JP2017221265A - Absorbent article - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an absorbent article which can give excellent wearing feelings and show high absorption performance even when a wearer has actions such as walking and in which absorption performance is unlikely to lower even when a position is adjusted while worn.SOLUTION: An absorbent article according to the current invention has: an excretion port corresponding area (A) which corresponds to the excretion port of a wearer when the absorbent article is put on in a longitudinal direction in a planar view; and a back area (A) positioned at the back. An absorber (22) includes: a non-stretchable area (N) in the excretion port corresponding area (A); a stretchable area (E) stretchable at least in the longitudinal direction in the back area (A); and a back non-stretchable area (N) which is adjacent to the back of the stretchable area and extends in the whole width direction of the absorber. Moreover, the back non-stretchable area (N) includes a compression part (C) integrating a surface sheet (21) and the absorber (22).SELECTED DRAWING: Figure 1

Description

  The present invention relates to absorbent articles such as sanitary napkins, panty liners, and incontinence pads.

  Absorbent articles such as sanitary napkins, panty liners, and incontinence pads are worn for a long time while in contact with the wearer's crotch. Absorbent articles that are easy to deform following the body shape of a person (that is, excellent in fit) have been studied.

  As such an absorbent article, for example, Patent Document 1 discloses an absorbent article including an absorbent layer, and the absorbent layer includes a plurality of slits or a stretchable zone formed by local stretching. The absorbent article has been proposed. The absorbent article disclosed in Patent Document 1 is said to be able to improve body compatibility (that is, fit) to the wearer of the absorbent article.

Special table 2007-523665 gazette

In the absorbent article disclosed in Patent Document 1, the extensible zone is not arranged according to the operation mode of the wearer, and the extensible zone extends from the front region in the longitudinal direction of the absorbent article in the longitudinal direction. It is provided over the rear region. However, the absorbent article worn by the wearer moves in the longitudinal direction corresponding to the wearer's buttocks by moving the wearer's buttocks alternately left and right when the wearer performs an operation such as walking. Since a force is applied in a direction twisting around the longitudinal direction of the absorbent article, when the extensible zone is arranged as in Patent Document 1 described above, the force in the twisting direction in the rear region causes the wearer's excretion opening. To the area corresponding to (or in contact with), the area corresponding to the excretion opening is deformed, and the feeling of wear is reduced, or the liquid excretion discharged from the wearer leaks. There was a fear.
Moreover, like the absorbent article disclosed in Patent Document 1, when the absorbent article has a predetermined stretchability, the wearer grips the rear region of the absorbent article being worn and the absorbent article When adjusting the position of the article, the part holding the absorbent article in order to adjust the position of the absorbent article while stretching the absorbent article in the longitudinal direction (that is, while pulling strongly in the longitudinal direction) Further, there is a possibility that the force concentrates on the vicinity thereof and the absorbent body is broken, resulting in a decrease in the absorbent performance of the absorbent article.

  Therefore, the present invention can exhibit an excellent wearing feeling and high absorption performance even when the wearer performs an operation such as walking, and also absorbs the absorption performance that is difficult to decrease even if the position is adjusted during wearing. It aims at providing a property article.

  The absorbent article which concerns on 1 aspect (aspect 1) of this invention is the surface sheet located in the skin opposing surface side of an absorbent article, the back sheet located in the non-skin opposing surface side of an absorbent article, and each of these sheets An absorbent article having a longitudinal direction, a width direction, and a thickness direction, comprising the absorbent body positioned between the absorbent article and the absorbent article in the longitudinal direction in plan view. It has an excretion port corresponding region corresponding to the excretion port of the wearer at the time of wearing, and a rear region positioned behind the excretion port corresponding region, and the absorber extends in the longitudinal direction in the excretion port corresponding region. In addition to the non-stretchable region extending across the axis, the stretchable region stretchable at least in the longitudinal direction in the rear region, and adjacent to the rear of the stretchable region and extending in the entire width direction of the absorber A rear non-stretchable region The rear non-stretchable region comprises a compression unit for integrating the topsheet and the absorbent body, it is the absorbent article.

The absorbent article according to the first aspect includes a non-stretchable region in which the absorbent body extends across the widthwise central axis extending in the longitudinal direction in the excretory opening corresponding region (that is, the excretion port corresponding region of the absorbent article is deformed). And includes a stretchable region that is stretchable at least in the longitudinal direction in the rear region (that is, the rear region of the absorbent article is easily stretchable or curved along the longitudinal direction, and the longitudinal direction is the axis) Therefore, when the wearer performs an action such as walking, the wearer's buttocks move alternately left and right, so that the absorbent article is twisted in the rear region. Even when force is applied to the rear region, the stretchable region in the rear region follows the movement of the wearer and deforms in the twisting direction described above, so that the rear region is in close contact with the wearer's skin surface. It can be maintained (i.e., it is possible to obtain an excellent wearing feeling). In addition, the absorbent article according to the present aspect has the above-described twisting force that is buffered by the deformation of the rear region and is not easily transmitted to the excretion port corresponding region. The liquid excretion discharged from the wearer can be stably absorbed over a long period of time (that is, high absorption performance can be exhibited).
Further, the absorbent article of the present aspect includes a rear non-stretchable region in which the absorber is adjacent to the rear of the stretchable region in the rear region and extends across the entire width direction of the absorber, and the rear non-stretchable region further includes Since the compression part which integrates a surface sheet and an absorber is included (namely, it is comprised so that the rigidity of the rear part in the back area of an absorbent article may become high), the absorbent article which a wearer is wearing. When the position of the absorbent article is adjusted by gripping the rear area of the absorbent article (hereinafter sometimes simply referred to as “position adjustment while wearing”), the absorbent article is elongated in the longitudinal direction (that is, Even if the position of the absorbent article is adjusted (while pulling strongly in the longitudinal direction), the force applied to the absorbent body in the portion gripped by the wearer and the vicinity thereof is applied to the entire area in the width direction of the compressed portion and the absorbent body. Extending backward non-extension While dispersing in the entire width of the absorbent body by the region, the stretchable region of the absorber can be extended along the longitudinal direction. Thereby, even if position adjustment is performed during wear, the absorptive article is hard to tear, and as a result, the absorptive performance of an absorptive article does not fall easily.
As described above, the absorbent article of the present aspect can exhibit excellent wear feeling and high absorption performance even when the wearer performs an operation such as walking, and also absorbs performance even if position adjustment is performed during wearing. Is hard to decline.

  Moreover, in another aspect (aspect 2) of the present invention, in the absorbent article according to aspect 1, the rear non-stretchable region is a region including an edge at the rear of the absorbent body.

  In the absorbent article according to this aspect, since the above-described rear non-stretchable region is a region including the edge on the rear side of the absorbent body, the wearer grasps the above-described rear non-stretchable region during position adjustment during wearing. The above-described operational effect (that is, the operational effect that the absorbent body is difficult to be cut off and consequently the absorbent performance of the absorbent article is difficult to decrease) that is achieved by having the rear non-stretchable region is more reliable. Can be demonstrated.

  Furthermore, in another aspect (aspect 3) of the present invention, in the absorbent article according to aspect 1 or 2, the squeezed portion exists across the stretchable region and the rear non-stretchable region.

  In the absorbent article according to this aspect, since the compressed portion exists across the stretchable area and the rear non-stretchable area, the wearer holds the absorbent article in the longitudinal direction while holding the rear area of the absorbent article. When pulling, the pulling force of the wearer is easily propagated to the stretchable region through the above-described pressing portion. As a result, the absorbent article of this aspect can be adjusted to a more accurate position while extending the absorbent article in the longitudinal direction during position adjustment during wearing, resulting in a better feeling of wear. Can be obtained.

  Furthermore, in another aspect (aspect 4) of the present invention, in the absorbent article according to any one of aspects 1 to 3, the squeezed portion has a plan view shape in which the length in the width direction increases toward the front. Yes.

  Since the absorbent article of this aspect has a shape in plan view in which the length in the width direction increases as the pressing part moves forward, the wearer holds the absorbent article while gripping the rear region of the absorbent article. When pulling in the longitudinal direction, the force that is locally applied in the rear non-stretchable region (that is, the force that is applied to the absorber holding the absorbent article and the absorber in the vicinity thereof) has the specific plan view shape described above. The compressed portion can be more reliably propagated forward while being dispersed in the width direction of the absorbent body. Thereby, even if the absorbent article of this aspect adjusts the position of the absorbent article while pulling the absorbent article strongly in the longitudinal direction during position adjustment during wearing, the absorbent body in the absorbent article It is even more difficult to break, and as a result, the absorbent performance of the absorbent article is unlikely to further decrease.

  Furthermore, in another aspect (aspect 5) of the present invention, in the absorbent article according to any one of aspects 1 to 4, the absorbent article is in the longitudinal direction and the width direction on the non-skin facing surface of the back sheet. It has the adhesion part arrangement | positioning area | region extended, and the said pressing part exists behind the back edge of the said adhesion part arrangement | positioning area | region in the said longitudinal direction.

  The absorbent article of this aspect is worn between the absorbent article and the undergarment to which the absorbent article is fixed because the compressed part is present behind the rear edge of the adhesive part arrangement region in the longitudinal direction. The person's finger is easy to enter (that is, it is easy for the wearer to grasp the above-described compressed portion), and at least the compressed portion and the vicinity thereof in the above-described rear non-stretchable region are easy to move ( That is, the portion gripped by the wearer and the vicinity thereof are easy to move). As a result, the absorbent article according to this aspect allows the wearer to more reliably grip the rear region of the absorbent article during position adjustment during wearing, and position the absorbent article in a more accurate position. As a result, it is possible to obtain a more excellent wearing feeling.

