JPWO2017002217A1 - Absorbent articles with different slit positions before and after the waist - Google Patents

Abstract

Provided is an absorbent article formed by shifting the position in the longitudinal direction where a cut is formed between a ventral-side exterior member and a back-side exterior member.
The absorbent article (100) is disposed along the abdominal exterior member (104) along the lateral direction, and is disposed along the lateral direction, with the lateral ends of the abdominal exterior member (104) in the lateral direction. A back side exterior member (106) connected to the end, and the abdominal side exterior member (104) and the back side exterior member (106) are respectively a non-skin side non-skin side sheet (118), Skin side sheet on the skin side
(120) and the rubber thread provided between the non-skin side sheet (118) and the skin side sheet (120)
(140), and at least the non-skin side sheet (118) of the ventral-side exterior member (104), a plurality of linear ventral cuts (150) are formed in a row, and the back-side exterior member ( 106) at least on the non-skin side sheet (118), a plurality of linear dorsal cuts (150) are formed in rows, and in the vertical direction, ventral cuts (150) are formed in rows. The dorsal cut (150) does not exist at the position where the dorsal cut is present, and the ventral cut (150) does not exist at the position where the dorsal cuts (150) are formed in a row in the vertical direction.

Description

  The present invention relates to an absorbent article.

  Absorbent articles such as disposable diapers are usually manufactured as a combination of an outer layer body and an absorbent main body. The outer layer body is generally formed by laminating an inner exterior member and an outer exterior member. For such absorbent articles, the user has been required to have a feeling of use that is not different from that of underwear. Traditional disposable diaper materials used were paper and cotton, but in response to such demands, in recent years, by using devices such as using superabsorbent polymers and non-woven fabrics, it has a performance superior to cloth diapers. It has become.

  Here, non-woven fabrics that are bonded randomly do not have directionality in strength and elongation, are mass-produced and inexpensive, can easily combine multiple materials, and can easily change thickness and voids However, it has the disadvantages that the strength is inferior to that of a woven fabric and it is difficult to produce a transparent material. In order to make up for such drawbacks, in order to improve the material strength of absorbent articles made of nonwoven fabric, the thickness of the material itself is increased, or a plurality of materials are stacked in the thickness direction. Often done. However, in the absorbent article having improved material strength in this way, the air permeability is lowered. On the other hand, in order to improve the air permeability of the absorbent article, for example, when one or a plurality of slits (hereinafter referred to as cuts) are formed along the lateral direction, the material strength of the absorbent article decreases. That is, air permeability and material strength are in a trade-off relationship.

  From such a point of view, an absorptivity that can improve material strength while attempting to lower the humidity and temperature inside the absorbent article by providing slits on the surface of the absorbent article and ensuring ventilation through the slit. An article is desired.

  For example, Patent Document 1 teaches a pants-type diaper 10 in which a slit portion 38 is formed. As shown in FIG. 13, the pant-type diaper 10 is formed using an exterior body 11 including an abdominal side portion 21 and a back side portion 23. The exterior body 11 is configured by laminating and bonding an outer layer material 33 (first sheet material) on the non-skin contact surface side and an inner layer material 31 (second sheet material) on the skin contact surface side, both of which are made of nonwoven fabric or the like. Has been. A plurality of horizontally long slit portions 38 are partially formed in the outer layer material 33 along the width direction (X direction) of the pants-type diaper 10. A plurality of slit portions 38 are arranged in the body height direction (Y direction) to form a slit region 71. The slit portion 38 is formed as a portion obtained by cutting the first sheet material forming the outer layer material 33 into an elongated shape in the width direction.

JP, 2014-221112, A

  However, in the pant-type diaper 10 of Patent Document 1, the position in the vertical direction (Y direction) where the cut 38 is formed in the ventral part 21 is the vertical position where the cut 38 is formed in the dorsal part 23. Is consistent with Therefore, when it goes around the trunk, the cut 38 is formed in the back side 23 at the position where the cut 38 is formed in the abdominal side 21, and depending on the position in the vertical direction, the cut 38 is formed. There is a place where the number of materials is small. This may lead to breakage of the absorbent article due to the force to tear the absorbent article along the lateral direction, which occurs when the wearer tries to lift the absorbent article with both hands.

  In order to solve the above-described problems, the present invention is directed to an absorbent article formed by shifting the position in the longitudinal direction where a cut is formed between the ventral exterior member and the back exterior member. It is.

That is, the main invention for achieving the above object is:
An absorbent article having a longitudinal direction, a transverse direction and a thickness direction orthogonal to each other,
A ventral exterior member disposed along the lateral direction;
A backside exterior member disposed along the lateral direction,
The ventral side exterior member and the back side exterior member are provided between the non-skin side non-skin side sheet, the skin side skin side sheet, and the non-skin side sheet and the skin side skin side sheet, respectively. Provided with rubber thread,
A plurality of linear ventral cuts are formed in a row on at least the non-skin side sheet of the ventral exterior member,
A plurality of linear dorsal cuts are formed in a row on at least the non-skin side sheet of the dorsal exterior member,
In the vertical direction, the dorsal cut is not present at the position where the ventral cut is formed in a row,
In the longitudinal direction, the abdominal cut is not present at a position where the dorsal cut is formed in a row.

  According to the absorbent article which concerns on this invention, the possibility of a fracture | rupture of an absorbent article can be reduced.

  In addition, the problems disclosed by the present application and the solutions thereof will be clarified by the description in the column of the embodiment for carrying out the invention and the description of the drawings.

1 is a perspective view of an absorbent article 100 according to the present invention, such as a three-piece type disposable diaper. FIG. It is the schematic plan view which looked at the absorptive article 100 of the deployment state from the skin side. 3A is a cross-sectional view taken along line AA and CC in FIG. 2. 3B is a cross-sectional view taken along the line BB in FIG. It is VI-VI sectional drawing in FIG. It is a figure which shows the positional relationship of the cut | interruption 150 and the elastic member 140 of the abdominal side exterior member 104, and the cut | interruption 150 and the elastic member 140 of the back | dorsal side exterior member 106. FIG. It is a figure which shows the other example of the method of forming the cut | interruption 150 in the abdominal side exterior member 104 and the back side exterior member 106. FIG. It is a figure which shows the further another example of the method of forming the cut | interruption 150 in the ventral | abdominal exterior member 104 and the back | dorsal exterior member 106. FIG. It is a figure which shows another example of how to form the cut | interruption 150 in the ventral | abdominal exterior member 104 and the back | dorsal exterior member 106. FIG. It is a figure which shows another example of how to form the cut | interruption 150 in the ventral | abdominal exterior member 104 and the back | dorsal exterior member 106. FIG. It is a figure which shows another example of how to form the cut | interruption 150 in the ventral | abdominal exterior member 104 and the back | dorsal exterior member 106. FIG. It is a figure which shows another example of how to form the cut | interruption 150 in the ventral | abdominal exterior member 104 and the back | dorsal exterior member 106. FIG. It is a figure which shows another example of how to form the cut | interruption 150 in the ventral | abdominal exterior member 104 and the back | dorsal exterior member 106. FIG. 1 is a perspective view of a conventional diaper-type pant 10. FIG.

  While the invention is susceptible to various modifications and alternative forms, exemplary embodiments of the invention are shown by way of example in the drawings and are herein described in detail. However, the description herein of exemplary embodiments is not intended to limit the invention to the particular forms disclosed, but is intended to be construed as limiting the invention as defined by the claims. Includes all modifications, equivalents, and alternatives falling within the spirit and scope.

