JP5406963B2 - Absorbent articles - Google Patents

Description

  The present invention relates to a disposable absorbent article such as a sanitary napkin, a panty liner, a urine absorption pad, and a disposable diaper for absorbing menstrual blood, cages, and the like.

Conventionally, as an absorbent article such as a panty liner, sanitary napkin, incontinence pad, a liquid-impervious back sheet such as a polyethylene sheet or a polyethylene sheet-laminated nonwoven fabric, and a liquid-permeable top sheet such as a nonwoven fabric or a liquid-permeable plastic sheet And an absorbent body having a compression restoring property made of cotton-like pulp or the like is interposed therebetween.
Many improvements have been made to this type of absorbent article, and various means for preventing leakage have been taken. As one of these leakage prevention means, the absorbent body is provided with a middle-high part, and an embossed recess that cuts into the absorbent body by thermal embossing is formed along its peripheral edge (front, rear, left and right), and the part having the middle-high part is formed on the body surface. There are techniques to fit. For example, in Patent Document 1, the absorbent body that has been uniformly piled is squeezed and deformed with fit embossing in the shape of a medium-high shape to form a middle-high portion, and a body wall is formed by providing a leak-proof groove around the middle-high portion. Techniques for preventing diffusion (leakage) have been proposed.
Further, in Patent Document 2, an absorption element that receives body fluid from the use surface side and holds it inside, a leakage prevention sheet that is on the back surface side and prevents leakage of body fluid from the absorption element to the back surface side, and at least the product In the middle of the longitudinal direction, it has elastic elastic members for the gathered cuff sheet that is on both sides of the product and does not substantially allow permeation of bodily fluids. A gathering cuff standing on the skin side, the absorbent element straddling the blood drainage site along the longitudinal direction, and has a middle, middle and high part on the use surface side in the center in the width direction, the gathering cuff The contraction force is configured to act on a length range corresponding to at least the range spanning the site of blood drainage, and on both sides of the middle and high portions of the absorbent element, the end spans at least the length range spanning the site of blood drainage. Scan is formed, these embossments, sanitary napkin has a shape that bulges outward in the width direction than the front and rear in Haichiguchi sites have been proposed.

JP-A-11-33054 JP 2001-95842 A

However, if the embossed recess that bites into the absorbent body from the topsheet surface is formed, the topsheet, which is a flat material, is pulled unevenly, so that wrinkles enter the embossed recess and damage the product value (quality). was there. This problem is also related to the speed of the production line. As the line speed increases, wrinkles are more likely to occur. Therefore, the generation of wrinkles can be prevented to some extent by lowering the line speed. The problem remains in that it is not an easy solution.
Then, the main subject of this invention is providing the technique which can prevent generation | occurrence | production of the wrinkle in a top sheet reliably.

The present invention that has solved the above problems is as follows.
<Invention of Claim 1>
Between the liquid permeable top sheet and the back sheet, the absorbent body having a compressive resiliency is interposed, in the front side of the top sheet is the absorber extends in a shape along the surface shape of the absorbent body Rutotomoni In the absorbent article, the embossed recess that bites into the absorbent body from the surface of the top sheet extends linearly,
A slit or a punched hole is formed in the vicinity of the bottom of the embossed recess in the top sheet, and a portion having the slit or the punched hole is orthogonal to the extending direction of the embossed recess due to the deformation of the slit or the punched hole. Stretching direction is higher than other parts, thereby preventing the occurrence of wrinkles due to non-uniform pulling of the topsheet when forming the embossed recesses near the embossed recesses of the topsheet. ing,
An absorbent article characterized by the above.

(Function and effect)
If a slit or a punched hole is formed near the bottom of the embossed recess in the top sheet, even if the top sheet is pulled unevenly when forming the embossed recess that bites into the absorbent body from the top sheet surface, the slit or The top sheet expands and contracts locally so as not to wrinkle due to deformation such as opening / closing and expansion / contraction of the punching hole. As a result, generation of wrinkles in the top sheet is prevented. Further, the effect of the present invention is surely exhibited regardless of the speed of the production line. Furthermore, by making a slit or a punched hole, the liquid can easily enter the absorber, and the secondary effect of increasing the absorption speed is also brought about. In addition, since the present invention is “the portion having the slit or the punched hole has higher stretchability in the direction perpendicular to the extending direction of the embossed recess due to the deformation of the slit or the punched hole”, for example, In addition, a form of using only a perforated film (having a large number of holes uniformly throughout the sheet) widely used as a top sheet is not included.

