CN111479540A

CN111479540A - Absorbent article

Info

Publication number: CN111479540A
Application number: CN201880079912.9A
Authority: CN
Inventors: 山下纯子; 工藤悦子
Original assignee: Unicharm Corp
Current assignee: Unicharm Corp
Priority date: 2017-12-28
Filing date: 2018-12-14
Publication date: 2020-07-31
Anticipated expiration: 2038-12-14
Also published as: CN111479540B; WO2019131230A1; TW201940146A

Abstract

The absorbent article has: an absorbent body (40) disposed across the crotch region (S3), the front waistline region (S1), and the rear waistline region (S2); and an outer cover (15) disposed at least in the front waistline region and the rear waistline region on the non-skin surface side of the absorbent body. A rear non-bonded region (NR) where the outer part of the absorbent body is not bonded to the outer package is provided at the front end of the rear waist region, and a front bonded region (FA) where the outer part of the absorbent body is bonded to the outer package is provided at the rear end of the front waist region.

Description

Absorbent article

Technical Field

The present invention relates to an absorbent article such as a disposable diaper.

Background

The disposable diaper described in patent document 1 includes: an outer body disposed in the front waistline region and the rear waistline region; and an absorbent main body disposed on the skin surface side of the outer cover and extending over the front waistline region, the rear waistline region, and the crotch region. The rear end portion of the absorbent main body is formed by a wide end portion having a length in the width direction longer than that of the front end portion of the absorbent main body. The wide end portion is fixed to the outer package body in the rear waist region. This ensures the area of the absorbent main body, facilitates the securement of the absorbent area, and suppresses leakage of excrement.

Documents of the prior art

Patent document

Patent document 1: international publication No. 2015/025760

Disclosure of Invention

Generally, when the area of the absorbent main body is secured, the area surrounding the circumference of the wearer's leg (Japanese: foot り) tends to be small. Therefore, when the wearer wears the leg, the leg may not be smoothly inserted into the leg hole opening. Further, since the absorbent article is in close contact with the root portions of the legs, smooth movement of the legs may be hindered when the wearer moves the legs when wearing the absorbent article.

Therefore, an absorbent article that can suppress leakage and that is easy to insert the legs when worn and easy to move the legs when worn is desired.

An absorbent article in one form has: a front-back direction; a width direction orthogonal to the front-rear direction; a front waistline region; a rear waist region; a crotch region disposed between the front waistline region and the rear waistline region; an absorbent main body disposed so as to straddle the crotch region, the front waistline region, and the rear waistline region; and an outer package body disposed at least in the front waistline region and the rear waistline region on a non-skin surface side of the absorbent body, wherein a rear non-bonded region where an outer portion of the absorbent body is not bonded to the outer package body is provided at a front end portion of the rear waistline region, and a front bonded region where the outer portion of the absorbent body is bonded to the outer package body is provided at a rear end portion of the front waistline region.

An absorbent article in one form has: a front-back direction; a width direction orthogonal to the front-rear direction; a front waistline region; a rear waist region; a crotch region disposed between the front waistline region and the rear waistline region; an outer package body for the front waist region; an outer package body of the rear waistline region; and an absorbent main body, wherein the outer package of the front waist region is a front side outer package disposed in the front waist region, the outer package body of the rear waist region is a rear outer package body which is separated from the front outer package body in the front-rear direction and is disposed in the rear waist region, the absorbent main body is disposed so as to straddle the front side outer package and the rear side outer package on skin surface sides of the front side outer package and the rear side outer package, wherein a length of the absorbent main body in the width direction at a front end edge of the rear waistline region is longer than a length of the absorbent main body in the width direction at a rear end edge of the front waistline region, a rear non-bonded region where the outer side portion of the absorbent main body and the rear outer package are not bonded is provided at the front end portion of the rear waist region.

Drawings

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

Fig. 2 is a sectional view of the absorbent article shown in fig. 1, taken along the section a-a.

Fig. 3 is a sectional view of the absorbent article shown in fig. 1, taken along the section B-B.

Fig. 4 is a view schematically showing a wearing state of the absorbent article according to the embodiment.

Fig. 5 is a view schematically showing a wearing state of the absorbent article according to the embodiment.

Detailed Description

(1) Brief description of the embodiments

At least the following matters will be made clear from the description of the present specification and the drawings.

Generally, the position sandwiched by the legs of the wearer is shifted to the front side with respect to the center in the front-back direction of the absorbent article. Therefore, the rear end portion of the front waistline region is easily sandwiched by the legs. In the absorbent article described in patent document 1, since the non-joined region is provided at the rear end portion of the front waistline region, the absorbent body may be deformed inward in the width direction when sandwiched between the legs. This shortens the width of the absorber, and makes it difficult to secure an absorption area on the front waistline region side, which may cause leakage.

In an absorbent article of one aspect, the outer side portion of the absorbent main body is joined to the exterior body at the rear end portion of the front waistline region. Therefore, when a force is applied to the rear end portion of the front waistline region by the legs of the wearer or the like during wearing, the absorbent main body of the front waistline region is less likely to deform in the width direction. Therefore, the length of the absorbent body in the width direction in the front waistline region can be easily ensured, and the absorbent area on the front waistline region side can be easily ensured. As a result, leakage of excrement can be suppressed. In addition, the outer portion of the absorbent main body is not joined to the outer package body at the front end portion of the rear waist region. Therefore, the outer body can move relative to the absorbent body at the front end portion of the rear waist region, and can deform so as to enlarge the leg hole openings. Therefore, when the wearer wears the garment, the legs can be easily inserted into the leg hole opening smoothly. Further, when the wearer moves the legs during wearing, the leg-surrounding opening can be deformed so as to be enlarged, and the wearer can move the legs smoothly.

