TWI823849B - absorbent articles - Google Patents

Abstract

The present invention is to provide an absorbent article that can reliably prevent side leakage of excretion liquid and is also difficult to leak from the back side in the longitudinal direction. The absorbent article of the present invention is provided with an absorbent main body (2) including an absorber (21) and a pair of leakage-proof wall portions. The pair of leakage-proof wall portions respectively have a base portion (41) and a third The first wall part (42), the second wall part (43), and the liquid flow control part ( _FC ) composed of the first joint part (44) and the second joint part (45), the absorber (21 ), when viewed from above, the back region side end edge in the longitudinal direction is located further inward than the inward end edge in the width direction of the second joint portion (45), which is the innermost side in the longitudinal direction. The side end portion (45E _i ) is further outward in the longitudinal direction, and both end edges in the width direction of the absorbent body (21) are positioned inside the width direction of the base portion (41) at least in the back region (A _B ). The square side end edge is disposed further outward in the width direction in the absorbing body part (2).

Description

absorbent articles

The present invention relates to absorbent articles such as urine-absorbent pads and disposable diapers.

Conventionally, in absorbent articles such as absorbent pads and disposable diapers, the purpose of preventing side leakage of excretion fluids such as urine (i.e., leakage from the widthwise ends of the absorbent article) has been to A pair of leakage-proof walls (that is, three-dimensional wrinkles) standing toward the user's skin surface is provided on both sides of the absorbent article in the longitudinal direction (that is, both ends in the width direction).

This kind of absorbent article that prevents side leakage of excretion liquid is disclosed in Patent Document 1, for example. It includes a slightly thin sheet-shaped main body part in which an absorbent core is arranged between a lining sheet and a top sheet, and both sides of the main body part. A pair of side sheets are provided on the side portions across almost the entire length of the main body portion in the longitudinal direction. The pair of side sheets each have one side of a zigzag line provided across the entire length in the longitudinal direction. The portion is joined to the strip-shaped joint portion of the aforementioned body portion; and the portion on the other side of the aforementioned zigzag line is formed by the inner end edge in the width direction perpendicular to the aforementioned zigzag line, that is, the aforementioned longitudinal direction of the aforementioned joint portion. It is folded toward the outside in the width direction, further, is folded toward the inside in the width direction, and a part thereof is a side wall portion standing up from the aforementioned body portion; the aforementioned side wall portion is provided with: both ends in the aforementioned longitudinal direction are fixed. The two side wall ends on the aforementioned joint portion, and the rising portion between the aforementioned two side wall ends that is continuous from the aforementioned two side wall ends and rises from the aforementioned zigzag line, and that spans the aforementioned rising portion. The elastic member is arranged over almost the entire length in the longitudinal direction and shrinks the rising portion to form wrinkles by contraction. One of the side wall end portions of the two side wall ends is provided with: continuous from the rising portion. The elastic member is disposed at the position and is formed to be non-engaged with the joint part and the main body part, and a semi-rising part rises from the main body part lower than the rising part by contraction of the elastic member; and The fixing portion is adjacent to the outer side of the half-rising portion in the width direction and fixed to the joint portion. According to the absorbent article of Patent Document 1, side leakage from the vicinity of the longitudinal ends of the absorbent article can be prevented. [Prior art documents] [Patent documents]

[Patent Document 1] Japanese Patent Application Publication No. 2010-094321

However, in the absorbent article disclosed in Patent Document 1, in the above-mentioned semi-erected portion, both end portions in the width direction of the absorbent core are located further in the width direction than the fixed portions of the pair of side wall portions. Square side, so even if the excretion fluid flowing to the semi-rising portion of such a side wall portion is intercepted by the semi-rising portion, the intercepted excretion fluid cannot be fully absorbed by the absorbent core, and there is a problem from There is a possibility of leakage from the outer part of the absorbent core in the width direction.

Furthermore, in the absorbent article of Patent Document 1, both ends of the absorbent core in the longitudinal direction are located in the longitudinal direction and are substantially equal to the longitudinally inward end of the above-mentioned semi-erected portion. position (that is, in the longitudinal direction, the absorbent core does not exist further longitudinally outward than a position substantially equivalent to the longitudinally inward end of the above-mentioned semi-erected portion), especially when the excretion liquid is repeatedly discharged from the bed In the case where the user is discharged, etc., the excretion liquid flowing in the longitudinal direction cannot be suppressed by the raised portion and the semi-raised portion of the side wall portion by absorbing the liquid in the width direction. The core is fully absorbed, but there is a possibility that the exudate liquid leaks from the back side in the longitudinal direction of the absorbent article.

Here, an object of the present invention is to provide an absorbent article which can reliably prevent side leakage of excretion fluid and which is difficult to leak from the back side in the longitudinal direction.

An absorbent article according to one aspect (Aspect 1) of the present invention is provided with an absorbent main portion, which has an absorbent body having a longitudinal direction, a width direction, and a thickness direction, and having an abdominal region and an intercrotch region in the longitudinal direction. the upper area and the back area; and a pair of leakage-proof wall portions, which are respectively located at both ends of the aforementioned absorption body portion in the aforementioned width direction and span across them respectively. Both ends in the longitudinal direction extend continuously, and the leakage-proof wall portions each have a base portion facing the absorbent body portion and fixed to the absorbent body portion, and an inner side of the base portion in the width direction. The first wall portion is connected to the side end edges and stands up toward the skin-opposing surface side when worn, and the first wall portion is connected to the outer end edge in the width direction of the first wall portion and stands up toward the skin-opposing surface side when worn. The second wall portion is formed from a second wall portion, and at least in the back area, it has a liquid flow control portion arranged to include the end edge in the longitudinal direction and have a predetermined length in the longitudinal direction and a predetermined length in the width direction, and the control portion controls the aforementioned The erect structure of the first wall portion and the second wall portion controls the flow of the excretion liquid in the width direction and the thickness direction. Further, the liquid flow control portion includes: connecting the base portion and the first wall portion. The wall portions are joined together and have a first joint portion with a predetermined length in the longitudinal direction; and the first wall portion and the second wall portion are joined together and the length in the longitudinal direction of the inner end edge in the width direction is the first joint. The second joint portion is longer than the longitudinal length of the portion and less than the longitudinal length of the outer end edge in the width direction; the absorbent body is the back area of the absorbent body in the longitudinal direction when viewed from above The side end edge is located further outward in the longitudinal direction than an inward end located on the innermost side in the longitudinal direction among the inward end edges in the width direction of the second joint portion, and the aforementioned Both end edges in the width direction of the absorber are disposed in the absorbent body part so that at least the back region is located outward in the width direction from the inward edge in the width direction of the base part.

The absorbent article of this aspect 1 is provided with "a pair of leakage-proof wall parts including a base part, a first wall part, and a second wall part, and has a liquid flow control part at least in the back area, and the liquid flow control part includes : A first joint portion that joins the base portion and the first wall portion and has a predetermined length in the longitudinal direction; and a longitudinal direction of the inner end edge in the width direction that joins the first wall portion and the second wall portion. The length is the length of the second joint portion that is greater than the length in the longitudinal direction of the first joint portion and less than the length in the longitudinal direction of the outer end edge in the width direction; and the absorbent body is the length of the absorbent body when viewed from above The back region side end edge in the longitudinal direction is located further in the longitudinal direction than an inward side end located on the innermost side in the longitudinal direction among the inward side end edges in the width direction of the second joint portion. on the outer side, and both end edges of the absorber in the width direction are located on the outer side in the width direction of the inward end edge of the base portion in the width direction at least in the back area, Because of the specific structure "disposed inside the absorbent body part", the above-mentioned liquid flow control part can be formed to have a sufficient standing height by the above-mentioned first wall part and the second wall part and to be easily accessible from the user. The discharged excreta has a specific erect structure with sufficient durability. Therefore, the absorbent article of this aspect 1 is a liquid discharged from the user and flowing toward the outer side in the longitudinal direction and the width direction on the surface of the absorbent main part on the side facing the skin, toward the outer surface formed on the absorbent body part. The specific erected structure in the above-mentioned liquid flow control part and the cavity between the skin-facing surface of the absorbing body part are sealed while intercepting, so that the absorption into the absorbing body part can be carried out through the surface on the skin-facing side of the absorbing body part. It can be absorbed by the body, and the excretion fluid flowing toward the outer side in the longitudinal direction can be guided toward the inward side in the width direction by the above-mentioned liquid flow control portion, and can be absorbed through the surface of the skin-facing side of the absorbing main body portion. The absorbent body in the main body absorbs. As a result, the absorbent article of this aspect 1 can reliably prevent side leakage of excretion fluid, and it is also difficult to leak from the back side in the longitudinal direction.

Furthermore, in another aspect (aspect 2) of the present invention, in the absorbent article of aspect 1, the absorbent body has two sides in the width direction of the absorbent body in the crotch area. The end edge is an outer shape that is located further inward in the width direction than an inward edge in the width direction of the base portion and shrinks toward the inward side in the width direction.

In the absorbent article of this aspect 2, the absorbent body has: in the crotch region, both end edges of the absorbent body in the width direction are located further inward than the base portion in the width direction. The end edge has an outer shape that shrinks toward the inward side in the width direction. Therefore, in the intercrotular area, the pair of leakage-proof wall portions have a relatively high degree of freedom in deformation and movement. High, the pair of leak-proof wall portions can be closely adhered while following the user's body shape (the shape of the crotch portion). Therefore, the absorbent article of this aspect 2 can more reliably prevent side leakage of excretion liquid because it is difficult to form a gap between the user's body (crotch area) and the pair of leakage-preventing wall portions.

