TW201842888A - Absorbent article - Google Patents

Abstract

The present invention provides an absorbent article that is capable of, while firmly preventing lateral leakage of an excreted liquid, also rendering leakage thereof from the back side in the longitudinal direction to be unlikely to occur. This absorbent article is provided with: an absorbent body (2) that is provided with an absorber (21); and a pair of leak-proof wall parts, wherein each of the leak-proof wall parts has a base (41), a first wall (42), a second wall (43), and a liquid flow control part (Fc) that is configured by including a first joint (44) and a second joint (45), and the absorber (21) is positioned within the absorbent body (2) such that, in a plan view, the edge on the back region side in the longitudinal direction is positioned longitudinally outside an inside edge (45Ei) positioned furthest inside in the longitudinal direction among inside edges in the width direction of the second joint (45), and such that both edges in the width direction of the absorber (21) are positioned outside of, in the width direction, the inside edges in the width direction of the base (41) in at least a back region (AB).

Description

Absorbent article

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

Conventionally, in absorbent articles such as urine absorbing pads and disposable diapers, the purpose is to prevent side leakage of excretory fluid such as urine (that is, leakage from the widthwise end of the absorbent article). A pair of leak-proof walls (i.e., three-dimensional wrinkles) are provided on both sides of the absorbent article in the longitudinal direction (i.e., both ends in the width direction) so as to stand toward the skin surface of the user.

Such an absorbent article for preventing side leakage of excretory fluid, for example, in Patent Document 1, includes a thin sheet-shaped body portion in which an absorbent core is disposed between a lining sheet and a top sheet, and two of the body portion. A pair of side sheets provided on the side portions across the entire length direction of the main body portion, and each of the pair of side sheets includes one side of a zigzag line provided across the entire length of the length direction. The portion on the other side of the zigzag line is joined to the band-shaped joining portion of the main body portion by an inner edge in the width direction perpendicular to the zigzag line, that is, the longitudinal direction of the joining portion. The outer side toward the width direction is folded back, and the inner side toward the width direction is folded back, and a part is a side wall portion rising from the main body portion. The side wall portion is provided with both ends fixed in the longitudinal direction. Two side wall end portions on the joint portion, and standing portions that are continuous from the two side wall end portions and stand from the zigzag line between the two side wall end portions, And an elastic member which is arranged across the entire length of the rising portion in the longitudinal direction and shrinks the rising portion by contraction to form a wrinkle, and one of the two side wall end portions is Equipped with a portion that is continuous from the rising portion, the elastic member is arranged and is not engaged with the joint portion and the main body portion, and the elastic member is contracted to rise from the main body portion lower than the rising portion. And a fixing portion which is adjacent to the outside of the half-rise portion in the width direction and is fixed to the joint portion. According to the absorbent article of Patent Document 1, side leakage from the vicinity of the end portion in the longitudinal direction of the absorbent article can be prevented. [Prior Art Literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open No. 2010-094321

[Problems to be Solved by the Invention]

However, since the absorbent article disclosed in Patent Document 1 is in the half-rise portion described above, both end portions in the width direction of the absorbent core are positioned in a wider width direction than the fixing portions of the pair of side wall portions. Square side, even if the excretory fluid flowing up to the half-rise portion of the side wall portion is intercepted by the half-rise portion, the intercepted excretion cannot be sufficiently absorbed by the absorbent core, and the Part of the outer side of the absorbent core in the width direction may leak. Furthermore, in the absorbent article of this patent document 1, since both the edge part of the longitudinal direction of an absorbent core is a length direction, it is located substantially the same as the inside edge part of the longitudinal direction in the said half-rise part. Position (that is, in the longitudinal direction, the absorptive core does not exist on the outer side in the longitudinal direction than the position substantially equal to the above-mentioned half-elevated inner-side end portion), and in particular, the fecal fluid is repeatedly slept from sleep. In the case where the user is discharged, it is impossible to absorb the excretion fluid flowing in the longitudinal direction by suppressing the flow in the width direction by the rising portion and the semi-rising portion of the side wall portion described above. The core is sufficiently absorbed, and there is a possibility that the excretion liquid leaks out from the back side in the longitudinal direction of the absorbent article.

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

An absorbent article according to one aspect (Aspect 1) of the present invention includes an absorbent body portion having an absorbent body having a length direction, a width direction, and a thickness direction. The abdomen area and the intertrochanter are provided in the length direction. And a pair of leak-proof wall portions, which are respectively located at both ends in the width direction of the absorbing body portion and extend across both ends in the longitudinal direction, respectively, and the leak-proof wall portions And a base portion facing the absorbent body portion and fixed to the absorbent body portion, and connected to an inner side end edge of the base portion in the width direction and standing toward the opposite side of the skin when worn The first wall portion and the second wall portion connected to the outer side end edge in the width direction of the first wall portion and standing toward the opposite side of the skin when worn, have at least the back area, and have : Including the edge in the longitudinal direction and having a predetermined length in the longitudinal direction and a predetermined width in the longitudinal direction, the standing structure of the first wall portion and the second wall portion is controlled to be arranged. A liquid flow control unit that controls the flow of liquid in the width direction and the thickness direction, and the liquid flow control unit includes a first joint that joins the base portion and the first wall portion and has a predetermined length in the longitudinal direction. And the length of the length of the inner side end edge in the width direction is greater than the length in the length direction of the first joint portion, and the outer portion in the width direction is joined to the first wall portion and the second wall portion. The second joint portion having a length in the longitudinal direction of the side edge of the square is less than the length; the absorbent body is a plan view, and the side edge of the back region in the longitudinal direction of the absorbent body is located wider than the width of the second joint portion. Among the inner side end edges in the direction, the inner side end portion located on the innermost side in the longitudinal direction is more the outer side in the longitudinal direction, and both end edges in the width direction of the absorbent body are at least at The back region is disposed on the outer side in the width direction than the inner side end edge in the width direction of the base portion, and is disposed in the absorption body portion.

Since the absorbent article of this aspect 1 is provided with "a pair of leak-proof wall part which has a base part, a 1st wall part, and a 2nd wall part, it has a liquid flow control part at least in a back area, This liquid flow control part contains : A first joining portion that joins the base portion and the first wall portion and has a predetermined length in the longitudinal direction; and a longitudinal direction that joins the first wall portion and the second wall portion and an inner side end edge in the width direction The length is equal to or greater than the length in the longitudinal direction of the first joining portion, and the length of the length of the outer side end edge in the width direction is less than the length of the second joining portion; and the absorber is a plan view of the absorber. The back region side end edge in the longitudinal direction is located in the longitudinal direction more than the inner side end portion on the innermost side in the longitudinal direction among the inner side end edges in the width direction of the second joint portion. And the both end edges in the width direction of the absorbent body are located at least in the back area on the outer side in the width direction than the inner side end edges in the width direction of the base, Configuration In the above-mentioned absorption body portion ", the liquid flow control portion described above can be formed to have a sufficient standing height by the first wall portion and the second wall portion, and is suitable for being held by a user. The discharged excrement has a specific standing structure with sufficient durability. Accordingly, the absorbent article according to the aspect 1 is an excretory fluid discharged from the user and flowing toward the outer side in the longitudinal direction and the width direction on the surface on the side opposite to the skin of the absorbent body portion, and is formed on the The specific rising structure in the above-mentioned liquid flow control portion and the hollow portion between the skin-opposing surfaces of the absorbing body portion are sealed while being blocked, so that the surface on the skin-opposing surface side of the absorbing body portion can be absorbed into the absorbing body portion. It can be absorbed by the body, and the excretion fluid flowing toward the outer side in the longitudinal direction can be absorbed through the surface of the opposite side of the skin of the absorption body part while being induced to the inner side in the width direction by the liquid flow control section. Absorbent body in main body part absorbs. As a result, the absorbent article according to the aspect 1 can surely prevent side leakage of the excretion liquid, and it is difficult to leak from the back side in the longitudinal direction.

Furthermore, in another aspect (Aspect 2) of the present invention, in the absorbent article according to Aspect 1, the absorbent body has two of the widthwise directions of the absorbent body in the inter-strand area. The end edge is in a shape of an outer shape that is narrower toward the inner side in the width direction than the inner side end edge in the width direction of the base portion.

In the absorbent article according to aspect 2, the absorbent body has the following: in the inter-strand region area, both end edges in the width direction of the absorbent body are located on the inner side than the width direction of the base portion; The end edge is more inwardly shaped in the widthwise direction, and the shape of the outer shape shrinks toward the widthwise inward direction. Therefore, in the area of the intersegmental portion, the degree of freedom of deformation and movement of the pair of leak-proof wall portions is greater. The pair of leak-proof wall portions can be closely adhered while following the shape of the user's body (the shape of the intertrochanter portion). As a result, the absorbent article according to the second aspect is difficult to form a gap between the user's body (inter-strand portion) and a pair of leak-proof wall portions, so that it is possible to more reliably prevent side leakage of the excretion fluid.

In a further aspect of the present invention (Aspect 3), in the absorbent article of Aspect 1 or 2, the absorbent body is the width of the absorbent body in the abdominal area and the back area. Both end edges in the direction are located on the outer side in the width direction than the outer side end edges in the width direction of the second joint portion.

