JP5422768B1 - Absorbent articles - Google Patents

Abstract

[PROBLEMS] To effectively prevent leakage to the outside even when a large amount of excretory fluid is discharged at once, such as urge incontinence, and when attaching an absorbent article to the underwear, an appropriate position on the underwear Even when it is attached with a shift in the longitudinal direction, the desired leak-proof property can be exhibited substantially without significantly impairing the leak-proof property.
An absorbent core has a protruding portion that protrudes toward the skin side on a surface facing the skin side in the thickness direction. The protruding portion 11p is formed in an annular shape surrounding the central portion in the longitudinal direction of the absorbent core 11, and a pair of linear portions 11P1 parallel to the longitudinal direction as end portions in the width direction of the protruding portion 11p. , 11P2 are arranged in the width direction. The surface facing the skin side in the thickness direction of the main body is provided with a leak-proof wall along the longitudinal direction, and the standing start position at which the leak-proof wall starts to stand up from the surface, The position corresponding to the linear portion is set.
[Selection] Figure 6

Description

  The present invention relates to an absorbent article such as a urine collecting pad used by being attached to underwear.

  Conventionally, disposable diapers have been used as absorbent articles that absorb urine as excretory fluid. This diaper includes an absorbent core formed of a liquid absorbent material such as pulp fiber, a liquid-permeable surface sheet that covers the absorbent core from the skin side in the thickness direction, and a liquid that covers the core from the non-skin side. And an impermeable back sheet. Further, the developed shape of the diaper has a substantially hourglass shape having a longitudinal direction, a width direction, and a thickness direction. That is, the central part of the longitudinal direction is constricted in the width direction. The constricted part is applied to the wearer's crotch as the crotch part, the front part in the longitudinal direction from the crotch part is applied to the lower abdomen of the wearer as the front body, and the rear side in the longitudinal direction from the crotch part The part is applied to the wearer's buttocks as the back body, and is thus worn on the lower body of the wearer. Usually, when a diaper is worn, clothing such as trousers and skirt is directly put on the diaper, that is, the diaper is an absorbent article used instead of underwear such as pants.

  Patent Document 1 discloses an example of this diaper. FIG. 1A is a schematic plan view of the diaper 101. Moreover, FIG. 1B is BB sectional drawing in FIG. 1A, Comprising: Only the absorptive core 111 is shown. In this example, the planar shape of the absorbent core 111 has a substantially hourglass shape constricted in the width direction at the position of the central portion in the longitudinal direction. In Patent Document 1, two examples of the configuration of the absorbent core 111 are disclosed. That is, as shown in FIG. 1A, a configuration in which protrusions 113, 113 protruding to the skin side are formed along the respective edges on both sides in the width direction of the absorbent core 111, and as shown in FIG. 1C. In addition to the pair of protrusions 113, 113, a structure in which a protrusion 115 protruding to the skin side is further formed on the front edge in the longitudinal direction of the absorbent core 111 is disclosed. In the former configuration, it is possible to prevent urine leakage in the width direction by damming up the urine staying on the skin side surface of the absorbent core 111 with the protrusions 113 and 113 on both sides in the width direction. Moreover, in the latter configuration, leakage of urine from the front in the longitudinal direction can be further prevented.

JP-T-2006-526438

  By the way, especially in adults, there is a great psychological resistance to wearing diapers, and there are people who cannot use diapers while feeling the necessity.

  Therefore, recently, as a substitute for diapers, a urine pick-up pad that is attached to an undergarment is also used. And, if it is such a urine removing pad, its usage pattern is similar to a sanitary napkin, that is, it is attached to the body by attaching the pad to the underwear and wearing the underwear. Therefore, it can be used with a feeling of use similar to that of a sanitary napkin, and can be used without feeling psychological resistance as in diapers.

  However, urine absorption pads are often used for light incontinence, and those for severe incontinence such as urge incontinence that discharge a large amount of urine at a stroke are not provided on the market. Therefore, when a large amount of urine is discharged all at once, the urine that cannot be absorbed instantaneously by the absorbent core stays on the skin side of the absorbent core, and the urine falls on both sides in the width direction and There is a risk that it will flow to both sides in the longitudinal direction at once and leak from the four sides of the urine collection pad.

  Here, as a means for preventing leakage of urine that cannot be absorbed from all sides, it is also conceivable to apply the configuration of the absorbent core 111 disclosed in Patent Document 1 of the diaper to the urine collection pad.

  However, since both of the two configurations disclosed in Patent Document 1 do not surround the outer peripheral edge of the absorbent core 111, the protrusions 113, 113, 115 protruding to the skin side, There is a risk that urine that cannot be immediately absorbed by the absorbent core 111 will leak out of the skin side surface of the core 111 from where there are no protrusions 113, 113, 115.

  Further, as shown in FIG. 1A, the protrusions 113, 113 formed at the edges on both sides in the width direction are formed along the substantially hourglass-shaped outer shape of the absorbent core 111. The protrusions 113 and 113 have a curved shape in which the position in the width direction changes according to the position in the longitudinal direction, not the linear shape along the longitudinal direction. Therefore, when attaching the pad to the underwear while keeping the longitudinal direction of the urine collecting pad along the longitudinal direction of the underwear, if the pad is attached to a position shifted in the longitudinal direction from the appropriate position on the underwear, The urine damming effect in the width direction that can be played by the pair of protrusions 113, 113 arranged in the width direction may be changed from the level that can be played originally, that is, when it is attached to an appropriate position There is a risk of significant decline from the leak-proof property of the season. And the situation that it cannot attach to underwear like this tends to occur especially in the elderly person who needs a urine collection pad.

  The present invention has been made in view of the conventional problems as described above, and its purpose is to effectively prevent leakage to the outside even when a large amount of excretory fluid is discharged at once, such as urgency incontinence. In addition to being able to prevent, even when absorbent articles are attached to the underwear, even if they are attached in the longitudinal direction from the appropriate position on the underwear, the expected leakage prevention performance is generally achieved without significantly impairing the leakage prevention performance. There is in making it possible.

The main present invention for achieving the above object is as follows.
An absorbent article used to be attached to underwear to absorb excretory fluid, and having a thickness direction, a width direction, and a longitudinal direction,
The main body of the absorbent article has an absorbent core containing a liquid absorbent material,
The absorbent core has a protruding portion that protrudes toward the skin side on the surface facing the skin side in the thickness direction,
The projecting portions are formed in an annular shape surrounding the longitudinal central portion of the absorbent core, and a pair of first parallel to the longitudinal direction as the end portions in the width direction of the projecting portions . One linear portion is arranged in the width direction, and a pair of second linear portions parallel to the width direction is arranged in the longitudinal direction as each end portion of the projection in the longitudinal direction. And
The width of the top surface of the second linear portion is larger than the width of the top surface of the first linear portion,
Of the main body portion, a surface facing the skin side in the thickness direction is provided with a leak-proof wall portion along the longitudinal direction, and the leak-proof wall portion starts to stand up from the surface. The absorbent article is characterized in that a start position is set to a position corresponding to the first linear portion.
Other features of the present invention will become apparent from this specification and the accompanying drawings.

