, which may cause leakage of urine.

  Then, the main objective of this invention is to provide the disposable absorbent article which can suppress separation | spacing with the skin surface of a wearer's lower abdominal part, and an absorber, and is hard to leak urine.

The present invention that has solved the above problems is as follows.
<Invention of Claim 1>
Disposable absorbent article comprising a liquid-permeable surface sheet that permeates body fluid, a liquid-impermeable sheet, and an absorbent body that has a cotton-like pulp that is interposed between them and absorbs body fluid that has permeated the surface sheet. In
The absorber has a lower layer absorber and an upper layer absorber disposed thereon,
As the upper layer absorber, it has a front upper layer absorber in the front body,
The front upper layer absorber has a V-shaped or U-shaped continuous wall portion constricted from the front side in the front-rear direction to the rear side at the rear edge of the front upper layer absorber,
The disposable absorbent article characterized in that the left and right inclined portions of the wall portion have an inclination along the wearer's left and right inguinal portions and are in a positional relationship in contact with the wearer's left and right inguinal portions.

(Function and effect)
It has a front upper layer absorber on the front body side. Since the front upper layer absorber provided on the front body side is located in the urination region, the amount of absorption can be increased as compared with the case where the front upper layer absorber is not provided.
When the disposable absorbent article according to the present invention is worn, the top sheet and liquid impermeability are secured by fastening the waist around itself, or by fastening the disposable diaper covering the outside from the outside in the case of a pad. The sheet is pulled from the center in the width direction to the left and right outer sides in the width direction. Originally, when receiving the force, the front upper layer absorber is pulled from the center in the width direction to the left and right outer sides in the width direction, so that the force in the direction in which the front upper layer absorber is in close contact with the skin side of the wearer acts, There should be little separation between the front upper absorbent body and the wearer's skin.
However, as a result of the crotch region of the absorbent body being sandwiched between both legs, the deformation of the crotch region that accompanies the sandwiching of the absorbent body often acts in the direction of separating the front upper layer absorbent body from the skin of the wearer. In this state, if there is urination by the wearer, the separation between the center basin on the front body side of the absorbent body and the skin of the wearer is the main cause, and as a phenomenon that often occurs when the body is lying sideways, This causes urine leakage.
However, according to the present invention, the front upper layer absorber has a wall portion that is substantially V-shaped or U-shaped and constricts toward the center in the front-rear direction. The meaning of having the wall portion means that the edge is cut even if the absorber does not exist on the rear side or the rear upper layer absorber exists.
In this way, only the front upper layer absorber is present, and only the wall portion is present, the rear upper layer absorber is not present on the rear side, or the rear upper layer absorber is present, the front upper layer absorber is Since the edge of the rear upper layer absorber is cut, the absorber is sandwiched between both legs, and the deformation of the crotch portion due to the sandwiching does not propagate to the front upper layer absorber side. As a result, the front upper-layer absorbent body is deformed so as to swell toward the wearer's skin while maintaining its shape substantially, so that separation between them can be suppressed, and the abdomen when the body is lying on its side Can prevent urine leakage from the side.
Moreover, since the left and right inclined portions of the wall portion correspond to the wearer's left and right groin portions, the front upper layer absorbent body between the wearer's left and right groin portions corresponds to the wearer's lower abdomen, and the skin surface and the disposable absorbent article Adhesion is improved and urine leakage is less likely to occur.

<Invention of Claim 2>
Disposable absorbent article comprising a liquid-permeable surface sheet that permeates body fluid, a liquid-impermeable sheet, and an absorbent body that has a cotton-like pulp that is interposed between them and absorbs body fluid that has permeated the surface sheet. In
The absorber has a lower layer absorber and an upper layer absorber disposed thereon,
As the upper layer absorber, having a front upper layer absorber located in the front body, and a rear upper layer absorber,
The front upper layer absorber has a V-shaped or U-shaped continuous wall portion constricted from the front side in the front-rear direction to the rear side at the rear edge of the front upper layer absorber,
The rear upper layer absorber is located on the rear side of the wall portion,
The disposable absorbent article characterized in that the left and right inclined portions of the wall portion have an inclination along the wearer's left and right groin portions and are in a positional relationship in contact with the wearer's left and right groin portions.