  At least the following matters will become apparent from this specification and the accompanying drawings.

An absorbent article having a longitudinal direction, a transverse direction and a thickness direction orthogonal to each other,
A ventral exterior member disposed along the lateral direction;
A backside exterior member disposed along the lateral direction, the lateral end of which is connected to the lateral end of the ventral exterior member,
The ventral side exterior member and the back side exterior member are provided between the non-skin side non-skin side sheet, the skin side skin side sheet, and the non-skin side sheet and the skin side skin side sheet, respectively. Provided with rubber thread,
A plurality of linear ventral cuts are formed in a row on at least the non-skin side sheet of the ventral exterior member,
A plurality of linear dorsal cuts are formed in a row on at least the non-skin side sheet of the dorsal exterior member,
In the vertical direction, the dorsal cut is not present at the position where the ventral cut is formed in a row,
In the longitudinal direction, the abdominal cut is not present at a position where the dorsal cut is formed in a row.

  According to such an absorbent article, since the ventral cut and the dorsal cut are not formed at the same position in the longitudinal direction, air permeability can be achieved by forming a cut in the ventral exterior member and the back exterior member. While maintaining, material strength can be secured.

Such an absorbent article,
In the vertical direction, the rubber thread of the backside exterior member is present at a position where the ventral cuts are formed in a row, and in the vertical direction, the dorsal cuts are formed in a row. In the position where the rubber thread of the ventral exterior member is present,
It is desirable to satisfy at least one of the conditions.

  The thread rubber of the other member is present at the position where the cut of either the ventral side exterior member or the back side exterior member is formed, and the thread rubber of the other member It acts as a reinforcing member for the portion formed in a row. Therefore, according to such an absorbent article, material strength can be further increased.

Such an absorbent article,
The vertical interval of the ventral cut or the dorsal cut formed in a row is different according to the position in the vertical direction,
The vertical interval of the rubber thread varies depending on the position in the vertical direction, and the rubber bands are arranged one by one between the two ventral cuts or the dorsal cuts adjacent in the vertical direction. It is desirable.

  When the pitch of the rubber thread is different depending on the position in the vertical direction, the interval between the cuts adjacent to each other in the vertical direction differs accordingly, and the rubber thread one by one between two cuts adjacent in the vertical direction. Is arranged. Therefore, according to such an absorbent article, in addition to the effect of increasing the material strength, each cut can be reliably opened.

Such an absorbent article,
The abdominal exterior member and the dorsal exterior member are respectively overlapped with the absorbent main body in the longitudinal direction and the lateral direction, the inner overlap region overlapping with the absorbent main body in the longitudinal direction, and overlapped in the lateral direction. A side region that does not overlap with the absorbent main body in the vertical direction and does not overlap in the horizontal direction, and an inner upper region that does not overlap with the absorbent main body in the vertical direction and overlaps in the horizontal direction And
The total length of the ventral cut per unit length in the vertical direction of the armpit area and the inner upper area is greater than the total length of the ventral cut per unit length of the armpit area. Is also small,
Or
The total length of the dorsal cut per unit length in the vertical direction of the armpit area and the inner upper area is greater than the total length of the dorsal cut per unit length of the armpit area. It is desirable to be smaller.

  The region overlapping with the absorbent main body in the longitudinal direction has a large rigidity against the force to tear the absorbent article along the lateral direction. Therefore, according to such an absorbent article, ventilation is ensured by forming a large number of slits in the region overlapping with the absorbent main body in the vertical direction, and a small number of slits are provided in the region not overlapping with the absorbent main body in the vertical direction. By forming it, it is possible to ensure material strength while ensuring ventilation.

Such an absorbent article,
The total length of the ventral cut of the ventral exterior member is preferably smaller than the total length of the dorsal cut of the dorsal exterior member.

  According to such an absorbent article, comfort at the time of wearing can be improved by forming more cuts on the back side where the wearer of the absorbent article easily sweats and ensuring ventilation.

Such an absorbent article,
The abdominal exterior member and the dorsal exterior member are respectively overlapped with the absorbent main body in the longitudinal direction and the lateral direction, the inner overlap region overlapping with the absorbent main body in the longitudinal direction, and overlapped in the lateral direction. A side region that does not overlap with the absorbent main body in the vertical direction and does not overlap in the horizontal direction, and an inner upper region that does not overlap with the absorbent main body in the vertical direction and overlaps in the horizontal direction And
It is desirable that no cut is formed in the inner upper region of the ventral exterior member.

  The portion between the absorbent main body and the waistline opening of the absorbent article of the abdominal exterior member, particularly the inner upper region, is a portion that is easily broken along the lateral direction when the wearer pulls up the absorbent article. The same applies to the back side exterior member, but the wearer of the absorbent article is more likely to sweat on the back side, so the portion of the back side exterior member needs to ensure air permeability, and the wearer The wearer can move more easily when the back side exterior member is cut when the back is bent forward. Therefore, according to such an absorbent article, by not forming a cut in the inner upper region of the abdominal exterior member, the possibility of breakage can be reduced and the material strength can be ensured.

Such an absorbent article,
It is desirable that no cut is formed in the inner upper region and the side region of the ventral exterior member.

  The portion between the absorbent main body and the waistline opening in which the ventral exterior member does not overlap with the absorbent main body in the vertical direction, that is, the inner upper region and the side region of the ventral exterior member are absorbent by the wearer. This is a portion that is easy to break along the lateral direction when the article is pulled up. The same applies to the back side exterior member, but the wearer of the absorbent article is more likely to sweat on the back side, so the portion of the back side exterior member needs to ensure air permeability, and the wearer The wearer can move more easily when the back side exterior member is cut when the back is bent forward. Therefore, according to such an absorbent article, by not forming a cut in the inner upper region and the side region of the abdominal exterior member, it is possible to reduce the possibility of breakage and secure material strength. it can.

Such an absorbent article,
In at least one member of the ventral exterior member and the back exterior member, an end portion of the non-skin side sheet is folded back to the skin side sheet side and joined to the skin side sheet on the skin side. Is desirable.

  According to such an absorbent article, it is possible to increase the strength of the periphery of the waistline opening by increasing the number of laminated layers that are easily broken along the lateral direction when the wearer pulls up the absorbent article. .

Such an absorbent article,
In at least one member of the abdominal exterior member and the back exterior member, it is desirable that a reinforcing sheet is provided on the skin side of the longitudinal end portion of the skin side sheet.

According to such an absorbent article, it is possible to increase the strength of the periphery of the waistline opening by increasing the number of laminated layers that are easily broken along the lateral direction when the wearer pulls up the absorbent article. .
=== This Embodiment ===
FIG. 1 is a perspective view of an absorbent article 100 according to the present invention, such as a three-piece type disposable diaper.

  Moreover, FIG. 2 is the schematic plan view which looked at the absorbent article 100 of the unfolded state from the non-skin side.

  As shown in FIGS. 1 and 2, the absorbent article 100 has a vertical direction, a horizontal direction, and a thickness direction that are orthogonal to each other. The absorbent article 100 includes an absorbent main body 102 that covers the crotch of the wearer and absorbs fluid such as excrement, an abdominal exterior member 104 that covers the abdomen of the wearer, and a back that covers the back of the wearer. Side exterior member 106.