  Furthermore, in another aspect (aspect 6) of the present invention, in the absorbent article according to any one of aspects 1 to 5, the absorbent article is in the longitudinal direction and the width direction on the non-skin facing surface of the back sheet. The adhesive part arrangement | positioning area | region extended is provided, and the adhesive force in the said adhesion part arrangement | positioning area | region is smaller than the force required to extend the said absorbent article 30% in the said longitudinal direction.

  In the absorbent article of this aspect, since the adhesive force in the above-mentioned adhesive part arrangement region is smaller than the force required to extend the absorbent article by 30% in the longitudinal direction, the wearer wears the absorbent article being worn in the longitudinal direction. When adjusting the position while pulling strongly in the direction (that is, while extending the absorbent article by 30% or more), the absorbent article is peeled off from the underwear, and the position of the absorbent article is easily adjusted. Thereby, the absorptive article of this mode can obtain the further excellent feeling of wear.

  Furthermore, in another aspect (aspect 7) of the present invention, in the absorbent article according to aspect 5 or 6, the width in the width direction of the squeezed portion is greater than the length in the width direction of the adhesive portion arrangement region.

  In the absorbent article of this aspect, since the length in the width direction of the compressed part is larger than the length in the width direction of the adhesive part arrangement region, the wearer holds the absorbent article in the longitudinal direction while holding the rear region of the absorbent article. When pulling, the force applied locally in the above-mentioned rear non-stretchable region (that is, the force applied to the absorber gripping the absorbent article and the absorber in the vicinity thereof) is compressed with a large width in the above-described width direction. By the part, it can be propagated forward more reliably while being dispersed in the width direction of the absorber. Thereby, even if the absorbent article of this aspect adjusts the position of the absorbent article while pulling the absorbent article strongly in the longitudinal direction during position adjustment during wearing, the absorbent body in the absorbent article As a result, the absorbent performance of the absorbent article is hardly further lowered.

  Furthermore, in another aspect (aspect 8) of the present invention, in the absorbent article according to any one of aspects 1 to 7, the absorbent body has a maximum length in the width direction in the rear non-stretchable region.

  In the absorbent article of this aspect, since the absorbent body has the maximum width direction length in the above-described rear non-stretchable region, the wearer holds the absorbent article while holding the rear region of the absorbent article. When pulling in the longitudinal direction, the pulling force of the wearer can be more stably propagated to the front stretchable region through the entire width of the rear non-stretchable region having the maximum width direction length. Thereby, even if the absorbent article of this aspect adjusts the position of the absorbent article while pulling the absorbent article strongly in the longitudinal direction during position adjustment during wearing, the absorbent body in the absorbent article As a result, the absorbent performance of the absorbent article is hardly further lowered.

  According to the present invention, the wearer can exhibit excellent wear feeling and high absorption performance even when the wearer performs an operation such as walking, and the absorption performance does not easily decrease even if the position is adjusted during wearing. A sex article can be provided.

FIG. 1 is a plan view of a sanitary napkin 1 according to an embodiment of the present invention as viewed in the thickness direction from the top sheet side. FIG. 2 is a plan view of the sanitary napkin 1 according to an embodiment of the present invention as viewed in the thickness direction from the back sheet side. Figure 3 is an end view of the longitudinal section of the sanitary napkin 1 according to one embodiment, along the widthwise central axis C _L extending in the longitudinal direction of the present invention. FIG. 4 is a plan view of the absorbent body 22 used in the sanitary napkin 1 according to one embodiment of the present invention in an unextended state (natural state). FIG. 5 is a plan view schematically showing an extended state of the absorbent body 22 used in the sanitary napkin 1 according to the embodiment of the present invention. Figure 6 is an end view of a section of the extended state of the sanitary napkin 1 shown schematically, along the widthwise central axis C _L extending in the longitudinal direction L in accordance with an embodiment of the present invention. FIG. 7 is a schematic diagram for explaining a method for measuring the adhesive strength of the adhesive portion arrangement region arranged on the non-skin facing surface of the back sheet.

  Hereinafter, preferred embodiments of the absorbent article of the present invention will be described in detail with reference to the drawings. In this specification, unless otherwise specified, “objects placed on a horizontal surface in an unfolded state (for example, absorbent articles, absorbent main bodies, absorbent bodies, etc.) are targeted from the upper side in the vertical direction. “Viewing in the thickness direction of an object” is called “plan view”. In particular, when the object is an absorbent article, viewing the absorbent article in the thickness direction from the top sheet side in a state where the absorbent article is unfolded may be simply referred to as “plan view”.

Various directions and the like used in this specification are as follows unless otherwise specified.
In this specification, “longitudinal direction” refers to “a direction in which the length of a vertically long object in plan view is long”, and “width direction” refers to “a direction in which the length of a vertically long object in plan view is short (short side). Direction) ”and“ thickness direction ”means“ perpendicular direction with respect to the object placed on the horizontal plane in the unfolded state ”. The longitudinal direction, the width direction, and the thickness direction are orthogonal to each other.
Further, in the present specification, "the one side that is relatively proximal to the abdomen of the wearer when the wearer wears the absorbent article in the longitudinal direction of the absorbent article" The front side of the absorbent article, in the longitudinal direction of the absorbent article, when the wearer wears the absorbent article, the distal side relative to the wearer's abdomen (that is, relative to the wearer's back) The “other side that is relatively proximal” is referred to as “the rear side of the absorbent article”. In addition, in this specification, the front area | region and back area | region of an absorbent article point out the area | region of the front side and back area | region of an absorbent article, respectively.
Further, in this specification, "vertically elongated object (e.g., an absorbent article, the absorbent main body, the absorbent body, etc.) in the width direction of the relatively proximal with respect to the width direction central axis C _L extending in the longitudinal direction side "referred to as" inner side in the width direction ", in" a width direction of the vertically elongated object, the outer side of the "width direction relatively distal" with respect to the widthwise central axis C _L "
In this specification, unless otherwise specified, in the thickness direction of the absorbent article, “relatively proximal to the wearer's skin surface when the absorbent article is worn” is defined as “skin facing surface”. "Side", and "the distal side relative to the skin surface of the wearer when the absorbent article is worn" is referred to as "the non-skin facing surface side". In addition, in this specification, "surface on the skin facing surface side" and "non-skin facing surface side" of various members constituting the absorbent article (for example, a surface sheet, an absorbent body, a back sheet, an elastic sheet, etc.) The “surface” is simply referred to as “skin facing surface” and “non-skin facing surface”, respectively.
In the present specification, “when wearing” means that the wearer wears the absorbent article (that is, when the wearable state is formed) and maintains that state (wears). "While wearing" is synonymous.

FIG. 1 is a plan view of a sanitary napkin 1 (absorbent article) according to an embodiment of the present invention as viewed in the thickness direction from the surface sheet side, and FIG. It is the top view seen in the thickness direction from the back sheet side in the state where it developed. Further, FIG. 3, the sanitary napkin 1 is an end view of a longitudinal section along the widthwise center axis C _L extending in the longitudinal direction. 1 to 3, the upper side of the drawing corresponds to the front side of the absorbent article, and the lower side of the drawing corresponds to the rear side of the absorbent article.

  As shown in FIGS. 1 and 2, the sanitary napkin 1 according to this embodiment has a vertically long outer shape having a longitudinal direction L and a width direction W in plan view. A vertically long absorbent main body 2 having a longitudinal direction and a width direction, and a pair of substantially trapezoidal flaps extending outward in the width direction at a position closer to the front side of the central portion in the longitudinal direction of the absorbent main body 2 It is comprised by the part 3, 3 '.

As shown in FIGS. 1 to 3, the absorbent main body 2 has a liquid-permeable surface sheet 21 located on the skin facing surface side and a liquid impermeable surface located on the non-skin facing surface side in the thickness direction T. The back sheet 23, the absorbent body 22 having a plurality of slits S positioned between the sheets and extending in the width direction W, and the absorbent body 22 and the back sheet 23 in the rear region A ₃ of the sanitary napkin 1. A plurality of adhesive portions that are disposed between and extend at least in the longitudinal direction L, and are disposed on the non-skin facing surface of the back sheet 23 and extend continuously or intermittently in the width direction W. 9 and is configured so that liquid excretion such as menstrual blood and urine discharged from the wearer can be absorbed and held by the absorbent body 22 while penetrating in the thickness direction T. Yes.
On the other hand, as shown in FIGS. 1 and 2, the pair of flap portions 3, 3 ′ has a topsheet 21 that extends outward in the width direction W from the absorbent main body portion 2 in the thickness direction T, and A back sheet 23 extended outward from the absorbent body 2 in the width direction W, and an adhesive part 4 for fixing clothes (underwear) extending in the longitudinal direction L disposed on the non-skin facing surface of the back sheet 23; 4 '.

In addition, when the sanitary napkin 1 is worn, the non-skin facing surface of the absorbent main body 2 is attached to the skin facing surface of the wearer's underwear via the adhesive portion 9, and then the pair of flap portions 3, 3 'is fixed to the underwear by being attached to the non-skin facing surface of the underwear via the adhesive portions 4 and 4' while being folded back to the non-skin facing surface side of the underwear. Therefore, when the sanitary napkin 1 is worn, the non-skin facing surfaces of the pair of flap portions 3 and 3 ′ are surfaces facing the wearer's skin surface.
Here, the adhesive used for the adhesive part 9 in the absorbent main body 2 and the adhesive parts 4 and 4 'in the flap parts 3 and 3' for fixing the sanitary napkin 1 to the wearer's underwear is respectively physiological. If it can fix the napkin 1 for a wearer's underwear, it will not restrict | limit, For example, arbitrary adhesives, such as a styrene-type polymer, can be used. In addition, since a pair of above-mentioned flap part is not an essential component in this invention, the absorbent article of this invention does not need to have the said pair of flap part.