In the absorbent article of this aspect 3, in the abdomen area and the back area, both end edges in the width direction of the absorbent body are located on an outer side than in the width direction of the second joint portion. The edge is more on the outer side in the width direction, so even if the user sleeps in the lateral direction (that is, the case where the excretion liquid flows easily in the direction of gravity (absorbs the direction of the outer side in the width direction of the body portion)), The excretory fluid flowing toward the outer side in the width direction may be reliably absorbed by the above-mentioned absorbent body, and side leakage of the excretive fluid may be further reliably prevented.

In a further aspect of the present invention (Aspect 4), in the absorbent article according to any one of Aspects 1 to 3, the absorbent body portion includes a portion that is disposed to extend in the longitudinal direction. A pair of embossed portions in the widthwise first area and the widthwise second area where the central axis of the width direction is divided and recessed from the opposite side of the skin toward the thickness direction, from the embossed portion to the base portion in the width direction The length in the width direction up to the inner side end edge, the width in the width direction length of the first wall portion, and the width in the width direction length of the second wall portion are longer than the distance from the center axis in the width direction to the embossed portion. Longer in width direction.

In the absorbent article of this aspect 4, the absorbent body portion includes the pair of embossed portions, and further, the width direction length from the embossed portion to an inner side end edge in the width direction of the base portion. The total length of the widthwise length of the first wall portion and the widthwise length of the second wall portion is longer than the widthwise length from the widthwise central axis to the embossing portion. The pair of embossed portions becomes the starting point of the zigzag. The widthwise central portion extending along the widthwise central axis of the absorbent body portion protrudes toward the opposite side of the skin (that is, the cross-sectional shape along the lengthwise central axis is approximately W-shaped The deformation of the absorption main body portion is facilitated, and the rising height of the pair of leak-proof wall portions is easily higher than the protruding height of the widthwise central portion protruding toward the opposite side of the skin. As a result, the absorbent article according to the aspect 4 can make the skin-opposite side of the absorbent body portion in the widthwise central portion in close contact with or close to the user's interfemoral portion, and the excretion fluid discharged from the user can be obtained. It is easy to absorb to the absorbent body, and it is possible to more surely prevent side leakage of the excretion fluid.

In a further aspect of the present invention (Aspect 5), in the absorbent article according to any one of Aspects 1 to 4, the inner side end edge of the first joint in the longitudinal direction is along the It extends linearly in the width direction.

In the absorbent article of this aspect 5, since the inner side edge in the said longitudinal direction of the said 1st joint part is extended linearly along the said width direction, the said longitudinal direction of this 1st joint part is extended. The rising structure of the first wall portion and the second wall portion that the inner side end edge of the middle as a starting point is easy to stabilize, and the function of the liquid flow control unit described above can be more reliably exhibited.

In a further aspect of the present invention (Aspect 6), in the absorbent article of any of Aspects 1 to 5, the pair of leak-proof wall portions each have a lengthwise direction in a plan view. A plurality of elastic members extending and arranged side by side in the width direction, and the plurality of elastic members are in the length direction of the elastic member located on the outer side in the width direction than the length of the elastic member on the inner side in the width direction. The length of the elastic member in the longitudinal direction is longer.

In the absorbent article of this aspect 6, the plurality of elastic members are respectively arranged on a pair of leak-proof wall portions, because the length of the elastic member located on the outer side of the width direction is longer than the width of the elastic member. The length of the lengthwise direction of the elastic member on the inner side of the direction is longer. Therefore, it is easy to maintain the first wall portion and the second wall portion in the outer side portion in the width direction of the pair of leak-proof wall portions. The resulting rising structure can further ensure the durability of the excretion fluid toward the outer side in the width direction, and the inner side portion in the width direction of the pair of leak-proof wall portions (i.e., the first The part of the pair of leak-proof wall portions that becomes the starting point and the top portion) has a high degree of freedom of deformation and movement, and can easily follow the shape of the user's body while the pair of leak-proof wall portions ( The shape of the intergranular part) is closely adhered. Thereby, the absorbent article of this aspect 6 can exhibit the leak-proof function of the said pair of leak-proof wall parts more favorably.

In a further aspect of the present invention (Aspect 7), with respect to the absorbent article of Aspect 6, the pair of leak-proof wall portions each have a plurality of elastic members in a plan view. The contraction area formed to be contractible in the length direction and extending in the length direction is a length in the length direction of a portion located on the inner side of the width direction, which is longer than that of the portion located on the outer side of the width direction. The length of the part is longer in the longitudinal direction.

In the absorbent article of this aspect 7, in each of the contraction areas of the pair of leak-proof wall portions, the length in the lengthwise direction of the portion located on the inner side of the width direction is greater than the length of the portion located on the outer side in the width direction. The length of the side portion is longer in the longitudinal direction. In the pair of leak-proof wall portions, the top portion becomes difficult to roll up, and the leak-proof function of the pair of leak-proof wall portions can be more reliably exerted.

In a further aspect of the present invention (Aspect 8), in the absorbent article according to Aspect 7, the absorbent body includes the absorbent body at the interface between the abdominal area and the interfemoral area. The length in the width direction is a narrow width portion that is smaller than the maximum length in the width direction of the absorbent body in the abdominal area, and the narrow width portion overlaps the contraction area in a plan view.

In the absorbent article of this aspect 8, the absorbent body is a boundary portion between the abdominal area and the intertrochanter area, and the length in the width direction of the absorbent body is longer than the width of the absorbent body in the abdominal area. The maximum width in the direction is narrower, and the width of the narrow portion is relatively low. The absorbent article has a relatively low rigidity. Therefore, when the absorbent article is worn, the absorbent article has the width described above. The narrow part serves as a starting point, and the surface on the opposite side of the skin is recessed and easily bent. Furthermore, since the absorbent article according to the aspect 8 is a plan view, the narrow width portion overlaps with the contraction area described above. Therefore, when the absorbent article is worn, it is at the interface between the abdominal area with large curvatures and the area between the thighs (that is, The portion overlapping the narrow width portion in the thickness direction), the surface on the skin-opposing surface side in the second wall portion of the leak-proof wall portion is maintained in a plane shape that is substantially parallel to the surface on the skin-opposing surface portion of the absorption body portion In the aspect, the leak-proof wall portion described above is easily erected toward the skin facing surface side. As a result, the absorbent article according to the aspect 8 can ensure a larger contact area between the leak-proof wall portion of the curvature (that is, the boundary portion between the abdominal region and the intertrochanter region) and the user's skin surface when worn. (In other words, it is difficult to form a gap between the leak-proof wall portion and the skin surface of the user.) Therefore, it is possible to more reliably prevent side leakage of the excretion liquid.

In a further aspect of the present invention (Aspect 9), in the absorbent article according to any one of Aspects 1 to 8, each of the liquid flow control units in the pair of leak-proof wall portions is a separate The absorptive body is disposed in the abdomen area and the back area. The absorptive body is viewed from above. The abdomen area side edge in the longitudinal direction of the absorber is located inward of the width direction of the second joint portion. Among the side end edges, the inner side end portion located on the innermost side in the longitudinal direction is more the outer side in the longitudinal direction, and both end edges in the width direction of the absorbent body are at least in the abdominal area and the aforementioned area. The back region is disposed in the absorbent body portion so as to be located on the outer side in the width direction than the inner side end edge in the width direction of the base portion.

In the absorbent article of this aspect 9, each of the liquid flow control portions of the pair of leak-proof wall portions is disposed in the abdominal area and the back area, respectively, and the absorbent is a plan view of the absorbent. The end edge of the abdomen region in the longitudinal direction of the body is located more than the inner edge of the inner side of the longitudinal direction than the inner edge of the inner edge of the second joint in the width direction. An outer side in the longitudinal direction, and both end edges in the width direction of the absorbent body are located at least in the abdomen area and the back area in the width direction than the inner side end edges in the width direction of the base portion. Since it is placed in the absorption main body on the outer side, even when the user sleeps in a prone state (that is, when the excretion fluid discharged from the user is easy to flow toward the abdomen side in the longitudinal direction), etc., The liquid flow control unit disposed in the abdominal region can also prevent side leakage of the excretion fluid in the abdominal region, and can leak from the abdominal side in the longitudinal direction. Also difficult. [Effect of the invention]

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

Hereinafter, preferred embodiments of the absorbent article of the present invention will be described in detail with reference to the drawings. In addition, in this specification, unless otherwise stated, "for an object (for example, an absorbent article, an absorbent body, etc.) placed on a horizontal surface in the unfolded state, from the vertical upper side (the object is absorbent) In the case of an article, it is on the surface sheet side.) When looking at the thickness direction of the object, it is only called "viewing from the top." Here, the "expanded state" means a state where an object placed on a horizontal plane is extended along a horizontal plane, and further, the extended state is released from the extended state (for example, the object is caused by an elastic member). Such as a state of contraction to a certain degree, etc.), is called a "natural state".

