TW201729770A - Absorbent article - Google Patents

Abstract

Provided is an absorbent article that can continue to be closely fitted to the body even during movement by a wearer. The absorbent article has a first curved section (41a) and a second curved section (41b) that extend in the width direction, at the rear of an excretion orifice contact region (S1). A first region (R1) adjacent to the first curved section is provided in front of the first curved section; a second region (R2) adjacent to the second curved section is provided to the rear of the second curved section; and a first intermediate region (41) is provided positioned between the first curved section and the second curved section, in the front/rear direction (L). The basis weight of absorbent material in the first intermediate region is lower than the basis weight of absorbent material in the first and second regions. The first curved section, the second curved section, and the first intermediate region extend from a center line to beyond an intermediate point between an outside edge of the absorbent core and the center line, in the width direction. The length of the first intermediate region in the front/rear direction is 10-40 mm.

Description

Absorbent article

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

The absorbent article for night use is used by the wearer in a lying state, and is used for a long time in comparison with the daily absorbent article. Therefore, in the use of an absorbent article for night use, it is prone to post-leakage. Patent Document 1 discloses an absorbent article for night use that prevents leakage.

The absorbent article of the patent document 1 has the excretion part opposing part arrange|positioned in the liquid-excretion part of a wearer, and the rear part arrange|positioned in the back side rather than the recessed part opposing part. A plurality of high-density portions and low-density portions extending in the widthwise direction are formed in the absorber at the rear portion. In the absorbent article of Patent Document 1, when the body fluid flows backward, the body fluid is held by the high-density portion having a relatively high density, and the low-density portion having a relatively low density is softly deformed to suppress the post-leakage.

[Previous Technical Literature] [Patent Literature]

Patent Document 1 Japanese Patent Laid-Open Publication No. 2010-136900

The inventors of the present application have conducted various investigations on the deformation of the wearer's body. As a result, it was found that various external forces were applied to the absorbent article along with the movement of the wearer's body, and a part of the absorbent article was in close contact with or away from the body. Further, the inventors have found that when a part of the adhesive article that is in close contact is away from the body, the wearer particularly feels uncomfortable or unsafe feeling of leakage of body fluid.

The present invention has been made in view of the above-described problems, and an object of the invention is to provide an absorbent article which is easy to adhere to the wearer's body and has a good wearing feeling when the wearer moves.

An absorbent article according to one aspect has a front-rear direction and a wide-side direction which are orthogonal to each other; a discharge opening abutting portion which is opposite to a wearer's drain opening; and a rear side range a rear side of the ablation opening abutting region; and an absorbent body disposed at least in the ablation opening abutting range and the rear side range, having an absorbent core comprising an absorbent material, characterized by: providing: excreting in the foregoing a first curved portion extending rearward of the mouth contact range and extending in the width direction, and a second curved portion extending rearward of the first curved portion and extending in the widthwise direction, the first curved portion and the The second curved portion is configured such that the absorbent article can be bent in the thickness direction, and is provided adjacent to the first region of the first curved portion in front of the first curved portion and adjacent to the rear portion of the second curved portion. The second region of the two curved portions and the aforementioned front and rear directions are located in the foregoing In the first intermediate portion between the first curved portion and the second curved portion, the basis weight of the absorbent material in the first intermediate portion is a unit weight of the absorbent material in the first region and the second region. Further, the first curved portion, the second curved portion, and the first intermediate portion extend from the center line beyond an intermediate point of the outer edge of the absorbent core and the center line in the width direction. The length of the first intermediate portion in the front-rear direction is 10 mm or more and 40 mm or less.

1‧‧‧Absorbables

3‧‧‧Flanking

4‧‧‧ hip wing

10‧‧‧Skin sheet

20‧‧‧Non-skin sheet

30‧‧‧Acceptor

31‧‧‧Accumulate chip

32‧‧‧Rough sheet cladding material

33‧‧‧High and Medium Department

40‧‧‧1st bend guide

41‧‧‧1st intermediate zone

41a‧‧‧1st part

41b‧‧‧2nd part

42‧‧‧2nd intermediate zone

42a‧‧‧3rd song

42b‧‧‧4th

43‧‧‧2nd bend guide

61‧‧‧1st body adhesion area

62‧‧‧2nd body adhesion area

81‧‧‧Front compression department

82‧‧‧Long-side compression department

L‧‧‧ direction

W‧‧‧Broadside direction

T‧‧‧ thickness direction

S1‧‧‧Exhaust port abutment range

S2‧‧‧ front side range

S3‧‧‧ back side range

CL‧‧‧ center line

Fig. 1 is a plan view of an absorbent article of one embodiment.

Fig. 2 is a plan view of the absorbent article as viewed from the opposite side of Fig. 1.

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

Fig. 4 is a plan view of an absorbent body of one embodiment.

Fig. 5 is a perspective view of the absorbent article in use.

Fig. 6 is a schematic cross-sectional view taken along line 6A-6A of Fig. 1 of the absorbent article in use.

Fig. 7 is a schematic cross-sectional view taken along line 7A-7A of Fig. 1 of the absorbent article in use.

Figure 8 is a schematic illustration of an absorbent article in use in a standing position.

Figure 9 is a view in which the wearer's buttocks are not flattened in a lying position. Schematic diagram of an absorbent article.

Fig. 10 is a schematic view showing an absorbent article in a state in which the buttocks of the wearer are crushed in the lying posture.

Figure 11 is a schematic view showing a modified form of the absorbent article.

Fig. 12 is a schematic view showing another modification of the absorbent article.

Figure 13 is a plan view of an absorbent article of another embodiment.

(1) The overall structure of the absorbent article

The overall structure of the absorbent article 1 according to the embodiment will be described with reference to Figs. 1 to 4 . In the following description, the same or similar parts are given the same or similar symbols. In addition, the intentional expression is schematic, and the ratio of each dimension is different from the actual article. Therefore, the specific dimensions and the like should be judged with reference to the following description. Further, even if the drawings are mutually arranged, they may include portions having different dimensional relationships or ratios.

Fig. 1 is a plan view of the absorbent article, and Fig. 2 is a rear view of the absorbent article. Fig. 3 is a cross-sectional view of the absorbent article taken along line 3A-3A shown in Fig. 1. Fig. 4 is a plan view of an absorbent body provided in an absorbent article. The absorbent article 1 according to the present embodiment is a sanitary napkin for night use.

The absorbent article 1 has a front-rear direction L extending toward the front side (ventral side) and the rear side (back side) of the wearer, a widthwise direction W orthogonal to the front-rear direction L, and a skin pair toward the wearer. The thickness direction T extending to the face side T1 and the non-skin opposing face side T2.

The absorbent article 1 has a drain opening abutment range S1, a front side range S2, and a rear side range S3. The excretory opening abutment range S1 is an area relative to the excretory opening (for example, the vaginal opening) of the wearer. When the absorbent article is attached to the undergarment, the excretory opening abutment range S1 is located at the lower portion of the crotch. In summary, the excretory opening abutment range S1 is an area disposed between the wearer's armpits, in other words, between the wearer's legs.

The front side range S2 is located on the front side of the drain opening abutment range S1. The front end edge of the front side range S2 is a front end edge 91 that restricts the absorbent article 1. The rear side range S3 is located on the rear side than the drain opening abutment range S1. The rear end edge of the rear side range S3 is a rear end edge 92 that restricts the absorbent article 1. The length of the front-back direction L of the rear side range S3 may be longer than the length of the front-back direction L of the drain-port contact range S1.

The absorbent article 1 includes an absorbent body 30 having an absorbent core sheet in which an absorbent material is laminated, a skin surface sheet 10 located on the skin facing surface side T1 of the absorbent body 30, and a lower absorbent body 30. Non-skin surface sheet 20 of non-skin facing side T2. The skin surface sheet 10 has a liquid-permeable surface sheet 11 covering at least the center in the width direction of the absorber 30, and an outer edge (outer end in the width direction) of the surface sheet 11 and a wide side A side sheet 12 extending outward of the direction. The non-skin surface sheet 20 is a liquid impermeable sheet.

The surface sheet 11 is a liquid permeable sheet that allows a liquid such as a body fluid to permeate. The surface sheet 11 covers at least the surface of the absorber 30. The surface sheet 11 is not particularly limited as long as it is a sheet-like material having a structure in which a liquid is transmitted through a nonwoven fabric, a woven fabric, a perforated plastic sheet, or a mesh sheet. For the material of woven or non-woven fabric, any material of natural fiber or chemical fiber can be used.

The side sheet 12 can be selected from the same material as the surface sheet 11. However, in order to prevent menstrual blood from flowing over the side sheet 12 to the outside of the absorbent article 1, the side sheet 12 is preferably hydrophobic or water-repellent. The side sheet 12 is disposed on the outer edge of the main body portion 2, the side flaps 3, and the hip joints 4, which will be described later.