In the sanitary napkin 1 according to the present embodiment, as shown in FIG. 1, the absorption main body 2 has a front end edge 5 in the longitudinal direction L located on the front side of the sanitary napkin 1 in plan view, A rear end edge 6 in the longitudinal direction L located on the rear side of the sanitary napkin 1, and between the end edges 5 and 6, the sanitary napkin 1 along the longitudinal direction L. the front region a ₁ located on the front side, a back region a ₃ located on the rear side of the sanitary napkin 1, and corresponding to the excretion area a ₂ located between these regions a _1, a _3, and Have.
Each area A ₁ to A ₃ described above in FIG. 1, two imaginary straight line extending in the width direction W, i.e., in the longitudinal direction L 'of the adhesive portions 4, 4' of the pair of flap portions 3,3 both end portions 7,8,7 ', 8' and the first virtual straight line L ₁ extending in the width direction W so as to include a pair of first end portions 7 of the 'located on the front side in the longitudinal direction L of each adhesive Extending in the width direction W so as to include a pair of second end portions 8 and 8 ′ located on the rear side in the longitudinal direction L of both end portions 7, 8, 7 ′ and 8 ′ in the longitudinal direction L of the portions 4 and 4 ′. a second virtual straight line L _2, are respectively divided by.

  Here, in the present specification, the “excretion opening-corresponding area” refers to an area facing or abutting the wearer's excretion opening when the absorbent article is worn, and the type and use of the absorbent article (specifically, Is an area that is appropriately set for each type of absorbent article according to the type of liquid excreta such as urine, feces, menstrual blood, the age and sex of the intended wearer. It should be noted that the excretory opening corresponding region is usually absorbed in a plan view when the absorbent article has a substantially central part in the longitudinal direction or a position closer to the front side (for example, if the absorbent article has an absorbent main body part and a flap part). In the main body, when the absorbent article is a position closer to the front side that overlaps with the flap in the width direction, the absorbent article has a constricted portion that is constricted inward in the width direction at a substantially central portion in the longitudinal direction. Is a position corresponding to the constricted portion in the absorbent main body portion in plan view, and when the absorbent article is composed of an oblong absorbent main body portion, the longitudinal direction extending in the width direction of the absorbent main body portion The longitudinal length of the absorbent article is about 1/3 or more of the longitudinal length of the absorbent article, and the width of the absorbent article is about 1/3 or more of the overall length of the absorbent article. Set to have a direction length For example, if the absorbent article of the napkin such as for night, the longitudinal length of the corresponding to the excretion area, also be set to be less than 1/3 of the entire longitudinal length of the absorbent article.

The sanitary napkin 1 according to this embodiment, as shown in FIGS. 1 and 3, located between the topsheet 21 and the backsheet 23 in the back region A ₃ described above, stretch in at least the longitudinal direction L comprises a stretchable sheet 24 having the sex, the absorber 22, in corresponding to the excretion area a ₂ of the above, the non-stretchable region N ₂ extending across the widthwise central axis C _L extending in the longitudinal direction L together comprising, in the rear area a _3, and stretchable region E _a that overlaps the longitudinal direction L and extend in the width direction W and stretchable sheet 24 in the thickness direction T, and adjacent to the rear of the expansion region E _a absorption wherein a rear non-stretchable region N ₃ extending in the entire width of the body 22, and further, the rear non-stretchable region N _3, as shown in FIGS. 1 and 3, the topsheet 21 and the absorber 22 including the compression section C _P to integrate It is configured as follows.

Sanitary napkin 1 according to this embodiment, the absorbent body 22 comprises a non-stretchable region N ₂ described above in corresponding to the excretion area A ₂ (i.e., configuration hardly deformed corresponding to the excretion area A ₂ of the sanitary napkin 1 is together with and) is, at least the longitudinal direction L is telescopic including stretchable region E _a (i.e., the back region a ₃ of the sanitary napkin 1 is stretchable or curved deformed along the longitudinal direction L in the rear area a ₃ Therefore, when the wearer performs an operation such as walking, the wearer's buttocks move alternately from left to right when the wearer performs an operation such as walking. even force is applied in the direction in which the sanitary napkin 1 is twisted in a _3, the stretchable region E _a in the back region a ₃ is following the movement of the wearer is deformed in a direction to twist the above More, it is possible to maintain a state where the back region A ₃ in close contact with the skin surface of the wearer (i.e., it is possible to obtain an excellent wearing feeling). In addition, the sanitary napkin 1 is to become difficult to direction of propagation of the forces twists the above is buffered by the deformation of the rear area A ₃ on the excretion corresponding region A ₂ described above, in the excretion portion corresponding region A ₂ Can easily maintain the shape of the absorbent body 22 and can stably absorb the liquid excreta discharged from the wearer over a long period of time (that is, can exhibit high absorption performance).
Further, the sanitary napkin 1 comprises a rear non-stretchable region N ₃ where the absorber 22 extends in the entire region in the width direction of adjacent and absorber 22 in the back region A ₃ in the rear of the aforementioned flex region E _A, further , the rear non-stretchable region N ₃ contains a compression unit C _P to integrate topsheet 21 and the absorbent body 22 (i.e., as the rigidity of the rear portion is higher in the rear region a ₃ of the sanitary napkin 1 configured) for, when adjusting the position of the sanitary napkin 1 by gripping the rear area a ₃ of the sanitary napkin 1 during wear wearer, to extend the sanitary napkin 1 in the longitudinal direction L Even if the position of the sanitary napkin 1 is adjusted (that is, while pulling strongly in the longitudinal direction L), the force applied to the absorbent body 22 in the portion gripped by the wearer or in the vicinity thereof is applied to the compressed portion _CP. as well as While dispersing in the entire width of the absorbent body 22 by the rear non-stretchable region N ₃ extending in the entire width of the absorbent body 22, the stretchable region E _A of the absorber 22 can be extended along the longitudinal direction L . Thereby, even if position adjustment is performed during wear, sanitary napkin 1 is hard to break absorber 22 and, as a result, absorption performance is hard to fall.
From the above, the sanitary napkin 1 according to the present embodiment can exhibit excellent wear feeling and high absorption performance even when the wearer performs an operation such as walking, and performs position adjustment during wearing. However, the absorption performance is hardly lowered.

  Hereinafter, various members constituting the absorbent article of the present invention will be described in more detail using the sanitary napkin 1 according to the above-described embodiment.

[Surface sheet]
In the sanitary napkin 1 according to the present embodiment, as shown in FIGS. 1 and 3, the topsheet 21 is a region extending from the front region A ₁ to the rear region A ₃ of the sanitary napkin 1 (specifically, the longitudinal direction). (Region extending from the front end edge 5 to the rear end edge 6) of the L), it is disposed on the skin facing surface side in the thickness direction T, and is configured by a liquid-permeable sheet member that can directly contact the wearer's skin surface. ing. Such a liquid-permeable sheet member is not particularly limited as long as it has various properties (for example, liquid permeability, flexibility, touch, etc.) that can be used as a surface sheet of an absorbent article. Nonwoven fabrics such as spunlace nonwoven fabrics and air-through nonwoven fabrics formed using hydrophilic fibers such as thermoplastic resin fibers that have been subjected to a chemical treatment can be used. Especially, it is preferable that the surface sheet used for the absorbent article of the present invention uses a liquid-permeable sheet member having stretchability or extensibility in at least one direction (direction corresponding to the longitudinal direction L of the absorbent article). When such a liquid-permeable sheet member is used as the top sheet, the absorbent article is more easily deformed in accordance with the wearer's movement (that is, has excellent dynamic fit). The feeling of wearing can be further improved.

  The liquid-permeable sheet member having the above-described stretchability is not particularly limited as long as it has stretchability in at least one direction, for example, stretchability of a urethane resin spunbond nonwoven fabric subjected to a hydrophilic treatment. Nonwoven fabric: Laminated nonwoven fabric having a concavo-convex structure in which a urethane resin spunbond nonwoven fabric and air-through nonwoven fabric stretched in at least one direction are integrated by embossing or the like; Urethane resin or ethylene-vinyl acetate copolymer resin (EVA) A perforated film made of an elastic resin and the like and subjected to a hydrophilic treatment can be suitably used.

On the other hand, the liquid-permeable sheet member having the above-described extensibility is not particularly limited as long as it has extensibility in at least one direction. For example, a nonwoven fabric having a concavo-convex structure that can be extended in one direction is preferable. Can be used. As such a concavo-convex structure, for example, in a plan view, the nonwoven fabric extends in a second direction (for example, the width direction of the surface sheet) perpendicular to the first direction (for example, the longitudinal direction of the surface sheet) in which the nonwoven fabric extends, and A cross-sectional shape along the first direction, which is configured by a plurality of ridges arranged at predetermined intervals in the first direction and a plurality of groove portions positioned between adjacent ridges and extending in the second direction. And a concavo-convex structure having a substantially waveform or zigzag shape. In addition, the above-mentioned ridge part protrudes from one surface of a nonwoven fabric in the thickness direction of a nonwoven fabric (that is, when a nonwoven fabric is used for a surface sheet, it protrudes toward the skin opposing surface side), and the above-mentioned concave groove part Has a structure protruding from the other surface of the non-woven fabric in the thickness direction of the non-woven fabric (that is, when the non-woven fabric is used as a top sheet, it is recessed toward the non-skin facing surface).
In the present invention, the structure that can be adopted as the concavo-convex structure that can be extended in one direction described above is not limited to the structure described above, and is disclosed in, for example, Japanese Patent No. 5829349 and Japanese Patent No. 5829326. A concavo-convex structure constituted by a plurality of convex portions (groove portions) and a groove portion having a plurality of concave portions can be suitably employed.