The various directions and the like used in this specification are as follows unless otherwise stated. In this specification, the "length direction" means "the direction in which the length of a vertically long object (such as an absorbent article, an absorbent body portion, an absorbent body, etc.) is long when viewed from above", and "the width direction" is It refers to "a direction in which the length of an elongated object in a plan view is short (width direction)", and "thickness direction" means "a vertical direction with respect to an object placed on a horizontal plane in an expanded state", these The length direction, width direction, and thickness direction of each are perpendicular to each other. In this specification, the longitudinal direction, the width direction, and the thickness direction of the absorbent article refer to the longitudinal direction, the width direction, and the thickness direction of the absorbent body portion constituting the absorbent article, respectively. Further, in the present specification, "the lengthwise direction of an elongated object, which is located at the center of the longitudinal direction of the object and is relatively near to the longitudinal center axis C _W extending in the width direction," is referred to as " The "inner side in the longitudinal direction" refers to "the relatively far side of the longitudinal axis C _W in the longitudinal direction of the longitudinal object" as the "outer side in the longitudinal direction". Similarly, "in the width direction of an elongated object, which is located at the center in the width direction of the object and is relatively near to the width direction central axis C _L extending in the length direction" is referred to as "inward in the width direction" The “side side” refers to “the relatively far side with respect to the widthwise central axis C _L in the width direction of the longitudinal object” as the “outer side in the width direction”. In this specification, the "area corresponding to the abdomen of the user when the absorbent article is worn in the longitudinal direction of the absorbent article or the absorbent body portion" is referred to as the "abdominal area", and the "in the absorbent article or It is the length direction of the absorbent body part, and the area corresponding to the user's back to hips when the absorbent article is worn "is called" back area ", and" the length direction of the absorbent article or the absorbent body part is located in the abdomen " The field between the field and the back region mentioned above corresponds to the region of the interstitial region of the user when the absorbent article is worn, and is referred to as the "interstitial region". Here, "when wearing" means that the state is maintained for a period of time (wearing period) from the time when the user wears the absorbent article (that is, the point at which the useable state is formed). Further, in this specification, unless otherwise stated, in the thickness direction of the absorbent article or the absorbent body portion, "when the absorbent article is worn, the user's skin surface is relatively near the side" is referred to as " The "skin-facing side" refers to the "non-skin-facing side" as "the skin-facing side is relatively far away from the user when the absorbent article is worn". In addition, in this specification, the "skin-facing surface" and "non-skin-facing surface side" and "non-skin facing surface side" of an absorbent article and various constituent members (for example, an absorbent body portion, a top sheet, an absorbent body, a back sheet, and a side sheet). There are also "surfaces" and "non-skin opposites".

FIG. 1 is a plan view of the urine absorbent pad 1 in an unfolded state according to an embodiment of the present invention, and FIGS. 2 to 6 are respectively II-II of the urine absorbent pad 1 along the first figure. FIG. 7 is an end view in a natural state of a cross section taken along line VI-VI, and FIG. 7 is a perspective view of the urine absorbing pad 1. As shown in FIG. 1, a urine absorbing pad 1 (an example of an absorbent article of the present invention) according to an embodiment of the present invention has a vertically long shape having a length direction L and a width direction W when viewed from above. Specifically, the shape has a shape substantially like a sand-clock-shaped outer shape that is narrowed toward the inner side of the width direction W in the substantially central portion of the length direction L (that is, the portion corresponding to the inter-strand region A _C ). Moreover, in the present invention, the shape of the outer shape of the absorbent article is not limited to this aspect, and if the length dimension in the longitudinal direction L is longer than the width dimension in the width direction W, it can be adopted for various applications and the like. Arbitrary vertical shape (such as rectangular, oval, gourd, etc.).

As shown in FIGS. 1 and 2, the urine absorbing pad 1 of this embodiment is composed of an absorber main body 2 including an absorber 21 having a length direction L corresponding to the urine absorbing pad 1, Each of the width direction W and the thickness direction T in each of the length direction, the width direction, and the thickness direction, and having the abdomen area A _{F , the} interfemoral area area A _C, and the back area A _B in the aforementioned length direction; and the width direction W in the absorption body portion 2 A pair of side sheets 4, 4 (leak-proof wall portions) are formed at both end portions of the pair and extend continuously across both end portions in the longitudinal direction L.

As shown in FIGS. 1 to 6, the absorbent body portion 2 includes a liquid-permeable surface sheet 22 on the skin-opposing surface side and a liquid-impermeable surface on the skin-opposing surface side in the thickness direction T. Back sheet 23 and two absorbent layers (specifically, the first absorbent layer 21A located on the opposite side of the opposite skin and the non-absorptive layer 21A located between the sheets) The absorbent body 21 of the second absorbent layer 21B) on the opposite side of the skin can be absorbed and held by the above-mentioned absorbent body 21 while permeating fluid such as urine discharged from the user in the thickness direction T.

On the other hand, as shown in FIGS. 1 to 6, the pair of side sheets 4 and 4 (leak-proof wall portions) are on the skin-opposing surface side of the absorption body portion 2 (more specifically, the surface sheet 22). The opposite side of the skin) faces the absorption body portion 2 and is located at both ends in the width direction W of the absorption body portion 2 and spans both ends of the aforementioned length direction L (that is, the abdominal region in the length direction L). The side end portion and the back region side end portion) are arranged so as to extend continuously. Further, the pair of side sheets 4 and 4 are respectively located on the inner side of the width direction W of the absorption body portion 2 and are not joined to the absorption. The free end portion of the surface on the skin-opposing surface side of the main body portion 2 and the fixed end portion of the surface on the skin-opposing surface side of the absorption main body portion 2 located on the outer side in the width direction W of the absorption main body portion 2. Such a pair of side sheets 4 and 4 are, respectively, the end edges of the free end, that is, the inner side of the width direction W (that is, the inner side end edges of the width direction W) when the urine absorbing pad 1 is worn. ) Is a pair of leak-proof wall portions that stand up toward the opposite side of the skin and can form a leak-proof wall that functions as a leak-proof wall that prevents side leakage of excretory fluid such as urine discharged from the user.

The pair of side sheets 4 and 4 are, as shown in FIG. 1, the pair of side sheets 4 and 4 and the urine absorbing pad 1 near the inner side end edge in the width direction W. The five (plural) elastic members EL that contract in the longitudinal direction L and promote the inner side edge of each of the pair of side sheets 4 and 4 in the width direction W are arranged along the longitudinal direction L.

Furthermore, in the urine absorbing pad 1 of this embodiment, the leak-proof wall portion formed by the pair of side sheets 4 and 4 respectively has, as shown in Figs. 2 is opposite to and fixed to the base portion 41 of the absorption body portion 2 and the skin-opposing surface side of the base portion 41 is connected to the inner side end edge in the width direction W of the base portion 41 and faces toward the skin when wearing The first wall portion 42 which stands on the surface side (more specifically, the portion on the inner side in the longitudinal direction L stands on the opposite side of the skin), and the skin opposite surface side of the first wall portion 42 is connected to the first wall portion 42. The outer side end edges in the width direction W of the first wall portion 42 are connected and rise toward the skin-opposing surface side when worn (more specifically, the portion on the inner side of the length direction L is standing toward the skin-opposing surface side). The second wall portion 43), and in the abdomen area A _F and the back area A _B , the edge portion includes the edge of the longitudinal direction L of the side sheet 4 and has a predetermined length in the longitudinal direction and a predetermined width. The lengthwise configuration of the rising structure of the first wall portion 42 and the second wall portion 43 is controlled so that the Drain fluid flow in the width direction W and the thickness direction T to control liquid flow control unit F _C. Further, as shown in FIG. 5, this liquid flow control portion F _C includes: joining the base portion 41 and the first wall portion 42 (more specifically, each longitudinal direction L of the base portion 41 and the first wall portion 42) And the first wall portion 42 and the second wall portion 43 are joined (more specifically, the first wall portion 42 And the outer wall portions of the second wall portion 43 in each of the length directions L are joined) and the length of the inner side end edge in the width direction W is equal to or greater than the length of the first joint portion 44 in the width direction W The second joint portion 45 having a length in the longitudinal direction of the outer-side end edge in the middle. In the pair of leak-proof wall portions, the portion located on the inner side in the longitudinal direction L than the liquid flow control portion F _C (in the above-mentioned embodiment, the liquid flow control portion F _C in the abdominal area A _F and The leak-proof wall portion between the liquid flow control portion F _C in the back area A _B ) is a structure that does not have a structure that is controlled by the liquid flow control portion F _C (a structure that controls the flow of excretion liquid in a specific direction), but is formed (see FIG. 2) has the same structure as and functions of the leakage preventing wall is typically raised to the non-control unit S _P.

The absorbent body 21 is, as shown in FIG. 1, viewed from a plan view, the back region side end edge 21E ₁ in the longitudinal direction L of the absorbent body 21 is an inner side than the second joint portion 45 in the width direction W. Among the end edges, the inner side end portion 45E _i located on the innermost side in the length direction L is more on the outer side in the length direction L, and both end edges in the width direction W of the absorber 21 (that is, in the width direction W) One side end edge 21E ₃ and the other side end edge 21E ₄ ) are arranged on the outer side of the width direction W on the outer side in the width direction W than the inner side edge in the width direction W of the back area A _B base 41. Inside the department 2.