  According to the present invention, even when a large amount of excretory fluid is discharged at once, such as urge incontinence, it is possible to effectively prevent leakage to the outside, and when attaching an absorbent article to the underwear, Even in the case of being attached with a shift from the appropriate position in the longitudinal direction, it is possible to substantially exhibit the desired leak-proof property without greatly impairing the leak-proof property.

FIG. 1A is a schematic plan view of a diaper 101 of Patent Document 1 in which protrusions 113 and 113 for damming urine to an absorbent core 111 are provided on both edges in the width direction. FIG. 1B is a plan view of FIG. FIG. 1C is a schematic cross-sectional view of the diaper 101 in which a protruding portion 115 is further provided on the front side in the longitudinal direction of the absorbent core 111. It is a top view. It is a schematic plan view of the state which developed urine picking pad 1 as an absorptive article concerning this embodiment on a plane. 3A is a cross-sectional view taken along line AA in FIG. 2, FIG. 3B is a cross-sectional view taken along line BB in FIG. 2, and FIG. 3C is a cross-sectional view taken along line CC in FIG. It is the schematic plan view which looked at the urine picking pad 1 from the non-skin side. It is a schematic plan view of the urine removing pad 1 showing the position of the base end portion 41b. FIG. 6A is a schematic plan view showing the urine absorption pad 1 other than the absorbent core 11 as seen through, and FIGS. 6B and 6C are cross-sectional views taken along the line BB and CC in FIG. 6A, respectively. It is sectional drawing, Comprising: It is a figure which shows only the absorptive core 11. FIG. It is a schematic perspective view of the urine removing pad 1, and is a view showing a state where the central portion 1sC of the main body portion 1s of the pad 1 is dented to the non-skin side and the main body portion 1s has a cup shape. It is explanatory drawing of the urine picking pad 1 of the modification which concerns on this embodiment, Comprising: It is a figure corresponded in BB sectional drawing in FIG. FIG. 9A is a schematic plan view showing the urine absorption pad 1 of other embodiments other than the absorbent core 11 in perspective, and FIGS. 9B and 9C are cross-sectional views taken along line BB in FIG. 9A, respectively. It is a figure and CC sectional drawing, Comprising: It is a figure which shows only the absorptive core 11. FIG.

At least the following matters will become apparent from the description of the present specification and the accompanying drawings.
An absorbent article used to be attached to underwear to absorb excretory fluid, and having a thickness direction, a width direction, and a longitudinal direction,
The main body of the absorbent article has an absorbent core containing a liquid absorbent material,
The absorbent core has a protruding portion that protrudes toward the skin side on the surface facing the skin side in the thickness direction,
The protrusion is formed in an annular shape surrounding the longitudinal center of the absorbent core, and a pair of straight lines parallel to the longitudinal direction as end portions in the width direction of the protrusion. Having side-like portions in the width direction,
Of the main body portion, a surface facing the skin side in the thickness direction is provided with a leak-proof wall portion along the longitudinal direction, and the leak-proof wall portion starts to stand up from the surface. The absorbent article is characterized in that a start position is set to a position corresponding to the linear portion.

  According to such an absorbent article, the protruding portion of the absorbent core is formed in an annular shape so as to surround the central portion in the longitudinal direction. Therefore, when a large amount of excretory fluid is discharged at a stroke due to urge incontinence or the like, the excretory fluid that cannot be instantaneously absorbed by the absorbent core can be effectively dammed by the annular protrusion. That is, the excretory fluid can be temporarily stored in the space surrounded by the protrusions. And thereby, it is possible to earn time for the liquid absorption time so that the excretion liquid does not leak from the main body until the absorbent core finishes absorbing the excretion liquid, and as a result, from the longitudinal direction and the width direction. It is possible to effectively prevent leakage of excretory fluid.

  In addition, since the protruding portion is formed in an annular shape so as to surround the central portion in the longitudinal direction, the space surrounded by the protruding portion can be continuously and widely formed on both sides of the central position in the longitudinal direction. . And when the excretion liquid after discharge | emission flows through the said space, this excretion liquid can be spread | diffused in the wide range of a longitudinal direction in a comparatively short time. In addition, after the diffusion, the excretory liquid is sequentially absorbed by the absorbent core at the position where it has settled. Therefore, the area of the absorbent core that can contribute to the absorption of excretory fluid as a whole can be increased, and as a result, the amount of absorption per unit time can be increased. Contributes to the improvement of leakage resistance against

  Furthermore, since the protruding portion is formed in an annular shape so as to surround the central portion, the half portion on one end side in the longitudinal direction and the half portion on the other end side in the protruding portion can be made substantially the same shape. . Therefore, when the absorbent article is attached to the underwear, the wearer mistakes the one end side and the other end side in the longitudinal direction of the absorbent article, and attaches the absorbent article in the opposite direction to the original direction. Even if it exists, based on said substantially symmetrical shape of the protrusion part regarding the said longitudinal direction, an absorbent article can be worn as it is with the desired leak-proof property, without impairing the leak-proof effect largely. That is, according to the absorbent article, a foolproof effect can also be achieved.

  Moreover, the protrusion part has a pair of linear part parallel to a longitudinal direction along with the width direction. Therefore, when the wearer attaches the absorbent article to the underwear, even if the wearer is attached at a position shifted in the longitudinal direction from the appropriate position, the damming effect in the width direction that can be achieved by the pair of linear portions generally changes. Without this, even in such a case, the projecting portion can exhibit the desired leak-proof property.

  Further, a leak-proof wall portion is provided on the surface of the main body portion facing the skin side, and the standing start position of the leak-proof wall portion corresponds to the linear portion of the protruding portion of the absorbent core. Set to position. Therefore, the leak-proof wall portion and the linear portion can cooperate with each other to function as a high weir, which also contributes to the improvement of the leak-proof property in the width direction.

Such an absorbent article,
It is desirable that the space surrounded by the projecting portion is continuously present from one end to the other end in the longitudinal direction of the absorbent core.

  According to such an absorbent article, the space surrounded by the protrusions is continuously present from one end to the other end in the longitudinal direction. Therefore, the space can be secured widely, thereby increasing the capacity for temporarily storing the excreta. As a result, it is possible to ensure time earning until the absorbent core finishes absorbing the excretory fluid.

Such an absorbent article,
The protrusion is preferably provided along the outer peripheral edge of the absorbent core.

  According to such an absorbent article, the protrusion is provided along the outer peripheral edge of the absorbent core. Therefore, when the absorbent core has restrictions on the external dimensions, it is possible to secure the widest space surrounded by the protrusions under the restriction, thereby increasing the capacity for temporarily storing excretory fluid. Can be maximized. Therefore, time earning until the absorbent core finishes absorbing the excretory fluid can be ensured.

Such an absorbent article,
An adhesive part for attaching the main body part to the undergarment is provided on the surface of the main body part facing the non-skin side in the thickness direction,
It is desirable that at least a part of the linear portion of the protruding portion and the adhesive portion overlap each other when viewed from the thickness direction.

  According to such an absorbent article, at least a part of the linear portion of the protruding portion and the adhesive portion overlap each other when viewed from the thickness direction. Therefore, at least a part of the linear portion of the protruding portion is restricted so as not to move with respect to the underwear. Therefore, when the wearer wears the underwear, the straight portion and the leak-proof wall portion standing on the straight portion are also placed between the wearer's crotch as the underwear is placed along the wearer's crotch. As a result, the linear portion and the leak-proof wall portion can be brought into close contact with the wearer's crotch. And thereby, the leakage of excretion fluid from the longitudinal direction and the width direction can be more effectively prevented.