  The method for forming the stretchable concavo-convex structure as described above on a liquid-permeable sheet member such as a nonwoven fabric is not particularly limited. For example, a method of continuously blowing a gas (for example, air) on a fiber web or compression Any shaping method such as a molding method or a gear stretching method can be employed.

  In addition, the liquid permeable sheet member having stretchability or extensibility that can be used as the surface sheet may have the above-described stretchability or extensibility in the entire region (the entire surface in a plan view). The region including at least the region overlapping the stretchable region of the absorber in the rear region in the thickness direction preferably has the above-described stretchability or extensibility, and further, the stretch of the absorber in the rear region. More preferably, only the region overlapping with the region in the thickness direction has the above-described stretchability or extensibility. When the topsheet has stretchability or extensibility only in such a specific region, the absorbent article is in such a specific region (particularly in a region overlapping with the stretchable region of the absorber in the thickness direction). In addition, since it becomes easier to deform in accordance with the movement of the wearer, it is possible to more surely realize a state in which the region is in close contact with the skin surface of the wearer, while in the excretion opening corresponding region of the absorbent article, The above-described twisting force applied to the rear region of the absorbent article is difficult to propagate, and the shape of the absorbent main body in the excretory opening corresponding region is more easily maintained. It can be absorbed stably.

The dimensional shape of the topsheet is not particularly limited as long as it can cover the skin-facing surface of the absorbent body, and has an arbitrary dimensional shape according to the size, sex, use, etc. of the person wearing the absorbent article. Can be adopted. The basis weight of the topsheet is not particularly limited as long as it does not inhibit the effects of the present invention, for example, it can be adopted a basis weight in the range of ^{5g / m 2 ~100g / m 2} , a liquid-permeable basis weight or within the range in view of the 20g / m ² ~50g / m ² flexibility is preferred. The basis weight can be measured according to JIS L 1906 5.2.

  Further, the thickness of the surface sheet is not particularly limited as long as the effect of the present invention is not impaired, and for example, a thickness within the range of 0.001 mm to 5.0 mm can be adopted. From the point of these, the thickness within the range of 0.01 mm-3.0 mm is preferable, and also the thickness within the range of 0.1 mm-1.0 mm is more preferable.

In addition, the thickness of sheet members, such as a surface sheet, can be obtained with the following measuring methods.
<Method for measuring thickness of sheet member>
(1) A sample sheet having a predetermined size (for example, 100 mm × 100 mm) is cut out from the sheet member to be measured.
(2) The cut sample sheet is set in an automated compression tester “KES FB-3A” manufactured by Kato Tech Co., Ltd., and the thickness (mm) when the pressure on the sample sheet by the measurement terminal of the tester is 49 Pa. ) And the thickness (mm) is taken as the thickness of the sample sheet.

[Absorber]
Next, the absorber which can be used for the absorbent article of the present invention will be described. FIG. 4 is a plan view of the absorbent body 22 used in the sanitary napkin 1 in a non-expanded state (natural state), and FIG. 5 is a plan view of the absorbent body 22 in an expanded state. 6 shows, the extended state of the sanitary napkin 1 shown schematically an end view of a cross section along the widthwise center axis C _L extending in the longitudinal direction L.

In the sanitary napkin 1 according to the present embodiment, the absorbent body 22 is disposed between the top sheet 21 and the back sheet 23 in the thickness direction T, as shown in FIG. It is an absorptive member which has a function which absorbs and holds a person's liquid excrement. As shown in FIG. 4, the absorbent body 22 has a vertically long outer shape in which the end edges on the front side and the rear side in the longitudinal direction L protrude in an arc shape on the front side and the rear side, respectively, in a plan view. as shown in FIG. 1, arranged in a central region including the widthwise center axis C _L extending in the longitudinal direction L of the sanitary napkin 1, so as to extend from the front region a ₁ described above over the back region a ₃ Has been.
In the present invention, the absorber is not limited to the above-described embodiment, and the absorber may have any outer shape such as a rectangle, an oval, an hourglass, etc. The article may be arranged so as to be biased toward the front or rear in the longitudinal direction of the article.

In the present embodiment, as shown in FIG. 1, the absorbent body 22 has a width direction central axis C _L extending in the longitudinal direction L in the above-described front area A ₁ and excretory opening corresponding area A ₂ in a plan view. and has a front non-stretchable region N ₁ and a non-stretchable region N _2, in the back region a ₃ described above, the longitudinal direction L and the width direction W extending in and above the stretchable sheet 24 thickness which extends across It is configured to have a stretchable region E _a that overlaps the direction T.
Furthermore, the absorbent body 22 has in plan view, a rear non-stretchable region N ₃ extending in the entire width of the stretchable region E _A of the adjacent rearward and absorber 22 in the back region A ₃ above ing. If the absorber 22 has such a rear non-stretchable region N ₃ , the strength of the absorber 22 can be secured to a certain degree in the rear region A ₃ of the sanitary napkin 1. also wearer during justifications pulling strongly grip the rear area a ₃ of the sanitary napkin 1, the absorbent body 22 is unlikely to tear, it is possible to prevent a decrease in absorption performance of the sanitary napkin 1. Further, by such a rear non-stretchable region N ₃ extends the entire width of the absorbent body 22, when the positioning of the sanitary napkin 1, portions or the vicinity thereof the wearer is holding It becomes easy to disperse the force applied to the absorber 22 of the portion over the entire width direction of the absorber 22.

Here, each non-stretchable region above the absorbent body 22 (i.e., the front region A front non-stretchable regions N ₁ of _1, corresponding to the excretion non-stretchable in the region A ₂ region N ₂ and a rear non-stretchable region in the back region A ₃ N _3), and more specifically described stretchable region _{E A.}

In the present embodiment, each non-stretchable region N _{1 to} N ₃ of the absorbent body 22 is not provided with stretch means such as a plurality of slit portions described later, and has substantially no stretchability (that is, (Non-stretchable) region. In this embodiment, such non-stretchable regions, as described above, in plan view, in the front region A ₁ and corresponding to the excretion area A _2, extends across the width direction center axis C _L extending in the longitudinal direction L is provided as a front non-stretchable regions N ₁ and non-stretchable regions N _2, further, in yet rear side of the stretchable region E _a within the rear area a _3, in the entire region in the width direction of the absorbent body 22 (i.e., in FIG. 4 provided from the edge e ₁ of one side in the width direction W of the absorber 22 as a rear non-stretchable region N ₃ to the other side until the edge e ₂₎ extends. Incidentally, provided to forward non-stretchable regions N ₁ and the non-stretchable region N ₂ described above, continuous in the widthwise central portion of the absorbent body 22 (i.e., the portion extending over the width direction center axis C _L extending in the longitudinal direction L) It has been.
In the absorbent article of the present invention, the non-stretchable region of the absorbent body is not particularly limited as long as the non-stretchable region of the absorbent body is provided in a region adjacent to the rear of the stretchable region in at least the excretory opening corresponding region and the rear region. The stretchable region may not be provided in the front region, but the non-stretchable region is preferably provided across the excretory opening corresponding region from the front region as in the above-described embodiment. When the non-stretchable region of the absorbent body is provided across the region corresponding to the excretory opening from the front region, the shape of the absorbent body can be more easily maintained (that is, the region that is difficult to deform) can be secured more widely. Absorbs liquid excretion discharged from the wearer more stably and more reliably over a long period of time in the above-mentioned front region and the region corresponding to the excretion port, which are relatively less affected by the movement of the wearer and the growth of the underwear. be able to.

  Furthermore, in the present invention, the rear non-stretchable region in the rear region is a region including an edge at the rear of the absorber (that is, a longitudinal edge on the rear side of the absorber) as in the above-described embodiment. Preferably there is. When the rear non-stretchable region is such a region, the wearer can easily grip the above-described rear non-stretchable region when adjusting the position of the absorbent article, and the above-described non-stretchable region is achieved by having the rear non-stretchable region. The effect (that is, the effect that the absorbent body is hardly broken and consequently the absorption performance of the absorbent article is hardly lowered) can be more reliably exhibited.

  As described above, in the present invention, the outer shape of the absorber is not particularly limited, but the absorber preferably has the maximum widthwise length in the rear non-stretchable region in the rear region. . When the absorbent body has the maximum length in the width direction in the above-described rear non-stretchable region, the wearer pulls the absorbent article in the longitudinal direction while holding the rear area of the absorbent article. Can be more stably propagated to the front stretchable region through the entire width of the rear non-stretchable region having the above-mentioned maximum width direction length, so that the absorber is more difficult to break. As a result, the absorbent performance of the absorbent article is further unlikely to decrease.