In a further aspect (aspect 3) of the present invention, in the absorbent article of aspect 1 or 2, the absorbent body has the width of the absorbent body in the abdominal region and the back region. Both end edges in the direction are located further outward in the width direction than the outer edge in the width direction of the second joint portion.

In the absorbent article of this aspect 3, in the abdominal region and the back region, both end edges of the absorber in the width direction are located further outward than the second joint portion in the width direction. The end edge is further outward in the width direction, so even if the user sleeps in the transverse direction (that is, the excretion fluid tends to flow in the direction of gravity (the direction of the outer side in the width direction of the absorption body part)), The excretion liquid flowing toward the outer side in the width direction can be reliably absorbed by the above-mentioned absorbent body, and side leakage of the excretion liquid can be more reliably prevented.

In a further aspect (Aspect 4) of the present invention, in the absorbent article in any one of the above-described aspects 1 to 3, the absorbent main body portion includes each of the absorbent articles arranged in the absorbent article extending in the longitudinal direction. A pair of embossed portions that are divided into a first widthwise area and a second widthwise area by a widthwise central axis and are recessed from the skin-facing surface toward the thickness direction, in the widthwise direction from the aforementioned embossed portion to the aforementioned base portion The total length of the width direction length to the inner edge, the width direction length of the first wall portion, and the width direction length of the second wall portion is longer than the length from the width direction center axis to the embossed portion. The width direction length is longer.

In the absorbent article of this aspect 4, since the absorbent main part includes the pair of embossed parts, further, the length in the width direction from the embossed part to the inward edge in the width direction of the base part , the total length of the width direction length of the aforementioned first wall portion and the width direction length of the aforementioned second wall portion is longer than the width direction length from the aforementioned width direction central axis to the aforementioned embossed portion, so the aforementioned one The opposite embossed portion serves as a starting point for meandering, and the widthwise central portion extending along the widthwise central axis of the absorbent body portion protrudes toward the skin-facing side (that is, the cross-sectional shape along the longitudinal central axis is approximately W-shaped). ) makes it easy to deform the absorbent body portion, and the standing height of the pair of leakage-proof wall portions is easily higher than the protruding height of the width-direction central portion protruding toward the skin-opposing surface side. Therefore, in the absorbent article of this aspect 4, the skin-facing surface in the widthwise central portion of the absorbent body portion is in close contact with or close to the user's intercrotch portion, so that the excretion fluid discharged from the user can be removed. It is easily absorbed into the absorber and can prevent side leakage of excretion liquid more reliably.

In a further aspect (aspect 5) of the present invention, in the absorbent article according to any one of aspects 1 to 4, the inner end edge of the first joining portion in the longitudinal direction is along Extend linearly in the aforementioned width direction.

In the absorbent article of this aspect 5, since the inner end edge of the first joining portion in the longitudinal direction extends linearly along the width direction, the longitudinal direction of the first joining portion is The erecting structure of the first wall portion and the second wall portion erecting from the inner side edge as a starting point is easy to stabilize, and the function of the above-mentioned liquid flow control unit can be more reliably exerted.

In a further aspect (Aspect 6) of the present invention, in the absorbent article of any one of the above-described aspects 1 to 5, the pair of leakage-preventing wall portions each have: when viewed from above, in the longitudinal direction. A plurality of elastic members are extended and arranged side by side in the width direction. The elastic members of the plurality of elastic members are such that the longitudinal length of the elastic members located on the outer side in the width direction is longer than that of the elastic members located on the inward side of the width direction. The lengthwise length of the elastic member is longer.

In the absorbent article of this aspect 6, since the elastic members located on the outer side in the width direction have a length in the longitudinal direction longer than the elastic members located on the outer side in the width direction of the plurality of elastic members respectively arranged on the pair of leakage-proof wall portions, The longitudinal length of the elastic member on the inner side of the direction is longer, so it is easy to maintain the structure of the first wall portion and the second wall portion in the outer portion of the pair of leakage-proof wall portions in the width direction. The resulting erected structure can further ensure durability against excretion liquid toward the outer side in the width direction, and the inward side portion in the width direction of the pair of leakage-proof wall portions (i.e., the one mentioned above) The degree of freedom of deformation and movement of the pair of leakage-proof wall portions (the portion that becomes the starting point for standing up and the portion that becomes the top) is high, and the pair of leakage-proof wall portions can easily follow the shape of the user's body ( The shape of the inter-crotch part) is close to each other. Thereby, the absorbent article of this aspect 6 can exhibit the leakage prevention function of the said pair of leakage prevention wall parts more favorably.

In a further aspect (Aspect 7) of the present invention, in the absorbent article of the above-mentioned aspect 6, the pair of leakage-proof wall portions respectively have: when viewed from above, the plurality of elastic members are The shrinkage area is formed to be shrinkable in the aforementioned longitudinal direction and extends in the aforementioned length direction. The aforementioned shrinkage area is the longitudinal length of the portion located on the inward side of the aforementioned width direction, which is longer than the length of the portion located on the outer side of the aforementioned width direction. Sections are longer lengthwise.

In the absorbent article of this aspect 7, in each shrinkage area of the pair of leakage-preventing wall portions, the longitudinal length of the portion located inward in the width direction is longer than that located outside the width direction. The longitudinal length of the side portion is longer, and the top portion of the pair of leakage-proof wall portions becomes difficult to roll up, so that the leakage-proof function of the pair of leakage-proof wall portions can be exerted more reliably.

In a further aspect (Aspect 8) of the present invention, in the absorbent article according to Aspect 7, the absorbent body has the absorbent body in a boundary portion between the abdominal region and the intercrotch region. The length in the width direction is a narrow width portion smaller than the maximum length in the width direction of the absorbent body in the abdominal area, and the narrow width portion overlaps the shrinkage area when viewed from above.

In the absorbent article of this aspect 8, the absorbent body is located at a boundary portion between the abdominal region and the crotch region, and the length in the width direction of the absorbent body is longer than the width of the absorbent body in the abdominal region. Since the rigidity of the absorbent article in the portion having the narrow width portion is relatively low, when the absorbent article is worn, the absorbent article must have the above-mentioned width. The narrow part serves as a starting point to make the surface on the opposite side of the skin concave and easy to bend. In addition, in the absorbent article of this aspect 8, the narrow width portion overlaps the shrinkage area when viewed from above. Therefore, when the absorbent article is worn, the narrow portion overlaps the boundary portion between the abdominal area and the crotch area with large curvature (i.e., (a portion that overlaps with the narrow width portion in the thickness direction), the surface of the second wall portion of the leakage-proof wall portion on the skin-facing side is formed into a planar shape that is maintained substantially parallel to the surface of the absorbing main portion on the skin-facing side. The shape makes it easy for the above-mentioned leakage-proof wall to stand up toward the side opposite to the skin. Therefore, in the absorbent article of this aspect 8, it is possible to ensure a larger contact area between the leakage-proof wall portion, which has a larger curvature (i.e., the boundary portion between the abdominal region and the crotch region), and the user's skin surface when worn. (In other words, it is difficult to form a gap between the leakage prevention wall and the user's skin surface), so side leakage of excretion fluid can be more reliably prevented.

In a further aspect (Aspect 9) of the present invention, in the absorbent article of any one of the above-described aspects 1 to 8, each of the liquid flow control portions in the pair of leakage-proof wall portions is a separate one. The absorbent body is arranged in the abdominal region and the back region, and the end edge of the absorbent body on the abdominal region side in the longitudinal direction is located inward of the second joint portion in the width direction when viewed from above. Among the side end edges, the inner end located on the innermost side in the longitudinal direction is farther from the outer side in the longitudinal direction, and both end edges in the width direction of the absorber are at least in the abdominal region and the The back area is located on the outer side in the width direction of the inward edge of the base portion in the width direction, and is arranged in the absorption main body portion.

In the absorbent article of this aspect 9, each of the liquid flow control portions of the pair of leakage-proof wall portions is respectively arranged in the abdominal region and the back region, and the absorbent body is the absorbent body when viewed from above. The abdominal region side end edge in the longitudinal direction of the body is located further inward than the innermost end portion in the longitudinal direction among the inward side end edges in the width direction of the second joint portion. The outer side in the longitudinal direction, and both end edges of the absorber in the width direction are located further in the width direction than the inward end edges of the base portion in the width direction, at least in the abdominal region and the back region. On the outer side, it is arranged in the aforementioned absorbent body part, so even when the user sleeps in a prone state (that is, when the excretion discharged from the user easily flows toward the abdominal side in the longitudinal direction), etc., The liquid flow control unit disposed in the abdominal region can reliably prevent side leakage of excretion fluid in the abdominal region and make it difficult to leak from the abdominal side in the longitudinal direction.

According to the present invention, it is possible to provide an absorbent article which can reliably prevent side leakage of excretion fluid and which also makes it difficult for leakage from the back side in the longitudinal direction.

Hereinafter, preferred embodiments of the absorbent article of the present invention will be described in detail with reference to the drawings. Furthermore, in this specification, unless otherwise stated, "in an unfolded state, for an object (such as an absorbent article, absorbent body, etc.) placed on a horizontal surface, from the upper side in the vertical direction (the object is an absorbent In the case of an article, it is the surface (sheet side) when viewed in the thickness direction of the object", which is simply called "viewed from above". Here, the "expanded state" means a state in which an object placed on a horizontal surface is stretched along a horizontal surface, and further, the stretched state is released from the stretched state (for example, the object is stretched by an elastic member) The state of contraction to a certain extent, etc.) is called the "natural state".