Such an absorbent article,
It is desirable that a plurality of the absorbent cores are overlapped in the thickness direction.

  According to such an absorbent article, it is possible to suppress a sense of incongruity due to the protruding portion at the time of wearing, while ensuring a high liquid absorption capacity of the protruding portion. Details are as follows. When the protrusion height of the protrusion is high, the wearer tends to feel uncomfortable because the protrusion hits the crotch of the wearer. On the other hand, if the protrusion height of the protrusion is lowered, the liquid absorption capacity of the protrusion may be reduced. Here, only the absorbent core located on the most skin side hits the crotch when worn. Therefore, if a plurality of absorbent cores with lowered protrusion heights are overlapped in the thickness direction while reducing the protrusion height of the protrusions of each absorbent core, the absorption determined by the total value of the protrusion heights of the protrusions. While increasing the liquid capacity, it is possible to suppress the discomfort between the crotch determined by the protruding height of the protruding portion of one absorbent core.

Such an absorbent article,
The leak-proof wall has a sheet-like member provided along the longitudinal direction, and an elastic member fixed to the sheet-like member in a state of being elongated in the longitudinal direction,
When the elastic member contracts from the stretched state, the sheet-like member contracts in the longitudinal direction and rises from the surface of the main body by the contracting force applied to the sheet-like member.
The contractile force is applied over the entire length of the predetermined range in the longitudinal direction,
It is preferable that at least a part of each end portion in the longitudinal direction of the protruding portion is included in the predetermined range.

  According to such an absorbent article, due to the contraction force of the elastic member, each end portion in the longitudinal direction of the protruding portion is lifted to the skin side, thereby reducing the gap between the skin side and the skin. can do. Therefore, the excretory fluid flowing in the longitudinal direction can be reliably dammed at each end portion in the longitudinal direction.

Such an absorbent article,
The main body has a liquid-permeable surface sheet provided on the skin side in the thickness direction than the absorbent core,
Of the main body part, the surface facing the skin side in the thickness direction is dented with a pressing part formed by pressing both the topsheet and the absorbent core together from the skin side in the thickness direction. Formed,
It is desirable that the pressing portion is provided along the longitudinal direction at a central portion in the width direction of a portion of the main body portion surrounded by the protruding portion.

  According to such an absorbent article, the pressing part is formed in the center part of the part enclosed by the said protrusion part among the main-body parts from the skin side. Therefore, the main body part is bent so as to be dented to the non-skin side at a substantially central position in the width direction with the pressing part as a folding point, and thereby the space surrounded by the protruding part can be expanded. As a result, urine can be temporarily stored more reliably in the same space.

Such an absorbent article,
The absorbent core is formed by laminating the liquid absorbent material in the thickness direction based on a basis weight distribution pattern,
It is desirable that the basis weight of the position having the protruding portion is larger than the basis weight of the position not having the protruding portion on a plane having the thickness direction as a normal direction.

According to such an absorbent article, the basis weight (g / m < ² >) of the position which has a protrusion part is larger than the basis weight of the position which does not have a protrusion part. For this reason, the amount of swelling after liquid absorption is larger at the position having the protruding portion than at the position surrounded by the protruding portion which is the position having no protruding portion. Therefore, even after the excretion fluid is absorbed, the position having the protruding portion protrudes larger toward the skin side, so that a space surrounded by the protruding portion can be secured widely. As a result, even when the excretory fluid is discharged next time, the excretory fluid that cannot be instantaneously absorbed by the absorbent core can be temporarily stored in the same space without any problem.

=== This Embodiment ===
FIG. 2 is a schematic plan view showing a state in which the urine absorbing pad 1 as the absorbent article according to the present embodiment is developed on a plane. 3A is a sectional view taken along the line AA in FIG. 2, FIG. 3B is a sectional view taken along the line BB in FIG. 2, and FIG. 3C is a sectional view taken along the line CC in FIG.

As shown in FIG. 2, the urine collection pad 1 has a longitudinal direction, a width direction, and a thickness direction as three directions orthogonal to each other. And the planar shape prescribed | regulated by the longitudinal direction and the width direction of the urine picking pad 1 has comprised the substantially rectangular shape as an example of vertically long shape.
In the following, with respect to the thickness direction, the side in contact with the human body is also referred to as “skin side”, and the side in contact with the underwear is also referred to as “non-skin side”. The longitudinal direction is also referred to as “front-rear direction”, and the width direction is also referred to as “left-right direction”. At the time of mounting on the human body, the front side of the urine collecting pad 1 in the longitudinal direction faces the ventral side of the human body, and the rear side faces the back side of the human body. Moreover, the dimension of the longitudinal direction of the urine picking pad 1 is longer than the dimension of the width direction, and the dimension of the width direction is longer than the dimension of the thickness direction.

  As shown in FIGS. 2 and 3B, the urine absorbing pad 1 has a main body 1s that is attached to the underwear when in use. The main body 1s includes an absorbent core 11 made of a liquid absorbent material that absorbs urine, a liquid-permeable surface sheet 21 that covers the absorbent core 11 from the skin side in the thickness direction, and a non-core core 11. A liquid-impermeable back sheet 31 covering from the skin side.

  The absorbent core 11 is formed by, for example, molding a mixture of liquid absorbent fibers and liquid absorbent granular materials as two types of liquid absorbent materials into a substantially rectangular flat plate shape as an example of a predetermined shape. In this example, pulp fibers are used as the liquid absorbent fibers, and superabsorbent polymers (hereinafter also referred to as SAP) are used as the liquid absorbent granules, but the present invention is not limited to this. For example, cellulose such as cotton, regenerated cellulose such as rayon, semi-synthetic cellulose such as acetate may be used as the former liquid absorbent fiber, and liquid absorbent particles other than SAP may be used as the latter liquid absorbent granular material. A granular material may be used.

Further, in this example, the liquid absorbent fibers and SAP are mixed at a mixing ratio (weight ratio) of 1: 1, but other mixing ratios may be used, and only one of them is included. You can leave. Further, in addition to the above two kinds of liquid absorbent materials, or in place of one of them, another kind of liquid absorbent material may be mixed. Moreover, in this example, although the absorptive core 11 is not coat | covered with liquid permeable sheets, such as tissue paper, you may coat | cover. Furthermore, although not provided in this example, an appropriate non-woven fabric or tissue paper may be inserted as a liquid-permeable second sheet between the absorbent core 11 and the top sheet 21.
Incidentally, as one of the ideas of this embodiment, the shape of the absorbent core 11 can be mentioned, which will be described later.

  As shown in FIGS. 2 and 3B, the top sheet 21 receives urine excreted from the human body, promptly sucks it in the thickness direction, and leads it to the absorbent core 11, for example, a plane of the absorbent core 11. A substantially rectangular sheet larger than the shape is used. For example, a nonwoven fabric such as an air-through nonwoven fabric or a spunbond nonwoven fabric is used as the material of the surface sheet 21, and a thermoplastic resin fiber such as polyethylene or polyethylene terephthalate is used as the constituent fiber of the nonwoven fabric. Moreover, the pressing part E formed by both pressing the surface sheet 21 and the absorptive core 11 together from the skin side of the thickness direction is formed on the skin side surface of the surface sheet 21, thereby the surface sheet 21. And the absorbent core 11 are joined and integrated. In addition, since the formation pattern of this pressing part E also makes one of the devices of this embodiment, this is also mentioned later.