<Invention of Claim 2>
The absorptive article according to claim 1 in which said slit is formed in the direction which makes the angle which the longitudinal direction of said slit and the extension direction of said embossing crevice form 45 degrees or less.

(Function and effect)
If the angle formed by the longitudinal direction of the slit and the extending direction of the embossed recess is too large, the slit is difficult to be deformed even when the top sheet is pulled unevenly when the embossed recess is formed. Therefore, in this invention, it is preferable that the angle | corner which the longitudinal direction of a slit and the extending direction of an embossing recessed part make is 45 degrees or less. The “longitudinal direction of the slit” means a direction connecting both ends of the slit when the slit is curved. The “extending direction of the embossed recess” means a tangential direction in a portion closest to the slit when the embossed recess extends in a curved shape. These meanings are the same also in other description of this invention.

<Invention of Claim 3>
A plurality of the slits or punched holes are formed at intervals along the embossed recess, and the slits or punched holes are provided only in the vicinity of the bottom of the embossed recess in the top sheet. 2. The absorbent article according to 2.

(Function and effect)
As described above, when a plurality of slits or punching holes are formed at intervals along the embossed recess, wrinkles associated with the formation of the embossed recess can be more effectively prevented, and individual openings in the top sheet The exposure of the material on the back side of the top sheet can be suppressed. In particular, when the embossed recess is curved, the top sheet receives tension in various directions and is likely to generate wrinkles in various directions, but a plurality of slits or punched holes are formed at intervals along the embossed recess. As a result, wrinkles in all directions can be effectively prevented.

  On the other hand, in the present invention, the absorber has a high middle-high portion on the use surface side at a middle portion in the front-rear direction and in the center in the width direction, and the embossed recess extends along the periphery of the middle-high portion. It is preferable that it is.

  In an absorbent article provided with an absorbent body having such a mid-high portion, it has been conventionally practiced to form an embossed recess along the periphery of the mid-high portion in order to improve the fit of the portion having the mid-high portion. However, in this case, since the difference in height between the middle and high portions and the surrounding portions is so large that it cannot be accommodated by normal expansion and contraction of the top sheet, wrinkles are likely to occur near the bottom of the embossed recess in the top sheet. Therefore, the present invention is particularly effective when applied to such a form.

  In this case, in the present invention, it is preferable that the slit or the punched hole is formed in a range overlapping with the middle and high portions of the top sheet.

  In an absorbent article provided with an absorbent body having a middle-high portion, when forming an embossed recess along the periphery of the middle-high portion, wrinkles easily enter a range overlapping the middle-high portion in the top sheet. Therefore, it is preferable to provide the slit or punched hole of the present invention within this range. In addition, if slits or punched holes are formed within the range of the middle and high parts, the liquid component that flows from the middle and high parts to the surroundings quickly moves to the back side through the slits or punched holes and is absorbed by the absorber. The

Further, in the present invention, the absorber has a high mid-high portion on the use surface side at a middle portion in the front-rear direction and in the center in the width direction, and the embossed recesses are front-rear along the both sides in the width direction of the mid-high portion. Is extended to
In the center part in the width direction of the range overlapping the middle and high part in the top sheet, a high part with a high height and a low part with a low height are juxtaposed in the front-rear direction,
The slits or punched holes are respectively formed on both sides in the width direction of the high part and both sides in the width direction of the low part in the range overlapping with the middle and high part in the top sheet,
The length in the front-rear direction of the slit or the punched hole in the high part is longer than the length in the front-rear direction of the slit or the punched hole in the low part.
Is preferred.