The non-skin surface sheet 20 has a length substantially the same as the length of the skin surface sheet 10. As the non-skin surface sheet 20, a laminated non-woven fabric mainly composed of a polyethylene sheet or polypropylene, a gas permeable resin film, and a sheet of a gas-permeable resin film which is bonded to a non-woven fabric such as a spunbond or a water needle nonwoven fabric may be used.

The absorber 30 has an absorbent core sheet 31 in which an absorbent material is laminated, and a core sheet covering member 32 that covers the absorbent core sheet 31. The absorbent material may, for example, be hydrophilic fibers, pulp, and SAP.

The core sheet covering member 32 may be formed by coating the absorbent core sheet 31 at least on the skin side of the absorbent core sheet 31. As a specific example, the core sheet covering member 32 may have a first covering portion disposed on the skin surface side of the absorbent core sheet 31 and a second coating portion disposed on the non-skin surface side of the absorbent core sheet 31. 2 cladding part.

The skin surface sheet 10 is a non-joining region that is not joined to the core sheet covering member 32 in a first intermediate portion 41 to be described later. This non-joining region extends continuously in the widthwise direction W. The non-joining region may extend from at least one end of the first intermediate portion 41 in the widthwise direction W to the other end.

Further, the skin surface sheet 10 may have a non-joining region that is not joined to the core sheet covering member 32 in the first bending guide portion 40 to be described later. This non-joining region continuously extends in the front-rear direction L.

The absorbent article 1 has a body portion 2, side flaps 3, and hip joints 4. The main body portion 2 is located at the center of the width direction W of the absorbent article 1 and extends in the front-rear direction L. The side flaps 3 and the hip joints 4 are portions that extend outward in the width direction W from the outer edge of the main body portion 2, and are swelled outward in the widthwise direction W in the rear side region S3. The outer edge 2E of the body portion 2 in the widthwise direction W coincides with the outer edge 30E of the absorber 30.

The main body portion 2 includes a skin surface sheet 10, a non-skin surface sheet 20, and an absorbent body 30. More specifically, the main body portion 2 includes a surface sheet 11 , a part of the side sheet 12 , a non-skin sheet 20 , and an absorber 30 .

The side sheet 12 extends from the end region of the skin surface sheet 10 in the widthwise direction W to the outside in the widthwise direction W. The inner edge of the side sheet 12 is folded outward in the front-rear direction L and in the width direction W. The elastic member 90 that expands and contracts in the front-rear direction L is disposed between the folded side sheets 12. The inner edge of the side sheet 12 is not joined to the surface sheet 11. The stretchable member 90 is joined to the side while being stretched for a predetermined length Sheet 12. Thereby, the inner edge of the side sheet 12 contracts in the front-rear direction L in a natural state. In this manner, the inner edge of the side sheet 12 and the stretchable member 90 constitute an upright leakage preventing side.

The stretchable member 90 is joined to the side sheet 12 at the end portion in the front-rear direction L. The joint portion of the stretchable member 90 and the side sheet 12 is a portion that exhibits the elastic force of the stretchable member 90. The stretchable member 90 is a non-joining portion that is not joined to the side sheet 12 at both end portions in the front-rear direction L. The non-joining portion of the stretchable member 90 is a portion where the elastic force of the stretchable member 90 cannot be expressed. In the present specification, the portion of the stretchable member 90 other than the portion where the elastic force of the stretchable member 90 cannot be expressed is referred to as the "effective long portion Le" of the stretchable member 90.

The effective long portion Le that exhibits the stretchability of the stretchable member 90 extends across the first intermediate portion 41 in the front-rear direction L and extends from the first region R1 to the second region R2. The rear side edge of the effective long portion Le of the stretchable member 90 may be disposed on the front side of the rear side edge of the hip-wing region 64 to be described later.

The side flap 3 is a portion that is provided in the drain opening abutment range S1 and extends outward in the width direction of the absorber 30. The front end edge of the side flap 3 is restricted by the root portion of the side flap 3, and corresponds to the portion on the front side among the two portions recessed inward in the most wide side direction W. In the absorbent article in which the side flaps 3 are present, the front end edge of the side flaps 3 is a boundary that restricts the discharge port abutment range S1 and the front side range S2. The rear end edge of the side flap 3 is limited by the root of the side flap 3, and corresponds to the inner recess of the most wide side direction W. Among the two parts, the part on the back side. The rear end edge of the side flap 3 may be located between the drain opening abutment range S1 and the rear side range S3. Here, a region between the front end edge of the side flap 3 in the front-rear direction L and the rear end edge of the side flap 3 is referred to as a "flank range". In the absorbent article having the side flaps, the drain opening abutment range S1 is an area substantially the same as the side flap range.

The side flaps 3 have a side sheet 12 and a non-skin sheet 20. The center of the front and rear direction of the side flaps 3 is disposed opposite to the drain opening of the wearer. The side flaps 3 are configured to be foldable toward the non-skin surface sheet 20, and are folded over the non-skin opposing side of the crotch portion of the undergarment when in use. The hip blades 4 are located behind the side flaps 3. The hips 4 are arranged on the opposite side of the skin of the undergarment when the non-skin opposing side of the underwear is folded over during use.

The front end edge of the hip blade 4 is restricted by the root portion of the hip blade 4, and corresponds to a portion recessed toward the inner side in the most wide side direction W. The front end edge of the hip blade 4 may coincide with the rear end edge of the side flap 3 or may not coincide.

As shown in Fig. 2, an adhesive region for applying an adhesive for fixing the absorbent article to the undergarment S is provided on the non-skin opposing surface of the non-skin surface sheet 20. The adhesive region includes a first main body adhesive region 61 and a second main body adhesive region 62 disposed in the main body portion 2, a side flap adhesive region 63 disposed on the side flap 3, and a hip joint adhesive region 64 disposed on the hip joint 4. The first body adhesion region 61 is separated from the second body adhesion region 62 in the front-rear direction, and is disposed further forward than the second body adhesion region 62.

The adhesive regions 61 to 64 are covered with a release sheet in a state before use. Stripping the sheet prevents the adhesive from deteriorating before use. Stripping thin The sheet is peeled off by the wearer during use. Further, in the absorbent article which does not have the release sheet, the packaging sheet which is individually wrapped with the absorbent article may be prevented from deteriorating before the use of the adhesive region.

In the non-skin sheet of the absorbent article, there is a non-adhesive region in which no adhesive is provided. The non-adhesive region extends from one end of the absorbent article in the widthwise direction W to the other end in a region overlapping at least the first intermediate portion 41 (see Fig. 2).

In the absorbent article 1, the first curved portion 41a and the second curved portion 41b are provided. The first curved portion 41a and the second curved portion 41b are located further rearward than the center of the front-rear direction of the drain opening contact range S1 and are located further forward than the rear end edge of the absorbent core 31. The first curved portion 41a and the second curved portion 41b extend in the widthwise direction W, and the absorbent article 1 can be bent in the thickness direction T. Further, the absorber 30 of the present embodiment is such that the rear end edge of the absorbent core substantially coincides with the rear end edge of the absorbent body.

The absorbent article 1 includes a first region R1 adjacent to the first curved portion 41a in front of the first curved portion 41a, and a second region R2 adjacent to the second curved portion 41b at the rear of the second curved portion 41b. And a first intermediate portion 41 located between the first curved portion 41a and the second curved portion 41b in the front-rear direction L. The first region R1 is a region from the front end edge 30F of the absorber 30 to the first curved portion 41a. The second region R2 is a region from the rear end edge 30R of the absorber 30 to the second curved portion 41b. The first intermediate portion 41 is a region between the first curved portion 41a and the second curved portion 41b. The basis weight of the absorbing material of the first intermediate portion 41 is lower than the basis weight of the absorbing material of the first region R1, and is higher than the absorption of the second region R2. The material has a lower basis weight per unit area. Further, although the first intermediate portion 41 may be a basis weight of the absorbing material, in the present embodiment, in particular, a region in which the fibrous material (for example, pulp fibers) in the absorbing material is 0, and the designed basis weight is 0. However, a region in which a small amount of the absorbing material mixed in the first region R1 or the second region R2 is disposed may be used.

The basis weight of the absorbing material in the first intermediate portion 41 is preferably 1/3 or less of the basis weight of the absorbing material adjacent to the first region R1 of the first curved portion 41a. Further, the basis weight of the absorbent material in the first intermediate portion 41 is preferably 1/3 or less of the basis weight of the absorbent material adjacent to the second region R2 of the second curved portion 41b. Thereby, the first intermediate portion 41 easily exhibits a function of absorbing an external force applied to the absorbent article as described later, and is easily deformed in accordance with the movement of the wearer's body. In order to make the effect more prominent, the basis weight of the absorbent material in the first intermediate portion 41 is 1/5 or less of the basis weight of the absorbent material adjacent to the first region R1 of the first curved portion 41a, and more preferably It is 1/10 or less. Further, a state in which the absorbing material is not present as a whole in the entire first intermediate portion 41 and partially dispersed may be employed.