The various directions used in this specification are as follows unless otherwise stated. In this specification, "longitudinal direction" refers to "the long direction of a vertically elongated object (such as an absorbent article, an absorbent body part, an absorbent body, etc.) when viewed from above", and "width direction" refers to Refers to "the shortest length direction (width direction) of a vertically long object when viewed from above", and "thickness direction" refers to "the vertical direction of an object placed on a horizontal surface in an unfolded state". These The length direction, width direction and thickness direction are in a perpendicular relationship with each other. In addition, in this specification, the longitudinal direction, the width direction, and the thickness direction of an absorbent article respectively correspond to the longitudinal direction, the width direction, and the thickness direction of the absorbent main part which constitutes this absorbent article. Furthermore, in this specification, "the side located at the center of the longitudinal direction of the longitudinal object and relatively close to the longitudinal central axis C _W extending in the width direction" is called " The "inward side in the longitudinal direction" is called the "outer side in the longitudinal direction" as "the side relatively far away from the longitudinal central axis C _W in the longitudinal direction of the vertically elongated object". Similarly, "in the width direction of a vertically long object, located at the center of the object in the width direction and relatively close to the width direction central axis _CL extending in the length direction" is called "the inner side in the width direction""Squareside" means "the side far away from the width direction central axis _CL in the width direction of the vertically long object" is called "the outer side in the width direction". In this specification, "the area in the longitudinal direction of the absorbent article or the absorbent main body that corresponds to the user's abdomen when the absorbent article is worn" is called the "abdominal area", and "the area in the absorbent article or "The area in the length direction of the absorbent main part, corresponding to the user's back to buttocks when wearing the absorbent article" is called the "back area", and "in the length direction of the absorbent article or the absorbent main part, located in the aforementioned abdomen The area between the area and the aforementioned back area, which corresponds to the user's crotch area when the absorbent article is worn, is called the "crotch area." Here, "while wearing" means the period from the time when the user wears the absorbent article (that is, the time when it becomes a usable state) to the period during which the state is maintained (wearing period). Furthermore, in this specification, unless otherwise stated, in the thickness direction of the absorbent article or the absorbent main part, "the side relatively close to the user's skin surface when the absorbent article is worn" is called ""Skin-oppositeside" refers to "the side far away from the user's skin when wearing the absorbent article" as "non-skin-opposite side". In addition, in this specification, the "surface on the skin-facing side" and the "non-skin-facing side" of absorbent articles and various constituent members (such as the absorbent main part, surface sheet, absorbent body, back sheet, side sheet, etc.) "Surface" is also called "skin-facing surface" and "non-skin-facing surface" respectively.

Figure 1 is a top view of the urine-absorbent pad 1 in an unfolded state according to an embodiment of the present invention. Figures 2 to 6 are respectively along II-II in the urine-absorbent pad 1 in Figure 1 Figure 7 is an end view of the natural state of the cross section taken from line to line VI-VI, and Figure 7 is a perspective view of the urine-absorbent pad 1. As shown in FIG. 1 , the urine-absorbent pad 1 according to one embodiment of the present invention (an example of the absorbent article of the present invention) has an elongated outer shape having a length direction L and a width direction W when viewed from above. Specifically, the shape has an approximately sand clock-shaped outer shape that is tapered inward toward the inward side of the width direction W at approximately the center portion in the longitudinal direction L (that is, the portion corresponding to the intercrotch area A _C ). In addition, in the present invention, the outer shape of the absorbent article is not limited to this aspect. If the length dimension in the longitudinal direction L is an elongated shape longer than the width dimension in the width direction W, it can be adapted to various uses. Any vertical shape (such as rectangle, oval, gourd shape, etc.).

The urine-absorbent pad 1 of this embodiment, as shown in Figures 1 and 2, consists of an absorption body part 2 and an absorbent body 21. The absorbent body 21 has a longitudinal direction L corresponding to the urine-absorbent pad 1, Each of the longitudinal direction, width direction and thickness direction of the width direction W and the thickness direction T has an abdominal area _{AF ,} an intercrotral area A _C and a back area A _B in the aforementioned longitudinal direction; and is located in the width direction W of the absorbent body part 2 It is composed of a pair of side sheets 4, 4 (leakage prevention wall portions) extending continuously across both ends of the longitudinal direction L.

As shown in Figures 1 to 6, the absorbent main part 2 is equipped with, in the thickness direction T, a liquid-permeable surface sheet 22 located on the skin-facing side and a liquid-impermeable surface sheet 22 located on the non-skin-facing side. The back sheet 23 and the two-layered absorbent layer (specifically, the first absorbent layer 21A located on the opposite skin-facing side and the non-skin-facing absorbent layer) located between these sheets and capable of absorbing and retaining excretion fluids such as urine. The absorbent body 21 of the second absorbent layer 21B) on the skin-facing side can absorb and retain excretion fluids such as urine excreted from the user while permeating in the thickness direction T.

On the other hand, the pair of side sheets 4 and 4 (leakage-preventing wall portions) are located on the skin-facing side of the absorbent body portion 2 (more specifically, the surface sheet 22 as shown in Figures 1 to 6 The skin-facing side) faces the absorbent body part 2, is located at both ends of the absorbent body part 2 in the width direction W and spans both ends of the aforementioned longitudinal direction L (that is, the abdominal area in the longitudinal direction L). side end portions and back area side end portions) are arranged to extend continuously. Furthermore, a pair of side sheets 4, 4 respectively have: located on the inner side of the width direction W of the absorbent body portion 2 and not joined to the aforementioned absorbent portion. The free end of the surface of the main body part 2 on the skin-facing side and the fixed end part located on the outer side in the width direction W of the absorbing main part 2 and joined to the surface of the absorbing main part 2 on the skin-facing side. When the urine-absorbent pad 1 is worn, the free ends of the pair of side sheets 4, 4 are the end edges on the inward side in the width direction W (that is, the inward end edges in the width direction W). ) are a pair of leakage-proof wall portions that stand up toward the skin-facing side and function as leakage-proof walls that prevent side leakage of excretion fluids such as urine discharged from the user.

In addition, as shown in FIG. 1 , the pair of side sheets 4 and 4 are respectively connected to the urine-absorbent pad 1 in the vicinity of the inner end edge portion in the width direction W. Five (plural) elastic members EL that shrink in the longitudinal direction L and promote the erection of the inner end edges in the width direction W of the pair of side sheets 4 and 4 are arranged along the longitudinal direction L.

In addition, in the urine-absorbent pad 1 of this embodiment, the leakage-proof wall portion formed by the pair of side sheets 4, 4 has, as shown in Figures 2 to 5, respectively: and the above-mentioned absorbent body portion. 2. The base 41 facing and fixed to the absorbent body part 2, and the skin-facing side of the base 41 is connected to the inner end edge of the base 41 in the width direction W and faces the skin when worn. The first wall portion 42 rises on the face side (more specifically, the portion on the inner side in the longitudinal direction L rises toward the skin-opposing face side), and the skin-opposing face side of the first wall portion 42 is separated from the skin-opposing face side. The outer edge of the first wall portion 42 in the width direction W is connected and stands up toward the skin-facing side when worn (more specifically, the inner portion in the length direction L stands up toward the skin-facing side). ), and in the aforementioned abdominal region A _F and the aforementioned back region A _B , it has a second wall portion 43 that includes the end edge of the side sheet 4 in the longitudinal direction L and has a predetermined length in the longitudinal direction and a predetermined width in the width direction. The liquid flow control part F _C is arranged lengthwise and controls the flow of excretion liquid discharged from the user in the width direction W and the thickness direction T by controlling the erection structure of the first wall part 42 and the second wall part 43 . Furthermore, as shown in FIG. 5 , this liquid flow control part F _C includes: joining the base part 41 and the first wall part 42 (more specifically, joining the base part 41 and the first wall part 42 in each longitudinal direction L The first joint portion 44 has a predetermined length in the longitudinal direction; and the first wall portion 42 and the aforementioned second wall portion 43 are joined (more specifically, the first wall portion 42 and the outer portion of the second wall portion 43 in each longitudinal direction L) and the longitudinal length of the inward end edge in the width direction W is greater than the longitudinal length of the first joint portion 44, the width direction W The second joint portion 45 whose length in the longitudinal direction of the outer end edge is less than full. Furthermore, among the pair of leakage-proof wall portions, the portion located inward in the longitudinal direction L relative to the liquid flow control portion _FC (in the above-described embodiment, the liquid flow control portion _FC and the liquid flow control portion FC in the abdominal region _AF The leakage-proof wall portion between the liquid flow control portions F _C in the back area A _B ) is not a structure that controls the erection structure (that is, a structure that controls the flow of excretion liquid in a specific direction) like the liquid flow control portion F _C. Instead, it is formed as an upright non-control part _SP having the same structure and function as a normal leakage prevention wall (see Fig. 2 ).

Furthermore, as shown in FIG. 1 , the back region side end edge 21E ₁ of the absorber 21 in the longitudinal direction L is further inward than the second joint portion 45 in the width direction W when viewed from above. Among the end edges, the inner end 45E _i located on the innermost side in the longitudinal direction L is further to the outer side in the longitudinal direction L, and both end edges in the width direction W of the absorber 21 (i.e., the One side end edge 21E ₃ and the other side end edge 21E ₄ ) are located on the outer side in the width direction W than the inward side end edge in the width direction W of the back area A _B base portion 41, and are arranged on the absorbent body. Within Department 2.

