TW201722380A - Absorbent article - Google Patents

Abstract

Provided is an absorbent article whereby a wearer can ascertain the softness of the absorbent article (1) prior to wearing and the wearer can have a sense of expectation about the wearing comfort of the absorbent article. The absorbent article has: an absorbent body (30) arranged in a crotch region (S1) and a rear-side region (S3); a surface sheet (11) arranged on a skin-facing surface side of the absorbent body; and an adhesion section (60) that detachably joins to underwear. The absorbent body has: an absorbent core (31) having an absorbent material; and a core wrap (32) comprising a non-woven fabric. The surface sheet has: a first layer (111) comprising a non-woven fabric; and a second layer (112) arranged further on the non-skin-facing surface side than the first layer and comprising a non-woven fabric including a fiber having a thicker diameter than the first layer. The rear-side region has: a compression region (51) having a compression section arranged therein; and a non-compression region (52) not having a compression section arranged therein. The compression section is provided in the absorbent core and the surface sheet and the non-compression region continuously extends from one end of the absorbent body to the other end thereof, in the width direction (W).

Description

Absorbent article

The present invention relates to an absorbent article such as a sanitary napkin.

The conventional absorbent article has a lower femoral domain, a posterior region located on the posterior side of the femoral region, an absorbent body disposed in the lower femoral region and the posterior region, and an opposite surface of the skin disposed on the absorbent article. The surface sheet and the engaging portion that is detachably engaged with the underwear (for example, refer to Patent Document 1).

When the user attaches the absorbent article of Patent Document 1 to the underwear, the user generally fixes the lower region of the underarm which is disposed under the user's strand to the underwear, and fixes the rear region to the underwear. At this time, for example, after the user touches the surface sheet of the lower femoral region, the user slides the hand toward the rear to press and fix the absorbent article to the underwear.

[Practical Technical Literature] [Patent Literature]

Patent Document 1: Japanese Patent Publication No. 2008-520401

According to the investigation of the applicant, it has been found that the user obtains a sense of expectation for the absorbent article based on the tactile sensation when the user traces the opposite side of the skin of the absorbent article by the finger, and the expectation affects the installation. Installation sense.

In the absorbent article of Patent Document 1, when the hand contacting the surface sheet of the lower femoral region is slid rearward, the finger comes into contact with the press portion provided in the rear side region. The user does not easily have a soft impression on the absorbent article if the hardness of the press portion is felt during installation. Therefore, the user does not easily expect the comfort of the absorbent article, and has an adverse effect on the mounting feeling.

The present invention has been made in view of the above problems, and an object thereof is to provide an absorbent article in which the user can grasp the softness of the absorbent article before installation, and the user can obtain a feeling of expectation for the comfort of the absorbent article.

The absorbent article of the present invention is an absorbent article comprising: a front-rear direction (front-rear direction L) and a width direction (width direction W) perpendicularly intersecting each other, and a sub-segment field disposed under the strand of the user (sub-sand field S1) And a rear side domain (rear side domain S3) located on the rear side of the lower femoral domain, and an absorber (absorbent body 30) disposed in the lower femoral domain and the rear side domain, and the absorber disposed in the absorber a surface sheet (surface sheet 11) on the opposite side of the skin, and an engaging portion (adhesive portion 60) detachably engaged with the underwear, the absorbent body having: absorbing An absorbent core (absorbent core 31) of the material, and a core wrap (core wrapper 32) composed of a non-woven fabric covering the absorbent core, the surface sheet having a first layer composed of a non-woven fabric 1 layer 111) and a second layer (second layer 112) which is disposed on a non-skin facing surface side of the first layer and which is made of a fiber having a diameter larger than that of the first layer, and The side field has a press section in which the press section is disposed (the press section 51), and a non-pressing section (non-pressing section 52) in which the press section is not disposed, and the press section is provided on the absorbent core and the surface The sheet, in the non-pressing field, continuously extends from one end to the other end of the absorber along the width direction.

1‧‧‧Absorbables

10‧‧‧Skin sheet

11‧‧‧Surface

111‧‧‧1st floor

112‧‧‧2nd floor

12‧‧‧ side flakes

15‧‧‧ wing sheet

20‧‧‧Non-skin sheet

30‧‧‧Acceptor

31‧‧‧Absorbent core

32‧‧‧core wraps

321‧‧‧1st core wrap

322‧‧‧2nd core wrap

41‧‧‧1st low basis weight

42‧‧‧2nd low basis weight

43‧‧‧3rd low basis weight

45‧‧‧High base

61‧‧‧1st body bonding

62‧‧‧2nd body bonding

63‧‧‧Flap bonding

64‧‧‧Opacity flap bonding

81‧‧‧Front side press section

82‧‧‧Long press section

84‧‧‧Back side press section

L‧‧‧ direction

W‧‧‧Width direction

T‧‧‧ thickness direction

S1‧‧‧Sub-domain

S2‧‧‧ front side domain

S3‧‧‧ Back side domain

CL‧‧‧ center line

[Fig. 1] A plan view of an absorbent article in an embodiment.

[Fig. 2] A plan view of the absorbent article as seen from the opposite side of Fig. 1.

[Fig. 3] A cross-sectional view of the absorbent article taken along line A-A of Fig. 1.

[Fig. 4] A schematic cross-sectional view of a surface sheet.

[Fig. 5] A plan view showing an absorbent article in the press field and the non-pressing field.

[Fig. 6] A schematic perspective view of an absorbent article in use.

Hereinafter, the absorbent article of the embodiment will be described with reference to the drawings. The absorbent article may be any absorbent article such as a sanitary pad (discrete sheet) or a sanitary napkin or an incontinence pad. In the following examples, physiological sanitary napkins discarded after use of one of the absorbent articles will be described.

In the following description of the drawings, the same or similar symbols are attached to the same or similar parts. However, the drawings are only schematic, and it should be noted that the ratios of the respective dimensions and the like are different from the reality. Therefore, the specific dimensions, etc., should be judged by the following instructions. Further, there are also portions having different dimensional relationships and ratios between the drawings.

(1) The overall composition of the absorbent article

Fig. 1 is a plan view of an absorbent article in an embodiment. Fig. 2 is a plan view of the absorbent article as seen from the side opposite to Fig. 1. Fig. 3 is a cross-sectional view of the absorbent article taken along line A-A of Fig. 1.

The absorbent article 1 has a front-rear direction L, a width direction W, and a thickness direction T. The front-rear direction L is a direction extending from the front side (ventral side) of the user toward the rear side (back side) or a direction extending from the rear side of the user toward the front side. The width direction W is a direction perpendicular to the front-rear direction L. The thickness direction T is a direction extending from the user's skin facing surface side T1 toward the non-skin opposing surface side T2, and perpendicularly intersecting the front-rear direction L and the width direction W. The skin side T1 is the side that faces the skin of the user when in use. The non-skin-facing side T2 is the opposite side to the skin-facing side T1 when in use, which is equivalent to the orientation. The opposite side of the user's skin.

The absorbent article 1 has a lower femoral domain S1, a front side domain S2, and a rear side domain S3. The sub-femoral field S1 is the field of the excretory opening (e.g., the vaginal opening) facing the user. When the absorbent article is installed in the underwear, the lower strand S1 is located in the lower part of the undergarment. That is, the sub-small field S1 is placed under the user's stock, that is, the field between the user's feet.

The front side field S2 is located on the front side of the sub-stomach field S1. The front end edge of the front side field S2 defines the front end edge of the absorbent article 1. The posterior field S3 is located on the posterior side of the sub-stomach region S1. The rear end edge of the rear side region S3 is a rear end edge defining the absorbent article 1. The length of the front-back direction L of the rear side region S3 may be longer than the length of the front-back direction L of the sub-sag region S1.

In the sub-sand field S1, a fin 3 to be described later can be provided. Further, in the rear side region S3, the hip fins 4 that are expanded toward the outside in the width direction W may be provided.

The front end edge of the flap 3 is defined by the root of the flap 3, and the two portions recessed toward the innermost side in the width direction W correspond to the portion on the front side. The front end edge of the flap 3 may be a boundary between the predetermined sub-small field S1 and the front side domain S2. The rear end edge of the flap 3 is defined by the root of the flap 3, and the two portions recessed toward the innermost side in the width direction W correspond to the portion on the rear side. The rear end edge of the flap 3 may be a boundary between the predetermined sub-small field S1 and the rear side domain S3. Here, the field between the front end edge of the flap 3 in the front-rear direction L and the rear end edge of the flap 3 is referred to as a "flap field". In the absorbent article 1 having the flaps 3, the sub-sands field S1 is substantially the same field as the flap field. Therefore should stay In this specification, the term "sub-domain S1" can be replaced with "wing field".