  The absorptive main body 102 is arranged so that its longitudinal direction is along the vertical direction, and the abdominal exterior member 104 is arranged so that its longitudinal direction is along the lateral direction. It is piled up from the non-skin side in the thickness direction and fixed to the end of the. The back side exterior member 106 is disposed as a separate member having a larger area than the abdominal side exterior member 104 so that its longitudinal direction is along the lateral direction, and is thick at the other end in the longitudinal direction of the absorbent main body 102. It is overlapped and fixed from the non-skin side in the vertical direction.

2, the abdominal exterior member 104 and the back exterior member 106 are arranged in parallel with a space between each other, and the absorbent main body therebetween. 102, the end portions 102ea and 102eb in the longitudinal direction of the absorbent main body 102 are joined and fixed to the nearest ventral-side exterior member 104 and back-side exterior member 106, respectively, and the external shape is abbreviated in plan view. It has an H shape. Then, from this state, the absorbent main body 102 is folded in half with the substantially central portion 102ax in the longitudinal direction as the folding position, and the abdominal exterior member 104 and the back exterior member 106 that face each other in this folded state However, when connected at the portions 104e and 106e (lateral end portions 104e and 106e) that should contact the wearer's flank, the abdominal exterior member 104 and the back exterior member 106 are connected in a ring shape. Thus, the absorbent article 100 in a worn state in which the waist opening AP _wc and the pair of leg openings AP _tc as shown in FIG. 1 are formed is obtained.

  Various connection structures can be adopted as the connection structure between the abdominal exterior member 104 and the back exterior member 106. For example, if a non-removable connection structure such as welding is used, a pants-type absorbent article 100 can be obtained, and if a detachable connection structure such as a fastening tape member (not shown) is used, an open-type absorbent article 100 is provided. Can be. In this example, the former connection structure is used, and thereby the absorbent article 100 is a pants-type.

  As shown in FIGS. 2 and 3B, the absorbent main body 102 includes an absorbent core 108 obtained by molding liquid absorbent fibers such as pulp fibers into a predetermined shape such as a substantially hourglass shape in plan view, and the absorbent core 108. And a back sheet member 112 that covers the absorbent core 108 from the non-skin side and forms the exterior of the absorbent main body 102. The absorbent core 108 may contain liquid absorbent granules such as a superabsorbent polymer, or may contain liquid absorbent materials other than liquid absorbent fibers and liquid absorbent granules. The absorbent core 108 may be covered with a liquid permeable sheet such as tissue paper (not shown).

  The top sheet member 110 is a liquid-permeable nonwoven fabric having a larger planar size than the absorbent core 108. The back sheet member 112 is also a sheet having a larger plane size than the absorbent core 108. For example, a two-layer in which a liquid-impermeable leak-proof sheet 112a such as polyethylene or polypropylene and an exterior sheet 112b such as a nonwoven fabric are bonded together. The sheet member 112 having a structure can be used. In a state where the absorbent core 108 is sandwiched between the back sheet member 112 and the top sheet member 110, the leakproof sheet 112a and the top sheet of the back sheet member 112 are portions that protrude outward from the four sides of the absorbent core 108. The member 110 is bonded in a frame shape, and thereby the absorbent main body 102 is formed.

  As shown in FIGS. 1, 2, and 3B, the three-dimensional gather LCG and the leg gathers LG may be formed by the exterior sheet 112b. The three-dimensional gather LCG refers to leakage prevention wall portions LCG that are provided upright at the respective lateral ends of the top sheet member 110, and the leg-hole gathers LG are the respective leg-hole openings AP of the absorbent article 100._tcRefers to the stretchable part LG formed in The dimension of the exterior sheet 112b in the horizontal direction is sufficiently larger than that of the leak-proof sheet 112a, that is, the exterior sheet 112b protrudes from the both sides of the leak-proof sheet 112a in the lateral direction. The protruding portion 112bf is folded back to the center in the lateral direction with the position forming the lateral end portion 102es of the absorbent main body 102 as the folded position, and thread rubber or the like is formed along the longitudinal direction in the vicinity of the folded position. The elastic member 114 is fixed in an extended state in the vertical direction, and a leg-hole gather LG is formed. The folded portion 112bg further extends toward the center in the lateral direction, and is joined to the lateral end at a position covering the lateral end of the topsheet member 110. The portion joined to the lateral end is the base end LCG of the three-dimensional gather LCG._bFunctions as the proximal LCG_bThe distal end portion in the lateral direction is the free end portion LCG_fIt is possible to stand up from the top sheet member 110. Free end part LCG _fAn elastic member 116 such as rubber thread is fixed in the longitudinal direction in the longitudinal direction at the front end portion. Therefore, the elastic main body 102 is bent in the vertical direction so that the topsheet member 110 side is the inner peripheral side by the vertical contraction of the elastic member 116. End part LCG_fContracts in the longitudinal direction and rises from the surface sheet member 110, whereby the free end portion LCG_fFunctions as a three-dimensional gather LCG.

  A liquid permeable sheet such as tissue paper may be interposed as a second sheet between the top sheet member 110 and the absorbent core 108 or between the back sheet member 112 and the absorbent core 108.

  Each of the ventral exterior member 104 and the back exterior member 106 can be formed by using a sheet member having a substantially rectangular shape in plan view made of a flexible sheet such as a nonwoven fabric. As shown in FIGS. 3A and 3B, the non-skin-side non-skin side sheet 118 and the non-skin-side sheet 120 are joined together to form the abdominal-side exterior member 104 and the back-side exterior member 106. The non-skin side sheet 118 and the skin side sheet 120 do not have to be the same size as each other. For example, the non-skin side sheet 118 and the skin side sheet 120 may be configured as shown in FIG. 4 showing a VI-VI cross-sectional view in FIG. . That is, the sizes in the vertical direction may be different from each other so that the non-skin side sheet 118 positioned on the non-skin side in the thickness direction protrudes from the skin side sheet 120 to the end side in the vertical direction. In this case, as shown in FIG. 4, in the non-skin side sheet 118, a portion 118 f that protrudes from the skin side sheet 120 in the vertical direction is a position in the vicinity of the vertical edge of the skin side sheet 120. Is folded back to the center in the vertical direction. The folded portion 118g is overlapped and joined to the skin side sheet 120. At the time of folding, a part of the longitudinal ends 102ea and 102eb of the absorbent main body 102 may be covered from the skin side of the absorbent main body 102 with the folded portion 118g.

  As shown in FIGS. 1 and 2, the abdominal exterior member 104 and the back exterior member 106 have inner overlapping regions 132be and 132re that overlap with the absorbent main body 102 in the longitudinal direction and the lateral direction, respectively. Armpit regions 134be and 134re that overlap in the vertical direction and do not overlap in the horizontal direction, armpit regions 136be and 136re that do not overlap in the vertical direction and do not overlap in the horizontal direction, and the absorbent main body 102 And upper inner regions 138be and 138re that do not overlap in the vertical direction but overlap in the horizontal direction.