In the urine absorbing pad 1 of the present embodiment, the absorbent body 21 is, as shown in FIG. 1, viewed from a plan view, the end edge 21E ₂ of the abdominal region in the longitudinal direction L of the absorbent body 21 is located at a ratio of the inner side of the inner end portion in the side end edge of the second engagement portion 45 in the width direction W arranged in the abdomen of the art a _F liquid flow control unit F _C L is located in the most inner side of the longitudinal direction of 45E _i The outer side of the lengthwise direction L, and both end edges in the width direction W of the absorbent body 21 (that is, one side end edge 21E ₃ and the other side end edge 21E ₄ in the width direction W) are in the abdominal area A _F is located on the outer side in the width direction W than the inner side end edge in the width direction W of the base portion 41 and is disposed in the absorption body portion 2.

The urine absorbing pad 1 of this embodiment is particularly provided with a pair of leak-proof wall portions having the above-mentioned base portion 41, first wall portion 42 and second wall portion 43 at least in the back area A _B and has fluid flow control unit F _C, comprising: 42 to engage the second wall portion of the base 41 and having a first predetermined longitudinal length of the engagement portion 44; 43 and the engaging portion and the width of the first wall 42 and second wall portion The length in the longitudinal direction of the inner side end edge in the direction W is equal to or greater than the length of the first joint portion 44 and the length of the outer side end edge in the width direction W is less than the second joint portion 45; The above-mentioned absorbent body 21 is viewed from a plan view, and the back region side end edge 21E ₁ in the longitudinal direction L of the absorbent body 21 is located in the inner side end edge of the second joint portion 45 in the width direction W. The inner-side end portion 45E _i on the innermost side in the longitudinal direction is more on the outer-side side in the longitudinal direction L so that both end edges in the width direction W of the absorbent body 21 are located at least in the back area A _B than the base portion 41 The inner side end edge in the width direction W is arranged in the absorption main body portion 2 more outwardly in the width direction W. Structure, the liquid flow control unit F _C can be formed to have a sufficient standing height by the first wall portion 42 and the second wall portion 43 as shown in FIG. The discharged excrement has a specific standing structure with sufficient durability. As a result, the urine absorbing pad 1 is an excretion liquid which is discharged from the user and flows on the surface of the skin-opposing surface side of the absorption body portion 2 toward the outer side in the longitudinal direction L and the width direction W, and is formed in the the specific structure and the rising portion of the absorbent body cavity F _S 2 between the surface of the skin while the opposite side of the sealed fluid side intercept the flow control described above in section F _C, can be absorbed through the surface of the body portion 2 of the sheet 22 It can absorb to the absorbent body 21 in the absorption main body part 2 and can induce the excretion fluid flowing toward the outer side in the longitudinal direction L, while inducing the excretion fluid toward the inner side in the width direction W by the liquid flow control unit F _C described above. The surface sheet 22 that has passed through the absorption body portion 2 absorbs toward the absorber 21 in the absorption body portion 2. As a result, the urine absorbing pad 1 can reliably prevent side leakage of the excretion fluid, and it is also difficult to leak from the back side in the longitudinal direction L.

Furthermore, in the urine absorbing pad 1 of this embodiment, not only the back area A _B but also the abdomen area A _F are disposed in each of the liquid flow control portions F _{C of the} pair of leak-proof wall portions, and the absorber The abdominal region side end edge 21E ₂ in the longitudinal direction 21 of 21 is located on the inner side end edge in the width direction W of the second joint portion of the liquid flow control portion F _C disposed in the abdominal region A _F. The inner side end portion 45E _i located on the innermost side in the length direction L is further on the outer side in the length direction L, and both end edges in the width direction W of the absorbent body 21 (that is, one side end edge in the width direction W) 21E ₃ and the other side end edge 21E ₄ ) are located in the absorptive body portion in the abdomen area A _F also located on the outer side in the width direction W than the inner side end edge in the width direction W of the base portion 41 It can be placed on the abdomen even when the user is sleeping in a prone state (ie, when the excretion fluid discharged from the user is easy to flow in the direction of the abdomen side of the length direction L). fIELD a _F liquid flow control unit F _C, and the abdomen side of the liquid waste leakage in the art a _F surely Stop, and the longitudinal direction L from the ventral side leakage is also difficult.

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

<Absorbing body part> In the urine absorbing pad 1 according to an embodiment of the present invention, as shown in FIG. 1, the absorption body part 2 has a longitudinal direction L corresponding to the urine absorbing pad 1 when viewed from above. , The width direction W, and the thickness direction T of each of the length direction, the width direction, and the thickness direction, and has a shape that becomes the longitudinal shape of the urine absorbing pad 1 when viewed from the top (that is, the interstrand region A corresponding to the length direction L) The part _C is a shape approximated to a sand-clock-shaped outer shape that narrows toward the inner side in the width direction W). Moreover, in the present invention, the shape of the outer shape of the absorbing body portion is not limited to that of this embodiment, and if the length dimension in the longitudinal direction is a long shape longer than the width dimension in the width direction, it can be used for various purposes, etc. Use any shape (such as rectangle, oval, gourd, etc.). Moreover, in the present invention, various sizes such as the length in the longitudinal direction, the length in the width direction, and the length in the thickness direction (thickness) of the absorbent body portion have predetermined absorbency and flexibility as the absorbent body portion, and are shaped toward the body of the user. There are no particular restrictions on the suitability, etc., and any size can be adopted according to the size and gender of the wearer, the absorption target, the use, and the like.

In the above-mentioned embodiment, as shown in FIG. 1 to FIG. 6, the main body of the absorption body portion 2 in the thickness direction T includes a liquid-permeable surface sheet 22 on the skin-opposing surface side, and The liquid-impermeable back sheet 23 on the non-skin facing side, and the two-layer absorption layer (i.e., the first absorption layer 21A and the first 2 absorbent layer 21B), and in this embodiment, a liquid-impermeable lining film is provided on the skin-opposing surface side of the back sheet 23 (that is, between the absorber 21 and the back sheet 23). twenty four.

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

[Surface Sheet] In the above-mentioned embodiment, the surface sheet 22 disposed on the skin-opposing surface side of the absorption main body portion 2 is as shown in FIG. 1 and FIG. The abdomen-area-side end of the longitudinal direction L in 2 extends across the back-area-side end, and spans from the vicinity of one side end edge 21E ₃ of the absorbent body 21 in the width direction W of the absorber body 2. The side edge 21E ₄ extends in the vicinity of the side, and has a shape of a substantially rectangular outer shape that is vertically long as a whole in the longitudinal direction L. Further, in the absorbent article of the present invention, the size and shape of the surface sheet are such that most of the surface on the skin-opposing surface side of the absorbent body (for example, a portion exceeding 50% of the surface area on the skin-opposing surface side of the absorbent body) Etc.) Covering is not particularly limited, and any size and shape can be adopted for various applications and the like.

In the above-mentioned embodiment, the surface sheet 22 is disposed on the skin-opposing surface that can directly contact the skin surface of the user in the thickness direction T of the absorption body portion 2 as shown in FIGS. 1 to 6. On the other hand, it can be constituted by a liquid-permeable sheet in which excretion fluid such as urine discharged from a user is rapidly moved toward the absorber 21 disposed on the non-skin-opposing surface side of the surface sheet 22.

In the present invention, the liquid-permeable sheet that can be used as the surface sheet is not particularly limited as long as it has various characteristics (such as liquid permeability and muscle feel, softness, strength, etc.) that can be used as the surface sheet of an absorbent article. For example, it can be optimally used: non-woven fabrics such as breathable nonwoven fabrics, spunbond nonwoven fabrics, point-bonded nonwoven fabrics, and fiber-based sheets such as woven fabrics, and opening films in which a plurality of openings are applied to a resin film. The above-mentioned fibrous sheet may be subjected to a hydrophilization treatment with a surfactant. Among such liquid-permeable sheets, it is preferable to use a fiber-based sheet from the viewpoint of excellent liquid-permeability, flexibility, and strength, and it is more preferable to use a nonwoven fabric such as a breathable nonwoven fabric and a spunbond nonwoven fabric.

In addition, when the above-mentioned fiber-based sheet is used as the surface sheet, the constituent fibers are not particularly limited. For example, olefin-based resins such as polyethylene and polypropylene; polyethylene terephthalate and polylactic acid can be used. A resin fiber composed of a thermoplastic resin such as a polyester-based resin, these resins may be used alone from one type of resin, or two or more types of resins may be used in combination. The structure of the resin fibers is not particularly limited, and for example, composite fibers such as core-sheath fibers, special cross-section fibers, and three-dimensional crimped fibers may be used.

Further, the resin fiber may be, for example, a hydrophilization treatment such as a treatment using a surfactant and a hydrophilizing agent (such as mixing a surfactant into the inside of the fiber or applying a surfactant to the surface of the fiber), and Any additives such as a deodorant and an antibacterial agent may be included. These additives may be used alone or in combination of two or more kinds of additives.

