JP4972384B2 - Absorbent articles - Google Patents

Description

  The present invention relates to an absorbent article for absorbing liquid.

Conventionally, in order to absorb a predetermined liquid such as menstrual blood, an absorbent article absorbs the liquid and absorbs the liquid discharged from the human body as soon as possible and away from the human body. It is known to have a surface member provided between the absorbent member and the human body. As a surface member of such an absorbent article, for example, a thermoplastic film and a fiber layer are overlapped and heated between two heated rolls, and the thermoplastic film is melted by a pressing die provided on one of the rolls, and the opening portion. In addition, it is known to use a tool that is fixed by forming a fine embossing. (For example, refer to Patent Document 1). And the opening part and minute embossing which are sent between two rolls and are formed in a surface member are formed substantially uniformly over the whole region.
Japanese Patent Publication No. 2-102046 (page 2-6, Fig. 2)

  Since the absorbent article as described above is passed between the two rolls and the openings and the minute embossing are formed almost uniformly, the absorbent article has almost the same thickness in the entire region. By the way, it is desirable that the absorbent article is in close contact with the body in order to prevent the liquid from leaking. For this reason, in order to increase the adhesiveness of the absorbent article, if the thickness is increased in the entire area of the absorbent article, the absorbent article having a large size as in recent years has a poor air permeability because a wide range is in close contact with the body. There is a problem that there is a fear that people feel uncomfortable. In addition, when the thickness of the absorbent article is reduced in order to suppress discomfort, there is a problem that a gap may be generated between the body and the absorbent article and liquid may leak.

  This invention is made | formed in view of the above conventional problems, Comprising: It aims at providing the absorptive article which air permeability is good and a liquid does not leak easily.

In order to solve the problems as described above, the main present invention includes an absorbing member for absorbing liquid, and a liquid-permeable surface member covering the surface side of the absorbing member. The surface sheet disposed outside and the intermediate sheet interposed between the surface sheet and the absorbing member are bonded at a plurality of dot-shaped bonding portions, and in the longitudinal direction of the surface member The density of the joint provided in the central predetermined region is lower than the density of the joint provided in the outer region of the predetermined region in the longitudinal direction, whereby the surface member of the predetermined region The absorbent article is characterized in that the thickness is larger than the thickness in a region outside the predetermined region .

  ADVANTAGE OF THE INVENTION According to this invention, it is possible to provide the absorptive article which has favorable air permeability and cannot leak a liquid easily.

  This specification and the drawings disclose at least the following matters.

  An absorbent member for absorbing liquid; and a liquid-permeable surface member that covers a surface side of the absorbent member, wherein the surface member is disposed on an outer surface, the surface sheet, and the absorption The intermediate sheet interposed between the members is bonded at a plurality of dot-shaped bonding portions, and the density of the bonding portions provided in a predetermined region on the center side of the surface member is the predetermined region. It is lower than the density of the said junction part provided in the area | region of the outer side, It is an absorbent article characterized by the above-mentioned.

Moreover, since the density of a junction part is higher than the predetermined area | region in the area | region outside the predetermined area | region of the center side, the thickness of a surface sheet and an intermediate sheet becomes thin. For this reason, at a position away from the site where menstrual blood or the like is excreted in the predetermined area, the thickness of the top sheet and the intermediate sheet is reduced, so that heat storage is less than that in the predetermined area on the center side. It becomes difficult, and it is possible to reduce a wearer's discomfort.

  Moreover, since the density of a junction part is lower than the predetermined area | region in the area | region outside the predetermined area | region of the center side, the thickness of a surface sheet and an intermediate sheet becomes thin. For this reason, at a position away from the site where menstrual blood or the like is excreted in the predetermined area, the thickness of the top sheet and the intermediate sheet is reduced, so that heat storage is less than that in the predetermined area on the center side. It becomes difficult, and it is possible to reduce a wearer's discomfort.