  The abdominal exterior member 104 and the back exterior member 106 are inner overlapping regions 132be and 132re, respectively, while covering the longitudinal ends 102ea and 102eb of the absorbent main body 102 from the non-skin side of the absorbent main body 102, respectively. Inner overlapping regions 132be and 132re of the abdominal exterior member 104 and the back exterior member 106 are overlapped and joined to the end portions 102ea and 102eb.
The superposition of the absorbent main body 102 on the inner overlapping regions 132be and 132re of the abdominal exterior member 104 and the back exterior member 106 is performed without overlapping the absorbent main body 102 on the inner upper regions 138be and 138re. Thus, the inner upper regions 138be and 138re in the abdominal exterior member 104 and the back exterior member 106 become strip-shaped portions that do not overlap with the absorbent main body 102 in the longitudinal direction over the entire length in the lateral direction. These inner upper regions 138be and 138re are the waistline openings AP of the absorbent article 100._wcIn these inner upper regions 138be and 138re, the elastic member 140 is continuously provided over substantially the entire length in the lateral direction in the inner upper regions 138be and 138re. Also, the vertical size L of the inner upper regions 138be and 138re where the absorbent main body 102 does not overlap._beAnd L_re, The back side exterior member 106 is made larger than the ventral side exterior member 104 (L_re> L_be) As a whole, the absorptive main body 102 is disposed so as to be biased toward the ventral-side exterior member 104 rather than the back-side exterior member 106. Thereby, the smooth absorbability of fluids, such as excrement, is ensured. Alternatively, the size L_beAnd L_reReverse the magnitude relationship of (L_re<L_be) Or size L_beAnd L _reAre equal to each other (L_re= L_be)

  In the absorbent article 100 according to the present invention, a plurality of elastic members 140 such as thread rubber are provided between the non-skin side sheet 118 and the skin side sheet 120 along the lateral direction. The elastic member 140 is a non-skin side in a state where it is stretched in a lateral direction by an adhesive region formed by adhering (applying) an adhesive such as a hot melt adhesive with a predetermined basis weight (weight per unit area). It is fixed to one or both of the sheet 118 and the skin side sheet 120. The formation of the adhesive region may be performed by attaching an adhesive to the non-skin side sheet 118 and the skin side sheet 120, or may be performed by attaching an adhesive to the elastic member 140 side. May be done by both.

  As shown in FIG. 2, in the abdominal exterior member 104 and the back exterior member 106, the pair of inner adhesive regions 142 have both lateral directions with respect to the longitudinal ends 102 ea and 102 eb of the absorbent main body 102. It is formed so as to overlap with the elastic member 140 on the inner side. In the inner adhesive region 142, the adhesive is applied to the entire region using a coating means such as spiral coating, control seam coating, or full surface coating by a slot coater.

  In the absorbent article 100 according to the present invention, at least a part of the elastic member 140 is cut to adjust the lateral contraction force.

  The elastic member 140 arranged in the laterally extended state is cut by a cutter or the like between the pair of inner adhesive regions 142, for example, at the position of the center line CL. However, the cut portion of the elastic member 140 is not limited to the position of the center line CL, and may be cut at a position deviated from the center line CL, or the elastic member 114 for the leg gathers LG and the three-dimensional gather LCG. It may be cut at a plurality of locations between the elastic members 116 for use. Further, the elastic member 140 may be cut in a plurality of cutting steps instead of being cut in a single cutting step (cutting operation). The cut elastic member 140 contracts from the cut portion to the outside in the lateral direction of the elastic member 114 for the leg gathers LG and the elastic member 116 for the three-dimensional gather LCG. Hereinafter, this operation is referred to as “cutback”.

  Of the elastic member 140, the expansion ratio of the portion disposed in the region overlapping the absorbent main body 102 (the region where the elastic member 140 is cut back) is the expansion magnification of the elastic member 140 in the other region or the other elastic member. Higher than. This is because when the expansion ratio of the elastic member 140 is low, cutback may be insufficient. Here, “extension ratio” means the degree of extension when each elastic member is fixed to a sheet or the like in an extended state. The higher the extension ratio, the greater the elastic member can express a contracting force. it can. For example, when the expansion ratio is low, after the elastic member 140 is cut at the center line CL, the elastic member 140 does not sufficiently contract, and a part of the elastic member 140 is the elastic member 114 for the leg gathers LG and the three-dimensional gather LCG. There is a possibility that the elastic member 116 may remain inside the horizontal direction. Therefore, by making the expansion ratio of the elastic member 140 in the region overlapping with the absorbent main body 102 higher than the expansion ratio of other elastic members or the like, the contraction due to cutback is appropriately generated. Accordingly, it is possible to suppress a part of the elastic member 140 contracted in the lateral direction from remaining inside the elastic member 114 for the leg gathers LG and the elastic member 116 for the three-dimensional gather LCG in the lateral direction.

  Thus, by precisely controlling the position where the elastic member 140 is contracted and cutting it back, it is possible to adjust the tightening force around the waist with high accuracy, and the fit of the absorbent article 100 can be further improved. . Moreover, since the elastic member 114 for the leg gathers LG and the elastic member 116 for the three-dimensional gather LCG and the elastic member 140 do not intersect with each other due to the cutback, the mutual contraction force is less likely to act, and the absorbency When the article 100 is worn, the wearer can easily move the legs and the like.

  Returning to FIG. 1 and FIG. 2, in the abdominal side exterior member 104 and the back side exterior member 106 formed by laminating the non-skin side sheet 118 and the skin side sheet 120, a plurality of horizontally long absorbent articles 100 are formed. A cut 150 is formed in the armpit areas 134be and 134re and the armpit areas 136be and 136re. A plurality of the cut lines 150 are formed in a row at a predetermined interval (slit pitch) along the lateral direction of the absorbent article 100. Referring to FIG. 2, for example, in the armpit regions 134be and 134re, the length of each cut (slit length) is 3 [mm], and the slit pitch is 8 [mm], and four per row. A cut 150 is formed. In the side regions 136be and 136re, five cuts 150 having a slit length of 2 [mm] are formed for each row with a slit pitch of 8 [mm]. A plurality of the cuts 150 in one row are formed in the vertical direction at a predetermined interval according to the interval between the elastic members 140 in the vertical direction. The cut 150 is a portion obtained by finely cutting at least one of the non-skin side sheet 118 and the skin side sheet 120. The linear cut 150 is preferably 5 mm to 15 mm in length. The cut 150 can be easily recognized by setting the slit length to 5 [mm] or more, and by setting the slit length to 15 [mm] or less, the material can be prevented from rolling up. The cut 150 may be a linear cut or may be a notched portion with a width. Considering the strength of the member, it is preferable to have a linear cut. The cut 150 may be formed in at least one of the abdominal exterior member 104 and the back exterior member 106, and is similarly formed in the abdominal exterior member 104 and the back exterior member 106. There may be. Further, the cut 150 may be formed on at least one of the non-skin side sheet 118 and the skin side sheet 120, and is similarly formed on the non-skin side sheet 118 and the skin side sheet 120. There may be.