Furthermore, in the sanitary napkin 1 according to the above-described embodiment, stretchable region E _A of the absorber 22, as shown in FIGS. 1, 3 and 4, the rear region overlapping the elastic sheet 24 in the thickness direction T in the a _3, it has a plurality of slits S extending in the width direction W as elastic means, such plurality of slits S is applied from the wearer (or take over a stretch underwear) external forces (Incidentally, the external force includes an external force of the external force and contraction direction of the extending direction.) and stretchable sheet by opening and closing by the contraction force applied from the 24, stretchable region E _a of the absorber 22 described above in at least the longitudinal direction L It can be expanded and contracted.
Absorber 22 and has such a stretchable region E _A within the rear area A ₃ which is a region corresponding to the buttocks of the wearer when worn, in cooperation with the elastic sheet 24 described above, the physiological since the back region a ₃ of use the napkin 1 (absorbent article) is liable to deform in the direction screw as easily and axis the longitudinal direction L and stretchable or warps in the longitudinal direction L, the wearer such as walking when performing an operation, even if force is applied in the direction in which the sanitary napkin 1 is twisted in the back region a ₃ above by the buttocks of the wearer moves to the right and left alternately, the absorber and the stretchable sheet 24 of the above by the stretchable region E _a 22 is deformed in a direction in which twists above and follow the movement of the wearer, to maintain the state where the back region a ₃ of the sanitary napkin 1 is in close contact with the skin surface of the wearer Can do. In addition, the sanitary napkin 1, since the direction of the force twists the above is not easily propagated buffered by the deformation of the rear area A ₃ on the excretion corresponding regions A _2, in the excretion portion corresponding region A _2, The shape of the absorbent body 22 can be easily maintained, and liquid excreta discharged from the wearer can be stably absorbed over a long period of time.
In addition, when the absorbent body occupying most of the thickness of the absorbent body portion in the absorbent article has a plurality of slit portions as described above, the absorbent body portion is flexible as well as the absorbent body (in particular, the thickness). (Excellent flexibility in the direction and width direction), it is possible to exhibit further excellent body compatibility (that is, fit) as an absorbent article.

  Here, in this specification, the “slit part” means a cut that penetrates the absorber in the thickness direction, and the direction in which the slit part extends (that is, the longitudinal direction of the slit part) is orthogonal to the direction. Direction (that is, the width direction of the slit portion). In the present embodiment, the longitudinal direction of the slit portion S is parallel to the width direction W of the sanitary napkin 1.

In the present embodiment, a plurality of slits S provided in the stretchable region E _A of the absorber 22, as shown in FIG. 4, in plan view, the slit portions S between the longitudinal direction L that is adjacent in the longitudinal direction L Are arranged so as to partially overlap (in other words, the slit portions S adjacent in the longitudinal direction L do not completely overlap in the longitudinal direction L). When the plurality of slit portions are arranged in this way, absorption occurs when the stretchable region of the absorbent body formed by the plurality of slit portions is deformed in the twisting direction or the longitudinal direction by the wearer's operation or the like. It is difficult for the body to be torn at the slit portion and to be broken in the longitudinal direction. In addition, in the absorber, a portion where the slit portion does not exist can exhibit a predetermined absorption performance. Therefore, when such a portion is arranged without being unevenly distributed in the stretchable region of the absorber, the stretchable region Can also exhibit good absorption performance.

Further, in the present embodiment, a plurality of slits S in the stretchable region E _A of the absorber 22, as shown in FIG. 4, in the stretchable region E _A, slit portions present small that there are slits S of the predetermined number and the region a _S, are arranged so as to have a slit portion absence small area a _N of slits S are not present, the. Further, as shown in FIG. 4, the slit region non-existing small region _AN is, in plan view, from one end (one end on the left side in FIG. 4) to the other end (the one on the right side in FIG. 4) front side to the one end) (the first absence small area a _N1 extending upward side) in FIG. 4, one end (Figure in the width direction W of the first intersect the absence small area a _N1 and the absorber 22 4 and a second non-existing small area A _N2 extending rearward (downward in FIG. 4) from the other end (right end in FIG. 4) to the other end (lower end in FIG. 4). _S is the area surrounded by the first absence small area a _N1 above the second absence small area a _N2, or second non-existence and the first absence small area a _N1 in the above small region a _N2 to the longitudinal extending direction L in the width direction edges e _1, e ₂ of the absorbent body 22 and It is disposed in an area surrounded by Te.

When the plurality of slit portions S are arranged in this way, the absorbent body has slit portion non-existing small regions A _N extending in the two specific directions (that is, the first non-existing small region A _N1 and the second non-existing region). by having a small area a _N2), the strength and absorption performance as an absorber can be sufficiently secured, also having a slit portion existing small area a _S surrounded by the slit portion absence subregion a _N As a result, as shown in FIG. 5, the entire absorbent body 22 can be extended uniformly, and the expansion / contraction range can be made longer. As a result, even when the large operation or the like of the wearer, since the force applied to the absorbent body 22 can be sufficiently buffered, the more reliably the wearer the back region A ₃ while maintaining good absorption performance Can adhere to the skin surface.

  In the absorbent article of the present invention, the arrangement form of the plurality of slit portions in the absorbent body is not limited to that of the above-described embodiment, and the above-mentioned plurality of slit portions are, for example, slits having a predetermined number of slit portions. The part existence small area may be arranged in an area surrounded by the slit part nonexistence small area provided in a grid shape. The plurality of slit portions can be arranged in an arbitrary pattern as long as the effect of the present invention is not impaired, but it is preferable that the slit portions are arranged so as not to be aligned on the entire length in the width direction of the absorber. When the plurality of slit portions are arranged in this manner, it is possible to prevent the plurality of slit portions arranged in a straight line from acting like a perforation line and tearing the absorber.

In the sanitary napkin 1 according to the present embodiment, as shown in FIG. 1, the absorbent body 22 has an outer side in the width direction with respect to the non-stretchable region N ₂ described above in the excretory opening corresponding region A ₂ . has a side slit portion existing region having a plurality of slits similar to the plurality of slits S in the rear region a ₃ and described above located in the absorber 22, the side slits existing region , At least in the longitudinal direction L. Although such a configuration is not an essential configuration in the absorbent article of the present invention, if the absorbent body has such a side slit portion existence region as an extension region, the wearer's walking or the like causes an operation. or direction of the force is propagated to twisted from the rear area a ₃ described above, or, even if such or force is applied in the width direction W of the absorbent article by the groins of the wearer, there lateral slits of above Since these forces can be buffered by the extension or deformation of the region, the non-stretchable region (that is, the non-stretchable region N ₂ in the above-described embodiment) in the central portion in the width direction in the excretory opening corresponding region of the absorber. The shape is more easily maintained. As a result, the liquid excretion discharged from the wearer can be more stably absorbed in the excretion opening corresponding region.

  Here, in this specification, “elongation” means 5.0 N in two predetermined directions opposite to each other according to the method described in “6.3 Tensile strength and elongation” of JIS L 1913: 2010. When pulled by force, it stretches 3% or more with respect to the length (100%) of the natural state (that is, the state before stretching) without breaking, ie, the length after stretching is 103% or more. The term “stretching” means that the object is stretched by a predetermined force in a predetermined two directions opposite to each other and stretched by 10% or more (that is, the length after stretching becomes 110% or more). And then contracting 7% or more when the force is released (ie, the length after contraction is the length of the object in the natural state (the state before extension) (100%). 100% or more and 103% or less) means.

In the above embodiment, stretchable region E _A of the absorber 22 is applied from the wearer (or take over a stretch underwear) external forces (Note that this external force, the external force in the extending direction and the contraction direction of the external force And the plurality of slit portions S are opened and closed by the contraction force applied from the stretchable sheet 24, and can be stretched at least in the longitudinal direction L. The stretchable region of the absorbent body is not limited to the one formed by the plurality of slit portions, and the stretchable region of the absorbent body can be given any stretchability, for example, a part of the absorbent body is made of a stretchable material. It can be formed by means.

In the present embodiment, slit portions S of the absorber 22 (i.e., the slits S formed stretchable region E _A and the side slit portions existence region of the absorbent body 22), as shown in FIG. 4, etc. In addition, although it is formed in a substantially straight plan view shape extending in the width direction W of the sanitary napkin 1, it is not limited to such an aspect in the present invention, and the slit portion does not impair the effects of the present invention. As long as it can be formed in any plan view shape. Examples of such planar view shapes include arc shapes, V shapes, waveforms, zigzag shapes, and the like.

  Furthermore, in the present invention, the length in the longitudinal direction of the slit portion of the absorber (that is, the length in the direction in which the slit portion extends) is not particularly limited, but is preferably in the range of 3 mm to 50 mm, more preferably It is in the range of 5 mm to 15 mm. When the length is 3 mm or more, the stretchable region of the absorber is further easily deformed in the twisting direction, and the stretchable region can be sufficiently stretched in the longitudinal direction L. The body can be moderately reduced in rigidity. In addition, when the length is 50 mm or less, when the absorber receives a force from the outer side in the width direction, it is difficult for the slit portion to open and tear, and as an absorber. Good durability can be ensured.

  In addition, the means in particular which forms a some slit part in an absorber is not restrict | limited, Arbitrary cutting means can be employ | adopted. For example, while transporting the absorbent body manufactured by an arbitrary manufacturing method by a transport means such as a belt conveyor, a plurality of a plurality of provided in a predetermined arrangement pattern on the peripheral surface of the rotating cutting roll on the upper surface of the absorbent body A plurality of slit portions as described above can be formed in the absorbent body by pressing the cutting blade to penetrate.

