JP6396362B2 - Absorption pad - Google Patents

Description

  The present invention relates to an absorbent pad attached to the inside of a diaper.

  A body fluid-absorbing inner panel (absorbing pad) that is used by being attached to the inside of a diaper is known. Patent document 1 is disclosing such a bodily fluid absorptive inner panel. The bodily fluid absorptive inner panel described in Patent Document 1 includes a top sheet, a back sheet, and an absorbent body between the top sheet and the back sheet. This body fluid-absorbing inner panel has a male surface fastener that can be hooked on the inner surface of the diaper on the outer surface of the back sheet. The male surface fastener extends in the width direction orthogonal to the longitudinal direction of the body fluid-absorbing inner panel.

JP 2001-129011

  In general, the male surface fastener has higher rigidity than other members constituting the absorbent pad. Therefore, the absorbent pad is less likely to deform along the wearer's belly or spine due to the male surface fastener extending in the width direction. Therefore, it becomes difficult to follow the shape of the diaper deformed along the wearer's belly or the roundness of the back, and a part of the absorbent pad is easily detached from the diaper during use. Thereby, it may become a factor which causes a feeling of wearing and leakage of body fluids.

  Therefore, an absorbent pad that does not easily come off the diaper is desired.

  The absorbent pad attached to the inside of the diaper according to one aspect includes a longitudinal direction, a width direction orthogonal to the longitudinal direction, a thickness direction orthogonal to the longitudinal direction and the width direction, a top sheet, and a back sheet, An absorbent body between the top sheet and the back sheet; and a locking portion that extends in the width direction on the non-skin side of the back sheet and locks to the diaper, and in the thickness direction, A stiffness changing portion that gives a stiffness difference on a region overlapping with the locking portion is provided on the non-skin surface of the absorber or on the non-skin surface side of the absorber.

  According to the said aspect, the absorption pad which cannot be easily removed from a diaper can be provided.

FIG. 1 is a plan view of an absorbent pad according to an embodiment. FIG. 2 is a plan view of the absorbent pad as seen from the side opposite to FIG. 3 is a cross-sectional view of the absorbent pad taken along line F3-F3 in FIG. FIG. 4 is a plan view of an absorber according to an embodiment. FIG. 5 is a plan view of the absorber viewed from the side opposite to FIG. FIG. 6 is a plan view of an absorbent pad according to another embodiment. FIG. 7 is a perspective view showing an example of a diaper to which an absorbent pad is attached. FIG. 8 is a plan view showing the absorbent pad attached to the developed diaper.

  At least the following matters will become apparent from the description of the present specification and the accompanying drawings.

An absorbent pad to be worn inside the diaper,
Longitudinal direction,
A width direction orthogonal to the longitudinal direction;
A thickness direction orthogonal to the longitudinal direction and the width direction;
A surface sheet;
A back sheet;
An absorber between the top sheet and the back sheet;
A locking part that extends in the width direction on the non-skin side of the back sheet and locks to the diaper,
The absorbent pad in which the rigidity change part which makes a rigidity difference on the area | region which overlaps with the said latching | locking part in the said thickness direction is provided in the non-skin surface of the said absorber, or the non-skin surface side rather than the said absorber.

  According to this aspect, the rigidity change part is an area | region which overlaps with a latching | locking part, Comprising: It is provided in the non-skin surface side rather than the non-skin surface of an absorber. In other words, the rigidity changing portion is provided in a region overlapping with the locking portion and in the vicinity of the locking portion in the thickness direction. Accordingly, the locking portion is easily bent due to a difference in rigidity due to the rigidity changing portion. Therefore, the absorbent pad is easily bent even in the region of the locking portion extending in the width direction, and easily deforms following the shape of the diaper deformed along the wearer's belly or roundness of the back. Therefore, it becomes difficult to remove the absorbent pad from the diaper.

  According to a preferred aspect, the rigidity changing portion is a recess formed on the non-skin surface of the absorbent body.

  According to this aspect, the rigidity changing portion can be easily provided by the concave portion formed on the non-skin surface side of the absorber. Moreover, by forming a recess on the non-skin surface side of the absorbent body, it is possible to prevent the surface from being uneven as much as possible on the skin surface side of the absorbent body. Thereby, a comfortable wear feeling can be given to the wearer.

  According to a preferred aspect, the rigidity changing portion is a set of a plurality of point-like concave portions arranged along an inclination direction inclined with respect to a direction in which the locking portion extends, or a line extending along the inclination direction. Shaped recess.