As shown in FIG. 2, the underarm regions 134be and 134re and the underarm regions 136be and 136re, which are cut, have a width W in the lateral direction and a width M in the lateral direction. The inner overlapping regions 132be and 132re and the inner upper regions 138be and 138re are located on both sides. Among the above-mentioned regions having a width W, the side outside beside the joint base portion near the side seal region located within a distance W ₂ from each end 104e and 106e in the lateral direction of the ventral side outer member 104 and the back side outer member 106 A cut 150 is formed in the inner region having the width of W ₁ excluding the portion W ₂ (hereinafter, this region is referred to as “both side slit region SSA”). Further, a side region 136be and 136Re, and the inner upper region 138be and 138Re, to form a waist-opening _{AP wc} of the absorbent article 100, the longitudinal direction of each end of the ventral side outer member 104 and the back side outer member 106 from parts, in the longitudinal direction has a length _{H 1,} and the underarm areas 134be and 134Re, and the inner overlapping area 132be and 132Re, to form a leg opening _{AP tc} of the absorbent article 100, the ventral side outer from each end of the longitudinal member 104 and the back side outer member 106 has a length H ₂ in the vertical direction. That is, the length H in the vertical direction of the ventral exterior member 104 and the back exterior member 106 is represented by H = H ₁ + H ₂ . From each end of the inner overlap area 132be and 132re leg-openings _{AP tc} side of the portion having a length _{H 2} in the vertical direction, the portions that are within a distance _{H 20} from the end of the The cutback process is performed, and the elastic member 140 does not exist in the part of the absorbent core 108. Of underarm area 134be and 134Re, to form a leg opening _{AP tc} of the absorbent article 100, the longitudinal portion which is within the distance _{H 20} from each end of the ventral side outer member 104 and the back side outer member 106 Is formed with a long cut 150. The remaining of the underarm area 134be and 134Re, the longitudinally and has a length _{H 21} moiety, short cut 150 is formed. The vertical lengths H ₂ of the armpit regions 134be and 134re and the inner overlap regions 132be and 132re are represented by H ₂ = H ₂₀ + H ₂₁ . Short cuts 150 are formed in the side regions 136be and 136re.

The inner overlapping regions 132be and 132re and the inner upper regions 138be and 138re having a width M in the horizontal direction are a region where the cut 150 is not formed (hereinafter, this region is referred to as a “non-slit region NSA”). It has become. Further, the side region outer portion W _{2 in} the vicinity of the side seal region is a non-slit region over the entire length H of the abdominal exterior member 104 and the back exterior member 106.

  As described above, the slit regions SSA on both sides of the abdominal exterior member 104 and the back exterior member 106 are arranged in the lateral direction at intervals with the non-slit region NSA interposed therebetween. In the non-slit region NSA, the abdominal exterior member 104 or the back exterior member 106 and the absorbent main body 102 overlap in the longitudinal direction and the lateral direction. It will be the part you have. The lateral length M of the non-slit area NSA of the ventral exterior member 104 and the back exterior member 106 takes into account the action of the both-side slit area SSA and the bonding strength between the non-skin side sheet 118 and the skin side sheet 120. Can be set as appropriate.

  In the laminated region of the non-skin side sheet 118 and the skin side sheet 120, both the sheet members are joined and integrated, and has stretchability in the waistline direction of the absorbent article 100, that is, in the lateral direction. Both side slit regions SSA of the non-skin side sheet 118 are joined to the inner layer material 31 and have elasticity. In the both-side slit area SSA, the non-skin side sheet 118 and the skin side sheet 120 are joined in a planar shape over the length H in the longitudinal direction and have elasticity. This stretchability is further enhanced by interposing the elastic member 140 between the non-skin side sheet 118 and the skin side sheet 120. In this case, the elastic member 140 is sandwiched between the non-skin-side sheet 118 and the skin-side sheet 120 in an expanded state, and thereby has elasticity. Alternatively, the non-skin side sheet 118 and / or the skin side sheet 120 may be configured by using a stretchable material.

  In the both-side slit region SSA, the gap between the two edges constituting the cut 150 is widened by the lateral contraction of the stretchable ventral exterior member 104 and the backside exterior member 106, and the ventral exterior member 104 and the backside exterior It becomes a vent of the member 106. In addition, when the wearer extends or contracts the abdominal exterior member 104 and the back exterior member 106 due to movement of the body after the absorbent article 100 is attached, the vents open and close in accordance with the movement, and the interior of the absorbent article 100 Promotes moisture discharge and further enhances air permeability. Further, since there are a plurality of cut lines 150, the both-side slit area SSA of the non-skin-side sheet 118 is more easily deformed than the non-slit area NSA and is excellent in flexibility. Further, due to the stretchability, the individual cuts 150 are twisted to make fine wrinkles, and the waist area becomes soft.

A plurality of elastic members 140 are arranged between the non-skin-side sheet 118 and the skin-side sheet 120 in a laterally extended state, spaced apart in the vertical direction, avoiding the cuts 150 formed in a row, and fixed by bonding. Has been. That is, the elastic member 140 is firmly sandwiched and fixed between the non-skin side sheet 118 and the skin side sheet 120 without being exposed to the outside from the cut 150. As a result, the elastic member 140 provides stretchability in the waist direction, that is, in the lateral direction, with the non-skin side sheet 118 and the skin side sheet 120 forming the abdominal side exterior member 104 and the back side exterior member 106 as an integral body. Elastic member 140, using a hot melt adhesive as described above, not only the joint on both sides slit area SSA, the inner overlap area 132be and 132re and the side outside lateral portion _{W 2} non-skin side sheet 118 and the skin side It is preferable that the sheet 120 is continuously joined in a planar shape. Thereby, not only hot melt adhesion applied to the elastic member 140 itself but also the sheet surfaces of the non-skin-side sheet 118 and the skin-side sheet 120 can be used to prevent the rubber from coming off.

  Here, FIG. 5 is a diagram illustrating a positional relationship between the cut 150 and the elastic member 140 of the ventral-side exterior member 104 and the cut 150 and the elastic member 140 of the back-side exterior member 106.

  As described above, the absorbent article 100 includes the absorbent main body 102 having the absorbent core 108, the ventral-side exterior member 104, and the back-side exterior member 106. The abdominal exterior member 104 and the back exterior member 106 include a non-skin side sheet 118, a skin side sheet 120, and an elastic member 140 provided between the non-skin side sheet 118 and the skin side sheet 120, respectively. Including. A plurality of linear cuts 150 are formed in a row in the lateral direction on at least the non-skin-side sheet 118 of the ventral-side exterior member 104, and a plurality of linear cuts 150 are provided on at least the non-skin-side sheet 120 of the back-side exterior member 106. Are formed in rows in the horizontal direction. As a feature of the absorbent article 100 according to the present embodiment, as shown in the XX cross-sectional view, a plurality of cuts 150 are formed in rows in the ventral-side exterior member 104 in a vertical position. In the backside exterior member 106, the cut 150 does not exist. On the other hand, there are no cuts 150 in the ventral exterior member 104 at vertical positions where the plurality of cuts 150 are formed in a row in the back exterior member 106.

  With such a configuration of the absorbent article 100, the ventral cut 150 and the dorsal cut 150 are not formed at the same vertical position in the vertical direction. By forming 150, material strength can be secured while maintaining air permeability.

  Further, as shown in the XX cross-sectional view, the longitudinal position of the dorsal exterior member 106 is equal to the longitudinal position where the plurality of cuts 150 are formed in a row in the ventral exterior member 104. The elastic member 140 of the backside exterior member 106 may be present. The elastic member 140 of the abdominal exterior member 106 is located at the longitudinal position of the abdominal exterior member 104, which is equal to the longitudinal position where the plurality of cuts 150 are formed in a row in the back exterior member 106. May exist.

  With such a configuration of the absorbent article 100, the elastic member 140 of the other member is present at the position where the cut 150 of either the abdominal exterior member 104 or the back exterior member 106 is formed. Thus, the elastic member 140 of the other member acts as a reinforcing member for the portion where the cut lines 150 of the one member are formed in a row. Therefore, the material strength can be further increased.

  The vertical interval between the row-shaped cut lines 150 formed at intervals in the horizontal direction may vary depending on the position in the vertical direction of the absorbent article 100, for example. It is preferable that the vertical intervals of the members 140 are different depending on the positions in the vertical direction, and the elastic members 140 are arranged one by one between two rows of cuts 150 adjacent in the vertical direction.