Furthermore, in the urine-absorbent pad 1 of this embodiment, as shown in FIG. 1 , the abdominal region side end edge 21E ₂ of the absorbent body 21 in the longitudinal direction L is located closer than Among the inner end edges in the width direction _W of the second joint portion 45 arranged in the abdominal region A _F , the inner end portion 45E _i is located on the innermost side in the length direction L. The outer side in the longitudinal direction L and both end edges in the width direction W of the absorbent body 21 (that is, one end edge 21E ₃ and the other end edge 21E ₄ in the width direction W) are in the abdominal region A _F is located in the outer side of the width direction W than the inward side edge in the width direction W of the base part 41, and is arranged in the absorption main body part 2.

The urine-absorbent pad 1 of this embodiment is particularly equipped with "a pair of leakage-proof wall parts having the above-mentioned base part 41, the first wall part 42 and the second wall part 43. At least in the back area A _B , it has The liquid flow control part F _C includes _: a first joint part 44 which joins the base part 41 and the first wall part 42 and has a predetermined length in the longitudinal direction; and a first joint part 44 which joins the first wall part 42 and the second wall part 43 and has a width The longitudinal length of the inner end edge in the direction W is greater than or equal to the longitudinal length of the first joint portion 44, and the longitudinal length of the outer end edge in the width direction W is less than the longitudinal length of the second joint portion 45; and, In the above-mentioned absorber 21, when viewed from above, the back region side end edge _21E1 in the longitudinal direction L of the absorber 21 is located further inward than the end edge on the width direction W of the second joint portion 45. The innermost inner end portion 45E _i in the longitudinal direction is further outward in the longitudinal direction L, and is positioned such that both end edges in the width direction W of the absorber 21 are located farther than the base portion 41 in at least the back region A _B. The end edge on the inner side in the width direction W is arranged in a specific structure in the absorbing body part 2 on the outer side in the width direction W. Therefore, in the above-mentioned liquid flow control part F _C , as shown in FIG. 2 It is shown that the first wall portion 42 and the second wall portion 43 can form a specific standing structure having a sufficient standing height and sufficient durability against excretion discharged from the user. Thereby, the urine-absorbent pad 1 is configured so that the excretion discharged from the user and flowing outward in the longitudinal direction L and the width direction W on the surface of the absorbent body 2 on the skin-facing side is directed toward the surface formed on the absorbent body 2 . The surface sheet 22 of the absorbent body 2 can pass through the hollow portion F _S between the specific raised structure of the above-mentioned liquid flow control portion F _C and the surface of the absorbent body portion 2 on the skin-facing side while sealing and intercepting it. The excretion liquid that is absorbed toward the absorber 21 in the absorbent body part 2 and flows toward the outer side in the longitudinal direction L can be guided toward the inward side in the width direction W by the above-mentioned liquid flow control part _FC . It is absorbed through the surface sheet 22 of the absorbent main part 2 toward the absorbent body 21 in the absorbent main part 2 . As a result, the urine-absorbent pad 1 can reliably prevent side leakage of excretion fluid, and it is also difficult for the urine fluid to leak from the back side in the longitudinal direction L.

Furthermore, in the urine-absorbent pad 1 of this embodiment, each liquid flow control portion _FC in the pair of leakage-proof wall portions is arranged not only in the back area _AB but also in the abdominal area _AF , and the absorbent body The abdominal region side end edge 21E ₂ in the longitudinal direction L of 21 is located inward of the end edge in the width direction W of the second joint portion of the liquid flow control portion _FC arranged in the abdominal region _AF . The inner end portion 45E _i located on the innermost side in the longitudinal direction L is further to the outer side in the longitudinal direction L, and both end edges in the width direction W of the absorber 21 (that is, one end edge in the width direction W 21E ₃ and the other side end edge 21E ₄ ) are located on the outer side in the width direction W than the inward side end edge in the width direction W of the base portion 41 in the abdominal region _AF , and are arranged on the absorbing main body portion 2, so even if the user sleeps in a prone state (that is, the excretion fluid discharged from the user tends to flow toward the abdomen side in the longitudinal direction L), etc., it can be arranged on the abdomen The liquid flow control part _FC in the area _AF reliably prevents side leakage of excretion fluid in the abdominal area _AF and makes it difficult to leak from the abdominal side in the longitudinal direction L.

Hereinafter, various members constituting the absorbent article of the present invention will be described in further detail using the urine-absorbent pad 1 of the above-described embodiment.

<Absorbent body part> In the urine-absorbent pad 1 according to one embodiment of the present invention, the absorbent body part 2, as shown in Figure 1, has: when viewed from above, it has a length direction L corresponding to the urine-absorbent pad 1. , the longitudinal direction, the width direction and the thickness direction of the width direction W and the thickness direction T, and has a vertically elongated outer shape that becomes the shape of the urine-absorbent pad 1 when viewed from above (that is, the intercrotch area A corresponding to the length direction L The portion _C is an approximately sand clock-shaped outer shape that narrows toward the inward side in the width direction W). In addition, in the present invention, the shape of the outer shape of the absorbing main body is not limited to the aspect of this embodiment. If the length dimension in the longitudinal direction is an elongated shape longer than the width dimension in the width direction, it can be adapted to various uses, etc. Adopt any longitudinal shape (such as rectangle, oval, gourd shape, etc.). Furthermore, in the present invention, various dimensions such as the length in the longitudinal direction, the length in the width direction, and the length in the thickness direction (thickness) of the absorbent main body are those that have predetermined absorptivity and softness and conform to the shape of the user's body. There are no particular restrictions on the suitability, etc., and any size can be adopted according to the size and gender of the wearer, the object to be absorbed, and the intended use.

In the above-mentioned embodiment, as shown in Figures 1 to 6, the main components of the absorbent main part 2 in the thickness direction T include: a liquid-permeable surface sheet 22 located on the skin-facing side; and The liquid-impermeable back sheet 23 is located on the non-skin-facing side, and the two-layer absorption layer (i.e., the first absorption layer 21A and the second absorption layer 21A) is located between these sheets and can absorb and retain excretion fluids such as urine. 2 absorbent layer 21B), in this embodiment, further, in this embodiment, a liquid-impermeable lining film is provided on the skin-facing side of the back sheet 23 (that is, between the absorbent body 21 and the back sheet 23). twenty four.

Hereinafter, various structural members that can be used in the absorbent main part of the absorbent article of the present invention will be described in further detail using the urine-absorbent pad 1 of the above-described embodiment.

[Surface Sheet] In the above-described embodiment, the surface sheet 22 arranged on the skin-facing side of the absorbent body part 2 has: as shown in Figures 1 and 2, when viewed from above, from the absorbent body part The abdominal region side end in the longitudinal direction L in 2 extends across the back region side end, and spans from the vicinity of one side end edge 21E to the other side in the width direction W of the absorbent body ₂₁ in the absorbent body part 2 The side edge 21E extends in the vicinity of ₄ and has a vertically long, approximately rectangular outer shape that is long in the longitudinal direction L as a whole. Furthermore, in the absorbent article of the present invention, the size and shape of the surface sheet are such that most of the surface of the skin-facing side of the absorbent body (for example, a portion exceeding 50% of the surface area of the skin-facing side of the absorbing body) etc.) is not particularly limited, and any size and shape can be adopted to suit various uses.

In the above-described embodiment, the surface sheet 22 is disposed on the skin-facing surface that can directly contact the user's skin surface in the thickness direction T of the absorbent body part 2, as shown in Figures 1 to 6. On the other side, the liquid-permeable sheet may be configured to quickly move excretion fluid such as urine discharged from the user toward the absorber 21 disposed on the non-skin-facing side of the surface sheet 22 .

In the present invention, the liquid-permeable sheet that can be used as a surface sheet is not particularly limited as long as it has various characteristics that can be used as a surface sheet of absorbent articles (such as liquid permeability, skin feel, softness, strength, etc.) , for example, fiber-based sheets such as breathable nonwoven fabrics, spunbonded nonwoven fabrics, point-bonded nonwoven fabrics, and woven fabrics, and perforated films in which a plurality of holes are added to a resin film, etc. can be optimally used. Furthermore, the fiber-based sheet mentioned above may be hydrophilized using a surfactant. Among such liquid-permeable sheets, fiber-based sheets are preferred because of their excellent liquid permeability, softness, strength, etc. Furthermore, non-woven fabrics such as breathable nonwoven fabrics and spunbonded nonwoven fabrics are more preferred.

When the above-mentioned fiber-based sheet is used as the surface sheet, the constituent fiber is not particularly limited. For example, olefin-based resins such as polyethylene, polypropylene, etc.; polyethylene terephthalate, polylactic acid, etc. can be used. The resin fibers are made of thermoplastic resins such as polyester resins. These resins may be used alone or in combination of two or more types of resins. Furthermore, the structure of the resin fiber is not particularly limited. For example, composite fibers such as core-sheath fiber, special cross-section fiber, three-dimensional crimp fiber, etc. may be used.

Furthermore, the above-mentioned resin fiber may be subjected to a hydrophilization treatment such as a treatment using a surfactant and a hydrophilization agent (for example, mixing a surfactant into the interior of the fiber, applying a surfactant to the surface of the fiber, etc.), and , optional additives such as deodorants and antibacterial agents may also be included. Moreover, as these additives, one type of additive may be used alone, or two or more types of additives may be used in combination.