(Function and effect)
By providing the rear upper layer absorber, the absorption capacity is increased, and it can withstand long-time use. In this configuration, even if there is a rear upper layer absorber, the front upper layer absorber is cut off from the rear upper layer absorber, so that the rear upper layer absorber is sandwiched between both legs, and the rear upper layer absorption accompanying the sandwiching. Body deformation will not propagate to the front upper absorber side. As a result, the front upper-layer absorbent body is deformed so as to swell toward the wearer's skin while maintaining its shape substantially, so that separation between them can be suppressed, and the abdomen when the body is lying on its side Can prevent urine leakage from the side.
Moreover, since the left and right inclined portions of the wall portion correspond to the wearer's left and right groin portions, the front upper layer absorbent body between the wearer's left and right groin portions corresponds to the wearer's lower abdomen, and the skin surface and the disposable absorbent article Adhesion is improved and urine leakage is less likely to occur.

<Invention of Claim 3>
The disposable upper absorbent article according to claim 1 or 2, wherein the front upper layer absorbent body is V-shaped or U-shaped, and the lower layer absorbent body is located in a region surrounded by an inner edge of the V-shaped or U-shaped. .

(Function and effect)
Since the lower layer absorbent body faces the region surrounded by the inner edge of the V or U shape, the lower layer absorbent body in the region surrounded by the V or U shape swells toward the wearer's skin at the time of wearing. Thus, the separation between the wearer's skin surface and the disposable absorbent article can be suppressed, and urine leakage is less likely to occur.

<Invention of Claim 4>
The disposable of Claim 2 in which the pocket which does not have the upper layer absorber divided by the rear wall of the said front upper layer absorber and the front wall of the said rear upper layer absorber is formed in the width direction center area | region of the said wall part. Absorbent article.

(Function and effect)
When the wearer is a man, a gap is likely to be generated between the absorber and the wearer's body due to the penis. Therefore, by providing a pocket in which no upper-layer absorber is present, the generation of a gap between the penis absorber and the wearer's body can be suppressed, and urine leakage can be prevented.

<Invention of Claim 5>
The disposable absorbent article according to claim 1 or 2, further comprising a slit extending in the front-rear direction at least partially overlapping with the front upper-layer absorber in the intermediate portion in the width direction of the lower-layer absorber.

(Function and effect)
By providing the slit in the lower layer absorber, urine transferred to the lower layer absorber can be diffused from the front body side to the back body direction. As a result, the amount of urine absorbed can be maximized.

  As described above, according to the present invention, it is possible to provide a disposable absorbent article that can suppress the separation between the skin surface of the lower abdomen of the wearer and the absorbent body and is unlikely to leak urine.

It is a top view of the disposable absorbent article of 1st Example concerning this invention. It is a top view of the disposable absorbent article of 2nd Example concerning this invention. It is the top view which showed arrangement | positioning of the gathering of the disposable absorbent article concerning this invention. FIG. 4 is a cross-sectional view taken along a line 4-4 in FIG. It is a top view of the disposable absorbent article of 3rd Example concerning this invention. It is a top view of the disposable absorbent article of 3rd Example concerning this invention. It is a top view of the disposable absorbent article of 4th Example concerning this invention. It is a perspective view at the time of wearing of the disposable absorbent article concerning the present invention. It is a top view of the disposable absorbent article of 5th Example concerning this invention.

  Hereinafter, a first embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a plan view of a disposable absorbent article according to the present invention.
This disposable absorbent article can be divided into a front body side located on the front side and a back body side located on the rear side.

