JP6385519B1 - Absorbent articles - Google Patents

Abstract

The present invention provides an absorbent article that can prevent leakage from the back side in the longitudinal direction while preventing side leakage of excretory liquid steadily.
An absorbent article according to the present invention includes an absorbent main body (2) provided with an absorber (21) and a pair of leak-proof walls, each of the pair of leak-proof walls being a base. (41), a first wall portion (42), a second wall portion (43), a liquid flow control portion (F) including a first joint portion (44) and a second joint portion (45). _C )), and the absorbent body (21) has, in plan view, the back region side edge in the longitudinal direction of the inner side edge in the width direction of the second joint (45) in the longitudinal direction. It is located on the outer side in the longitudinal direction from the inner side end (45E _i ) located on the innermost side, and both end edges in the width direction of the absorber (21) are at least at the back region (A _B ). It is arrange | positioned in an absorption main-body part (2) so that it may be located in the outer side of the width direction rather than the inner side edge in the width direction of (41).
[Selection] Figure 1

Description

  The present invention relates to an absorbent article such as a urine absorbing pad and a disposable diaper.

  Conventionally, in absorbent articles such as urine absorbing pads and disposable diapers, absorbent articles are used for the purpose of preventing lateral leakage of excretory fluids such as urine (that is, leakage occurring from the end in the width direction of the absorbent article). A pair of leak-proof walls (so-called three-dimensional gathers) that stand up toward the wearer's skin surface are disposed on both sides in the longitudinal direction (that is, both ends in the width direction).

As an absorbent article for preventing such side leakage of excretory fluid, for example, Patent Document 1 discloses a substantially sheet-like main body portion in which an absorption core is disposed between a backsheet and a topsheet, and the main body portion. A pair of side sheets provided over substantially the entire length in the longitudinal direction of the main body on both sides, and each of the pair of side sheets is provided on one side of a folding line provided over the entire length in the longitudinal direction. It is a part, a band-like joint part joined to the main body part, and a part on the other side of the fold line, on the inner edge in the width direction perpendicular to the longitudinal direction of the joint part that is the fold line. A side wall portion that is folded back toward the outside in the width direction, and further folded back toward the inside in the width direction, and a part thereof stands up from the main body portion. Two side wall end portions fixed on the joint portion at both ends in the longitudinal direction, and an upright portion continuous from the two side wall end portions between the two side wall end portions and rising from the fold line. An elastic member that is disposed over substantially the entire length of the upright portion and contracts to form a gather by contracting the upright portion, and one side wall end of the two side wall end portions The portion is a portion continuous from the upright portion, and the elastic member is disposed and is not joined to the joint portion and the main body portion, and the elastic member contracts to lower the standing portion. An absorbent article is disclosed that includes a semi-standing part that stands up from a main body part, and a fixing part that is adjacent to the outside of the semi-standing part in the width direction and is fixed on the joint part. .
According to the absorbent article disclosed in Patent Document 1, it is said that side leakage from the vicinity of the end in the longitudinal direction of the absorbent article can be prevented.

JP 2010-094321 A

However, in the absorbent article disclosed in Patent Document 1, in the above-described semi-standing portion, both end portions in the width direction of the absorbent core are positioned on the inner side in the width direction than the fixed portions of the pair of side wall portions. Therefore, even if the excretory fluid that has flowed to the semi-standing portion of the side wall portion is blocked by the semi-standing portion, the excreted fluid that has been blocked cannot be sufficiently absorbed by the absorbing core, and the absorbing core There was a risk of causing side leakage from the outer side in the width direction.
Furthermore, the absorbent article disclosed in Patent Document 1 is such that both ends in the longitudinal direction of the absorbent core are in a position substantially equal to the longitudinally inner end in the semi-standing part in the longitudinal direction. Particularly because there is no absorbent core on the outer side in the longitudinal direction from the position substantially equal to the end portion on the inner side in the longitudinal direction of the semi-standing portion in the longitudinal direction), In the case where the excretion fluid is repeatedly discharged from the sleeping wearer, the excretion that has flowed in the longitudinal direction while the flow in the width direction is suppressed by the standing portion and the semi-standing portion of the side wall portion described above. The liquid could not be sufficiently absorbed by the absorbent core, and there was a risk that the excreted liquid would leak out from the back side in the longitudinal direction of the absorbent article.

  Then, an object of this invention is to provide the absorbent article which can make it difficult to produce the leak from the back part side in a longitudinal direction, preventing the side leakage of excretion liquid steadily.

One aspect (aspect 1) of the present invention has a longitudinal direction, a width direction, and a thickness direction, and has an abdominal region, a crotch region, and a back region in the longitudinal direction, and an absorbent main body including an absorbent body. An absorbent article comprising a pair of leak-proof wall portions located at each of both end portions in the width direction of the absorbent main body portion and continuously extending over both end portions in the longitudinal direction,
Each of the leak-proof wall portions is connected to a base portion facing the absorption main body portion and fixed to the absorption main body portion, an inner side edge in the width direction of the base portion, and a skin facing surface side when worn And a second wall portion that is connected to the outer side edge in the width direction of the first wall portion and that rises toward the skin facing surface side when worn. The standing of the first wall portion and the second wall portion including at least the longitudinal edge and having a predetermined longitudinal length and a predetermined width direction length at least in the back region. It has a liquid flow control unit that controls the flow of excretory liquid in the width direction and the thickness direction by controlling the structure,
Further, the liquid flow control unit joins the base and the first wall and joins the first joint having a predetermined length in the longitudinal direction, the first wall and the second wall. And the 2nd junction part whose longitudinal direction length of the inner side edge in the said width direction is more than the said longitudinal direction length of the said 1st junction part, and less than the longitudinal direction length of the outer side edge in the said width direction And including,
In the plan view, the absorber has an edge on the back region side in the longitudinal direction of the absorber on the innermost side in the longitudinal direction of the inner edge in the width direction of the second joint portion. The both end edges in the width direction of the absorbent body are located at the outer side in the longitudinal direction from the inner side edge part positioned, and at least the inner side edge in the width direction of the base part in the back region. Is the absorbent article disposed in the absorbent main body so as to be located on the outer side in the width direction.

In the absorbent article according to the first aspect, a pair of leak-proof wall portions having a base portion, a first wall portion, and a second wall portion join the base portion and the first wall portion at least in a back region, and have a predetermined longitudinal length. A longitudinal length of an inner side edge in the width direction is joined to the longitudinal length of the first joint portion, the first joint portion having a length, the first wall portion and the second wall portion are joined together The liquid flow control unit is configured to include the second joint portion that is less than the length in the longitudinal direction of the outer side edge in the width direction, and the absorber is a plan view. And the inner side edge part where the edge part by the side of the back | dorsal region in the said longitudinal direction of the said absorber is located in the innermost side of the said longitudinal direction among the inner side edge edges in the said width direction of the said 2nd junction part. Is positioned on the outer side in the longitudinal direction than at least both end edges in the width direction of the absorber. Because it has a specific structure that it is arranged in the absorbent main body so as to be located on the outer side in the width direction with respect to the inner side edge in the width direction of the base in the back region. In the above-described liquid flow control unit, the specific standing structure having a sufficient standing height by the first wall portion and the second wall portion and sufficiently durable against the excretory fluid discharged from the wearer. Can be formed. Thereby, the absorbent article of this aspect 1 is the above-mentioned liquid excreted from the wearer and flowing on the skin facing surface side of the absorbent main body portion toward the outer side in the longitudinal direction and the width direction. Inside the absorption body part through the skin-facing surface side surface of the absorption body part while damming it so as to be enclosed in a cavity formed between a specific standing structure in the flow control part and the skin-facing surface of the absorption body part In addition, the liquid excretion fluid flowing toward the outer side in the longitudinal direction is guided toward the inner side in the width direction by the liquid flow control unit, It can be made to absorb in the absorber in an absorption main-body part via the surface by the side of a skin opposing surface.
As a result, the absorbent article according to the first aspect can prevent the leakage from the back side in the longitudinal direction while preventing the lateral leakage of the excretory liquid steadily.

  Moreover, in another aspect (aspect 2) of the present invention, in the absorbent article according to aspect 1, in the crotch region, the absorbent body has both end edges in the width direction of the width of the base portion. It has an outer shape constricted toward the inner side in the width direction so as to be located on the inner side in the width direction with respect to the inner side edge in the direction.

  In the absorbent article according to the second aspect, in the crotch region, the absorbent body has inner edges in the width direction where both end edges in the width direction of the absorbent body are inward in the width direction of the base portion in the width direction. Since the outer shape is narrowed toward the inner side in the width direction so as to be located on the side, the pair of leak-proof wall portions has a high degree of freedom in deformation and movement in the crotch region. The pair of leak-proof wall portions can be brought into close contact with each other while following the wearer's body shape (the shape of the crotch portion). Thereby, since the absorptive article of this mode 2 becomes difficult to form a crevice between a wearer's body (crotch part) and a pair of leak-proof wall parts, it prevents more reliably the side leakage of excretion fluid. Can do.