  In the absorbent article provided with the absorbent body having the middle and high parts, when the embossed recesses extend in the front-rear direction along both sides in the width direction of the middle and high parts, for example, even if the middle and high parts have a constant height, In the central portion in the width direction of the range overlapping with the middle and high portions, the height of the middle portion in the front-rear direction of the middle and high portions becomes high, and the height becomes lower as approaching the front and rear end portions of the middle and high portions. As described above, in many absorbent articles having the middle and high parts, a high part with a high height and a low part with a low height are arranged in the front-rear direction in the central part in the width direction of the top sheet in a range overlapping with the middle and high parts. It is installed. In this case, there is a risk of wrinkling at both the high and low portions of the top sheet, and the top sheet is relatively weak at the high portion and relatively strong at the high portion. Tension will be applied.

  On the other hand, if the length in the front-rear direction of the slit or punching hole in the high part is longer than the length in the front-rear direction of the slit or punching hole in the low part, the slit or punching hole in the high part Is deformed larger than the slit or punched hole in the low part, and the tension is not biased, so that the generation of wrinkles can be effectively prevented.

Further, in the present invention, the absorber has a high mid-high portion on the use surface side at a middle portion in the front-rear direction and in the center in the width direction, and the embossed recesses are front-rear along the both sides in the width direction of the mid-high portion. Is extended to
In the center part in the width direction of the range overlapping the middle and high part in the top sheet, a high part with a high height and a low part with a low height are juxtaposed in the front-rear direction,
In the range overlapping with the middle and high portions in the top sheet, the slit or punched holes are formed singly or plurally at predetermined intervals in the width direction on each side in the width direction of the lower portion, and the height portion The slits or punched holes are formed on each of both sides in the width direction of the part, and a larger number than the low part is formed at a predetermined interval in the width direction.
It is also preferable.

  As described above, there is a risk that wrinkles may occur at both the high and low portions of the top sheet, and the top sheet has a relatively strong tension at the high portion and is relatively at the low portion. When weak tension is applied to the high part, the number of slits or punched holes in the high part is increased more than the number of slits or punched holes in the low part. Since it is not biased, generation of wrinkles can be effectively prevented.

<Invention of Claim 4>
The absorptive article according to any one of claims 1 to 3 in which said top sheet consists of a porous plastic sheet .

(Function and effect)
The size of the slit or punched hole can be determined as appropriate, but if it is too small, the effect of preventing wrinkles will be poor, and if it is too large, the material exposure on the back side of the top sheet will be a problem. It is preferable to be within the range.
<Invention of Claim 5>
The absorptive article according to any one of claims 1 to 4 in which said embossed crevice extends in the shape of a curve.

  As described above in detail, according to the present invention, when forming the embossed recess that bites into the absorbent body from the top sheet surface, it is possible to reliably prevent generation of wrinkles in the top sheet.

It is an expanded view of a sanitary napkin. It is the cross-sectional view (II-II line arrow view of FIG. 1). It is the cross-sectional view (III-III arrow directional view of FIG. 1). It is a principal part enlarged view of FIG. It is an expanded view of the other sanitary napkin 1. FIG. It is a principal part enlarged view of FIG.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
<Example of basic structure of sanitary napkin>
1 is a developed view of a sanitary napkin 1 according to the present invention, FIG. 2 is a view taken along the line II-II in FIG. 1, FIG. 3 is a view taken along the line III-III in FIG. FIG. The sanitary napkin 1 includes a liquid-impervious backsheet 2 made of a polyethylene sheet, a liquid-permeable topsheet 3 that allows permeation of menstrual blood, cages, and the like, and an intervening space between the sheets 2 and 3. Absorbent bodies 4 and 6 made of cotton-like pulp or synthetic pulp, etc., crepe paper 5 surrounding the absorbent body 4 for maintaining the shape of the absorbent body 4 and improving diffusibility, and substantially side edges of the absorbent body 4 An absorbent body mainly composed of a pair of left and right three-dimensional gathers BS and BS provided on the surface side in a predetermined section in the front-rear direction so as to include at least a body fluid discharge part. 4, the outer edges of the liquid-impervious backsheet 2 and the liquid-permeable topsheet 3 are joined at the upper and lower edges by an adhesive such as hot melt or an adhesive means such as heat seal. The liquid-impervious backsheet 2 extending laterally from the absorbent body 4 at the side edges and the side nonwoven fabric 7 forming the three-dimensional gather BS are bonded by an adhesive such as hot melt or a heat seal. Wings-like flaps W and W that are joined by the means and project laterally by the laminated sheet portion of the liquid-impermeable back sheet 2 and the side nonwoven fabric 7 are formed, and the portion located on the heel side from this The second wing-shaped flaps WB and WB are formed on the top.