  FIG. 4 shows a schematic plan view of the urine collecting pad 1 as seen from the non-skin side. As shown in FIGS. 4 and 3B, the back sheet 31 is a leak-proof sheet 31 that prevents urine leakage from the non-skin side of the main body 1 s of the urine removing pad 1, and the planar shape thereof is the absorbent core 11. It is a substantially rectangular shape that is larger than that. That is, the outer peripheral edge protrudes outward from the absorbent core 11 over the entire circumference. Then, in a state where the absorbent core 11 is placed on the back surface sheet 31, the back surface sheet 31 is joined to the top sheet 21 by heat welding or the like at each end in the longitudinal direction and each end in the width direction, for example. The absorbent core 11 is held between the top sheet 21 and the top sheet 21. Note that the state in which the absorbent core 11 is held between the back sheet 31 and the top sheet 21 corresponds to the main body 1 s of the urine removing pad 1 described above. As a material of the back sheet 31, for example, a film made of a thermoplastic resin such as polyethylene or polyethylene terephthalate is used.

  Further, on the non-skin side surface of the back sheet 31, there are formed anti-slip adhesive portions 33, 33 for attaching the urine collecting pad 1 to the underwear so as not to move. The formation of the non-slipping adhesive portions 33 and 33 is performed, for example, by applying a hot-melt adhesive to a predetermined position on the non-skin side surface of the back sheet 31. Since the position is one of the ideas of this embodiment, this will also be described later.

  As shown in FIGS. 2 and 3B, the body portion 1 s of the urine collecting pad 1 is made to correspond to each end portion in the width direction of the absorbent core 11 for the purpose of preventing urine leakage to the end side in the width direction. A pair of leak-proof wall portions 40, 40 are provided. A pair of leak-proof wall parts 40 and 40 are formed by the side sheets 41 and 41 (equivalent to a sheet-like member) which consist of SMS nonwoven fabric etc. which were water repellent treated, respectively. Each side sheet 41, 41 is provided so as to cover each end portion in the width direction of the surface sheet 21 from the skin side along the longitudinal direction. And it fixes to the surface sheet 21 by the heat welding etc. in the position corresponding to each edge part of the width direction of the absorptive core 11, and, thereby, the base end part 41b is formed. Note that the portion 41f extending from the base end portion 41b to the substantially central side in the width direction is a free end portion 41f, that is, the portion 41f basically serves as the leak-proof wall portion 40. On the other hand, a portion 41 s extending from the base end portion 41 b to the end in the width direction reaches the end edge in the width direction of the urine collecting pad 1, and the portion is overlapped with the top sheet 21 or the back sheet 31. Then, at the same edge, it is joined to the top sheet 21 or the back sheet 31 by heat welding or the like.

  Here, an elastic member 45 such as rubber thread along the longitudinal direction is fixed to the free end portion 41f by a hot melt adhesive in an extended state. Therefore, when the urine absorbing pad 1 is curved in the longitudinal direction so that the topsheet 21 side is the inner peripheral side, the elastic member 45 contracts in the longitudinal direction and the contracting force is applied to the free end portion 41f. The free end portion 41f contracts in the longitudinal direction and stands up from the surface sheet 21, whereby the free end portion 41f functions as the leak-proof wall portion 40. In the example of FIG. 3B, the free end portion 41f and the base end portion 41b are configured by folding two side sheets 41, and the elastic member 45 is interposed between the two overlapping end portions 41f. However, it is not limited to this.

  Further, in the schematic plan view of FIG. 5, the base end portion 41b is indicated by hatching, but in this example, the size of the base end portion 41b in the width direction is the front end portion 41b1 and the rear end portion in the longitudinal direction. 41b2 is set to be wide, and on the other hand, the intermediate portion 41b3 between the front end portion 41b1 and the rear end portion 41b2 is set to be narrow so that the center side in the width direction is removed. And by this, the standing height of the leak-proof wall part 40 is preferentially made high in the intermediate part 41b3, and the urine blocking action is optimized, but it is not limited to this. For example, the size in the width direction of the base end portion 41b may be a constant width over the entire length in the longitudinal direction.

  As shown in FIGS. 2, 3A, and 3C, the front end portion 41fa and the rear end portion 41fb of the free end portion 41f are hung on the base end portion 41b, and the hot melt adhesive is used. For example, the front end portion 41fa and the rear end portion 41fb are non-stand-up portions that do not stand up. Therefore, the contraction force of the elastic member 45 is selectively given only to the intermediate portion 41fm existing between the front end portion 41fa and the rear end portion 41fb of the free end portion 41f, and the intermediate portion 41fm is It shrink | contracts and it stands up as the leak-proof wall part 40. FIG.

  As described above, the basic configuration of the urine collecting pad 1 according to the present embodiment has been described. However, the urine collecting pad 1 according to the present embodiment is based on various ideas and has a leak-proof property against discharge of a large amount of urine such as urge incontinence. In the following, the device will be described.

  First, the device made | formed with respect to the absorptive core 11 is demonstrated. FIG. 6A is a schematic plan view showing a portion of the urine absorption pad 1 other than the absorbent core 11 as seen through. Moreover, FIG. 6B and FIG. 6C are the BB sectional drawing and CC sectional drawing in FIG. 6A, respectively, and both figures have shown the absorptive core 11 only.

  As described above, the planar shape of the absorbent core 11 is substantially rectangular. However, as shown in FIGS. 6A to 6C, the absorbent core 11 has a protruding portion 11 </ b> P protruding in the skin direction on the skin side surface, and the protruding portion 11 </ b> P is formed of the absorbent core 11. It is formed continuously over the entire circumference of the outer peripheral edge of the skin side surface. And thereby, the protrusion part 11P is formed in cyclic | annular form so that the center part 11C of the longitudinal direction in the absorptive core 11 may be enclosed.

  Therefore, when a large amount of urine is discharged at a stroke due to urge incontinence or the like, the urine that cannot be absorbed instantaneously by the absorbent core 11 can be effectively dammed by the annular protrusion 11P. That is, urine can be temporarily stored in the space SP11 surrounded by the protruding portion 11P. And by this, it is possible to earn time for the absorption time so that the urine does not leak from the main body portion 1s of the urine collecting pad 1 until the absorbent core 11 has absorbed the urine. Urine leakage from the direction and the width direction can be effectively prevented.

  Moreover, since the protrusion part 11P is formed along the outer periphery part of the absorptive core 11, space SP11 enclosed by the protrusion part 11P is each on the front side and the rear side which are the both sides of the center position CLL of a longitudinal direction, respectively. Widely formed continuously. That is, the space SP11 is continuously present in the absorbent core 11 from the front end portion to the rear end portion in the longitudinal direction. And, after the discharged urine flows through the space SP11, the urine is diffused over a wide range in the longitudinal direction within a relatively short time. Further, after such diffusion, urine is sequentially absorbed by the portion of the absorbent core 11 at the position where it has flowed. Therefore, the area of the absorbent core 11 that can contribute to the absorption of urine as a whole can be increased, and as a result, the amount of absorption per unit time can be increased, which also corresponds to the above-mentioned urgency incontinence. Contributes to improved leakage resistance.