  In still another aspect (Aspect 3) of the present invention, in the absorbent article according to Aspect 1 or 2, the absorbent body has both end edges in the width direction of the absorbent body in the abdominal region and the back region. It is located on the outer side in the width direction with respect to the outer side edge in the width direction of the second joint portion.

  In the absorbent article according to the third aspect, in the abdominal region and the back region, both end edges in the width direction of the absorbent body are more in the width direction than outer side end edges in the width direction of the second joint portion. Because it is located on the outer side, when the wearer is lying down sideways (that is, when the excretion fluid tends to flow in the direction of gravity (the direction toward the outer side in the width direction of the absorbent main body)) However, the excretory fluid flowing toward the outer side in the width direction can be steadily absorbed by the above-described absorber, and the lateral leakage of the excretory fluid can be further reliably prevented.

In still another aspect (Aspect 4) of the present invention, in the absorbent article according to any one of Aspects 1 to 3, the absorbent main body portion is first in the width direction defined by the widthwise central axis extending in the longitudinal direction. Including a pair of embossed portions disposed in each of the region and the second region in the width direction and recessed from the skin facing surface in the thickness direction,
The total length of the width direction length from the embossed portion to the inner side edge in the width direction of the base portion, the width direction length of the first wall portion, and the width direction length of the second wall portion, It is longer than the width direction length from the said width direction center axis to the said embossed part.

In the absorbent article according to the fourth aspect, the absorbent main body portion includes the pair of embossed portions, and further, the length in the width direction from the embossed portion to the inner side edge in the width direction of the base portion, the first wall. Since the total length of the width direction length of the portion and the width direction length of the second wall portion is configured to be longer than the width direction length from the width direction central axis to the embossed portion, A pair of embossed portions are bent and the width direction central portion extending along the width direction central axis of the absorbent main body portion protrudes toward the skin facing surface side (that is, along the longitudinal direction central axis). The absorption main body portion is easily deformed (so that the cross-sectional shape is substantially W-shaped), and the standing height of the pair of leak-proof wall portions protrudes toward the skin facing surface side. It tends to be higher than the height.
Thereby, the absorbent article of this aspect 4 makes the skin opposing surface in the said width direction center part of an absorption main-body part closely_contact | adhere to a wearer's crotch part, or makes the excretion liquid discharged | emitted from a wearer into an absorber. While being able to make it easy to absorb, the side leakage of excretory fluid can be prevented more reliably.

  In still another aspect (Aspect 5) of the present invention, in the absorbent article according to any one of Aspects 1 to 4, an inner side edge in the longitudinal direction of the first joint portion extends along the width direction. It extends in a straight line.

  In the absorbent article according to the fifth aspect, since the inner side edge in the longitudinal direction of the first joint portion extends linearly along the width direction, the first joint portion in the longitudinal direction. The standing structure of the first wall portion and the second wall portion standing from the inner side edge is easily stabilized, and the function of the liquid flow control portion described above can be more steadily exhibited.

  In still another aspect (Aspect 6) of the present invention, in the absorbent article according to any one of Aspects 1 to 5, each of the pair of leak-proof wall portions extends in the longitudinal direction in a plan view, and A plurality of elastic members arranged so as to be aligned in the width direction, wherein the plurality of elastic members have a longitudinal length of an elastic member located on the outer side in the width direction, the width direction It is longer than the length in the longitudinal direction of the elastic member located on the inner side.

  In the absorbent article according to the sixth aspect, the plurality of elastic members arranged in each of the pair of leak-proof wall portions are such that the longitudinal length of the elastic member located on the outer side in the width direction is the width direction. Since the length of the elastic member located on the inner side is longer than the length in the longitudinal direction, an upright structure by the first wall portion and the second wall portion is formed in the outer side portion in the width direction of the pair of leak-proof wall portions. It is easy to maintain, can further ensure the durability against the excretion fluid toward the outer side in the width direction, and also the inner side portions in the width direction of the pair of leak-proof wall portions (that is, the pair of anti-proofing members). In the part that becomes the standing start point and the top part of the leakage wall part), the degree of freedom of deformation and movement is high, and the pair of leakage prevention wall parts follow the wearer's body shape (shape of the crotch part) It can be made to adhere easily. Thereby, the absorbent article of this aspect 6 can exhibit the leak-proof function of a pair of above-mentioned leak-proof wall part more favorably.

  In still another aspect (Aspect 7) of the present invention, in the absorbent article according to Aspect 6, each of the pair of leak-proof wall portions is contracted in the longitudinal direction by the plurality of elastic members in plan view. A contraction region extending in the longitudinal direction and formed so that the contraction region has a longitudinal length of a portion located on the inner side in the width direction, and the outer side in the width direction; It is longer than the length in the longitudinal direction of the portion located on the side.

  In the absorbent article according to the present aspect 7, in each contracted region of the pair of leak-proof wall portions, the longitudinal length of the portion located on the inner side in the width direction is located on the outer side in the width direction. Since it is longer than the length in the longitudinal direction of the part, in each of the pair of leak-proof wall portions, it becomes difficult for the top portion to be rolled up, and the leak-proof function of the pair of leak-proof wall portions more reliably It can be demonstrated.

In still another aspect (Aspect 8) of the present invention, in the absorbent article according to Aspect 7, the absorbent body has a length in the width direction of the absorbent body at a boundary portion between the abdominal region and the crotch region. Has a narrow portion smaller than the maximum length in the width direction of the absorbent body in the abdominal region,
The narrow portion overlaps the contraction region in plan view.

In the absorbent article according to this aspect 8, the absorbent body has a maximum length in the width direction of the absorbent body in the abdominal region at the boundary portion between the abdominal region and the crotch region. Since it has a narrow portion smaller than the length and the rigidity of the absorbent article in the portion having the narrow portion is relatively low, when the absorbent article is worn, the absorbent article is It becomes easy to bend | curve so that the surface on the skin opposing surface side may be dented starting from the part which has this narrow part. Moreover, in the absorbent article of the present aspect 8, the narrow portion overlaps the above-described contraction region in plan view, and therefore, when wearing the absorbent article, the abdominal region and the crotch portion having a large curvature. In the boundary portion with the region (that is, the portion overlapping with the narrow portion in the thickness direction), the surface on the skin facing surface side of the second wall portion of the leakage preventing wall portion is on the skin facing surface side of the absorption main body portion. The above-mentioned leak-proof wall part becomes easy to stand toward the skin facing surface side while maintaining a planar shape substantially parallel to the surface.
Thereby, the absorbent article of this aspect 8 is in contact with the wearer's skin surface and the leak-proof wall portion of the portion where the curvature increases when worn (that is, the boundary portion between the abdominal region and the crotch region). It is possible to secure a larger area (in other words, it is difficult to form a gap between the leak-proof wall portion and the skin surface of the wearer), so that the side leakage of the excretory liquid is further ensured. Can be prevented.

In still another aspect (Aspect 9) of the present invention, in the absorbent article according to any one of Aspects 1 to 8, the liquid flow control part in each of the pair of leak-proof wall parts includes the abdominal region and the back part. Located in each of the areas,
In the planar view, the abdominal region side edge in the longitudinal direction of the absorbent body is located on the innermost side in the longitudinal direction among the inward side edges in the width direction of the second joint portion in plan view. The both end edges in the width direction of the absorber are located at the inner side in the width direction of the base in at least the abdominal region and the back region, and located on the outer side in the longitudinal direction from the inner side end portion positioned. It arrange | positions in the said absorption main-body part so that it may be located in the outer side of the said width direction rather than a side edge.

  In the absorbent article according to the ninth aspect, the liquid flow control unit in each of the pair of leak-proof wall portions is disposed in each of the abdominal region and the back region, and the absorbent body is the planar view, The abdomen region side edge in the longitudinal direction of the absorbent body is longer than the inner side end portion located on the innermost side in the longitudinal direction among the inner side edges in the width direction of the second joint portion. And both end edges in the width direction of the absorber are at least outward in the width direction from the inner side edge in the width direction of the base in at least the abdominal region and the back region. Since it is arranged in the absorbent main body so as to be located on the side, when the wearer is lying on his / her face in a prone state (that is, the direction of excretion discharged from the wearer toward the abdomen in the longitudinal direction) If it is easy to flow) Dodemo, by the liquid flow control unit arranged in the abdominal area, while preventing lateral leakage of liquid waste in the abdominal area steadily, can be difficult to occur also leak from the abdomen side in the longitudinal direction.

  ADVANTAGE OF THE INVENTION According to this invention, the absorbent article which can make it difficult to produce the leak from the back part side in a longitudinal direction can be provided, preventing the side leakage of excretion liquid steadily.

FIG. 1 is a plan view of a urine collecting pad 1 according to an embodiment of the present invention in a developed state. FIG. 2 is an end view of the cross section along the line II-II in FIG. FIG. 3 is an end view in the natural state of a cross section taken along line III-III in FIG. FIG. 4 is an end view in the natural state of a cross section taken along line IV-IV in FIG. FIG. 5 is an end view in a natural state of a cross section taken along line VV of FIG. FIG. 6 is an end view in the natural state of a cross section taken along line VI-VI in FIG. FIG. 7 is a perspective view of the urine collecting pad 1.