The absorbent article 1 has a skin sheet 10, a non-skin sheet 20, and an absorbent body 30. The skin surface sheet 10 is provided on the skin-facing side T1 of the absorbent body 30. The non-skin surface sheet 20 is provided on the skin-facing side T2 of the absorbent body 30. The absorbent body 30 is provided between the skin surface sheet 10 and the non-skin surface sheet 20.

The skin surface sheet 10 may have a surface sheet 11 and a side sheet 12. The surface sheet 11 is a liquid permeable liquid permeable sheet such as a body fluid. The surface sheet 11 covers the central portion of the absorber 30 in the width direction W. The surface sheet 11 extends in the front-rear direction L from the front side domain S2 to the rear side domain S3.

The surface sheet 11 is composed of any sheet-like material having a liquid permeable structure such as a nonwoven fabric, a woven fabric, a perforated plastic sheet, or a mesh sheet. For the woven and non-woven materials, any of natural fibers and chemical fibers can be used.

The side sheet 12 covers the outer edge of the surface sheet 11 in the width direction W and extends outward in the width direction W from the surface sheet 11. Further, in the present embodiment, the absorbent article 1 has the side sheets 12, but the absorbent article 1 may have no side sheets 12. In this case, the surface sheet 11 can cover the entire absorbent body 30.

The side sheet 12 can be composed of the same material as the surface sheet 11. However, in order to prevent the body fluid adhering to the surface sheet 11 from passing over the side sheet 12, it leaks toward the outside of the absorbent article 1 in the width direction W, The side sheet 12 is preferably hydrophobic or water repellency. The side sheet 12 can be disposed on the outer edge of the absorber 30 in the width direction W, the flap 3, and the hip piece 4.

The non-skin sheet 20 is a liquid impermeable sheet. As the non-skin surface sheet 20, a laminated non-woven fabric mainly composed of a polyethylene sheet or polypropylene, a ventilated resin film, a spun bond, or a non-woven fabric such as a spunlace may be used to bond a sheet of an air-permeable resin film. The non-skin surface sheet 20 is disposed on the non-skin opposing surface side T2 of the absorber 30, and is disposed across the flap 3 and the hip sheet 4. The non-skin surface sheet 20 is a non-skin surface constituting the absorbent article 1. In addition, the sheet disposed on the non-skin opposing surface side T2 of the absorbent body 30, the sheet disposed on the flap 3, and the sheet disposed on the hip flap 4 may be integrated as in the present embodiment. It may be composed of individual sheets.

The absorber 30 is disposed at least in the lower femoral region S1 and the rear side region S3. Further, the absorber 30 may extend from the sub-sag region S1 to the front side region S2. The absorber 30 has an absorbent core 31 including an absorbent material that absorbs liquid, and a core wrap 32 that covers the absorbent core 31.

The core wrap 32 may cover the absorbent core 31 at least on the skin-facing side of the absorbent core 31. Specifically, the core wrap 32 may have a first core wrap 321 disposed on the skin-facing side of the absorbent core 31 and a non-skin-facing side of the absorbent core 31. The second core wrap 322. The first core package 321 and the second core package 322 may be formed of the same sheet. The absorbing material constituting the absorbent core 31 is, for example, hydrophilic Fiber, pulp and superabsorbent polymer (SAP) are formed. The core wrap 32 may be composed of a non-woven fabric. The core wrap 32 may be hydrophobic. The core wrap 32 is hydrophobic and can improve leakproofness.

The center of the first core wrapping 321 in the width direction is disposed on the skin facing surface side T1 of the absorbent core 31. The first core wrapping 321 is folded back toward the non-skin opposing surface side T2 of the absorbent core 31 with the outer edge of the absorbent core 31 as a base point. The cross-sectional view of the absorbent article 1 shown in Fig. 3 is a state in which the first core wrapping 321 is folded back. In the unfolded state in which the first core wrap 321 is not folded back, the center of the first core wrap 321 in the width direction is located at the center in the width direction of the absorbent core 31, and the outer edge 321E of the first core wrap 321 is It extends outward in the width direction from the absorbent core 31.

The outer edge 321E of the first core package 321 in the unfolded state of the first core package 321 is disposed in the width direction of the outer edge T2 of the absorbent core 31 or the outer edge of the absorbent core 31. The outside can also be. The outer edge 321E of the first core wrapping 321 of the present embodiment is disposed on the non-skin opposing surface side T2 of the second core wrapping 322 located on the non-skin opposing surface side T2 of the absorbent core 31. In addition, the outer edge 321E of the first core package 321 extends outward in the width direction of the absorbent core 31, and is disposed on the non-skin opposing surface side T2 of the side sheet 12 and the non-skin opposing surface side T2 of the surface sheet 11. Also.

As described above, the absorbent article 1 has the flap 3 and the hip flap 4. The flap 3 and the hip flap 4 are the absorbent core 31 in the lower sub-field S1. The outer edge extends more outward in the width direction W.

The flap 3 and the hip flap 4 may be formed by laminating the side sheet 12, the flap sheet 15, and the non-skin sheet 20. The flap sheet 15 is disposed across the sub-sand domain S1, the front side domain S2, and the rear side domain S3. The fin piece 15 is disposed on the flap 3 and the hip piece 4. Further, the fin piece 15 may be disposed at least in the rear side region S3. The flap sheet 15 may be disposed at least on the hip fins 4.

The flap 3 is configured to be folded back toward the non-skin surface sheet 20. The flap 3 is folded back toward the non-skin opposing side T2 of the crotch portion of the underwear at the time of use. The hip flap 4 is located on the rear side of the flap 3 and is disposed in the rear side region S3. The hip flap 4 extends outward in the width direction from the outer edge of the absorbent core 31 of the lower strand region S1. The field in which the hip fins 4 are disposed is located outside the outer edge of the absorbent core 31 of the lower strand field S1 in the width direction. The hip flap 4 is not folded back during use and is disposed between the undergarment and the user's buttocks. In the present embodiment, no absorbent material is provided in the hip flap 4. Instead of this, an absorbing material may be provided in the hip fin 4 .

The outer edge 4E of the hip piece 4 is an arc shape that expands outward in the width direction. The side edge of the hip piece 4 can be formed into a shape having a waveform of a plurality of convex portions 4F. The plurality of convex portions 4F are preferably extended from the outer edge 4E of one of the hip fins 4 through the rear end edge of the rear side region S3 to the outer edge 4E of the other hip flap 4. Instead of this, the plurality of convex portions 4F may be formed only on the outer edge 4E of the pair of hip fins 4. The width of each convex portion 4F is preferably 20 mm or less, more preferably 10 mm or less. Further, the width of each convex portion 4F is preferably 3 mm or more.

Further, in the side edges of the hip fins 4, the plurality of convex portions 4F and the concave portions between the convex portions 4F are alternately formed. When a partial force is applied to the outer edge 4E of the hip piece 4 from the outside, a small number of convex portions 4F provided near the point of application of the force are folded back. However, since the gaps (concave portions) are formed between the convex portions 4F, the force applied to the certain convex portions 4F is difficult to convey to the adjacent convex portions 4F. As a result, it is possible to suppress the hip flap 4 from being largely curled with the convex portion 4F applied with a local force as a base point.

The measurement of "thickness" in the present specification is performed by the following measurement method.

When the absorbent article 1 is sealed in a package or the like, it is taken out from the package, and a sample placed in an atmosphere of 20 ° C ± 2 ° C and a relative humidity of 60 % ± 5% RH for 12 hours is used.

At the time of measurement, it is not measured in a state in which the absorbent article is shrunk, but in a state in which the stretchable member of the absorbent article is stretched. A needle gauge PEACOCK manufactured by Ozaki Seisakusho Co., Ltd. was used. The measuring piece was a test piece having a diameter of 10 mm and a size of 30 mm × 30 mm, and the thickness of the test piece was measured. The measuring instrument was adjusted so that the measurement pressure of the test piece became 3 g/cm ² . Here, for the 10 samples, the above measurement was performed in each state, and the average value was taken as the length.