In such an absorbent article, it is desirable that the surface member has a vertical recess that is continuous with the longitudinal direction of the absorbent member in a region outside the predetermined region on the surface side.
According to such an absorbent article, since it has a vertical recess on the surface side of the surface member, a gap due to the vertical recess can be formed between the skin and the skin abutted on the surface side of the surface member. Is possible. For this reason, it is possible to further suppress the adhesion and improve the air permeability. In particular, since the gap due to the longitudinal recess is continuous in the longitudinal direction, the longitudinal recess becomes an air flow path in the longitudinal direction, and air permeability can be further improved.

In such an absorbent article, the surface member has a lateral recess continuous in a crossing direction intersecting a longitudinal direction of the absorbent member in a region outside the predetermined region on the absorbent member side. It is desirable.
According to such an absorbent article, since the surface member is provided with the lateral recess that extends along the direction intersecting the longitudinal direction, the liquid that has permeated from the surface sheet side is guided along the lateral recess. For this reason, since the liquid reaching the absorbing member is easily diffused in the crossing direction between the intermediate sheet and the absorbent body, the liquid can be absorbed in a wide area, thereby providing high absorbency.

In such an absorbent article, it is preferable that the joint portion is formed at a position where the vertical recess and the horizontal recess intersect.
According to such an absorbent article, since the joint portion is formed at a position where the vertical concave portion and the horizontal concave portion intersect, the joint portion is not formed outside the vertical concave portion and the horizontal concave portion. For this reason, it is possible to provide an absorbent article having a vertical recess and a horizontal recess, and having a thickness other than the vertical recess and the horizontal recess and having excellent adhesion.

In such an absorbent article, it is preferable that the top sheet and the intermediate sheet are nonwoven fabrics containing heat-meltable fibers, and the joint portion is heat-welded.
According to such an absorbent article, since it is possible to join the top sheet and the intermediate sheet by heat welding, for example, without performing a complicated operation such as applying an adhesive, air permeability is good, In addition, it is possible to provide an absorbent article in which liquid does not easily leak.

=== Embodiment ===
First, the outline | summary of a structure of the absorbent article which concerns on this embodiment is demonstrated. The absorbent article of the present embodiment is a sanitary napkin, and in the following, the side in contact with the body is the front side, the side in contact with the underwear is the back side, and the end located on the front side of the human body when worn is the front end, the back The description will be given with the end located on the side as the rear end.

  FIG. 1 is a plan view showing a surface side of an absorbent article according to the present embodiment, and FIG. 2 is a plan view for explaining vertical and horizontal recesses formed in the absorbent article according to the present embodiment. 3 is an AA sectional view in FIG. 2, and FIG. 4 is a BB sectional view in FIG.

  As shown in the drawing, the absorbent article 1 in the present embodiment has a shape that is long in a predetermined direction, and is provided on the back surface of the absorbent member 10 that has a substantially rectangular shape for absorbing liquid such as menstrual blood. The back sheet 30, the liquid permeable surface member 20 covering the surface side of the absorbent member 10, and the side sheets 25 disposed on both sides of the absorbent member 10 in a direction intersecting the longitudinal direction are included. .

  In the absorbent article 1 of the present embodiment, it is assumed that the body excretion opening part is in contact with the absorbent article 1 on the center line in the width direction of the absorbent article 1 and on the front end side from the center in the longitudinal direction. The body excretion opening part contact assumed position Z is located.

  The absorbent member 10 includes an absorbent body material 12 formed from pulverized pulp obtained by pulverizing sheet-like pulp and a superabsorbent polymer, and thin paper (not shown) such as tissue paper, and has a predetermined thickness. A sheet of absorbent material 12 is wrapped in thin paper. Here, the thin paper is a sheet having a liquid permeability and finer than the particles of the superabsorbent polymer, and prevents the superabsorbent polymer from leaking to the outside of the thin paper. In addition, the absorbent body material 12 may include a heat-meltable fiber in order to prevent a loss of shape during use.

  The back sheet 30 is a thermoplastic and liquid impermeable sheet such as polyethylene or polypropylene. The back sheet 30 is formed sufficiently wider than the absorbent member 10, and the outer edge portion thereof is located outside the outer edge portion of the absorbent member 10 in the entire periphery. In addition, on both sides in a direction intersecting the longitudinal direction (hereinafter referred to as the width direction), the holding is extended outward in the width direction within a predetermined range centered on the body excretion opening portion contact position Z in the longitudinal direction. A portion 32 is formed.