In the absorbent article described in patent document 1, the wide end portion of the absorbent main body is fixed to the outer cover in the rear waist region. The leg opening on the rear waistline region side is smaller than the leg opening on the front waistline region side, and the region surrounding the base of the wearer's leg is likely to be narrowed. Therefore, when the wearer wears the leg, the leg may not be smoothly inserted into the leg hole opening. Further, since the leg hole openings on the rear waist region side are small, the absorbent article can be easily brought into close contact with the base portions of the legs on the hip side. Therefore, when the wearer moves the legs while wearing the garment, smooth movement of the legs may be hindered.

In the absorbent article of one aspect, the absorbent body has a longer length in the width direction at the front end edge of the rear waist region than at the rear end edge of the front waist region, and therefore the absorbent area in the rear waist region is easily ensured. As a result, leakage of excrement can be suppressed. In addition, the outer side portion of the absorbent main body is not joined to the outer cover at the front end portion of the rear waist region. Therefore, the outer body can move relative to the absorbent body at the front end portion of the rear waist region, and can deform so as to enlarge the leg hole openings. Therefore, when the wearer wears the garment, the wearer can easily insert the leg into the leg hole opening smoothly. Further, when the wearer moves the legs during wearing, the leg-surrounding opening can be deformed so as to be enlarged, and the wearer can move the legs smoothly.

According to a preferred aspect, it is preferable that a1 st width elastic member capable of expanding and contracting in the width direction is disposed in the rear non-joined region.

According to this aspect, the front end portion of the rear waistline region is contracted in the width direction by the 1 st width elastic member, and is easily fitted to the legs of the wearer. In this case, the front end portion of the rear waist region can be deformed so that the leg hole opening is enlarged, and the 1 st width elastic member does not excessively adhere to the legs due to contraction, and deterioration of the wearing feeling can be suppressed. The leg fitting performance and the leg movement easiness can be both appropriately satisfied.

According to a preferred aspect, the rear non-joined region extends rearward from a front end edge of the rear waist region, and the length of the rear non-joined region in the front-rear direction is preferably 5mm to 20 mm.

The range of 5mm to 20mm from the front end edge of the rear waist region toward the rear is a region in which a force is easily applied by the movement of the legs particularly when the legs are inserted or moved. Since the non-joined region is provided in this range, the wearer can easily insert the leg smoothly when wearing the garment, and the leg can be moved smoothly when wearing the garment.

According to a preferred aspect, the absorbent article further includes a side joining portion joining together an outer side portion of the front waistline region and an outer side portion of the rear waistline region, and the range in the front-rear direction of the rear non-joining region is a range extending rearward from an end edge on the crotch region side of the side joining portion by 30% of the entire range in the front-rear direction of the side joining portion.

The range extending from the end edge of the side joining portion on the crotch region side to 30% of the entire region of the side joining portion in the front-rear direction toward the rear is a region where a force is easily applied by the movement of the leg particularly when the leg is inserted or moved. Since the non-joined region is provided in this range, the wearer can easily and smoothly insert the leg when wearing the garment and smoothly move the leg when wearing the garment.

According to a preferred aspect, the absorbent main body has an absorbent core, a1 st rear joint region where the absorbent main body and the outer covering body of the rear waist region are joined is provided on the inner side in the width direction than the rear non-joint region, and a boundary between the rear non-joint region and the 1 st rear joint region is located on the outer side in the width direction than an outer edge of the absorbent core.

When the outer package body is pulled outward in the width direction during wearing, the absorbent body is pulled outward in the width direction by the outer package body. At this time, the outer edge of the absorbent core overlaps the 1 st rear joint region where the outer package of the rear waist region and the absorbent main body are joined. Therefore, when the outer covering body of the rear waistline region is pulled outward in the width direction during wearing, the outer edge of the absorbent core can be pulled outward in the width direction as well. The length of the absorbent core in the width direction in the rear waistline region can be easily secured, and leakage can be further suppressed.

According to a preferred aspect, a2 nd rear joint region where the absorbent body and the outer package body of the rear waist region are joined together is preferably provided on a rear side of the rear non-joint region.

The outer package body of the rear waist region is joined to the absorbent main body at the 2 nd rear joint region provided on the rear side of the rear non-joint region, whereby a problem that the outer package body of the rear waist region is curled up with respect to the absorbent main body or the absorbent main body falls inward in the width direction can be suppressed. The outer package body and the absorbent body can be appropriately brought into contact with the body of the wearer, and leakage can be further suppressed.

According to a preferred aspect, the outer package body of the rear waist region is stretchable in the width direction, and the length of the 2 nd rear bonding region in the width direction is longer than the length of the rear non-bonding region in the width direction.

The length in the width direction of the 2 nd rear joining region where the outer package body and the absorbent body are joined is longer than the length in the width direction of the rear non-joining region where the outer package body and the absorbent body are not joined, and therefore, the contraction in the width direction of the outer package body is easily transmitted to the absorbent body. Therefore, when the outer package is pulled outward in the width direction during wearing, the absorbent body can be pulled outward in the width direction. The length of the absorbent main body in the width direction can be easily secured also in the rear waistline region, and leakage can be further suppressed.

