KR20180097750A - Absorbent article - Google Patents

Abstract

An object of the present invention is to provide an absorbent article having excellent absorbing performance and good wearing comfort even when the wearer operates the absorbent article.
The absorbent article of the present invention is an absorbent article comprising a topsheet (2) made of a nonwoven fabric. The absorbent article includes a longitudinal center region (A _LC ), a longitudinal first region (A _L1 ) second region (a _L2) having the surface sheet 2, the magnetic brush occurs amount of fibers constituting said nonwoven fabric in said longitudinal central region (a _LC), said longitudinal first region (a _L1 ) And the longitudinal second region (A _L2 ), and the topsheet (2) is continuously extended in the width direction of the absorbent article Convex structure 20 in which convex portions 21 and concave portions 22 continuously extending in parallel with the convex portions 21 are alternately arranged.

Description

Absorbent article

The present invention relates to an absorbent article such as a panty liner, a light incontinence pad, and a sanitary pad.

BACKGROUND ART Conventionally, in absorbent articles such as panty liners, light incontinence pads, and physiological pads, there is a demand for the ability to rapidly absorb liquid excrement such as urine and menstrual blood and hold it so as not to leak to the outside. In addition to their ability, they are required to have excellent feel and fit.

Patent Document 1 discloses an absorbent article having excellent absorbing performance and excellent tactile sensation. For example, Patent Document 1 discloses an absorbent article having a plurality of And embossing the absorbent article. According to the absorbent article disclosed in Patent Document 1, moisture absorbed in the topsheet can be quickly permeated into the interior without impairing flexibility.

However, since the cotton nonwoven fabric constituting the topsheet has a property of absorbing and holding the liquid excretion such as urine discharged from the wearer, the absorbent article disclosed in Patent Document 1 has a problem that the liquid excretion such as urine When the liquid excretion is excreted, the liquid excrement is absorbed and held by the topsheet, and the topsheet becomes wet, so that the wearer feels an unpleasant sensation such as a feeling of stickiness, and consequently, the feeling of wearing of the absorbent article may deteriorate.

On the other hand, Patent Document 2 discloses that, in a fabric (knitted fabric), synthetic fibers having a modified cross-section are contained as the absorbent fibers, and the fibers are brushed with a predetermined bristle length, A technique for solving the problem is disclosed.

If such a technique is applied to the topsheet of the absorbent article, when the wearer wearing the absorbent article performs an operation such as standing, sitting, walking, etc., the wearer's skin surface (concretely, The skin surface on the skin facing side of the topsheet and the skin surface of the periphery of the crotch portion where the stimulus is likely to be felt) and the skin surface of the skin sheet face each other, The wearability of the absorbent article may be lowered.

As described above, in the conventional absorbent article, it is difficult to achieve both excellent absorbing performance and wearing comfort in the wearer's operation.

Japanese Patent No. 5074913 Japanese Patent Registration No. 5073202

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide an absorbent article which has excellent absorbing performance and is comfortable even when the wearer operates the absorbent article.

One aspect (mode 1) of the present invention is an absorbent article comprising a topsheet made of a nonwoven fabric and having a longitudinal direction, a width direction and a thickness direction orthogonal to each other,

Wherein the absorbent article has one side edge portion and the other side edge portion in the longitudinal direction,

Further, the absorbent article may be provided in a plan view (in plan view)

A first imaginary straight line extending in the width direction and located between the one side edge portion and the longitudinally extending central axis extending in the width direction and a second imaginary straight line extending between the other side edge portion and the longitudinal center axis And a second imaginary straight line extending in the width direction and extending in the width direction;

A longitudinal first region positioned between the one side edge portion and the first widthwise imaginary straight line;

And a second longitudinal direction region located between the other side edge portion and the second widthwise imaginary straight line,

Wherein the surface sheet is formed in such a manner that the amount of fluff of the fibers constituting the nonwoven fabric in the longitudinally central region is larger than that of the fibers in the longitudinal direction end region comprising the longitudinal first region and the longitudinal second region Lots more than lint,

The surface sheet may further include a convex portion protruding toward the skin-facing surface side of the absorbent article in the thickness direction and extending continuously in the width direction, and a non- And a concave-convex structure in which recesses facing the skin-facing surface side are recessed and in which concave portions continuously extending in parallel with the convex portion are alternately arranged.

The absorbent article of this embodiment 1 is characterized in that the amount of fluffing of the fibers in the longitudinal center region of the topsheet made of nonwoven fabric is greater than the amount of fluffing of the fibers in the longitudinal end region (in other words, Direction end region is less than the amount of fluffing of the fibers in the longitudinal center region), it is preferable that in the longitudinal center region which is less susceptible to the influence of the wearer's operation, In the end portion of the wearer's skin which is liable to be rubbed with the wearer's skin during the operation of the wearer (particularly, in the case of standing, sitting, or the like) Unpleasant irritation, such as tingling sensation caused by linting, is hardly detected by the wearer , It is possible to provide a wearer with a good fit.

The absorbent article of the present embodiment is characterized in that the topsheet has a specific convexo-concave structure in which convex portions continuously extending in the width direction of the absorbent article and concave portions continuously extending in parallel with the convex portions are alternately arranged (In the case where the convex portion and the concave portion each extend in the width direction) corresponding to the portion having a large curvature of the wearer (the abdomen side portion or the buttock portion of the crotch portion) The surface sheet is liable to bend in the longitudinal direction), and can be easily deformed in the longitudinal direction along the wearer's body shape. By the deformation in the longitudinal direction, the absorbent article is fixed to the wearer and becomes difficult to be shifted. Even in the operation of the wearer, the above-mentioned longitudinal center region is formed in a predetermined region of the absorbent article, (That is, an action and effect that a good wearing feeling can be provided to the wearer while exhibiting an excellent absorbing performance in the longitudinal center region) can be achieved even in the operation of the wearer It can be demonstrated clearly.

Another aspect (mode 2) of the present invention is an absorbent article comprising a topsheet made of a nonwoven fabric and having a longitudinal direction, a width direction and a thickness direction orthogonal to each other,

Wherein the absorbent article has one side edge portion and the other side edge portion in the width direction,

Further, the absorbent article may be provided at a flat surface,

A first virtual straight line extending in the longitudinal direction and positioned between the one side edge portion and the widthwise central axis extending in the longitudinal direction, and a second imaginary straight line extending in the longitudinal direction between the other side edge portion and the width A widthwise central region located between the longitudinal centerline axial line and a longitudinal second virtual straight line extending in the longitudinal direction;

A first width-wise area located between the one side edge and the first longitudinal straight line;

And a second width-direction area located between the other end edge and the second longitudinal virtual line,

The surface sheet is characterized in that the amount of fluffing of the fibers constituting the nonwoven fabric in the widthwise central region is larger than the amount of fluffs of the fibers in the widthwise end region comprising the widthwise first region and the widthwise second region Lots more than lint,

The topsheet may further include a convex portion protruding toward the skin-facing surface side of the absorbent article in the thickness direction and extending continuously in the width direction, and a convex portion extending continuously in the width direction, And concave portions extending continuously in parallel with the convex portions are alternately arranged.