  The surface member 20 has a width direction slightly larger than that of the absorbent member 10, and the longitudinal direction has substantially the same length as that of the back sheet 30, and covers the entire surface of the absorbent member 10. Details of the surface member 20 will be described later.

  The side sheet 25 is an appropriate nonwoven fabric such as an air-through nonwoven fabric, a spunbond nonwoven fabric, or a nonwoven fabric composed of a spunbond-meltblown-spunbond layer formed of synthetic resin fibers.

  In the absorbent article 1, the surface member 20 is joined to the surface side of the absorbent member 10 with a hot-melt adhesive, and further, the absorbent article 1 is put into a predetermined position by deep groove embossing that presses in the thickness direction using a high-temperature pressing member. A deep groove portion 19 is formed. The absorbing member 10 and the surface member 20 are more firmly joined by the deep groove portion 19 formed by deep groove embossing. Moreover, the formed deep groove part 19 becomes a bending induction part for bending so that it may adhere easily along the body when the absorbent article 1 is worn. In the present embodiment, three regions partitioned by the deep groove portion 19 are formed. In the following description, these three regions will be described as a first region 10a, a second region 10b, and a third region 10c from the front end side along the longitudinal direction.

  A back sheet 30 is bonded to the absorbing member 10 and the surface member 20 on the back side with a hot melt adhesive. In addition, a side sheet 25 is bonded to the front surface side by a hot melt adhesive from a position slightly overlapping each side of the absorbent member 10 to the back sheet. And in the position where the back sheet 30, the absorbing member 10, the front member 20, and the side sheet 25 overlap, the embossing by the pressing member heated to a low temperature is formed with the line-shaped and flower-shaped shallow groove portions 18, The back sheet 30, the absorbing member 10, the front member 20, and the side sheet 25 are joined more firmly.

  The outer edge portion of the absorbent article 1 is subjected to a round seal process that is heat-welded at a low temperature to form a reinforced round seal portion 1a.

  The surface member 20 has a two-layer structure, and includes a surface sheet 14 disposed outside in the state of the absorbent article 1, and an intermediate sheet 16 interposed between the surface sheet 14 and the absorbent member 10. Yes.

  The surface sheet 14 and the intermediate sheet 16 are each made of a nonwoven fabric containing appropriate heat-meltable fibers as materials, and air-through nonwoven fabric formed from cellulose fibers such as rayon, synthetic resin fibers, or synthetic resin fibers. A spunlace nonwoven fabric formed from the above is used. Since the surface sheet 14 is located on the surface side in contact with the body, a sheet softer than the thin paper is used. The intermediate sheet 16 is a member having a higher liquid permeability formed at a higher density than the top sheet 14. By providing the intermediate sheet 16 between the top sheet 14 and the absorbent member 10, the intermediate sheet 16 penetrates the top sheet 14. The liquid thus moved is moved to the intermediate sheet 16 side where the liquid drawing property is higher than that of the top sheet 14.

 FIG. 5 is a view showing the surface of the surface member according to the present embodiment. FIG. 6 is a view showing the back surface of the front surface member according to the present embodiment. In FIG. 5 and FIG. 6, for convenience of explanation, a position corresponding to the second region when joined to the absorbing member 10 is indicated by a one-dot chain line.

  Although the surface member 20 is provided so as to cover the absorbent member 10, a predetermined region on the central side in the absorbent member 10 that is around the body excretion opening portion contact assumed position Z of the absorbent article 1 is heat-welded. The junction 15 is formed so that the density is lower than that of other regions. In the case of the present embodiment, of the three regions 10a, 10b, and 10c partitioned by the deep groove embossing, the region including the body excretion opening portion contact estimated position Z, that is, the three partitioned regions 10a, 10b, and 10c. The second region 10b located in the middle of the region corresponds to a predetermined region on the center side, and the density of the joint portion 15 is low.