According to a preferred aspect, the outer covering body of the rear waist region is stretchable in the width direction, the absorbent main body includes front and rear elastic members that are disposed at an outer side portion of the absorbent main body and are stretchable in the front-rear direction, and an effective length portion of the front and rear elastic members overlaps the 2 nd rear joint region in the thickness direction in a plan view of the absorbent article.

The front and rear elastic members are disposed at the outer side of the absorbent main body and along the leg circumferences of the wearer. Since the effective length portions of the front and rear elastic members overlap the 2 nd rear joint region in the thickness direction, the contraction of the outer package in the width direction in the rear waist region and the contraction in the front-rear direction by the front and rear elastic members easily interlock with each other. The portion contracted by the front and rear elastic members is easily raised toward the wearer, and side leakage of excrement in the rear waist region can be suppressed.

According to a preferred aspect, it is preferable that a2 nd width elastic member capable of expanding and contracting in the width direction is disposed in a region where the effective length portion of the front and rear elastic members overlaps the 2 nd rear joining region.

Since the 2 nd width elastic member is disposed in a region where the effective length portion of the front and rear elastic members overlaps the 2 nd rear joining region, the contraction in the width direction by the 2 nd width elastic member and the contraction in the front and rear direction by the front and rear elastic members are easily interlocked. The portion contracted by the front and rear elastic members is easily raised toward the wearer's side, and side leakage of excrement in the rear waist region can be further suppressed.

According to a preferred aspect, the outer package body in the front waistline region is preferably stretchable in the width direction, the absorbent main body includes front and rear elastic members that are disposed at an outer side portion of the absorbent main body and are stretchable in the front-rear direction, and effective length portions of the front and rear elastic members overlap the front joining region in a thickness direction.

Since the effective length portions of the front and rear elastic members overlap the front joining region, the contraction of the outer package in the width direction at the front waistline region and the contraction in the front-rear direction by the front and rear elastic members are easily interlocked. The portion contracted by the front and rear elastic members is easily raised toward the wearer, and side leakage of excrement in the front waistline region can be suppressed.

According to a preferred aspect, it is preferable that a 3 rd width elastic member capable of expanding and contracting in the width direction is disposed in a region where the effective length portion of the front and rear elastic members overlaps the front joining region.

According to this aspect, since the 3 rd width elastic member is disposed in the region where the effective length portion of the front and rear elastic members overlaps the front joining region, the contraction in the width direction by the 3 rd width elastic member and the contraction in the front and rear direction by the front and rear elastic members easily interlock with each other. The portion contracted by the front and rear elastic members is more likely to stand toward the wearer's side, and side leakage of excrement can be further suppressed.

According to a preferred aspect, the length of the absorbent main body in the width direction at the front end edge of the rear waistline region is longer than the length of the absorbent main body in the width direction at the rear end edge of the front waistline region.

Generally, the distance between the bulged apexes of the wearer's buttocks is wider than the distance between the groins. Since the length of the absorbent main body in the width direction at the rear waistline region is longer than the length of the absorbent main body in the width direction at the front waistline region, it is easy to appropriately cover the bulge of the buttocks of the wearer. Side leakage can be suppressed by appropriately covering the buttocks.

According to a preferred aspect, the absorbent article further includes a side joint unit joining together an outer side portion of the front waistline region and an outer side portion of the rear waistline region, and the rear waistline region includes a hip cover extending to the crotch region side of the side joint unit.

The outer package is not joined to the outer side portion of the absorbent main body at the front end portion of the rear waistline region, and may be lifted up to the rear side by the movement of the legs of the wearer. By providing the hip cover, the hip can be continuously covered even when the front end portion of the rear waistline region is lifted up to the rear side, and side leakage from the hip can be suppressed.

(2) General structure of absorbent article

Hereinafter, an absorbent article according to an embodiment will be described with reference to the drawings. In the following description of the drawings, the same or similar parts are denoted by the same or similar reference numerals. However, the drawings are schematic, and it should be noted that the ratio of each dimension and the like are different from the actual ratio of each dimension and the like. Therefore, specific dimensions and the like should be determined with reference to the following description. In addition, the drawings may include portions having different dimensional relationships and ratios from each other.

The absorbent article may be of a belt type or a pants type. The absorbent article may be a disposable diaper, and is preferably a pants-type sanitary napkin. The absorbent article of embodiment 1 is a pants-type disposable diaper. Fig. 1 is a schematic plan view of a disposable diaper 10 according to the present embodiment. The schematic plan view shown in fig. 1 shows an extended state in which the absorbent article 10 is extended to a state in which no gathers are formed in a state in which the side joint sections 60 described later are unfolded.

The absorbent article 10 has a front-back direction L and a width direction W that are orthogonal to each other, the front-back direction L being defined by the direction extending toward the front and back of the body, in other words, the front-back direction L being the direction extending forward and backward in the absorbent article 10 after deployment, and the absorbent article 10 having a thickness direction T that is orthogonal to both the front-back direction L and the width direction W.

The absorbent article 10 has a front waistline region S1, a rear waistline region S2, and a crotch region S3. The front waistline region S1 is a region opposed to the front waistline (abdomen) of the wearer. The back waist region S2 is a region opposing the back waist (back) of the wearer. The crotch region S3 is a region located in the crotch of the wearer and disposed between the front waistline region S1 and the rear waistline region S2.