  In the absorbent article of the present invention, the absorbent body is not particularly limited except that the absorbent body has the above-described stretchable region and non-stretchable region (including the back non-stretchable region), and any known in the art. Absorbers can be used. Examples of such an absorbent include those in which an absorbent material containing a water-absorbing fiber such as pulp and / or a superabsorbent polymer is covered with a liquid-permeable covering sheet such as at least one tissue. .

  The thickness of the absorber is not particularly limited as long as it does not hinder the effects of the present invention. For example, a thickness in the range of 0.1 mm to 10 mm can be adopted, but stretchability, absorbability, flexibility, etc. From this point, a thickness in the range of 0.3 mm to 3 mm is preferable.

[Elastic sheet]
In the sanitary napkin 1 according to this embodiment, the stretchable sheet 24 that can be stretched at least in the longitudinal direction L is, as shown in FIGS. 1 and 3, a rear region A that is a region corresponding to the wearer's buttocks. ₃ , the rear region A ₃ (more specifically, the rear region A) of the sanitary napkin 1 is disposed between the absorber 22 and the back sheet 23 (that is, the non-skin facing surface side of the absorber 22). within _3, a stretchable sheet member for imparting elasticity to a region) corresponding to the stretchable region E _a of the absorber 22. Incidentally, stretchable sheet 24, as described above, is disposed at a position overlapping the stretchable region E _A and the thickness direction T in the back region A ₃ of the absorbent body 22 do not overlap in the stretchable region E _A and the thickness direction T Not placed in the part. When the stretchable sheet 24 is thus arranged in the back region A _3, while ensuring the stretchability in the back region A _3, stretching to the back region A ₃ of the sanitary napkin 1 in the longitudinal direction L It can be configured to be easily deformed to bend and to be easily deformed in a direction that is twisted about the longitudinal direction L, and the above-described effects obtained by such a configuration can be more reliably exhibited.

  The above-mentioned stretchable sheet is not particularly limited as long as it is a stretchable sheet member that can be stretched in at least one direction (the direction corresponding to the longitudinal direction L of the absorbent article). For example, thermoplastics such as urethane resin and polyolefin resin An elastic film formed from a resin; an elastic film formed from a polyester-based resin can be used.

  Further, in the absorbent article, the position in the thickness direction where the above-described stretchable sheet is disposed is not particularly limited as long as it is between the topsheet and the backsheet, and the absorber and the backsheet as in the above embodiment. May be disposed between the top sheet and the absorbent body, but from the point that a predetermined absorption performance can be obtained even in the rear region of the absorbent article, It is preferable to arrange | position between an absorber and a back surface sheet like the above-mentioned embodiment.

  In the present invention, the above-described stretchable sheet is not an essential component as long as the stretchable region of the absorbent body is configured to be stretchable. Therefore, the absorbent article of the present invention includes the stretchable sheet. It does not have to be provided.

[Back sheet]
In the sanitary napkin 1 according to the present embodiment, as shown in FIGS. 1 to 3, the back sheet 23 is a region extending from the front region A ₁ to the rear region A ₃ of the sanitary napkin 1 (specifically, the longitudinal direction). Leakage of liquid excretion such as menstrual blood and urine that is disposed on the non-skin facing surface side in the thickness direction T in a region extending from the front edge portion 5 to the rear edge portion 6 of L) It is comprised by the liquid-impermeable sheet member to prevent. Such a liquid-impermeable sheet member is not particularly limited as long as it has various characteristics (liquid-impermeable, breathable, flexible, etc.) that can be used as a back sheet of an absorbent article, and has, for example, breathability. A known liquid-impermeable sheet member such as a resin film such as polyethylene or polypropylene, or a laminate in which a nonwoven fabric is bonded to the resin film can be used. Among such liquid-impermeable sheet members, the back sheet used for the absorbent article of the present invention is liquid-impermeable having stretchability or extensibility in at least one direction (direction corresponding to the longitudinal direction L of the absorbent article). It is preferable to use a permeable sheet member. When the liquid-impermeable sheet member having such stretchability or extensibility is used as the back sheet, the absorbent article is more easily deformed in accordance with the wearer's movement (that is, excellent in dynamic fit). Therefore, the wearing feeling of the absorbent article can be further improved.

  The liquid-impermeable sheet member having the above-described stretchability is not particularly limited as long as it has stretchability in at least one direction. For example, a stretchable sheet member similar to the above-described stretchable sheet is preferably used. Can be used. Moreover, the liquid-impermeable sheet member having the above-described extensibility is not particularly limited as long as it has extensibility in at least one direction. For example, a sheet made of a thermoplastic resin having a bellows structure that can be extended in one direction. A member etc. can be used conveniently.

In the present embodiment, as shown in FIGS. 2 and 3, the back sheet 23 is a liquid-impermeable sheet member having a bellows structure B that can extend in the longitudinal direction L in the rear region A ₃ of the sanitary napkin 1. It is configured. As shown in FIGS. 2 and 3, the bellows structure B described above has a plurality of linear protrusions B extending in the width direction W of the sanitary napkin 1 and arranged in the longitudinal direction L at predetermined intervals in plan view. ₁ and a plurality of linear grooves B ₂ located between adjacent linear protrusions B ₁ and extending in the width direction W, and the cross-sectional shape along the longitudinal direction L is substantially It has a zigzag shape. Incidentally, the linear-shaped convex portion B ₁ of the above, as shown in FIG. 3 has a protruding skin-facing surface side structure in the thickness direction of the backsheet 23, a linear groove portion B ₂ described above, In the thickness direction of the back sheet 23, the back sheet 23 has a structure that is recessed toward the non-skin facing surface.

With such backsheet 23 has a longitudinal direction L in extendable bellows structure B in the rear area A _3, obtained more reliably stretchability in the longitudinal direction L in the back region A ₃ by the bellows structure B it is possible, it is possible to obtain a state in which the rear region a ₃ are in close contact with the skin surface of the wearer more reliably, the direction of the force twists the above applied to the back region a ₃ are adjacent excretion hardly propagated to the corresponding region a _2.

In addition, in the case of the above-described embodiment in which a plurality of slit portions S are formed in the absorbent body 22, liquid excrement discharged from the wearer normally reaches the back sheet 23 via the slit portions S. However, if the back sheet 23 has the bellows structure B as described above, the liquid excrement reaching the back sheet 23 is diffused in the width direction W along the groove B ₂ in the bellows structure B. Thus, the absorbent body 22 can be absorbed from a wide area on the non-skin facing surface.

  Furthermore, when the back sheet has such an accordion structure, flexibility and cushioning properties can be imparted in the thickness direction of the absorbent article, thereby further improving the feeling of wearing the absorbent article. be able to. In addition, when the back sheet that is easily visible to the wearer has such a bellows structure, the wearer indicates that the absorbent article of the present invention is a product that is particularly excellent in stretchability, fit, flexibility, and the like. There is also an advantage that it can be easily recognized.

  In the above bellows structure, the height of the convex portion (that is, the distance between the horizontal plane including the top of the convex portion and the horizontal plane including the bottom (deepest portion) of the groove) does not hinder the effect of the present invention. There is no particular limitation, and for example, a height in the range of 0.1 mm to 1.2 mm can be adopted, but in terms of extensibility, cushioning properties, liquid diffusibility, etc., 0.2 mm to 1.0 mm. A height in the range is preferable, and a height in the range of 0.4 mm to 0.8 mm is more preferable.

  Further, the pitch of the bellows structure described above (that is, the interval (mm) between the top centers (ridge lines) of two adjacent convex portions) is not particularly limited, and is, for example, in the range of 0.5 mm to 5.0 mm. The pitch within the range of 1.0 mm to 4.0 mm is preferable from the viewpoints of extensibility, cushioning properties, liquid diffusibility, and the like. The pitch of the bellows structure can be measured as a distance (mm) between the top centers (ridge lines) of two adjacent convex portions based on a planar photograph or planar image of the back sheet in a non-pressurized state. it can.

  In the present invention, the structure that can be adopted as the bellows structure of the back sheet is not limited to the above-described embodiment. For example, the convex part and the groove part in the above-described bellows structure are at least partially oriented in plan view. It is possible to adopt a mode of extending while changing (for example, in a wave shape or a zigzag shape), a mode in which the interval between two convex portions adjacent to each other is not constant, or the like.

  The method for forming the bellows structure as described above on the liquid-impermeable sheet member used for the back sheet is not particularly limited. For example, an arbitrary shaping method such as a compression molding method, a vacuum molding method, or a gear stretching method is used. Can be adopted.

  In addition, the liquid-impermeable sheet member having the above-described stretchability or extensibility that can be used as the back sheet may have the above-described stretchability or extensibility in the entire region (the entire surface in a plan view), It is preferable that only the region including the region overlapping with the stretchable region of the absorber in the rear region in the thickness direction has the above-described stretchability or extensibility, and further, the stretchable region of the absorber in the rear region. It is preferable that only the region overlapping in the thickness direction has the above-described stretchability or extensibility. When the back sheet has stretchability or extensibility only in such a specific region, the absorbent article (specifically, the absorbent main body portion) has such a specific region (especially, the stretchable region of the absorber). In the region overlapping with the thickness direction), it becomes easier to deform in accordance with the movement of the wearer, so that the region can be more reliably realized in close contact with the wearer's skin surface, while absorbing. In the excretion opening corresponding region of the sex goods, the above-described twisting force applied to the rear region is difficult to propagate, and the shape of the absorption main body portion in the excretion opening corresponding region is further easily maintained. The liquid excreta can be absorbed more stably.