  According to this aspect, since the rigidity change part is arrange | positioned along the inclination direction inclined with respect to the direction where a locking part extends, a locking part can be made easy to bend in the width direction. Thereby, even in the area | region of the latching | locking part extended in the width direction, an absorption pad becomes easier to deform | transform following the roundness of the diaper currently worn, and it becomes difficult to remove | deviate from a diaper.

  According to a preferred aspect, the rigidity changing portion is inclined with respect to a direction in which the locking portion extends, and is a set of a plurality of point-like recesses arranged along a pair of inclined directions intersecting each other, or the pair of pairs Including a linear recess extending along the inclination direction, the set of the plurality of dotted recesses or the linear recess is provided in a lattice shape at least in a region overlapping with the locking portion.

  According to this aspect, since the rigidity change part is arrange | positioned along the inclination direction inclined with respect to the direction where a locking part extends, a locking part can be made easy to bend in the width direction. Furthermore, since a set of a plurality of dot-like concave portions or linear concave portions are provided in a lattice shape at least in a region overlapping with the locking portion, there is a difference in rigidity at a plurality of locations on the region overlapping with the locking portion. Provided. Thereby, an absorption pad follows the roundness of the diaper currently worn on the area | region which overlaps with a latching | locking part, becomes easy to deform | transform, and becomes difficult to remove | deviate from a diaper.

  According to a preferred aspect, the plurality of vertices of the lattice are arranged at intervals in the width direction in a region overlapping the locking portion.

  A plurality of vertices of the lattice made up of the recesses are arranged at intervals in the width direction in a region overlapping the locking portion. Thereby, in the area | region which overlaps with a latching | locking part, a highly rigid part and a low-rigidity part are located in a line by turns in the width direction. Accordingly, the locking portion can be easily bent in the width direction, and the absorbent pad can be more easily deformed following the roundness of the diaper being worn in an area overlapping with the locking portion, and is less likely to come off the diaper. .

  According to a preferred aspect, the length of the locking portion in the longitudinal direction is longer than half of the length in the longitudinal direction of one quadrangle defined by the lattice.

  According to this aspect, even if the locking portion is not accurately positioned in accordance with the lattice-shaped recess, if the locking portion is disposed on the region where the rigidity change portion exists, a plurality of vertices of the lattice are connected to the locking portion. In the overlapping area, they are arranged at intervals in the width direction. As a result, the locking portion can be easily bent in the width direction, and the absorbent pad can be more easily deformed following the roundness of the diaper being worn in the region of the locking portion extending in the width direction. It becomes harder to come off.

  According to a preferred aspect, the number of quadrangles constituting the lattice on one side of the center in the width direction is such that the lattice is on the other side of the center in the width direction at least in a region overlapping with the locking portion. Is equal to the number of squares that make up

  At least in the region overlapping with the locking portion, the same number of quadrangles forming the lattice of the concave portions exist on the left and right sides with respect to the center in the width direction, so that the locking portion 90 is also easily bent symmetrically with respect to the center in the width direction. Thereby, the discomfort of the user who is wearing can be reduced.

  According to a preferred aspect, the recess is an emboss formed on the non-skin surface side of the absorbent body, and the emboss extends from a region overlapping the locking portion to a region outside the locking portion. ing.

  Since the recess is an emboss formed on the non-skin surface side of the absorbent body, the rigidity of the absorbent body can be increased. Thereby, it can suppress that an absorber sways when it uses it for a long time.

  According to a preferred aspect, the length of the locking portion in the width direction is shorter than the length of the absorbent pad in the width direction, and the rigidity changing portion is outside of the locking portion in the width direction. Is also provided.

  Since the rigidity changing portion is present on the outer side in the width direction with respect to the locking portion, the region on the outer side in the width direction with respect to the locking portion is easily deformed in accordance with the wearer's stomach and spine. Thereby, the whole absorption pad becomes easy to change following a wearer's stomach and roundness of a back.

  According to a preferred aspect, the locking portion includes a first locking portion and a second locking portion that are divided on both sides in the width direction across the center in the width direction.

  Since the relatively rigid locking portion is divided at the center in the width direction, the absorbent pad is deformed following the roundness of the wearer's body in a region where there is no locking portion between the locking portions. It becomes easier to bend along the diaper. Furthermore, since each rigid portion has a rigidity change portion, it is easier to bend along the curvature of the diaper, although it is more difficult to bend than a region where no latch portion is present. Thereby, an absorption pad becomes difficult to remove | deviate from a diaper.