The absorbent article of the second aspect of the present invention is characterized in that the amount of fuzz formation of the fibers in the widthwise central region of the topsheet made of nonwoven fabric is larger than the amount of fuzz formation of the fibers in the widthwise end region (in other words, The amount of fluffing of the fibers in the end regions is smaller than the amount of fluffs of the fibers in the widthwise central region). Therefore, in the central region in the width direction, which is hardly affected by the operation of the wearer, (In particular, the movement in the width direction or the warping direction (the direction in which the wearer wiggles in the longitudinal direction) is large) while exhibiting excellent absorbing performance by the wearer's wear In the direction end area, unpleasant irritation such as a tingling feeling due to the fluff formation of the fibers It is difficult for the wearer to perceive it, and a good fit can be provided to the wearer.

The absorbent article of the present embodiment is characterized in that the topsheet has a specific convexo-concave structure in which convex portions continuously extending in the width direction of the absorbent article and concave portions continuously extending in parallel with the convex portions are alternately arranged (In the case where the convex portion and the concave portion extend in the width direction respectively) corresponding to the portion having a large curvature of the wearer (such as the abdomen side portion or the buttock portion of the crotch portion) It is easy to bend in the direction of the wearer's body), and can be easily deformed in the longitudinal direction along the wearer's body shape. By the deformation in the longitudinal direction, the absorbent article is fixed to the wearer and becomes difficult to be shifted, and even in the operation of the wearer, the above-mentioned widthwise central region can be formed in a predetermined region of the absorbent article, (That is, an action and effect that a good wearing feeling can be provided to the wearer while exhibiting an excellent absorbing performance in the widthwise central region), even in the operation of the wearer It can be demonstrated clearly.

In another aspect (mode 3) of the present invention, in the absorbent article of aspect 1 or 2, the fibers constituting the nonwoven fabric are hydrophilic fibers.

In the absorbent article of this embodiment 3, the fibers constituting the nonwoven fabric used for the topsheet are hydrophilic fibers, so that liquid excretion such as urine discharged from the wearer can be quickly absorbed and held on the topsheet. Further, in the absorbent article of this embodiment, since the contact area between the surface sheet and the skin surface of the wearer is relatively small due to the above-mentioned concavo-convex structure, the stickiness caused by the liquid excrement held on the surface sheet is detected by the wearer It gets harder.

Therefore, the absorbent article of this embodiment can exhibit more excellent absorbing performance while maintaining the above-mentioned good wearing feeling.

Further, in another aspect (mode 4) of the present invention, in the absorbent article of aspect 3, the convex part has a cavity part in which the surface of the surface sheet on the side of the non- have.

Since the convex portion of the concavo-convex structure in the topsheet of the absorbent article of this aspect 4 has the cavity portion, good cushioning property can be exhibited by the cavity portion before absorbing the liquid excrement excreted from the wearer, After the absorption, the voids between the hydrophilic fibers of the nonwoven fabric used for the topsheet are reduced by the liquid excretion, so that the cavities are also reduced or eliminated, and voids are easily formed between the skin surface of the wearer and the surface sheet. The liquid excrement held on the sheet becomes difficult to contact the skin surface of the wearer, and the stickiness caused by the liquid excrement becomes difficult to be detected by the wearer.

Further, after the absorption of the liquid excrement, the distance between the topsheet and the layer disposed on the non-skin-facing side of the topsheet (for example, an intermediate sheet or an absorbent body or the like) It is easy to shift from the topsheet to the layer disposed on the side of the non-skin-facing side of the topsheet. As a result, sticking due to the liquids left in the topsheet is less likely to occur.

Therefore, the absorbent article of this embodiment can provide a more comfortable feeling to the wearer before and after the absorption of the liquid excrement, while maintaining the above excellent absorption performance.

According to the present invention, it is possible to provide an absorbent article having excellent absorbing performance and good wearing feeling even when the wearer operates.

1 is a partially broken perspective view of a panty liner 1 according to a first embodiment of the present invention.
2 is a plan view of the panty liner 1 according to the first embodiment of the present invention.
3 is a partial cross-sectional view of the panty liner 1 according to the first embodiment of the present invention taken along the line III-III in Fig.
4 is a plan view of the panty liner 10 according to the second embodiment of the present invention.

Best Mode for Carrying Out the Invention 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, the term " an object placed on a horizontal plane (for example, an absorbent article, an absorbent article, or the like) Side in the thickness direction of the object " is simply referred to as " plan time ".

The various directions used in the present specification are as follows unless otherwise noted.

In the present specification, the " width direction " refers to " the length of a longitudinally long object in plan view is a shorter direction (shorter direction) "Quot; refers to a direction in which the object is long, " the thickness direction " refers to " the direction perpendicular to the object placed on the horizontal plane in the unfolded state ", and the width direction, .

In this specification, unless otherwise stated, in the thickness direction of the absorbent article, " the side closer to the skin surface of the wearer when wearing the absorbent article " is referred to as "Quot; far away from the wearer ' s skin surface " is referred to as " non-skin-facing surface side ".

Fig. 1 is a partially broken perspective view of a panty liner 1 according to a first embodiment of the present invention, and Fig. 2 is a plan view of a panty liner 1. Fig. 3 is a partial cross-sectional view of the panty liner 1 according to the first embodiment of the present invention taken along line III-III in Fig.

As shown in Figs. 1 and 2, the panty liner 1 according to the first embodiment of the present invention has a shape in which the outer shape is elongated in the longitudinal direction (L) at the time of planarization, L have an approximately oval longitudinally elongated shape with the outer edge of the substantially central portion being slightly constricted in the width direction W. [ In the present invention, the outer shape of the absorbent article is not particularly limited and may be arbitrarily selected depending on various applications and the like, provided that the longitudinal dimension L is longer than the width dimension of the width direction W (For example, rectangular, elliptical, gourd type, etc.) may be employed.

As shown in Figs. 1 and 3, the panty liner 1 is a panty liner 1 which is made of a nonwoven fabric having a specific concavo-convex structure 20, which is located on the skin-facing side of the wearer in the thickness direction T, (2), a backsheet (3) composed of a liquid-impermeable sheet positioned on the non-skin-facing side of the wearer, and an intermediate sheet (4) positioned between the backsheet The surface 2a of the skin facing surface side is formed by forming the surface of the panty liner 1 facing the skin (that is, the supply surface of liquid excrement such as urine discharged from the wearer) The surface of the panty liner 1 facing the skin forms the surface of the non-skin facing surface side.

3, between the topsheet 2 and the intermediate sheet 4 and between the intermediate sheet 4 and the backsheet 3 in the present embodiment, (A ₁ ) and the second adhesive layer (A ₂ ) by the adhesive layer (A).