In the present invention, the basis weight of the liquid-permeable sheet that can be used as the surface sheet is not particularly limited as long as it has predetermined liquid permeability, flexibility, and strength. For example, it is in the range of 5 g/m ² to 100 g/m ² , preferably within the range of 10g/m ² to 50g/m ² . In addition, the thickness of the liquid-permeable sheet is not particularly limited as long as the liquid-permeable sheet functions as a surface sheet of an absorbent article, and any thickness can be adopted depending on the desired liquid permeability, softness, strength, etc.

The structure of the liquid-permeable sheet that can be used as a surface sheet is not particularly limited as long as it has predetermined liquid permeability, softness, and strength. For example, it can be optimally used: one with a nearly flat structure and the side opposite to the skin. The surface has a concave and convex structure, etc.

[Back Sheet] In the above-described embodiment, the back sheet 23 disposed on the non-skin-facing side of the absorbent body 2 has: as shown in Figures 1 and 2, viewed from above, from the absorbent body The abdominal region side end in the length direction L of the absorbent body part 2 extends across the back region side end, and extends from one end in the width direction W of the absorbent body part 2 across the other end, and is integrally The absorbing main body 2 has the same vertically long outer shape (that is, the portion corresponding to the crotch area A _C in the longitudinal direction L has an approximate sand clock-shaped outer shape that tapers toward the inward side in the width direction W). In addition, in the absorbent article of the present invention, the size and shape of the back sheet are not particularly limited as long as it can cover at least the entire surface of the non-skin-facing side of the absorber, and any size and shape can be adopted according to various uses. .

In the above-described embodiment, the back sheet 23 is arranged on the non-skin-facing surface side of the absorbent body 2 in the thickness direction T, as shown in FIGS. It is composed of a liquid-impermeable sheet that prevents urine and other excretion fluids from leaking to the outside.

In the present invention, the liquid-impermeable sheet that can be used as a back sheet has various properties that can be used as a back sheet of absorbent articles (for example, liquid impermeability, flexibility, strength, and preferably breathability, etc.) It is not particularly limited, and for example, resin films such as polyethylene and polypropylene; laminates in which a nonwoven fabric is bonded to a resin film; nonwoven fabrics such as hydrophobic nonwoven fabrics and laminated nonwoven fabrics (such as SMS nonwoven fabrics), etc. can be optimally used. In addition, the back sheet is a case where the above-mentioned nonwoven fabric is used, and the type of nonwoven fabric is not particularly limited. For example, any nonwoven fabric such as spunbonded nonwoven fabric, spot bonded nonwoven fabric, meltblown nonwoven fabric, SMS nonwoven fabric, etc. can be used. Furthermore, the constituent fibers of the nonwoven fabric are not particularly limited, and for example, thermoplastic resins such as polyolefin resins such as polyethylene and polypropylene; polyester resins such as polyethylene terephthalate can be used. The resin fiber may be composed of one type of resin alone, or two or more types of resins may be used in combination. Furthermore, the structure of the resin fiber is not particularly limited, and for example, various composite fibers such as core-sheath fiber may be used.

In the present invention, the basis weight of the liquid-impermeable sheet (such as nonwoven fabric, etc.) that can be used as the back sheet is not particularly limited as long as it has predetermined liquid impermeability (leakage prevention properties) and strength, for example, 5 g/m In the range of ² to 100g/m ² , preferably in the range of 10g/m ² to 50g/m ² . In addition, the thickness of the liquid-impermeable sheet is not particularly limited as long as the liquid-impermeable sheet can function as a back sheet of an absorbent article. It can meet the desired liquid impermeability, softness, strength, and breathability. etc. using any thickness.

In the above-described embodiment, as shown in FIGS. 2 to 6 , on the skin-facing side of the back sheet 23 (that is, between the absorbent body 21 and the back sheet 23 ), there is arranged a structure with the back sheet 23 The liquid-impermeable lining film 24 is substantially the same size and shape. The lining film 24 is made of a thermoplastic resin film such as polyethylene. Like the back sheet 23 , it prevents excretion such as urine from the user from passing through, so that the excretion does not flow toward the user. Clothes and other functions that leak out. In addition, if the absorbent article is provided with such a lining film, the leakage of excretion fluids such as urine can be more effectively suppressed. However, since such a lining film is not an essential component of the absorbent article of the present invention, the present invention The absorbent article of the invention does not need to have such a lining film.

[Absorbent Body] In the above-described embodiment, the absorbent body 21 has, as shown in FIG. 1 , an abdominal region A _F (more specifically, when viewed from above) in the longitudinal direction L of the absorbent body part 2 (near the end portion on the abdominal region side in the longitudinal direction L) extends across the back region A _B (more specifically, near the end portion on the back region side in the longitudinal direction L), and extends from the width direction in the width direction W of the absorbent body portion 2 The first area A _W1 (more specifically, the vicinity of one end in the width direction W) extends across the second area A _W2 in the width direction (more specifically, the vicinity of the other end in the width direction W), and the entire The portion that is long in the longitudinal direction L and corresponds to the crotch area A _C in the longitudinal direction L has an approximate sand clock-shaped outer shape that is tapered toward the inward side in the width direction W. In addition, in the absorbent article of the present invention, the size and shape of the absorbent body is not limited to the aspect of this embodiment. At least the length dimension in the longitudinal direction is from the abdominal region across the back region in the longitudinal direction of the absorbent main part. If it is an elongated shape that is as long as possible, any vertically elongated shape (such as rectangle, oval, gourd shape, etc.) can be adopted according to various uses.

In the above-described embodiment, the absorbent body 21 is disposed between the front sheet 22 and the back sheet 23 (more specifically, in the thickness direction T of the absorbent body part 2 as shown in FIGS. 1 to 6 , between the surface sheet 22 and the lining film 24), a two-layer absorption layer (i.e., the first absorption layer 21A and the second absorption layer) has the function of absorbing and retaining the user's excretion fluid such as urine that passes through the surface sheet 22. 21B) consists of.

These two-layer absorption layers are a first absorption layer 21A relatively arranged on the skin-facing side and a second absorption layer 21B relatively arranged on the non-skin-facing side in the absorbing body part 2. The above-mentioned absorber 21 is formed into an integrated body by being joined by any joining means (not shown) such as a heat-fusible adhesive. Among the two absorbent layers constituting the absorbent body 21, the first absorbent layer 21A has: when viewed from above, the abdominal region A _F (more specifically, the longitudinal direction The vicinity of the abdominal side end of L) extends across the back area A _B (more specifically, the vicinity of the back side end of the longitudinal direction L), and extends from the width direction first area A in the width direction W of the absorbent body part 2 _W1 (more specifically, the vicinity of one end in the width direction W) extends across the second width area A _W2 (more specifically, the vicinity of the other end in the width direction W), and extends entirely in the length direction L The portion that is long and corresponds to the crotch area A _C in the longitudinal direction L is composed of an absorbent member with an approximate sand clock-shaped outer shape that narrows toward the inward side in the width direction W. In this embodiment, the first absorption layer 21A has a shape that forms the outer shape of the absorber 21 when viewed from above.

On the other hand, the second absorbent layer 21B is formed by "having: an abdominal region A _F in the longitudinal direction L of the absorbent main body 2 when viewed from above (more specifically, the vicinity of the abdominal side end portion in the longitudinal direction L) Extending across the back region A _B (more specifically, the vicinity of the back side end portion in the longitudinal direction L), in the width direction W, both end edges of the width direction W are located closer to each other than the first absorbent layer 21A. Both end edges in the width direction W (that is, one end edge 21E ₃ and the other end edge 21E ₄ in the width direction W) extend further inward in the width direction W, and the entire body has an approximately rectangular shape long in the length direction L. It is composed of absorbent members with "outer shape". By forming the second absorbent layer 21B disposed on the relatively non-skin-facing side, the user is less likely to perceive the step difference at the edge portions of the first absorbent layer 21A and the second absorbent layer 21B in the width direction W. .

In the present invention, the absorbent member that can be used as the first absorbent layer and the second absorbent layer constituting the above-mentioned absorbent body is not particularly limited as long as it can absorb and retain excretion fluids such as urine, and any material known in the art can be used. of any absorbent member. Such an absorbent member can be used, for example, in which an absorbent core made of any absorbent material is covered with a core wrapping sheet such as hydrophilic tissue paper. Furthermore, the absorbent material constituting the above-mentioned absorbent core can be, for example, hydrophilic fiber, highly absorbent copolymer, etc., and more specifically, cellulose made of ground pulp, cotton, rayon, acetate, etc. can be used. Fibers; granular materials composed of highly absorbent copolymers such as sodium acrylate copolymer, etc. As these absorbent materials, one type of absorbent material may be used alone, or two or more types of absorbent materials may be used in combination. In addition, the first absorbent layer and the second absorbent layer may use absorbent members with the same structure, or absorbent members with different structures.

In the above-described embodiment, the first absorbing layer 21A, as shown in FIGS. 1 and 6 , has a central portion in the width direction W of at least the crotch area A _C (i.e., in the direction of the length) when viewed from above. The through-hole _21AS penetrating the first absorbent layer 21A in the thickness direction T, and the second absorbent layer _21B between the crotch as shown in Figure 1 The central portion of the area A _C in the width direction W and a position overlapping the through hole 21A _S of the first absorption layer 21A in the thickness direction T has a smaller size and shape than the through hole 21A _S in plan view and has the second The absorption layer 21B has a through hole 21B _S penetrating in the thickness direction T. These through-holes 21A _S and 21B _S are formed to communicate in the thickness direction T, penetrate the entire absorber 21 in the thickness direction T, and have the opening areas differ in steps in the thickness direction T. If the absorbent body has such through holes, it can promote the absorption of excretion liquid in the thickness direction T, so it can exhibit more excellent absorption performance (especially absorption speed).