This disposable absorbent article includes a surface sheet 1 that allows a skin contact surface to transmit a liquid such as a urine of a wearer, a liquid-impermeable sheet 3 provided on a surface opposite to the skin contact surface, and the surface sheet. 1 and an absorbent body 4 provided between the liquid-impermeable sheet 3.
And this absorber 4 consists of the lower layer absorber 6 in the liquid-impermeable sheet 3 side, and the upper layer absorber 5 in the surface sheet 1 side.
As shown in FIG. 1, the upper layer absorbent body 5 has a substantially V-shaped wall portion 7 that narrows toward the center in the front-rear direction, and has a front upper layer absorbent body 5 </ b> A that extends to the front side of the wall portion 7.

  A liquid-impermeable sheet 3 is provided on the back side of the absorber 4. As the liquid-impermeable sheet 3, a liquid-impermeable plastic sheet such as polyethylene or polypropylene is used. In recent years, a sheet having moisture permeability is preferably used from the viewpoint of preventing stuffiness. This liquid-impermeable sheet 3 is a microporous sheet obtained by, for example, melt-kneading an inorganic filler in an olefin resin such as polyethylene or polypropylene to form a sheet, and then stretching in a uniaxial or biaxial direction. is there.

  The surface side of the absorber 4 is covered with the top sheet 1. As the surface sheet 1, a perforated or non-porous nonwoven fabric or a perforated plastic sheet is used. As the material fiber constituting the nonwoven fabric, synthetic fibers such as polyethylene or polypropylene, synthetic fibers such as polyester and amide, recycled fibers such as rayon and cupra, and natural fibers such as cotton can be used.

  The upper layer absorbent body 5 and the lower layer absorbent body 6 are basically composed of a piled-up body of pulp fibers, an aggregate of filaments such as cellulose acetate, or a nonwoven fabric, and if necessary, mixed and fixed with a superabsorbent polymer such as particles. And the like can be used. The upper layer absorbent body 5 and the lower layer absorbent body 6 can be wrapped with a wrapping sheet (not shown) such as crepe paper, if necessary, such as when mixing superabsorbent polymer particles.

FIG. 2 is a plan view of the disposable absorbent article according to the second embodiment of the present invention.
It has a front upper layer absorber 5A extending to the front side from the wall portion 7 that is substantially V-shaped or U-shaped constricted toward the center in the front-rear direction, and a rear upper layer absorber 5B extending to the rear side from the wall portion 7. ing.

In this way, by providing the rear upper layer absorber 5B, the absorption capacity is large, and it can withstand long-time use.
In this form, even if the rear upper layer absorber 5B is present, the front upper layer absorber 5A is cut off from the rear upper layer absorber 5B, so that the rear upper layer absorber 5B is sandwiched between both legs, Accordingly, the deformation of the rear upper layer absorber 5B does not propagate to the front upper layer absorber side 5A. As a result, the front upper layer absorbent body 5A is deformed so as to swell toward the wearer's skin while substantially maintaining its shape, so that the separation between them can be suppressed, and when the body is lying sideways, It prevents urine leakage on the ventral side.

Further, the front upper layer absorbent body 5A is substantially V-shaped or U-shaped. And the lower layer absorber 6 is located in the inner area surrounded by the V-shape or U-shape.
Since the lower layer absorbent body 6 is located in the inner region (Z region) surrounded by the V or U character, the lower layer absorption of the inner region (Z region) surrounded by the V or U character at the time of wearing. The body 6 comes to swell toward the wearer's skin, and the separation between the wearer's skin surface and the disposable absorbent article can be suppressed, and urine leakage is less likely to occur.

In addition, it is preferable that the left-right inclined part of the wall part 7 is made into the positional relationship substantially corresponding to a wearer's left-right inguinal part. This is because the left and right inclined portions of the wall portion 7 are in contact with the wearer's left and right inguinal portions, thereby improving the adhesion between the wearer's skin surface and the disposable absorbent article and preventing urine leakage.
The angle θ of the left and right inclined portions of the wall portion 7 in FIG. 2 is preferably matched to the angle of the wearer's left and right inguinal portions, but is generally preferably 45 to 75 degrees.