  As the liquid-impermeable back sheet 2, a sheet material having at least water shielding properties such as polyethylene is used, but in recent years, a material having moisture permeability tends to be used from the viewpoint of preventing stuffiness. The water- and moisture-permeable sheet material is a microporous material obtained by melting and kneading an inorganic filler in an olefin-based resin such as polyethylene or polypropylene to form a sheet, and then stretching in a uniaxial or biaxial direction. A sheet is preferably used. One or a plurality of adhesive layers (not shown) are formed on the non-use surface side (outer surface) of the liquid-impermeable back sheet 2 so that the sanitary napkin 1 is fixed to the underwear when worn on the body. It has become. As the liquid-impermeable back sheet 2, a polylaminated nonwoven fabric in which a plastic film and a nonwoven fabric are laminated may be used.

  Next, as the liquid-permeable top sheet 3, a porous or non-porous nonwoven fabric or a porous plastic sheet is preferably used. As the material fibers constituting the nonwoven fabric, in addition to olefins such as polyethylene or polypropylene, polyesters, polyamides, and other synthetic fibers, regenerated fibers such as rayon and cupra, and natural fibers such as cotton can be used. A long fiber or short fiber nonwoven fabric obtained by an appropriate processing method such as a method, a spun bond method, a thermal bond method, a melt blown method, a needle punch method, an air through method, or a point bond method can be used. Among these processing methods, the spunlace method is excellent in terms of flexibility and drapeability, and the thermal bond method is excellent in terms of being bulky and soft. When the liquid permeable top sheet 3 has a large number of through holes, menstrual blood, venom, etc. (hereinafter collectively referred to as body fluids) are quickly absorbed, and have excellent dry touch properties. Become.

  The absorbent body 4 may be of any type that has compressibility and can absorb and retain body fluids. Usually, a fluffy pulp mixed with a water-absorbing polymer powder is preferable from the viewpoint of absorption function and price. Used for. The absorbent body 4 is preferably surrounded by crepe paper 5 for holding the shape and polymer powder.

  On the use surface side of the absorber 4, there is a high absorber on the use surface side in an area defined by an annular embossed recess 8 (described later) that is elongated in the longitudinal direction of the napkin at the center in the width direction and closed in the circumferential direction. The middle-high part 6 is formed. The thickness of the middle-high portion 6 is preferably 3 to 20 mm, preferably 5 to 15 mm, because if the thickness is too large, the rigidity of the absorber 4 increases and the adhesion to the body decreases. Moreover, the embossing recessed part 9,10,11 is formed in the use surface side with the embossed recessed part 8, respectively. Each of these embossed recesses 8 to 11 will be described in more detail later.

On the other hand, the width dimension of the liquid-permeable top sheet 3 is slightly longer than the width of the absorbent body 4 and covers the absorbent body 4 as shown in the cross-sectional views of FIGS. The three-dimensional gathered BS is different from the liquid-permeable top sheet 3 according to the purpose such as preventing the penetration of the side non-woven fabric 7, specifically menstrual blood or the like, or enhancing the touch feeling. The nonwoven fabric material is subjected to appropriate water repellent treatment or hydrophilic treatment. The side nonwoven fabric 7 can be made of natural fiber, synthetic fiber, regenerated fiber, or the like and formed by an appropriate processing method. Preferably, the side nonwoven fabric 7 eliminates the feeling of stickiness and prevents stuffiness. For this reason, it is preferable to use a non-woven fabric with reduced basis weight and air permeability. Specifically, it is desirable to use a nonwoven fabric prepared with a basis weight of 18 to 23 g / m ² , and in order to prevent permeation of body fluids reliably, a silicone-based or paraffin-based water repellent is coated. The water-repellent treated non-woven fabric is preferably used.