  Hereinafter, preferred embodiments of the absorbent article of the present invention will be described in detail with reference to the drawings. In this specification, unless otherwise noted, “an object placed on a horizontal surface in an unfolded state (for example, an absorbent article, an absorbent body, etc.) “Viewing in the thickness direction of the object from the top sheet side in the case of an article” is simply referred to as “plan view”. Here, the “expanded state” means a state in which an object placed on a horizontal plane is extended along the horizontal plane, and further, the extended state is released from the extended state (for example, the target A state in which an object is contracted to some extent by an elastic member or the like) is referred to as a “natural state”.

Various directions and the like used in this specification are as follows unless otherwise specified.
In the present specification, “longitudinal direction” refers to “a long direction of a vertically long object (for example, an absorbent article, an absorbent main body, an absorbent body, etc.) in plan view”, and “width direction” "Long direction of the long object in plan view (short direction)" refers to "thickness direction" refers to "perpendicular to the object placed on the horizontal plane in the unfolded state" These longitudinal directions, width directions, and thickness directions are orthogonal to each other. In the present specification, the longitudinal direction, the width direction, and the thickness direction of the absorbent article respectively correspond to the longitudinal direction, the width direction, and the thickness direction of the absorbent main body part that constitutes the absorbent article.
Further, in the present specification, “in the longitudinal direction of a vertically long object, a relatively proximal side with respect to a longitudinal central axis C _W that is located at the center of the object in the longitudinal direction and extends in the width direction”. This is called “inward side in the longitudinal direction”, and “relatively distal to the longitudinal central axis _CW in the longitudinal direction of the longitudinal object” is called “outward side in the longitudinal direction”. Likewise, "in the width direction of the elongated object, relatively proximal side with respect to the width direction central axis C _L to and located at the center in the widthwise direction extending in the longitudinal direction of the object" a "in the width direction It called inward "," in the width direction of the vertically elongated object, the relatively distal "with respect to the widthwise central axis C _L of" outer side in the width direction ".
Moreover, in this specification, "the area | region corresponding to a wearer's abdomen at the time of wear of an absorbent article in the longitudinal direction of an absorbent article or an absorption main-body part" is called "abdomen area | region,""absorbent article or an absorption main body. The region corresponding to the back or buttocks of the wearer when the absorbent article is worn in the longitudinal direction of the part is referred to as “back region”, and “the abdominal region and the back in the longitudinal direction of the absorbent article or the absorbent main body” A region located between the region and corresponding to the wearer's crotch portion when the absorbent article is worn is referred to as a “groin region”. Here, “when wearing” means from the time when the wearer wears the absorbent article (that is, when the wearable state is formed) to the time that the state is maintained (while being worn) means.
Further, in this specification, unless otherwise specified, in the thickness direction of the absorbent article or the absorbent main body portion, “when the absorbent article is worn,“ relative to the skin surface of the wearer ” It is referred to as “skin facing surface side”, and “relative to the wearer's skin surface when the absorbent article is worn” is referred to as “non-skin facing surface side”. In addition, in this specification, the “surface on the skin facing surface side” and “non-skin facing surface” of the absorbent article and various components (for example, the absorbent main body, the surface sheet, the absorber, the back sheet, the side sheet, etc.) The “side surface” may be simply referred to as “skin facing surface” and “non-skin facing surface”, respectively.

FIG. 1 is a plan view of the urine collecting pad 1 according to an embodiment of the present invention in a developed state, and FIGS. 2 to 6 are taken along lines II-II to VI-VI in FIG. FIG. 7 is a perspective view of the urine collecting pad 1.
As shown in FIG. 1, a urine absorption pad 1 (an example of an absorbent article of the present invention) according to an embodiment of the present invention has a vertically long outer shape having a longitudinal direction L and a width direction W in plan view. has, specifically, a substantially central portion of the longitudinal direction L (i.e., the crotch region a _C corresponding portion) substantially hourglass-shaped outer shape having a constricted thin toward the inner side of the width direction W Have. In the present invention, the outer shape of the absorbent article is not limited to such an aspect, and various uses can be used as long as the length dimension in the longitudinal direction L is longer than the width dimension in the width direction W. Any vertically long shape (for example, a rectangle, an ellipse, a bowl, etc.) according to the above can be adopted.

As shown in FIGS. 1 and 2, the urine collection pad 1 of the present embodiment has a longitudinal direction, a width direction, and a thickness corresponding to each of the longitudinal direction L, the width direction W, and the thickness direction T of the urine collection pad 1. abdominal area in and the longitudinal direction has a direction a _F, has a crotch region a _C and back region a _B, the absorption body portion 2 having an absorber 21, both ends in the width direction W of the absorbent main body 2 It is comprised by a pair of side sheet | seats 4 and 4 (leak-proof wall part) which are located in each of the parts and continuously extend over the both ends of the said longitudinal direction L. As shown in FIG.

  As shown in FIGS. 1 to 6, the absorbent main body 2 has a liquid-permeable surface sheet 22 located on the skin facing surface side and a liquid impermeable surface located on the non-skin facing surface side in the thickness direction T. The back sheet 23 and the two absorbent layers that are located between these sheets and are capable of absorbing and retaining excretory fluid such as urine (specifically, the first relatively positioned on the skin facing surface side) An absorbent body 21 having an absorbent layer 21A and a second absorbent layer 21B) located on the non-skin facing surface side, and infiltrating excretion fluid such as urine discharged from the wearer in the thickness direction T. However, it is comprised so that it can absorb and hold | maintain with the above-mentioned absorber 21. FIG.

On the other hand, as shown in FIGS. 1 to 6, the pair of side sheets 4, 4 (leakproof wall portion) is on the skin facing surface side of the absorbent main body 2 (more specifically, the skin facing surface of the topsheet 22. Side) opposite to the absorption body 2, located at each of both ends in the width direction W of the absorption body 2 and both ends in the longitudinal direction L (that is, the abdominal region side end and the back region in the longitudinal direction L) Each of the pair of side sheets 4 and 4 is located on the inner side in the width direction W of the absorbent main body 2 and the absorbent main body. A free end portion that is not joined to the skin facing surface side of the part 2 and a skin facing surface side surface of the absorbent main body 2 that is located on the outer side in the width direction W of the absorbent main body 2 And a fixed end.
Each of the pair of side sheets 4 and 4 has an edge on the inner side in the width direction W (that is, an inner side edge in the width direction W) that is a free end when the urine absorbing pad 1 is worn. A pair of leak-proof wall portions that stand up toward the facing surface and function as leak-proof walls that prevent lateral leakage of excretion fluid such as urine discharged from the wearer can be formed.

  As shown in FIG. 1, each of the pair of side sheets 4, 4 has the pair of side sheets 4, 4, and eventually the urine collection pad 1 in the longitudinal direction in the vicinity of the inner side edge in the width direction W. Five (a plurality of) elastic members EL that are contracted to L and promote the standing of the inner side edge in the width direction W of each of the pair of side sheets 4 and 4 are arranged along the longitudinal direction L. Yes.

And in the urine picking pad 1 of this embodiment, each of the leak-proof wall part formed of a pair of side sheet | seats 4 and 4 opposes the above-mentioned absorption main-body part 2 as shown in FIGS. And the base 41 fixed to the said absorption main-body part 2, and it is connected to the inner side edge in the width direction W of this base 41 in the skin opposing surface side of the said base 41, and stands up toward the skin opposing surface side at the time of wear (More specifically, the first wall portion 42 in which the inner side portion in the longitudinal direction L stands up toward the skin facing surface side) and the first wall portion 42 on the skin facing surface side of the first wall portion 42. The wall portion 42 is connected to the outer side edge in the width direction W and stands up toward the skin facing surface side when worn (more specifically, the inner side portion in the longitudinal direction L is on the skin facing surface side). A second wall portion 43 standing up), and the abdominal region _AF and the spine In Part area A _B, and comprises a longitudinal L edge of the side sheets 4 are arranged to have a predetermined longitudinal length and a predetermined length in the width direction, the first wall portion 42 and the second wall portion by controlling the standing structure 43 has a liquid flow control unit F _C to control the flow in the widthwise direction W and the thickness direction T of the liquid waste discharged from the wearer.
Further, the liquid flow control unit F _C, as shown in FIG. 5, joined to the base portion 41 of the first wall portion 42 (more specifically, the longitudinal direction of each of the base portion 41 first wall portion 42 L The first joint portion 44 having a predetermined length in the longitudinal direction, and the first wall portion 42 and the second wall portion 43 are joined (more specifically, The first wall portion 42 and the second wall portion 43 are joined to the outer side portions in the longitudinal direction L), and the longitudinal length of the inner side edge in the width direction W is the length of the first joint portion 44. And a second joint portion 45 that is not less than the length in the longitudinal direction and less than the length in the longitudinal direction of the outer side edge in the width direction W.
Incidentally, in a pair of leakage preventing walls section, in the embodiment of the portion (above than the liquid flow control unit F _C located on the inner side of the longitudinal direction L, the liquid flow control unit F _C and the back of the abdominal area A _F the leakage preventing wall portion) between the liquid flow control unit F _C region a _B, structure to control the standing structure as the liquid flow control unit F _C (i.e., controls the flow of liquid waste in a specific direction structure) not provided with a to and is formed as a standing uncontrolled unit S _P having the same structure and function as normal leak-barrier walls (see Figure 2).