In the present invention, the basis weight of the liquid-permeable sheet that can be used as the surface sheet is not particularly limited as long as it has predetermined liquid-permeability, flexibility, and strength, for example, in the range of 5 g / m ² to 100 g / m ² It is preferably in a range of 10 g / m ² to 50 g / m ² . The thickness of the liquid-permeable sheet is not particularly limited as long as the liquid-permeable sheet can function as a surface sheet of an absorbent article, and any thickness may be adopted in accordance with the desired liquid-permeability, flexibility, strength, and the like.

The structure of the liquid-permeable sheet that can be used as a surface sheet is not particularly limited as long as it has predetermined liquid-permeability, flexibility, and strength. For example, it can be optimally used: those who have a nearly flat structure and are on the opposite side of the skin The surface has an uneven structure.

[Back Sheet] In the above-mentioned embodiment, the back sheet 23 disposed on the non-skin-facing side of the absorption body portion 2 is, as shown in Figs. 1 and 2, and has: The abdomen region side end portion in the length direction L in the portion 2 extends across the back region side end portion, and extends from one side end portion in the width direction W of the absorption body portion 2 across the other side end portion, as a whole. The shape that absorbs the same long outer shape of the main body portion 2 (that is, the portion corresponding to the interstrand region A _C in the longitudinal direction L is an approximately sand-clock-shaped outer shape that narrows toward the inner side in the width direction W). 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 surface on the non-skin facing side of the absorbent body, and any size and shape can be adopted for various applications and the like. .

Further, in the above-mentioned embodiment, the back sheet 23 is discharged from the user from the non-skin facing surface side arranged in the thickness direction T of the absorption body portion 2 as shown in FIGS. 1 to 6. A functional liquid-impermeable sheet that does not leak fecal fluid such as urine to the outside.

In the present invention, the liquid-impermeable sheet that can be used as a back sheet has various characteristics that can be used as a back sheet of an absorbent article (for example, liquid impermeability, flexibility, strength, and preferably air permeability). It is not particularly limited, for example, resin films such as polyethylene and polypropylene can be optimally used; a nonwoven body is laminated with a resin film; a nonwoven fabric such as a hydrophobic nonwoven fabric and a laminated nonwoven fabric (for example, SMS nonwoven fabric). When the above-mentioned nonwoven fabric is used as the back sheet, the type of the nonwoven fabric is not particularly limited, and for example, any nonwoven fabric such as a spunbond nonwoven fabric, a point-bonded nonwoven fabric, a meltblown nonwoven fabric, and an SMS nonwoven fabric can be used. Furthermore, the constituent fibers of such a non-woven fabric are not particularly limited. For example, thermoplastic resins such as polyolefin resins such as polyethylene and polypropylene; polyester resins such as polyethylene terephthalate; and the like can be used. The resin fibers may be composed of one type of resins alone, or two or more types of resins may be used in combination. The structure of the resin fibers is not particularly limited, and for example, various composite fibers such as core-sheath fibers may be used.

In the present invention, the basis weight of the liquid-impermeable sheet (such as a non-woven fabric) that can be used as the back sheet is not particularly limited as long as it has a predetermined liquid-impermeable (leak-proof) property and strength, for example, 5 g / m ^{It is} in the range of ² to 100 g / m ² , and preferably in the range of 10 g / m ² to 50 g / 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 an absorbent article, and can correspond to the desired liquid-impermeable and softness, strength, and air permeability. Use any thickness.

And in the above-mentioned embodiment, as shown in FIG. 2 to FIG. 6, on the skin-opposing surface side of the back sheet 23 (that is, between the absorbent body 21 and the back sheet 23), the surface sheet 23 and the back sheet 23 are arranged. The liquid-impermeable backing film 24 having approximately the same size and shape. Such a backing film 24 is made of a thermoplastic resin film such as polyethylene, and similar to the back sheet 23, it prevents the passing of excretion liquid such as urine discharged from the user, so that the excretion liquid does not face the user. Dressed for waiting for the leaked functional person. In addition, if the absorbent article is provided with such a lining film, leakage of excretion liquid such as urine can be more effectively suppressed. However, this lining film is not an essential constituent element in the absorbent article of the present invention. The absorbent article of the invention may not include such a backing film.

[Absorbent Body] In the above embodiment, the absorbent body 21 has, as shown in FIG. 1, the abdomen area A _F (more specifically, Near the abdomen region side end portion in the length direction L) extends across the back region A _B (more specifically, near the back region side end portion in the length direction L) and extends from the width direction in the width direction W of the absorption body portion 2 The first area A _W1 (more specifically, near one end portion in the width direction W) extends across the width direction. The second area A _W2 (more specifically, near the other end portion in the width direction W) extends as a whole. The portion of the interstrand region A _C that is long in the longitudinal direction L and corresponds to the longitudinal direction L is a shape that approximates a sand-clock-shaped outer shape that narrows slightly toward the inner side of the width direction W. Further, in the absorbent article of the present invention, the size and shape of the absorbent body are not limited to those in this embodiment, and at least the length dimension in the longitudinal direction spans the abdomen area from the abdomen area in the longitudinal direction of the absorbent body portion. If the shape is long, the shape can be any length (for example, rectangular, oval, gourd, etc.) according to various applications.

In the embodiment described above, the absorbent body 21 is disposed between the top sheet 22 and the back sheet 23 in the thickness direction T of the absorber main body 2 as shown in FIGS. 1 to 6 (more specifically, Between the surface sheet 22 and the lining film 24), a two-layer absorbent layer (i.e., the first absorbent layer 21A and the second absorbent layer) that functions to absorb and retain the excretion fluid of the user such as urine passing through the surface sheet 22 21B).

These two absorbent layers are a first absorbent layer 21A disposed relatively on the skin-opposite surface side and a second absorbent layer 21B disposed relatively on the skin-opposite surface side within the absorbent body portion 2, It is joined by arbitrary joining means (not shown), such as a thermal fusion-type adhesive, and it is set as the integrated body and the said absorber 21 was comprised. Among the two absorbent layers constituting the absorbent body 21, the first absorbent layer 21A has an abdominal area A _F (more specifically, a longitudinal direction) in the longitudinal direction L of the absorbent body portion 2 when viewed from above. Near the belly-side end of L) extends across the back area A _B (more specifically, near the back-side end in the length direction L) and absorbs from the width direction first area A of the width direction W of the absorption body portion 2 _W1 (more specifically, near the one side end portion in the width direction W) extends across the widthwise second area A _W2 (more specifically, near the other side end portion in the width direction W), and the whole is in the length direction L The long portion corresponding to the inter-strand region A _C in the longitudinal direction L is composed of an absorbent member having a shape similar to a sand-clock-shaped outer shape and narrowing toward the inner side in the width direction W. In this embodiment, the first absorbing layer 21A has a shape that forms the outer shape of the absorbing body 21 when viewed from above.

On the other hand, the second absorbent layer 21B is composed of "having, from a plan view, the abdomen area A _F in the longitudinal direction L of the absorbent main body portion 2 (more specifically, near the abdomen side end portion in the longitudinal direction L)" Extenders that extend across the back area A _B (more specifically, near the back-side end in the length direction L), and in the width direction W, both ends of the width direction W are located at positions that are greater than those of the first absorption layer 21A. Both end edges in the width direction W (that is, one side end edge 21E ₃ and the other side end edge 21E _{4 in the} width direction W) extend further inward in the width direction W, and the entire shape is approximately rectangular in length in the length direction L. The shape of the outer shape "is composed of an absorbent member. By forming the second absorbing layer 21B disposed on the opposite non-skin facing surface side here, it is difficult for the user to perceive a step difference in the edge portion of the width direction W of the first absorbing layer 21A and the second absorbing layer 21B. .

In the present invention, the absorbent member that can be used as the first absorbent layer and the second absorbent layer constituting the above-mentioned absorbent body is not particularly limited as long as it can absorb and retain excretory fluid such as urine, and it can be used as known in the art. Arbitrary absorbent member. Such an absorbent member can be, for example, an absorbent core made of an arbitrary absorbent material, a core wrap sheet such as a tissue paper having hydrophilicity, or the like. Further, the absorbent material constituting the above-mentioned absorbent core can be used, for example, hydrophilic fibers, superabsorbent copolymers, and the like, and more specifically, cellulose, such as pulverized pulp, cotton, rayon, and acetate, can be used. Fibers; granular materials made of superabsorbent copolymers such as sodium acrylate copolymers. These absorbent materials may be used alone or in combination of two or more types of absorbent materials. The first absorption layer and the second absorption layer may use the same absorbent member or different absorbent members.