Furthermore, in the absorbent article of the present invention, the absorbent body does not necessarily have to be composed of two absorbent layers as in the above-mentioned embodiment. The absorbent body must be composed of an absorbent member with a single-layer structure, or an absorbent member. It may be composed of an absorbent member having a multi-layer structure of three or more layers. The basis weight, thickness, etc. of the absorbent member that can be used as the absorbent layer constituting the absorbent body does not apply if the absorbent member has various properties (such as absorbency, softness, etc.) that can function as the absorbent body of the absorbent article. Special restrictions, any basis weight and thickness can be used.

In the above-described embodiment, the absorbent body 21 has: in the crotch area A _C , both end edges in the width direction W (that is, one side end edge _21E3 and the other side end edge 21E in the width direction W) are ₄ ) It has an outer shape that shrinks toward the inward side in the width direction W at a portion located further inward in the width direction W than the inward edge in the width direction W of each base portion 41 of the pair of leakage-proof wall portions. shape. If the absorber 21 has such an outer shape, the influence of the rigidity of the absorber 21 in the crotch area A _C is small, and the degree of freedom of deformation and movement of the pair of leakage prevention wall portions becomes higher. Therefore, when the user wears the urine-absorbent pad 1, the pair of leakage-proof wall portions can be closely adhered to the shape of the user's body (the shape of the crotch portion). Therefore, the urine-absorbent pad 1 provided with the absorbent body 21 having such an external shape makes it difficult to form a gap between the user's body (crotch area) and the pair of leakage-proof wall portions, so that the urine-absorbent pad 1 can be used more reliably. Prevent side leakage of excretion fluid.

Furthermore, in the above-described embodiment, the absorbent body 21 has: in the abdomen region A _F and the back region A _B , both end edges in the width direction W of the absorbent body 21 (that is, one side end in the width direction W The edge 21E ₃ and the other side end edge 21E ₄ ) are located at a portion further outward in the width direction W than the outer side end edge in the width direction W of each second joint portion 45 of the pair of leakage prevention wall portions. configuration. If the absorbent body 21 is arranged in this way, even if the user sleeps in the horizontal direction (that is, the excretion discharged from the user is likely to be directed toward the direction of gravity (more specifically, toward the outside in the width direction W of the absorbing body portion 2 direction)), the excretion liquid flowing toward the outer side in the width direction W can be reliably absorbed by the absorber 21, and side leakage of the excretion liquid can be more reliably prevented.

Furthermore, in the absorbent article of the present invention, each liquid flow control portion of the pair of leakage-proof wall portions is required to be arranged at least in the back region. However, in the urine-absorbent pad 1 of the above-described embodiment, The liquid flow control parts F _C are respectively arranged in the abdominal area A _F and the back area A _B . Furthermore, the absorbent body 21 is, as shown in FIG. 1 , so that the absorbent body 21 is centered in the longitudinal direction L when viewed from above. The abdominal region side end edge 21E ₂ is located at the innermost position in the length direction L among the inner side end edges in the width direction W of the second joint portion 45 of the liquid flow control portion _FC arranged in the abdominal region _AF. The inner end portion 45E _i of the square side is further to the outer side in the longitudinal direction L, and is such that both end edges in the width direction W of the absorber 21 (that is, one side end edge _21E in the width direction W and the other side The side edge 21E ₄ ) is located in the abdominal region _AF on the outer side in the width direction W than the inward side edge in the width direction W of the base 41, and is arranged in the absorption main body 2 . If the absorbent body 21 is arranged in this way, even when the user is sleeping in a prone state (that is, the excretion fluid discharged from the user is easily directed toward the direction of gravity (more specifically, toward the width direction W of the absorbing body portion 2 In the case of flow in the outer direction), the side leakage of excretion fluid in the abdominal area _AF can be reliably prevented by the liquid flow control part _FC disposed in the above-mentioned abdominal area _AF , and It is also difficult to leak from the abdominal side in the longitudinal direction L.

[Embossed Portion] In the above-described embodiment, the absorbent body portion 2 has the width-direction first area A W1 and the width-direction area A _W1 which are respectively arranged by the width-direction central axis CL extending in the longitudinal direction _L. A pair of embossed portions 3, 3 are dented in the direction of the second area A _W2 and in the thickness direction T from the skin-facing surface. Such a pair of embossed parts 3, 3 each has a linear plan view shape extending in the longitudinal direction L in the crotch area A _C as shown in FIG. 1 , and further, in the absorbing main part 2 In the thickness direction T, the surface sheet 22 and the absorbent body 21 are pressed and integrated by being recessed from the skin-facing side. In addition, such an embossed portion can be formed by pressing the absorbent main portion from the skin-facing surface toward the thickness direction T using any heating or non-heating embossing processing means.

In this embodiment, the length of the pair of embossed portions 3 and 3 in the width direction from the embossed portion 3 to the inward end edge in the width direction W of the base portion 41 and the first wall portion 42 is The total length of the width direction length and the width direction length of the second wall portion 43 is longer than the width direction length from the above-mentioned width direction central axis _CL to the embossed portion 3 (specifically, to the width direction center line of the embossed portion 3 ) is arranged to be longer in the width direction. If the pair of embossed portions 3, 3 are arranged in this way, the pair of embossed portions 3, 3 become the starting point of the meandering, and the widthwise central portion extending along the widthwise central axis _CL of the absorbent body portion 2 is directed toward The protrusion of the skin-facing side (that is, the cross-sectional shape along the longitudinal central axis C _W is approximately W-shaped) makes the absorbent body part 2 easy to deform, and the height of the above-mentioned pair of leakage-proof wall parts is easily The protruding height is higher than the protruding height of the widthwise central portion protruding toward the skin-facing side. Therefore, the skin-facing surface in the widthwise central portion of the absorbent body portion 2 can be in close contact with or close to the user's intercrotch portion, which can be used from the user's perspective. The discharged excretion liquid is easily absorbed toward the absorber 21, and side leakage of the excretion liquid can be more reliably prevented.

In addition, this effect is achieved if a pair of embossed parts can serve as a starting point for the bending of the absorbing main body part. This can be achieved in the same manner even in aspects other than the above-mentioned embodiments. Therefore, in the present invention, a pair of embossed parts can be used as a starting point for bending. The flower portion is not necessarily formed integrally with the surface sheet and the absorbent body as in the above-described embodiment. For example, only the absorbent body may be formed.

In the present invention, the shape of the embossed portion when viewed from above is not particularly limited. In addition to the linear shape in the above-mentioned embodiment, any shape such as wavy, wavy, curved, zigzag, etc. can be adopted. In addition, since such an embossed part is not an essential component of the absorbent article of the present invention, the absorbent article of the present invention may not have such an embossed part.

<Leakage-proof wall portion> In the urine-absorbent pad 1 of the above-described embodiment, a pair of leakage-proof wall portions are formed by being located at both ends of the absorption body portion 2 in the width direction W and spanning the length direction L. It is formed by a pair of side sheets 4, 4 extending continuously from both ends. In addition, in such a pair of side sheets 4, 4, a piece 5 capable of shrinking the pair of side sheets 4, 4 in the length direction L is arranged near the inner end edge portion in the width direction W. The elastic member EL of the strip.

Hereinafter, various structural members that can form a pair of leakage-preventing wall portions in the absorbent article of the present invention will be described in further detail using the urine-absorbent pad 1 of the above-described embodiment.

[Side Sheets] In the above-described embodiment, the pair of side sheets 4, 4 are attached to the skin-facing side of the absorbent main body 2 (more specifically, the skin-facing side of the surface sheet 22). It is arranged at both ends of the absorbent body part 2 in the width direction W. When the urine-absorbent pad 1 is worn, the inner edge in the width direction W can stand up and function as a leakage-proof wall. It is long in the length direction L. It is formed of a pair of strip-shaped liquid-impermeable sheets.

In the present invention, the belt-shaped liquid-impermeable sheet that can be used as a side sheet has various properties that can be used as a side sheet of an absorbent article (for example, liquid impermeability and skin feel, softness, strength ( In particular, the strength when wet) is not particularly limited, and for example, hydrophobic non-woven fabrics (such as spunbond non-woven fabrics, point-bonded non-woven fabrics, SMS non-woven fabrics, etc. that are hydrophobic or endowed with hydrophobic properties) can be used; liquid impermeable Plastic films made of synthetic resin; laminates of these, etc.

The outer shape, basis weight, thickness, etc. of the strip-shaped liquid-impermeable sheet that can be used as the side sheet are not particularly limited as long as they do not hinder the effects of the present invention. The desired liquid-impermeable and skin-touch properties can be met. The feel, softness, etc. can be adjusted to any shape, basis weight, thickness, etc.

In the above-mentioned embodiment, the pair of side sheets 4 and 4 can be formed so that when the urine-absorbent pad 1 is worn, the free end, that is, the inner edge in the width direction W, stands sideways toward the skin-opposing surface. A pair of leak-proof wall portions that function as leak-proof walls to prevent side leakage of excretion fluids such as urine discharged from the user. Each of these pairs of leakage-proof wall portions has: as described above, a base portion 41 facing the absorbent body portion 2 and fixed to the absorbent body portion 2; and a portion of the base portion 41 on the skin-facing side of the base portion 41. The inward edge in the width direction W is connected and the inward portion in the length direction L when worn is the first wall portion 42 that rises toward the skin-facing surface side, and the skin-facing portion of the first wall portion 42 The second wall portion 43 whose face side is connected to the outer edge in the width direction W of the first wall portion 42 and which has the inner portion in the longitudinal direction L raised toward the skin-facing side when worn, further , the abdominal region A _F and the back region A _B are provided with the above-mentioned liquid flow control portion F _C arranged to include the edge in the longitudinal direction L of the side sheet 4 and have a predetermined length in the longitudinal direction and a predetermined length in the width direction, In addition, a standing non-controlling portion _SP having the same structure and function as a normal leakage prevention wall is provided in a portion located inward in the longitudinal direction L from the liquid flow control portion _FC .