  With such a configuration of the absorbent article 100, when the pitch of the elastic members 140 is different depending on the position in the vertical direction, the interval between the cuts 150 adjacent in the vertical direction is different accordingly, and in the vertical direction Since the elastic members 140 are arranged one by one between two adjacent cuts 150, the strength of the material can be increased and each cut 150 can be opened reliably.

  Here, the wearer wearing the absorbent article 100 generally tends to sweat more on the back side than on the abdomen side. Therefore, it is desirable to make the density of the cuts 150 in the backside exterior member 106 larger than the density of the cuts 150 in the ventral side exterior member 104. In addition, since the materials overlap in the thickness direction in the inner overlapping regions 132be and 132re, the region composed of the armpit regions 134be and 134re overlapping the inner overlapping region in the vertical direction and the inner overlapping regions 132be and 132re is In addition, the absorbent article 100 has a large rigidity against a stress that attempts to shear the absorbent article 100 along the lateral direction. Accordingly, it is desirable to make the density of the cuts in the armpit regions 134be and 134re larger than the density of the cuts in the inner upper regions 138be and 138re and the armpit regions 136be and 136re.

Therefore, the plurality of cuts 150 formed as shown in FIG. 2 are the sum of the lengths of the cuts 150 in the side region 136be of the ventral-side exterior member 104 being L (be) bus , and the cuts 150 in the inner upper region 138be. of the total length L (be) mus, when the total length of the slit 150 in the underarm area 134be and L (be) bls, {( L (be) bus + L (be) mus) / H 1} satisfy <{L (be) bls / H 2}. That is, in the ventral exterior member 104, the total length of the cuts 150 per unit length in the vertical direction of the armpit region 136be and the inner upper region 138be is the length of the cut 150 per unit length of the armpit region 134be. Less than the sum of

Further, in the plurality of cuts 150 formed as shown in FIG. 2, the total length of the cuts 150 in the side region 136re of the backside exterior member 106 is L (re) bus , and the cuts 150 in the inner upper region 138re. length total L (re) mus of, when the total length of the slit 150 in the underarm area 134re and L (re) bls, {( L (re) bus + L (re) mus) / H 1} satisfy <{L (re) bls / H 2}. That is, in the backside exterior member 106, the total length of the cuts 150 per unit length in the vertical direction of the armpit region 136re and the inner upper region 138re is the length of the cut 150 per unit length of the armpit region 134re. Less than the sum of

  Since the region overlapping with the absorbent main body 102 in the vertical direction has a large rigidity against the force of tearing the absorbent article 100 along the horizontal direction, the absorbent main body 102 in the vertical direction as described above. By forming a large number of cuts 150 in the overlapping area, the ventilation is ensured, and by forming the cuts 150 in a small area in the vertical direction not overlapping the absorbent main body 102, the material strength is ensured while ensuring the ventilation. can do.

Further, in the above case, the plurality of cuts 150 formed as shown in FIG. 2 are {(L ^(be) _bus + L ^(re) _bus ) / H ₁ } <{(L ^(be) _bls + L ^{( r e)} _bls ) / H ₂ }. That is, the total length of the linear breaks 150 in the side regions 136be and 136re that do not overlap with the absorbent main body 102 in the vertical direction and does not overlap with the absorbent main body 102 in the horizontal direction is defined as the side region 136be and divided by the vertical length H ₁ of 136re is overlapped with the absorbent body 102 in the longitudinal direction of the ventral side outer member 104 and the back side outer member 106, and does not overlap with the absorbent body 102 in the lateral direction the total length of linear cuts 150 in the underarm area 134be and 134Re, smaller than a value obtained by dividing the vertical length _{H 2} of the underarm area 134be and 134Re.

  Similarly to the above, the region overlapping with the absorbent main body 102 in the vertical direction has a large rigidity against the force of tearing the absorbent article 100 along the horizontal direction. By forming a large number of cuts 150 in a region overlapping with the main body 102, the ventilation is ensured, and by forming a few cuts 150 in a region not overlapping with the absorbent main body 102 in the vertical direction, the material strength is ensured while ensuring the ventilation. This is because it can be secured.

The plurality of cuts 150 formed as shown in FIG. 2 are: L ^(be) is the total length of the cuts 150 in the ventral exterior member 104, and L is the total length of the cuts 150 in the backside exterior member 106. ^{Assuming (re)} , L ^(be) <L ^(re) is satisfied. By forming the cut line 150 in this way, the wearer of the absorbent article 100 forms more cut lines 150 on the back side where the wearer can easily perspire to ensure ventilation, thereby improving comfort during wearing. Can do.

Further, the cut 150 may not be formed in the inner upper region 138be of the ventral exterior member 104. The portion of the abdominal exterior member 104 between the absorbent main body 102 of the absorbent article 100 and the waistline opening AP _wc , in particular, the inner upper region 138be is laterally moved when the wearer pulls up the absorbent article 100. It is a part that is easy to break along. The same applies to the backside exterior member 106, but the wearer of the absorbent article 100 is more likely to sweat on the back side, so the backside exterior member 106 portion needs to ensure air permeability, When the wearer turns his back and leans forward, the wearer can move more easily if a cut is formed in the dorsal exterior member 106. Therefore, by not forming the cut 150 in the inner upper region 138be of the abdominal exterior member 104, the possibility of breakage can be reduced, and the material strength can be ensured. Furthermore, it is also possible not to form the cut 150 in the inner upper region 138be and the armpit region 136be of the abdominal exterior member 104. Similarly to the above, by not forming a cut in the inner upper region 138be and the side region 136be of the abdominal exterior member 104, the possibility of breakage can be reduced and the material strength can be ensured.

  By changing the length, interval, and number of the cuts 150, various ways of forming the cuts 150 are possible.

  FIG. 6 is a diagram illustrating another example of how to form the cut 150 in the ventral exterior member 104 and the back exterior member 106.

  In FIG. 6, a plurality of cuts 150 are formed only in the armpit regions 134be and 134re of the abdominal exterior member 104 and the dorsal exterior member 106, and the inner upper regions 138be and 138re and the armpit regions 136be and 136re Not formed. In each row along the lateral direction of the absorbent article 100, four cuts 150 are formed on one side. The length of the cut is 3 [mm], and four cuts 150 are formed at intervals of 8 [mm], 12 [mm], and 8 [mm], respectively.

  When a plurality of cuts 150 are formed as shown in FIG. 5, the total length of the cuts 150 per unit length in the vertical direction of the armpit region 136be and the inner upper region 138be in the ventral exterior member 104 is This is smaller than the total length of the cuts 150 per unit length of the lower region 134be.

  Further, when a plurality of cuts 150 are formed as shown in FIG. 5, the total length of the cuts 150 per unit length in the vertical direction of the armpit region 136re and the inner upper region 138re in the backside exterior member 106 is This is smaller than the sum of the lengths of the cuts 150 per unit length of the armpit region 134re.

Further, when a plurality of cuts 150 are formed as shown in FIG. 6, linear shapes in the side regions 136be and 136re that do not overlap with the absorbent main body 102 in the vertical direction and do not overlap with the absorbent main body 102 in the horizontal direction. of the total length of the cut 150, aside region 136be and divided by the vertical length _{H 1} of 136re includes an absorbent body 102 in the longitudinal direction of the ventral side outer member 104 and the back side outer member 106 overlapping, and a total length of linear cuts 150 in the underarm area 134be and 134re that does not overlap with the absorbent body 102 in the lateral direction, longitudinal underarm area 134be and 134re length _{H 2} removal It becomes smaller than the value.