  According to a preferred aspect, the absorber has a peripheral region including an edge of the absorber, and a central region surrounded by the peripheral region, and the locking portion is the center in the longitudinal direction. The 1st latching | locking part arrange | positioned ahead of the area | region and the 2nd latching | locking part arrange | positioned in the longitudinal direction at the back side rather than the said center area | region are included.

  Since the first locking portion and the second locking portion are provided so as to avoid the central region facing the wearer's crotch, the central region of the absorbent pad is easily deformed in accordance with the wearer's movement. It is easy to maintain a state that fits the body. Furthermore, since the 1st latching | locking part and the 2nd latching | locking part are provided in the peripheral region, an absorption pad is firmly attached to a diaper in the area | region of a wearer's waist circumference, and becomes difficult to remove | deviate from a diaper.

  Hereinafter, the details of the absorbent pad according to the embodiment will be described with reference to the drawings. The absorption pad of this invention is related with the absorption pad with which the inner side of a disposable diaper is mounted | worn, for example. The disposable diaper may be an adult diaper.

  In the following description of the drawings, the same or similar parts are denoted by the same or similar reference numerals. However, it should be noted that the drawings are schematic and ratios of dimensions and the like may differ from actual ones. Therefore, specific dimensions and the like should be determined in consideration of the following description. Moreover, the part from which the relationship and ratio of a mutual dimension differ also in between drawings may be contained.

(1) Configuration of Absorption Pad FIG. 1 is a plan view of an absorption pad according to an embodiment. FIG. 1 shows the absorbent pad in a stretched state. FIG. 2 is a plan view of the absorbent pad as seen from the side opposite to FIG. 3 is a cross-sectional view of the absorbent pad taken along line F3-F3 in FIG. FIG. 4 is a plan view of the absorbent body provided in the absorbent pad, as viewed from the skin surface side facing the wearer's skin. FIG. 5 is a plan view of the absorber viewed from the side opposite to FIG.

  The absorbent pad 10 has a longitudinal direction L and a width direction W. The longitudinal direction L is a direction extending from the front side (abdomen side) of the wearer to the rear side (back side), or a direction extending from the rear side of the wearer to the front side. The width direction W is a direction orthogonal to the longitudinal direction L. Hereinafter, the side facing the wearer's skin during use may be referred to as the “skin side”. In addition, a side that is directed away from the wearer's skin during use may be referred to as a “non-skin side”.

  The absorbent pad 10 includes a top sheet 20, a back sheet 22, and an absorber 30. The topsheet 20 faces the wearer's skin when the absorbent pad 10 is worn. The top sheet 20 covers the absorber 30. The top sheet 20 may be composed of a liquid permeable sheet.

  The back sheet 22 is directed to the opposite side of the wearer's skin when the absorbent pad 10 is worn, and faces the disposable diaper. The back sheet 22 may be composed of a liquid-impermeable sheet.

  The absorber 30 is provided between the top sheet 20 and the back sheet 22. The absorber 30 includes an absorbent core 32 made of an absorbent material. The absorbent material constituting the absorbent core 32 can be formed from, for example, hydrophilic fibers, pulp, and superabsorbent polymer (SAP). The absorber 30 has a core wrap 34 that wraps the absorbent core 32. The core wrap 34 can be made of, for example, a nonwoven fabric or a tissue sheet.

  The absorbent core 32 preferably has a single layer structure. In other words, in a state where the absorbent pad 10 is extended and a natural state of the absorbent pad 10, the absorbent cores 32 in each region are arranged without overlapping each other in the thickness direction. Thereby, the thickness of the absorber 30 can be suppressed. In particular, since the absorbent pad 10 is attached to the diaper during use, it is preferable that the absorbent pad 10 be as thin as possible from the viewpoint of comfort.

  The absorbent pad 10 may have a side sheet 50 and an elastic member 52. The side sheet 50 extends from the non-skin surface side of the back sheet 22 through the outer edge in the width direction W of the absorbent pad 10 to the top sheet 20 side. The inner side portion of the side sheet 50 in the width direction W is folded back on the top sheet 20 side. Thereby, the side sheet 50 wraps the elastic member 52.