In the present embodiment, the absorbent article 10 preferably includes the outer package 15 and the absorbent body 40, the outer package 15 is preferably disposed at least in the front waistline region S1 and the rear waistline region S2 on the non-skin side of the absorbent body 40, the outer package 15 preferably includes the front outer package 20 and the rear outer package 30, the front outer package 20 is preferably disposed in the front waistline region S1, and the rear outer package 30 is preferably disposed in the rear waistline region S2 apart from the front outer package 20 in the front-rear direction L.

In the front waistline region S1 and the rear waistline region S2, the outer package 15 extends outward in the width direction W from the absorbent main body 40. In the crotch region S3, the absorbent main body 40 extends outward in the width direction W from the outer package 15. The crotch region-side boundary of the front waistline region S1 is the crotch region-side end edge of the region extending outward in the width direction W from the front outer package 20 with respect to the absorbent main body 40, and the crotch region-side boundary of the rear waistline region S2 is the crotch region-side end edge of the region extending outward in the width direction W from the rear outer package 30 with respect to the absorbent main body 40. In the absorbent article 10 of the present embodiment, the front side outer package 20 is disposed only in the front waistline region S1, the front end edge 20F of the front side outer package 20 corresponds to the front end edge S1F of the front waistline region S1, and the rear end edge 20R of the front side outer package 20 corresponds to the rear end edge S1R of the front waistline region S1. The rear side outer package 30 is disposed only in the rear waistline region S2, the front end edge 30F of the rear side outer package 30 corresponds to the front end edge S2F of the rear waistline region S2, and the rear end edge 30R of the rear side outer package 30 corresponds to the rear end edge S2R of the rear waistline region S2.

The front-side outer package 20 and the rear-side outer package 30 are preferably formed of a sheet such as a nonwoven fabric. The front outer package 20 and the rear outer package 30 preferably have an outer skin surface sheet 25 positioned on the skin side and an outer non-skin surface sheet 26 positioned on the non-skin surface side of the outer skin surface sheet 25, respectively.

It is preferable that the side joining sections 60 joining the outer side portion in the width direction W of the front waistline region S1 and the outer side portion in the width direction W of the rear waistline region S2 are provided, here, fig. 1 shows a state where the absorbent article 10 is unfolded after the joining at the side joining sections 60 is understood, it is preferable that the side joining sections 60 extend in the front-rear direction L at the front outer package body 20 and the rear outer package body 30, it is preferable that the rear waistline region S2 is provided with the hip cover 35 extending to the crotch region S3 side than the side joining sections 60, and the hip cover 35 is a part of the rear outer package body 30 and is a part extending to the crotch region S3 side than the side joining sections 60.

The front end portion and the rear end portion in the present invention are portions that occupy a certain range in the front-rear direction L including edges in the front-rear direction L, and the front end portion and the rear end portion are edges in the front-rear direction L.

As shown in fig. 4, in the absorbent article 10, a waist opening 71 through which the waist of the wearer passes and a pair of leg openings 72 into which the legs of the wearer are inserted are formed in a state in which the side joint sections 60 are formed. The waist opening 71 is preferably defined by the front end edge S1F of the front waist region S1 and the rear end edge S2R of the rear waist region S2. The leg hole openings 72 are preferably defined by the rear end edge 20R of the front outer package 20 extending outward in the width direction W from the absorbent main body 40, the front end edge 30F of the rear outer package 30 extending outward in the width direction W from the absorbent main body 40, and the outer edge 40E of the absorbent main body 40 in the crotch region S3.

The absorbent body 40 is disposed across the front outer package 20 and the rear outer package 30 on the skin surface side of the front outer package 20 and the rear outer package 30. That is, the absorbent body 40 extends over the front waistline region S1, the rear waistline region S2, and the crotch region S3. The absorbent main body 40 is preferably constituted independently of the front-side outer package 20 and the back-side outer package 30.

The length W402 of the absorbent body 40 in the width direction W at the front end edge S2F of the rear waistline region S2 is preferably longer than the length W401 of the absorbent body 40 in the width direction W at the rear end edge S1R of the front waistline region S1. Generally, the distance between the bulged apexes of the wearer's buttocks is wider than the distance between the groins. Since the length W402 in the width direction W of the absorbent body 40 at the front end edge S2F of the rear waistline region S2 is longer than the length W401 in the width direction W of the absorbent body 40 at the rear end edge S1R of the front waistline region S1, it is easy to appropriately cover the swell of the buttocks of the wearer. Side leakage can be suppressed by appropriately covering the buttocks. Further, since the length of the absorbent main body 40 in the width direction W at the rear end edge of the front waist region S1 is relatively short, the size of the leg hole openings on the front waist region side can be increased, and the legs can be moved forward and backward easily.

The absorbent main body 40 includes at least an absorbent core 50, the absorbent core 50 preferably contains, for example, comminuted pulp or superabsorbent polymer (SAP) or a mixture thereof, the absorbent core 50 is disposed at least in the crotch region S3. preferably, the absorbent core 50 extends in the front-to-rear direction L in a range from the front waistline region S1 to the rear waistline region S2. preferably, the absorbent core 50 is covered with a core wrap, and, furthermore, the absorbent main body 40 preferably has a main body skin sheet 41 on the skin-side surface of the absorbent core 50 and a main body non-skin sheet 42 on the non-skin-side surface of the absorbent core 50. the main body skin sheet 41 preferably covers the absorbent core 50 on the skin-side surface of the absorbent core 50. the main body non-skin sheet 42 preferably covers the absorbent core 50 on the non-skin-side surface of the absorbent core.