  FIG. 7 is a view showing still another example of how to form the cut 150 in the ventral exterior member 104 and the back exterior member 106.

In FIG. 7, a plurality of cuts 150 are formed only in the armpit regions 134be and 134re of the abdominal exterior member 104 and the dorsal exterior member 106, and in the inner upper regions 138be and 138re and the armpit regions 136be and 136re, Not formed. Each of the cuts 150 formed in the ventral exterior member 104 and the back exterior member 106 has a length of 3 [mm]. In the ventral-side exterior member 104, the plurality of gaps 150 are formed at lateral positions closer to the absorbent main body 102 as the vertical position of the row of cut lines 150 extending in the lateral direction approaches the leg periphery opening _APtc . The cut 150 of the backside exterior member 106 is formed in the same manner as in FIG. The total number of cuts 150 in the ventral exterior member 104 is 36, and the total number of cuts 150 in the backside exterior member 106 is 48.

  Therefore, when a plurality of cuts 150 are formed as shown in FIG. 7, the total length of the cuts 150 per unit length in the vertical direction of the side region 136be and the inner upper region 138be in the ventral exterior member 104 is This is smaller than the total length of the cuts 150 per unit length of the armpit region 134be.

  Further, when a plurality of cuts 150 are formed as shown in FIG. 7, the total length of the cuts 150 per unit length in the vertical direction of the armpit region 136re and the inner upper region 138re in the backside exterior member 106 is This is smaller than the sum of the lengths of the cuts 150 per unit length of the armpit region 134re.

Further, when a plurality of cuts 150 are formed as shown in FIG. 7, linear shapes in the side regions 136be and 136re that do not overlap with the absorbent main body 102 in the vertical direction and do not overlap with the absorbent main body 102 in the horizontal direction. of the total length of the cut 150, aside region 136be and divided by the vertical length _{H 1} of 136re includes an absorbent body 102 in the longitudinal direction of the ventral side outer member 104 and the back side outer member 106 overlapping, and a total length of linear cuts 150 in the underarm area 134be and 134re that does not overlap with the absorbent body 102 in the lateral direction, longitudinal underarm area 134be and 134re length _{H 2} removal It becomes smaller than the value.

In the ventral-side exterior member 104 of FIG. 7, the cut 150 is formed closer to the center of the absorbent article 100 as the position in the vertical direction approaches the leg opening AP _tc , so when wearing the absorbent article 100, In the portion corresponding to the base of the foot, the bending rigidity in the longitudinal direction of the absorbent article 100 is lowered, and when the foot is moved, it becomes easy to bend along the shape of the groin portion. Further, since the material strength is reduced at the portion covering the groin, the abdomen exterior member 104 is easily fitted to the groin as the elastic member 140 contracts. By being easy to fit, it becomes difficult to form a space between the abdominal exterior member 104 and the wearer's abdomen, so that the air warmed by the body temperature is less likely to stagnate, and air is ventilated by the cut 150. Therefore, the air permeability is improved.

  FIG. 8 is a diagram showing still another example of how to form the cut 150 in the ventral exterior member 104 and the back exterior member 106.

  In FIG. 8, a plurality of cuts 150 are formed only in the armpit regions 134be and 134re of the abdominal exterior member 104 and the dorsal exterior member 106, and in the inner upper regions 138be and 138re and the armpit regions 136be and 136re, Not formed. In FIG. 8, the cut 150 formed in the ventral exterior member 104 and the back exterior member 106 has a length of 3 [mm] in a region having a lateral length of 3 [mm] and a longitudinal length of 2 [mm]. ] Is formed as a multiple slit 150 having three cuts. If comprised in this way, the non-skin side sheet | seat 118 between each cut | interruption of the multiple slit 150 will become a some strip | belt-shaped part, and since each strip | belt-shaped part is twisted independently, it becomes easier to visually recognize opening.

  When a plurality of multiple slits 150 are formed as shown in FIG. 8, in the ventral exterior member 104, the total length of the cuts 150 per unit length in the vertical direction of the side region 136be and the inner upper region 138be is: It becomes smaller than the sum total of the length of the cut 150 per unit length of the armpit area 134be.

  In addition, when a plurality of multiple slits 150 are formed as shown in FIG. 8, the total length of the cuts 150 per unit length in the vertical direction of the side region 136 re and the inner upper region 138 re in the backside exterior member 106. Is smaller than the total length of the cuts 150 per unit length of the armpit region 134re.

Further, when a plurality of multiple slits 150 are formed as shown in FIG. 8, lines in the side regions 136be and 136re that do not overlap with the absorbent main body 102 in the vertical direction and do not overlap with the absorbent main body 102 in the horizontal direction. the total length of the shaped for cuts 150, aside region 136be and divided by the vertical length _{H 1} of 136re, the absorbent body 102 in the longitudinal direction of the ventral side outer member 104 and the back side outer member 106 It overlaps with, and the total length of the linear cuts 150 in the underarm area 134be and 134re that does not overlap with the absorbent body 102 in the lateral direction, longitudinal underarm area 134be and 134re length _{H 2} Smaller than the divided value.

  FIG. 9 is a diagram showing still another example of how to form the cut 150 in the ventral exterior member 104 and the back exterior member 106.

  In FIG. 9, a plurality of cuts 150 are formed only in the armpit regions 134be and 134re of the abdominal exterior member 104 and the back exterior member 106, and in the inner upper regions 138be and 138re and the armpit regions 136be and 136re, Not formed. In the armpit regions 134be and 134re, there are two different arrangement patterns of the cuts 150 along each row of the cuts 150 that are continuous in the horizontal direction. For example, in FIG. 6, four cuts 150 having a length of 3 [mm] are formed at intervals of 8 [mm], 12 [mm], and 8 [mm], respectively. In FIG. 1, one pattern is a pattern in which only even-numbered cuts 150 are formed, and another pattern is a pattern in which only odd-numbered cuts are formed. As shown in the figure, the above one pattern and another pattern are alternately formed at different positions in the vertical direction of the armpit regions 134be and 134re.

  When a plurality of cuts 150 are formed as shown in FIG. 9, the total length of the cuts 150 per unit length in the vertical direction of the armpit region 136be and the inner upper region 138be in the ventral exterior member 104 is This is smaller than the total length of the cuts 150 per unit length of the lower region 134be.

  Further, when a plurality of cuts 150 are formed as shown in FIG. 9, the total length of the cuts 150 per unit length in the vertical direction of the armpit region 136re and the inner upper region 138re in the backside exterior member 106 is This is smaller than the sum of the lengths of the cuts 150 per unit length of the armpit region 134re.

Further, when a plurality of cuts 150 are formed as shown in FIG. 9, the linear shapes in the side regions 136be and 136re that do not overlap with the absorbent main body 102 in the vertical direction and do not overlap with the absorbent main body 102 in the horizontal direction. of the total length of the cut 150, aside region 136be and divided by the vertical length _{H 1} of 136re includes an absorbent body 102 in the longitudinal direction of the ventral side outer member 104 and the back side outer member 106 overlapping, and a total length of linear cuts 150 in the underarm area 134be and 134re that does not overlap with the absorbent body 102 in the lateral direction, longitudinal underarm area 134be and 134re length _{H 2} removal It becomes smaller than the value.