As shown in FIG. 1, the absorbent body 21 has a back region side edge 21 </ b> E ₁ in the longitudinal direction L of the absorbent body 21 in the plan view, and an inner side end in the width direction W of the second joint 45. Among the edges, both end edges in the width direction W of the absorbent body 21 (that is, the width direction) are located on the outer side in the longitudinal direction L with respect to the inner end 45E _i located on the innermost side in the longitudinal direction L. as one side edge 21E ₃ and the other side edge 21E 4 in _W) is located outer side in the width direction W than the inner side edge in the width direction W of the base portion 41 in the back region a _B, It arrange | positions in the absorption main-body part 2. FIG.

In the urine absorbing pad 1 of this embodiment, the absorber 21, as shown in FIG. 1, in plan view, the longitudinal direction L in the abdominal region side edge 21E ₂ of the absorbent body 21, the abdominal area A longitudinal than innermost inner end located on the side 45E _i in the longitudinal direction L of the inner side edge in the width direction W of the second joint portion 45 of the disposed _F liquid flow control unit F _C base with positioned on the outer side of the direction L, both edges in the width direction W of the absorber 21 (i.e., one side edge 21E ₃ and the other side edge 21E 4 in the widthwise direction _W) is, in the abdominal area a _F It arrange | positions in the absorption main-body part 2 so that it may be located in the outer side of the width direction W rather than the inner side edge in 41 width direction W.

Urine absorbing pad 1 of this embodiment, particularly, the base portion 41 described above, a pair of leakage preventing walls portion having a first wall portion 42 and the second wall portion 43, at least in the dorsal region A _B, the base portion 41 first The first joining part 44 joining the wall part 42 and having a predetermined longitudinal length, the first wall part 42 and the second wall part 43 joining, and the longitudinal direction of the inner side edge in the width direction W A liquid flow controller F including a second joint 45 having a length equal to or greater than the length in the longitudinal direction of the first joint 44 and less than the length in the width direction W of the outer side edge. has _C, and the absorber 21 described above, in plan view, the longitudinal direction L in the dorsal region side edge 21E ₁ of the absorbent body 21 inward in the width direction W of the second joint portion 45 Outer side in the longitudinal direction L than the inner side end 45E _i located on the innermost side in the longitudinal direction among the side edges. While positioned so as to be located outward in the width direction W than the inner side edge in the width direction W of the base portion 41 at least the back region A _B both end edges in the width direction W of the absorber 21, the absorbing that is disposed in the main body 2, due to the provision of a specific structure, in the liquid flow control unit F _C described above, as shown in FIG. 2, by the first wall portion 42 and the second wall portion 43 It is possible to form a specific standing structure having a sufficient standing height and sufficiently durable against the excretion fluid discharged from the wearer. Thereby, the urine absorption pad 1 discharges the excretion liquid discharged from the wearer and flows toward the outer side in the longitudinal direction L and the width direction W on the surface of the absorption main body 2 on the skin facing side. while dammed as confined in the cavity F _S formed between the specific standing structure and the absorbing body portion 2 of the skin-facing surface side of the surface of the flow control unit F _C, the topsheet 22 of the absorbent main body 2 on can be absorbed into the absorbent body 21 in the absorbent main body 2 via, the liquid waste flowing toward the outer side in the longitudinal direction L, inward in the width direction W by the above-mentioned liquid flow control unit F _C It can be made to absorb into the absorber 21 in the absorption main-body part 2 via the surface sheet 22 of the absorption main-body part 2, guiding it toward the side.
As a result, the urine absorbing pad 1 can prevent leakage from the back side in the longitudinal direction L while steadily preventing lateral leakage of excretory fluid.

In the urine absorbing pad 1 of this embodiment, a liquid flow control unit F _C in each of the pair of leakage preventing walls portions are arranged in the abdominal area A _F not only back area A _B, and, the longitudinal direction L in the abdominal region side edge 21E ₂ of the absorbent body 21, the longitudinal direction of the inner side edge in the width direction W of the second joint arranged liquid flow control unit F _C to the abdominal area a _F L is located on the outer side in the longitudinal direction L with respect to the inner end 45E _i located on the innermost side of L, and both end edges in the width direction W of the absorber 21 (that is, one end in the width direction W) as edge 21E ₃ and the other side edge 21E ₄₎ is located outer side in the width direction W than the inner side edge in the width direction W of the base portion 41 in the abdominal area a _F, absorbent main body 2 Because it is placed inside, the wearer is lying prone If such be the like (i.e., if the flow tends, as in the direction of liquid waste discharged from the wearer toward the abdominal side in the longitudinal direction L), by being placed in the abdominal area A _F liquid flow control unit F _C, Leakage from the abdomen side in the longitudinal direction L can be made difficult to occur while steadily preventing lateral leakage of excretory fluid in the abdominal region _AF .

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

<Absorption body part>
In the urine absorption pad 1 according to the embodiment of the present invention, the absorption body 2 is arranged in the longitudinal direction L, the width direction W, and the thickness direction T of the urine absorption pad 1 in a plan view as shown in FIG. longitudinally, a width direction and a thickness direction, elongated outer shape as the plan view shape of the urine absorbing pad 1 (i.e., the portion in the width direction corresponding to the crotch region a _C of the longitudinal direction L corresponding to each A substantially hourglass-shaped outer shape narrowed toward the inner side of W).
In the present invention, the outer shape of the absorbent main body is not limited to the embodiment as in the present embodiment, and various types can be used as long as the length in the longitudinal direction is longer than the width in the width direction. Arbitrary vertically long shapes (for example, a rectangle, an ellipse, a bowl, etc.) according to a use etc. are employable. Moreover, in this invention, various dimensions, such as the longitudinal direction length of the absorption main-body part, the width direction length, and the thickness direction length (thickness), are predetermined | prescribed absorptivity, a softness | flexibility, and a wearer's body as an absorption main-body part. It will not restrict | limit especially if it has the conformity etc. to a shape, Arbitrary dimensions according to the size and sex of a wear target person, an absorption target object, a use, etc. are employable.

  In the above-mentioned embodiment, as shown in FIGS. 1-6, the absorption main-body part 2 is the liquid-permeable surface sheet 22 located in the skin opposing surface side in the thickness direction T, and the non-skin opposing surface side. A liquid-impermeable back sheet 23 that is positioned, and two absorption layers that are located between these sheets and that can absorb and hold excretion fluid such as urine (that is, the first absorption layer 21A and the second absorption layer) 21B) is provided as a main constituent member, and in this embodiment, the skin facing surface side of the back sheet 23 (that is, between the absorber 21 and the back sheet 23). ) Is provided with a liquid-impermeable back film 24.

  Hereinafter, various constituent members that can be used in the absorbent main body portion of the absorbent article of the present invention will be described in more detail using the urine absorbing pad 1 according to the above-described embodiment.

[Surface sheet]
In the above-mentioned embodiment, as shown in FIG.1 and FIG.2, the surface sheet 22 arrange | positioned at the skin opposing surface side of the absorption main-body part 2 is abdominal region of the longitudinal direction L in the absorption main-body part 2 in planar view. together extending across the dorsal region side end portion from the side end portion extends over the other side edge 21E ₄ near the one side edge 21E ₃ vicinity of the widthwise direction W of the absorber 21 in the absorber body part 2 As a whole, it has a substantially rectangular outer shape that is long in the longitudinal direction L.
In the absorbent article of the present invention, the size and shape of the top sheet is the majority of the surface of the absorbent body on the skin facing surface side (for example, a portion exceeding 50% of the surface area of the absorbent body on the skin facing surface side). If it can cover, it will not be restrict | limited, The thing of arbitrary dimensions shape according to various uses etc. is employable.

  In above-mentioned embodiment, as shown in FIGS. 1-6, the surface sheet 22 is arrange | positioned in the thickness direction T of the absorption main-body part 2 at the skin opposing surface side which can contact a wearer's skin surface directly. The liquid permeable sheet is capable of quickly transferring excretion fluid such as urine discharged from the wearer to the absorbent body 21 disposed on the non-skin facing surface side of the top sheet 22.

  In the present invention, the liquid permeable sheet that can be used as the top sheet is particularly limited as long as it has various properties that can be used as the top sheet of the absorbent article (for example, liquid permeability, touch, flexibility, strength, etc.). For example, fiber-based sheets such as non-woven fabrics and woven fabrics such as air-through nonwoven fabrics, spunbond nonwoven fabrics, and point bond nonwoven fabrics; and apertured films in which a plurality of apertures are provided in a resin film can be suitably used. In addition, the above-mentioned fiber type sheet | seat may be hydrophilized with surfactant. Among such liquid-permeable sheets, it is preferable to use a fiber-based sheet from the viewpoint of excellent liquid permeability, flexibility, strength, and the like, and more preferable to use a nonwoven fabric such as an air-through nonwoven fabric or a spunbonded nonwoven fabric. preferable.