 The top sheet 14 constituting the top member 20 is provided with a plurality of vertical recesses 14a connected along the longitudinal direction over the entire region at appropriate intervals in the width direction. That is, the plurality of vertical recesses 14a are provided from the front end to the rear end direction of the absorbent article 1, and the contour on the surface side when the topsheet 14 is cut in the width direction has a wave shape.

  The intermediate sheet 16 is provided with a plurality of lateral recesses 16a connected along the width direction except for the second region 20b at appropriate intervals in the longitudinal direction. In the second region 10b, a plurality of lateral recesses 16b having a narrow width are provided at appropriate intervals so as to be continuous with the lateral recesses 16a provided on both sides of the second region 10b in the width direction. That is, in the second region 10 b, a plurality of lateral recesses 16 b having a narrow width are provided along the width direction of the absorbent article 1. And the horizontal recessed part 16b with a narrow width | variety is arrange | positioned so that every other one may be intersected with one of the some vertical recessed parts 14a provided in the width direction at appropriate intervals.

  The top sheet 14 and the intermediate sheet 16 are overlapped so that the vertical recesses 14a and the horizontal recesses 16a and 16b are substantially orthogonal to each other, and the vertical recess 14a of the top sheet 14 and the horizontal recesses 16a and 16b of the intermediate sheet 16 Are joined together by heat welding at a position where the two intersect each other to form an integral surface member 20. And in each part where the vertical recessed part 14a and the horizontal recessed parts 16a and 16b cross | intersect, it heat-welds and the dot-shaped junction part 15 is formed. That is, since the vertical recess 14a which is a thin portion on the surface sheet 14 side and the horizontal recesses 16a and 16b which are thin portions on the intermediate sheet 16 side are heat-welded, the outside of the vertical recess 14a and the horizontal recesses 16a and 16b The thick portions of the top sheet 14 and the intermediate sheet 16 are not compressed by joining the top sheet 14 and the intermediate sheet 16, and the joint portion 15 is not formed. For this reason, the site | part in which the vertical recessed part 14a and the horizontal recessed parts 16a and 16b are not formed of the surface member 20 has the thickness of the surface sheet 14 and the intermediate sheet 16 in the state which is not pressed.

  The surface member 20 according to the present embodiment includes a portion protruding to the intermediate sheet 16 side of the longitudinal recess 14 a provided in the top sheet 14 and a lateral recess provided in the intermediate sheet 16 in the region outside the second region 10 b. The part protruding to the surface sheet 14 side of 16a forms a lattice shape, and all the intersecting positions (hereinafter referred to as intersections) are joined to form a joined part 15. On the other hand, in the second region 10b, the portion projecting to the intermediate sheet 16 side of the vertical recess 14a provided in the top sheet 14 and the side sheet 14 of the lateral recess 16b having a narrow width provided in the intermediate sheet 16 project. A junction 15 is formed at a position where the portion intersects. For this reason, the junction part 15 formed in the 2nd area | region is formed every other in the longitudinal direction and the width direction with respect to the junction part 15 formed in the area | region outside the 2nd area | region. . That is, the interval between the adjacent joints 15 in the second region 10b is almost twice the interval between the adjacent joints 15 in the region outside the second region 10b in both the longitudinal direction and the width direction. Yes. For this reason, the thickness of the 2nd field 10b is thicker than the thickness of fields other than the 2nd field 10b.

 More specifically, in the second region 10b, between two joints 15 adjacent in the longitudinal direction and the width direction, an intermediate position that is equidistant from the two joints 15 is farthest from the welded position. This is the position where the wall thickness is the thickest. On the other hand, in the region outside the second region 10b, since the distance between the adjacent joints 15 is half of the distance between the joints 15 adjacent in the second region 10b, the joints adjacent in the second region 10b. The joint 15 is also formed at an intermediate position 15. That is, at the position relative to each joint portion 15, the thickest position in the second region 10b is most pressed and thinned in the region outside the second region 10b. For this reason, the second region 10b is thicker than the region outside the second region 10b, and has a large amount of deformation in the thickness direction when pressed against the body or the like, and matches the unevenness of the body. It is in close contact with the body by deforming. And since the absorbent article 1 of this embodiment contains the body excretion part site | part contact assumed position Z in the 2nd area | region 10b with high adhesiveness, the 2nd area | region 10b adheres to a body excretion part site | part at the time of wear. Therefore, it is possible to reliably absorb the excreted liquid and prevent leakage to the outside. Moreover, since the 2nd area | region 10b is formed thickly, it is rich in cushioning properties and the touch is also favorable.