  The elastic member 52 is attached to the side seat 50 in a state of extending in the longitudinal direction L. The elastic member 52 is in a contracted state in which no external force is applied, whereby an upright gather is formed on the side sheet 50 on the side of the topsheet 20. This standing gather can suppress the lateral leakage of the liquid.

  The inner side portion of the side sheet 50 in the width direction W is joined to the topsheet 20 in the joining region at both ends in the longitudinal direction L. That is, the side sheet 50 cannot stand up from the top sheet 20 in the joining region.

  The absorbent pad 10 has a locking portion 90 that locks to the diaper on the non-skin surface side of the back sheet 22. The locking portion 90 extends in the width direction W. In FIG. 1, the locking portion 90 is perspectively shown by a dotted line. The latching | locking part 90 should just be a member which can be latched to the surface by the side of the skin surface of a diaper. For example, the locking portion 90 may be a mechanical tape having a hook that can be engaged with the nonwoven fabric.

  Both end portions of the locking portion 90 in the width direction W are covered with a sheet, here, a side sheet 50. Thereby, since the corner | angular part of the latching | locking part 90 is not exposed, a possibility that the latching | locking part 90 may catch on a user's finger | toe is reduced.

  As shown in FIGS. 4 and 5, the absorber 30 has a central region C and a peripheral region P. The central region C is a region that includes the center of the absorber 30 and does not include the edge of the absorber 30. When the absorbent pad is worn, the central region C is located at the wearer's crotch. The peripheral area P is an area surrounding the central area C and includes the edge of the absorber 30.

  The central region C includes a first central region C1 and a second central region C2 disposed before and after the first central region C1 in the longitudinal direction L. The second central region C2 preferably has a lower rigidity than the first central region C1 and the peripheral region P.

  The absorber 30 has a first pressing groove 40 and a pair of low basis weight regions 42. The first pressing groove 40 is applied to the non-skin surface side of the absorbent body 30 in the central region C. The first pressing groove 40 extends in the longitudinal direction L at the center in the width direction W. The length of the first pressing groove 40 in the longitudinal direction L may be shorter than the length of the pair of low basis weight regions 42 in the longitudinal direction L.

  The pair of low basis weight regions 42 extends along the longitudinal direction L. The pair of low basis weight regions 42 is provided at the boundary between the peripheral region P and the central region C adjacent to the central region C in the width direction W.

The low basis weight region 42 is defined by a region composed of an absorbent core having a basis weight lower than the basis weight (weight per unit area) of the absorbent core 32 in the central region C and the peripheral region P, or a region substantially not including the absorbent core. . The low basis weight region 42 may be a region including an absorbent core having a basis weight of 0 to 200 g / m ² . The low basis weight region 42 is a region including an absorbent core having a basis weight of preferably 150 g / m ² or less, more preferably 100 g / m ² or less.

  The low basis weight region 42 becomes a boundary where the rigidity of the absorbent pad 10 changes. Accordingly, the low basis weight region 42 corresponds to a region where the absorbent pad 10 is easily deformed.

  The low basis weight area 42 may be an area that does not substantially contain an absorbent material. That is, the low basis weight area 42 is a concept including an area where the basis weight of the absorbent core 32 is zero. Here, the region that does not substantially include the absorbent core means a region that does not include the absorbent material constituting the absorbent core 32 in design. In other words, the region that does not substantially include the absorbent core is a concept that includes a region in which a small amount of absorbent material is mixed during manufacturing, and is 5% or less of the basis weight of the second central region C2 adjacent to the low basis weight region 42. Is defined as a concept that may contain an absorbent material.

  When the low basis weight region 42 is a region that does not substantially contain an absorbent material, the difference in thickness between the low basis weight region 42 and the surrounding region becomes large, and the low basis weight region 42 becomes a bending base point. easy. Therefore, when a force is applied from the outside to the inside in the width direction W, the absorbent pad 10 and the absorbent body 30 are easily deformed at the low basis weight region 42. Therefore, the absorbent pad 10 is easily deformed into a W shape in a cross-sectional view along the width direction W and easily fits the wearer's body.

  The absorbent core 32 preferably extends to the edge of the absorbent pad 10 in the width direction W within the range in the longitudinal direction L where the low basis weight region 42 is provided. The region where the absorbent core 32 exists is a region having relatively high rigidity in the absorbent pad 10. That is, the relatively rigid region extends to the edge in the width direction W of the absorbent pad 10. Accordingly, when a force directed inward in the width direction from the edge in the width direction W of the absorbent pad 10 is applied, the force is efficiently transmitted to the pair of low basis weight regions 42 and the center region C. Thereby, the absorption pad 10 becomes easier to deform | transform so that it may fit a wearer's body at the time of use so that it may mention later.