  Moreover, when using the above-mentioned fiber-type sheet | seat as a surface sheet, the constituent fiber in particular is not restrict | limited, For example, from olefin-type resins, such as polyethylene and a polypropylene; From thermoplastic resins, such as polyester-type resins, such as a polyethylene terephthalate and a polylactic acid Resin fibers can be used, and these resins may be used alone or in combination of two or more resins. The structure of the resin fiber is not particularly limited, and for example, a composite fiber such as a core-sheath fiber, a modified cross-section fiber, a three-dimensional crimped fiber, or the like may be used.

  Furthermore, the above-mentioned resin fiber is hydrophilic, for example, using a surfactant, a hydrophilizing agent, or the like (for example, kneading a surfactant inside the fiber, applying a surfactant to the fiber surface). It may be subjected to a chemical treatment, and may contain any additive such as a deodorant and an antibacterial agent. These additives may be used alone or in combination of two or more additives.

In the present invention, the basis weight of the liquid permeable sheet that can be used as the top sheet is not particularly limited as long as it has predetermined liquid permeability, flexibility, and strength, and for example, 5 g / m ^{2 to} 100 g / m ^2. in the range of, preferably in the range of ^{10g / m 2 ~50g / m 2} . The thickness of the liquid permeable sheet is not particularly limited as long as such a liquid permeable sheet can function as a surface sheet of an absorbent article, and can be arbitrarily selected according to desired liquid permeability, flexibility, strength, and the like. The thickness can be adopted.

  The structure of the liquid permeable sheet that can be used as the top sheet is not particularly limited as long as it has predetermined liquid permeability, flexibility, and strength. For example, the liquid permeable sheet has a substantially flat structure or the skin facing surface side. Those having a concavo-convex structure on the surface can be suitably used.

[Back sheet]
In the above-described embodiment, the back sheet 23 disposed on the non-skin facing surface side of the absorbent main body 2 is abdominal in the longitudinal direction L of the absorbent main body 2 in plan view, as shown in FIGS. It extends from the region side end portion to the back region side end portion, and extends from one side end portion in the width direction W of the absorption main body portion 2 to the other side end portion, and is similar to the absorption main body portion 2 as a whole. elongated outer shape (i.e., the longitudinal direction L substantially hourglass-shaped outer shape crotch region a _C portion corresponding to the constricted thinner toward the inner side in the width direction W) of have.
In the absorbent article of the present invention, the size and shape of the back sheet is not particularly limited as long as it can cover at least the entire surface of the absorbent body on the non-skin facing surface side, depending on various uses. Arbitrary dimensions and shapes can be employed.

  Moreover, in the above-mentioned embodiment, as shown in FIGS. 1-6, the back surface sheet 23 is arrange | positioned at the non-skin opposing surface side of the thickness direction T of the absorption main-body part 2, and urine discharged | emitted from a wearer. It is comprised by the liquid impervious sheet | seat which functions so that excretion liquids, such as may not leak outside.

  In the present invention, the liquid impervious sheet that can be used as the back sheet has various properties that can be used as the back sheet of the absorbent article (for example, liquid impermeability, flexibility, strength, preferably air permeability). There is no particular limitation as long as it is used, and for example, a resin film such as polyethylene or polypropylene; a laminate in which a nonwoven fabric is bonded to a resin film; a nonwoven fabric such as a hydrophobic nonwoven fabric or a laminated nonwoven fabric (for example, SMS nonwoven fabric) can be suitably used. it can. In addition, when using the above-mentioned nonwoven fabric as a back sheet, the kind in particular of the nonwoven fabric is not restrict | limited, For example, arbitrary nonwoven fabrics, such as a spun bond nonwoven fabric, a point bond nonwoven fabric, a melt blown nonwoven fabric, and an SMS nonwoven fabric, can be used. Further, the constituent fibers of the nonwoven fabric are not particularly limited, and for example, resin fibers made of thermoplastic resins such as polyolefin resins such as polyethylene and polypropylene; polyester resins such as polyethylene terephthalate can be used. One type of resin may be used alone, or two or more types of resins may be used in combination. The structure of the resin fiber is not particularly limited, and various composite fibers such as a core-sheath fiber may be used.

In the present invention, the basis weight of a liquid-impermeable sheet (for example, non-woven fabric) that can be used as the back sheet is not particularly limited as long as it has a predetermined liquid-impermeable (leakproof) and strength, for example in the range of ^{5g / m 2 ~100g / m 2} , preferably in the range of ^{10g / m 2 ~50g / m 2} . 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 the absorbent article, and the desired liquid-impermeable sheet, flexibility, strength, ventilation Arbitrary thickness according to property etc. can be adopted.

Moreover, in the above-mentioned embodiment, as shown in FIGS. 2-6, it is substantially the same as the back surface sheet 23 on the skin opposing surface side (namely, between the absorber 21 and the back surface sheet 23) of the back surface sheet 23. A liquid-impermeable back film 24 having a dimensional shape is disposed. The back film 24 is made of a thermoplastic resin film such as polyethylene and, like the back sheet 23, prevents the permeation of excretion fluid such as urine discharged from the wearer. It functions so as not to leak into clothes.
In addition, when the absorbent article includes such a back film, it is possible to more effectively suppress leakage of excretory fluid such as urine, but such a back film is essential in the absorbent article of the present invention. Therefore, the absorbent article of the present invention may not include such a back film.

[Absorber]
In the above-described embodiment, the absorbent body 21 has abdominal region A _F in the longitudinal direction L of the absorbent main body 2 (more specifically, the abdominal region side in the longitudinal direction L) as shown in FIG. The first region A _W1 in the width direction in the width direction W of the absorbent main body 2 extends from the vicinity of the end portion to the back region A _B (more specifically, the vicinity of the end portion on the back region side in the longitudinal direction L). More specifically, it extends from the width direction second region A _W2 (more specifically, near the other side end portion in the width direction W) from the vicinity of one end portion in the width direction W, and as a whole has a longitudinal direction L in longer and the longitudinal direction L substantially hourglass-shaped outer shape corresponding portion crotch region a _C is constricted narrower toward the inner side in the width direction W of the.
In the absorbent article of the present invention, the size and shape of the absorber is not limited to the aspect of the present embodiment, and at least the length in the longitudinal direction extends from the abdominal region to the back region in the longitudinal direction of the absorbent main body. As long as it has a long and long shape, any vertically long shape (for example, a rectangle, an ellipse, a bowl, etc.) according to various applications can be adopted.

  In the above-described embodiment, the absorbent body 21 is, as shown in FIGS. 1 to 6, between the topsheet 22 and the backsheet 23 in the thickness direction T of the absorbent main body 2 (more specifically, the topsheet). Two absorbent layers (i.e., the first absorbent layer) disposed between the back film 24 and the back film 24 and functioning to absorb and hold excretion fluid such as urine of the wearer that has permeated the top sheet 22. 21A and the second absorption layer 21B).

These two absorption layers are, in the absorption main body 2, the first absorption layer 21 </ b> A that is relatively disposed on the skin facing surface side and the second absorption layer that is relatively disposed on the non-skin facing surface side. 21B is joined by an arbitrary joining means (not shown) such as a hot-melt adhesive to constitute the above-described absorber 21 as an integrated product.
Of the two absorbent layers constituting the absorbent body 21, the first absorbent layer 21 </ b> A is abdominal region A _F (more specifically, in the longitudinal direction L) in the longitudinal direction L of the absorbent main body 2 in plan view. The first region A _W1 in the width direction in the width direction W of the absorbent main body 2 extends from the abdomen side end portion) to the back region A _B (more specifically, near the back side end portion in the longitudinal direction L). (More specifically, extending from the vicinity of one end portion in the width direction W) to the second width region A _W2 (more specifically, near the other end portion in the width direction W) It is constituted by an absorbent member having a long and a longitudinal direction L substantially hourglass-shaped outer shape corresponding portion crotch region a _C is constricted narrower toward the inner side in the width direction W of the longitudinal direction L as . In the present embodiment, the first absorption layer 21 </ b> A forms the outer shape of the absorber 21 in plan view.

On the other hand, the second absorbent layer 21B has a plan view from the abdominal region A _F in the longitudinal direction L of the absorbent main body 2 (more specifically, from the vicinity of the abdomen side end in the longitudinal direction L) to the back region A _B ( More specifically, in the width direction W, both end edges of the width direction W are both ends of the first absorbent layer 21A in the width direction W. edge (i.e., one side edge 21E ₃ and the other side edge 21E 4 in the widthwise direction _W) extends so as to be located on the inner side in the width direction W than as a whole is long in the longitudinal direction L It is comprised by the absorptive member which has a substantially rectangular external shape. By forming the second absorbent layer 21B that is relatively disposed on the non-skin facing surface side in this manner, the step at the edge portions in the width direction W of the first absorbent layer 21A and the second absorbent layer 21B is worn by the wearer. It is difficult to perceive.