Moreover, in the above-mentioned embodiment, as shown in FIG. 1 and FIG. 6, the first absorption layer 21A is provided with a central portion (that is, a lengthwise direction) at least in the width direction W of the inter-strand region A _C when viewed from a plan view. The portion where the central axis C _L in the width direction extending in the direction _L overlaps), the through hole 21A _S penetrating the first absorption layer 21A in the thickness direction T, and further, the second absorption layer 21B is located between the strands as shown in FIG. 1. The central portion in the width direction W of the partial area A _C overlaps the through-hole 21A _{S of the} first absorbing layer 21A in the thickness direction T, and has a smaller size and shape than the through-hole 21A _{S in} plan view and includes a second The through hole 21B _{S which} penetrates the absorption layer 21B in the thickness direction T. These through-holes 21A _S and 21B _S are formed as through-holes that communicate in the thickness direction T, penetrate the entire absorbent body 21 in the thickness direction T, and gradually change the opening area in the thickness direction T. If the absorber is provided with such a through hole, absorption of the excretory fluid in the thickness direction T can be promoted, so that it can exhibit more excellent absorption performance (especially, absorption speed).

In the absorbent article of the present invention, it is not necessary that the absorbent body is composed of the two-layered absorbent layer as in the above embodiment, and the absorbent body is composed of an absorbent member having a single-layer structure, or An absorbent member having a multilayer structure of three or more layers may be used. The basis weight and thickness of the absorbent member that can be used as the absorbent layer constituting the absorbent body are characteristics of the absorbent member that can function as an absorbent body of an absorbent article (such as absorbency, flexibility, etc.). It is particularly limited, and an arbitrary basis weight and thickness can be used.

Further, in the above-mentioned embodiment, the absorbent body 21 has the two end edges in the width direction W (that is, one side end edge 21E ₃ and the other side end edge 21E of the width direction W in the interstrand area A _C ). ₄ ) It has an outer shape that is partially contracted toward the inner side of the width direction W, and is located partially on the inner side of the width direction W than the inner side end edge of the base portion 41 of the pair of leak-proof wall portions. shape. If the absorbent body 21 has such an external shape, in the inter-strand area A _C , since the influence of the rigidity caused by the absorbent body 21 is small, the degree of freedom of deformation and movement of the pair of leak-proof wall portions is increased. Therefore, when the user wears the urine absorbing pad 1, the pair of leak-proof wall portions can be closely adhered while following the shape of the user's body (the shape of the intertrochanteric portion). Therefore, the urine absorbing pad 1 provided with the absorber 21 having such an external shape can more reliably form a gap between the user's body (inter-strand portion) and a pair of leak-proof wall portions, so that it can be more reliably Prevent side leakage of fecal fluid.

Furthermore, in the above-mentioned embodiment, the absorbent body 21 has the two ends (i.e., one side end of the width direction W) of the absorbent body 21 in the width direction W in the abdominal area A _F and the back area A _B. The edge 21E ₃ and the other side end edge 21E ₄ ) are located partially on the outer side of the width direction W than the outer side edge of the widthwise direction W of each of the second joint portions 45 of the pair of leak-proof wall portions. Configuration. If the absorbent body 21 is so arranged, even when the user sleeps in the horizontal direction (that is, the excretion liquid discharged from the user is likely to be directed toward the direction of gravity (more specifically, it is directed toward the outside of the width direction W of the absorbent body portion 2). In the case of flow in the side direction), the excretion fluid flowing toward the outer side in the width direction W can be reliably absorbed by the absorber 21, and the side leakage of the excretion fluid can be prevented more reliably.

In the absorbent article of the present invention, each of the liquid flow control sections of the pair of leak-proof wall sections may be disposed at least in the back area. However, in the urine absorbing pad 1 of the above embodiment, The liquid flow control unit F _C is disposed in the abdominal area A _F and the back area A _B , respectively. Further, the absorbent body 21 is shown in FIG. The abdominal-area-side end edge 21E ₂ is located at the innermost side of the longitudinal direction L among the inner-side end edges in the width direction W of the second joint portion 45 of the liquid flow control portion F _C disposed in the abdominal area A _F. The inner side end portion 45E _{i on the} side is more on the outer side in the length direction L so that both end edges in the width direction W of the absorbent body 21 (that is, one side end edge 21E _{3 in the} width direction W and the other The side end edges 21E ₄ ) are arranged in the absorptive body portion 2 in the abdominal region A _F on the outer side in the width direction W than the inner side end edges in the width direction W of the base portion 41. If the absorbent body 21 is so arranged, even when the user sleeps in the prone state (that is, the excretion fluid discharged from the user is easily directed toward the direction of gravity (more specifically, toward the width direction W of the absorbent body portion 2) In the case of a flow in the outer direction), the liquid flow control unit F _C disposed in the abdominal region A _F described above can also reliably prevent side leakage of the excretion fluid in the abdominal region A _F , and Leakage from the abdominal side in the longitudinal direction L is also difficult.

[Embossing Section] In the above-mentioned embodiment, the absorbing main body section 2 has a width direction first area A _W1 and a width, which are respectively arranged in the width direction central axis C _L extending in the length direction L. A pair of embossed portions 3, 3 facing the second area A _W2 and recessed from the opposite side of the skin in the thickness direction T. Such a pair of embossed portions 3 and 3 each have a linear shape in plan view extending in the longitudinal direction L in the interstrand region A _C as shown in FIG. 1, and further, in the absorption body portion 2 In the thickness direction T, the surface sheet 22 and the absorber 21 are pressed and integrated by being recessed from the opposite side of the skin. In addition, such an embossed portion can be formed by pressing the absorbent body portion from the opposite side of the skin in the thickness direction T, using any embossing processing means, whether heated or non-heated.

Furthermore, in this embodiment, the pair of embossed portions 3 and 3 are the width in length from the embossed portion 3 to the inner side edge in the width direction W of the base portion 41, and the length of the first wall portion 42 The total length of the widthwise length and the widthwise length of the second wall portion 43 is longer than the widthwise central axis C _L to the embossed portion 3 (specifically, the widthwise center line of the embossed portion 3). ) Is arranged longer in the width direction. If the pair of embossed portions 3 and 3 are arranged in this way, the pair of embossed portions 3 and 3 become the starting point of the meandering, and the widthwise central portion extending along the widthwise central axis C _L of the absorption body portion 2 faces The protruding side of the skin on the opposite side (that is, the cross-sectional shape along the central axis C _W in the longitudinal direction is approximately W-shaped) makes the absorbent body portion 2 easily deformed, and the height of the pair of leak-proof wall portions described above is easy. The protruding height is higher than the widthwise central portion protruding toward the skin opposite surface side, so the skin opposite surface in the widthwise central portion of the absorbent body portion 2 can be in close contact with or close to the intertrochanter portion of the user, and can be used from The discharged excretion liquid is easily absorbed by the absorbent body 21, and side leakage of the excretion liquid can be prevented more reliably.

In addition, this effect is that if the pair of embossed portions can become the starting point of the meandering of the absorption body portion, it can be achieved in the same manner even in the aspects other than the above-mentioned embodiment. Therefore, in the present invention, The flower portion is an embodiment as described above, and it is not necessary to integrally form the surface sheet and the absorbent body. For example, only the absorbent body may be formed.

Moreover, in the present invention, the shape of the embossed portion in a plan view is not particularly limited, and any shape such as a wavy shape, a wavy shape, a curved shape, or a zigzag shape may be used in addition to the linear shape of the embodiment described above. Moreover, since such an embossed part is not an essential component in the absorbent article of the present invention, the absorbent article of the present invention may be provided without such an embossed part.

<Leak-proof wall part> In the urine absorbing pad 1 of the above-mentioned embodiment, a pair of leak-proof wall parts are located at both ends of the width direction W of the absorbent body part 2 and span the length direction L. A pair of side sheets 4 and 4 extending continuously at both end portions are formed. In addition, in such a pair of side sheets 4, 4 are arranged near the inner side end edges in the width direction W, respectively, and 5 are provided to shrink the pair of side sheets 4, 4 in the longitudinal direction L. Elastic member EL of the strip.

Hereinafter, various structural members 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 of the above-mentioned embodiment.

[Side Sheet] In the above-mentioned embodiment, the pair of side sheets 4 and 4 are absorbed by the skin-opposing surface side of the absorption body portion 2 (more specifically, the skin-opposing surface side of the surface sheet 22). It is arranged at both ends in the width direction W of the absorbent body portion 2 and when the urine absorbing pad 1 is worn, the inner side edge in the width direction W can stand as a leak-proof wall, and is long in the length direction L. A pair of strip-shaped liquid-impermeable sheets are formed.

In the present invention, the belt-like 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 property and muscle feel, softness, strength ( In particular, the strength when wet), etc.) is not particularly limited. For example, hydrophobic nonwoven fabrics (such as spunbond nonwovens, point-bonded nonwovens, and SMS nonwovens that are hydrophobic or rendered hydrophobic) can be used; they have liquid impermeability. Synthetic resin film; laminated body of these, etc.

The shape, basis weight, and thickness of the band-shaped liquid-impermeable sheet that can be used as a side sheet are not particularly limited as long as they do not hinder the effects of the present invention, and can correspond to the desired liquid-impermeable and muscle texture. The shape, basis weight, thickness, and the like of an arbitrary external shape are used for feeling, flexibility, and the like.