  In the present embodiment, the absorbent core 32 has a linear outline along the longitudinal direction L at least in the range of the longitudinal direction L where the low basis weight region 42 is provided.

  The rigidity changing portion 46 is an area overlapping with the locking portion 90 and is provided on the non-skin surface of the absorber 30 or on the non-skin surface side of the absorber 30. In other words, the rigidity changing portion 46 is provided in a region overlapping with the locking portion 90 and in the vicinity of the locking portion 90 in the thickness direction T. As a result, the locking portion 90 is easily bent due to a difference in rigidity due to the rigidity changing portion 46. Therefore, the absorbent pad 10 is easily bent even in the region of the locking portion 90 extending in the width direction W, and easily deforms following the shape of the diaper deformed along the wearer's belly or roundness of the back. Therefore, it becomes difficult to remove the absorbent pad 10 from the diaper.

  In order to surely obtain the effect of facilitating bending of the locking portion 90, the rigidity changing portion 46 needs to be formed on the non-skin surface side of the absorbent pad 10 relative to the relatively thick absorber. There is.

  As shown in FIG. 3, the rigidity changing portion 46 is preferably a recess formed on the non-skin surface of the absorbent body 30. Hereinafter, the concave portion is also denoted by reference numeral “46”. The recessed part 46 of the absorber 30 can also be formed from the low-rigid area | region which made the fabric weight of an absorber low, or can also be formed by the embossing (pressing part) formed from the non-skin surface side of the absorber 30. FIG. The emboss may be formed on substantially the entire absorber 30 in the thickness direction, or may be formed up to a part of the region in the thickness direction. When embossing is formed up to almost the entire region in the thickness direction, it is difficult for the embossing to disappear even after the liquid is absorbed by the absorbent body 30, so that the effect of the ease of bending of the locking portion 90 by embossing can be maintained. When embossing is formed up to a partial region in the thickness direction (for example, half the thickness), the user recognizes that the absorber 30 is firmly present also in the embossed portion, so that anxiety that the liquid leaks Can be suppressed.

By forming the rigidity changing portion from the recess 46 of the absorber 30, the rigidity changing portion can be easily provided. Further, by forming the recess 46 on the non-skin surface side of the absorbent body 30, it is possible to prevent the surface of the absorbent body 30 from being uneven as much as possible. Thereby, a comfortable wear feeling can be given to the wearer.
Moreover, it is preferable that the recessed part is not formed in the skin surface side of an absorber from a viewpoint of not giving unevenness as much as possible to the one surface side of the absorber 30.

  It is preferable that the stiffness changing portion includes a linear recess 46 extending along an inclined direction inclined with respect to the direction in which the locking portion 90 extends (see FIG. 5). Instead of this, the rigidity changing portion may be configured by a set of a plurality of point-like concave portions arranged along an inclination direction inclined with respect to a direction in which the locking portion 90 extends. In other words, the rigidity changing portions may be arranged in a dotted line or a broken line in an inclined direction inclined with respect to the direction in which the locking portion 90 extends.

  In this way, when the rigidity changing portion is arranged along the inclination direction inclined with respect to the direction in which the locking portion 90 extends, the rigidity changing portion extends along the inclination direction on the region overlapping with the locking portion 90 in the thickness direction. A stiffness change point is formed. Therefore, the locking portion 90 is easily bent in the width direction W. Thereby, even in the region of the locking portion 90 extending in the width direction W, the absorbent pad 10 becomes more easily deformed following the roundness of the diaper being worn, and is less likely to come off the diaper.

  As shown in FIG. 5, it is preferable that the rigidity changing portion is composed of a linear concave portion 46 that is inclined with respect to the extending direction of the locking portion 90 and extends along a pair of inclined directions that intersect each other. Instead of this, the rigidity changing portion may be composed of a set of a plurality of point-like concave portions arranged along a pair of inclined directions intersecting each other, which is inclined with respect to the direction in which the locking portion 90 extends. In other words, a set of a plurality of dot-like recesses or a linear recess 46 is provided in a lattice shape at least in a region overlapping with the locking portion 90.