  As shown in FIGS. 2 and 3, the side nonwoven fabric 7 is a range from the inner side position of the absorbent body 4 to the outer edge of the liquid-impervious backsheet 2 slightly beyond the intermediate side position of the absorbent body 4 from the widthwise intermediate portion. A pair of left and right wing flaps W are bonded to the absorbent body side portion substantially corresponding to the body fluid discharge portion by the laminated sheet portion of the side nonwoven fabric 7 and the liquid-impermeable back sheet 2. , W are formed, and second wing-shaped flaps WB, WB are formed at the buttock side position. These wing-shaped flaps W, W and the second wing-shaped flaps WB, WB are respectively provided with adhesive layers 12 ... 13, and the wing-shaped flaps W, W are at the position of the folding line RL when mounted on the shorts. It is folded back to the opposite side, wrapped around the crotch part of the shorts and fastened.

  On the other hand, while the inner side part of the side nonwoven fabric 7 is folded back substantially double, a thread-like elastic elastic member 19 in which both ends or appropriate positions in the longitudinal direction are fixed to the middle portion in the height direction inside the double sheet. And a plurality of, in the illustrated example, two thread-like elastic elastic members 20 and 20 are arranged at both ends or in appropriate positions in the longitudinal direction at the upper portion of the thread-like elastic elastic member 19. Has been. As shown in FIG. 3, the double sheet portion is bent and laminated on the absorbent body 4 side in a state of being folded in a Z-shaped cross section, thereby bending the portion where the elastic elastic member 19 is disposed. As a point, three-dimensional gathers BS and BS standing on the surface side are formed while forming pockets P and P having openings inward in a cross-sectional shape.

  On the other hand, in the sanitary napkin 1, as shown in detail in FIG. 4, the middle height portion 6 of the high absorbent body is provided on the use surface side at the center in the width direction, and so as to surround the middle height portion 6. An embossed recess 8 elongated in the longitudinal direction of the napkin 1 is formed so as to bite from the surface of the top sheet 3 into the absorbent body 4. By having such a middle-high part 6, the high part HP having a high height and the low part LP having a low height are arranged in the front-rear direction at the central part in the width direction of the range overlapping the middle high part 6 in the top sheet. Established. More specifically, the height of the surface of the top sheet 3 tends to increase as the height of the middle portion in the front-rear direction of the middle-high portion 6 increases and decreases toward the front and rear ends of the middle-high portion 6. Below, the center part of the width direction of the part HP in which the width direction separation distance is larger than the front and rear adjacent parts in the annular embossed concave part 8 is a high place, and the parts LP adjacent to the front and rear are relatively low places.

  On the outer side of the middle and high portions 6, rear side embossed recesses 10, 10 extending in the longitudinal direction of the napkin 1 are formed on both sides of the rear portion of the embossed recess 8 with a predetermined distance from the embossed recess 8. In the illustrated example, each of the rear side embossed recesses 10 is an arcuate curve having a center of curvature on the outside of the napkin 1. In addition, a substantially umbrella-shaped front end independent embossed recess 9 is formed on the front side of the embossed recess 8 with a predetermined distance from the embossed recess 8, and the embossed recess 8 is positioned on the rear side of the embossed recess 8. A rear end independent emboss 11 having a substantially inverted umbrella shape is formed at a predetermined interval.

<About features>
And in the sanitary napkin comprised as mentioned above, it is a slit in the vicinity of the width direction center side (middle high part 6 side) over the whole front-back direction extension part located in the width direction both sides among the embossing recessed parts 8. A number 30 is formed at intervals along the embossed recess 8. The shape of the slit 30 is preferably linear as shown in the figure, but can be determined as appropriate, and may be a curved shape such as an arc. Moreover, it can replace with the slit 30 and can also be set as the punching hole of the appropriate shape in which an opening has an area like a circular hole or an elliptical hole.