 Moreover, since the area | region outside the 2nd area | region 10b is thinner than the 2nd area | region 10b and there is little heat storage property, it becomes difficult to peel off. Furthermore, since the surface sheet 14 of the present embodiment is formed with a longitudinal recess 14a continuous along the longitudinal direction, a gap is formed between the body and the body along the front-rear direction when worn, and air permeability is further improved. Has been enhanced. For this reason, in areas other than the second area 10b that are relatively far from the body excretion opening part contact assumed position Z, air permeability is ensured, so that stuffiness or the like is suppressed and the wearer's discomfort is reduced. It is possible to provide the absorbent article 1 that can be used in a comfortable state.

 Further, the intermediate sheet 16 provided on the absorbent member 10 side of the surface member 20 has a lateral recess 16a connected along the intersecting direction intersecting the longitudinal direction of the absorbent member 10, and a lateral recess 16b continuous along the intersecting direction. Therefore, the liquid that permeates from the top sheet 14 side is easily guided along the lateral recesses 16a and 16b, and the liquid that reaches the absorbing member 10 is easily diffused in the crossing direction. For this reason, the liquid can be diffused and absorbed in a wide region, and the absorbent article 1 having higher absorbability can be realized.

  The surface member 20 of this embodiment is manufactured by the following methods, for example. FIG. 7 is a view for explaining a method of manufacturing the surface member. FIG. 8 is a conceptual diagram for explaining the surface shape of a pair of rollers for manufacturing the surface member.

  As shown in the drawing, the surface member 20 is supported by a shaft provided in the same direction, and the surface sheet 14 is interposed between the two rollers 50 and 51 facing in the vertical direction from the lower side to the intermediate sheet 16. Are supplied from above.

  As shown in FIG. 8, the lower roller 51 disposed on the top sheet 14 side is provided with a plurality of rib-like annular protrusions 51 a spaced in the axial direction along the circumferential direction. The upper roller 50 arranged on the intermediate sheet 16 side is provided with a plurality of rib-like linear protrusions 50a at intervals in the circumferential direction along the axial direction. When the upper and lower rollers 50 and 51 rotate, the top sheet 14 and the intermediate sheet 16 supplied between them are pressure-bonded and joined at a position where the annular protrusion 51a and the linear protrusion 50a face each other. The

  In the upper roller 50, the linear protrusion 50a is divided in the axial direction in order to form a lateral recess 16b having a narrow width at a portion where the position corresponding to the second region 10b of the surface member 20 is joined. A protrusion 50b is provided. Each of the dividing protrusions 50b is disposed so as to face every other annular protrusion 51a of the plurality of annular protrusions 51a provided on the lower roller 51 in the width direction. Also in the direction, one annular protrusion 51a among the plurality of annular protrusions 51a provided on the lower roller 51 is arranged so as to face every other in the circumferential direction.

  The front sheet 14 is provided so as to be along the lower roller 51 and to face the lower roller 51 before being overlapped with the upper and lower rollers 50 and 51 by being overlapped with the intermediate sheet 16. The vertical recess 14a is formed by being bent by the guide roller 52. The guide roller 52 has an annular protrusion 52a formed at an equal pitch with the annular protrusion 51a of the lower roller 51, and the tips of the annular protrusions 51a and 52a are opposed to the roller 51, It is arrange | positioned in the position of meshing | engaging without contacting 52. For this reason, the vertical recess 14 a is formed on the top sheet 14 from a position passing between the lower roller 51 and the guide roller 52. At this time, since the lower roller 51 is subjected to a temperature close to the melting point of the hot-melt fiber contained in the top sheet 14, a vertical recess having a wavy cross-sectional shape even without a large pressing force. 14a is formed.