  When the rigidity changing portion is disposed along the inclined direction inclined with respect to the direction in which the locking portion 90 extends, the locking portion 90 can be easily bent in the width direction W as described above. Furthermore, since a plurality of dot-like concave portions or linear concave portions 46 are provided in a lattice shape at least in a region overlapping with the locking portion 90, a plurality of points are formed on the region overlapping with the locking portion 90. A stiffness difference is provided. Thereby, the absorption pad 10 becomes easy to deform | transform following the roundness of the diaper currently worn on the area | region which overlaps with the latching | locking part 90, and becomes difficult to remove | deviate from a diaper.

  As shown in FIG. 5, it is preferable that a plurality of vertices of the lattice formed by the concave portions 46 constituting the rigidity changing portion are arranged at intervals in the width direction W in a region overlapping with the locking portion 90. Thereby, in the area | region which overlaps with the latching | locking part 90, a highly rigid part and a low-rigidity part are located in a line with the width direction W alternately. Therefore, the locking portion 90 can be easily bent in the width direction W, and the absorbent pad 10 can be more easily deformed following the roundness of the diaper being worn in the region overlapping with the locking portion 90, so that the It becomes harder to come off.

  The length 90L of the locking portion 90 in the longitudinal direction L is preferably longer than half of the length 46L in the longitudinal direction of one quadrangle defined by the lattice made of the recesses 46. As a result, when the locking portion 90 or the recess 46 is formed, the locking portion 90 can be placed on the region where the rigidity changing portion exists without accurately aligning the lattice-shaped recess 46 with the locking portion 90. If arranged, a plurality of vertices of the grid-like recesses 46 are arranged at intervals in the width direction in a region where the apexes overlap with the locking portions 90. Accordingly, the locking portion 90 can be easily bent in the width direction W, and the absorbent pad 10 is further deformed following the roundness of the diaper being worn in the region of the locking portion 90 extending in the width direction W. It becomes easy and it becomes hard to come off from a diaper.

  The length of the locking portion 90 in the width direction W is preferably shorter than the length of the absorbent pad 10 in the width direction W, and the rigidity changing portion is preferably provided outside the locking portion 90 in the width direction W. . Specifically, as an example, the recess 46 is provided in a region overlapping the locking portion 90 and on the outer side in the width direction W than the locking portion 90.

  Since the rigidity change portion (recess 46) is present outside the locking portion 90 in the width direction W, the region outside the locking portion 90 in the width direction W is adapted to the wearer's belly and back roundness. It becomes easy to deform. Thereby, the whole absorption pad becomes easy to change following a wearer's stomach and roundness of a back.

  When the recess 46 is an emboss formed on the non-skin surface side of the absorbent body 30, since the emboss is formed by squeezing the absorbent body 30, the density of the absorbent core constituting the absorbent body 30 is relatively low. It becomes a high area. In this case, since the rigidity of the absorbent body 30 can be increased, it is possible to prevent the absorbent body from twisting when the absorbent pad is used for a long time. From such a point of view, when the recess 46 is configured by embossing, it is preferable that the recess 46 extends from a region overlapping with the locking portion 90 to a region outside the locking portion 90. Further, it is more preferable that the recess 46 is provided entirely in the peripheral region P.

  Moreover, the recessed part 47 may be formed also in the 1st center area C1. The concave portion 47 of the first central region C1 is configured by embossing. The recesses 47 are formed in a lattice shape in the first central region C1.

  The locking portion 90 includes a first locking portion disposed on the front side of the central region C in the longitudinal direction L, and a second locking portion disposed on the rear side of the central region C in the longitudinal direction L. Including. That is, the locking portion 90 is provided in the peripheral region P and is not provided in the central region C. Since the locking portion 90 is provided to avoid the center region C facing the wearer's crotch, the center region C of the absorbent pad 10 is easily deformed in accordance with the wearer's movement and fits the wearer's body. Easy to maintain state. Furthermore, since the latching | locking part 90 is provided in the peripheral area | region P, the absorption pad 10 is firmly attached to a diaper in the area | region of a wearer's waist circumference, and becomes difficult to remove | deviate from a diaper.