  Furthermore, as shown in FIG. 6A, the front half and the rear half in the longitudinal direction of the annular protrusion 11P have substantially the same shape. Therefore, when attaching the urine collection pad 1 to the underwear, the wearer has mistakenly placed the front side and the rear side of the urine collection pad 1 in the longitudinal direction and attached the urine collection pad 1 in the opposite direction. Even so, based on the substantially symmetrical shape of the protruding portion 11P in the longitudinal direction, the urine removing pad 1 can be worn as it is with the desired leak-proof property without greatly impairing its leak-proof effect. it can. That is, according to the urine removing pad 1, a foolproof effect can also be achieved.

  Further, the projecting portion 11P has a pair of first linear portions 11P1 and 11P1 (corresponding to linear portions) parallel to the longitudinal direction side by side in the width direction as end portions in the width direction. As ends, a pair of second linear portions 11P2 and 11P2 parallel to the width direction are arranged in the longitudinal direction. For example, each of the first linear portions 11P1 and 11P1 has a substantially trapezoidal cross-sectional shape, and the cross-sectional shape is kept constant in the longitudinal direction and is continuous in parallel with the longitudinal direction. Each of the two linear portions 11P2 and 11P2 also has a substantially trapezoidal cross-sectional shape, and the cross-sectional shape is kept constant in the width direction and is continuous in the width direction.

  Therefore, when the wearer attaches the urine collecting pad 1 to the underwear, even if the wearer is attached to a position shifted in the longitudinal direction from the appropriate position, the pair of first linear portions 11P1 and 11P1 in the width direction that can be produced The urine damming effect is not substantially changed, so that the expected leakage prevention performance can be achieved even when the position is shifted.

As described above, the planar shape of the first linear portion 11P1 is a strip shape parallel to the longitudinal direction, and the planar shape of the second linear portion 11P2 is a strip shape parallel to the width direction. That is, both the first linear portion 11P1 and the second linear portion 11P2 have strip-shaped top surfaces 11P1t and 11P2t on the skin side, respectively. Here, the width dimensions of the top surfaces 11P1t and 11P2t, respectively. Is set to 10 mm or more, for example. And if it sets in this way, the urine which reached | attained to the protrusion part 11P can be blocked reliably.
Further, the protrusion height L11P of the protrusion 11P shown in FIGS. 6B and 6C is desirably set in the range of 0.5 mm to 5 mm, more preferably in the range of 1.5 mm to 3 mm. 2.0 mm is set as a target value. And if it is set to such a range, the problem which may occur when it is less than 0.5 mm, that is, the problem of insufficient space for temporarily storing urine before absorption can be solved, and 5.0 mm The problem which may occur when exceeding, ie, the problem of uncomfortable feeling when contacting the wearer's skin, can be solved.

  Incidentally, in this embodiment, the protrusion height L11P of the protrusion 11P is made constant over the entire circumference of the protrusion 11P. However, the present invention is not limited to this, and the protrusion height L11P of the protrusion 11P depends on the location. May be different. The protrusion height L11P is a height in a no-load state (natural state) where no external force acts on the protrusion 11P. This is the width of the protrusion 11P. The same applies to.

  In some cases, as shown in FIG. 6B, the width dimension of the top surface 11P2t of the second linear portion 11P2 may be larger than the width dimension of the top surface 11P1t of the first linear portion 11P1. The urine that tends to flow in the longitudinal direction of the urine collecting pad 1 can be reliably dammed up. In this example, the width dimension of the top surface 11P1t of the first linear portion 11P1 is 15 mm, and the width dimension of the top surface 11P2t of the second linear portion 11P2 is 52 mm.

Formation of the absorptive core 11 which has such a protrusion part 11P is based on the basis weight (g / m < ² >) of the liquid absorptive material which is the constituent material of the core 11, and the position on the skin side surface of the absorptive core 11 It is realized by making it differ according to. That is, on the plane whose thickness direction is the normal line direction, the basis weight distribution pattern is such that the basis weight at the position having the protruding portion 11P is larger than the basis weight at the position having no protruding portion 11P. The absorbent core 11 is formed by laminating liquid absorbent materials in the thickness direction based on this distribution pattern.

  And if it is formed in this way, the amount of swelling after absorbing urine will be larger at the position having the protruding portion 11P than at the position surrounded by the protruding portion 11P, which is the position not having the protruding portion 11P. . Therefore, even after the absorption of the urine, the position having the protruding portion 11P protrudes larger toward the skin side, and thereby the space SP11 surrounded by the protruding portion 11P can be maintained in a wide state. As a result, even when urine is discharged next time, urine that cannot be absorbed instantaneously by the absorbent core 11 can be temporarily stored in the space SP11 without any problem.

  Here, desirably, the basis weight of the position having the protrusion 11P is set to 1.2 to 4.0 times the basis weight of the position not having the protrusion 11P. And if it is set in this way, the following problems can be effectively avoided. First, in the case of less than 1.2 times, it becomes difficult to ensure a large protrusion height L11P of the protruding portion 11P and it becomes difficult to achieve sufficient leakage prevention, and when it exceeds 4.0 times Causes a problem that the difference in rigidity between the position having the protruding portion 11P and the position not having the protruding portion 11P is increased, and it becomes easy to feel uncomfortable when the urine collecting pad 1 is worn. If it is set to 2 to 4.0 times, these problems can be avoided.

By the way, in terms of specific numerical values, for example, the basis weight of the position having the protruding portion 11P is set in a range of 550 to 850 (g / m ² ), and the basis weight of the position not having the protruding portion 11P is It is set in the range of 200 to 500 (g / m ² ).

  Next, the device made | formed with respect to the leak-proof wall part 40 is demonstrated. As shown in FIG. 5, the standing start position 41be at which the leakage preventing wall 40 starts to rise from the top sheet 21 is the width of the edge 41be on the center side in the width direction of the base end 41b according to the leakage preventing wall 40. Although it is a position, in this embodiment, as a device related to the leak-proof wall portion 40, this standing start position 41 be is a position corresponding to the first linear portion 11 </ b> P <b> 1 of the protruding portion 11 </ b> P of the absorbent core 11. Is set. Specifically, the base end portion 41b of the leak-proof wall portion 40 is fixed to the topsheet 21 while aligning so that the standing start position 41be is positioned on the top surface 11P1t of the first linear portion 11P1. And if it does in this way, the leak-proof wall part 40 and the 1st linear part 11P1 will mutually cooperate, and it can function as a high dam, Thereby, it can improve the leak-proof property of the width direction more. it can.