3, a pressure-sensitive adhesive layer 6 continuously extending in the widthwise direction W is formed on the surface of the backsheet 3 on the side of the non-skin-facing surface side, (On the side of the non-skin facing surface side of the tacky portion for fixing the garment) is provided with a release sheet (not shown) for protecting the tacky portion for garment fixing before use, (5) are disposed. The pressure-sensitive adhesive for forming the pressure-sensitive adhesive layer is not particularly limited as long as it can fix the absorbent article to the wearer's garment (for example, underwear or the like), and for example, an arbitrary pressure-sensitive adhesive containing a styrene- Can be used. The arrangement pattern of the pressure-sensitive adhesive layer in the pressure-sensitive adhesive portion for pressure-sensitive adhesive is not particularly limited, and the pressure-sensitive adhesive layer may intermittently extend in the width direction (W) or may extend in the longitudinal direction do.

When the panty liner 1 is worn by releasing the release sheet 5 as described above, the panty liner 1 is attached to the back side of the backsheet 3, To the inside surface of the wearer's garment 7 (e.g., undergarment) by the user, and the topsheet 2 faces the wearer's skin surface.

As shown in Fig. 2, the panty liner 1 according to the present embodiment has one side edge portion E _L1 and the other side edge edge portion E _{L2 in} the longitudinal direction L It has, also in plan view, is located between the one side end edge portion (E _L1) and the longitudinal center axis (C _W) extending in the width direction (W) also extending in the width direction (W) And a widthwise direction extending in the width direction (W) between the first virtual straight line (L _W1 ) in the width direction and the second side edge (E _L2 ) and the longitudinal direction center axis (C _W ) 2 a longitudinal center region A _LC located between the imaginary straight line L _W2 ; A longitudinal first region ( _A1L ) positioned between the one side edge portion (E _L1 ) and the widthwise first virtual straight line (L _W1 ); And a longitudinal second region (A _L2 ) located between the other side edge portion (E _L2 ) and the second widthwise imaginary straight line (L _W2 ). The topsheet (2) is, the longitudinal direction of the central region (a _LC), the magnetic brush occurs amount of fibers constituting the nonwoven fabric, the lengthwise direction a first area (a _L1) and said longitudinal second as shown in Fig. 3 Is larger than the amount of fluffing of the fibers in the longitudinal direction end region made of the region (A _L2 ).

Further, in the present invention, the position of the first imaginary straight line in the width direction between the one side edge portion in the longitudinal direction and the longitudinal center axis line, the position of the other side edge portion in the longitudinal direction, , The position of the second virtual straight line in the width direction is set such that the longitudinal center region described above includes the region corresponding to the excretion of the wearer in the longitudinal direction (i.e., the longitudinal direction length of the longitudinal center region Is longer than the length in the longitudinal direction of the region corresponding to the excretion of the wearer). For example, in the above-described embodiment, the first virtual straight line L _W1 in the width direction and the second virtual straight line L _{W2 in the} width direction are obtained by dividing the panty liner 1 in the longitudinal direction L by approximately three Respectively.

The panty liner 1 according to the present embodiment is characterized in that the amount of fluffing of the fibers in the longitudinal center region A _LC of the topsheet 2 made of nonwoven fabric is smaller than the amount (In other words, the amount of fuzz formation of the fibers in the longitudinal direction end portion is larger than the amount of fuzz formation of the fibers in the first region A _L1 and the longitudinal second region A _L2 ) directions because the central region (a _LC), fluff occurs amount than less) of fibers in the, in influenced by the wearer of the operation difficult said longitudinal central region (a _LC), superior absorption performance by the magnetic brush occurs in the above-described (Specifically, the fluff-rising portion has a high permeability of the liquid and a high absorption rate because the fibers in the nonwoven fabric are in a loosened state to some extent) (Particularly, in the case where the movement in the longitudinal direction L such as standing, sitting, or the like is large), it is unpleasant, such as a tingling feeling due to the fluff of the fibers, The stimulus is hardly detected by the wearer, and a good fit can be provided to the wearer.

In addition, the amount of linting of the fibers will be described in detail at the time of explanation of the surface sheet to be described later.

1 and 3, the panty liner 1 according to the present embodiment is characterized in that the topsheet 2 made of the above-described nonwoven fabric is provided in the panty liner 1 in the thickness direction T A convex portion 21 protruding in a direction Da toward the skin facing surface side of the panty liner 1 and continuously extending in the width direction W of the panty liner 1; The concave portion 22 which is recessed in the direction Db toward the non-skin-facing surface side of the panty liner 1 and continuously extends in parallel with the convex portion 21 is alternately arranged along the longitudinal direction L As shown in Fig.

In the present embodiment, the convex portion 21 of the convexo-concave structure 20 is provided with a hollow portion 23 to which the surface 2b of the non-skin facing surface side of the topsheet 2 faces, However, the present invention is not limited to such a configuration, and the concavo-convex structure of the topsheet may not have the cavity as described above.

The panty liner 1 according to the present embodiment is characterized in that the topsheet 2 is provided with a convex portion 21 continuously extending in the width direction W of the panty liner 1 and a convex portion 21 extending in parallel with the convex portion 21 (20) corresponding to a portion having a large curvature of the wearer (a side portion of the crotch portion, a buttock portion or the like) of the wearer, the concave portion (22) L so that it can be easily deformed in the longitudinal direction L along the wearer's body shape. By deformation in the longitudinal direction (L), a panty liner 1 is becomes difficult groups displaced is fixed with respect to the wearer, even when the wearer's motion, the panty liner to the longitudinal central area (A _LC) of the above-described (1 (I.e., a region corresponding to the excretion of the wearer) can be steadily positioned, so that the above-mentioned action and effect (that is, excellent absorption performance in the longitudinal center region A _LC ) And an effect of providing a wearer with a comfortable feeling) can be exhibited even when the wearer operates.

Hereinafter, various members constituting the absorbent article of the present invention will be described in more detail.

[Surface sheet]

1 and 3, in the panty liner 1 according to the present embodiment, the topsheet 2 has a thickness direction of the panty liner 1, which can be in direct contact with the skin surface of the wearer The surface 2a forming the surface of the panty liner 1 opposite to the skin and the surface 2a opposite to the surface 2a of the panty liner 1, And has a surface 2b on the side of the opposing face and also has a specific concavo-convex structure 20 described above.

In the present embodiment, the topsheet 2 has a shape that is long and long in a plan view and is long in the direction along the longitudinal direction L of the panty liner 1. However, However, the shape of the topsheet is not limited to such a shape, and the topsheet may have any shape and size in plan view.

In the present embodiment, the nonwoven fabric constituting the topsheet 2 is formed of hydrophilic fibers. If the nonwoven fabric constituting the topsheet is formed of hydrophilic fibers, liquid excretion such as urine discharged from the wearer can be quickly absorbed and held by the topsheet. That is, the surface sheet can function as an absorbent layer in the absorbent article. Here, in the absorbent article of the present invention, since the contact area between the topsheet and the skin surface of the wearer is relatively small due to the above-mentioned concavo-convex structure, even if the liquid excrement is held on the topsheet as described above, It is difficult for the wearer to detect the stickiness caused by the liquid excrement held on the surface sheet.