  On the other hand, before the intermediate sheet 16 is overlapped with the top sheet 14 and sandwiched between the upper and lower rollers 50 and 51, the intermediate sheet 16 is stretched along the upper roller 50 while being applied with tension, thereby forming the lateral recesses 16 a and 16 b. Is done. At this time, since the upper roller 50 is subjected to a temperature close to the melting point of the hot-melt fiber contained in the intermediate sheet 16, the lateral recess 16a, 16b is formed. At this time, the vertical concave portion 14a and the horizontal concave portions 16a, 16b formed before being sandwiched between the upper and lower rollers 50, 51 are formed by bending the vertical concave portion 14a formed by bending by the guide roller 52, the horizontal concave portion 16a, Shaped more clearly than 16b.

  The top sheet 14 formed with the vertical recesses 14a and the intermediate sheet 16 formed with the horizontal recesses 16a, 16b are stacked between the upper and lower rollers 50, 51 subjected to temperature as described above. The annular protrusion 51a and the linear protrusion 50a are pressed and thermally welded at positions where they face each other.

  In this way, by passing the top sheet 14 and the intermediate sheet 16 in a state of being overlapped between the heated upper and lower rollers 50 and 51, the linear protrusion 50a provided on the upper roller 50 and the lower side The surface sheet 14 and the intermediate sheet 16 can be joined by heat welding at a position where the annular protrusion 51a provided on the roller 51 faces. At this time, by dividing the linear protrusion 50a at a position corresponding to the second region 10b, by providing a portion where the annular protrusion 51a and the linear protrusion 50a do not face each other, The number can be partially reduced. In this embodiment, the example in which the linear protrusion 50a formed on the upper roller 50 is divided has been described. However, by dividing the annular protrusion 51a of the lower roller 51, the density of the joint 15 is increased. A low region may be formed.

  Moreover, by making the surface sheet 14 and the intermediate sheet 16 into a non-woven fabric containing a heat-meltable fiber, the heat-melt fiber is melted by passing between the pair of heated rollers 50 and 51 while pressing the surface sheet. 14 and the intermediate sheet 16 can be easily heat-welded. For this reason, it is possible to provide the absorbent article 1 having good air permeability and less liquid leakage without performing a complicated operation such as applying an adhesive.

=== Other Embodiments ===
Moreover, in the said embodiment, although the absorption member 10 demonstrated the structure provided with the one absorber raw material 12 in the center of the width direction for convenience of explanation, it does not restrict to this. For example, it is good also as a structure provided with a side part absorber along the longitudinal direction in the both ends of the width direction in the absorption member 10, respectively. Moreover, it is good also as a structure provided with a solid gather in each of the said both ends instead of a side part absorber.

  In the said embodiment, although the area | region where the density of the junction part 15 of the surface sheet 14 and the intermediate sheet 16 is low was made into the 2nd area | region 10b, it does not restrict to this. In addition, the arrangement of the joints 15 in the region where the density of the joints 15 is low is set every other in the longitudinal direction and the width direction with respect to the arrangement of the joints 15 in the region where the density is high. The predetermined region on the center side is not limited, and it is sufficient that the junction 15 is provided to increase the thickness so that the predetermined region can be easily adhered to the body, and the junction 15 needs to be arranged with regularity. There is no.

  Moreover, in the said embodiment, although the example where the vertical recessed part 14a and the horizontal recessed parts 16a and 16b were substantially orthogonal was demonstrated, the angle which the vertical recessed part 14a and the horizontal recessed parts 16a and 16b cross is not restricted to this. Absent. Furthermore, although the example which provided the vertical recessed part 14a in the surface sheet 14 and each provided the horizontal recessed part 16a in the intermediate | middle sheet was demonstrated, the vertical recessed part 14a and the horizontal recessed part 16a do not necessarily need to be provided, and the predetermined | prescribed center side of the surface member 20 is predetermined. If the density of the joint provided in the region is lower than the density of the joint provided in the region outside the predetermined region, the absorption having high absorbency in the predetermined region and air permeability in the region outside the predetermined region It is possible to realize a sex product.