In addition, with reference to FIG. 2 previously, it has been described above that “the intermediate portion 41fm of the free end portion 41f positioned between the front end portion 41fa and the rear end portion 41fb is raised by the elastic member 45”. (FIG. 2) Here, when the range in the longitudinal direction of the intermediate portion 41fm is a predetermined range Rm, it is desirable that the pair of second portions of the projecting portion 11P of the absorbent core 11 be within the predetermined range Rm. It is preferable that at least a part of the linear portions 11P2 and 11P2 (corresponding to “longitudinal ends of the protruding portions”) be included.
And if it is made in this way, each 2nd linear part 11P2 and 11P2 will be lifted to the skin side by the contractive force of the elastic member 45, respectively, and, thereby, the clearance gap between a wearer's skin is made small. can do. Therefore, it is possible to reliably dam the urine flowing in the longitudinal direction at the end portions in the longitudinal direction as the second linear portions 11P2 and 11P2.

Next, the device made | formed with respect to the adhesion part 33 for slip prevention is demonstrated. As shown in FIG. 4, the slip-preventing adhesive portion 33 is a hot-melt adhesive applied to a predetermined range on the non-skin side surface of the back sheet 31. In the example of FIG. 4, a pair of band-shaped anti-slip adhesive portions 33, 33 on the left and right sides in the width direction are spaced from the front end portion of the back sheet 31 with a predetermined interval so as to sandwich the center line CLW in the width direction. It is continuously formed up to the rear end.
Here, in this embodiment, when the urine absorbing pad 1 is viewed from the thickness direction, each of the anti-slipping adhesive portions 33 and 33 overlaps a part of the first linear portion 11P1 of the absorbent core 11. Is provided. Specifically, as shown by hatching in FIG. 4, the width-side end portion of each misalignment-preventing adhesive portion 33 is the center side in the width direction of the nearest first linear portion 11 </ b> P <b> 1. It is provided so that it may overlap.
Therefore, at least a portion on the center side in the width direction of the first linear portion 11P1 is regulated so as not to be relatively movable with respect to the underwear, so that the underwear is worn when the wearer wears the underwear. The leak-proof wall portion 40 that stands on the top surface 11Pt of the first linear portion 11P1 and the first linear portion 11P1 comes along the wearer's crotch as it is along the crotch of the wearer. . And as a result, the 1st linear part 11P1 and the leak-proof wall part 40 will be in the state closely_contact | adhered between wearer's crotches, and can prevent the urine leak from a longitudinal direction and the width direction more effectively. .

  However, the formation pattern of the anti-slipping adhesive portion 33 is not limited to the pair of belt-like patterns described above. For example, by applying a hot-melt adhesive to a position between the pair of anti-slip adhesive portions 33, 33, the anti-slip adhesive portion 33 may be formed as a continuous region in the width direction. Further, by appropriately setting the width direction dimension of the anti-slipping adhesive portion 33, the anti-slipping adhesive portion 33 is formed so as to overlap the entire first linear portion 11P1 when viewed from the thickness direction. May be. And if it forms in this way, the 1st linear part 11P1 will be further restrained so that relative movement is impossible with respect to underwear, and this can further raise said effect.

  Next, the device made | formed with respect to the pressing part E of the surface sheet 21 is demonstrated. As described above with reference to FIG. 2, a pressing portion E formed by pressing both the surface sheet 21 and the absorbent core 11 together from the skin side in the thickness direction is formed on the skin side surface of the surface sheet 21. Has been. And in this embodiment, in the center part 1sCw of the width direction of the part enclosed by the protrusion part 11P of the absorptive core 11 among the main-body parts 1s of the urine picking pad 1, it is 1st as a kind of said compression part E. The pressing part E1 is formed on the straight line along the longitudinal direction. For example, in the example of FIG. 2, the 1st pressing part E1 has several (three) groove part H1, H1, H1 long in a longitudinal direction, and each groove part H1 is between the groove parts H1 adjacent to a longitudinal direction. Are formed in a state of being spaced apart from each other. The groove H1 is formed on each of the front and rear portions of the center line CLL so as to sandwich the longitudinal center line CLL of the body portion 1s of the urine absorbing pad 1.

  And if such 1st pressing part E1 is formed, the force F which faced the center side of the width direction like the crotch force from the wearer who mounted | weared the underwear will be the urine picking pad 1 from the both sides of the width direction. When the main body 1s is applied to the main body 1s, as shown in the schematic perspective view of FIG. 7, the main body 1s of the urine collecting pad 1 is non-skinned at a substantially central position in the width direction with the first pressing part E1 as a folding point. The space SP11 (FIGS. 6A to 6C) surrounded by the projecting portion 11P can be enlarged by bending so as to be dented to the side. As a result, urine can be temporarily stored more reliably in the space SP11.

  Here, desirably, as in the example of FIG. 2, a pair of second compressed parts E2 and E2 are formed side by side in the width direction at each end in the longitudinal direction of the part surrounded by the protruding part 11P. And it is good for each 2nd pressing part E2 to be provided so that it may go to the end side from the center side of a width direction as it goes to the end side from the center side of a longitudinal direction. In addition, in this example, the 2nd pressing part E2 is formed in the form of one continuous groove part over the full length.

  And if such 2nd pressing part E2 is formed, under the effect | action to the main-body part 1s of said crotch tightening force F, 2nd pressing part E2 cooperates with the above-mentioned 1st pressing part E1. Thus, the main body 1s is deformed into a cup shape as shown in FIG. That is, the central portion 1sC in both the longitudinal direction and the width direction of the main body portion 1s is indented toward the non-skin side. As a result, the central portion 1sC is separated from the crotch, but the portions other than the central portion 1sC, that is, the end portions 1sLe, 1sLe in the longitudinal direction and the end portions 1sWe in the width direction of the main body portion 1s, About 1 sWe, it will be in the state closely_contact | adhered between a wearer's lower abdomen, buttocks, and crotch, respectively. That is, the main body 1s defines a substantially closed space in cooperation with the crotch. Therefore, it is possible to reliably temporarily store urine in an amount that the absorbent core 11 cannot instantaneously absorb due to urge incontinence or the like in the space.

Incidentally, the reason why the main body 1s is likely to be cup-shaped as shown in FIG. 7 based on the first pressing part E1 and the second pressing part E2 is as follows.
First, when a force F (FIG. 2) facing the center side in the width direction from the wearer's crotch acts on the body portion 1 s of the urine collecting pad 1 attached to the underwear from both sides in the width direction, it is shown in FIG. 7. Thus, the main body 1s is valley-folded so as to be recessed toward the non-skin side at the center portion 1sC in the width direction due to the first pressing portion E1.
On the other hand, a pair of second squeezing parts E2 and E2 are provided in each part on the end side in the longitudinal direction from the central part 1sC, but the pair of second squeezing parts E2 and E2 are substantially the same. Based on the V-shape, the distance between the second pressing parts E2 and E2 gradually opens toward the end in the longitudinal direction. Therefore, in these each part, the influence of the valley fold resulting from the 1st pressing part E1 is gradually relieved as it goes to the end side of a longitudinal direction, and this is longer than a pair of 2nd pressing part E2, E2. The end portions 1sLe and 1sLe, which are portions on the end side in the direction, have a planar shape substantially along a plane defined by the longitudinal direction and the width direction. And as a result, about the portions other than the central portion 1sC, that is, the end portions 1sLe, 1sLe in the longitudinal direction of the main body portion 1s and the end portions 1sWe, 1sWe in the width direction, the wearer's lower abdomen, buttocks, The main body 1s is deformed into a shape away from the crotch with respect to the center 1sC while closely contacting the crotch. That is, the main body 1s has a cup shape.