The main body skin surface sheet 41 is preferably formed of a liquid-permeable sheet such as a nonwoven fabric or an apertured plastic film. The main skin surface sheet 41 may be formed of 1 sheet. Instead, the main body skin surface sheet 41 may be formed of a laminate sheet in which a plurality of sheets are laminated.

The main body non-skin surface sheet 42 preferably includes a liquid impermeable sheet. The main body non-skin surface sheet 42 may be formed of 1 sheet. Instead, the main body non-skin surface sheet 42 may be formed of a laminate sheet in which a plurality of sheets are laminated with each other. In this case, at least 1 of the plurality of sheets is preferably liquid-impermeable.

The absorbent core 50 is disposed at least in the crotch region S3. preferably, the absorbent core 50 extends in the front-rear direction L from the front waistline region S1 to the rear waistline region S2. the absorbent core 50 may be covered with a core wrap.

The absorbent body 40 preferably has front and rear elastic members 65 arranged at the outer side of the absorbent body 40 and capable of stretching in the front-rear direction L, the front and rear elastic members 65 are preferably provided in plural at intervals in the width direction W, the front and rear elastic members 65 are preferably arranged at positions outside the absorbent core 50 in the width direction W, and are preferably arranged along the leg hole openings 72, the front and rear elastic members 65 are preferably formed of, for example, elastic threads capable of stretching in the front-rear direction L or elastic pieces capable of stretching in the front-rear direction L, alternatively, the front and rear elastic members 65 may be formed of side sheets themselves, the side sheets being formed of, for example, stretchable sheets, the front and rear elastic members 65 in the present embodiment are formed of elastic threads, and are arranged between the main body skin surface sheet 41 and the main body non-skin surface sheet 42 in the thickness direction T.

The front and rear elastic members 65 are disposed in an extended state at the outer side portion of the absorbent main body 40, and in the region where the front and rear elastic members 65 are disposed in an extended state, a force contracting in the front and rear direction L acts on the absorbent main body 40, and in the region where the front and rear elastic members 65 are not disposed in an extended state, a force contracting in the front and rear direction L does not act on the absorbent main body 40.

The front outer package 20 and the rear outer package 30 are preferably configured to be stretchable in the width direction W. The front outer package 20 and the rear outer package 30 may be configured to be stretchable by elastic members such as width elastic members described later, or may be stretchable by a stretchable outer skin-facing sheet 25 or a stretchable outer non-skin-facing sheet 26.

The width elastic members are preferably provided in the front waistline region S1 and the rear waistline region S2 so as to be stretchable in the width direction W, the width elastic members preferably have the 1 st width elastic member 61 and the 2 nd width elastic member 62 provided in the rear waistline region S2 and the 3 rd width elastic member 63 provided in the front waistline region S1, the 1 st width elastic member 61 is preferably disposed at a position more rearward than the 2 nd width elastic member 62 in the rear waistline region S2, the width elastic members are preferably provided at intervals in the front and rear directions L, the width elastic members are preferably formed of, for example, elastic threads stretchable in the width direction W or elastic sheets stretchable in the width direction W, the width elastic members may be formed of, for example, the absorbent main body 40 or the outer package 15 itself, the absorbent main body 40 or the outer package 15 may be formed of, the width elastic members may be provided in the absorbent main body 40 or the outer package 15, the 1 st width elastic member 61 and the 2 nd width elastic member may be provided in the outer package 30, the outer package 20 may be disposed between the skin elastic members in the width direction T and the outer package 20.

The outer package 15 and the absorbent body 40 configured as described above are joined together at the joint regions, and are not joined at the non-joint regions. A front joining region FA in which the outer portion of the absorbent body 40 is joined to the outer cover 15 is provided at the rear end of the front waistline region S1. The outer side portion of the absorbent main body 40 is joined to the outer cover 15 at the rear end portion of the front waistline region S1. Therefore, the outer cover 15 cannot move relative to the absorbent body 40 at the rear end portion of the front waistline region S1.

Fig. 4 and 5 are views schematically showing a state in which the absorbent article of the embodiment is worn, fig. 4 is a view schematically showing a state in which the legs are straightened, and fig. 5 is a view schematically showing a state in which the legs are bent, and in the rear end portion of the front waistline region S1 of the absorbent article of the embodiment, the outer package 15 is not easily moved relative to the absorbent body 40, and the angle α formed by the outer package 15 and the outer edge 40E of the absorbent body 40 is not easily changed, and therefore, when a force is applied to the rear end portion of the front waistline region S1 by the legs of the wearer or the like at the time of wearing, the absorbent body 40 of the front waistline region S1 is not easily deformed in the width direction W, and therefore, the length of the absorbent body 40 in the width direction W in the front waistline region S1 is easily ensured, and the absorption area on the front waistline region S1 side is easily ensured.

The front joining region FA is preferably provided in a region extending forward from the rear end edge of the front waistline region S1 and inward in the width direction W from the outer edge of the absorbent main body 40. The rear end edge of the front joining region FA may coincide with the rear end edge of the front waistline region S1 or may be spaced apart from the rear end edge of the front waistline region S1. The front end edge of the front joining region FA may coincide with the front end edge of the front waistline region S1 or may be spaced apart from the front end edge of the front waistline region S1. The front joining region FA preferably extends from one outer side edge to the other outer side edge of the absorbent main body 40. The outer edge of the front joining region FA may coincide with the outer edge of the absorbent body 40, or may be located in a range from the outer edge of the absorbent body 40 to a position 3mm to 5mm inward in the width direction from the outer edge of the absorbent body 40.