The liquid flow control part _FC includes, as described above, the first joint part 44 that joins the outer portions of the base part 41 and the first wall part 42 in the longitudinal direction L and has a predetermined length in the longitudinal direction; and The outer portions of the first wall portion 42 and the second wall portion 43 in the longitudinal direction L are joined together, and the longitudinal length of the inner end edge in the width direction W is the longitudinal length of the first joint portion 44 As described above, the second joint portion 45 whose length in the longitudinal direction of the outer edge in the width direction W is less than the full length can control the erect structure of the first wall portion 42 and the second wall portion 43 described above, so that the user can The discharged excretion fluid is trapped in the cavity F _S formed between the upright structure of the liquid flow control part F _C and the surface of the absorbent body part 2 on the skin-facing side, and is directed outward in the longitudinal direction L. The excretion fluid flowing sideways is induced inward in the width direction W.

Furthermore, the pair of side sheets 4 and 4 are respectively joined to the absorbent body 21 (more specifically, the first absorbent layer 21A) on the outer side in the width direction W than the liquid flow control part Fc. , the joint portion (hereinafter, also referred to as the "third joint portion") is arranged in the width direction W with both end edges in the width direction W of the absorber 21 (that is, in the width direction W of the absorber 21 The one side end edge 21E ₃ and the other side end edge 21E ₄ ) overlap in the thickness direction T or are located further inward in the width direction W than the two end edges. The joint portion between the pair of side sheets 4, 4 and the absorber 21, that is, the third joint portion, becomes the leakage prevention wall when the pair of side sheets 4, 4 stand up on the skin-facing side to form a leakage prevention wall. The starting point of the excretion liquid controlled by the liquid flow control part Fc may remain. However, this third joint part is arranged in the width direction W of the absorbent body 21 as described above. The position where both end edges overlap in the thickness direction T or the position further inward than the both end edges in the width direction W (that is, the position where the two end edges overlap in the thickness direction T or the position which is wider than the third joint part If the absorbent body 21 extends in the width direction W to the position on the outer side of the direction W), the excretion remaining in the third joint portion or its vicinity will be directed outward in the width direction W even if it passes through the surface sheet 22 and the like. Bleeding on the square side can be achieved by the extended portion of the absorbent body 21 extending to a position that overlaps the third joint portion in the thickness direction T or a position further outward in the width direction W than the third joint portion. By absorbing this excretion fluid, side leakage of excretion fluid can be more reliably prevented. In addition, in the present invention, the above-mentioned arrangement form of the third joint portion can be applied to either or both of the abdominal area and the back area. It is at least applicable to the back area where the user's body pressure is easily applied. good. This back area is an area where excretion leakage is likely to occur due to the user's body pressure, so the effect produced by the arrangement of the above-mentioned third joint portion can be more effectively exerted.

Moreover, in the present invention, the joining form of the pair of side sheets and the absorbent main part is not limited to this aspect. For example, the above-mentioned pair of side sheets are located outside the liquid flow control part in the width direction. The sides may be joined to a liquid-impermeable lining film or a back sheet. In this case, the liquid-impermeable side sheets and lining films or back sheets are joined to prevent excretion from flowing in the width direction. The outer side leaks out, so side leakage of excrement can be more reliably prevented.

In the present invention, the joining means for forming the above-mentioned first joining portion, second joining portion, third joining portion, etc. are not particularly limited as long as the effects of the present invention are not hindered. For example, Any joining means such as adhesion means such as heat fusible adhesive or welding means such as ultrasonic welding can be used.

In the above-described embodiment, the inner end edge of the first joint portion 44 of the liquid flow control portion _FC in the longitudinal direction L extends linearly along the width direction W. In this way, if the inward end edge of the first joint portion 44 in the longitudinal direction L extends linearly along the width direction W, the inward end edge of the first joint portion 44 in the longitudinal direction L is used as the starting point. The erected structure of the erected first wall part 42 and the second wall part 43 is easily stabilized, and the function of the above-mentioned liquid flow control part _FC can be exerted more reliably.

Furthermore, in this embodiment, as described above, the liquid flow control part F _C is arranged in the abdominal area A _F and the back area A _B respectively, and the absorbent body 21 is located on the abdominal area side in the longitudinal direction L when viewed from above. The end edge 21E ₂ is located further outward in the length direction _L than an inner end portion 45E i located on the innermost side in the length direction L among the inward side end edges in the width direction W of the second joint portion 45 , and in such a manner that both end edges of the absorber 21 in the width direction W are located further outward in the width direction W than the inward end edges of the base portion 41 in the width direction W at least in the abdomen region _A F and the back region A _B. , is disposed in the absorbent body part 2, so even if the user sleeps in a prone state (that is, the excretion fluid discharged from the user tends to flow toward the abdomen side in the longitudinal direction L), by The liquid flow control part _FC disposed in the abdominal region _AF can reliably prevent side leakage of excretion fluid in the abdominal region _AF and make it difficult to leak from the abdominal side in the longitudinal direction L.

[Elastic Member] In the above-described embodiment, the pair of side sheets 4, 4 are respectively positioned near the inner end edges in the width direction W as shown in Figure 1. , 4 are contracted in the longitudinal direction L and five (plural) elastic members EL for promoting the erection of the inner end edge in the width direction W are arranged along the longitudinal direction L. In the present invention, a plurality of elastic members arranged on a pair of side sheets can provide lengthwise elasticity toward the absorbent main body portion in an unfolded state (specifically, toward the absorbent main body portion through the pair of side sheets). The shrinkage material is not particularly limited. For example, rubber threads made of natural rubber and flat rubber can be used; thermoplastic elastomers such as urethane and ethylene-vinyl anhydride copolymer (EVA) can be formed into threads or strips. or any elastic member.

The size and shape of the elastic member that can be used in the absorbent article of the present invention is not particularly limited as long as the absorbent main part in the unfolded state of the permeable side sheet can be contracted in the longitudinal direction. Any size and shape can be adopted according to the use and size of the absorbent article. size shape. Such a size and shape means, for example, that the longitudinal length of the elastic member is more than 1/4 of the total length of the absorbent article, preferably more than 1/3, and the fineness is in the range of 200 dtex to 800 dtex, preferably 300 dtex to 700 dtex. within the range. In addition, the number of elastic members is not particularly limited as long as the absorbent body part in the unfolded state of the permeable side sheet can be contracted in the length direction. One or two elastic members may be arranged on each pair of leakage-proof wall parts. , 3 or more, and any number of items.

Furthermore, in the urine-absorbent pad 1 of the above-described embodiment, the five (plural) elastic members EL respectively arranged on the pair of leakage-proof wall portions (side sheets) are located at the The longitudinal length of the elastic member EL located on the outer side in the width direction W is formed to be longer than the longitudinal length of the elastic member EL located on the inner side in the width direction W. In this way, if the longitudinal length of the elastic member EL located on the outer side in the width direction W is formed longer than the longitudinal length of the elastic member EL located on the inner side of the width direction W, the pair of leakage prevention wall portions In the outer portion in the width direction W, the erect structure generated by the first wall portion 42 and the second wall portion 43 is easily maintained, and durability against excretion liquid toward the outer side in the width direction W can be further ensured. On the other hand, in the inner portion in the width direction W of the pair of leakage-proof wall portions (that is, the portion that becomes the starting point of the pair of leakage-proof wall portions and the portion that becomes the top), the deformation and The degree of freedom of movement is increased, and the pair of leak-proof wall parts can be easily adhered to the shape of the body (the shape of the crotch part) while following the shape of the body. Therefore, the urine-absorbent pad 1 in which a plurality of elastic members are arranged can better exhibit the leakage-preventing function of the pair of leakage-preventing wall portions.

In addition, in the urine-absorbent pad 1 of the above-described embodiment, a pair of leakage-proof wall portions respectively have: when viewed from above, they are formed to be contractible in the longitudinal direction L by a plurality of elastic members EL, and are formed in the longitudinal direction L. The shrinkage area in which L extends is formed such that the longitudinal length of the portion located on the inward side of the width direction W is longer than the longitudinal length of the portion located on the outer side of the width direction W. In this way, in each shrinkage area of the pair of leakage-proof wall portions, the longitudinal length of the portion located on the inner side in the width direction W is longer than the longitudinal length of the portion located on the outer side in the width direction W. If the top portion of the pair of leakage-preventing wall portions is difficult to roll up, the leakage-preventing function of the pair of leakage-preventing wall portions can be exerted more reliably.