The first curved portion 41a is a boundary where the rigidity changes. The rigidity of the region on the front side of the first curved portion 41a is different from the rigidity of the region on the rear side of the first curved portion 41a. More specifically, the basis weight of the absorbing material in the region on the front side of the first curved portion 41a is higher than the basis weight of the absorbing material in the region on the rear side of the first curved portion 41a. Therefore, the rigidity on the front side of the first curved portion 41a is higher than the rigidity on the rear side than the first curved portion 41a.

The second curved portion 41b is located further rearward than the first curved portion 41a. The second curved portion 41b is a boundary where the rigidity changes. The rigidity of the region on the front side of the second curved portion 41b is different from the rigidity of the region on the rear side of the second curved portion 41b. More specifically, the basis weight of the absorbing material in the region on the front side of the second curved portion 41b is lower than the basis weight of the absorbing material in the region on the rear side of the second curved portion 41b. Therefore, the rigidity on the front side of the second curved portion 41b is lower than the rigidity on the rear side than the second curved portion 41b.

The length of the first intermediate portion 41 in the front-rear direction L is an absorber that is larger than the portion of the first region R1 that is adjacent to the first curved portion 41a and the portion of the second region that is adjacent to the second curved portion 41b. The thickest part of 30 is longer.

Further, the length of the first intermediate portion 41 in the front-rear direction is preferably 10 mm or more and 40 mm or less. In the structure in which the length of the first intermediate portion 41 in the front-rear direction is changed, the length in the front-back direction of the center of the first intermediate portion 41 in the widthwise direction W may be 10 mm or more and 40 mm or less. Moreover, it is more preferable that the length of the first intermediate portion 41 in the front-rear direction is 10 mm or more and 30 mm or less.

It is preferable that the distance X between the center of the first curved portion 41a in the width direction and the center of the front and rear direction of the drain opening contact region S1 is 25 mm or more. In addition, it is preferable that the distance X between the center of the width direction of the first curved portion 41a and the center of the front-rear direction of the drain opening contact range S1 is 80 mm or less. Further, in the structure in which the first curved portion 41a has a predetermined length in the front-rear direction, the center of the front end edge of the first curved portion 41a in the widthwise direction is included. The distance from the center of the front-rear direction of the excretory opening abutment range S1 may be 25 mm or more and 80 mm or less.

The first curved portion 41a and the second curved portion 41b are convexly curved toward the rear in a plan view. In this case, the first intermediate portion 41 is also convexly curved toward the rear in a plan view. More specifically, the center of the first curved portion 41a in the width direction is located rearward of the outer edge of the first curved portion 41a. The center of the first curved portion 41a in the width direction is convex toward the rear. The center of the second curved portion 41b in the widthwise direction is located rearward of the outer edge of the second curved portion 41b. The center of the second curved portion 41b in the widthwise direction is convex toward the rear. Further, the distance between the first curved portion 41a and the second curved portion 41b in the front-rear direction may be fixed or changed.

The first curved portion 41a, the second curved portion 41b, and the first intermediate portion 41 do not overlap the adhesive region 60 in the thickness direction T. The first body adhesion region 61 is disposed in the first region R1, and the second body adhesion region 62 is disposed in the second region R2. The rear end edge 61R of the first body adhesion region 61 is located further forward than the first curved portion 41a, and the front end edge 62F of the second body adhesive region 62 is located further rearward than the second curved portion 41b.

The first curved portion 41a, the second curved portion 41b, and the first intermediate portion 41 are intermediate points of the outer edge 30E of the absorption chip and the center line CL from the center line CL in the widthwise direction W from the center line CL. extend. In other words, in the width direction W, the lengths of the first curved portion 41a, the second curved portion 41b, and the first intermediate portion 41 are half or more of the length of the absorbing sheet 31.

Further, the outer edge and the second curved portion of the first curved portion 41a The outer edge of 41b is preferably located at the outer edge of the absorbent core 31. In other words, the first curved portion 41a and the second curved portion 41b may be formed over the entire widthwise direction of the absorbing sheet. In this case, the absorbing core piece 31 is interrupted in the front-rear direction L by the first curved portion 41a and the second curved portion 41b. Further, in the present embodiment, the absorber 30 is such that the outer edge of the absorbent core 31 substantially coincides with the outer edge of the absorber 30. Therefore, the outer edge of the first curved portion 41a and the outer edge of the second curved portion 41b coincide with the outer edge 30E of the absorber 30.

The absorbent article 1 has a first bending guide portion 40 in the rear side range S3, and the first bending guide portion 40 is formed to extend along a center line CL connecting the centers of the widthwise directions W, and the absorbent article can be used. bending. In the present embodiment, the first bending guide portion 40 is composed of the third curved portion 42a, the fourth curved portion 42b, and the second intermediate portion 42. Alternatively, the first bending guide portion 40 may be constituted by a compression portion in which the absorbent core is pressed.

The third curved portion 42a and the fourth curved portion 42b extend in the front-rear direction L, and the absorbent article 1 can be bent in the thickness direction T. The basis weight of the absorbent material in the second intermediate portion 42 is lower than the basis weight of the absorbent material on the outer side in the width direction W of the first bending guide portion 40. The basis weight of the absorbent material in the second intermediate portion 42 is preferably 1/3 or less of the basis weight of the absorbent material in the second region R2. Thereby, the second intermediate portion 42 easily protrudes toward the buttocks of the wearer as will be described later. In order to make this effect more remarkable, the basis weight of the absorbing material of the second intermediate portion 42 is the absorbing material of the second region R2. The weight per unit area is 1/5 or less, and more preferably 1/10 or less. Further, a state in which the absorbing material is not present as a whole in the entire second intermediate portion 42 and partially dispersed may be employed. In other words, the second intermediate portion 42 has a design basis weight of 0, but may be a region in which a small amount of the absorbing material mixed in the second region R2 is disposed. Alternatively, the second intermediate portion 42 may be a region in which the weight per unit area of the absorbent material is zero.

The third curved portion 42a is a boundary where the rigidity changes. The third curved portion 42a is next to each other and the rigidity of the regions on both sides is different from each other. The fourth curved portion 42b is a boundary where the rigidity changes. The rigidity of the region on both sides is different from each other next to the fourth curved portion 42b. The second intermediate portion 42 extends along the center line CL.

It is preferable that the first bending guide portion 40 reaches the rear side of the center of the rear side region S3 in the front-rear direction L. The first bending guide 40 may be connected to the first intermediate portion 41. In this case, the second intermediate portion 42 constituting the first bending guide portion 40 may be connected to the first intermediate portion 41. As described later in the installation state, the first bending guide 40 induces a convex deformation of the wearer along the buttocks. Therefore, the front end portion of the bending deformation in the front-rear direction L is such that the absorbing material is easily convexly gathered and hardened. When the first bending guide 40 and the first intermediate portion 41 are continuously connected, since the basis weight of the absorbing material at the front end portion of the bending deformation in the front-rear direction L is small, the front end portion of the bending deformation is formed. Not easy to harden. Thereby, it is possible to give the wearer a comfortable feeling of installation. Further, the first bending guide portion 40 may not be connected to the first intermediate portion 41.

The absorbent article may have a second bending guide portion 43 in the rear side range S3, and the second bending guide portion 43 is configured to be guided from the first bending The lead portion 40 extends outward in the width direction W to bend the absorbent article. The second bending guide portion 43 may be composed of a region of the absorbing material having a basis weight lower than the basis weight of the absorbing material of the second region R2. In this case, the basis weight of the absorbing material constituting the second bending guide portion 43 is preferably 1/3 or less of the basis weight of the absorbing material of the second region R2. Further, the second bending guide portion 43 may be a region in which the basis weight of the absorbing material is 0, and the designed basis weight is 0. However, a small amount of absorption mixed from the second region R2 may be disposed. The area of the material.

The absorber 30 has a middle-high portion 33 located on the inner side in the width direction of the outer edge 30E of the absorber 30. The middle-high portion 33 is located inside the first region R1 and is located on the inner side in the width direction of the outer edge 30E of the absorber 30 of the first region R1. The thickness of the middle portion 33 is thicker than the thickness of the outer edge 30E of the absorber 30 of the first region R1. The basis weight of the absorbent material of the middle-high portion 33 is higher than the basis weight of the absorbent material of the outer edge 30E of the absorbent body 30 of the first region R1. The middle portion 33 is located on the rear side in the first region R1 and is adjacent to the first curved portion 41a.