The rear non-bonded region NR where the outer portion of the absorbent body 40 is not bonded to the outer cover 15 is provided at the front end portion of the rear waistline region S2. The outer portion of the absorbent body 40 is not joined to the outer cover 15 at the front end portion of the rear waistline region S2. Therefore, the outer package 15 can move relative to the absorbent body 40 at the front end portion of the rear waist region S2.

The outer cover 15 is movable relative to the absorbent body 40 at the front end of the rear waistline region S2, and the angle β formed by the outer cover 15 and the outer edge 40E of the absorbent body 40 can be changed, the leg opening can be increased by deforming the angle β to be larger, the leg opening 72 can be increased by moving the absorbent body 40 inward in the width direction W at the rear non-joined region NR, and therefore, the leg opening 72 can be increased when the leg is inserted or moved, and the leg can be inserted or moved smoothly.

The rear non-bonded region NR is preferably provided in a region extending rearward from the front end edge 30F of the rear outer package 30 and extending inward in the width direction W from the outer side edge 40E of the absorbent main body 40, the front end edge of the rear non-bonded region NR may be aligned with the front end edge of the rear waistline region S2 or may be spaced apart from the front end edge of the rear waistline region S2, the rear end edge of the rear non-bonded region NR is preferably located inward of the rear waistline region S2 in the front-rear direction L, the rear non-bonded region NR preferably extends from one outer side edge of the absorbent main body 40 to the other outer side edge, and the outer side edge of the rear non-bonded region NR may be aligned with the outer side edge of the absorbent main body 40 or may be located inward of the absorbent main body 40 in the width direction by 3mm to 5mm from the outer side edge of the absorbent main body 40.

The inner edge of the rear non-joined region NR is preferably located at the same position as the outer edge of the absorbent main body 40 at the rear end edge of the front waistline region S1 in the width direction W or located inside the outer edge of the absorbent main body 40. Since the absorbent main body 40 and the outer package are not joined at the rear non-joined region NR, the rear non-joined region NR functions as a region where the legs can move. The inner edge of the rear non-bonded region NR is located at the same position as the outer edge of the absorbent body 40 at the rear end edge of the front waistline region S1 in the width direction W or located inside the outer edge of the absorbent body 40, so that the leg-movable regions can be secured at the leg opening portions on the front waistline region S1 side and the leg opening portions on the rear waistline region S2 side to be the same. The area covering the buttocks with the rear waistline region S2 can be ensured, and the regions ensuring the ease of movement of the legs and the ease of entry can be ensured to be the same in the front waistline region S1 and the rear waistline region S2.

It is preferable that the 1 st width elastic member 61 capable of expanding and contracting in the width direction W is disposed in the rear non-joined region NR. The 1 st width elastic member 61 may overlap the rear non-joined region NR in the thickness direction. By providing the 1 st width elastic member 61, the front end portion of the rear waist region S2 is contracted in the width direction W, and is easily fitted to the legs of the wearer. At this time, the front end portion of the rear waist region S2 is deformable so as to enlarge the leg hole openings 72. Therefore, excessive contact with the legs due to contraction of the 1 st width elastic member 61 can be suppressed, and deterioration of the wearing feeling can be suppressed. The leg fitting performance and the ease of leg movement can be appropriately satisfied. In order to ensure the fit to the legs, the 1 st width elastic member 61 preferably extends outward in the width direction W beyond the rear non-joined region NR.

The length of the rear non-joined region NR in the front-rear direction L is preferably 3mm or more, the length of the rear non-joined region NR in the front-rear direction L is preferably 3mm or more, whereby the ease of movement of the legs and the ease of entry of the legs can be improved, more preferably, the length of the rear non-joined region NR in the front-rear direction L is preferably 5mm or more and 20mm or less, a range of 5mm or more and 20mm or less from the front end edge of the rear waistline region S2 toward the rear is a region to which a force due to the movement of the legs is particularly more likely to be applied during leg insertion and leg movement, by making the length of the rear non-joined region NR in the front-rear direction L3 mm or more, the wearer can easily insert the legs during wearing and can more smoothly move the legs during wearing, and further preferably, the length of the rear non-joined region NR in the front-rear direction L is preferably 10mm or more.

The range of the front-rear direction L of the rear non-joined region NR is preferably a range extending from the end edge on the crotch region side of the side joined portion 60 toward 30% of the entire region of the front-rear direction L of the side joined portion 60, and the range extending from the end edge on the crotch region side of the side joined portion 60 toward 30% of the entire region of the front-rear direction L of the rear extension side joined portion 60 is a region where a force is easily applied by the movement of the leg particularly at the time of inserting the leg or at the time of moving the leg.

The hip cover 35 extending toward the crotch region S3 side with respect to the side joining portions 60 is preferably provided in the rear waistline region S2. The outer package 15 is not joined to the outer side portion of the absorbent main body 40 at the front end portion of the rear waistline region S2, and may be lifted rearward by the movement of the legs of the wearer. By providing the hip cover 35, even when the front end portion of the rear waistline region S2 is lifted up to the rear side, it is possible to continuously cover the hip and suppress side leakage from the hip.

The effective length portions 66 of the front and rear elastic members 65 preferably overlap the front joint region FA in the thickness direction, the front and rear elastic members 65 are disposed at the outer side portion of the absorbent main body 40 and are disposed along the leg circumference of the wearer, the effective length portions 66 of the front and rear elastic members 65 overlap the front joint region FA, and therefore contraction in the width direction W of the outer cover 15 is easily interlocked with contraction in the front-rear direction L by the front and rear elastic members 65, and the contracted portions by the front and rear elastic members 65 easily rise toward the wearer side, and lateral leakage of excrement on the front waist region side can be suppressed.