In the above-mentioned embodiment, a pair of side sheets 4 and 4 may be formed respectively: when the urine absorbing pad 1 is worn, the free end portion, that is, the inner side end edge of the width direction W is standing toward the opposite side of the skin A pair of leak-preventing wall portions functioning as a leak-preventing wall that prevents side leakage of excretory fluid such as urine discharged from a user. The pair of leak-proof wall portions respectively include the base portion 41 facing the absorption body portion 2 and fixed to the absorption body portion 2 as described above, and the skin-opposing surface side of the base portion 41 and the base portion 41 The inner-side end edge in the width direction W is connected, and the inner-side portion of the length direction L when worn is a first wall portion 42 standing up toward the skin-opposing surface side, and a skin facing the first wall portion 42. The surface side is connected to the outer side end edge of the first wall portion 42 in the width direction W, and the second wall portion 43 standing up from the inner side portion in the length direction L toward the opposite side of the skin when worn, further In the abdomen area A _F and the back area A _B , the above-mentioned liquid flow control unit F _C including the edge in the longitudinal direction L of the side sheet 4 and having a predetermined longitudinal direction length and a predetermined width direction length is provided, L and positioned than the liquid flow control unit F _C more longitudinal direction of the inner side portion, a control unit is provided with a non-rising S _P have the same structure and functions of the conventional leakage preventing wall.

As described above, the liquid flow control portion F _C includes the first joining portion 44 having a predetermined length in the longitudinal direction by joining portions on the outer side in each longitudinal direction L of the base portion 41 and the first wall portion 42; and The outer side portions of each of the first wall portion 42 and the second wall portion 43 in the longitudinal direction L are joined, and the length of the inner side end edge in the width direction W is the length of the first joint portion 44 in the longitudinal direction. As described above, the second joint portion 45 whose length in the longitudinal direction is less than the length of the outer side end edge in the width direction W; the rising structure of the first wall portion 42 and the second wall portion 43 described above can be controlled from the user F _S to the cavity between the surface of the liquid waste is discharged, is formed in the enclosed absorbent body structure and the raised section of the liquid flow control unit F _C 2 opposing skin side of the intercept, and the longitudinal direction L toward the outer The excretory fluid flowing sideways is induced to the inner side in the width direction W.

The pair of side sheets 4 and 4 are bonded to the absorber 21 (more specifically, the first absorbent layer 21A) on the outer side in the width direction W than the liquid flow control section Fc, and further, The joints (hereinafter, also referred to as "third joints") are arranged in the width direction W at both ends of the absorber 21 in the width direction W (that is, in the width direction W of the absorber 21). One of the side edge 21E ₃ and the other side edge 21E ₄ ) is a position in which the thickness direction T is repeated or a position on the inner side in the width direction W that is greater than the end edges. The joint portion of the pair of side sheets 4, 4 and the absorber 21 is also the third joint portion. When the pair of side sheets 4, 4 stand on the opposite side of the skin to form a leak-proof wall, the leak-proof wall becomes the leak-proof wall. And the third joint is disposed in the widthwise direction W of the absorbent body 21 as described above. The position where the both end edges overlap in the thickness direction T or the position on the inner side of the width direction W which is wider than the both end edges (that is, the position where the third joint portion overlaps in the thickness direction T is wider than the third joint portion. If the absorbent body 21 extends in the width direction W up to the position on the outer side in the direction W), the excretion fluid remaining in the third joint portion or the vicinity thereof passes through the outer surface sheet 22 and the like in the width direction W. The side oozes because the protruding portion of the absorbent body 21 extending up to a position overlapping the third joint in the thickness direction T or an outer side position in the width direction W than the third joint is sufficient. This excretion is absorbed, so it can prevent a. Further, in the present invention, the arrangement form of the third joint portion described above may be applied to one or both of the abdominal area and the back area, at least in the back area where the user's body pressure is easily applied. good. Since such a back area is an area where excretion fluid is liable to occur due to the body pressure of the user, it is possible to more effectively exert the effect produced by the arrangement form of the third joint described above.

In addition, in the present invention, the bonding form of the pair of side sheets and the absorption body portion is not limited to this aspect. For example, the pair of side sheets is outward in the width direction than the liquid flow control portion. It is also possible to join the liquid-impermeable backing film or the back sheet on this side. In this case, the liquid-impermeable side sheet and the backing sheet or the back sheet to be joined can suppress the excretion liquid to the width direction. The outer side oozes, so it is possible to more surely prevent side leakage of the excretion fluid.

In the present invention, a joining means for forming the above-mentioned joining portions such as the first joining portion, the second joining portion, and the third joining portion can be used. The joining means is not particularly limited as long as it does not hinder the effects of the present invention. Adopt arbitrary bonding means such as an adhesive means such as a thermal fusion type adhesive, a fusion means such as ultrasonic welding, and the like.

Further, in the above-mentioned embodiment, the inner side end edge in the longitudinal direction L of the first joint portion 44 of the liquid flow control portion F _C extends linearly along the width direction W. As described above, if the inner side end edge in the longitudinal direction L of the first joint portion 44 extends linearly along the width direction W, the inner side end edge in the longitudinal direction L of the first joint portion 44 is used as a starting point. The standing structure of the standing first wall portion 42 and the second wall portion 43 is easy to stabilize, and the functions of the liquid flow control portion F _C described above can be more reliably exhibited.

In this embodiment, as described above, the fluid flow control unit F _C is disposed in the abdominal area A _F and the back area A _B , and the absorber 21 is the side of the abdominal area in the longitudinal direction L as viewed from the top. The end edge 21E ₂ is located on the outer side in the longitudinal direction L from the inner side end 45E _i which is located on the innermost side in the length direction L among the inner side end edges in the width direction W of the second joint portion 45. So that both end edges in the width direction W of the absorbent body 21 are located at least in the abdomen area A _F and the back area A _B on the outer side in the width direction W than the inner side end edges in the width direction W of the base portion 41 Since it is placed in the absorption main body 2, even when the user sleeps in a prone state (that is, when the excretion fluid discharged from the user easily flows in the direction of the abdomen side of the length direction L), The liquid flow control unit F _C disposed in the abdominal area A _F can reliably prevent side leakage of the excretion fluid in the abdominal area A _F , and it is difficult to leak from the abdominal side in the longitudinal direction L.

[Elastic member] In the above embodiment, the pair of side sheets 4 and 4 are, as shown in FIG. 1, the pair of side sheets 4 near the inner side edge of the width direction W, as shown in FIG. 1. The four elastic members EL that are contracted in the longitudinal direction L and promote the erection of the inner side end edge in the width direction W are arranged along the longitudinal direction L. In the present invention, the plurality of elastic members arranged on a pair of side sheets are provided in a longitudinal direction toward the absorbent body portion in the expanded state (specifically, the absorbent body portion is passed through the pair of side sheets). The material of the shrinkage force is not particularly limited. For example, a rubber thread and a flat rubber made of natural rubber can be used. A thermoplastic elastomer such as urethane, ethylene-vinyl acetate copolymer (EVA) is formed into a linear or band shape. Arbitrary elastic members.

The size and shape of the elastic member that can be used in the absorbent article of the present invention are not particularly limited as long as the absorbent body portion in a state where the permeate-side sheet is unfolded can be contracted in the longitudinal direction. Size shape. Such dimensions are, for example, the length in the longitudinal direction of the elastic member, which is 1/4 or more, preferably 1/3 or more of the total length of the absorbent article. The fineness is in the range of 200 dtex to 800 dtex, and preferably 300 dtex to 700 dtex. In the range. In addition, the number of elastic members is not particularly limited as long as the absorbent body portion in a state where the permeate-side sheet is unfolded can be contracted in the longitudinal direction. The elastic members can be arranged in a pair of leak-proof wall portions, one and two respectively. , 3 or more arbitrary number.

Moreover, in the urine absorbing pad 1 of the above-mentioned embodiment, five (plural) elastic members EL are respectively arranged on a pair of leak-proof wall portions (side sheets), as shown in FIG. 1. The length in the longitudinal direction of the elastic member EL on the outer side in the width direction W is formed longer than the length in the longitudinal direction of the elastic member EL on the inner side in the width direction W. In this way, if the lengthwise length of the elastic member EL located on the outer side of the width direction W is longer than the lengthwise length of the elastic member EL located on the inner side of the width direction W, the pair of leak-proof wall portions It is easy to maintain the standing structure generated by the first wall portion 42 and the second wall portion 43 in the outer side portion in the width direction W, and it is possible to further ensure durability of the excretion fluid toward the outer side in the width direction W. On the other hand, in the widthwise direction W of the pair of leak-proof wall portions (that is, the portion that becomes the starting point of the pair of leak-proof wall portions and the portion that becomes the top), the deformation and The degree of freedom of movement is increased, and the body shape (shape of the intertrochanter part) of the follower of the pair of leak-proof wall portions can be easily adhered while using the pair of leak-proof wall portions. As a result, the urine absorbing pad 1 in which such a plurality of elastic members are arranged can better perform the leakproof function of a pair of leakproof wall portions.