Further, in the structure in which the absorber has two layers of the absorbing layer, the absorbing layer having two layers in the middle and high portions of the absorber may be provided, and only one layer of the absorbing layer other than the middle and high portions of the absorber. Moreover, as a modification, the intermediate sheet of the absorber may have an auxiliary sheet that absorbs body fluid, and the intermediate body of the absorber does not have an auxiliary sheet.

The absorbent article 1 has a compressed portion formed by at least being compressed in the thickness direction T by the absorbent core sheet 31. The compression part may have: front The side compression unit 81 and the long side compression unit 82 (see FIGS. 1 and 4).

The front side compression portion 81 is provided at least in the drain opening abutment range S1. The front side compression portion 81 may extend from the drain opening abutment range S1 to the front side range S2. The front side compression portion 81 can be formed by compressing the surface sheet 11 and the absorbent core sheet 31 and the core sheet covering member 32 in the thickness direction T. The front side compression 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 compression portion 81 can restrict the side edge of the wide side direction W of the middle and high portion 33.

The front side compression portion 81 is bent in the widthwise direction W near the front end edge of the absorbent core piece 31, and is U-shaped continuously connected. Instead, the front side compression portion 81 may be separately provided on both sides in the width direction W of the middle and high portion 33. In other words, the pair of front side compression portions 81 may be separately provided in a form of being interrupted.

The long-side compression portion 82 is provided on both sides of the rear side region S3, next to the center line CL, and more specifically, next to the first bending guide portion 40. The long-side compression portion 82 is formed by being compressed at least in the thickness direction by the absorber 30. The long-side compression portion 82 may be formed by compression of the absorber 30 and the surface sheet 11 in the thickness direction.

The long-side compression portion 82 extends in the front-rear direction L. The long-side compression portion 82 may extend linearly in the front-rear direction L or may be inclined with respect to the front-rear direction L and curved. The long side compression portion 82 may be formed on the front side of the position P1 which is the maximum width of the hip blade 4. It is preferable that the long-side compression portion 82 does not reach the first intermediate portion 41.

The pair of long side compression portions 82 may be formed at intervals in the front-rear direction L at the portion of the second bending guide portion 43.

The measurement of the "thickness of the absorbent body" in the present specification is carried out by the following measurement method.

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

The measurement position is the central portion of the absorbent body in the product width direction. At the time of measurement, the state in which the absorbent article was shrunk was not measured, but the state in which the stretchable member of the absorbent article was stretched was measured. In addition, parts other than the absorber are removed from the skin surface sheet other than the absorber and the non-skin sheet. A test piece having a diameter of 10 mm was used to prepare a test piece having a size of 30 mm × 30 mm using a gauge of PEACOCK manufactured by Ozaki Seisakusho Co., Ltd., and the thickness of the test piece was measured. The measuring instrument was adjusted so that the measurement pressure for the test piece was 3 g/cm2. Here, the above-described measurement was performed in each of the 10 samples, and the average value thereof was set to the length.

In addition, the measurement of the "area weight and density of the absorber" in the present specification is carried out by the following measurement method.

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

In the absorbent article packaged by the package, the package is opened, and the folded absorbent article is unfolded, and the thickness and area of the portion for measuring the unit weight area and the density are measured. followed by The portion for measuring the unit weight area and the density was cut out from the absorbent article to measure the weight of the cut portion. Next, the surface sheet, the back sheet, and the like, except for the absorber, are removed from the cut-out portion to measure the weight of the absorber. The unit weight area is calculated from the weight of the absorbent body and the area of the portion for measuring the unit weight area and the density. The density is calculated based on the unit weight area and thickness.

In addition, the measurement of the "length" of this specification is performed by the following measurement method.

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

Next, a tape measure (belt type: coated glass fiber PVC) manufactured by Shinwa Co., Ltd. was used, and the length of the state of the measurement target portion was measured along the measurement target portion. Here, the above-described measurement was performed in each of the 10 samples, and the average value thereof was set to the length.

The first covering portion of the core sheet covering member 32 and the second covering portion of the core sheet covering member 32 may be in the portion of the first intermediate portion 41 via the absorbent core sheet 31 or not via the absorbent core sheet 31 and in each other Engaged in a compressed state. Hereinafter, this joint portion will be referred to as "first pressure contact portion 51" (see FIG. 4).

Further, the first covering portion of the core sheet covering member 32 and the second covering portion of the core sheet covering member 32 may be applied to the portion of the first bending guide portion 40 via the absorbent core sheet 31 or not. Chips 31 and are subject to each other Engaged in a compressed state. Hereinafter, this joint portion will be referred to as "second crimp portion 52" (see FIG. 4).

Further, the first coating portion of the core sheet covering member 32 and the second coating portion of the core sheet covering member 32 may be passed through the absorbent core sheet 31 or not via the absorption portion of the second bending guide portion 43. The core pieces 31 are joined in a state of being compressed with each other. Hereinafter, this joint portion will be referred to as "third crimp portion 53" (see FIG. 4).

When the first intermediate portion 41, the first bending guide portion 40, and the second bending guide portion 43 do not constitute the absorbing material for absorbing the core piece 31, the pressure-bonding portions 51, 52, and 53 are not absorbing the core. The sheet 31 and a portion where the first cladding portion and the second cladding portion are directly joined to each other. When the first intermediate portion 41, the first bending guide portion 40, and the second bending guide portion 43 do not have the absorbing material for absorbing the core piece 31, the crimping portions 51, 52, and 53 are via the absorbing sheet. 31. A portion in which the first cladding portion and the second cladding portion are indirectly joined to each other.

The width of the first crimping portion 51 in the front-rear direction L is preferably smaller than the width of the first intermediate portion 41 in the front-rear direction L. Further, it is preferable that the first crimping portion 51 continuously extends in the widthwise direction W.

The second crimping portion 52 extends in the front-rear direction L along the first bending guide portion 40. The width of the second crimping portion 52 in the widthwise direction W is preferably smaller than the width of the first bending guide portion 40 in the widthwise direction W. The second crimping portion 52 may be connected to the first crimping portion 51.

The third crimping portion 53 extends along the second bending guide portion 43. The width of the third crimping portion 53 in the front-rear direction L is preferably larger than the front and rear The width of the second bending guide portion 43 to L is smaller. The third crimping portion 53 may be connected to the second crimping portion 52.

The first crimping portion 51, the second crimping portion 52, and/or the third crimping portion 53 are preferably not formed on the skin surface sheet 10. More specifically, the first crimping portion 51, the second crimping portion 52, and/or the third crimping portion 53 are preferably formed by only the core sheet covering member 32, or only the absorbent core sheet 31 and The core sheet covering member 32 is formed by crimping. Further, the crimping portions 51, 52, 53 can be formed by embossing.

(2) Installation status of absorbent articles

Next, the installation state of the absorbent article 1 configured as described above will be described. Fig. 5 is a perspective view of the absorbent article in use. Fig. 6 is a cross-sectional view taken along the line 6A-6A of Fig. 1 in which the absorbent article 1 is attached to the wearer. Fig. 7 is a cross-sectional view taken along the line 7A-7A of Fig. 1 in which the absorbent article 1 is attached to the wearer.

When the absorbent article 1 as a sanitary napkin is worn, the absorbent article 1 is fixed to the undergarment S. The drain opening abutment range S1 of the absorbent article 1 is held by the wearer's legs and receives the force from the outer side in the wide side direction W to the inner side in the wide side direction W. By pulling up the force, the excretory opening abutment range S1 is attached to the vicinity of the wearer's excretory opening (refer to Fig. 6).

The anus and gluteal groove are located further rearward than the perineum located behind the wearer's labia majora. More near the back than the perineum The cross-sectional shape is a shape of a central depression in the broad side direction. The rear side range S3 of the absorbent article is a buttock that is disposed to face the wearer.

The first bending guide portion 40 that extends in the front-rear direction L along the center line CL is formed in the rear side range S3. Therefore, the center of the rear side range S3 in the wide side direction W is easily protruded toward the wearer's body by the force from the outer side to the inner side of the absorbent article (see FIGS. 5 and 7). Thereby, in the rear side range S3, the absorbent article 1 can be deformed in accordance with the shape of the wearer's gluteal groove. As a result, the wearer can obtain a comfortable fit with the absorbent article 1 even on the buttocks.

In this manner, even if the first bending guide portion 40 protrudes along the gluteal groove, since the plurality of second bending guide portions 43 are formed in the wide side direction W in the rear side range S3, the rear side range S3 of the absorbent article It can be bent along the curvature of the wearer's buttocks. Thereby, the wearer can get a more comfortable fit on the buttocks.