In addition, the measurement of the basis weight (weight per unit area) and density of the absorbent core in the present specification is carried out by the following measurement methods.

When the absorbent article 1 is sealed in a package or the like, it is taken out from the package and used in this state at 20 ° C ± 2 ° C, relative humidity. A sample of 12 hours was placed in an atmosphere of 60% ± 5% RH.

The package was unsealed in the absorbent article packaged by the package, and the folded absorbent article was unfolded, and the thickness and area of the portion measured by the basis weight and density were measured. Next, the portion where the basis weight and the density were measured was cut out from the absorbent article, and the weight of the cut portion was measured. Next, the portion other than the absorbent core such as the surface sheet and the core wrap was removed from the cut portion, and the weight of the absorbent core was measured. The basis weight was calculated from the weight of the absorbent core and the area of the portion measured by the basis weight and density. The density is calculated based on the basis weight and thickness.

The measurement of "length" in this specification is performed by the following measurement methods.

When the absorbent article 1 is sealed in a package or the like, it is taken out from the package, and a sample placed in an atmosphere of 20 ° C ± 2 ° C and a relative humidity of 60 % ± 5% RH for 12 hours is used.

Next, using a spring measuring instrument (tape: glass fiber-containing and coated with polyvinyl chloride) manufactured by SINWA Measurement Co., Ltd., the length of this state of the measurement target portion was measured along the measurement target portion. Here, for the 10 samples, the above measurement was performed in each state, and the average value was taken as the length.

(2) Detailed composition of the absorber

Next, the configuration of the absorber 30 will be more specifically described. The absorbent body 30 is at least in the sub-femoral region S1 and has a middle-high portion 33. The middle and high portion 33 may extend from the sub-stomach region S1 toward the front side domain S2. The middle and high section 33 is in In the sub-sand field S1, it is arranged across the center line CL. The center line CL is a line extending in the front-rear direction L through the center of the absorbent article in the width direction.

The middle-high portion 33 is a field in which the thickness of the absorbent core 31 is thicker than the thickness of the absorbent core 31 in the region around the middle-high portion 33. The basis weight of the absorbing material of the middle-high portion 33 may be higher than the basis weight of the absorbent core 31 in the field other than the middle-high portion 33 in the sub-sown region S1. The middle portion 33 can be adjacent to the first low basis weight portion 41 to be described later. Preferably, the absorbent core 31 on the rear side of the first low basis weight portion 41 is thinner than the thickness of the middle-high portion 33. More preferably, the absorbent core 31 of the entire rear side region S3 is thinner than the thickness of the middle portion 33. The middle portion 33 has the highest portion having the thickest thickness and the inclined portion connected to the highest portion. The inclined portion can be disposed between the highest portion and the front side press portion 81 to be described later, and between the highest portion and the first low basis weight portion 41.

The absorbent core 31 may have a first low basis weight portion 41, a second low basis weight portion 42, and a third low basis weight portion 43. Here, the "low basis weight portion" is a field composed of the absorbent core 31 having a lower basis weight than the surrounding absorbent core 31, or a field having no absorbent core 31. Thus, the "low basis weight portion" is a concept including a field in which the basis weight of the absorbent core 31 is zero.

In other words, the "low basis weight portion" may be a slit that penetrates the absorbent core 31 in the thickness direction T. Slotting, although the basis weight of the design is zero, it is also possible to arrange the absorbing material mixed from the periphery. The length of the slit in the width direction W is preferably from 1 mm to 5 mm. For example, slotted When the length in the width direction is less than 1 mm, the absorbing material flows into the slit and does not constitute the deformation base point of the absorbent core 31. Further, if the length of the slit in the width direction is more than 5 mm, the user may feel uneasy about the leakage of the body fluid.

The basis weight of the absorbent core 31 in the low basis weight portions 41 to 43 is preferably 150 g/m ² or less, more preferably 100 g/m ² or less. Further, the basis weight of the absorbent core 31 in the low basis weight portions 41 to 43 is further preferably substantially 0 g/m ² . Further, the basis weight of the absorbent core 31 in the low basis weight portions 41 to 43 is preferably 60% or less of the basis weight of the absorbent core 31 (excluding the middle and high portions) around the low basis weight portions 41 to 43, 50%. The following is better.

The "low basis weight portion" is a region in which the absorbent core 31 is not provided, and the core wrap 32 may surround the entire low-weight portion across the absorbent core 31. In this case, even if the absorbent core 31 is divided into a plurality of domains, the absorbent body 30 is integrally formed by the core wrap 32.

The first low basis weight portion 41, the second low basis weight portion 42, and the third low basis weight portion 43 are boundary lines that change the rigidity of the absorber 30. Therefore, the first low basis weight portion 41, the second low basis weight portion 42, and the third low basis weight portion 43 correspond to a field in which the absorber 30 is easily deformed.

The first low basis weight portion 41 extends in the width direction W between the lower femoral region S1 and the rear side region S3. The first low basis weight portion 41 may extend linearly in the width direction W or may extend in a curved shape along the width direction W.

The first low basis weight portion 41 can be provided on the rear side of the center of the fin 3 in the front-rear direction L and on the front side of the rear side edge of the absorber 30. The first low basis weight portion 41 may be provided so as to straddle the rear end edge of the flap 3 in the front-rear direction L.

In the present embodiment, the first low basis weight portion 41 has a curved shape in which the center of the width direction W of the first low basis weight portion 41 protrudes rearward. More specifically, the center of the width direction W of the first low basis weight portion 41 is located rearward than the outer edge of the first low basis weight portion 41. The length of the first low basis weight portion 41 in the front-rear direction L may be constant, and may not necessarily be sufficient. The sub-sag region S1 located on the front side of the first low basis weight portion 41 is a force that is easily twisted by the action of the foot by being held by both feet. In the absorbent article 1, since the first low basis weight portion 41 has a curved shape, it is easy to follow the twist of the body, and it is easy to avoid deformation caused by the movement of the body.

Preferably, the length of the first low basis weight portion 41 in the width direction W is 25 mm or more. Thereby, it is possible to suppress the movement of the absorber 30 in the sub-femoral region S1 to be transmitted to the rear side region S3. More preferably, the first low basis weight portion 41 extends from one end to the other end of the absorber 30 in the width direction W. In this case, the front end edge of the first low basis weight portion 41 may be the rear end edge of the predetermined lower sub-body region S1, and the rear end edge of the first low basis weight portion 41 may be the front end edge of the predetermined rear side region S3.

The first low basis weight portion 41 is an absorbent material that constitutes the absorbent core 31 by extending from one end to the other end of the absorbent body 30 in the width direction W. However, the first low basis weight portion 41 moves between the lower femoral region S1 and the rear side region S3. difficult. Therefore, it is possible to further suppress the local concentration of the absorbing material constituting the absorbent core 31 by the action during wearing.

The length of the first low basis weight portion 41 in the front-rear direction L is preferably 10 mm or more and 50 mm or less, more preferably 10 mm or more and 30 mm or less at the position of the center line CL of the absorbent article 1.

The absorbent article 1 of the embodiment can be independently deformed in the lower femoral region S1 and the rear side domain S3 by having the first low basis weight portion 41. More specifically, the length of the first low basis weight portion 41 has a length of 10 mm or more, and the first low basis weight portion 41 extends from one end to the other end, and the absorbent article is at the first low basis weight portion. 41 is also deformable in a direction other than the thickness direction T, and deformations of the sub-sag region S1 and the rear side region S3 do not interfere with each other and can be independently deformed. As a result, even if a wide variety of external forces are applied to the absorbent article 1 by the action of the user in the lying posture and the walking, the sub-small field S1 and the rear side domain S3 are independently deformed, and the underside The domain S1 and the rear side domain S3 can be continuously fitted to each other in the shape of the body.

Since the mid-high portion 33 is provided in the sub-femoral region S1, the absorption performance of the sub-femoral region S1 can be ensured, and the fit of the sub-femoral region S1 can be improved. In the absorbent article 1 of the embodiment, the lower femoral region S1 can be followed along the body, and the rear side region S3 can follow the movement of the body.

The second low basis weight portion 42 is located at the center in the width direction of the absorbent core 31 in the rear side region S3. The second low basis weight portion 42 extends in the front-back direction L along the center line CL of the absorbent article 1 in the rear side region S3. The second low basis weight portion 42 can linearly extend in the front-rear direction L. The second low basis weight portion 42 is preferably connected to the first low basis weight portion 41. The second low basis weight portion 42 corresponds to the front and rear low basis weight portions.