  In the present invention, the size and shape of the back sheet is not particularly limited as long as it can prevent leakage of liquid excreta discharged from the wearer, and is suitable for the size, sex, usage, etc. of the wear target of the absorbent article. Any size and shape can be adopted. Further, the thickness of the back sheet is not particularly limited as long as the effect of the present invention is not impaired. For example, a thickness in the range of 0.001 mm to 5.0 mm can be adopted, but the liquid impermeability and flexibility are not limited. Thickness in the range of 0.003 mm to 3.0 mm is preferable from the point of property and air permeability, and the thickness in the range of 0.01 mm to 1.0 mm is more preferable.

  In the sanitary napkin 1 according to the present embodiment, the top sheet 21 and the back sheet 23 are sandwiched between the laminate of the absorbent body 22 and the elastic sheet 24 bonded to the absorbent body 22. The outer peripheral edge part of each sheet | seat is joined by the hot-melt-type adhesive agent. The joining means is not particularly limited, and in addition to the above-described adhesive, any joining means such as a heat seal method and an ultrasonic joining method can be adopted. Hot melt type such as styrene-isoprene-styrene block copolymer (SIS), styrene-butadiene-styrene block copolymer (SBS), styrene-ethylene-butylene-ethylene copolymer (SEBS), etc. It is preferable to use an adhesive.

[Pressing part]
As shown in FIGS. 1 and 3, the sanitary napkin 1 according to the present embodiment is a compressed portion C that integrates at least the topsheet 21 and the absorber 22 in the rear non-stretchable region N ₃ in the rear region A ₃ . _P. In this embodiment, compression unit C _P, as shown in FIG. 1, compression portions of the plurality of dot-like are arranged side by side so as to form the pattern. Such compression portions C _P constitutes the absorbent body unit 2, the topsheet 21, the absorbent body 22, the stretchable sheet 24 and the laminated body formed by joining the backsheet 23 stacked in this order, heating or non-heating emboss using the processing means, from the skin-facing surface of the topsheet 21 in the thickness direction T (toward the non-skin-facing surface side) is formed by compressing, the topsheet 21 at the bottom of the squeeze portion C _P, The absorber 22, the elastic sheet 24, and the back sheet 23 are integrated. Thus, the bottom of such a compressing portion C _P is relatively density is higher than other portions.

The absorbent article includes a pressing unit that integrates at least the surface sheet and the absorbent body in the rear non-stretchable region in the rear region (that is, the rigidity of the rear portion in the rear region of the absorbent article). When the wearer grips the rear region of the absorbent article being worn and adjusts the position of the absorbent article, the absorbent article is elongated in the longitudinal direction. Even if the position of the absorbent article is adjusted (while pulling strongly in the longitudinal direction), the force applied to the absorbent body in the portion gripped by the wearer or in the vicinity thereof is applied in the width direction of the compressed portion and the absorbent body. Since the stretchable region of the absorbent body can be extended along the longitudinal direction while being dispersed throughout the widthwise direction of the absorbent body by the rear non-stretchable region extending over the entire region, position adjustment is performed while wearing the absorbent article. Even absorber hardly to tear, absorbing performance of the resulting absorbent article is hardly lowered.
In addition, since such an effect is show | played if a pressing part integrates at least a surface sheet and an absorber, a pressing part is a surface sheet, an absorber, expansion-contraction like the above-mentioned embodiment. It is not necessary that all of the adhesive sheet and the back sheet are integrated.

Furthermore, in the sanitary napkin 1 according to this embodiment, compression portions C _P of the above, as shown in FIG. 1, in plan view, is disposed astride the stretchable region and a rear non-stretchable region of the absorber Yes. Although it is not essential in the absorbent article of the present invention to arrange the compressed portion in this manner, the compressed portion is worn over the stretchable region and the rear non-stretchable region. When a person pulls the absorbent article in the longitudinal direction while gripping the rear area of the absorbent article, the pulling force of the wearer is easily propagated to the stretchable area through the above-described compression part. During the position adjustment, the absorbent article can be adjusted to a more accurate position while being elongated in the longitudinal direction, and as a result, a better wearing feeling can be obtained.

  In the present invention, the shape of the compressed portion in plan view is not particularly limited, and in addition to a shape (see FIG. 1) that exhibits a predetermined pattern as in the above-described embodiment, a linear shape, a wavy shape, a zigzag shape, and a geometric shape. , Etc. can be adopted, but the compressed portion has a plan view shape in which the length in the width direction increases toward the front of the absorbent article (for example, a triangular shape with the bottom located on the front side, the rear It preferably has a heart shape or the like that tapers toward the side. When the compressed portion has such a planar view shape, when the wearer pulls the absorbent article in the longitudinal direction while grasping the rear area of the absorbent article, it is locally in the above-described rear non-stretchable area. The force applied to the absorbent body (that is, the force applied to the absorbent body in the portion holding the absorbent article and the vicinity thereof) is more reliably applied in the width direction of the absorbent body by the compressed portion having the specific planar view shape. Since it can be propagated forward while being dispersed, even when the position of the absorbent article is adjusted while strongly pulling the absorbent article in the longitudinal direction when adjusting the position of the absorbent article, the absorption in the absorbent article The body is more difficult to tear, and as a result, the absorbent performance of the absorbent article is further unlikely to be lowered.

Further, in the embodiment described above, compression portions C _P is, in plan view, are disposed so that the plan view shape symmetrical with respect to the width direction central axis C _L extending in the longitudinal direction L, the not limited to such an embodiment is the invention, compression unit, for example, it may be arranged offset to one side of the widthwise central axis C _L, or only either one side of the widthwise central axis C _L May be arranged. Further, in the embodiment described above, compression portions C _P is compression portions of the plurality of dot-like are arranged side by side so as to form the pattern, in the present invention, compression portions of the above, linear and In addition, the curved squeezed portions may be arranged alone or in any combination, and moreover, a plurality of types of patterns may be arranged in combination. As the planar view area of the pressing part increases, the absorbent body in the absorbent article becomes more difficult to break.

Incidentally, the sanitary napkin 1 according to this embodiment, in addition to the compression portions C _P described above, in plan view, in the non-stretchable region N ₂ for at least corresponding to the excretion area A _2, the width direction and extending in the longitudinal direction L two pressing groove P extending in the longitudinal direction L positioned on both sides and the absorbent main body 2 of the central axis C _L, and a P '(see Figure 1). Such squeezing groove P, P ', like the compression portions C _P of the above, constituting the absorbent body unit 2, the topsheet 21, the absorbent body 22, the elastic sheet 24 and the backsheet 23 are joined superposed in this order Is formed by squeezing the laminated body in the thickness direction T (toward the non-skin facing surface) from the surface of the top sheet 21 on the skin facing surface side using a heating or non-heating embossing means. The top sheet 21, the absorber 22 and the back sheet 23 are integrated at the bottom of the compressed grooves P and P '. Therefore, the density of the bottom part of the pressing groove parts P and P ′ is relatively higher than the other parts. Incidentally, compressed groove P described above in this embodiment, P ', as shown in FIG. 1, but extending across the front area A ₁ to the back region A _3, the thickness and the elastic sheet 24 described above is Does not overlap with direction T.

  Although it is not an essential constituent requirement in the absorbent article of the present invention to have such two compressed groove parts, if the absorbent article has such a compressed groove part, the wearer's action or the like Even if the above-mentioned twisting force is applied to the rear region of the absorbent article or the force is applied in the width direction of the absorbent main body by the wearer's buttocks, the center of the excretory mouth corresponding region is particularly In a region to be a part (that is, a region sandwiched in the width direction by two compressed groove portions), the shape of the absorbent main body portion is more easily maintained by the rigidity of the compressed groove portion, so liquid excretion discharged from the wearer Objects can be absorbed more stably and steadily.

The plan view shape of the compressed groove is not particularly limited as long as the effect of the present invention is not hindered, and in addition to a shape (see FIG. 1) that combines curves as in the above-described embodiment, a linear shape, a broken line shape, and a zigzag shape. Any shape such as a geometric shape or a predetermined design shape (flower pattern or the like) can be employed. Moreover, squeezing the groove, as in the embodiment described above, in plan view, may be arranged one on each side of the widthwise central axis C _L extending in the longitudinal direction L, but the widthwise center axis C _L Two or more of each may be arranged on both sides of the. When a plurality of compressed groove portions are arranged in this manner, the rigidity of the absorption main body portion is increased, and the shape of the absorption main body portion is more easily maintained.

[Adhesive part]
In the sanitary napkin 1 according to the present embodiment, the plurality of adhesive portions 9 that are arranged on the non-skin facing surface of the back sheet 23 and extend continuously or intermittently in the width direction W are long as shown in FIG. A plurality of lines are arranged at predetermined intervals in the direction L (in other words, the adhesive portions 9 extending in the width direction W and the non-adhesive portions 10 extending in the width direction W are alternately arranged along the longitudinal direction L). The adhesive portion arrangement area 11 for fixing clothes (underwear) is formed together with the non-adhesive portion 10 which is arranged in a stripe shape and exists between the adhesive portions 9 adjacent to each other in the longitudinal direction L. This adhesion part arrangement | positioning area | region 11 fixes the non-skin opposing surface of the absorption main-body part 2 to the skin opposing surface of a wearer's clothing (underwear), when a wearer wears the sanitary napkin 1. FIG. In addition, the arrangement | positioning form of the above-mentioned adhesion part is not restrict | limited especially unless the effect of this invention is inhibited, Adhesion part is arrange | positioned with arbitrary forms, such as spiral shape, intermittent shape, and dot shape other than the above-mentioned stripe shape. can do.