Fig. 8 is a view showing a state in which the wearer who is equipped with the absorbent article 1 stands. The first region R1 of the absorbent article 1 is adhered to the crotch portion of the undergarment (the portion facing the underarm region of the wearer) via the first main body adhesive region 61. The second region R2 of the absorbent article 1 is adhered to the rear portion of the crotch portion of the undergarment (the portion facing the buttocks of the wearer) via the second main body adhesive region 62. In the state in which the wearer is standing, the wearer's buttocks are in a raised state.

Fig. 9 is a view showing a state in which the wearer is tilted up while the cross-sectional view shown in Fig. 8 is rotated by 90 degrees. Although the wearer leans back to sleep, the wearer's body is squeezed by the bedding, but in Figure 9, for the square It is explained that the wearer's body is not squeezed by the bedding. A line LB indicating a bedding is illustrated in Fig. 9. The area where the body and the line LB of the bedding overlap is an area where the body is pressed by the bedding and the body is deformed in a lying state.

Fig. 10 is a view showing a state in which the body of the wearer who is sleeping on his back is deformed by being pressed by the bedding. In the state shown in Fig. 10, the area where the line of the body and the bedding overlaps in Fig. 9 is deformed. In more detail, the raised portion of the wearer's buttocks is flattened, and a part of the wearer's buttocks is flat. The flattened portion of the buttocks is moved toward the lower side of the crotch (the left direction of Fig. 10), and is raised from the root of the leg to the front side of the leg. The second curved portion 41b is disposed at the end portion on the buttock side of the crushed portion of the buttocks, and the first curved portion 41a is disposed at the lower end portion of the crushed portion of the buttocks. Therefore, the first intermediate portion 41 of the absorbent article is deformed along the portion which is flattened by the raised portion of the buttocks, and is disposed along the flattened portion of the buttocks.

The center of the front-rear direction of the excretory opening abutment range S1 is a position relative to the excretory opening of the wearer. The deformation starting point of the first curved portion 41a and the deformation starting point of the second curved portion 41b are formed at positions facing the buttocks rearward of the discharge opening of the wearer. Therefore, when the absorbent article 1 is flattened at the raised portion of the buttocks, it is softly deformed as the buttocks are deformed. Thereby, in the lying posture, the absorbent article 1 maintains a state of being attached to the body.

(3) Effect

According to one embodiment, the absorbent article is provided with: The first curved portion 41a extending in the widthwise direction behind the excretory opening abutting range S1 and the second curved portion 41b extending rearward of the first curved portion 41a in the widthwise direction W. The first curved portion 41a and the second curved portion 41b constitute an absorbent article that can be bent in the thickness direction. The first region R1 adjacent to the first curved portion 41a in front of the first curved portion 41a, the second region R2 adjacent to the second curved portion 41b at the rear of the second curved portion 41b, and the front and rear direction L are provided. The first intermediate portion 42 is located between the first curved portion 41a and the second curved portion 41b. The basis weight of the absorbing material in the first intermediate portion 41 is lower than the basis weight of the absorbing material in the first region R1 and the second region R2. The first curved portion 41a, the second curved portion 41b, and the first intermediate portion 41 extend from the center line CL beyond the outer edge of the absorbent core sheet in the widthwise direction and the intermediate point of the center line. The length of the first intermediate portion 41 in the front-rear direction L is 10 mm or more and 40 mm or less.

Since the first intermediate portion 41 is a region having a low basis weight of the absorbent material, the external force applied to the absorbent article can be absorbed (released). By such an area, the center line CL of the absorbent article is extended to the left and right by more than half the length of the absorbent article 1 to facilitate the movement of the absorbent article to the right or left, or to the left and right. At the time of strength, the first intermediate portion 41 can be deformed to release an external force applied to the absorbent article. Further, the first intermediate portion 41 can be deformed in the lying posture of the wearer to release the force of pressing the absorbent article by the protrusion of the buttocks which are crushed by the buttocks of the wearer.

Further, since the length of the first intermediate portion 41 which is softly deformable in the front-rear direction L is long, even if the absorbent article is in the wearer's In the operation, when the external force from various directions is received, the drain opening abutting range S1 and the rear side range S3 can be independently deformed, and the drain opening abutting range S1 and the rear side range S3 are respectively attached to the wearer's The state of the body.

Fig. 11 is a view showing a state in which the absorbent article is subjected to the force of contracting in the front-rear direction L. As described above, since the length of the first intermediate portion 41 in the front-rear direction is relatively long, the absorbing sheet of the rear side region S3 can be deformed to overlap the absorbing sheet of the drain opening abutting range S1. Further, the absorbing sheet of the rear side range S3 may be deformed and overlapped below the absorbing sheet of the drain opening abutting range S1.

Fig. 12 is a view showing a state in which the rear side range S3 of the absorbent article is received by the center of the excretory opening abutting range S1 as an axis and is rotated to the left and right. In this state, since the length of the first intermediate portion 41 in the front-rear direction is relatively long, the rear side range S3 can be deformed by rotating the discharge port abutment range S1 as a base point and rotating it to a right and left angle.

Further, since the length of the first intermediate portion 41 in the front-rear direction is relatively long, the rear side range S3 of the absorbent article 1 can be rotationally deformed around the rotation axis CL of FIG. 5 independently of the drain opening contact range S1.

In the case where the wearer sleeps to turn over or limping, the rear side range S3 is a force that is subjected to rotation for the drain opening abutment range S1 or a force that moves to the left and right corresponding to the movement of the leg or the buttocks. According to the absorbent article constructed as described above, the rear side range S3 is independent of the drain opening abutment range S1 and can be freely movable in accordance with such a force. As a result, even in the wearer's activity, the drain port can be abutted to the range S1. Both the rear side range S3 and the rear side range S3 are continuously attached to the wearer. Thereby, it is possible to give the wearer a sense of security and a good wearing feeling.

Since the length of the first intermediate portion 41 in the front-rear direction L is 10 mm or more, the absorbent article can sufficiently absorb the portion where the raised portion of the buttocks is crushed in the portion of the first intermediate portion 41. Further, since the length of the first intermediate portion 41 in the front-rear direction is sufficiently long, the drain opening abutment range S1 and the rear side range S3 are easily deformed independently during the wearer's operation, and the drain port abuts even during the movement of the wearer. The range S1 and the rear side range S3 are also easily maintained in a state of being attached to the body.

According to one embodiment, the length of the first intermediate portion 41 in the front-rear direction L is 40 mm or less. Thereby, it is possible to provide an absorbent article which is excellent in wearing feeling, and which is capable of suppressing an unsafe feeling in absorbability (see comparative evaluation described later).

According to one embodiment, the length of the first intermediate portion 41 in the front-rear direction L is larger than the absorber of the first region R1 adjacent to the first curved portion 41a and the second region R2 adjacent to the second curved portion 41b. The thickest part of the part of the absorber is longer. Thereby, the absorbing sheet of the rear side range S3 can be easily deformed to overlap the absorbing sheet of the drain opening abutment range S1.

According to one embodiment, the first curved portion 41a, the second curved portion 41b, and the first intermediate portion 41 extend from one end of the absorbing sheet to the other end in the widthwise direction W. Thereby, the absorbing sheet of the rear side range S3 is easily deformed and superposed on the absorbing sheet of the drain opening abutment range S1 (refer to FIG. 11). In addition, the rear side range S3 is a discharge port abutment range S1 is a base point, and it is easy to change to a predetermined angle to the left and right (refer to Fig. 12).

According to one embodiment, the distance X between the center of the wide side direction W of the first curved portion 41a and the center of the front-rear direction L of the drain opening abutting range S1 is 25 mm or more and 80 mm or less. As a result of various investigations by the inventors of the present application, the starting point of the deformation of the lower side of the buttocks is often located rearward of 25 mm or more from the center of the front-rear direction L of the excretory opening contact range S1. Therefore, when the distance X between the center of the wide side direction W of the first curved portion 41a and the center of the front-rear direction L of the drain opening contact range S1 is 25 mm or more, the first curved portion 41a and the first intermediate portion 41 are located on the buttocks. The starting point of the deformation of the underarm. In addition, since the first curved portion 41a and the first intermediate portion 41 are not located at the portion where the body pressure of the buttocks is most applied, the center of the wide side direction W of the first curved portion 41a and the front-rear direction L of the drain opening contact range S1. The distance X of the center is preferably 80 mm or less. Thereby, the discomfort of the wearer can be reduced.