Furthermore, in the urine absorbing pad 1 of the above-mentioned embodiment, each of the pair of leak-proof wall portions has a plurality of elastic members EL which are formed in a contractible manner in the longitudinal direction L by a plurality of elastic members EL in a plan view and extend in the longitudinal direction. The contraction area extended by L, which is the length in the longitudinal direction of the portion located on the inner side of the width direction W, is formed longer than the length of the portion located on the outer side of the width direction W. As described above, in each of the contraction regions of the pair of leak-proof wall portions, the length in the longitudinal direction of the portion on the inner side of the width direction W is longer than the length of the portion on the outer side of the width direction W. In this case, in the pair of leak-proof wall portions, the top portion becomes difficult to roll up, so that the leak-proof function of the pair of leak-proof wall portions can be more reliably exerted.

Further, in the above embodiment, the absorbent body 21, as is shown in FIG. 1, comprising: A _F in the abdomen in the art absorber 21 in the width direction W of the length of the longest part of the wide width portion is 21M, and The length in the width direction W of the absorber 21 at the boundary between the abdominal area A _F and the interfemoral area A _C is longer than the width direction W of the wide portion 21M (that is, the width direction of the absorber 21 in the abdominal area A _F The maximum length of W) is smaller than the narrow width portion 21N, and this narrow width portion 21N overlaps the above-mentioned narrowed area in a plan view. Less narrow maximum length case, at the boundary portion between the abdominal art A _F and shares A _C of the unit areas having a width direction of the absorbent body 21 W of length W than the width direction of the absorbent body abdomen art A _F of 21 If the portion 21N has a narrow width 21N, the rigidity of the urine absorbing pad 1 is relatively low. Therefore, when the urine absorbing pad 1 is worn, the urine absorbing pad 1 can easily have the aforementioned width. The portion of the narrow portion 21N is a starting point, and the surface on the opposite side of the skin is curved concavely. In addition, since the urine absorption pad 1 has a narrow width portion 21N that overlaps with the above-mentioned contraction area in a plan view, when the urine absorption pad 1 is worn, it has a large curvature in the abdominal area A _F and the interfemoral area. a _C boundary portion (i.e., in the thickness direction T and 21N repeated portion narrower portion), the leakage preventing wall surface skin portion 43 of the second wall portion of the opposite side, as is shown in FIG. 7, the absorbent is maintained The surface of the body-opposing surface side of the body portion 2 is substantially parallel to the planar shape, and the above-mentioned leak-preventing wall portion becomes easy to stand toward the skin-opposing surface side. Accordingly, this absorbent urine pad 1, since it is possible to ensure a larger curvature becomes large when worn portion (i.e., between the abdomen and thigh A _F A _C field of the art section of the boundary portion) of the leakage preventing wall portion, and the wearer's skin The surface contact area (in other words, it is difficult to form a gap between the leak-proof wall portion and the skin surface of the user), it is possible to further reliably prevent side leakage of the excretion liquid.

The present invention is applicable to various absorbent articles such as disposable diapers, sanitary napkins, incontinence pads, etc., in addition to the urine absorbing pads of the above-mentioned embodiments. In addition, the absorbent article of the present invention is not limited to the above-mentioned embodiments, and can be appropriately combined, substituted, changed, and the like within a range that does not deviate from the purpose and spirit of the present invention. In this specification, the serial numbers such as "first" and "second" are only used to distinguish the items attached to the serial numbers, and do not mean the order, priority, and importance of each item.

1‧‧‧ Urine suction pad (absorbent article)

2‧‧‧ Absorbing body part

21‧‧‧ Absorber

21A‧‧‧The first absorption layer

21B‧‧‧Second absorption layer

21E ₁ ‧‧‧ side edge of back area

21E ₂ ‧‧‧Side edge of abdominal area

21E ₃ ‧‧‧ one side end edge in width direction

21E ₄ ‧‧‧ the other side edge in the width direction

21M‧‧‧Wide width in the abdominal area

21N‧‧‧Narrow width

22‧‧‧ surface sheet

23‧‧‧ back sheet

24‧‧‧lining film

3‧‧‧Embossing Department

4‧‧‧ side sheet (leak-proof wall)

41‧‧‧ base

42‧‧‧ the first wall

43‧‧‧ the second wall

44‧‧‧ the first joint

45‧‧‧ 2nd joint

45E _i ‧‧‧ Inner side end

A _F ‧‧‧ Abdominal area

A _C ‧ ‧ ‧ Intersectoral sector

A _B ‧‧‧Back Area

A _W1 ‧‧‧Width 1st Field

A _W2 ‧‧‧Width 2nd Area

EL‧‧‧ Elastic member

F _C ‧‧‧Liquid flow control department

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

Claims (9)

An absorbent article comprising: an absorbent body portion having an absorbent body having a length direction, a width direction, and a thickness direction, and in the aforementioned length direction, an abdomen area, an interfemoral area area, and a back area; and a pair of leakproof The wall portions are respectively located at both end portions in the width direction of the absorption body portion and continuously extend across both end portions in the length direction. The leak-proof wall portions each have: facing the absorption body portion and A base portion fixed to the absorbent body portion, and a first wall portion connected to an inner side end edge in the width direction of the base portion and standing toward the skin-opposing surface side when worn, and the first wall portion The second wall portion connected to the outer side edge in the width direction and standing toward the opposite side of the skin when worn, and at least in the back area, the second wall portion includes the end edge in the length direction and has a predetermined If the length is in the longitudinal direction and the length in the predetermined width direction, the rising structure of the first wall portion and the second wall portion is controlled to control the flow of the excretion fluid toward The liquid flow control unit for controlling the width direction and the thickness direction, and further, the liquid flow control unit includes a first joining portion that joins the base portion and the first wall portion and has a predetermined length in the longitudinal direction; and The first wall portion and the second wall portion are joined and the length in the longitudinal direction of the inner side end edge in the width direction is equal to or greater than the length of the first joint portion in the longitudinal direction, and the outer side edge in the width direction The second joint portion whose length is less than the length in the longitudinal direction; The absorbent body is viewed from a plan view, and an end edge on the back region side in the longitudinal direction of the absorbent body is located inward of the width direction of the second joint portion. Among the side end edges, the inner side end portion located on the innermost side in the longitudinal direction is more on the outer side in the longitudinal direction, and both end edges in the width direction of the absorbent body are located at least in the back area. The outer side in the width direction is disposed in the absorbent body portion more than the inner side end edge in the width direction of the base portion. For example, in the absorbent article according to the first patent application range, the aforementioned absorbent body has: in the area of the intersegmental portion, both end edges in the width direction of the absorbent body are positioned in the width direction of the base portion. The inner side end edge of the outer shape has a shape of an outer shape that shrinks toward the inner side in the width direction. For example, the absorbent article according to item 1 or 2 of the patent application scope, wherein: the absorbent body is in the abdomen area and the back area, and both end edges of the absorbent body in the width direction are positioned more than the second joint The outer side edge in the width direction of the portion is more the outer side in the width direction. For example, the absorbent article according to the first scope of the patent application, wherein the aforementioned absorbent body portion includes a first area in the width direction and a second area in the width direction that are respectively arranged by a widthwise central axis extending in the lengthwise direction. A pair of embossed portions that are recessed from the opposite side of the skin in the thickness direction, the length in the width direction from the embossed portion to the inner side end edge in the width direction of the base portion, the length of the first wall portion, The total length of the widthwise length and the widthwise length of the second wall portion is longer than the widthwise length from the widthwise central axis to the embossed portion. For example, in the absorbent article according to claim 1, the inner side end edge in the longitudinal direction of the first joint portion extends linearly along the width direction. For example, in the absorbent article according to claim 1, the pair of leak-proof wall portions each include a plurality of elastic members extending in the longitudinal direction and arranged side by side in the width direction in a plan view, The plurality of elastic members has a length in the longitudinal direction of the elastic member located on the outer side in the width direction, and is longer than a length of the elastic member located on the inner side in the width direction. For example, the absorbent article according to item 6 of the patent application, wherein the pair of leakage-preventing wall portions are each formed with a plurality of elastic members that are contractible in the length direction as viewed from above, The contraction area extending in the longitudinal direction, the contraction area is a length in a length direction of a portion located on an inner side of the width direction, and is longer than a length of a portion located on an outer side of the width direction. For example, the absorbent article according to item 7 of the patent application, wherein: the absorbent body is in a boundary portion between the abdominal area and the interfemoral area, and the length in the width direction of the absorbent body is longer than that in the abdominal area. The narrow portion having a smaller maximum length in the width direction of the absorbent body, and the narrow portion is overlapped with the contracted area in a plan view. For example, in the absorbent article under the scope of patent application, among the pair of leak-proof wall sections, the liquid flow control section is disposed in the abdominal area and the back area, respectively; the absorbent body is from When viewed in plan, the abdomen-area-side end edge in the longitudinal direction of the absorbent body is located on the innermost side of the longitudinal direction than the inner-side end edge in the width direction of the second joint portion. The side end portion is further on the outer side in the longitudinal direction, and both end edges in the width direction of the absorber are at least the inner side end edges in the width direction of the base portion and the back region than the base portion in the width direction. Furthermore, it is arrange | positioned in the said absorption main-body part so that it may be the outer side of the said width direction.