The absorbent material constituting the absorbent core 31 is composed of the first low basis weight portion 41 and the second low basis weight portion 42 in the lower portion S1 (or the flap region), the right side portion of the rear side region S3, and the rear portion. It is difficult to move between the left side portions of the side field S3. Thereby, it is possible to suppress the partial absorption of the absorbing material constituting the absorbent core 31 by the action during wearing. As a result, in the wearing of the absorbent article 1, the feeling of the user can be alleviated. Therefore, the user, in particular, in a lying position, is less likely to feel a strange feeling.

In the rear side region S3, if the side portion of the absorbent core 31, that is, the high basis weight portion 45 is pressed by the left and right buttocks, the center of the width direction W of the absorbent core 31 of the rear side region S3 is the second The low basis weight portion 42 as a vertex bulges toward the user side. Therefore, during wearing, the second low basis weight portion 42 protrudes toward the skin side of the user. Since the second low basis weight portion 42 extends in the front-rear direction L in the rear side region S3, it is easy to bond along the groove of the user. Further, as described above, the absorbent article is easily deformed independently in the lower femoral region S1 and the rear side region S3 by the first low basis weight portion 41. In other words, the absorbent article 1 can be bonded to the shape of the body in both the lower femoral region S1 and the posterior region S3 by being independently deformed in the lower femoral region S1 and the posterior region S3.

The rear end edge of the second low basis weight portion 42 may be located further rearward than the center of the rear side region S3 in the front-rear direction L. Further, the rear end edge of the second low basis weight portion 42 may be located further rearward than the position P1 of the maximum amplitude of the hip piece 4 . The position P1 of the maximum amplitude of the hip fins 4 is located further rearward than the center of the rear side field in the front-rear direction L. The length of the second low basis weight portion 42 in the front-rear direction L is preferably 120 mm or more, and more preferably 150 mm or more. good. Preferably, the length of the second low basis weight portion 42 in the width direction W is 1 mm or more and 5 mm or less. In the section along the front-rear direction L of the user's body, the groove (groove) between the buttocks exists in a field from the rear of the perineum to the coccyx. In the use of the absorbent article 1, the second low basis weight portion 42 is disposed in the field of the user's sulcus.

The third low basis weight portion 43 extends outward from the second low basis weight portion 42 in the width direction W in the rear side region S3. The third low basis weight portion 43 may be connected to the second low basis weight portion 42. The third low basis weight portion 43 corresponds to a low basis weight portion. The edge of the front side of the third low basis weight portion 43 may be substantially parallel to the width direction W in the inner side in the width direction W. Further, the edge line of the front side of the third low basis weight portion 43 may protrude forward in the outer side in the width direction W. The edge line of the rear side of the third low basis weight portion 43 may be inclined forward from the inner side toward the outer side in the width direction W. Since the rigidity is changed by the third low basis weight portion 43 as a boundary, the third low basis weight portion 43 serves as a base point for deformation of the absorbent article 1. In the rear side region S3 of the absorbent article 1, a base point of deformation extending in the width direction W is formed. Since the absorbent core 31 of the rear side region S3 can deform the third low basis weight portion 43 as a base point, the absorbent article 1 can be easily bonded to the arc along the longitudinal direction L of the body. In particular, the edge of the rear side of the third low basis weight portion 43 has a shape that is inclined forward from the inner side in the width direction W toward the outer side, and therefore is easily disposed along the arc of the buttocks of the user.

The outer edge of the third low basis weight portion 43 in the width direction W is located on the inner side of the outer edge of the absorbent core 31 in the rear side region S3. Third low The basis weight portion 43 may be provided in plural in the front-rear direction L with an interval therebetween. The third low basis weight portion 43 is a curved portion constituting the present embodiment. The third low basis weight portion 43 is configured such that the absorbent article 1 can be bent in the thickness direction T. The "curved portion" may extend in the width direction W, and may be parallel to the width direction and may be inclined in the width direction W. The "curved portion" may be a configuration of a deformation base point of the absorbent core 31, and may be constituted by a low basis weight portion, and may be a press portion in which the absorbent core 31 is compressed in the thickness direction T.

The absorbent core 31 has a high basis weight portion 45 located outward in the width direction of the second low basis weight portion 42 in the rear side region S3. The basis weight of the absorbing material of the high basis weight portion 45 is lower than the basis weight of the absorbing material of the absorbent core 31 around it. The high basis weight portion 45 is a portion other than the second low basis weight portion 42 and the third low basis weight portion among the absorbent cores 31 of the rear side region S3. The second low basis weight portion 42, the third low basis weight portion 43, and the high basis weight portion 45 are covered by the surface sheet 11.

The absorbent core 31 may have a substantially constant density. The density of the absorbent core 31 is in a constant state, and the absorbent core 31 is not partially pressed after the absorbent material is laminated. Further, the absorbent core 31 has a plurality of domains having different basis weights. Specifically, the basis weight of the middle-high portion 33 and the basis weight of the region outside the strand lower region S1 in the width direction than the middle-low portion 33, and the basis weight of the high basis weight portion 45 of the rear side region S3, and the rear side domain S3 The basis weights of the low basis weights (the second low basis weight portion 42 and the third low basis weight portion 43) are different. More specifically, the basis weight of the absorbing material constituting the absorbent core 31 is the collar of the middle-high portion 33 and the outer side of the lower-lower portion S1 than the middle-high portion 33. The domain, the high basis weight portion 45 of the rear side domain S3, and the low basis weight portion of the rear side domain S3 are configured to have a reduced order.

(3) Press section

The absorbent article 1 has a press portion formed by at least compressing the absorbent core 31 in the thickness direction T. The press portion may include a front side press portion 81, a length press portion 82, and a pair of rear side press portions 84.

The front side press portion 81 is provided at least in the sub-sag region S1. The front side press portion 81 may extend from the lower femoral region S1 toward the front side region S2. The front side press portion 81 can be formed by compressing the surface sheet 11 and the absorbent core 31 and the core wrap 32 in the thickness direction T. The front side press portion 81 has a section along the front-rear direction L provided on both sides in the width direction W of the middle-high portion 33. The front side press portion 81 can define a side edge in the width direction W of the middle and high portion 33.

The length press portion 82 is disposed on both sides of the center line CL, more specifically, the second low basis weight portion 42 in the rear side region S3. The length press portion 82 may be formed by compressing the absorber 30 and the surface sheet 11 in the thickness direction T. The length press portion 82 may be provided at least on the absorbent core 31 and the surface sheet 11. The length press portion 82 extends in the front-rear direction L on both outer sides in the width direction W of the second low basis weight portion 42. The length press portion 82 may have a linear shape or a broken line shape and may extend at least in the front-rear direction L. The length press portion 82 may extend linearly in parallel with the front-rear direction L, and may be inclined and curved in the front-rear direction L. The length press portion 82 is formed to be larger than the hip pad 4 The position of the amplitude P1 is also possible on the front side.

In the rear side region S3, if the side portion of the absorbent core 31, that is, the high basis weight portion 45 is pressed by the left and right buttocks, the center of the width direction W of the absorber in the rear side region S3 is the second low base. The weight 42 is raised as a vertex toward the user side. The length press portion 82 is disposed on both sides in the width direction W of the second low basis weight portion 42 and serves as a base point for deformation when the second low basis weight portion 42 is raised toward the user side. By having the length press portion 82, it is easy to maintain the convex deformation of the second low basis weight portion 42, and the absorber 30 can be easily attached to the gap between the buttocks of the user.

The front side press portion 81 and the length press portion 82 can be divided in the front-rear direction L. By breaking the front side press section 81 and the length press section 82, it is possible to suppress the force from propagating to the lower femoral region S1 and the posterior side region S3. Therefore, by independently deforming the sub-femoral region S1 and the posterior region S3, both the lower femoral region S1 and the posterior region S3 can be fitted to the shape of the body. Moreover, in the modification, the front side press part 81 and the length press part 82 may be continuously connected.

The pair of rear side press portions 84 are provided in the rear side region S3 with the center line CL held on both sides. The rear side press portion 84 may be formed by compressing the absorber 30 and the surface sheet 11 in the thickness direction T. The rear side press portion 84 may be provided at least on the absorbent core 31 and the surface sheet 11. The pair of rear side press portions 84 are provided to be separated from each other by the center line CL passing through the center of the width direction W of the absorbent article 1. A pair of rear side press portions 84 are located at a position P1 that is greater than the maximum amplitude of the hip fins 4 The back side is also available.