According to one embodiment, the first curved portion 41a and the second curved portion 41b are convexly curved rearward in plan view. The portion that is convexly curved toward the rear is a convex portion that is convexly convex toward the rear when it is lifted up, and protrudes away from the body. The first curved portion 41a, the second curved portion 41b, and the first intermediate portion 41 are separated from the body, and the first curved portion 41a, the second curved portion 41b, and the first intermediate portion 41 can absorb deformation generated when the upper portion is raised. Therefore, the shape in which the first region R1 and the second region R2 follow the curvature of the body is maintained, and the entire absorbent article is arranged along the curvature of the body. In addition, as shown in FIG. 5 and FIG. 11, in the rear side range S3 In the state in which the excretory opening abutment range S1 is raised (wearing state), the first curved portion 41a and the second curved portion 41b are convexly curved rearward in a plan view, so that the rear side range S3 is easily deformed and the fifth portion is wound. The central axis CL of the figure rotates.

According to one embodiment, the absorbent article 1 has a non-skin sheet 20 that is disposed on the non-skin side of the absorbent body. The non-skin surface sheet 20 is provided with adhesive areas 61, 62, 63, 64 for fixing the absorbent article 1 to the adhesive of the undergarment. The non-adhesive region in which the adhesive is not provided extends in at least a portion overlapping the first intermediate portion 41 from one end of the absorbent article in the widthwise direction W to the other end (the region between the adhesive region 61 and the adhesive region 62) . Thereby, even if the wearer's buttocks are convex and the force from the buttocks is applied to the first intermediate portion 41, the first intermediate portion 41 and the underpants are independently deformed, and the force can be absorbed. Therefore, the protruding force generated by the flattening of the wearer's buttocks is not easily transmitted to the underpants, and the adhesion of the absorbent article can be easily maintained.

According to one embodiment, at least the stretchable member 90 that expands and contracts in the front-rear direction L is joined to the side sheet 12, and the effective long portion Le that exhibits the stretchability of the stretchable member 90 is in the front-rear direction L, spanning the first intermediate portion 41. The first region R1 extends to the second region R2. Since the rigidity of the first intermediate portion 41 is low, in the natural state, the first intermediate portion 41 is contracted in the front-rear direction by the contraction action of the elastic member 90. Further, since the non-adhesive region where the adhesive is not present is present in the portion of the first intermediate portion 41, the absorbent article is in a state where the first intermediate portion 41 is contracted in the front-rear direction L. Put on the underwear. Thereafter, when the wearer pulls up the panty, the contracted portion of the first intermediate portion 41 is elongated in conjunction with the elongation of the undergarment. As a result, when the wearer wears the underpants, the first intermediate portion 41 is in a state of being stretched (a state in which wrinkles are caused by shrinkage), and the wearer can be provided with a good wearing feeling. Further, in general, during or after wearing the underpants, there is a case where the load is applied to the adhesive region due to the elongation of the undergarment and the absorbent article is peeled off from the undergarment. However, in the present embodiment, the non-adhesive region where the adhesive does not exist is a region that cushions the strength corresponding to the elongation of the undergarment, so that the absorbent article is peeled off from the undergarment corresponding to the elongation of the undergarment.

According to one embodiment, the absorbent article has a hip pad attachment region 64 that is disposed on the hip pad and has an adhesive for securing the hip pad to the undergarment. The rear side edge of the effective long portion Le of the stretchable member 90 is disposed on the front side of the rear side edge of the hip pad adhesion region 64. Thereby, the elastic force of the elastic member 90 is not excessively applied to the hip blade adhesion region 64. Thereby, the adhesion to the undergarment generated by the hip-wing region 64 can be suppressed, and the expansion and contraction force of the stretchable member 90 can be prevented, and the hip-wing region 64 can be peeled off from the underpants.

According to one embodiment, the absorbent body has a middle-high portion 33 located on the inner side in the width direction of the outer edge of the absorbent body in the discharge port abutment range. The thickness of the middle portion 33 is thicker than the thickness of the outer edge of the absorber of the first region R1. The middle portion 33 is adjacent to the first curved portion 41a in the first region R1. The rigidity between the first region R1 and the first intermediate region 41 is adjacent to the middle portion 33 of the first region R1 and the first curved portion 41a. And the difference in thickness becomes larger, forming a more defined starting point of deformation. Therefore, the first intermediate portion 41 and the first region R1 can be arranged along the body in different shapes.

According to one embodiment, the absorbent article includes the first compression portion 81 that compresses the absorber in the thickness direction. The first compression portion 81 is disposed along the outer edge of the middle portion 33. Thereby, the force from the wearer's leg is applied to the first compression unit 81. The first compression portion 81 serves as a base point for deformation, and the intermediate portion 33 is bonded to the armpit of the wearer (see FIG. 6).

According to one embodiment, in the first intermediate portion 41, the non-joining region where the skin-surface sheet 10 and the core sheet covering member 32 are not joined continuously extends in the width direction. Thereby, even if the first intermediate portion 41 is softly deformed, since the degree of freedom of the absorbent sheet of the first intermediate portion 41 is high, the skin surface sheet 10 can suppress the uncomfortable feeling to the wearer.

According to one embodiment, the core sheet covering member 32 has a first covering portion on the skin surface side of the absorbent core sheet 31 and a second coating portion on the non-skin surface side of the absorbent core sheet 31. unit. The first cladding portion and the second cladding portion may be joined to each other at a portion of the first intermediate portion 41 via the absorbing core sheet 31 or without being absorbing the core sheet 31 (see FIG. 4). The first intermediate portion 41 is a portion that is softly deformed in accordance with the movement of the wearer. Therefore, the first intermediate portion 41 and the vicinity thereof are portions in which the absorbent core sheet 31 is easily deformed or wrinkled together with the movement of the wearer. In the present embodiment, in the portion of the first intermediate portion 41, the first covering portion and the second covering portion are joined to each other via the absorbing sheet 31 or the absorbing sheet 31 without being compressed. Therefore, it can be long-term The shape of the core covering member 32 is maintained to continuously ensure the fit of the absorbent article.

According to one embodiment, the absorbent article has a side flap 3 that extends outward in the widthwise direction than the outer edge of the absorbent body in the widthwise direction W, and is foldable in use; and the hip flap 4 It is bulged to the outside of the wide side direction in the rear side range S3. At least a portion of the first intermediate portion 41 is disposed between the rear end portion of the side flap 3 and the front end portion of the hip blade 4. The area between the side flaps 3 (the excretion opening abutment range S1) and the area of the hip joint 4 are preferably in close contact with the wearer's skin area. Since the first intermediate portion 41 is provided between the region between the side flaps 3 (the drain opening abutment range S1) and the region of the hip flap 4, the wearer's skin is brought into close contact with the drain opening abutment range S1 and the hip joint. In the state of both sides of the region, the absorbent article can be deformed in the portion of the first intermediate portion 41.

According to one embodiment, the rear side range S3 is provided to constitute a first bending guide 40 that extends along the center line CL and that can bend the absorbent article. The rear side range S3 is a position facing the buttocks of the wearer, and the center of the wide side direction of the rear side range S3 is a gluteal groove facing the wearer. When the first bending guide portion 40 exists in the center of the width direction of the rear side range S3, the first bending guide portion 40 is easily worn along when the inner side force in the wide side direction is applied to the absorbent article. The gluteal groove of the person is prominent. Thereby, it is possible to provide an absorbent article which is easier to fit the buttocks of the wearer.

According to one embodiment, the first bending guide 40 is connected to the first intermediate region 41. Thereby, the second region R2 is next to the center line CL is divided into left and right. Therefore, the portion on the left side of the second region R2 and the portion on the left side of the third region R3 are easily deformed independently, and the adhesion is improved. Further, since the absorbing material of the second region R2 is prevented from moving over the center line CL, local concentration of the absorbing material can be prevented.

According to one embodiment, the first bending guide portion 40 reaches the rear side of the center of the rear side region S3 of the front-rear direction L. In the wearing, the first bending guide 40 protrudes toward the skin side of the wearer. Since the first bending guide 40 extends in the front-rear direction L in the rear side range S3, it is easy to stick along the gluteal groove of the wearer.

According to one embodiment, the core sheet covering member 32 has a first covering portion on the skin surface side of the absorbent core sheet 31 and a second coating portion on the non-skin surface side of the absorbent core sheet 31. unit. In the first bending guide portion 40, the non-joining region where the skin-surface sheet 10 and the core sheet covering member 32 are not joined continuously extends in the front-rear direction. The first covering portion and the second covering portion can be joined to each other at a portion of the first bending guide portion 40 via the absorbent core sheet 31 or without being absorbing the core sheet 31 and compressed. The first bending guide 40 and its vicinity are portions that are easily deformed as described above. Therefore, in the first bending guide portion 40 and the vicinity thereof, the absorbent core piece 31 is easily deformed or wrinkled together with the movement of the wearer. In the present embodiment, at the portion of the first bending guide portion 40, the first covering portion and the second covering portion are joined to each other via the absorbing sheet 31 or the absorbing sheet 31 without being compressed by each other. . Therefore, the shape of the core covering member 32 can be maintained for a long period of time, and the fit of the absorbent article can be continuously ensured.