  In the above-described embodiment, an example in which the body excretion opening part contact assumed position Z is located on the front end side from the center in the longitudinal direction has been described. However, the body excretion opening part contact assumed position Z is located in the center in the longitudinal direction. It doesn't matter.

  In the above embodiment, as an example of the manufacturing method of the surface member 20, the example in which the linear protrusion 50a is provided on the upper roller 50 and the annular protrusion 51a is provided on the lower roller 51 has been described. The upper and lower rollers are each provided with a protrusion having a small tip area, and the joint may be formed at a position where the protrusions face each other, and the manufacturing method is not limited to the above method.

  In the present embodiment, the back sheet 30 is a thermoplastic and liquid-impermeable sheet such as polyethylene and polypropylene, but includes a thermoplastic and liquid-impermeable sheet, for example, a sheet in which thin paper or nonwoven fabric is laminated. A shaped member may be used.

  Moreover, the said embodiment is for making an understanding of this invention easy, and is not for limiting and interpreting this invention. The present invention can be changed and improved without departing from the gist thereof, and it is needless to say that the present invention includes equivalents thereof.

It is a top view which shows the surface side of the absorbent article which concerns on this embodiment. It is a top view for demonstrating the vertical recessed part and the horizontal recessed part which were formed in the absorbent article which concerns on this embodiment. It is AA sectional drawing in FIG. It is BB sectional drawing in FIG. It is a figure which shows the surface of the surface member which concerns on this embodiment. It is a figure which shows the back surface of the surface member which concerns on this embodiment. It is a figure for demonstrating the manufacturing method of a surface member. It is a conceptual diagram for demonstrating the surface shape of a pair of roller for manufacturing a surface member.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Absorbent article, 1a Round seal part, 10 Absorbing member, 10a 1st area | region,
10b 2nd area | region, 10c 3rd area | region, 12 absorber material, 14 surface sheet,
14a Longitudinal recess, 15 joints, 16 intermediate sheet, 16a lateral recess,
16b Narrow lateral recess, 18 shallow groove, 19 deep groove, 20 surface member,
25 side sheet, 30 back sheet, 32 holding part, 50 upper roller,
50a linear protrusion, 50b dividing protrusion, 51 lower roller, 51a annular protrusion,
52 guide roller, 52a annular projection, Z body excretion port part contact assumed position

Claims (6)

An absorbent member for absorbing liquid;
A liquid permeable surface member covering the surface side of the absorbent member,
In the surface member, a surface sheet disposed on the outside, and an intermediate sheet interposed between the surface sheet and the absorbing member are bonded at a plurality of dot-shaped bonding portions,
By making the density of the joint provided in a predetermined region on the center side in the longitudinal direction of the surface member lower than the density of the joint provided in a region outside the predetermined region in the longitudinal direction , An absorbent article , wherein a thickness of the surface member in a predetermined region is larger than a thickness in a region outside the predetermined region . The absorbent article according to claim 1,
The said surface sheet has the vertical recessed part continued along the longitudinal direction of the said absorption member in the area | region outside the said predetermined area | region in the surface of the surface side, The absorbent article characterized by the above-mentioned. The absorbent article according to claim 1 or 2,
Absorbing said intermediate sheet, the outside region of the predetermined region definitive on the surface of the absorbent member, characterized in that it has a transverse recess continuing along a direction crossing the longitudinal direction of the absorbent member Sex goods. The absorbent article according to claim 1 ,
The top sheet has a vertical recess that is continuous in the longitudinal direction of the absorbent member in a region outside the predetermined region on the surface side surface,
The intermediate sheet has a lateral recess continuous in a crossing direction intersecting a longitudinal direction of the absorbing member in a region outside the predetermined region on the surface on the absorbing member side,
The said junction part is formed in the position where the said vertical recessed part and the said horizontal recessed part cross | intersect, The absorbent article characterized by the above-mentioned. The absorbent article according to any one of claims 1 to 4,
The top sheet and the intermediate sheet are nonwoven fabrics containing hot-melt fibers,
The said bonded part is heat-welded, The absorbent article characterized by the above-mentioned. An absorbent article according to any one of claims 1 to 5,
Density before Symbol junction absorbent article, characterized in that the number of joints per unit area.

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