Preferably, the pair of rear side press portions 84 are located near the end of the rear side of the rear side region S3. Specifically, the pair of rear side press portions 84 are located near the field of the celestial bone facing the user. The rear side press portion 84 may extend in a line shape or a dotted line along the front-rear direction L. Further, even if the front-rear direction L is slightly inclined or curved, the rear side press portion 84 can be regarded as extending in the front-rear direction L. Specifically, the pair of rear side press portions 84 may extend partially or entirely in the front-rear direction L. The pair of rear side press portions 84 are sections having a wide width that increases in the width direction W toward the rear side. That is, the rear side press portion 84 is inclined toward the outer side in the width direction W as it goes toward the rear side.

The pair of rear side press portions 84 are located further rearward than the position P1 of the maximum width of the hip fins 4 in the width direction W, and the pair of rear side press portions 84 have the width direction W toward the rear side. The wide range of the widened distance. The maximum amplitude of the hip fins 4 in the width direction W is located further rearward than the center of the rear side field S3 in the front-rear direction L.

A wide area that is held by a wide section is equivalent to the vicinity of the user's fairy bone. In this field, the press section does not exist, and on both sides of the field, a pair of rear side press sections 84 having a higher rigidity exist. Thus, the wide area is maintained on a relatively flat surface. Since the relatively flat surface touches the skin near the fairy bone, the effect on the user's skin can be alleviated. Further, since the wide area is maintained on a relatively flat surface, the convex deformation caused by the second low basis weight portion 42 located on the front side of the wide area can be flat (planar).

The pair of rear side press portions 84 are disposed such that the opposing faces are spaced apart from each other in the vicinity of the sacrum and the portions of the opposing faces of the buttocks. Since the buttocks are relatively vigorously moved, the portions of the buttocks of the absorbent article 1 are also easily operated in response to the user's motion. The movement of the absorbent article 1 is caused by the pair of rear side press portions 84 having a high rigidity, and is difficult to convey to the field of the sacrum, that is, the wide-width field. As a result, it is possible to maintain a relatively flat surface in a wide area, and it is possible to reduce the influence on the skin of the user. Moreover, it is preferable that there is no press portion having a high rigidity in a wide area. Thereby, the influence on the skin of the user can be more moderated.

Further, the pair of length press portions 82 are disposed apart from the pair of rear side press portions 84. Thereby, the operation of the absorbent core 31 behind the rear side region S3 can be suppressed, and the operation of the absorbent core 31 in front of the rear side region S3 can be followed. In particular, the absorbent core 31 in front of the rear side region S3 is relatively large in operation in response to the movement of the buttocks of the user. Even in this case, since the pair of length press sections 82 and the pair of rear side press sections 84 are also separated from each other, the operation of the absorbent core 31 at the rear of the rear side region S3 is alleviated. Therefore, since the action of the absorbent core 31 in the wide width region is alleviated, the stimulation near the user's fairy bone can be reduced.

The pair of length press sections 82 are disposed apart from the pair of rear side press sections 84. The distance between the pair of length press sections 82 and the pair of rear side press sections 84 is preferably at least 3 cm, more preferably at least 5 cm. The length of the front end of the general female is 1.5 to 2.5 cm. By the length of the front end side longer than the first joint, when the finger is touched and touched When the finger moves slightly, the finger does not touch the press portion, and the user can feel the surface of the absorbent article 1 softly. The section between the pair of length press sections 82 and the pair of rear side press sections 84 where the press section is not formed constitutes a non-pressing field 52 which will be described later. The section in which the press section is not formed may be the position P1 that spans the maximum extent of the hip fins 4.

The absorbent article 1 has the first press portion 85 and the second press portion 87 which are formed by pressing at least two of the sheets constituting the skin surface sheet 10 and the non-skin surface sheet 20 in the thickness direction T. The third press portion 86 may be referred to (refer to Fig. 1). The first press portion 85, the second press portion 87, and the third press portion 86 may be formed along the outer edge of the hip piece 4.

(4) Bonding part

As shown in Fig. 2, the absorbent article 1 is provided with an adhesive portion 60 having an adhesive for fixing the absorbent article 1 to the underwear. The adhesive portion 60 is configured such that the absorbent article 1 is detachably engaged with the underwear, and constitutes an engaging portion. Further, the engaging portion is not limited to the adhesive portion, and may be, for example, a hook member. The bonding portion 60 has a first body bonding portion 61, a second body bonding portion 62, a blade bonding portion 63, and a hip blade bonding portion 64. These adhesive portions 61 to 64 are provided on the non-skin opposing surface side T2 of the non-skin surface sheet 20. The adhesive portions 61 to 64 may be covered by a release sheet in a state before use. The release sheet is used to prevent deterioration of the adhesive of the adhesive portions 61 to 64 before use. The release sheet is removed by the user when in use.

The first body bonding portion 61 is disposed further forward than the second body bonding portion 62. The first body bonding portion 61 and the second body bonding portion 62 extend in the front-rear direction L. The first body bonding portion 61 is disposed apart from the second body bonding portion 62 in the front-rear direction L. The first main body bonding portion 61 can be disposed across the lower femoral region S1 and the front side domain S2 on the front side of the first low basis weight portion 41. The second main body bonding portion 62 is disposed on the rear side field S3 on the rear side of the first low basis weight portion 41. It is preferable that the first body bonding portion 61 and the second body bonding portion 62 are not provided on the center line CL. The flap bonding portion 63 is provided on the flap 3. The hip flap attachment portion 64 is provided on the hip flap 4. The first low basis weight portion 41 is preferably disposed in the thickness direction T so as not to overlap the adhesive portions 61 to 64. More specifically, the first low basis weight portion 41 is provided between the first body bonding portion 61 and the second body bonding portion 62.

The second low basis weight portion 42 is preferably disposed in the thickness direction T so as not to overlap the adhesive portions 61 to 64. More specifically, the second low basis weight portion 42 is provided between the plurality of second body bonding portions 62. It is preferable that the pair of length press portions 82 are provided so as to overlap the second body bonding portion 62.

(5) Detailed composition of the surface sheet

Next, the surface sheet 11 will be described in detail based on Fig. 4 . Fig. 4 is a schematic cross-sectional view of the surface sheet 11. The surface sheet 11 has a first layer 111 and a second layer 112. In addition, in the first figure, although the surface sheet 11 is shown by one layer, in detail, the surface sheet 11 is as shown in FIG. The figure is composed of two layers. The first layer 111 is a skin-facing surface constituting the absorbent article 1. The second layer 112 is disposed on the non-skin opposing surface side T2 of the first layer 111. The first layer 111 and the second layer 112 are non-woven fabrics. The diameter of the fibers constituting the second layer 112 is thicker than the diameter of the fibers constituting the first layer 111. Specifically, the diameter of the fibers of the first layer 111 is 1.3 dtex, and the diameter of the fibers of the second layer 112 is 2.2 dtex. Preferably, the diameter of the fibers of the first layer 111 is preferably 0.5 dtex or more and less than 2.0 dtex. When the diameter of the fiber of the first layer 111 is 0.5 dtex or more, the nonwoven fabric can be stably produced using the fiber. In addition, when the diameter of the fiber of the first layer 111 is less than 2.0 dtex, the user feels softness when touched by a finger, and the best evaluation can be obtained in the examples described later.

The basis weight of the fibers of the second layer may be higher than the basis weight of the fibers of the first layer. Specifically, the basis weight of the fibers of the first layer 111 is 7 g/m ² , and the diameter of the fibers of the second layer 112 is 18 g/m ² . The surface sheet 11 may be formed by integrating the first layer 111 and the second layer 112, and the first layer 111 and the second layer 112 may be formed in an integrated state.

(6) Pressing and non-pressing areas

Next, the press field 51 and the non-pressing field 52 will be described. Fig. 5 is a view showing a pressing region 51 and a non-pressing region 52 in a plan view of the absorbent article 1 shown in Fig. 1. In Fig. 5, different oblique lines are shown in the press field 51 and the non-pressing field 52. The rear side domain S3 has a press section 51 in which a press section is disposed, and a non-press section Squeeze field 52. The press portion disposed in the press region 51 is a press portion that compresses the absorbent core 31 and the surface sheet 11, that is, a press portion provided in the absorbent core 31 and the surface sheet 11, and in the present embodiment, is a length press portion. 82 and the rear side press portion 84.