  In the present invention, the absorbent member that can be used as the first absorbent layer and the second absorbent layer constituting the above-described absorber is not particularly limited as long as it can absorb and retain excretory fluid such as urine. Any absorbent member known in the art can be used. As such an absorbent member, for example, an absorbent core made of an arbitrary absorbent material covered with a core wrap sheet such as a hydrophilic tissue can be used. Furthermore, as an absorptive material which comprises the above-mentioned absorption core, a hydrophilic fiber, a superabsorbent polymer, etc. can be used, for example, More specifically, cellulose type, such as a pulverized pulp, cotton, rayon, acetate, etc. Fiber: Granules made of a superabsorbent polymer such as sodium acrylate copolymer can be used. These absorptive materials may be used alone or in combination of two or more absorptive materials. In addition, the 1st absorption layer and the 2nd absorption layer may use the absorbent member of the same structure, or may use the absorbent member of a different structure.

In the above embodiment, the first absorbent layer 21A, as shown in FIGS. 1 and 6, in plan view, the central portion in the width direction W of at least the crotch region A _C (i.e., in the longitudinal direction L the widthwise central axis C _L and overlapping portions) extending includes a through hole 21A _S penetrating the first absorbent layer 21A in the thickness direction T, furthermore, also the second absorbent layer 21B, shown in FIG. 1 as described above, in a position overlapping a central portion in the width direction W of the crotch region a _C into the through hole 21A _S and the thickness direction T of the first absorbent layer 21A, it is smaller than the through-hole 21A _S in a plan view and a through hole 21B _S penetrating the and second absorbing layer 21B has a size and shape in the thickness direction T. The through holes 21A _S and the through holes 21B _S communicate with each other in the thickness direction T, and penetrate the absorber 21 in the thickness direction T as a whole, and the opening area in the thickness direction T is stepwise. Different through holes are formed.
When the absorber has such a through hole, absorption in the thickness direction T of the excretory fluid can be promoted, and thus more excellent absorption performance (particularly, absorption rate) can be exhibited.

In the absorbent article of the present invention, the absorber does not need to be composed of two absorbent layers as in the above-described embodiment, and the absorber is composed of an absorbent member having a single-layer structure. Even if it is made, it may be comprised by the absorptive member which has a multilayer 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 have various characteristics (for example, absorbency, flexibility, etc.) that allow the absorbent member to function as the absorbent body of the absorbent article. If it is a thing, it will not restrict | limit in particular, Arbitrary basic weight, thickness, etc. are employable.

In the embodiment described above, the absorber 21, in the crotch region A _C, both edges in the width direction W (i.e., one side edge 21E ₃ and the other side edge 21E 4 in the width direction _W) of the pair External shape constricted toward the inner side in the width direction W so as to have a portion located on the inner side in the width direction W with respect to the inner side edge in the width direction W of each base portion 41 of the leak-proof wall portion It has a shape. When the absorbent body 21 has such a contour, the crotch region A _C, a small influence on the rigidity by the absorber 21, that variations and freedom of movement of the pair of leak-barrier walls of the above Therefore, when the wearer wears the urine collecting pad 1, the pair of leak-proof wall portions can be brought into close contact with each other while following the wearer's body shape (shape of the crotch portion). Therefore, the urine absorption pad 1 including the absorbent body 21 having such an outer shape is difficult to form a gap between the wearer's body (groin) and the pair of leak-proof wall portions. Side leakage can be prevented more reliably.

Furthermore, in the embodiment described above, the absorber 21 is in the abdominal region A _F and back region A _B, both edges in the width direction W of the absorber 21 (i.e., one side edge 21E ₃ and the other side in the width direction W The end edge 21E ₄ ) is disposed so as to have a portion located on the outer side in the width direction W with respect to the outer side end edge in the width direction W of the second joint portion 45 of each of the pair of leak-proof wall portions. Yes. When the absorbent body 21 is arranged in this way, when the wearer is lying sideways (that is, the excretory fluid discharged from the wearer is in the direction of gravity (more specifically, the absorption main body 2 Even in the case where it tends to flow in the outward direction of the width direction W), the excretory fluid flowing toward the outward side of the width direction W can be steadily absorbed by the absorber 21, and the side of the excretion fluid Leakage can be prevented more reliably.

In the absorbent article of the present invention, the liquid flow control unit in each of the pair of leak-proof wall portions may be arranged at least in the back region, but in the urine absorption pad 1 according to the above-described embodiment, liquid flow control unit F _C is arranged in each of the abdominal area a _F and back region a _B, furthermore, the absorbent body 21, as shown in FIG. 1, in plan view, longitudinal of the absorbent body 21 innermost longitudinal direction L of the inner side edge abdominal area side edge 21E ₂ in the direction L is in the width direction W of the second joint portion 45 of the disposed liquid flow control unit F _C to the abdominal area a _F than the inner-side end portion 45E _i located on the side located on the outer side of the longitudinal direction L, and, both edges in the width direction W of the absorber 21 (i.e., one side edge 21E ₃ and the width direction W the other side edge 21E ₄₎ width of the base portion 41 in the abdominal region _{a F} So as to be positioned on the outer side in the width direction W than the inner side edge in the direction W, and is located in the absorbent body unit 2.
When the absorbent body 21 is arranged in this manner, when the wearer is lying in a prone state (that is, the excreted liquid discharged from the wearer is in the direction of gravity (more specifically, the absorbent main body 2 But if the direction) toward the outer side of the width direction W, such as to facilitate the flow), the arranged liquid flow control unit F _C to the abdominal area a _F of the above, the lateral leakage of liquid waste in the abdominal area a _F Can be prevented from leaking from the abdomen side in the longitudinal direction L.

[Embossed part]
In the above embodiment, the absorbent body 2, and the skin-facing arranged on each of the longitudinal width direction center axis extending in the L C _L widthwise first region partitioned by A _W1 and the width direction second region A _W2 It has a pair of embossed portions 3 and 3 that are recessed in the thickness direction T from the surface. Each such pair of embossed portions 3, 3, as shown in FIG. 1, in the crotch region A _C, has a linear shape in plan view extending in the longitudinal direction L, more, of the absorbent main body 2 In the thickness direction T, the topsheet 22 and the absorbent body 21 are integrated by pressing while being recessed from the skin facing surface side. In addition, such an embossed part can be formed by pressing an absorption main-body part from the skin opposing surface to the thickness direction T using arbitrary heating or non-heating embossing means.

In the present embodiment, the pair of embossed portions 3, 3 includes the width direction length from the embossed portion 3 to the inner side edge in the width direction W of the base portion 41, and the width direction length of the first wall portion 42. and the width direction length total length of the second wall portion 43, the width from the widthwise center axis C _L described above to embossed portions 3 (specifically, to the center line in the width direction of the embossed portion 3) It arrange | positions so that it may become longer than a direction length. When a pair of embossed portions 3, 3 are arranged in this manner, become a starting point the pair of embossed portions 3, 3 bent, widthwise center extending along the widthwise center axis C _L of the absorbent main body 2 The absorbent body 2 is easily deformed so that the portion protrudes toward the skin-facing surface (that is, the cross-sectional shape along the longitudinal central axis _CW is substantially W-shaped), and the above-described pair Since the standing height of the leak-proof wall portion is likely to be higher than the protruding height of the central portion in the width direction protruding toward the skin facing surface side, the skin facing surface in the central portion in the width direction of the absorbent main body 2 is worn. The excretion fluid discharged from the wearer can be easily absorbed by the absorbent body 21 while being in close contact with or close to the crotch portion of the wearer, and the lateral leakage of the excretion fluid can be more reliably prevented.

  In addition, in the present invention, the pair of embossed portions is obtained in a manner other than the above embodiment as long as the pair of embossed portions can be bent starting points of the absorption main body portion. Like the above-mentioned embodiment, it is not necessarily formed so that a surface sheet and an absorber may be integrated, for example, you may form only in an absorber.

  In the present invention, the shape of the embossed portion in plan view is not particularly limited, and an arbitrary shape such as a wavy shape, a wavy shape, a curved shape, or a zigzag shape is adopted in addition to the linear shape as in the above-described embodiment. be able to. In addition, since this embossed part is not an essential component in the absorbent article of the present invention, the absorbent article of the present invention may not have such an embossed part.

<Leakage barrier>
In the urine collecting pad 1 according to the above-described embodiment, the pair of leak-proof wall portions are located at both ends in the width direction W of the absorption main body 2 and continuously extend over both ends in the longitudinal direction L. It is formed by a pair of side sheets 4 and 4. Each of the pair of side sheets 4, 4 has five elastic members EL that can contract the pair of side sheets 4, 4 in the longitudinal direction L in the vicinity of the inner side edge in the width direction W. Is arranged.

  Hereinafter, various components that can form a pair of leak-proof wall portions in the absorbent article of the present invention will be described in more detail using the urine absorbing pad 1 according to the above-described embodiment.