Furthermore, in the above-described embodiment, the absorbent body 21 has, as shown in FIG. 1 , the wide portion 21M, which is the portion where the length in the width direction W of the absorbent body 21 is the longest in the abdominal region _AF , and The length in the width direction W of the absorbent body 21 in the boundary portion between the abdominal region A _F and the intercrotch region A _C is longer than the length in the width direction W of the wide portion 21M (that is, the length in the width direction of the absorbent body 21 in the abdominal region A _F The narrow width portion 21N is smaller than the maximum length (W). This narrow width portion 21N overlaps with the above-mentioned shrinkage area when viewed from above. In this way, in the boundary portion between the abdomen region _AF and the intercrotch region A _C , the length in the width direction W of the absorber 21 is narrower than the maximum length in the width direction W of the absorber 21 in the abdomen region _AF . As for the part 21N, the rigidity of the urine-absorbent pad 1 in the part having the narrow-width part 21N is relatively low, so when the urine-absorbent pad 1 is worn, the urine-absorbent pad 1 can easily have the above-mentioned width. The surface of the skin-facing side is concavely curved from the narrow portion 21N as a starting point. Furthermore, in this kind of urine-absorbent pad 1, when viewed from above, the narrow width portion 21N overlaps with the above-mentioned shrinkage area. Therefore, when the urine-absorbent pad 1 is worn, the abdomen area A _F and the intercrotch area have large curvatures. The interface between A and _C (that is, the portion that overlaps with the narrow width portion 21N in the thickness direction T) and the surface of the second wall portion 43 of the leakage-proof wall portion on the skin-facing side are maintained and absorbed as shown in Figure 7 The surface of the main body 2 on the skin-facing side has a substantially parallel planar shape, so that the above-mentioned leakage-proof wall portion can easily stand up toward the skin-facing side. Therefore, this kind of urine-absorbent pad 1 can ensure the leakage-proof wall portion of the portion where the curvature becomes large when worn (that is, the boundary portion of the abdominal area A _F and the intercrotch area A _C ) and the user's skin. The surface contact area is small (in other words, it is difficult to form a gap between the leakage prevention wall and the user's skin surface), so side leakage of excretion fluid can be more reliably prevented.

In addition to the urine-absorbent pads of the above-described embodiments, the present invention can be applied to various absorbent articles such as disposable diapers, sanitary napkins, and incontinence pads. In addition, the absorbent article of the present invention is not limited to the above-described embodiments, and appropriate combinations, substitutions, changes, etc. can be made within the scope that does not deviate from the object and spirit of the present invention. In addition, in this manual, serial numbers such as "1st" and "2nd" are only used to distinguish the matters attached to the serial numbers, and do not mean the order, priority, importance, etc. of each matter.

1‧‧‧Urine-absorbent pad (absorbent article) 2‧‧‧Absorbent body part 21‧‧‧Absorbent body 21A‧‧‧First absorbent layer 21B‧‧‧Second absorbent layer 21E ₁ ‧‧‧Back area side End edge 21E ₂ ‧‧‧Abdominal region side end edge 21E ₃ ‧‧‧One side end edge in the width direction 21E ₄ ‧‧‧The other side end edge 21M in the width direction‧‧‧The wide part in the abdominal region 21N‧‧‧Narrow width part 22‧‧‧Surface sheet 23‧‧‧Back sheet 24‧‧‧Lining film 3‧‧‧Embossed part 4‧‧‧Side sheet (leak-proof wall part) 41‧‧‧Base 42 ‧‧‧First wall part 43‧‧‧Second wall part 44‧‧‧First joint part 45‧‧‧Second joint part 45E _i ‧‧‧Inner side end A _F ‧‧‧Abdominal area A _C ‧‧‧Intercrotch area A _B ‧‧‧Back area A _W1 ‧‧‧Width direction 1st area A _W2 ‧‧‧Width direction 2nd area EL‧‧‧Elastic member F _C ‧‧‧Liquid flow control part

[Fig. 1] A plan view of the urine-absorbent pad 1 in an unfolded state according to one embodiment of the present invention. [Fig. 2] An end view of the urine-absorbent pad 1 in its natural state in a cross-section along line II-II in Fig. 1. [Fig. 3] An end view of the urine-absorbent pad 1 in its natural state in a cross-section along line III-III in Fig. 1. [Fig. 4] An end view of the urine-absorbent pad 1 in its natural state in a cross-section along line IV-IV in Fig. 1. [Fig. 5] An end view of the urine-absorbent pad 1 in its natural state in a cross-section along the V-V line in Fig. 1. [Fig. 6] An end view of the urine-absorbent pad 1 in its natural state in a cross-section along line VI-VI in Fig. 1. [Picture 7] A perspective view of the urine-absorbent pad 1.

1‧‧‧Urine-absorbent pad (absorbent article)

2‧‧‧Absorption body part

21‧‧‧Absorbent body

21As,21Bs‧‧‧Through hole

21E ₁ ‧‧‧Dorsal area side edge

21E ₂ ‧‧‧Side edge of abdominal area

21E ₃ ‧‧‧One side edge in the width direction

21E ₄ ‧‧‧The other end edge in the width direction

21M‧‧‧Width and wide part in the abdominal area

21N‧‧‧Narrow width

22‧‧‧Surface flakes

23‧‧‧Back sheet

3‧‧‧Embossed part

4‧‧‧Side sheet (leak-proof wall)

44‧‧‧1st joint

45‧‧‧2nd joint

45E _i ‧‧‧Inner side end

A _F ‧‧‧Abdominal area

A _C ‧‧‧Inter-stock area

A _B ‧‧‧Back area

A _W1 ‧‧‧Width direction 1st area

A _W2 ‧‧‧Width direction 2nd area

F _C ‧‧‧Liquid Flow Control Department

Claims (8)

An absorbent article is provided with: an absorbent body part having an absorbent body that has a length direction, a width direction, and a thickness direction, and has an abdominal region, an intercrotch region, and a back region in the aforementioned length direction; and a pair of leak-proof The wall portions are located at both ends of the absorption body portion in the width direction and extend continuously across both ends in the length direction. The leakage-proof wall portions each have: facing the absorption body portion and The base portion fixed to the absorbent body portion, and the first wall portion connected to the inward edge of the base portion in the width direction and standing up toward the skin-opposite side when worn, and the first wall portion The outer end edge in the width direction is connected to a second wall portion that rises toward the skin-opposing side when worn, and at least in the back area, it has: including the end edge in the longitudinal direction and having a predetermined A liquid flow control part arranged with a length in the longitudinal direction and a predetermined length in the width direction, the control part controls the erect structure of the first wall part and the second wall part, and controls the flow of the excretion liquid in the width direction and the above In the thickness direction, further, the liquid flow control portion includes: a first joint portion that joins the base portion and the first wall portion and has a predetermined length in the longitudinal direction; and the first wall portion and the second wall portion. The second joint portion is joined and the longitudinal length of the inward edge in the width direction is more than the longitudinal length of the first joint portion and less than the longitudinal length of the outer edge in the width direction. ; The absorbent body is such that, when viewed from above, the back region side end edge in the longitudinal direction of the absorbent body is located farther inward than the end edge in the width direction of the second joint portion, which is the furthest end in the longitudinal direction. The inner end portion on the inner side is further to the outer side in the longitudinal direction, and both end edges of the absorber in the width direction are located farther inward than the base portion in the width direction at least in the back area. The end edge is disposed on the outer side in the width direction in the absorbent body part, and the absorbent body part includes the first widthwise first sections that are respectively disposed by the widthwise central axis extending in the longitudinal direction. area and a pair of embossed portions that are in the second area in the width direction and are recessed in the thickness direction from the skin-facing surface, and the length in the width direction from the embossed portion to the inward end edge of the base portion in the width direction, The total length of the width direction length of the first wall portion and the width direction length of the second wall portion is longer than the width direction length from the width direction center axis to the embossed portion. The absorbent article of claim 1, wherein the absorbent body has: in the crotch area, both end edges of the absorbent body in the width direction are located farther than the base portion in the width direction. The inner end edge is an outer shape that contracts toward the inward side in the width direction. For example, the absorbent articles in Item 1 or 2 of the patent scope, among which, The absorbent body is such that in the abdominal region and the back region, both end edges of the absorbent body in the width direction are located further in the width direction than the outer end edges of the second joint portion in the width direction. the outer side. In the absorbent article claimed in Claim 1, the inner end edge of the first joining portion in the longitudinal direction extends linearly along the width direction. Such as the absorbent article claimed in claim 1, wherein the pair of leakage-proof wall portions each have a plurality of elastic members extending in the longitudinal direction and arranged in parallel in the width direction when viewed from above, The plurality of elastic members is such that the longitudinal length of the elastic member located on the outer side in the width direction is longer than the longitudinal length of the elastic member located on the inner side in the width direction. Such as the absorbent article claimed in Claim 5, wherein the pair of leakage-proof wall portions respectively have: viewed from above, they are formed by the plurality of elastic members so as to be contractible in the longitudinal direction. The shrinkage area extending in the longitudinal direction is a length in the longitudinal direction of the portion located on the inward side of the width direction, which is longer than the length in the longitudinal direction of the portion located on the outer side of the width direction. For example, the absorbent article in item 6 of the patent application scope, among which, The absorber has a width in which the length in the width direction of the absorber in the interface between the abdominal region and the intercrotch region is smaller than the maximum length in the width direction of the absorber in the abdominal region. The narrow portion, the aforementioned narrow width portion, overlaps with the aforementioned shrinkage area when viewed from above. For example, in the absorbent article claimed in claim 1, in the pair of leakage-proof wall portions, the liquid flow control portions are respectively arranged in the abdominal region and the back region, and the absorbent body is formed from When viewed from above, the abdominal region side end edge of the absorber in the longitudinal direction is located inwardly inward in the longitudinal direction from among the inward end edges of the second joint portion in the width direction. The side end portions are further outward in the longitudinal direction, and both end edges in the width direction of the absorber are located inward of the end edges in the width direction of the base portion at least in the abdominal region and the back region. Furthermore, it is arrange|positioned in the said absorption main body part on the outer side in the said width direction.