It is preferable that the 3 rd width elastic member 63 is disposed in the region where the effective length portion 66 of the front and rear elastic members 65 overlaps the front joining region FA, and since the 3 rd width elastic member is disposed in the region where the effective length portion 66 of the front and rear elastic members 65 overlaps the front joining region FA, the contraction in the width direction W by the 3 rd width elastic member and the contraction in the front-rear direction L by the front and rear elastic members 65 are easily interlocked, and the portion contracted by the front and rear elastic members 65 is more likely to stand toward the wearer side, and the side leakage of excrement on the front waist region side can be further suppressed.

The 1 st rear bonding region RA1 where the absorbent body 40 and the outer package 15 are bonded is preferably provided on the inner side in the width direction W than the rear non-bonding region NR. The boundary between the rear non-joined region NR and the 1 st rear joined region RA1 is preferably located further outward in the width direction W than the outer edge of the absorbent core 50. The 1 st rear joint region RA1 is preferably provided over the entire region in the width direction W of the absorbent core 50. When the outer package 15 is pulled outward in the width direction W during wearing, the absorbent body 40 is pulled outward in the width direction W by the outer package 15. At this time, the outer edge of the absorbent core 50 overlaps the 1 st rear joining region RA1 where the outer cover 15 and the absorbent body 40 are joined. Therefore, when the outer cover 15 is pulled outward in the width direction W during wearing, the outer edge of the absorbent core 50 can be pulled outward in the width direction W. The length of the absorbent main body in the width direction can be easily secured also in the rear waistline region, and leakage can be further suppressed.

The 2 nd rear bonding region RA2 where the absorbent main body 40 and the outer package 15 are bonded is preferably provided on the rear side of the rear non-bonding region NR. The 2 nd rear bonding region RA2 is provided in a region extending rearward from the front end edge of the rear non-bonding region NR and extending inward in the width direction W from the outer edge of the absorbent main body 40. The exterior body 15 and the absorbent body 40 are joined together at the 2 nd rear joining region RA2 provided on the rear side of the rear non-joining region NR, and therefore, the trouble that the exterior body 15 is curled with respect to the absorbent body 40 or the absorbent body 40 falls inward in the width direction W is suppressed, and it becomes easy to appropriately bring the exterior body 15 and the absorbent body 40 into contact with the body of the wearer. The outer edge of the 2 nd rear joint region RA2 may be coincident with the outer edge of the absorbent body 40 or may be located within a range from the outer edge of the absorbent body 40 to a position 3mm to 5mm inward in the width direction from the outer edge of the absorbent body 40.

The length in the width direction W of the 2 nd rear joint region RA2 is preferably longer than the length in the width direction W of the rear non-joint region NR. The inner edge of the 2 nd rear joint region RA2 preferably extends inward in the width direction W from the inner edge of the rear non-joint region NR. The length in the width direction W of the 2 nd rear bonding region RA2 where the outer package 15 and the absorbent body 40 are bonded is longer than the length in the width direction W of the rear non-bonding region NR where the outer package 15 and the absorbent body 40 are not bonded, and therefore, contraction in the width direction W of the outer package 15 is easily transmitted to the absorbent body 40. Therefore, even when the outer package 15 is pulled outward in the width direction W during wearing, the absorbent body 40 can be pulled outward in the width direction W, and the length of the absorbent body 40 in the width direction W can be ensured.

The effective length portions 66 of the front and rear elastic members 65 may overlap the 2 nd rear joint region RA2, the front and rear elastic members 65 are disposed at the outer side portion of the absorbent main body 40 and along the leg circumference of the wearer, the effective length portions 66 of the front and rear elastic members 65 overlap the 2 nd rear joint region RA2, and therefore contraction in the width direction W of the outer package 15 is easily interlocked with contraction in the front-rear direction L by the front and rear elastic members 65, the contracted portions by the front and rear elastic members 65 are easily raised toward the wearer side, and leakage at the rear waistline region side can be further suppressed.

It is preferable that the 2 nd width elastic member is disposed in the region where the effective length portion 66 of the front and rear elastic members 65 overlaps the 2 nd rear joint region RA2, since the 2 nd width elastic member is disposed in the region where the effective length portion 66 of the front and rear elastic members 65 overlaps the 2 nd rear joint region RA2, the contraction in the width direction W by the 2 nd width elastic member is easily interlocked with the contraction in the front-rear direction L by the front and rear elastic members 65, and the portion contracted by the front and rear elastic members 65 is more likely to stand toward the wearer side, and side leakage of excrement on the rear waist region side can be further suppressed.

The present invention has been described in detail with reference to the above embodiments, but it is obvious to those skilled in the art that the present invention is not limited to the embodiments described in the present specification. The present invention can be implemented in modified forms and modified forms without departing from the spirit and scope of the present invention defined by the claims. Therefore, the description of the present invention is for illustrative purposes and does not have any limiting meaning.