[Side sheet]
In the above-described embodiment, the pair of side sheets 4, 4 is formed in the width direction W of the absorbent main body 2 on the skin facing surface side of the absorbent main body 2 (more specifically, on the skin facing surface side of the topsheet 22). A pair of strip-like liquid-impermeable sheets that are long in the longitudinal direction L and can function as a leak-proof wall when the urine collecting pad 1 is worn, and the inner side edge in the width direction W stands up. Is formed by.

  In the present invention, a strip-shaped liquid-impermeable sheet that can be used as a side sheet has various characteristics that can be used as a side sheet of an absorbent article (for example, liquid-impermeable, touch, flexibility, strength (particularly strength when wet)). Etc.), for example, hydrophobic non-woven fabric (for example, spunbond non-woven fabric, point-bond non-woven fabric, SMS non-woven fabric, etc. having hydrophobicity or imparted hydrophobicity); liquid impervious Synthetic resin films having the following: a laminate of these can be used.

  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 the effects of the present invention are not impaired, and depending on the desired liquid-impermeable, touch, flexibility, etc. Any external shape, basis weight, thickness, etc. can be employed.

In the above-described embodiment, each of the pair of side sheets 4, 4, when the urine absorbing pad 1 is worn, the inner side edge in the width direction W, which is a free end, stands up toward the skin facing surface side, A pair of leak-proof wall portions that function as leak-proof walls that prevent lateral leakage of excretion fluid such as urine discharged from the wearer can be formed. As described above, each of the pair of leak-proof wall portions includes a base 41 that faces the absorption main body 2 and is fixed to the absorption main body 2, and a width of the base 41 on the skin facing surface side of the base 41. A first wall portion 42 that is connected to the inner side edge in the direction W and that stands on the inner surface side in the longitudinal direction L toward the skin facing surface side when worn, and the skin facing surface of the first wall portion 42 A second wall portion 43 that is connected to the outer side edge in the width direction W of the first wall portion 42 on the side and the inner side portion in the longitudinal direction L rises toward the skin facing surface side when worn; the have, furthermore, in the abdominal area a _F and back region a _B, comprises a longitudinal L edge of the side sheets 4 and so as to have a predetermined longitudinal length and a predetermined length in the width direction provided with a arranged above the liquid flow control unit F _C, length than the liquid flow control unit F _C The portion located inward of the longitudinal direction L, and a standing uncontrolled unit S _P having the same structure and function as normal leakage preventing walls.

Liquid flow control unit F _C, as described above, the first joint portion 44 having a base 41 longitudinal length each in the longitudinal direction L of the outer portion and the joining and predetermined first wall portion 42 And the first wall portion 42 and the second wall portion 43 are joined to the outer side portions in the longitudinal direction L, and the length in the longitudinal direction of the inner side edge in the width direction W is the first joint portion 44. A second joining portion 45 having a length in the width direction W that is not less than the length in the width direction W and less than the length in the width direction W, and the first wall portion 42 and the second wall described above. by controlling the standing structure parts 43, the liquid waste discharged from the wearer, a cavity portion formed between the liquid flow control unit F _C of the standing structure and the absorbing body portion 2 of the skin-facing surface side of the surface while dammed as confined to F _S, the liquid waste flowing toward the outer side in the longitudinal direction L, inward in the width direction W It can be induced to face the.

The pair of side sheets 4 and 4 are joined to the absorber 21 (more specifically, the first absorbent layer 21A) on the outer side in the width direction W from the liquid flow control unit Fc. In addition, the joint portion (hereinafter also referred to as “third joint portion”) is, in the width direction W, both end edges in the width direction W of the absorber 21 (that is, in the width direction W of the absorber 21). on the other hand are arranged on the inner side of the position in the width direction W than the position or the both edges overlap the side edges 21E ₃ and the other side edge 21E ₄₎ and the thickness direction T. When the pair of side sheets 4, 4 stands up on the skin facing surface side to form a leak-proof wall, the third joint part, which is a joint part between the pair of side sheets 4, 4 and the absorber 21, While this is a part that becomes a starting point of the leak-proof wall and a part where there is a possibility that the waste fluid whose flow is controlled by the liquid flow control unit Fc may remain, such a third joint portion absorbs as described above. It arrange | positions in the position which overlaps with the both-ends edge in the width direction W of the body 21 in the thickness direction T, or the position inside the width direction W rather than the said both-ends edge (namely, 3rd junction part and thickness direction T). The absorber 21 extends in the width direction W to a position overlapping with the third joint portion or a position outside the third joint portion in the width direction W), and excretion remaining in the third joint portion or the vicinity thereof. Even if the liquid oozes outward in the width direction W through the top sheet 22 or the like, the third joint The excretion fluid can be absorbed by the extending portion of the absorbent body 21 extending to the position overlapping with the thickness direction T or the position outside the third joining portion in the width direction W. The lateral leakage of excretory fluid can be prevented more reliably.
In the present invention, the above-described arrangement form of the third joint portion may be applied to one or both of the abdominal region and the back region, but at least in the back region where the wearer's body pressure is easily applied. It is preferable to apply. Since the back region is a region in which excretion fluid is likely to be oozed due to the body pressure of the wearer, it is possible to more effectively exhibit the operational effects of the arrangement form of the third joint portion described above.

  Further, in the present invention, the joining form of the pair of side sheets and the absorption main body part is not limited to such an aspect. For example, the pair of side sheets described above is outward in the width direction than the liquid flow control part. On the side, the liquid-impermeable back film or the back sheet may be joined, and in this case, the excretory liquid is out of the width direction by the joined liquid-impermeable side sheet and the back film or the back sheet. Since it can suppress exuding to the side, the side leakage of excretory liquid can be prevented more reliably.

  In the present invention, the joining means that can be used for forming the above-described first joint, second joint, third joint, and the like is not particularly limited as long as the effects of the present invention are not impaired. Arbitrary joining means such as adhesion means such as a mold adhesive and welding means such as ultrasonic welding can be employed.

Then, in the embodiment described above, the inner side edge in the longitudinal direction L of the first joint portion 44 of the liquid flow control unit F _C is extends linearly along the width direction W. Thus, when the inner side edge in the longitudinal direction L of the first joint portion 44 extends linearly along the width direction W, the inner side edge in the longitudinal direction L of the first joint portion 44. standing structure of the first wall portion 42 and the second wall portion 43 erected as a starting point can be more steadily perform the function of stably easy, above the liquid flow control unit F _C.

Further, in the present embodiment, as described above, the liquid flow control unit F _C is not disposed in each of the abdominal area A _F and back region A _B, the absorber 21, in plan view, in the longitudinal direction L outside the longitudinal direction L than the inner-side end portion 45E _i located on the innermost side in the longitudinal direction L of the inner side edge abdominal region side edge 21E ₂ in the widthwise direction W of the second joint portion 45 while positioned in a square side, the outer side in the width direction W than the inner side edge in the width direction W of the base portion 41 both edges is at least the abdominal region a _F and back regions a _B in the width direction W of the absorber 21 In the case where the wearer is lying in a prone state (that is, the excretion fluid discharged from the wearer is directed to the abdomen side in the longitudinal direction L). But if easily flows like) in a direction, the abdominal area a The arranged liquid flow control unit F _C on while preventing lateral leakage of liquid waste in the abdominal area A _F steadily, can be difficult to occur also leak from the abdomen side in the longitudinal direction L.

[Elastic member]
In the above-described embodiment, each of the pair of side sheets 4, 4 is arranged in the longitudinal direction L in the vicinity of the inner side edge in the width direction W as shown in FIG. 1. Five (a plurality of) elastic members EL are disposed along the longitudinal direction L in order to contract and promote the rising of the inner side edge in the width direction W.
In the present invention, the plurality of elastic members arranged on the pair of side sheets exerts a contraction force in the longitudinal direction on the absorbent main body in a deployed state (specifically, the absorbent main body via the pair of side sheets). The material is not particularly limited as long as it can be imparted. For example, natural rubber thread rubber or flat rubber; urethane, ethylene-vinyl acetate copolymer (EVA) or other thermoplastic elastomer molded into a thread or belt Any elastic member can be used.

  The dimensional shape of the elastic member that can be used in the absorbent article of the present invention is not particularly limited as long as it can shrink the absorbent main body in a state of being expanded through the side sheet in the longitudinal direction. Any dimensional shape according to the size can be adopted. As such a dimensional shape, for example, the length of the elastic member in the longitudinal direction is ¼ or more, preferably １ ／ or more of the total length of the absorbent article, and the fineness is in the range of 200 dtex to 800 dtex, preferably It is within the range of 300 dtex to 700 dtex. In addition, the number of elastic members is not particularly limited as long as it can contract the absorption main body portion in a state of being expanded through the side sheet in the longitudinal direction, and the elastic member is provided in each of the pair of leak-proof wall portions, Arbitrary numbers such as one, two, three or more can be arranged.