The press area 51 is a field in which at least one of the length press portion 82 and the rear side press portion 84 is disposed. More specifically, the press field 51 includes a field in which the length press portion 82 is disposed, and a region in which the field portion in which the length press portion 82 is disposed extends in the width direction W. Further, the press area 51 includes a field in which the rear side press portion 84 is disposed, and a field in which the field in which the rear side press portion 84 is disposed extends in the width direction W.

The non-pressing field 52 is a field in which the press portion (the length press portion 82 and the rear side press portion 84 in the present embodiment) provided in the absorbent core 31 and the surface sheet 11 is not disposed. The non-pressing field 52 continuously extends from one end to the other end of the absorber 30 along the width direction W. Further, the non-pressing field 52 is a concept including a field in which only the press portion is formed in the surface sheet 11, and a field in which only the press portion is formed in the side sheet 12 and only in the field in which the press portion is formed in the absorbent core 31. In the rear side domain S3, the press area 51, the non-pressing area 52, and the press area 51 are alternately arranged from the front.

A part of the absorbent core 31 provided in the rear side domain S3 is disposed in the non-pressing field 52. Further, a part of the second low basis weight portion 42 is preferably extended in the non-pressing field 52. It is more preferable that the second low basis weight portion 42 penetrates the non-pressing field 52 in the front-rear direction L.

The non-pressing field 52 may overlap with at least one of the low basis weights and at least one of the high basis weights 45. The non-pressing field 52 of the present embodiment overlaps the high basis weight portion 45, the second low basis weight portion 42, and the third low basis weight portion 43. In the non-pressing field 52, the third low basis weight portion 43 and the high basis weight portion 45 are alternately arranged in the front-rear direction L. Further, in the non-pressing field 52, the second low basis weight portion 42 and the high basis weight portion 45 are alternately arranged in the width direction W. Therefore, when the user searches for the non-pressing area 52 in the front-rear direction L, the skin-facing surface side T1 and the high-heavy weight portion 45 of the third low basis weight portion 43 are traced to the skin facing surface side T1. In addition, when the user searches for the non-pressing area 52 in the width direction W, the skin facing surface side T1 of the second low basis weight portion 42 and the skin facing surface side T1 of the high basis weight portion 45 are traced. Therefore, the user can easily feel the bulging of the absorbent core 31 by the change in the basis weight of the absorbent core 31 by tracing the skin-facing side T1 of the non-pressing area 52.

At least a part of the non-pressing field 52 may be disposed in the rear end region 53 extending from the rear end edge of the absorbent article 1 toward the front side. The length of the front-rear direction L of the rear end region 53 is a length of 25% with respect to the entire length along the front-rear direction L of the absorbent article 1. Further, at least a part of the non-pressing field 52 may be disposed in the rear end field 53, and the non-pressing field 52 may extend further forward than the rear side field. Further, the non-pressing field 52 may be disposed on a broken line extending from the position P1 of the maximum width of the hip piece 4 toward the width direction W. Further, at least a part of the non-pressing area 52 may be disposed on a broken line.

The length of the front-back direction L of the non-pressing field 52 is 30mm or more is also available. By forming 30 mm or more, the length of the finger of the general user (adult) is longer than the length of the first joint (15 mm to 25 mm). Therefore, when pressed by the finger pad, the impression portion can be felt without touching the press portion. Further, when the finger of the user (adult) is formed to be twice as long as the length of the distal end side of the first joint, the finger is traced, or when the finger is touched by the plural finger, the press portion is not touched to become soft. impression.

The length of the front-back direction L of the non-pressing area 52 may be shorter than the length of the front-back direction L of the rear side field S3. The non-pressing field 52 is preferably a rear end edge of the bonding portion 60 that straddles the rear side domain S3 in the front-rear direction L. The user abuts the field in which the adhesive portion 60 is placed and the underwear at the time of installation, and fixes the absorbent article 1 to the underwear. Specifically, for example, after the lower femoral region S1 of the absorbent article 1 is pressed by the finger, the finger is moved rearward until the rear end edge of the adhesive portion 60 is continuously pressed by the hand. The non-pressing field 52 is a rear end edge of the bonding portion 60 that straddles the rear side domain S3 in the front-rear direction L. When the user performs the abutting action by the finger, the finger is in contact with the relatively soft non-pressing field 52. Therefore, the user can have an impression that the absorbent article 1 is soft before wearing, and the feeling of expectation can be improved.

At least a part of the non-pressing field 52 may be disposed in a rear end region extending from the rear end edge of the absorbent article 1 toward the front side. The applicant investigated the result of the installation of the user and found that the user pressed the absorbent article by the finger from the time of installation to the vicinity of the rear end edge of the absorbent article (the rear end field). The backend area completes the installation action. Further, the applicant investigated the result of the installation of the user and found that the vicinity of the rear end edge of the absorbent article extends from the rear end edge of the absorbent article toward the front side with respect to the absorbent article. A range of 25% of the overall length of the front-rear direction L.

Since at least a portion of the non-pressing field 52 is provided in the field of the back end, the user can feel softness when the user is installed. The user wears the absorbent article 1 in a state where the user feels softness before installation and can obtain a sense of expectation.

The press area 51 may be disposed on the rear side of the position P1 which is larger than the maximum width of the hip piece 4 in the width direction W. A rear side press portion 84 is provided in the press field 51 on the rear side of the position P1 of the maximum amplitude of the hip piece 4 .

(7) Installation operation of absorbent articles

Next, an example of the installation operation of the absorbent article 1 will be described with reference to Fig. 6 . Fig. 6 is a perspective view showing the absorbent article 1 in use. When the absorbent article 1 is attached to an undergarment or the like, generally, the user fixes the lower femoral region S1 disposed under the strand of the user to the underwear, and thereafter, the rear side region S3 is fixed to the underwear. More specifically, the user abuts the first body attaching portion 61 with the crotch region of the underwear, and the second body attaching portion 62 abuts against the underwear at the rear of the crotch region. Next, the user folds the flap 3 toward the non-skin opposing side T2 of the underwear, and the flap bonding portion 63 abuts against the non-skin opposing surface of the crotch region of the underwear. Moreover, the user touches the hip flap attachment portion 64 with the underwear at the rear of the crotch region. Pick up.

When the user operates the connection, the hand touches the skin surface sheet 10, for example, the skin-facing surface of the absorbent article 1 is traced by a finger, and the absorbent article 1 is pressed against the underwear and fixed by the adhesive portion 60. For example, the user presses the skin-surface sheet 10 (part A of FIG. 6) of the sub-sown area S1 with a finger, and then traces the skin-surface sheet 10 by the finger and moves the finger toward the back (Fig. 6) In the arrow X), the skin surface sheet 10 (part B of Fig. 6) of the rear side field S3 is pressed by a finger. Further, the user presses the absorbent article 1 against the underwear in a portion including the tip end of the finger to the first joint in order to reliably press the absorbent article 1 against the underwear. With this arrangement, the absorbent article 1 is fixed to the underwear.

(8) Function and effect

When the user installs the absorbent article, the absorbent article is held by the finger, and the skin surface sheet is traced by the finger, and the absorbent article is brought into contact with the underwear side. At this time, if the finger is constantly touching the press section, the user often feels the hardness of the press section, and it is difficult to give a soft impression to the absorbent article.

In the rear side domain S3 of the absorbent article 1 of the present embodiment, since the non-pressing field 52 is provided, the user slides the finger from the front side (the lower femoral domain side, the A portion of Fig. 6) along the rear side. (arrow X in Fig. 6), in contact with the non-pressing field 52 (part B of Fig. 6). When the user traces the surface of the absorbent article 1 by a finger, At least for a certain period of time, the hardness of the press section cannot be felt and the softness is felt. Therefore, the user can grasp the softness of the absorbent article 1 before installation, and can obtain a sense of expectation of the comfort of the absorbent article 1.

According to an embodiment, the diameter of the fibers of the first layer 111 in contact with the user's hand is relatively small. Since the muscle touch of the first layer 111 is good, the user can feel softness when touched by the hand. Further, when the user wants to press and fix the absorbent article 1 to the underwear or the like, it is easy to obtain the repulsive force by the second layer 112 composed of relatively thick fibers. Therefore, if the user traces the surface sheet 11 by the finger, the skin of the surface sheet 11 is pressed back toward the finger side by the repulsive force of the second layer 112, and the user can easily contact the surface sheet by the finger. 11 skin is opposite to the skin. Since the user continuously contacts the soft first layer 111, the softness of the surface sheet 11 can be continuously felt.