  FIG. 10 is a diagram showing still another example of how to form the cut 150 in the ventral exterior member 104 and the back exterior member 106.

  The arrangement of the cuts 150 in FIG. 10 is obtained by replacing the cuts 150 of the backside exterior member 106 with the multiple slits 150 in the arrangement of the cuts 150 in FIG. Similarly to FIG. 8, also in FIG. 10, the cut 150 formed in the back exterior member 106 has a length 3 [mm] in a region having a length 3 [mm] in the horizontal direction and a length 2 [mm] in the vertical direction. mm] is formed as a multiple slit 150. Further, the plurality of cuts 150 or the multiple slits 150 are formed only in the armpit regions 134be and 134re of the ventral exterior member 104 and the dorsal exterior member 106, and the inner upper regions 138be and 138re and the armpit regions 136be and 136re. Is not formed.

Therefore, the plurality of cuts 150 and the multiple slits 150 formed as shown in FIG. 10 are the sum of the lengths of the cuts 150 in the ventral exterior member 104 being L ^(be) , and the multiples in the back exterior member 106 are multiplexed. If the total length of the cut 150 constituting the slit 150 and ^{L (r e),} it satisfies the ^{L (be) <L (re} ).

  Furthermore, when a plurality of cuts 150 are formed as shown in FIG. 10, the total length of the cuts 150 per unit length in the vertical direction of the side region 136be and the inner upper region 138be in the ventral exterior member 104 is This is smaller than the total length of the cuts 150 per unit length of the armpit region 134be.

  In addition, when a plurality of cuts 150 and multiple slits 150 are formed as shown in FIG. 10, multiple slits 150 per unit length in the vertical direction of the side region 136re and the inner upper region 138re are formed on the backside exterior member 106. The total length of the cuts 150 to be configured is smaller than the total length of the cuts 150 that form the multiple slits 150 per unit length of the armpit region 134re.

Furthermore, when a plurality of cuts 150 and multiple slits 150 are formed as shown in FIG. 10, the side regions 136be that do not overlap with the absorbent main body 102 in the vertical direction and do not overlap with the absorbent main body 102 in the horizontal direction, and value the total length of the linear cuts 150 in 136Re, divided by the vertical length _{H 1} aside region 136be and 136Re are absorbed in the longitudinal direction of the ventral side outer member 104 and the back side outer member 106 The total length of the linear breaks 150 in the underarm regions 134be and 134re that overlap the sex main body 102 and does not overlap the absorbent main body 102 in the lateral direction is the vertical length of the underarm regions 134be and 134re. It is smaller than a value obtained by dividing H _2.

  The arrangement of the cuts in FIG. 11 is the same as the arrangement of the cuts in FIG. 6, and the cuts 150 are each formed in an X shape. Moreover, the arrangement | sequence of the cut | interruption of FIG. 12 is the same as the arrangement | sequence of the cut | disconnection of FIG. 6, and makes the cut | interruption 150 each U-shaped.

  The operation and effect of the arrangement of the cuts 150 described in FIGS. 11 and 12 are the same as the arrangement of the cuts 150 described in FIG. 6.

  The above description merely provides a disclosure of specific embodiments of the invention and is not intended to limit the invention to only the above embodiments. Accordingly, it is recognized that the present invention is not limited to the embodiments described above, but rather, those skilled in the art can devise alternative embodiments that fall within the scope of the present invention.

100: Absorbent article 102: Absorbent body 104: Abdominal exterior member 106: Back exterior member 108: Absorbent core 110: Top sheet member 112: Back sheet member 114, 116: Elastic member 118: Non-skin side sheet 120 : Skin side sheet 132be, 132re: Inner overlap area 134be, 134re: Armpit area 136be, 136re: Armpit area 138be, 138re: Inner upper area 140: Elastic member (thread rubber)
150: Break

Claims (9)

An absorbent article having a longitudinal direction, a transverse direction and a thickness direction orthogonal to each other,
A ventral exterior member disposed along the lateral direction;
A backside exterior member disposed along the lateral direction, the lateral end of which is connected to the lateral end of the ventral exterior member,
The ventral side exterior member and the back side exterior member are provided between the non-skin side non-skin side sheet, the skin side skin side sheet, and the non-skin side sheet and the skin side skin side sheet, respectively. Provided with rubber thread,
A plurality of linear ventral cuts are formed in a row on at least the non-skin side sheet of the ventral exterior member,
A plurality of linear dorsal cuts are formed in a row on at least the non-skin side sheet of the dorsal exterior member,
In the vertical direction, the dorsal cut is not present at the position where the ventral cut is formed in a row,
In the longitudinal direction, the abdominal cut is not present at a position where the dorsal cut is formed in a line. The absorbent article according to claim 1,
In the vertical direction, the rubber thread of the backside exterior member is present at a position where the ventral cuts are formed in a row, and in the vertical direction, the dorsal cuts are formed in a row. In the position where the rubber thread of the ventral exterior member is present,
An absorbent article characterized by satisfying at least one of the following conditions. In the absorptive article according to claim 1 or 2,
The vertical interval of the ventral cut or the dorsal cut formed in a row is different according to the position in the vertical direction,
The vertical interval of the rubber thread varies depending on the position in the vertical direction, and the rubber bands are arranged one by one between the two ventral cuts or the dorsal cuts adjacent in the vertical direction. An absorbent article characterized by having In the absorptive article according to any one of claims 1 to 3,
The abdominal exterior member and the dorsal exterior member are respectively overlapped with the absorbent main body in the longitudinal direction and the lateral direction, the inner overlap region overlapping with the absorbent main body in the longitudinal direction, and overlapped in the lateral direction. A side region that does not overlap with the absorbent main body in the vertical direction and does not overlap in the horizontal direction, and an inner upper region that does not overlap with the absorbent main body in the vertical direction and overlaps in the horizontal direction And
The total length of the ventral cut per unit length in the vertical direction of the armpit area and the inner upper area is greater than the total length of the ventral cut per unit length of the armpit area. Is also small,
Or
The total length of the dorsal cut per unit length in the vertical direction of the armpit area and the inner upper area is greater than the total length of the dorsal cut per unit length of the armpit area. Absorbent article characterized by being also small. In the absorptive article according to any one of claims 1 to 4,
The total length of the ventral cut of the ventral exterior member is smaller than the total length of the dorsal cut of the back exterior member. In the absorptive article according to any one of claims 1 to 5,
The abdominal exterior member and the dorsal exterior member are respectively overlapped with the absorbent main body in the longitudinal direction and the lateral direction, the inner overlap region overlapping with the absorbent main body in the longitudinal direction, and overlapped in the lateral direction. A side region that does not overlap with the absorbent main body in the vertical direction and does not overlap in the horizontal direction, and an inner upper region that does not overlap with the absorbent main body in the vertical direction and overlaps in the horizontal direction And
An absorbent article, wherein no cut is formed in the inner upper region of the ventral exterior member. The absorbent article according to claim 6,
An absorbent article, wherein no cut is formed in the inner upper region and the side region of the abdominal exterior member. In the absorptive article according to any one of claims 1 to 7,
In at least one member of the ventral exterior member and the back exterior member, an end portion of the non-skin side sheet is folded back to the skin side sheet side and joined to the skin side sheet on the skin side. An absorbent article characterized by that. In the absorptive article according to any one of claims 1 to 7,
In at least one member of the abdominal side exterior member and the back side exterior member, a reinforcing sheet is provided on the skin side of the longitudinal end portion of the skin side sheet.

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