Therefore, by using the nonwoven fabric formed of the hydrophilic fibers as the topsheet, the absorbent article can exhibit a better absorbing performance while maintaining a good wearing feeling.

Further, if the surface sheet can function as the absorbent layer of the absorbent article as described above, it is not necessary to separately provide an absorbent layer such as an absorbent layer in the absorbent article (or even if an absorbent layer is provided separately, A thin absorbent layer is sufficient. Therefore, the absorbent article can be made thin as a whole, and more excellent flexibility and comfortable feeling can be obtained.

In the present invention, the nonwoven fabric constituting the topsheet is not particularly limited as long as it can function as a topsheet of the absorbent article. In addition to the nonwoven fabric formed by the above-described hydrophilic fibers, It is possible to use any nonwoven fabric such as a nonwoven fabric made of thermoplastic resin fibers subjected to hydrophilization treatment or a nonwoven fabric made of mixed fibers of hydrophilic fibers and hydrophobic fibers.

In the present invention, the type of the nonwoven fabric constituting the topsheet is not particularly limited, and examples thereof include a spun lace nonwoven fabric, an air-through nonwoven fabric, a spunbond nonwoven fabric, a point bond nonwoven fabric, a meltblown nonwoven fabric, For example, SMS nonwoven fabric, etc.) can be used. Above all, it is preferable to use a spun lace nonwoven fabric because of its excellent flexibility.

The fibers constituting the nonwoven fabric are not particularly limited, and examples thereof include cellulose fibers such as cotton and pulverized pulp; Regenerated cellulose fibers such as rayon, fibril Rayon and the like; Semi-synthetic cellulose fibers such as acetate and triacetate; A hydrophilic fiber such as a thermoplastic resin fiber or a conjugated fiber subjected to a hydrophilic treatment may be suitably used. Of these, cellulose fibers such as cotton and cellulose fibers such as regenerated cellulose fibers and semisynthetic cellulose fibers are preferably used because they are excellent in absorbency, liquid holding ability, softness, feel and ease of formation of fluff , And furthermore, it is more preferable to use mixed fibers comprising cotton, rayon or a combination thereof. Particularly, if the nonwoven fabric constituting the topsheet is formed of cotton, the liquid excretion such as urine discharged from the wearer can be absorbed and held by the topsheet more quickly. That is, the surface sheet can function more accurately as the absorbent layer in the absorbent article.

When the absorbent article is provided with an absorbent layer capable of absorbing and holding liquid excretion such as urine, or when it is assumed that the amount of the liquid excreta to be treated is small, the nonwoven fabric constituting the top sheet , Polyolefin-based fibers such as polyethylene (PE) and polypropylene (PP), as well as the above-mentioned hydrophilic fibers; Polyester fibers such as polyethylene terephthalate (PET); It is preferable that the hydrophilic fiber contains a hydrophilic fiber in a mass ratio of 50 mass% or more, and a mass ratio of 60 mass% or more More preferably,

As described above, in the present invention, in addition to the hydrophilic fibers, the nonwoven fabric constituting the topsheet may include the heat-sealable fibers for improving the sheet strength. In particular, the intermediate sheet, which will be described later, , The nonwoven fabric constituting the top sheet does not contain the thermally fusible fiber, or even if it contains the thermally fusible fiber, the content of the thermally fusible fiber in the intermediate sheet (mass ratio) ). If the nonwoven fabric constituting the top sheet does not contain the thermally fusible fiber or contains the thermosusable fiber in a content lower than the content of the thermally fusible fiber in the intermediate sheet, Since the bonding portion (fused portion) is not present in the nonwoven fabric constituting the surface sheet, or even if it exists, the bonding portion (fused portion) exists in a smaller number than the number of bonding portions (fused portions) in the intermediate sheet. So that the surface sheet is easy to secure adequate flexibility and good touch. As a result, it is easy to ensure a good fit as an absorbent article.

The basis weight of the surface sheet is not particularly limited, so long as it does not impair the effect of the present invention, and any basis weight can be employed in consideration of liquid-absorbing property, flexibility, touch, and the like. The basis weight is, for example, a basis weight in the range of 10 g / m 2 to 100 g / m 2, preferably in the range of 20 g / m 2 to 50 g / m 2. The basis weight can be measured according to 5.2 of JIS L 1906.

The thickness of the topsheet is not particularly limited as long as it does not impair the effect of the present invention. For example, the thickness of the topsheet may be within the range of 0.001 mm to 5.0 mm. , Preferably within a range of 0.01 mm to 3.0 mm, and more preferably within a range of 0.1 mm to 1.0 mm.

Here, the thicknesses of the topsheet and intermediate sheets to be described later can be measured according to the following < various sheet thickness measuring method >. The thickness of various sheets other than the topsheet and the intermediate sheet (e.g., backsheet) can be measured in the same manner.

≪ Method of measuring thickness of various sheets >

(1) A sample sheet of a predetermined size (for example, 100 mm x 100 mm) is cut out from the sheet to be measured.

(2) The cut sample sheet was set in an automatic compression tester " KES FB-3A " of Kato Tech Co., Ltd., and the thickness (mm) when the pressure on the sample sheet was 49 Pa was measured by the measuring terminal of the tester , And the measured thickness (mm) is taken as the thickness of the sample sheet.

3, the surface sheet 2 in the present embodiment is formed so that the amount of fluffs formed on the fibers constituting the nonwoven fabric in the longitudinal center region A _LC is larger than the amount Is greater than the amount of fluffing of the fibers in the longitudinal direction end region comprising the region (A _L1 ) and the longitudinal second region (A _L2 ). 3, symbol A _LW2 is a virtual plane parallel to the vertical direction (thickness direction T) including the second widthwise imaginary straight line L _W2 , and the length direction first area A _L1 ) and the longitudinal second region (A _L2 ).

Here, in the present specification, the " amount of napping of fibers " means the number of napkins (fn) having a nap per unit area in the target area. Further, in order to compare a somewhat greater amount of "fluff formation amount" in each area, by performing a friction fastness (fastness) test which is used as an evaluation method of fluff formation in the related art, It is possible to compare the amount of fuzz occurrence of the fibers in the fiber. Such friction fastness test can be carried out as follows.

<Friction fastness test>

(1) A measurement sample is obtained by cutting the measurement target region from a nonwoven fabric constituting the top sheet into a predetermined size (for example, 300 mm x 150 mm).

(2) The measurement sample is fixed on the measurement stage of a dyeing rub fastness tester (manufactured by Dai-ichi Kogaku Seiki Seisakusho Co., Ltd.).

(3) Dyeing portion A 200 g weight is attached to the upper surface of the friction terminal of the rubbing fastness tester and a cloth tape for forming a friction surface is attached to the lower surface.

(4) The surface of the measurement sample fixed on the measuring stage is rubbed with the frictional surface of the frictional terminal described above. At this time, the number of times of reciprocation of the friction terminal is three times, and the range of movement (reciprocating width) of the friction terminal is 120 mm.

(5) Observe the fuzziness of the surface of the measurement sample after rubbing with a friction terminal.