(2) Another Embodiment FIG. 6 is a plan view seen from the non-skin surface side (side facing the diaper) of the absorbent pad 10 according to another embodiment. About the same structure as the said embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  In the embodiment shown in FIG. 6, the locking portion includes a first locking portion 90 a and a second locking portion 90 b that are divided on both sides of the width direction W across the center in the width direction W. That is, the locking portion does not exist at the center in the width direction W. Since the relatively rigid locking portions 90a and 90b are divided at the center in the width direction W, the absorbent pad 10 is a diaper deformed following the roundness of the wearer's body at the center in the width direction W. It becomes easier to bend along. Thereby, an absorption pad becomes difficult to remove | deviate from a diaper.

  In addition, although arrangement | positioning of the 1st latching | locking part 90a and the 2nd latching | locking part 90b is arbitrary, it is more preferable to be provided in the position demonstrated by embodiment shown in FIGS.

(3) Disposable diaper to which an absorbent pad is attached FIG. 7 is a perspective view showing an example of a diaper to which an absorbent pad is attached. FIG. 8 is a plan view showing the absorbent pad attached to the developed diaper. FIG. 8 shows the absorbent pad and diaper in a stretched state. The disposable diaper may be a diaper for adults, for example.

  The disposable diaper 1 may have a pant-type structure as an example. The disposable diaper 1 has a waist area applied to the wearer's waist and a crotch area applied to the wearer's crotch. The waistline edges 4, 4 'located on the outer side in the width direction W of the front waistline region are joined to the rear waistline edges 6, 6' located on the outside in the lateral direction W of the rear waistline region S2, respectively. The diaper 1 is formed in a pants shape. The disposable diaper 1 has a pair of leg-hole openings 9 surrounding the wearer's leg in a pant-shaped state. The crotch region is a region between the pair of leg openings 9.

  The disposable diaper 1 includes an absorbent main body 1A. The absorbent main body 1A may include a top sheet, a back sheet, and an absorber 130 between the top sheet and the back sheet. The absorber 130 is provided at least in the crotch region. The absorber 130 may be formed of a mixed powder such as pulverized pulp or a superabsorbent polymer.

  The absorbent pad 10 described above is attached to the crotch region of the disposable diaper 1. After the wearer excretes, only the absorbent pad 10 can be replaced. Thereby, a disposable diaper can be used for a long time.

  The width W4 of the absorbent pad 10 in the width direction W is preferably larger than the minimum width W5 in the width direction W of the absorbent body 130 disposed in the crotch region of the diaper. Thereby, when the absorption pad 10 is mounted | worn with a diaper, the both ends of the width direction W outer side of the absorption pad 10 will protrude outside the width direction W of the absorber 130 of a diaper in a crotch region. The force received from the side in the width direction W from the wearer's leg by being sandwiched between both the legs of the wearer is transmitted to the absorbent pad 10 before the absorbent body 130 disposed in the crotch region of the diaper. Therefore, since the deformation of the absorbent pad 10 is promoted and the absorbent pad 10 fits the body, even if the absorbent pad 10 and the diaper are overlapped and worn, it is difficult for the wearer to feel uncomfortable.

  Further, in the crotch region, the absorbent pad 10 is present up to a region wider than the absorbent body 130 of the diaper 1, so that it is difficult for the liquid to leak into the diaper 1. Thereby, there is an advantage that only the absorbent pad 10 needs to be replaced many times without replacing the diaper.

  Although the present invention has been described in detail using the above-described embodiments, it is obvious to those skilled in the art that the present invention is not limited to the embodiments described in this specification. The present invention can be implemented as modified and changed modes without departing from the spirit and scope of the present invention defined by the description of the scope of claims. Therefore, the description of the present specification is for illustrative purposes and does not have any limiting meaning to the present invention.

  For example, in the said embodiment, a rigidity change part is formed from the recessed part formed in the non-skin surface side of an absorber. Instead, the rigidity changing portion is a convex portion formed on the non-skin surface side of the absorber, a concave portion or a convex portion formed on a member (for example, a back sheet) provided on the non-skin surface side of the absorber 30. Further, it may be a concave portion or a convex portion formed in the locking portion 90. The rigidity changing portion may be a region where the hook of the locking portion 90 is crushed. Further, the stiffness changing portion may be a non-woven fabric provided on the non-skin surface side with respect to the absorbent body 30, specifically, a boundary of the non-woven fabric. As described above, the rigidity change point only needs to define a rigidity change point for making the locking portion 90 easy to bend.