  Although not shown in detail in FIGS. 2 and 7, the groove portion H1 of the first squeezing portion E1 and the groove portion of the second squeezing portion E2 each have a deep portion and a shallow portion having different depths. doing. However, it is not limited to this. That is, the depth of the groove portion may be constant over the entire length. Moreover, depending on the case, the 1st pressing part E1 and the 2nd pressing part E2 may be formed in the several island-shaped dent part, Furthermore, the shape of the bottom face of each dent part is circular or a rectangle. May be.

Such a urine absorption pad 1 is manufactured by, for example, the following method using an appropriate manufacturing apparatus.
First, the absorptive core 11 is produced | generated with a fiber stacking apparatus. Specifically, the fiber stacking apparatus includes, for example, a suction belt conveyor that conveys an object to be conveyed while adsorbing an object to be conveyed with the upper surface serving as a conveying surface, and a rotating drum that is disposed above and rotates.

  The rotating drum has a dent portion on the outer peripheral surface, and the dent portion has an adsorption function for adsorbing the liquid absorbent material. Further, a deeper dent is formed on the bottom of the dent corresponding to the protrusion 11P of the absorbent core 11 described above. Therefore, the absorbent core 11 having the above-described annular protrusion 11P is generated by adsorbing and depositing the liquid absorbent material sprayed from an appropriate duct with the dents on the outer peripheral surface adsorbed thereon. And the produced | generated absorptive core 11 is sent to the downstream of a conveyance direction with a suction belt conveyor.

  At a predetermined position on the downstream side in the conveyance direction, the continuous body of the top sheet 21 assembled with the continuous body of the pair of side sheets 41 merges from below. That is, the continuum of each side sheet 41 is fixed to both sides in the width direction of the continuum of the top sheet 21 by heat welding or the like, and the continuum of each side sheet 41 is already in an expanded state. Elastic members 45, 45... Are fixed. And the absorptive core 11 is mounted on the continuous body of such a surface sheet 21. FIG. And after that, this absorptive core 11 and the surface sheet 21 are united and conveyed by the conveyance direction, and are sent to the embossing roll apparatus of the downstream of a conveyance direction by this.

  The embossing roll device has, for example, a pair of rotating upper and lower rolls, and a protrusion having a shape corresponding to the pressing part E such as the first pressing part E1 is provided on the outer peripheral surface of the lower roll. Therefore, when passing through the embossing roll device, the squeezed portion E is formed on both the continuous body of the topsheet 21 and the absorbent core 11 and is further sent downstream in the transport direction.

At a predetermined position on the downstream side in the conveyance direction, the continuous body of the back sheet 31 joins from above. And the absorptive core between the continuous body of the surface sheet 21 and the continuous body of the back surface sheet 31 by the continuous body of the back surface sheet 31 covering the continuous body of the top sheet 21 on which the absorbent core 11 is placed from above. 11 is inserted and sent to the downstream round seal device in this state.
Incidentally, at this point, the hot melt adhesive has already been applied to the non-skin side surface of the back sheet 31, and thus the anti-slip adhesive portions 33 and 33 have been formed. For the purpose of protecting the adhesiveness of the adhesive portions 33, 33, the adhesive portions 33, 33 are covered with a protective sheet such as a release sheet.

  The round seal device has, for example, a pair of rotating upper and lower rolls, and a protrusion having a shape corresponding to the contour shape of the urine collecting pad 1 is provided on the outer peripheral surface of the lower roll. Therefore, when passing through the round seal device, both the continuous body of the top sheet 21 and the continuous body of the back sheet 31 correspond to the end portions in the longitudinal direction and the end portions in the width direction of the urine collecting pad 1. They are joined to each other by heat welding or the like. As a result, a continuous body of the urine removing pad 1 is generated, and the continuous body of the urine collecting pad 1 is further sent to the die cutter device on the downstream side in the transport direction.

  The die cutter device has a pair of rotating rolls, and an outer peripheral surface of one of the rolls has a punching blade having a shape corresponding to the contour shape of the urine collecting pad 1. Therefore, when the continuous body of the urine removing pad 1 passes through the die cutter device, the urine absorbing pad 1 is individually punched out of the continuous body of the urine collecting pad 1 by the punching blade, and thereby the urine collecting pad is cut into a single sheet. Pad 1 is generated.

FIG. 8 is an explanatory diagram of a urine absorption pad 1 according to a modification of the present embodiment. Incidentally, FIG. 8 is a view corresponding to the BB cross-sectional view in FIG.
In the above-described embodiment, the structure of the absorbent core 11 is a single-layer structure having only one absorbent core 11. However, in this respect, the structure of the absorbent core 11 of this modification is as shown in FIG. As shown in FIG. 2, the difference is that it has a two-layer structure in which two absorptive cores 11, 11 as an example are overlapped in the thickness direction. In addition, points other than this are substantially the same as the above-mentioned embodiment. Therefore, below, the same code | symbol is attached | subjected about the same structure as the above-mentioned embodiment, and the description is abbreviate | omitted.

  As shown in FIG. 8, the planar shapes of the two absorbent cores 11, 11 are substantially the same as each other, and both absorbent cores 11, 11 are thick over the entire circumference of the outer peripheral edge portion. It has an annular protrusion 11P that protrudes toward the skin side in the vertical direction. And the two absorptive cores 11 and 11 are overlap | superposed in the thickness direction, aligning so that a mutual outer periphery part may overlap. In addition, when coat | covering with liquid permeable sheets, such as tissue paper, these two absorptive cores 11 and 11 are covered by the same sheet in the state which overlapped.

  And according to this modification, the uncomfortable feeling by the protrusion part 11P at the time of wear can also be suppressed, ensuring the liquid absorption capacity | capacitance of the protrusion part 11P high. Details are as follows. When the protruding height L11P of the protruding portion 11P is high, the wearer tends to feel uncomfortable because the protruding portion 11P hits the wearer's crotch. On the other hand, if the protrusion height L11P of the protrusion 11P is lowered, the liquid absorption capacity of the protrusion 11P may be reduced. Here, only the absorbent core 11 located on the most skin side hits the crotch when worn. Therefore, if the protruding height L11P of the protruding portion 11P of each of the absorbent cores 11 and 11 is reduced to, for example, half, the two absorbent cores 11 and 11 having a reduced protruding height L11P are overlapped in the thickness direction. In addition, while maintaining the liquid-absorbable capacity generally determined by the total value of the protrusion heights L11P of the protrusions 11P and 11P, the discomfort between the crotches generally determined by the protrusion height L11P of the protrusion 11P of one absorbent core 11 is suppressed. can do.

  Incidentally, in this modified example, the basis weight distribution pattern of the liquid absorbent material is the same between the two absorbent cores 11, 11. However, the present invention is not limited to this, and may be different depending on circumstances. . Also, the protrusion height L11P of the protrusion 11P is the same between the two absorbent cores 11 and 11, but is not limited to this, and may be different depending on circumstances. Further, three or more absorbent cores 11 may be overlapped in the thickness direction.

=== Other Embodiments ===
As mentioned above, although embodiment of this invention was described, said embodiment is for making an understanding of this invention easy, and is not for limiting and interpreting this invention. Further, the present invention can be changed or improved without departing from the gist thereof, and needless to say, the present invention includes equivalents thereof. For example, the following modifications are possible.