In the nonwoven fabric, as described above, if the constituent fibers of the nonwoven fabric are fluffed, the portion of the fibers where the fluffs are present is in a state in which the fibers in the nonwoven fabric are loosened to some degree.

Therefore, as in the present embodiment, the amount of fluffs formed in the longitudinal center region A _LC of the topsheet 2 made of nonwoven fabric is smaller than the amount of fluffs formed in the longitudinal end region (In other words, the amount of fuzz formation of the fibers in the longitudinal end region is smaller than the amount of fuzz formation of the fibers in the longitudinal center region A _LC ), the influence of the wearer's operation In the difficult longitudinal center region A _LC , excellent absorbing performance due to the occurrence of the fluffs described above can be exerted. On the other hand, in the longitudinal end region where the skin surface of the wearer easily rubs during operation of the wearer, It is difficult for the wearer to perceive unpleasant stimuli such as a tingling sensation caused by the occurrence of wear, thereby providing a wearer with a good fit There.

In the present invention, means for forming fuzziness on the nonwoven fabric constituting the topsheet is not particularly limited, and examples thereof include a bristle means using a cloth (needle cloth), an emery or the like, And means for using gear processing performed under the condition that the gear is machined. Among them, a means of using gear processing is preferable in that fluff formation of fibers and the above-mentioned specific concavo-convex structure can be formed at the same time.

1 and 3, the topsheet 2 in the present embodiment is formed so as to extend in the thickness direction T of the panty liner 1 in the direction toward the skin-facing side of the panty liner 1 Of the panty liner (1), a convex portion (21) protruding from the panty liner (1) and extending continuously in the width direction (W) of the panty liner (1) The concave portions 22 which are hollowed in the direction Db and extend continuously in parallel with the convex portion 21 are provided with the specific concavo-convex structure 20 alternately arranged along the longitudinal direction L The convex portion 21 of the convexo-concave structure 20 has the cavity portion 23 on which the surface 2b of the non-skin facing surface side of the topsheet 2 faces.

As described above, when the topsheet 2 is provided with such a specific concavo-convex structure 20, the panty liner 1 is provided with a concavo-convex structure 20 corresponding to a portion having a large curvature of the wearer It is easy to bend in the longitudinal direction L and can be easily deformed in the longitudinal direction L along the wearer's body shape. By deformation in the longitudinal direction (L), a panty liner 1 is becomes difficult groups displaced is fixed with respect to the wearer, even when the wearer's motion, the panty liner to the longitudinal central area (A _LC) of the above-described (1 (I.e., a region corresponding to the excretion of the wearer) can be steadily positioned, so that the above-mentioned action and effect (that is, excellent absorption performance in the longitudinal center region A _LC ) And an effect of providing a wearer with a comfortable feeling) can be exhibited even when the wearer operates.

In the present embodiment, the convex portion 21 of the specific concavo-convex structure 20 has the above-described cavity portion 23, but the present invention is not limited to such a convex portion 21, The concavo-convex structure of the surface sheet may not have the above-mentioned cavity portion. However, when the nonwoven fabric constituting the topsheet is formed of hydrophilic fibers, it is preferable that the uneven structure has a cavity as described above.

If the topsheet is made of a nonwoven fabric formed of hydrophilic fibers and the convex portion of the concave-convex structure of the topsheet has the above-mentioned cavity portion, the absorbent article having such a topsheet can be used as a liquid- The cushioning property can be exerted by the cavity portion before the absorption, and after the absorption of the liquid excrement, the gap between the hydrophilic fibers of the nonwoven fabric constituting the topsheet is reduced by the liquid excretion, so that the cavity portion is also reduced or lost, Since voids are easily formed between the skin surface and the surface sheet, the liquid excreta held on the surface sheet is difficult to contact the skin surface of the wearer, and the stickiness caused by the liquid excrement becomes difficult to be detected by the wearer. Further, after the absorption of the liquid excrement, the distance between the surface sheet and the layer disposed on the non-skin-facing side of the surface sheet (for example, an intermediate sheet or an absorbent body or the like) This makes it easier for the liquid excreta to migrate from the surface sheet to the layer disposed on the non-skin facing surface side of the surface sheet, making it more difficult for the sticking due to the liquid excreta remaining in the surface sheet to occur.

Therefore, the absorbent article having such a topsheet can provide the wearer with a more comfortable feeling before and after the absorption of the liquid excrement while maintaining the above excellent absorption performance.

In the present invention, the pitch of the convex portions in the concavo-convex structure (that is, the distance (mm) between the centers of the top portions of two neighboring convex portions) is not particularly limited, A pitch within a range of 0.5 mm to 5.0 mm can be adopted, but it is preferably within a range of 1.0 mm to 4.0 mm from the viewpoint of cushioning property and touch. The pitch of the projections is measured as the distance (mm) between the centers of the apexes of the two adjacent projections on the basis of the plane photograph or the plane image of the surface sheet in the no-pressure state .

3, the topsheet 2 according to the present embodiment has the intermediate sheet 4 on the surface 2b on the non-skin-facing side of the concave portion 22 of the concavo-convex structure 20, Respectively. Since this intermediate sheet is not an essential component in the absorbent article of the present invention as described later, when the absorbent article does not have such an intermediate sheet, the surface sheet is formed on the surface of the non- And may be bonded to the absorbent layer or the backsheet (if it does not have an absorbent layer).

The means for joining the topsheet and the constituent members (i.e., the intermediate sheet, the absorbent layer or the backsheet) to the topsheet is not particularly limited and may be any arbitrary joining means such as a hot melt type adhesive, Can be adopted.

The method of forming the above-mentioned specific concave-convex structure on the surface sheet is not particularly limited. For example, a method of spraying a gas (usually air) continuously to a fiber web, a method using gear processing, A method using press molding, a method using heat stretching of thermally stretchable fibers and / or a method using heat shrinkage of heat shrinkable fibers can be adopted. Among them, a method using gear processing is preferable in that the concavo-convex structure and the fluff formation of the above-described fibers can be formed at the same time.

[Intermediate sheet]

3, in the panty liner 1 according to the present embodiment, the intermediate sheet 4 is formed by laminating the topsheet 2 and the backsheet 3 in the thickness direction T of the panty liner 1, So as to reinforce the strength of the topsheet or provide the cushioning property in the thickness direction T of the panty liner 1. Further, when the intermediate sheet is bonded to the topsheet, the strength of the topsheet and hence the strength of the absorbent article are reinforced, making it difficult for the absorbent article to be twisted, so that the wearing comfort of the absorbent article can be further improved.

The sheet material constituting the intermediate sheet is not particularly limited, but a hydrophobic nonwoven fabric is preferably used from the viewpoint of flexibility and difficulty in twisting at the time of wetting. When the hydrophobic nonwoven fabric is used as the intermediate sheet, the degree of hydrophobicity of the hydrophobic nonwoven fabric is sufficient as long as the hydrophobic nonwoven fabric does not absorb the dropped water when water is dropped on the surface of the hydrophobic nonwoven fabric. However, (So-called water repellency) to such a degree that when the water is dripped onto the surface of the hydrophobic nonwoven fabric, the dropped water is repelled from the surface of the hydrophobic nonwoven fabric to form water droplets. If the intermediate sheet is constituted by such a nonwoven fabric having water repellency, even if the absorbent article absorbs and wets the liquid excreta, the absorbent article is hard to be twisted, and a good wearing feeling can be maintained.