  If a slit 30 (or a punched hole) is formed near the bottom of the embossed recess 8 in the topsheet 3, the topsheet 3 is formed when the embossed recess 8 that bites into the absorbent body 4 from the surface of the topsheet 3 is formed. Even if it is pulled non-uniformly, the top sheet 3 expands and contracts so as not to be locally wrinkled by deformation such as opening and closing of the slit 30 (the punching hole is expanded and contracted). If the embossed recess 8 is curved as shown in the figure, the top sheet 3 receives tension in various directions, but the slits 30 (or punched holes) are spaced along the embossed recess 8. By forming a plurality of spaces, wrinkles in all directions can be effectively prevented. As a result, generation of wrinkles in the top sheet 3 is prevented. In the drawing, only the state before the deformation of the slit 30 is shown, and the state after the deformation is omitted.

  When a plurality of slits 30 (or punched holes) are provided at intervals along the embossed recess 8, the mutual interval 30d (the shortest distance between the closest ones) is preferably 1 to 50 mm. If the interval 30d is too wide, it is difficult to prevent wrinkles, and if it is too narrow, the slit 30 (or punched hole) is wasted.

  When the slit 30 is provided, the direction of the slit 30 can be appropriately determined. However, if the angle θ formed by the longitudinal direction of the slit 30 and the extending direction of the embossed recess is too large, the top sheet 3 is not formed when the embossed recess 8 is formed. Even if it is pulled uniformly, the slit 30 is difficult to deform. Therefore, the angle θ formed by the longitudinal direction of the slit 30 and the extending direction of the embossed recess 8 is preferably 45 degrees or less. In the illustrated embodiment, the linear slit 30 is formed in a direction along the front-rear direction and satisfies this angle requirement. However, in the case where the linear slit 30 is formed in a direction along the width direction, Does not meet this angular requirement.

  The size of the slit 30 (or punched hole) can also be determined as appropriate, but if it is too small, the effect of preventing wrinkles will be poor, and if it is too large, the material exposure on the back side of the top sheet 3 will be a problem. The length in the longitudinal direction (equal to the length in the front-rear direction in the case of the illustrated embodiment) Y1, Y2 is preferably 1 to 10 mm (especially 2 to 10 mm in the case of a slit).

  Further, the separation distance 30e between the slit 30 (or punched hole) and the bottom of the embossed recess 8 can be determined as appropriate, but if it is too close, the amount of deformation of the slit 30 (or punched hole) becomes excessively large, which is a problem of appearance. Since it will become easy to generate | occur | produce and it will become difficult to prevent generation | occurrence | production of a wrinkle when it is too far, it is preferable that it is 1-50 mm. The separation distance 30 e means the shortest distance between the slit 30 (or the edge of the punching hole) and the proximal edge of the bottom of the embossed recess 8.

  Further, when the high portion HP and the low portion LP are juxtaposed in the front-rear direction at the center in the width direction in the range overlapping the middle and high portions 6 in the top sheet 3 as illustrated, the height in the top sheet 3 is increased. There is a risk that wrinkles may occur in both the low part HP and the low part LP, and a relatively strong tension is applied to the high part HP of the top sheet, and a relatively weak tension is applied to the low part LP. It will be. In this case, if the slits 30 (or punched holes) are only provided uniformly along the embossed recesses 8, there is a possibility that wrinkles may occur without being able to cope with the strength of the tension. Therefore, as shown in the figure, the length Y1 in the front-rear direction of the slit 30 (or punched hole) in the high portion HP is greater than the length Y2 in the front-rear direction of the slit 30 (or punched hole) in the low portion LP. When the long form is adopted, the slit 30 (or the punched hole) in the high portion HP is deformed more than the slit 30 (or the punched hole) in the low portion LP, and the tension is not biased. Can be prevented.