Further, the non-woven fabric constituting the core wrap 32 covering the absorbent core 31 has a higher elongation than the cotton paper. Therefore, when the user slides the finger touched by the absorbent article 1 or presses with a finger, the core wrap 32, that is, the non-woven fabric, is stretched, and the user can obtain the opposite side of the skin of the absorbent article 1 to follow. Hand-like touch. More specifically, when the first layer 111 of the surface sheet 11 is traced by a finger, the finger moves on the skin-facing surface of the first layer 111. At this time, since the surface of the finger wrap 32 is high in the surface of the finger contact, the core wrap 32 of the root extends from the action of the finger. Therefore, when the first layer 111 of the surface sheet 11 is traced by a finger, the operation of following the finger causes the first layer 111 to be stretched, and the finger does not stand. That is, the tactile sensation away from the first layer 111 and the fibers of the first layer 111 are the tactile sensations of grasping the fingers and slowly moving the fibers away from the fingers. Therefore, the user does not feel softness from a point shape, but can feel continuously from a flat surface.

When the user compares the skin-facing surface of the absorbent article 1 with a finger, the softness of the press portion cannot be felt for at least a certain period of time. The user can grasp the softness of the absorbent article 1 before installation, and can obtain a feeling of expectation for the comfort of the absorbent article 1. Moreover, in general, when the feeling of the finger and the feeling of the buttock are compared, the feeling of the finger is sharper. Therefore, the feeling that the finger feels soft is that it is easy to leave a strong impression in the brain. Therefore, the user feels soft by the fingers, and it is easy to maintain a soft impression during installation.

Further, depending on the user, when using a sanitary napkin or a light incontinence pad for night use, it is particularly desirable to secure the rear side region S3 to the underwear. When the rear side region S3 of the absorbent article 1 is not fixed to the absorbent article 1, when the underwear is pulled up after installation, the absorbent article 1 is curled to cause the absorbent article 1 to be displaced, or the absorbent article 1 is curled. The adhesive portions are bonded to each other. Therefore, the user wants to press the back side field S3 of the absorbent article 1 by the finger and fix it to the underwear. Since the non-pressing field 52 is provided in the rear side region T3 of the absorbent article 1, the user can grasp the softness of the absorbent article 1 when the user wants to securely fix the rear side region S3.

Further, at least a part of the non-pressing region 52 is preferably overlapped with the second body bonding portion 62 of the rear side region S3. When the user securely fixes the rear side region S3 to the underwear, the user intends to bring the second body bonding portion 62 of the rear side region S3 into contact with the underwear. Therefore, by the second body bonding portion 62 and the non-pressure When the pressing area 52 overlaps and the user wants to fix the rear side field S3 through the second main body bonding portion 62, the finger easily touches the non-pressing field 52. The user can grasp the softness of the absorbent article 1 during the mounting operation, and can improve the expectation of the absorbent article 1.

The non-pressing field 52 may be disposed to overlap the low basis weight portion and the high basis weight portion 45. When the user traces the skin of the non-pressing area 52, the skin of the high basis weight portion 45 and the low basis weight portion can be traced to the side T1 of the skin, and the bulging of the absorbent core 31 can be easily felt by the change in the basis weight. .

The third low basis weight portion 43 having a low basis weight portion may be disposed in plural in the front-rear direction L with an interval therebetween. The user can track the third low basis weight portion by moving the finger in the front-rear direction during installation. The user is in contact with the low basis weight portion and the high basis weight portion 45 during the mounting operation, and the bulging of the absorbent core 31 is easily felt by the unevenness.

The second low basis weight portion 42 as the front and rear low basis weight portions may be disposed to overlap the non-pressing field 52. The second low basis weight portion 42 is a guide that extends in the front-rear direction L, and the user easily slides the hand pressing the lower femoral region S1 rearward along the second low basis weight portion 42. When the user moves rearward along the second low basis weight portion 42, the non-pressing region 52 is touched, and the softness of the absorbent article 1 can be felt.

The non-pressing field 52 may be disposed on a broken line extending from the position P1 of the maximum width of the hip piece 4 toward the width direction W. The user is to prevent the deflection of the hip fins 4, while the rear side domain S3 will be the most The position P1 of the maximum amplitude of the bulged hip flap 4 is surely fixed. Therefore, the user presses the position P1 of the maximum amplitude of the hip flap 4 by the finger and the broken line extending from the position P1 of the maximum amplitude toward the width direction W. Since the non-pressing area 52 is disposed on a broken line extending from the position P1 of the maximum width of the hip piece 4 toward the width direction W, the user can easily touch the non-pressing area 52, and the user can feel softness.

The press area 51 may be disposed on the rear side of the position P1 which is larger than the maximum width of the hip piece 4 in the width direction W. The user feels the softness of the absorbent article by the non-pressing field 52 on the broken line extending from the position P1 of the maximum width of the hip piece 4 toward the width direction 4. Further, the user can feel the change in the hardness of the absorbent article 1 by touching the press portion by moving the finger rearward than the non-pressing region 52. The user can grasp the position of the rear end edge of the absorbent article 1 by the change in the hardness of the skin facing surface of the absorbent article 1. Therefore, the user can obtain an expectation of the feeling of attachment of the absorbent article 1, and can obtain a sense of security that is surely fixed to the underwear until the rear end edge of the absorbent article 1.

The diameter of the fibers constituting the first layer may be less than 2.0 dtex. As a result of repeated research, the applicant found that when the user touches a non-woven fabric composed of fibers of less than 2.0 dtex by a finger, the touch of the non-woven fabric following the finger can be obtained. The diameter of the fibers constituting the first layer is less than 2.0 dtex, and the user can more easily feel the softness of the surface sheet 11.

The outer edge 321E of the first core wrap 321 is matched It may be placed on the outer side of the non-skin facing surface T2 of the absorbent core 31 or the outer side edge of the absorbent core 31 in the width direction. In other words, the outer edge 321E of the first core wrapping 321 may not be disposed on the skin facing surface side T1 of the absorbent core 31. A step caused by the outer edge of the core wrap 32 is not formed on the skin-facing surface of the absorbent article 1, and the skin-facing surface of the absorbent article 1 is easily maintained in a smooth state. The user does not easily feel the step difference caused by the presence or absence of the core wrap 32 when contacting the surface sheet 11, and it is easy to obtain a print that is smooth and gentle to the skin.

The absorbent core 31 is not partially compressed, and the density of the absorbent material may be constant. Since the hardened portion by compression is not provided in the absorbent core 31, the entire area in which the absorbent core 31 is disposed is soft. The user easily feels the softness of the absorbent core 31, and it is easy to obtain a feeling of expectation for the feeling of mounting.

The absorbent core 31 is a plurality of fields having different basis weights, and the fields having different basis weights may be configured to change the basis weight in stages. In the plural field, since the basis weight changes stepwise, a plurality of irregularities are formed on the skin-facing surface of the absorbent article 1. The user easily feels bulging by the unevenness of the absorbent core 31 when tracing by a finger. Further, the absorbent core 31 is easily deformed based on the boundary at which the basis weight changes, and is easily deformed softly by the action of the body during installation. Therefore, since the absorbent core 31 can follow the movement of the body, the feeling of mounting is improved.

(9) Comparative evaluation

Next, in order to confirm the non-woven property of the surface sheet of the present invention The experiment of comparative evaluation of the nonwoven fabric (Example) of the present invention and the nonwoven fabric (comparative example) which does not have the structure of this invention was carried out. The comparatively evaluated experiment was conducted to evaluate the surface roughness of the non-woven fabric and the surface characteristics of the non-woven fabric in order to evaluate the rough feeling of the non-woven fabric in the examples and the comparative examples, and to investigate and compare the thickness direction of the non-woven fabric in order to evaluate the hard feeling of the non-woven fabric. Compression characteristics. The non-woven fabric of the examples and the nonwoven fabric of the comparative example have different fiber diameters. In the nonwoven fabric of the example, the fiber diameter of the first layer is finer than that of the second layer. In the non-woven fabric of the comparative example, the fiber diameter of the first layer was thicker than that of the second layer.