  In this invention, the arrangement position of the above-mentioned adhesion part arrangement | positioning area | region is not restrict | limited in particular, This adhesion part arrangement | positioning area | region is arrange | positioned so that it may overlap with the pressing part in the back non-stretching area in the above-mentioned back area in the thickness direction. It may be arranged so that it may not overlap with the pressing part in the thickness direction (that is, the pressing part exists behind the rear edge of the adhesive part arrangement region in the longitudinal direction of the absorbent article). It may be. When the adhesive part arrangement region is arranged like the latter, the wearer's finger can easily enter between the absorbent article and the undergarment to which the absorbent article is fixed (that is, the wearer has the above-described compressed part). And at least the squeezed portion and the vicinity thereof in the above-described rear non-stretchable region are easy to move (that is, the portion gripped by the wearer and the vicinity thereof are easy to move). During the position adjustment, the wearer can more reliably grasp the rear region of the absorbent article, and the absorbent article can be adjusted to a more accurate position, resulting in an even better wearing feeling. Can be obtained.

  Moreover, in this invention, it is preferable that the above-mentioned adhesion part arrangement | positioning area | region has an adhesive force smaller than the force required in order to extend an absorbent article 30% in a longitudinal direction. When the adhesive force in the adhesive portion arrangement region is smaller than the force required to extend the absorbent article by 30% in the longitudinal direction, the wearer pulls the absorbent article being worn strongly in the longitudinal direction (that is, absorbs). When the position is adjusted (while the absorbent article is stretched by 30% or more), the absorbent article is peeled off from the underwear, and the position of the absorbent article is easily adjusted. As a result, a better wearing feeling can be obtained. it can.

  Here, the force required to stretch the absorbent article by 30% in the longitudinal direction can be measured according to the method described in “6.3 Tensile Strength and Elongation” of JIS L 1913: 2010, and The adhesive strength of the adhesive part arrangement region arranged on the non-skin facing surface of the back sheet can be measured according to the following measurement method. In addition, FIG. 7 is a schematic diagram for explaining a method for measuring the adhesive strength of the adhesive portion arrangement region arranged on the non-skin facing surface of the back sheet.

<Adhesive strength measurement method>
(1) The top sheet and the absorbent body are peeled off from the absorbent article, and the back sheet having an adhesive is taken out. At this time, the adhesive, tissue, etc. adhering to the skin-facing surface of the back sheet (that is, the surface on the absorber side) are removed using a cotton swab or the like soaked with ethanol.
(2) The rectangular shape of the back sheet taken out from the absorbent article is larger than the area where the adhesive is disposed (that is, the area where the adhesive portion is disposed) and can be secured by the chuck of the constant speed extension tester. To obtain a back surface sheet sample 23 'as shown in FIG.
(3) The test adherence fabric (Kanakin No. 3) is cut into a size of 70 mm in width and 80 mm in length to obtain a test adherence sheet 12 as shown in FIG. In addition, the size of the test adherend sheet 12 can be appropriately changed according to the size of the above-described back surface sheet sample 23 ′.
(4) After placing the back sheet sample 23 ′ on the upper surface of the test adherend sheet 12 so that the surface having the adhesive (adhesive part 9) is on the lower side, a 2 kg roller is applied once in one direction. The laminate sample 13 is obtained by pasting the two together. In addition, when arrange | positioning back sheet sample 23 'on the upper surface of the test application | coating sheet 12, as shown in FIG. 7, the area | region (adhesion part arrangement | positioning area | region 11) where the adhesive of the back sheet sample 23' is arrange | positioned is shown. Are covered with the test adherent sheet 12, and one end in the longitudinal direction of each of the test adherend sheet 12 and the back sheet sample 23 ′ extends in the longitudinal direction by 15 mm or more from the overlapping portion of both. The test adherend sheet 12 and the back sheet sample 23 ′ are arranged so as to be shifted in the longitudinal direction so as to be removed. Moreover, the speed at the time of bonding shall be 300 mm / min.
(5) The obtained laminate sample 13 of the test adherend sheet 12 and the back sheet sample 23 ′ is left for 30 minutes in a constant temperature and humidity atmosphere of 20 ° C. and 60% RH.
(6) Both ends of the laminate sample 13 in the longitudinal direction (that is, the test adherend sheet extending from the overlapping portion of the test adherend sheet 12 and the back surface sheet sample 23 'in two opposite directions in the longitudinal direction) 12 and one end in the longitudinal direction of each of the back surface sheet samples 23 ′) are gripped by a chuck of a constant-speed stretch tensile tester, and then the laminate sample 13 is laminated as shown in FIG. The sample 13 is pulled in two opposite directions A and A ′ in the longitudinal direction to peel off the above-mentioned test adherend sheet 12 and the back sheet sample 23 ′, and the peel strength (maximum value cN) at that time is measured. . The tensile test conditions of the constant speed extension tensile tester are such that the distance between chucks is 60 mm and the tensile speed is 500 mm / min.
(7) The above-mentioned peel strength is measured five times, and the average value is defined as the adhesive strength (cN) of the adhesive portion arrangement region arranged on the non-skin facing surface of the back sheet.

  Further, in the present invention, the size or area of the above-mentioned adhesive portion arrangement region is not particularly limited as long as the effect of the present invention is not impaired, and any size or area can be adopted. It has a width direction length smaller than the pressing part in the back non-stretchable area in the above-mentioned rear area (that is, the width direction length of the above-mentioned pressing part is larger than the width direction length of the adhesion part arrangement area) Is preferred. When the width direction length of the adhesive part arrangement area is smaller than the width direction length of the above-described compressed part (that is, the width direction length is larger than the width direction length of the adhesive part arrangement area), the wearer absorbs. When the absorbent article is pulled in the longitudinal direction while gripping the rear area of the article, the force applied locally in the above-mentioned rear non-stretchable area (that is, the absorption of the part holding the absorbent article and its vicinity) The force applied to the body can be more reliably propagated forward while being dispersed in the width direction of the absorbent body by the above-described compressed portion having a large length in the width direction, so that the position of the absorbent article can be adjusted. Even if the position of the absorbent article is adjusted while strongly pulling the absorbent article in the longitudinal direction, the absorbent body in the absorbent article is more difficult to break, and as a result, the absorbent performance of the absorbent article further decreases. It becomes difficult.

In addition, the absorbent article of the present invention is not limited to the above-described embodiment and exemplary description, and can be appropriately combined and changed without departing from the object and spirit of the present invention.
In addition to the sanitary napkin of the above-described embodiment, the present invention can be applied to various absorbent articles such as a panty liner and a (light) incontinence pad. In this specification, ordinal numbers such as “first” and “second” are used to distinguish items with the ordinal numbers, and mean the order, priority, importance, etc. of each item. Not what you want.

1 Sanitary napkin (absorbent article)
2 Absorption Main Body 21 Top Sheet 22 Absorber 23 Back Sheet 24 Elastic Sheet 3, 3 ′ Flap Part 4, 4 ′ Adhesive Part 5 Front Edge 6 Rear Edge 9 Adhesive 10 Non-adhesive 11 Arrangement of Adhesive Area A ₁ Front area A ₂ Excretion area A ₃ Rear area C _P pressing part E _A Stretching area N ₁ Front non-stretching area N ₂ Non-stretching area N ₃ Back non-stretching area S Slit part

Claims (8)

Longitudinal direction, width, including a top sheet positioned on the skin facing surface side of the absorbent article, a back sheet positioned on the non-skin facing surface side of the absorbent article, and an absorber positioned between these sheets An absorbent article having a direction and a thickness direction,
The absorbent article is, in plan view, in the longitudinal direction,
Having an excretion opening corresponding area corresponding to the excretion opening of the wearer when wearing the absorbent article, and a rear area located behind the excretion opening;
The absorber includes a non-stretchable region extending across the widthwise central axis extending in the longitudinal direction in the excretory opening corresponding region, and in the rear region, the stretchable region is stretchable at least in the longitudinal direction. And a rear non-stretchable region adjacent to the rear of the stretchable region and extending across the entire width direction of the absorber,
The rear non-stretchable region includes a pressing portion that integrates the topsheet and the absorber.
The absorbent article.   The absorbent article according to claim 1, wherein the rear non-stretchable region is a region including an edge at the rear of the absorbent body.   The absorptive article according to claim 1 or 2 in which said pressing part exists over said elastic region and said back non-elastic region.   The said pressing part is an absorptive article as described in any one of Claims 1-3 which has the planar view shape which the width direction length becomes large as it goes ahead. The absorbent article has an adhesive portion arrangement region extending in the longitudinal direction and the width direction on the non-skin facing surface of the back sheet,
The said pressing part is an absorptive article as described in any one of Claims 1-4 which exists behind the back edge of the said adhesion part arrangement | positioning area | region in the said longitudinal direction. The absorbent article has an adhesive portion arrangement region extending in the longitudinal direction and the width direction on the non-skin facing surface of the back sheet,
The absorbent article according to any one of claims 1 to 5, wherein an adhesive force in the adhesive portion arrangement region is smaller than a force necessary to extend the absorbent article by 30% in the longitudinal direction.   The absorptive article according to claim 5 or 6 whose width direction length of said pressing part is larger than the width direction length of said adhesion part arrangement field.   The absorbent article according to any one of claims 1 to 7, wherein the absorbent body has a maximum length in a width direction in the rear non-stretchable region.

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