In the absorbent article of the modification, the front-side outer package 20 and the rear-side outer package 30 may be integrated with each other and may be provided in a range from the front waistline region S1 to the rear waistline region S2, the outer package of the modification preferably extends outward in the width direction W from the absorbent body 40 in the front waistline region S1 and the front waistline region S1 and is preferably located inward in the width direction W from the absorbent body 40 in the crotch region, and thus, in the absorbent article of the modification, the angle α formed between the absorbent body 40 and the outer package is less likely to change at the rear end of the front waistline region S1, so that the absorption area of the front waistline region S1 can be secured and leakage can be suppressed, and the angle β formed between the absorbent body 40 and the outer package is more likely to change at the front end of the rear waistline region, so that the thigh openings can be added to the rear waistline region to allow the legs to move smoothly.

Industrial applicability

An absorbent article which can suppress leakage and which is easy to insert the legs when worn and which is easy to move the legs when worn can be provided.

Description of the reference numerals

10. An absorbent article 15, an outer package 20, a front outer package 30, a rear outer package 40, an absorbent body 50, an absorbent core 60, side joint portions 61, a1 st width elastic member, 62, a2 nd width elastic member, 63, a 3 rd width elastic member, 65, front and rear elastic members, NR, rear non-joint regions, RA1, a1 st rear joint region, RA2, a2 nd rear joint region, FA, a front joint region, S1, a front waistline region, S2, a rear waistline region, S3, a crotch region, L, a front and rear direction, and W, a width direction.

Claims

1. An absorbent article having:

a front-back direction;

a width direction orthogonal to the front-rear direction;

a front waistline region;

a rear waist region;

a crotch region disposed between the front waistline region and the rear waistline region;

an absorbent main body disposed so as to straddle the crotch region, the front waistline region, and the rear waistline region; and

an outer cover body disposed at least in the front waistline region and the rear waistline region on a non-skin surface side of the absorbent main body, wherein,

a rear non-bonded region where the outer side portion of the absorbent main body is not bonded to the outer cover is provided at the front end portion of the rear waist region,

a front joining region where the outer side portion of the absorbent main body is joined to the outer package is provided at a rear end portion of the front waistline region.

2. An absorbent article having:

a front-back direction;

a width direction orthogonal to the front-rear direction;

a front waistline region;

a rear waist region;

an outer package body for the front waist region;

an outer package body of the rear waistline region; and

an absorbent main body having a plurality of absorbent layers,

the outer package of the front waist region is a front outer package disposed in the front waist region,

the outer package body of the rear waist region is a rear outer package body which is separated from the front outer package body in the front-rear direction and is disposed in the rear waist region,

the absorbent body is disposed so as to straddle the front side outer package and the rear side outer package on the skin surface side of the front side outer package and the skin surface side of the rear side outer package,

the length of the absorbent main body in the width direction at the front end edge of the rear waistline region is longer than the length of the absorbent main body in the width direction at the rear end edge of the front waistline region,

a rear non-bonded region where the outer side portion of the absorbent main body and the rear outer package are not bonded is provided at the front end portion of the rear waist region.

3. The absorbent article according to claim 1 or 2, wherein,

a1 st width elastic member that is stretchable in the width direction is disposed in the rear non-joined region.

4. The absorbent article according to any one of claims 1 to 3, wherein,

the rear non-joined region extends rearward from a front end edge of the rear waist region,

the length of the rear non-joined region in the front-rear direction is 5mm to 20 mm.

5. The absorbent article according to any one of claims 1 to 4, wherein,

the absorbent article further includes a side joining part joining the outer side part of the front waistline region and the outer side part of the back waistline region together,

the rear non-joined region has a range extending rearward from the end edge on the crotch region side of the side joined portion by 30% of the entire region in the front-rear direction of the side joined portion.

6. The absorbent article according to any one of claims 1 to 5, wherein,

the absorbent main body has an absorbent core,

a1 st rear joint region where the absorbent main body and the outer package of the rear waist region are joined together is provided on the inner side in the width direction than the rear non-joint region,

the boundary between the rear non-joined region and the 1 st rear joined region is located further outward in the width direction than the outer edge of the absorbent core.

7. The absorbent article according to any one of claims 1 to 6, wherein,

a2 nd rear joint region where the absorbent body and the outer package body of the rear waist region are joined together is provided on a rear side of the rear non-joint region.

8. The absorbent article of claim 7,

the outer package body of the rear waist region is stretchable in the width direction,

the 2 nd rear joint region has a length in the width direction longer than a length in the width direction of the rear non-joint region.

9. The absorbent article according to claim 7 or 8,

the absorbent main body has front and rear elastic members that are disposed at an outer side portion of the absorbent main body and are capable of expanding and contracting in the front-rear direction,

the effective length portions of the front and rear elastic members overlap the 2 nd rear joint region in the thickness direction when the absorbent article is viewed in plan.

10. The absorbent article of claim 9,

a2 nd width elastic member that is stretchable in the width direction is disposed in a region where the effective length portion of the front and rear elastic members overlaps the 2 nd rear joining region.

11. The absorbent article according to any one of claims 1 to 10, wherein,

the outer package body of the front waist region is stretchable in the width direction,

the effective length portions of the front and rear elastic members overlap the front joining region in the thickness direction.

12. The absorbent article of claim 11,

a 3 rd width elastic member that is stretchable in the width direction is disposed in a region where the effective length portion of the front and rear elastic members overlaps the front joining region.

13. The absorbent article according to any one of claims 1 to 12, wherein,

the absorbent main body has a length in the width direction at a front end edge of the rear waistline region that is longer than a length in the width direction at a rear end edge of the front waistline region.

14. The absorbent article according to any one of claims 1 to 13, wherein,

the rear waist region is provided with a hip cover extending to a position closer to the crotch region than the side joint portions.