The kind of the hydrophobic nonwoven fabric used for the intermediate sheet is not particularly limited, and for example, a nonwoven fabric of the same kind as the above-mentioned surface sheet can be used. Among them, it is preferable to use an air-through nonwoven fabric in that the strength at the time of wetting is easy to maintain (that is, it is easy to maintain good wearing feeling even when the absorbent article is wetted).

The above-mentioned intermediate sheet may be composed of a hydrophobic nonwoven fabric having a single-layer structure using the hydrophobic nonwoven fabric alone, or a hydrophobic laminated nonwoven fabric having a laminated structure using two or more hydrophobic nonwoven fabrics. When the intermediate sheet is composed of the hydrophobic laminated nonwoven fabric, the strength, flexibility and the like at the time of wetting the absorbent article can be easily adjusted by adjusting the number of laminated layers of the hydrophobic laminated nonwoven fabric.

The fibers constituting the hydrophobic nonwoven fabric for use in the intermediate sheet are not particularly limited as long as they have hydrophobicity, and examples thereof include polyolefin fibers such as PE and PP; Polyester fibers such as PET; And various conjugated fibers such as core-sheath type conjugated fibers. The hydrophobic nonwoven fabric used for the intermediate sheet may contain thermally fusible fibers to improve rigidity. In particular, in the case where the above-mentioned surface sheet includes thermally fusible fibers, It is preferable that the thermally fusible fiber is contained at a content (mass ratio) larger than the content (mass ratio) of the fiber. If the hydrophobic nonwoven fabric used for the intermediate sheet contains the heat-sealable fibers in a content larger than the content of the heat-sealable fibers in the surface sheet, the joints (fusion-bonded portions) formed by the fusion of the heat-sealable fibers in the hydrophobic nonwoven fabric, Since the rigidity of the intermediate sheet becomes higher than the rigidity of the surface sheet, the intermediate sheet is difficult to be twisted (particularly, it is difficult to bend in the wet state) It is easy to ensure adequate flexibility and good touch on the above-mentioned surface sheet. As a result, it becomes easy to secure a better fit feeling as the absorbent article.

The basis weight of the intermediate sheet is not particularly limited as long as it does not impair the effect of the present invention, and any basis weight can be adopted in consideration of desired strength and flexibility. The basis weight is, for example, a basis weight in the range of 20 g / m 2 to 200 g / m 2, preferably in the range of 30 g / m 2 to 100 g / m 2. When the intermediate sheet is composed of the above hydrophobic laminated nonwoven fabric, the total basis weight of the basis weight of each layer constituting the hydrophobic laminated nonwoven fabric may be within the above-mentioned range.

The thickness of the intermediate sheet is not particularly limited as long as it does not impair the effect of the present invention. For example, a thickness within the range of 0.01 mm to 8.0 mm can be adopted. However, from the viewpoint of strength and flexibility, Preferably within a range of 0.05 mm to 5.0 mm, and more preferably within a range of 0.1 mm to 3.0 mm. When the intermediate sheet is composed of the hydrophobic laminated nonwoven fabric described above, the total thickness of the respective layers constituting the hydrophobic laminated nonwoven fabric may be within the above-mentioned range.

In the present embodiment, the topsheet 2 and the intermediate sheet 4 are bonded to each other via the first adhesive layer A ₁ made of a hot-melt type adhesive. In the present invention, The form of the sheet is not limited to this form unless the effect of the present invention is not impaired. The top sheet and the intermediate sheet may be joined together by any bonding means such as heat fusion. For example, when the surface sheet and the intermediate sheet are bonded by heat fusion, the joint portion (fused portion) is hardly affected by decomposition or the like caused by liquid excrement such as urine. Therefore, even when the absorbent article is wet, Can be satisfactorily maintained, and it becomes more difficult for the absorbent article to twist. As a result, such an absorbent article can maintain a good wearing feeling even when wet.

In the present embodiment, the intermediate sheet 4 is bonded to the surface 2b of the non-skin facing surface side of the topsheet 2 in the thickness direction T of the panty liner 1 (absorbent article) In the present invention, the intermediate sheet may be bonded to the surface of the surface sheet facing the skin, and in this case, the intermediate sheet preferably has a predetermined liquid permeability. Even when the intermediate sheet is bonded to the surface of the surface sheet facing the skin, the same effect as in the above-described embodiment can be obtained in that the strength of the surface sheet and further the strength of the absorbent article are reinforced.

Further, in the absorbent article of the present invention, since the intermediate sheet is not an essential component, the absorbent article may be structured such that the intermediate sheet is omitted in consideration of the flexibility of the absorbent article.

[Back sheet]

3, the backsheet 3 is disposed at a position on the side of the non-skin-facing surface in the thickness direction T of the panty liner 1, Impermeable sheet which prevents permeation of liquid excrement such as urine discharged from a wearer and prevents the liquid excrement from leaking through wear of the wearer.

The liquid-impermeable sheet constituting the backsheet 3 is not particularly limited, and examples thereof include a resin film such as a hydrophobic nonwoven fabric and breathable polyethylene or polypropylene, a laminate in which a nonwoven fabric is bonded to the resin film, Impermeable sheet such as laminated nonwoven fabric such as SMS can be used. Among these, hydrophobic nonwoven fabrics are preferably used in terms of liquid impermeability, flexibility, and difficulty in tearing at the time of wetting.

In the case of using a hydrophobic nonwoven fabric as the backing sheet, the degree of hydrophobicity is similar to that of the above-mentioned intermediate sheet. It is sufficient that the hydrophobic nonwoven fabric does not absorb the dropped water when the water is dropped on the surface of the hydrophobic nonwoven fabric. The hydrophobic nonwoven fabric is hydrophobic (so-called water repellent) to such an extent that when the water is dripped onto the surface of the hydrophobic nonwoven fabric, the dropped water is repelled from the surface of the hydrophobic nonwoven fabric to form water droplets in terms of difficulty in leakage of the excretion, ) Is more preferable.

The kind of the hydrophobic nonwoven fabric used for the backsheet is not particularly limited as long as it does not impair the effect of the present invention. For example, any hydrophobic nonwoven fabric such as spunbonded nonwoven fabric, point bond nonwoven fabric, meltblown nonwoven fabric, SMS non- Can be adopted. Among these nonwoven fabrics, it is preferable to use a nonwoven fabric including a microfine fiber layer constituted by fibers having a fineness of 1 dtex or less. Such a superfine fibrous layer has excellent air permeability and liquid impermeability, and has appropriate flexibility. Therefore, when the nonwoven fabric containing such a superfine fibrous layer is used as the backsheet, the feeling of fit of the absorbent article can be improved. The lower limit of the fineness of the fibers constituting the ultrafine fiber layer is not particularly limited, but is, for example, about 0.1 dtex.