According to one embodiment, the setting: next to the first bending guide The lead portion 40 extends in the front-rear direction L on both sides, and the absorber is subjected to a pair of long-side compression portions 82 that are pressed. The pair of long-side compression portions 82 are relatively high in rigidity, and therefore serve as a base point for absorbing the deformation of the core piece 31. The first bending guide portion 40 between the pair of long side compression portions 82 is more likely to bulge toward the body side of the wearer. Thereby, it is possible to provide an absorbent article which is closer to the wearer's body and which can give the wearer a more comfortable fit.

According to one embodiment, the pair of long side compression portions 82 do not reach the first intermediate portion 41. The pair of long side compression portions 82 are relatively rigid portions. Since the portion having such a high rigidity is not formed in the first intermediate portion 41, the absorbent article is more likely to be deformed in the portion of the first intermediate portion 41.

According to one embodiment, the absorber has a second bending guide portion 43 that can extend the absorbent article from the first bending guide portion 40 to the outside in the widthwise direction W in the rear side region S3. The second bending guide portion 43 forms a deformation base point that extends in the width direction W. Since the absorbent core piece 31 of the rear side range S3 can deform the second bending guide portion 43 as a base point, the absorbent article 1 can be easily bonded in an arc along the longitudinal direction L of the body. In particular, as shown in FIG. 5, when the first bending guide portion 40 protrudes along the gluteal groove, there is a case where it is difficult to deform the rear side region S3 along the arc in the longitudinal direction L of the body. Even in this case, it is possible to easily deform the rear side range S3 in accordance with the curvature in the front-rear direction L of the body by the second bending guide portion 43 of the deformation base point. Thereby, it is possible to provide an absorbent article which is closer to the wearer's body and which can give the wearer a more comfortable fit.

According to one embodiment, a pair of long-side compression portions 82 that are pressed against the first bending guide portion 40 and extend in the front-rear direction L on both sides are provided. The pair of long-side compression portions 82 are formed at intervals in the front-rear direction L at the portion of the second bending guide portion 43. The pair of long side compression portions 82 are relatively rigid portions. Since the portion having the high rigidity is formed at a space in the portion of the second bending guide portion 43, the absorbent article is more easily deformed at the portion of the second bending guide portion 43.

According to one embodiment, the first bending guide portion 40 has a second intermediate portion 42 extending along the center line CL and a third curved portion 42a extending in the front-rear direction L next to the second intermediate portion 42. And the fourth curved portion 42b. The third curved portion 42a and the fourth curved portion 42b constitute an absorbent article that can be bent in the thickness direction. The basis weight of the absorbent material in the second intermediate portion 42 is lower than the basis weight of the absorbent material on the outer side in the width direction W of the first bending guide portion 40. By this, the first bending guide portion 40 is based on the third curved portion 42a and the fourth curved portion 42b, and is easily bent at the portion of the second intermediate portion 42. Thereby, the rear side range S3 is easily attached to the wearer's gluteal groove.

(4) Absorbent articles according to the modification

Next, the absorbent article according to the modification will be described using FIG. In the description of the absorbent article according to the modification, the structure different from the above-described embodiment will be described, and the same reference numerals will be given to the same structures as those of the above-described embodiment, and the description thereof will be omitted.

The absorbent article 1 according to the modification has a compression portion that at least compresses the absorbent body 30 in the thickness direction. The compression portion compresses the surface sheet 11 and the absorber 30 in the thickness direction. In the compression unit according to the modification, the first compression unit 81 disposed in the first region R1, the second compression unit 82 disposed in the second region R2, and the second compression unit 82 are disposed later than the second compression unit 82. The rear side compression portion 84 on the side.

The long-side compression portion 82 is provided on both sides of the rear side region S3, next to the center line CL, and more specifically, next to the first bending guide portion 40. The long-side compression portion 82 extends in the front-rear direction L. The long-side compression portion 82 may extend linearly in the front-rear direction L or may be inclined with respect to the front-rear direction L and curved. The long side compression portion 82 may be formed on the front side of the position P1 which is the maximum width of the hip blade 4. It is preferable that the long-side compression portion 82 does not reach the first intermediate portion 41.

The pair of rear side compression portions 84 are on the rear side range S3, and are disposed on both sides next to the center line CL. The rear side compression portion 84 can be formed by compression of the absorber 30 and the surface sheet 11 in the thickness direction. The pair of rear side compression portions 84 are disposed apart from each other by the center line CL passing through the center of the wide side direction W of the absorbent article. The pair of rear side compression portions 84 may be located on the rear side than the position P1 of the maximum width of the hip blades 4.

(5) Other implementations

The absorbent article of the present embodiment is a sanitary napkin for night use, but as another embodiment, it may be a sanitary napkin for daily use. In addition, the sanitary napkin may not have a hip blade.

The present invention has been described in detail above using the embodiments described above, but those skilled in the art should understand that the invention is not limited to the embodiments described in the specification. The present invention can be modified and modified as being modified without departing from the spirit and scope of the invention as defined by the appended claims. Therefore, the description of the present specification is intended to be illustrative, and is not intended to limit the invention.

(6) Comparative evaluation

Next, a comparative evaluation of the length of the first intermediate portion 41 in the front-rear direction L will be described. Table 1 shows the results of comparative evaluation showing the length of the first intermediate portion 41. In the comparative evaluation test, the absorbent articles of Examples 1 to 5 and the absorbent articles of Comparative Examples 1 to 3 were compared, and the maintenance state of the fit property and the unsafeness for the absorbability caused by the appearance were compared. The feeling is evaluated. In the absorbent articles of Examples 1 to 4 and the absorbent articles of Comparative Examples 1 to 3, although the length of the first intermediate portion 41 in the front-rear direction was different, the other structures were the same.

Question 1 "Can you maintain it compared with the usual sanitary napkin? Fit". The sample having a ratio of the number of people who answered "can be maintained" to the inquiry 1 was 65% or more, and the sensory evaluation was good, and the evaluation was ○. In addition, the sample having a ratio of the number of people who answered "can be maintained" to the inquiry 1 was less than 65%, and the sensory evaluation was poor, and the evaluation was ×.

Inquiries 2 "Whether the wearing feeling is good (whether or not you feel uncomfortable) compared with the usual sanitary napkins." A sample having a ratio of "very good, slightly better" to the inquiry 2 of 65% or more was evaluated as a sensory evaluation, and the evaluation was ○. In addition, among the samples of the evaluation of ○, the sample with a very high number of respondents exceeding 20% of the total number of people was evaluated as ◎ because the evaluation of the wearing feeling was better.

Inquiry 3 "Whether it is less insensitive to the absorption of the appearance (or whether it does not cause insecurity) compared with the usual sanitary napkins." For the answer to the inquiry 2, the sample with a ratio of "the number of people with less insecurity" or "no insecurity" was 65% or more, and the sensory evaluation was good, and the evaluation was ○. In addition, the sample having a ratio of the number of people who answered "less insecurity" or "no insecurities" to the inquiry 1 was less than 65%, and the sensory evaluation was poor, and the evaluation was ×.

In the absorbent article according to Examples 1 to 4, the length of the first intermediate region in the front-rear direction is 10 to 50 mm, and it is possible to obtain the evaluation of the adhesion, the goodness of the wearing feeling, and the feeling of insecurity for absorbability. The evaluations are all good results. Further, the absorbent articles according to Examples 1 to 3 can give a better wearing feeling. From this result, the length of the first intermediate portion in the front-rear direction is preferably 10 mm or more and 40 mm or less, and more preferably 10 mm or more and 30 mm or less. More in detail In other words, it was found that the length in the front-rear direction of the first intermediate portion was 10 mm or more, and the result of good adhesion was obtained. In addition, it is understood that the length of the first intermediate portion is 40 mm or less, and it is possible to suppress an unsafe feeling in absorbability and to have an excellent wearing feeling. Further, it can be seen that the wearing feeling is better by the length of the first intermediate portion being 30 mm or less. Further, it can be seen that when the length of the first intermediate portion is 50 mm, the length of the center of the rear side region is too long, which gives the wearer an uncomfortable feeling.

Next, the amount of protrusion of the underarm side of the crushed portion of the buttocks of the wearer who was sleeping on the back was measured. The amount of protrusion is the end portion of the crotch portion of the buttocks of the wearer's buttocks in the state of being in a state of being asleep (P1 in Fig. 4(c)), and the leg-end portion in the convex portion of the buttocks (4th) (c) The distance of P2) of the figure. The amount of protrusion of the five test subjects was measured. The measurement results are shown in Table 2.