Next, the solid gather 10 and the planar solid gather 20 will be described with reference to FIGS. 3 and 4.
FIG. 3 is a plan view in which the three-dimensional gather 10 and the planar three-dimensional gather 20 are arranged on the disposable absorbent article according to the present invention. 4 is a cross-sectional view taken along the line 4-4 of the plan view of FIG.

A pair of three-dimensional gathers 10 having a rubber thread S so as to be longitudinally cut across the front body side F located on the front side of the disposable absorbent article according to the present invention and the back body side B located on the rear side. It is arranged.
By arranging the three-dimensional gather 10 in this way, the three-dimensional gather 10 can be brought into contact with the wearer's skin, and urine can be prevented from leaking from the side of the disposable absorbent article.

Further, the embodiment is characterized in that a pair of planar three-dimensional gathers 20 each having an elongated elastic member S are further provided inside the pair of three-dimensional gathers 10 in the lateral direction. It is preferable that the pair of surface solid gathers 20 is substantially parallel to the pair of solid gathers 10. This is because the pair of surface gathers 20 supplements the functions of the pair of solid gathers 10. By this pair of surface solid gathers 20, it is possible to prevent the surface solid gathers 20 from coming into contact with the wearer's skin when worn and urine and the like leak from the side of the disposable absorbent article.
Note that H in FIG. 4 is fixed by a hot melt adhesive or the like.

  As materials for the three-dimensional gathers 10 and the three-dimensional gathers 20, plastic sheets and meltblown nonwoven fabrics can be used, but from the viewpoint of touch to the skin, a non-woven fabric with a water repellent treatment with silicon or the like is preferably used. Is done.

  As this elongated elastic member S, styrene rubber, olefin rubber, urethane rubber, ester rubber, polyurethane, polyethylene, polystyrene, styrene butadiene, silicon, polyester, etc., which are formed in a thread shape, string shape, belt shape, or the like. Ordinarily used materials can be used.

FIG. 5: is the top view which showed the structure of the disposable absorbent article concerning this invention of 3rd Example. The third embodiment is characterized in that pockets P are provided in the upper layer absorber 5 and the lower layer absorber 6.
It should be noted that “pocket” in the present invention refers to “a part where no absorber is provided”, and does not indicate a bag-like form provided on clothes or the like.

When a man wears a disposable absorbent article, a gap is likely to occur between the absorbent body 4 and the wearer's body due to the penis. And the inconvenience that urine leaks out from the disposable absorbent article occurs due to the existence of the gap.
Therefore, this invention provided the location (1st pocket P1) which does not provide the absorber which contact | abuts a wearer's penis in the upper layer absorber 5 as shown in FIG. When the first pocket P1 is provided, the shape of the front upper layer absorbent body 5A is U-shaped. By providing the first pocket P <b> 1 in the portion that comes into contact with the wearer's penis, the adhesion between the wearer's penis and the disposable absorbent article can be improved. Therefore, it is possible to prevent urine from leaking from the disposable absorbent article.

In addition, as shown in FIG. 6, in the present invention, the lower absorbent body 6 in the lower layer of the first pocket P <b> 1 is not provided with an absorbent body that contacts the wearer's penis at a portion that contacts the wearer's penis ( A second pocket P2) was provided.
By providing the second pocket P2, the adhesion between the wearer's penis and the disposable absorbent article can be further improved, and urine leakage from the disposable absorbent article can be further prevented.

  5 and 6 show examples in which the shapes of the first pocket P1 and the second pocket P2 are different, the shapes of the first pocket P1 and the second pocket P2 may be the same. Further, the area of the first pocket P1 may be larger than the area of the second pocket P2.