<Others>
(1) In the above example, the slit 30 extends along the embossed recess 8 in the vicinity of the center in the width direction (the middle-high portion 6 side) of the embossed recess 8 over the entire extending portion in the front-rear direction located on both sides in the width direction. In the present invention, as long as the slit 30 is formed in the vicinity of the bottom of the embossed recess 8 in the top sheet 3, the number and part of the slit are not particularly limited. For example, although not shown, one or more slits or punching holes may be formed only in a part of the portion along the embossed recess such as the high portion HP, or a slit may be formed outside the embossed recess 8. . Further, not in the embossed recess 8 along the periphery of the middle-high portion 6, but in the rear side embossed recess 10 provided in the flat portion outside the middle-high portion 6, the front end independent embossed recess 9 and the rear end independent embossed recess 11 At the time of forming the work, wrinkles may occur due to the same cause as the peripheral embossed concave portion 8 of the middle-high portion 6, so a slit may be formed near the bottom portion, that is, inside (center side) or outside, or the middle-high portion 6 It is also included in the present invention to form a slit with respect to the embossed recess in the absorbent article that does not have any.

  (2) In the above example, the lengths Y1 and Y2 of the slit 30 are made different between the high portion HP and the low portion HP, but instead of this (or in combination with this), FIG. As shown in FIG. 6, it is also proposed to provide a plurality of slits 30 (or punched holes) in the high portion HP with a predetermined interval 30x in the width direction as compared with the low portion LP. Even in this case, the high portion HP expands and contracts more than the low portion LP, and the tension is not biased. Therefore, the generation of wrinkles can be effectively prevented. If the interval 30x in the width direction of the slits 30 (or punched holes) is too wide, it will be difficult to prevent wrinkles, and if it is too narrow, the slits 30 (or punched holes) will be wasted. . Further, as in the illustrated embodiment, it is preferable that the number of slits 30 (or punched holes) gradually increase as it goes from the low portion LP to the high portion HP.

  (3) The heights of the high part HP and the low part LP are not particularly limited. Particularly, a part having a height difference of about 5 to 30 mm is defined as the high part HP and the low part LP, and the slits 30 ( Alternatively, it is preferable to make the length and number of the punched holes) different.

  (4) In the above example, the embossed recess 8 has a pair of left and right embossed lines joined at the front end and the rear end of the napkin to form a closed shape as a whole. Or you may form in the aspect which is not couple | bonded at a rear-end part.

  DESCRIPTION OF SYMBOLS 1 ... Sanitary napkin, 2 ... Impermeable back sheet, 3 ... Liquid permeable top sheet, 4 ... Absorber, 5 ... Crepe paper, 6 ... Middle high part, 7 ... Side nonwoven fabric, 8 ... Embossed recessed part, 9 ... Front end independent emboss, 10 ... Rear side emboss, 11 ... Rear end independent emboss, 30 ... Slit, BS ... Solid gather, W ... Wing-like flap, WB ... Buttocks side wing-like flap.

Claims (5)

Between the liquid permeable top sheet and the back sheet, the absorbent body having a compressive resiliency is interposed, in the front side of the top sheet is the absorber extends in a shape along the surface shape of the absorbent body Rutotomoni In the absorbent article, the embossed recess that bites into the absorbent body from the surface of the top sheet extends linearly,
A slit or a punched hole is formed in the vicinity of the bottom of the embossed recess in the top sheet, and a portion having the slit or the punched hole is orthogonal to the extending direction of the embossed recess due to the deformation of the slit or the punched hole. Stretching direction is higher than other parts, thereby preventing the occurrence of wrinkles due to non-uniform pulling of the topsheet when forming the embossed recesses near the embossed recesses of the topsheet. ing,
An absorbent article characterized by the above.   The absorptive article according to claim 1 in which said slit is formed in the direction which makes the angle which the longitudinal direction of said slit and the extension direction of said embossing crevice form 45 degrees or less. A plurality of the slits or punched holes are formed at intervals along the embossed recess, and the slits or punched holes are provided only in the vicinity of the bottom of the embossed recess in the top sheet. 2. The absorbent article according to 2. The absorptive article according to any one of claims 1 to 3 in which said top sheet consists of a porous plastic sheet .   The absorptive article according to any one of claims 1 to 4 in which said embossed crevice extends in the shape of a curve.

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