  In the above-described embodiment, the urine collecting pad 1 is described as an example of an absorbent article that is used while attached to underwear. However, the present invention is not limited to this. For example, a sanitary napkin that absorbs menstrual blood instead of urine may be used.

  In the above-described embodiment, as shown in FIGS. 6A to 6C, the absorbent core 11 has the protruding portion 11P that protrudes toward the skin side in the thickness direction along the outer peripheral edge portion of the skin side surface. , But not limited to this. For example, as shown in FIGS. 9A to 9C, the protruding portion 11 </ b> P may be formed in an annular shape at a position slightly in the center in the width direction and the longitudinal direction from the outer peripheral edge portion of the skin side surface of the absorbent core 11. Incidentally, FIG. 9A is a schematic plan view showing the urine collection pad 1 other than the absorbent core 11 in a perspective view, and FIGS. 9B and 9C are cross-sectional views taken along the line BB and C in FIG. 9A, respectively. It is -C sectional drawing, and is a figure which shows only the absorptive core 11. FIG.

  In the above-described embodiment, as illustrated in FIG. 6A, the shape of the absorbent core 11 is a substantially rectangular flat plate shape, that is, the planar shape of the absorbent core 11 is a rectangular shape, but is not limited thereto. For example, as shown in FIGS. 9A to 9C, the planar shape may be a substantially hourglass shape.

  In the above-described embodiment, as shown in FIGS. 6B and 6C, the cross-sectional shapes of the first linear portion 11P1 and the second linear portion 11P2 related to the protruding portion 11P of the absorbent core 11 are substantially trapezoidal. However, it is not limited to this. For example, it may be rectangular or square. In the above-described embodiment, the substantially trapezoidal cross-sectional shape of the first linear portion 11P1 is maintained constant over the longitudinal direction. However, depending on the case, the cross-sectional shape may be slightly different depending on the position in the longitudinal direction. It may change. That is, if the belt-like top surface 11P1t of the first linear portion 11P1 is parallel to the longitudinal direction and the width of the top surface 11P1t is constant over the longitudinal direction, urine collection is performed from an appropriate position on the underwear. Even when the pad 1 is displaced in the longitudinal direction, the expected leak-proof property can be generally secured. Therefore, the cross-sectional shape of the first linear portion 11P1 may slightly change depending on the position in the longitudinal direction.

In the above-described embodiment, the pair of first linear portions 11P1 and 11P1 have the same shape. However, the present invention is not limited to this, and may have different shapes. In other words, the meaning of “a pair” described in “having a pair of linear portions side by side in the width direction” according to the claims is a meaning of “a set of two straight portions that are treated as a set”. Accordingly, the cross-sectional shapes of one first linear portion 11P1 may be made trapezoidal, and the other cross-sectional shape may be made rectangular, or the width of the top surface 11P1t may be set to 11P1, 11P1 may be different from each other, and the protrusion height L11P1 may be different from each other between 11P1 and 11P1.
It should be noted that the meaning of the “pair” as described above is the same for the description of other components in the specification. For example, the same applies to “a pair of second linear portions 11P2 and 11P2” and “a pair of second pressing portions E2 and E2”.

1 Urine collecting pad (absorbent article),
1s body part, 1sCw center part,
1sC center, 1sLe end, 1sWe end,
11 Absorbent core, 11C center part,
11P protrusion,
11P1 first linear portion (linear portion), 11P1t top surface,
11P2 second linear portion, 11P2t top surface,
21 Top sheet, 31 Back sheet,
33 Adhesive part for preventing slippage (adhesive part),
40 Leak-proof wall,
41 side sheet (sheet-like member),
41b base end, 41b1 front end, 41b2 rear end, 41b3 middle part,
41be edge (standing start position),
41f free end part, 41fa front end part, 41fb rear end part, 41fm middle part,
41s part,
45 elastic member,
E pressing part,
E1 1st pressing part (squeezing part), H1 groove part,
E2 2nd pressing part,
Rm predetermined range,
CLL longitudinal center line (longitudinal center position), CLW width center line,
SP11 space,

Claims (8)

An absorbent article used to be attached to underwear to absorb excretory fluid, and having a thickness direction, a width direction, and a longitudinal direction,
The main body of the absorbent article has an absorbent core containing a liquid absorbent material,
The absorbent core has a protruding portion that protrudes toward the skin side on the surface facing the skin side in the thickness direction,
The projecting portions are formed in an annular shape surrounding the longitudinal central portion of the absorbent core, and a pair of first parallel to the longitudinal direction as the end portions in the width direction of the projecting portions . One linear portion is arranged in the width direction, and a pair of second linear portions parallel to the width direction is arranged in the longitudinal direction as each end portion of the projection in the longitudinal direction. And
The width of the top surface of the second linear portion is larger than the width of the top surface of the first linear portion,
Of the main body portion, a surface facing the skin side in the thickness direction is provided with a leak-proof wall portion along the longitudinal direction, and the leak-proof wall portion starts to stand up from the surface. An absorbent article, wherein a start position is set to a position corresponding to the first linear portion. The absorbent article according to claim 1,
The space surrounded by the protrusions is continuously present from one end to the other end in the longitudinal direction of the absorbent core. The absorbent article according to claim 1 or 2,
The said protrusion part is provided along the outer periphery part of the said absorptive core, The absorbent article characterized by the above-mentioned. The absorbent article according to any one of claims 1 to 3,
An adhesive part for attaching the main body part to the undergarment is provided on the surface of the main body part facing the non-skin side in the thickness direction,
At least one part of the said 1st linear part of the said protrusion part and the said adhesion part have overlapped when it sees from the said thickness direction, The absorbent article characterized by the above-mentioned. The absorbent article according to any one of claims 1 to 4,
A plurality of said absorptive cores are piled up in the thickness direction, An absorptive article characterized by things. The absorbent article according to any one of claims 1 to 5,
The leak-proof wall has a sheet-like member provided along the longitudinal direction, and an elastic member fixed to the sheet-like member in a state of being elongated in the longitudinal direction,
When the elastic member contracts from the stretched state, the sheet-like member contracts in the longitudinal direction and rises from the surface of the main body by the contracting force applied to the sheet-like member.
The contractile force is applied over the entire length of the predetermined range in the longitudinal direction,
An absorptive article, wherein at least a part of each end portion in the longitudinal direction of the projecting portion is included in the predetermined range. The absorbent article according to any one of claims 1 to 6,
The main body has a liquid-permeable surface sheet provided on the skin side in the thickness direction than the absorbent core,
Of the main body part, the surface facing the skin side in the thickness direction is dented with a pressing part formed by pressing both the topsheet and the absorbent core together from the skin side in the thickness direction. Formed,
The absorbent article, wherein the compressed portion is provided along the longitudinal direction at a central portion in the width direction of a portion of the main body portion surrounded by the protruding portion. The absorbent article according to any one of claims 1 to 7,
The absorbent core is formed by laminating the liquid absorbent material in the thickness direction based on a basis weight distribution pattern,
On the plane which makes the said thickness direction a normal line direction, the basis weight of the position which has the said protrusion part is larger than the basis weight of the position which does not have the said protrusion part, The absorbent article characterized by the above-mentioned.

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