From the measurement results, it can be known that the amount of protrusion of the buttocks is 10 mm to 30 mm. Therefore, it can be seen that the length of the first intermediate portion in the front-rear direction is 10 mm or more, and it is possible to extend from the end portion of the lower side of the flattened portion of the wearer's buttocks to the protruding leg-side end portion of the buttocks. The ridge portion is covered. In addition, as long as the length of the first intermediate portion 41 in the front-rear direction is When the weight is about 30 mm, the force applied to the absorbent article by the projection of the buttocks can be more reliably released by the first bending guide portion 40. In consideration of the individual difference in the wearing position of the absorbent article, as described above, the length of the first intermediate portion 41 in the front-rear direction is preferably 40 mm or less.

The present invention has been described above in detail using the embodiments described above, but it should be understood by those skilled in the art that the invention is not limited to the embodiments described herein. The present invention can be carried out without departing from the spirit and scope of the invention as defined by the appended claims. Therefore, the description of the present specification is intended to be illustrative, and is not intended to limit the invention.

In addition, the entire content of Japanese Patent Application No. 2015-219128, filed on Nov. 9, 2015, is hereby incorporated by reference.

[Industry use possibility]

It is possible to provide an absorbent article which is also easy to adhere to the wearer's body when the wearer is active, and which has a good wearing feeling.

1‧‧‧Absorbables

3‧‧‧Flanking

4‧‧‧ hip wing

10‧‧‧Skin sheet

11‧‧‧Surface

12‧‧‧Side sheet

30‧‧‧Acceptor

33‧‧‧High and Medium Department

40‧‧‧1st bend guide

41‧‧‧1st intermediate zone

43‧‧‧2nd bend guide

81‧‧‧1st compression department

81‧‧‧Front compression department

82‧‧‧Long-side compression department

82‧‧‧2nd compression department

91‧‧‧ front edge

92‧‧‧ rear edge

CL‧‧‧ center line

Claims (22)

An absorbent article having: a front-rear direction and a broad-side direction, which are orthogonal to each other; a discharge opening abutting range, which is opposite to a wearer's drain opening; and a rear side range, which is located at the aforementioned drain opening a rear side of the range; and an absorbent body disposed at least in the range of the drain opening abutting region and the rear side region, and having an absorbent core comprising an absorbent material, characterized by: providing: abutting the discharge port a first curved portion extending rearward in the widthwise direction and a second curved portion extending rearward of the first curved portion and extending in the widthwise direction, wherein the first curved portion and the second curved portion are The absorbent article may be curved in a thickness direction, and may be provided adjacent to a first region of the first curved portion in front of the first curved portion and a second adjacent portion of the second curved portion at a rear side of the second curved portion. a second region and a first intermediate portion located between the first curved portion and the second curved portion in the front-rear direction, wherein a weight per unit area of the absorbent material in the first intermediate portion is larger than the first region and the First In the second region, the absorbing material has a lower basis weight, and the first curved portion, the second curved portion, and the first intermediate portion are lined from the center line connecting the centers of the absorbent articles in the widthwise direction. Extending the outer edge of the aforementioned absorbent core sheet and the intermediate point of the aforementioned center line in the broad side direction, The length of the first intermediate portion in the front-rear direction is 10 mm or more and 40 mm or less. The absorbent article according to claim 1, wherein the length of the first intermediate region in the front-rear direction is the absorbent body that is closer to a portion of the first region adjacent to the first curved portion, and the second The thickest portion of the absorbent body in the portion adjacent to the second curved portion of the region is longer. The absorbent article according to claim 1 or 2, wherein the first curved portion, the second curved portion, and the first intermediate portion are in the widthwise direction from one end of the absorbent core sheet Extend to the other end. The absorbent article according to the first or second aspect of the invention, wherein the distance between the center of the first side of the first curved portion and the center of the front and rear direction of the discharge port contact range is 25 mm or more and 80 mm or less. . The absorbent article according to claim 1 or 2, wherein the first curved portion and the second curved portion are convexly curved toward the rear in a plan view. An absorbent article according to claim 1 or 2, which has a non-skin surface which is disposed on the non-skin side of the absorbent body The sheet is provided on the non-skin sheet: an adhesive region having an adhesive for fixing the absorbent article to the undergarment, and a non-adhesive region in which the adhesive is not provided is at least partially overlapped with the first intermediate portion Upper end of the absorbent article extending from the wide side direction to the other end. The absorbent article according to claim 6 which has a skin surface sheet disposed on the skin surface side of the absorbent body, wherein the skin surface sheet comprises: a surface sheet covering the absorbent body, and a width from the front surface The edge sheet of the surface sheet in the side direction of the side sheet extending toward the outside in the width direction is joined to the side sheet at least in the front-back direction, and the stretchable member is effective in stretching. The portion extends from the first region to the second region across the first intermediate region in the front-rear direction. The absorbent article of claim 7, wherein the absorbent article has a hip-winged body that is swelled outward in the width direction of the rear side region, and a hip-wing adhesive region that is disposed on the hip-wing region. An adhesive for fixing the hip pad to the undergarment, wherein a rear side edge of the effective long portion of the stretchable member is disposed on a front side of a rear side edge of the hip pad adhesion region. The absorbent article according to claim 1 or 2, wherein the absorbent body has a middle-high portion located on the inner side in the width direction of the outer edge of the absorbent body in the contact opening range of the absorbent body, The thickness of the middle-high portion is thicker than the thickness of the outer edge of the absorber in the first region, and the middle-high portion is adjacent to the first curved portion in the first region. The absorbent article according to claim 9, wherein the first compressed portion is compressed along the outer edge of the middle and high portions, and includes the first compressed portion in which the absorbent body is compressed in the thickness direction. The absorbent article according to claim 1 or 2, further comprising: a skin sheet disposed on the skin side of the absorbent body, and a sheet covering material in which the absorbent sheet is wrapped In the first intermediate portion, the non-joining region where the skin surface sheet and the core sheet covering material are not joined continuously extends in the width direction. The absorbent article according to claim 1 or 2, further comprising a core covering material for wrapping the absorbent core sheet, wherein the core sheet covering material has a ratio of more than the absorbent sheet The first covering portion on the side of the skin surface and the second covering portion on the non-skin surface side of the absorbent core sheet, the first covering portion and the second covering portion are in the first middle portion The portions of the regions are joined by the aforementioned absorbent core sheets or without being compressed by the aforementioned absorbent core sheets. The absorbent article according to claim 1 or 2, further comprising: a side flap extending outward in the width direction from an outer edge of the absorbent body in the widthwise direction, and is usable And a hip wing that is swelled outward in the width direction in the rear side region, and at least a portion of the first intermediate portion is provided at a rear end portion of the side wing and a front end portion of the hip blade between. The absorbent article according to claim 1 or 2, further comprising: a first bending guide portion that is formed to extend along the center line in the rear side range and that can bend the absorbent article. The absorbent article according to claim 14, wherein the first bending guide is connected to the first intermediate region. The absorbent article according to claim 14, wherein the first bending guide portion reaches a rear side of a center of the rear side range in the front-rear direction. The absorbent article according to claim 14, further comprising: a skin surface sheet disposed on the skin surface side of the absorbent body, and a core sheet covering material in which the absorbent core sheet is wrapped, the core sheet a cladding material having a body that is more muscular than the aforementioned absorbent core a first covering portion on the skin side and a second covering portion on the non-skin surface side of the absorbent core, and the skin sheet and the sheet package are not joined to the first bending guide portion The non-joining region of the cladding material continuously extends in the front-rear direction, and the first cladding portion and the second cladding portion are at the portion of the first bending guide portion, via the absorption sheet or without the absorption. The chips are joined in a state in which they are compressed. The absorbent article according to claim 14, wherein the absorbent member is provided with a pair of long-side compression portions that are pressed toward the front-rear direction on both sides of the first bending guide portion. . The absorbent article according to claim 18, wherein the pair of long-side compressed portions do not reach the first intermediate portion. The absorbent article according to claim 14, wherein the absorbent body extends outward from the first bending guide portion in the widthwise direction in the rear side range, and has a configuration capable of bending the absorbent article. The second bending guide. The absorbent article according to claim 20, wherein the absorbent member is provided with a pair of long-side compression portions that are pressed against the first bending guide portion and extend in the front-rear direction on both sides. The pair of long-side compression portions are formed at intervals in the front-rear direction at a portion of the second bending guide portion. The absorbent article according to claim 14, wherein the first bending guide portion has a second intermediate portion extending along the center line and the second intermediate portion facing the front side The third curved portion and the fourth curved portion extending in the rear direction, the third curved portion and the fourth curved portion are configured to bend the absorbent article in the thickness direction, and the basis weight of the absorbent material in the second intermediate portion It is a unit weight of the absorbing material which is lower than the outer side in the width direction of the first bending guide portion.