It is particularly preferable to use SMS nonwoven fabric among the above hydrophobic nonwoven fabrics. The SMS nonwoven fabric is a laminated nonwoven fabric having a three-layer structure of spunbond / meltblown / spunbond. The SMS nonwoven fabric has air permeability and uniform strength (in particular, spunbond layer) , It is possible to more effectively suppress the permeation of the liquid excrement (particularly by the meltblown layer as the microfine fiber layer). Therefore, when such a nonwoven fabric is used as the backsheet, excellent breathability and brittleness It is possible to more effectively suppress leakage of the liquid body excretion while ensuring difficulty (particularly, difficulty in twisting at the time of wetting).

The constituent fibers of the hydrophobic nonwoven fabric for use in the backsheet are not particularly limited as long as they have hydrophobicity, and examples thereof include polyolefin fibers such as PE and PP; Polyester fibers such as PET; And various conjugated fibers such as core-sheath type conjugated fibers.

In the present invention, the basis weight of the backsheet is not particularly limited as long as it does not impair the effects of the present invention, and any basis weight can be employed taking into consideration flexibility, air permeability, liquid impermeability, strength and the like. Such a basis weight is, for example, a basis weight in the range of 8 g / m 2 to 60 g / m 2, preferably in the range of 15 g / m 2 to 50 g / m 2.

The thickness of the backsheet is not particularly limited as long as the effect of the present invention is not impaired. For example, the backsheet may have a thickness within the range of 0.01 mm to 5.0 mm. However, But is preferably in the range of 0.05 mm to 3.0 mm in terms of strength and the like.

[Adhesive layer]

3, the topsheet 2, the intermediate sheet 4 and the backsheet 3 are arranged between the sheets (that is, the topsheet 2 A _first adhesive layer A ₁ and a second adhesive layer A ₂ (hereinafter, referred to as &quot; second adhesive layer A ₂ &quot;) formed by a hot-melt type adhesive disposed in each of the intermediate sheet 4 and the backsheet 3 And are joined to each other. When the topsheet and the intermediate sheet and the intermediate sheet and the backsheet are bonded to each other with the first adhesive layer and the second adhesive layer interposed therebetween, positional deviation and deformation between the topsheet and the intermediate sheet are unlikely to occur So that the absorbing performance of the absorbent article and the feeling of wearing can be more stably maintained.

Further, in the embodiment described above, the first adhesive layer (A ₁₎ and the arrangement pattern of the adhesive in the second adhesive layer (A ₂₎ has, both longitudinally disposed pattern on the plurality of lines the spiral extending in the (L) but , The present invention is not limited to such an arrangement pattern but may employ arbitrary arrangement patterns of a plurality of lines extending in the longitudinal direction and / or the width direction such as omega, wavy, zigzag, stripe, can do.

The first adhesive layer between the top sheet and the intermediate sheet and the second adhesive layer between the intermediate sheet and the back sheet are arranged such that the respective arrangement patterns do not overlap in the thickness direction of the absorbent article So that the arrangement pattern of the first adhesive layer and the arrangement pattern of the second adhesive layer do not overlap). When the first adhesive layer and the second adhesive layer are respectively disposed in an arrangement pattern that does not overlap in the thickness direction of the absorbent article, since the respective bonding points, which can be the starting point of bending, are formed at a predetermined number or more, the strength of the whole absorbent article is improved, Is more difficult to be distorted, and more flexible flexibility can be obtained. As a result, such an absorbent article can secure a better wearing feeling.

In this specification, an arrangement pattern in which the first adhesive layer and the second adhesive layer are not overlapped in the thickness direction of the absorbent article means that the arrangement pattern of the first adhesive layer and the arrangement pattern of the second adhesive layer are completely In addition to the non-overlapping aspect, it also includes an aspect in which each arrangement pattern is partially overlapped in the thickness direction of the absorbent article.

In the above-described embodiment, it is preferable to use a hot-melt type adhesive agent between the respective sheets (that is, between the top- and backsheets 2 and 4 and between the intermediate sheet 4 and the backsheet 3) However, in the present invention, the means for joining the sheets is not particularly limited as long as the effect of the present invention is not impaired. Between the sheets, for example, Or they may be joined together by means. For example, when the respective sheets are bonded by heat fusion, the bonding portion (fused portion) is hardly affected by decomposition or the like caused by liquid excrement such as urine, and therefore, even when the absorbent article is wet, So that it becomes difficult for the absorbent article to further distort. As a result, such an absorbent article can maintain a good wearing feeling even when wet.

Next, a second embodiment, which is another embodiment of the present invention, will be described in detail with reference to the drawings. The configuration other than the above-described first embodiment is basically the same as that of the first embodiment described above, so that the description is omitted.

4 is a plan view of the panty liner 10 according to the second embodiment of the present invention. As shown in Fig. 4, the panty liner 10 according to the second embodiment has the one side edge portion E _W1 and the other side edge portion E _{W2 in} the width direction W And is disposed between the one side edge portion (E _W1 ) and the widthwise central axis (C _L ) extending in the longitudinal direction (L) and extending in the longitudinal direction (L) Is positioned between a longitudinal first virtual straight line L _L1 and the other side edge portion E _W2 and a widthwise central axis C _L extending in the longitudinal direction L, And a second longitudinal imaginary straight line L _L2 extending in the longitudinal direction of the _{vehicle body} ; A first width direction area (A _W1 ) positioned between the one side edge portion (E _W1 ) and the first longitudinal virtual line (L _L1 ); And a second widthwise area (A _W2 ) located between the other side edge (E _W2 ) and the second longitudinal straight line ( _L2 ), wherein the topsheet (2) , The amount of fuzz formation of the fibers constituting the nonwoven fabric in the widthwise central region (A _WC ) is larger than the widthwise width direction of the fibers in the widthwise first region (A _W1 ) and the widthwise second region (A _W2 ) Is greater than the amount of fuzz formation of the fibers in the end regions.

Further, in the present invention, the position of the first virtual straight line in the longitudinal direction between the one side edge portion in the width direction and the width direction central axis line, the position of the other side edge portion in the width direction, , The position of the second virtual straight line in the longitudinal direction is set such that the widthwise center region described above includes the region corresponding to the excretion of the wearer in the width direction (i.e., the width direction length of the above- Is longer than the length in the width direction of the area corresponding to the excretion of the wearer). For example, in the above-described second embodiment, the first virtual straight line L _L1 in the longitudinal direction and the second virtual straight line L _{L2 in the} longitudinal direction are arranged at positions that divide the panty liner 1 in three directions in the width direction Respectively.

The panty liner 10 according to the second embodiment has the same configuration as the panty liner 1 according to the first embodiment except that it is configured as described above.

That is, in the panty liner 10 according to the second embodiment as well, the topsheet 2 protrudes toward the skin-facing side of the panty liner 10 in the thickness direction T, W of the panty liner 10 in the thickness direction T and a plurality of protrusions 21 extending continuously in parallel with the convex portion 21 in the thickness direction T toward the non- And concave portions (22) that are formed in the concave portions (20) are alternately arranged.