For the surface characteristics test, an automated surface testing machine KES-FB4 AUTO-A manufactured by Addo Technology Co., Ltd. was used, which was wound in a range of 100 mm × 100 mm of each sample by a piano wire of 0.5 mm diameter. The 10 mm × 10 mm terminal was applied with a load of 25 g, and the surface characteristics were measured by sliding at a speed of 1.0 mm/sec. From the measurement results, the average friction coefficient MIU, the standard deviation MMD, and the average deviation SMD [μm] of the surface roughness were obtained. The results of the comparative evaluation are shown in Table 1. MMD is an indicator of the roughness of the surface, and the larger the value, the coarser the value. SMD is an indicator of the thickness of the surface, and the larger the value, the more uneven.

Since the value of MMD is smaller than that of the comparative example, it means that the roughness of the surface is excellent. And the value of SMD is the ratio of the embodiment The comparative example is much smaller, so the unevenness of the surface of the non-woven fabric is small. Therefore the surface is not rough. By having no unevenness, it is easy to continuously contact the finger from the face, and by not being rough, the surface can be smoothly felt.

This measurement is the result of evaluation of the length direction of the product. From the above results, since the fiber diameter of the first layer is fine, it is not rough and is not coarse. That is, it can be said that the surface is smooth. Therefore, in the process of fixing the surface touch, since the article is fixed by the finger in the longitudinal direction (MD direction), it can be confirmed that the surface is smoothly finished.

Next, a comparative evaluation of the contact feeling at the time of mounting the absorbent article and the deflection and comfort during use will be described. Table 2 shows the results of comparative evaluation. In the comparative evaluation test, the absorbent articles of Examples 1 and 2 and the absorbent articles of Comparative Examples 1 to 5 were evaluated: contact feeling during installation, deflection during use, and use in use. The comfort of the surface. In the absorbent articles of Examples 1 and 2 and the absorbent articles of Comparative Examples 1 to 4, the fibers of the first layer and the second layer constituting the surface sheet have different diameters, and the other configurations are the same. The difference in the constitution of the examples and the comparative examples is shown in Table 2. In the absorbent article of Example 1 and Example 2 and the absorbent article of Comparative Example 5, the diameters of the fibers constituting the shape of the absorbent core and the first layer and the second layer of the surface sheet are different, and the other configurations are the same. . In the absorbent article of Comparative Example 5, the low basis weight portion and the high basis weight portion were not provided in the rear side region, and the basis weight of the rear side region was constant.

The comparatively evaluated test was carried out by 100 women using sanitary napkins. In the evaluation test, the implementer touched the sample to be the subject, and used one night, and asked the following questions.

Question 1 "Is the muscle touch soft compared to the usual sanitary napkin?" In the case of the question 1, the ratio of the number of people who had a feeling that the muscle touch was good, the muscle touch was gentle, and the fluffy feeling was good was 70% or more, and the sensory evaluation was good, and the evaluation was ○. In addition, in the case where the ratio of the number of the people who answered the question 1 to "the muscle feels good, the muscle touch is gentle, and the fluffy feels good" is less than 70%, the sensory evaluation is poor, and the evaluation is ×.

Question 2 "Whether there is no deflection in the installation (no type of collapse) compared to the sanitary napkin used in normal times." For the question 2, the ratio of the number of people who had "no flex" or "safe use" was 70% or more, and the sensory evaluation was good, and the evaluation was ○. Moreover, the ratio of the number of people who answered "no deflection" or "safe use" to question 2 was less than 70%, and the sensory evaluation was poor, and the evaluation was ×.

Question 3 "Whether the comfort in the installation feels good compared to the sanitary napkins used in normal times." For the question 3, the ratio of the number of people who had "good feeling of use" or "fit and feel good" was 70% or more, and the sensory evaluation was good, and the evaluation was ○. In addition, the ratio of the number of people who answered "the feeling of use is good" or "fit and feels good" to question 3 is less than 70% of the samples, and the sensory evaluation is poor, and the evaluation is ×.

From the evaluation results, it was found that the fiber diameter of the first layer was 2.0 dtex or less, and the fiber diameter of the second layer was preferably thicker than the fiber diameter of the first layer. More specifically, it is found that the fiber diameter of the first layer is 2.0 dtex or less, and the fiber diameter of the second layer is thicker than the fiber diameter of the first layer, whereby the contact feeling during installation and the comfort in use can be obtained. feel. Further, according to the shape of the absorbent body 30 of the present invention, no deflection was observed during use.

Hereinabove, the present invention has been described in detail using the above-described embodiments, but the present invention is obviously not limited to the embodiments described in the specification. The invention is intended to be modified and modified without departing from the spirit and scope of the invention. Therefore, the description of the present specification is for illustrative purposes only and is not intended to limit the invention.

[Industrial availability]

An absorbent article can be provided, and the user can grasp the softness of the absorbent article before installation, and the user can obtain a sense of expectation for the comfort of the absorbent article.

1‧‧‧Absorbables

3‧‧‧ wing

4‧‧‧Opacity flaps

4E‧‧‧ outer edge

4F‧‧‧ convex

10‧‧‧Skin sheet

11‧‧‧Surface

12‧‧‧ side flakes

30‧‧‧Acceptor

33‧‧‧High and Medium Department

41‧‧‧1st low basis weight

42‧‧‧2nd low basis weight

43‧‧‧3rd low basis weight

45‧‧‧High base

81‧‧‧Front side press section

82‧‧‧Long press section

84‧‧‧Back side press section

85‧‧‧1st press section

86‧‧‧3rd press section

87‧‧‧2nd press section

L‧‧‧ direction

W‧‧‧Width direction

S1‧‧‧Sub-domain

S2‧‧‧ front side domain

S3‧‧‧ Back side domain

CL‧‧‧ center line

P1‧‧‧Maximum position

Claims (9)

An absorbent article comprising: a front-rear direction and a width direction perpendicularly intersecting each other, a sub-back field disposed under a strand of a user, a rear side field located at a rear side of the lower strand field, and a lower side field disposed in the strand The absorber in the rear side region, the surface sheet disposed on the skin facing surface side of the absorber, and the engaging portion that is detachably engaged with the underwear, the absorber having an absorbent core provided with an absorbent material And a core wrap comprising a non-woven fabric covering the absorbent core, the surface sheet having a first layer composed of a non-woven fabric and being disposed on a side opposite to the skin surface of the first layer a second layer comprising a non-woven fabric having a fiber having a diameter larger than that of the first layer, wherein the rear side region has a press region in which a press portion is disposed, and a non-pressing region in which the press portion is not disposed, and the press The portion is provided in the absorbent core and the surface sheet, and the non-pressing region continuously extends from one end to the other end of the absorber along the width direction. The absorbent article according to claim 1, wherein the absorbent core of the rear side region has a low basis weight portion and a high basis weight portion having a basis weight higher than the low basis weight portion, and the non- The pressing field overlaps with the aforementioned low basis weight portion and the aforementioned high basis weight portion. Such as the absorbent article of claim 2, wherein The low basis weight portion has a low-basis weight portion extending in the width direction, and the low-width base portion is disposed at a plurality of intervals in the front-rear direction. The absorbent article according to claim 2, wherein the low basis weight portion has a front and rear low basis weight portion extending in the front-rear direction, and the front and rear low basis weight portion is in the non-pressing field. Configured in an overlapping manner. The absorbent article according to any one of claims 1 to 3, wherein the length of the non-pressing field in the front-rear direction is 30 mm or more. The absorbent article according to any one of claims 1 to 3, wherein in the rear side field, the hip flap has an outer side extending in the width direction from the outer edge of the absorbent core of the lower strand field. The non-pressing field is disposed on a broken line extending from the position of the maximum width of the hip piece in the width direction. The absorbent article according to claim 6, wherein the position of the maximum width of the hip piece in the width direction is located further rearward than the center of the rear side of the front-rear direction, and the pressing area Is arranged in the aforementioned width direction The maximum amplitude position of the hip flap is further to the back side. The absorbent article according to any one of claims 1 to 3, wherein the diameter of the fibers constituting the first layer is less than 2.0 dtex. The absorbent article according to any one of claims 1 to 3, wherein the center of the core wrap in the width direction is disposed on the skin-facing side of the absorbent core, and the core wrap is unfolded. The outer edge of the core wrap in the state is disposed on the outer side of the skin opposite to the absorbent core or on the outer side in the width direction of the outer edge of the absorbent core.