  Moreover, in the urine picking pad 1 which concerns on the above-mentioned embodiment, as shown in FIG. 1, five (plural) elastic members EL arrange | positioned at each of a pair of leak-proof wall part (side sheet), The longitudinal length of the elastic member EL located on the outer side in the width direction W is longer than the longitudinal length of the elastic member EL located on the inner side in the width direction W. As described above, when the longitudinal length of the elastic member EL located on the outer side in the width direction W is longer than the longitudinal length of the elastic member EL located on the inner side in the width direction W, a pair In the outer side portion in the width direction W of the leakage preventing wall portion, it becomes easy to maintain the standing structure by the first wall portion 42 and the second wall portion 43, and durability against excretion liquid toward the outer side in the width direction W On the other hand, the inner side portions in the width direction W of the pair of leak-proof wall portions (that is, the portion serving as the starting point and the top portion of the pair of leak-proof wall portions) are deformed. The degree of freedom of movement can be increased, and the pair of leak-proof wall portions can be easily brought into close contact with each other while following the wearer's body shape (shape of the crotch portion). Thereby, the urine absorption pad 1 in which such a plurality of elastic members are arranged can exhibit the leakage prevention function of the pair of leakage prevention wall portions more satisfactorily.

  Further, in the urine collecting pad 1 according to the above-described embodiment, each of the pair of leak-proof wall portions is formed to be contractible in the longitudinal direction L by a plurality of elastic members EL in a plan view. A contraction region extending to L, and the contraction region has a longitudinal length of a portion located on the inner side in the width direction W and a longitudinal direction of a portion located on the outer side in the width direction W It is formed longer than the length. Thus, in each contraction region of the pair of leak-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 length of the pair of leak-proof wall portions is too long, the top portion of the pair of leak-proof wall portions can hardly be rolled up, and the leak-proof function of the pair of leak-proof wall portions can be more reliably exhibited.

Furthermore, in the embodiment described above, the absorber 21, as shown in FIG. 1, and the wide portion 21M length in the width direction W of the absorber 21 is the longest part in the abdominal area A _F, abdominal area A _F and crotch area a _C of the length in the width direction W length of the wide portion 21M in the width direction W of the absorber 21 at the boundary (i.e., the maximum length in the width direction W of the absorber 21 in the abdominal area a _F ) Smaller than the narrowed portion 21N, and the narrowed portion 21N overlaps the above-described contraction region in plan view. Thus, at the boundary of the abdominal area A _F and crotch area A _C, less narrower than the maximum length in the width direction W of the absorber 21 the length in the width direction W of the absorber 21 in the abdominal area A _F When the portion 21N is provided, the rigidity of the portion of the urine removing pad 1 having the narrow portion 21N is relatively low. Therefore, when the urine removing pad 1 is worn, the urine removing pad 1 is It becomes easy to bend | curve so that the surface on the skin opposing surface side may be dented starting from the part which has 21 N of narrow parts. In addition, since the narrow portion 21N overlaps the above-described contraction region in plan view, the urine collection pad 1 has a large curvature in the abdominal region _AF when the urine collection pad 1 is worn. boundary between the crotch region a _C (i.e., the portion that overlaps the narrow portion 21N and the thickness direction T) in the skin facing side of the surface of the second wall portion 43 of the leakage preventing wall is in Figure 7 As shown, the above-described leak-proof wall portion tends to stand up toward the skin-facing surface side while maintaining a planar shape substantially parallel to the surface of the absorption main body 2 on the skin-facing surface side. Thus, according urine absorbing pad 1, a leakage preventing wall of the portion where the curvature is increased when worn (i.e., the abdominal area A _F and the boundary portion between the crotch region A _C), and the skin surface of the wearer (In other words, it is difficult to form a gap between the leak-proof wall portion and the skin surface of the wearer), thereby further preventing lateral leakage of excretory fluid. It can be surely prevented.

  The present invention can be applied to various absorbent articles such as disposable diapers, sanitary napkins, and incontinence pads in addition to the urine collecting pad of the above-described embodiment. In addition, the absorbent article of the present invention is not limited to the above-described embodiment, and can be appropriately combined, substituted, changed, and the like without departing from the purpose and spirit of the present invention. In this specification, ordinal numbers such as “first” and “second” are used to distinguish items with the ordinal numbers, and mean the order, priority, importance, etc. of each item. Not what you want.

1 Urine pad (absorbent article)
2 Absorbing Body 21 Absorber 21A First Absorbing Layer 21B Second Absorbing Layer 21E ₁ Back Region Side Edge 21E ₂ Abdominal Region Side Edge 21E One Side Edge in ₃ Width Direction 21E Other Side Edge in ₄ Width Direction 21M Wide part in the abdominal region 21N Narrow part 22 Top sheet 23 Back sheet 24 Back film 3 Embossed part 4 Side sheet (leakproof wall part)
41 Base portion 42 First wall portion 43 Second wall portion 44 First joint portion 45 Second joint portion 45E _i Inner side end portion A _F Abdominal region A _C Crotch region A A _B Back region A _W1 Width direction first region A _W2 widthwise second region EL elastic member F _C liquid flow control unit

Claims (8)

An absorbent main body having an absorbent body having a longitudinal direction, a width direction, and a thickness direction, and having an abdominal region, a crotch region, and a back region in the longitudinal direction, and both end portions of the absorbent main body portion in the width direction And a pair of leak-proof wall portions continuously extending over both ends in the longitudinal direction.
Each of the leak-proof wall portions is connected to a base portion facing the absorption main body portion and fixed to the absorption main body portion, an inner side edge in the width direction of the base portion, and a skin facing surface side when worn And a second wall portion that is connected to the outer side edge in the width direction of the first wall portion and that rises toward the skin facing surface side when worn. The standing of the first wall portion and the second wall portion including at least the longitudinal edge and having a predetermined longitudinal length and a predetermined width direction length at least in the back region. It has a liquid flow control unit that controls the flow of excretory liquid in the width direction and the thickness direction by controlling the structure,
Further, the liquid flow control unit joins the base and the first wall and joins the first joint having a predetermined length in the longitudinal direction, the first wall and the second wall. And the 2nd junction part whose longitudinal direction length of the inner side edge in the said width direction is more than the said longitudinal direction length of the said 1st junction part, and less than the longitudinal direction length of the outer side edge in the said width direction And including,
In the plan view, the absorber has an edge on the back region side in the longitudinal direction of the absorber on the innermost side in the longitudinal direction of the inner edge in the width direction of the second joint portion. The both end edges in the width direction of the absorbent body are located at the outer side in the longitudinal direction from the inner side edge part positioned, and at least the inner side edge in the width direction of the base part in the back region. Is also arranged in the absorption main body so as to be located on the outer side in the width direction ,
The absorbent main body portion is disposed in each of the first and second widthwise regions defined by the widthwise central axis extending in the longitudinal direction, and a pair of embossments that are recessed from the skin facing surface in the thickness direction. Part
The total length of the width direction length from the embossed portion to the inner side edge in the width direction of the base portion, the width direction length of the first wall portion, and the width direction length of the second wall portion, The said absorbent article longer than the width direction length from the said width direction center axis to the said embossed part .   In the crotch region, the absorbent body is configured such that both end edges in the width direction of the absorbent body are located on the inner side in the width direction with respect to the inner side edge in the width direction of the base portion. The absorptive article according to claim 1 which has the outside shape constricted toward the inward side of the width direction.   In the abdomen region and the back region, the absorbent body has both end edges in the width direction of the absorber closer to the outer side in the width direction than the outer side edge in the width direction of the second joint portion. The absorbent article according to claim 1 or 2, which is located. The absorbent article as described in any one of Claims 1-3 with which the inner side edge in the said longitudinal direction of the said 1st junction part is extended linearly along the said width direction. Each of the pair of leak-proof wall portions has a plurality of elastic members arranged in the longitudinal direction and arranged in the width direction in plan view, and the plurality of elastic members are , the longitudinal length of the elastic member located outward in the width direction is longer than the longitudinal length of the elastic member located inwardly of the width direction, any one of claims 1-4 Absorbent article as described in 1. Each of the pair of leak-proof wall portions has a contraction region extending in the longitudinal direction formed so as to be contractible in the longitudinal direction by the plurality of elastic members in plan view, 6. The absorbent article according to claim 5 , wherein the contraction region has a length in a longitudinal direction of a portion located on the inner side in the width direction being longer than a length in a longitudinal direction of a portion located on the outer side in the width direction. . The absorbent body includes a narrow portion in which a length in the width direction of the absorbent body is smaller than a maximum length in the width direction of the absorbent body in the abdominal region at a boundary portion between the abdominal region and the crotch region. Have
The absorbent article according to claim 6 , wherein the narrow portion overlaps the contraction region in plan view. In each of the pair of leak-proof wall portions, the liquid flow control unit is disposed in each of the abdominal region and the back region,
In the planar view, the abdominal region side edge in the longitudinal direction of the absorbent body is located on the innermost side in the longitudinal direction among the inward side edges in the width direction of the second joint portion in plan view. The both end edges in the width direction of the absorber are located at the inner side in the width direction of the base in at least the abdominal region and the back region, and located on the outer side in the longitudinal direction from the inner side end portion positioned. as of the side edge located on the outer side of the width direction, the are arranged in the absorbent body portion, the absorbent article according to any one of claims 1-7.

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