The panty liner 10 according to the second embodiment is designed such that the amount of fluffing of the fibers in the widthwise central region A _WC of the topsheet 2 made of a nonwoven fabric is smaller than the amount (In other words, the amount of fuzz formation of the fibers in the width direction end region is larger than the amount of fuzz formation of the fibers in the width direction first region (A _W1 ) and the width direction second region (A _W2 ) In the widthwise central region A _{WC which} is less likely to be influenced by the operation of the wearer because of the presence of the fibers in the widthwise central region A _WC (Particularly, a motion in a width direction or a warping direction (a direction in which the wearer wiggles in the longitudinal direction L) is large) An unpleasant stimulus such as a tingling sensation due to the fluff formation on the fibers is hardly detected by the wearer in the end portion in the vapor width direction, and a good wearing feeling can be provided to the wearer.

In the panty liner 10 of the present embodiment as well, the topsheet 2 includes a convex portion 21 continuously extending in the width direction W of the panty liner 10, The concave portions 22 extending continuously in parallel with the concave portions 22 are arranged alternately in the concave and convex portions 20 of the crotch portion. , So that it can be easily deformed in the longitudinal direction L along the wearer's body shape. By deformation in the longitudinal direction (L), a panty liner 10 is becomes difficult goes against fixed with respect to the wearer, also, a panty liner (10 a widthwise central region (A _WC) of the above at the time of the wearer's behavior (That is, excellent absorbing performance in the widthwise central region A _WC ), it is possible to obtain a good fit feeling Can be provided to the wearer) can be exerted even in the operation of the wearer.

[Absorbent layer]

The panty liner in each of the above-described embodiments is formed such that the topsheet 2 can function as an absorbent layer. Therefore, an absorbent layer such as an absorbent for absorbing and holding liquid excrement such as urine is installed separately However, in the absorbent article of the present invention, such an absorbent layer may be provided as long as the effect of the present invention is not impaired. Specifically, the absorbent article of the present invention absorbs liquid excrement at a position between the topsheet and the intermediate sheet and / or between the intermediate sheet and the backsheet, for example, so long as the effect of the present invention is not impaired. An absorbing layer capable of holding can be disposed. For example, if such an absorbent layer is disposed between the topsheet and the intermediate sheet, the liquid excretion permeated through the topsheet is absorbed and held in the absorbent layer, so that leakage or backflow of the liquid excretion from the absorbent article can be suppressed As a result, a good fit of the absorbent article can be provided more reliably to the wearer.

The absorbent layer is not particularly limited as long as it can absorb and hold liquid excreta, and any absorbent known in the art can be used. Examples of such an absorber include an absorbent core composed of an absorbent material covered with a core wrap sheet such as a tissue having hydrophilic properties, and the like. Examples of the absorbent material constituting the absorbent core include hydrophilic fibers and superabsorbent polymers, and more specifically, cellulose fibers such as pulverized pulp and cotton; Regenerated cellulose fibers such as rayon, fibril Rayon and the like; Semi-synthetic cellulose fibers such as acetate and triacetate; A particulate material comprising a highly water-absorbing polymer such as a sodium acrylate copolymer; And any combination of two or more species.

Further, the present invention can be applied to various absorbent articles such as a sanitary pad, a light incontinence pad, etc. in addition to the panty liner of each of the above-described embodiments. In addition, the absorbent article of the present invention is not limited to the above-described embodiment, but can be suitably combined or changed within the scope of the present invention. In this specification, the ordinal numbers such as "first", "second" and the like are used to distinguish matters attached with the order, and do not mean order, priority, importance, etc. of each item.

1: panty liner (an example of an absorbent article)
2: surface sheet 20: concave and convex structure
21: convex portion 22: concave portion
23: Cavity 3:
4: intermediate sheet 5: peeling sheet
6: pressure-sensitive adhesive layer 7:
A _LC : longitudinal central region
A _L1 : a longitudinal direction first region
A _L2 : a longitudinal second region
E _L1 : one side edge portion in the longitudinal direction
E _L2 : the other end edge portion in the longitudinal direction
C _W : longitudinal center axis extending in the width direction
L _W1 : first virtual straight line in the width direction
L _W2 : second virtual straight line in the width direction

Claims (4)

An absorbent article comprising a topsheet made of a nonwoven fabric and having a longitudinal direction, a width direction and a thickness direction orthogonal to each other,
Wherein the absorbent article has one side edge portion and the other side edge portion in the longitudinal direction,
Further, the absorbent article may be provided in a plan view (in plan view)
A first imaginary straight line extending in the width direction and located between the one side edge portion and the longitudinally extending central axis extending in the width direction and a second imaginary straight line extending between the other side edge portion and the longitudinal center axis And a second central region extending in the width direction and a second central region extending in the width direction,
A longitudinal first region positioned between the one side edge portion and the first widthwise imaginary straight line,
And a second longitudinal direction region located between the other side edge portion and the second widthwise imaginary straight line,
Wherein the surface sheet is formed in such a manner that the amount of fluff of the fibers constituting the nonwoven fabric in the longitudinally central region is larger than the amount of fluffs of the fibers in the longitudinal direction end region comprising the longitudinal first region and the longitudinal second region Lots more than lint,
The surface sheet may further include a convex portion protruding toward the skin-facing surface side of the absorbent article in the thickness direction and extending continuously in the width direction, and a non- And concave and convex structures alternately arranged in the concave portion extending continuously in parallel with the convex portion toward the skin facing surface side. An absorbent article comprising a topsheet made of a nonwoven fabric and having a longitudinal direction, a width direction and a thickness direction orthogonal to each other,
Wherein the absorbent article has one side edge portion and the other side edge portion in the width direction,
Further, the absorbent article may be provided at a flat surface,
A first virtual straight line extending in the longitudinal direction and positioned between the one side edge portion and the widthwise central axis extending in the longitudinal direction, and a second imaginary straight line extending in the longitudinal direction between the other side edge portion and the width A widthwise central region located between the longitudinal centerline axial line and a second longitudinal virtual line extending in the longitudinal direction,
A first width-wise area positioned between the one side edge and the first longitudinal virtual line,
And a second width-direction area located between the other end edge portion and the second longitudinal virtual line,
The surface sheet is characterized in that the amount of fluffing of the fibers constituting the nonwoven fabric in the widthwise central region is larger than the amount of fluffs of the fibers in the widthwise end region comprising the widthwise first region and the widthwise second region Lots more than lint,
The topsheet may further include a convex portion protruding toward the skin-facing surface side of the absorbent article in the thickness direction and extending continuously in the width direction, and a convex portion extending continuously in the width direction, And concave and convex structures alternately arranged in the concave portion extending continuously in parallel with the convex portion. 3. The method according to claim 1 or 2,
Wherein the fibers constituting the nonwoven fabric are hydrophilic fibers. The method of claim 3,
Wherein the convex portion has a hollow portion in which the surface of the non-skin-facing surface side of the surface sheet faces.

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