In the fourth embodiment, as shown in FIG. 7, a slit 8 is provided from the front waistline region F to the back waistline region B of the lower layer absorbent body 6. Thus, by providing the slit 8 in the lower layer absorbent body 6, urine that has moved to the lower layer absorbent body 6 can be diffused from the front body side toward the back body body. As a result, the amount of urine absorbed can be maximized.
In addition, although the example which provided the slit 8 was shown in FIG. 7, you may provide an emboss instead of a slit.

  Moreover, although the slit 8 of FIG. 7 is carrying out the rectangular shape by planar view, this invention is not limited to this. Specifically, it may be a slit 8 that goes from the front waist area to the rear waist area, and may be a wave shape, a zigzag shape, a circle or an ellipse shape, or the like. Further, not only one slit but also a plurality of slits may be provided.

  FIG. 8 is a perspective view of the upper layer absorbent body 5 of the disposable absorbent article according to the present invention. The upper layer absorber 5 includes a front upper layer absorber 5A and a rear upper layer absorber 5B, and has a wall portion 7. The upper layer absorber 5 has a raised shape like a mountain.

FIG. 9 is a view of a disposable absorbent article according to a fifth embodiment of the present invention.
In FIG. 1 and FIG. 2, an example in which the shape of the front upper layer absorbent body 5A is bifurcated is shown, but the present invention is not limited to this. Specifically, as shown in FIG. 9, it may have a pentagonal shape in plan view.

1: surface sheet, 3: liquid impervious sheet, 4: absorber, 5: upper layer absorber, 5A: front upper layer absorber, 5B: rear upper layer absorber, 6: lower layer absorber, 7: wall, 8 : Slit, 10: three-dimensional gather, 20: plane three-dimensional gather, S: elongated elastic member, H: hot melt

Claims (5)

Disposable absorbent article comprising a liquid-permeable surface sheet that permeates body fluid, a liquid-impermeable sheet, and an absorbent body that has a cotton-like pulp that is interposed between them and absorbs body fluid that has permeated the surface sheet. In
The absorber has a lower layer absorber and an upper layer absorber disposed thereon,
As the upper layer absorber, it has a front upper layer absorber in the front body,
The front upper layer absorber has a V-shaped or U-shaped continuous wall portion constricted from the front side in the front-rear direction to the rear side at the rear edge of the front upper layer absorber,
The disposable absorbent article characterized in that the left and right inclined portions of the wall portion have an inclination along the wearer's left and right groin portions and are in a positional relationship in contact with the wearer's left and right groin portions. Disposable absorbent article comprising a liquid-permeable surface sheet that permeates body fluid, a liquid-impermeable sheet, and an absorbent body that has a cotton-like pulp that is interposed between them and absorbs body fluid that has permeated the surface sheet. In
The absorber has a lower layer absorber and an upper layer absorber disposed thereon,
As the upper layer absorber, having a front upper layer absorber located in the front body, and a rear upper layer absorber,
The front upper layer absorber has a V-shaped or U-shaped continuous wall portion constricted from the front side in the front-rear direction to the rear side at the rear edge of the front upper layer absorber,
The rear upper layer absorber is located on the rear side of the wall portion,
The disposable absorbent article characterized in that the left and right inclined portions of the wall portion have an inclination along the wearer's left and right groin portions and are in a positional relationship in contact with the wearer's left and right groin portions.   The disposable upper absorbent article according to claim 1 or 2, wherein the front upper layer absorbent body is V-shaped or U-shaped, and the lower layer absorbent body is located in a region surrounded by an inner edge of the V-shaped or U-shaped. .   The disposable of Claim 2 in which the pocket which does not have the upper layer absorber divided by the rear wall of the said front upper layer absorber and the front wall of the said rear upper layer absorber is formed in the width direction center area | region of the said wall part. Absorbent article. The disposable absorbent article according to claim 1 or 2, further comprising a slit extending in the front-rear direction at least partially overlapping with the front upper-layer absorber in the intermediate portion in the width direction of the lower-layer absorber.

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