DESCRIPTION OF SYMBOLS 10 Absorbing pad 20 Top sheet 22 Back sheet 30 Absorber 46 Stiffness change part (concave part)
90 Locking part C Central area C1 1st central area C2 2nd central area P Peripheral area L Longitudinal direction W Lateral direction

Claims (10)

An absorbent pad to be worn inside the diaper,
Longitudinal direction,
A width direction orthogonal to the longitudinal direction;
A thickness direction orthogonal to the longitudinal direction and the width direction;
A surface sheet;
A back sheet;
An absorber between the top sheet and the back sheet;
A locking part that extends in the width direction on the non-skin side of the back sheet and locks to the diaper,
A rigidity changing portion that gives a rigidity difference on a region overlapping with the locking portion in the thickness direction is provided on the non-skin surface of the absorber, or on the non-skin surface side of the absorber ,
The rigidity changing portion includes a collection of a plurality of dotted concave portions arranged along an inclined direction inclined with respect to a direction in which the locking portion extends, or a linear concave portion extending along the inclined direction. pad. An absorbent pad to be worn inside the diaper,
Longitudinal direction,
A width direction orthogonal to the longitudinal direction;
A thickness direction orthogonal to the longitudinal direction and the width direction;
A surface sheet;
A back sheet;
An absorber between the top sheet and the back sheet;
A locking part that extends in the width direction on the non-skin side of the back sheet and locks to the diaper,
A rigidity changing portion that gives a rigidity difference on a region overlapping with the locking portion in the thickness direction is provided on the non-skin surface of the absorber, or on the non-skin surface side of the absorber,
The rigidity changing portion is inclined with respect to a direction in which the locking portion extends, and is a set of a plurality of point-like concave portions arranged along a pair of inclined directions intersecting each other, or a line extending along the pair of inclined directions. Shaped recesses,
The absorbent pad , wherein the collection of the plurality of dot-like recesses or the linear recess is provided in a lattice shape at least in a region overlapping with the locking portion . The absorbent pad according to claim 2 , wherein a plurality of vertices of the lattice are arranged at intervals in the width direction in a region overlapping with the locking portion. 4. The absorbent pad according to claim 3 , wherein the length of the locking portion in the longitudinal direction is longer than half of the length in the longitudinal direction of one quadrangle defined by the lattice. The number of squares constituting the grid on one side of the center in the width direction is the number of squares constituting the grid on the other side of the center in the width direction at least in a region overlapping with the locking portion. The absorbent pad according to claim 2 , which is equal. An absorbent pad to be worn inside the diaper,
Longitudinal direction,
A width direction orthogonal to the longitudinal direction;
A thickness direction orthogonal to the longitudinal direction and the width direction;
A surface sheet;
A back sheet;
An absorber between the top sheet and the back sheet;
A locking part that extends in the width direction on the non-skin side of the back sheet and locks to the diaper,
A rigidity changing portion that gives a rigidity difference on a region overlapping with the locking portion in the thickness direction is provided on the non-skin surface of the absorber, or on the non-skin surface side of the absorber,
The length of the locking portion in the width direction is shorter than the length of the absorbent pad in the width direction,
The said rigidity change part is an absorption pad provided also in the said width direction outer side rather than the said latching | locking part . The said rigidity change part is an absorption pad of any one of Claims 1-6 which is a recessed part formed in the non-skin surface of the said absorber. An absorbent pad to be worn inside the diaper,
Longitudinal direction,
A width direction orthogonal to the longitudinal direction;
A thickness direction orthogonal to the longitudinal direction and the width direction;
A surface sheet;
A back sheet;
An absorber between the top sheet and the back sheet;
A locking part that extends in the width direction on the non-skin side of the back sheet and locks to the diaper,
A rigidity changing portion that gives a rigidity difference on a region overlapping with the locking portion in the thickness direction is provided on the non-skin surface of the absorber, or on the non-skin surface side of the absorber,
The rigidity changing portion is a recess formed on the non-skin surface of the absorber,
The recess is an emboss formed on the non-skin surface side of the absorber,
The embossing is an absorbent pad extending from a region overlapping with the locking portion to a region outside the locking portion . The locking portion includes a first locking portion and a second locking portion which is divided on both sides of the width direction across the center of the width direction, according to any one of claims 1 8 Absorption pad. The absorber has a peripheral region including an edge of the absorber, and a central region surrounded by the peripheral region,
The locking portion includes a first locking portion disposed on the front side of the central region in the longitudinal direction, and a second locking portion disposed on the rear side of the central region in the longitudinal direction. The absorption pad of any one of Claim 1 to 9 containing.

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