JP3847680B2 - Diapers - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a diaper of a type in which an absorber is disposed around a crotch and a thigh around a wearer.
[0002]
[Prior art]
A type of diaper in which an absorbent body is fixed on a sheet (hereinafter, this type of diaper is simply referred to as a “diaper”) is mainly used for disposable purposes, but has a high leakage prevention capability. It is hoped that
[0003]
For this reason, in many diapers, a liquid-impervious or water-repellent three-dimensional guard is provided on the inner side in the crotch width direction than the portion that hits the wearer's neck.
[0004]
In addition, by providing a pair of left and right leg portions that extend toward the thigh side of the wearer's neck when worn and are arranged around the thigh portion, and forming leg gathers on these leg portions, There is also a diaper that suppresses the leakage of excrement (hereinafter referred to as “crotch leak”).
[0005]
Furthermore, JP 2001-346830 A describes a diaper provided with a second absorbent body (cushion material) applied to the inner side of the thigh of the wearer in addition to the absorbent body applied to the wearer's crotch. ing,
[0006]
[Problems to be solved by the invention]
However, the diaper is not always mounted at a fixed position, and often falls down from the position at the time of wearing due to the activity of the wearer or with the absorption of excrement.
[0007]
When the diaper slips down, there is a problem that a relatively large gap is generated between the wearer's thigh and the diaper, so that crotch leakage is likely to occur.
[0008]
Therefore, an object of the present invention is to provide a diaper in which crotch leakage hardly occurs even when slipping off.
[0009]
[Means for Solving the Problems]
The inventors of the present invention solved the above problem by providing a specific elastic member and a specific three-dimensional guard on the absorber.
[0010]
The present invention will be described below. In order to facilitate understanding of the present invention, reference numerals in the accompanying drawings are appended in parentheses, but the present invention is not limited to the illustrated embodiment.
[0011]
  In the first aspect of the present invention, a liquid-permeable top sheet (12), a liquid-impermeable leak-proof sheet (11), and an absorber disposed between the top sheet and the leak-proof sheet (10) and a pair of left and right leg portions (6A, 6B) that extend to the thigh (33) side of the wearer's collar when worn and are arranged around the thigh, The absorber has a first leg region (10a) that hangs on one of the pair of leg portions and a second leg region (10b) that hangs on the other of the pair of leg portions.And at least one pair of bending means (14a to 14f) for assisting bending of the first leg region and the second leg region when worn.A liquid-impermeable three-dimensional guard (15a, extending in a direction substantially parallel to the longitudinal direction (DL) of the absorber on both side edges in the crotch width direction (DC) of the absorber. 15b) and a crotch portion that overlaps with the first leg region or the second leg region and extends in a direction substantially parallel to the longitudinal direction of the absorbent body and contracts both side edges in the longitudinal direction. Elastic members (17a, 17b) are arranged, and when the solid guard is laid down on the absorber from the outside in the crotch width direction, the free end of the solid guard is The inner side in the crotch width direction than the outermost crotch elastic member among those on the same side as the solid guardAmong the bending means on the same side as the three-dimensional guard, on the innermost edge in the crotch width direction on the innermost bending means or outside the innermost edgeThe diaper located in the position is provided to solve the above problems.
[0012]
By providing the three-dimensional guard and the crotch elastic member, it is possible to press the first leg region and the second leg region on the inner side of the wearer's thigh when the diaper is worn at a normal position. When the diaper slips down and the distance between the diaper and the thigh increases, the lifting effect by the crotch elastic member can be expressed.
[0013]
This lifting effect is manifested by the contraction of the crotch elastic member, and when the lifting effect is manifested, the first leg region and the second leg region are lifted obliquely upward and close to the thigh side, so the diaper slipped off Even after this, the three-dimensional guard can be brought into contact with the thigh.
[0014]
As a result, even when the diaper slips off, it becomes difficult to form a gap between the inner side of the thigh of the wearer and the diaper, and the three-dimensional guard can suppress the flow or exudation of excrement. , Crotch leakage is suppressed.
[0015]
Such an operation and gain of the present invention will be clarified from the embodiments described below.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the diaper of the present invention will be specifically described with reference to the drawings.
<First Embodiment>
FIG. 1 is a perspective view schematically showing a first embodiment of the diaper of the present invention. The illustrated diaper 30 is a pants-type diaper. The pant-type diaper 30 includes a ventral side 1 disposed on the wearer's ventral side, a dorsal side 2 disposed on the dorsal side, and the ventral side 1 and the back. The crotch part 3 positioned between the side part 2 and the regions of the pair of left and right leg parts 6A and 6B that extend to the thigh side of the wearer's collar part and are arranged around the thigh part Can be divided.
[0017]
Both side edge portions of the ventral side portion 1 and the back side portion 2 are joined together to form side seal portions 4A and 4B, thereby forming a waist opening portion 5 and a pair of leg opening portions 6a and 6b. .
[0018]
A waist gather 7 including a plurality of waist elastic members 7a capable of reversibly changing the width of the waist opening 5 over the entire circumference of the waist is formed below the waist opening 5. A waistline gather 8 including a plurality of body elastic members 8a and 8b is formed under the waist gathers 7 over the entire circumference of the waistline.
[0019]
Moreover, leg gathers 9A are formed in the leg openings 6a over the entire circumference, and leg gathers 9B are formed in the leg openings 6b over the entire circumference.
[0020]
The leg gather 9A is formed by a first leg elastic member 9a fixed in the vicinity of the leg opening 6a, and the leg gather 9B is formed by a second leg elastic member 9b fixed in the vicinity of the leg opening 6b. Has been. Each of the first leg elastic member 9a and the second leg elastic member 9b is disposed from a region that hits the wearer's body when worn to a region that hits the collar.
[0021]
The region from the outermost first leg elastic body 9a to the leg opening 6a corresponds to the above-described leg portion 6A, and the region from the outermost second leg elastic member 9b to the leg opening 6b is the above-described leg. It corresponds to the part 6B.
[0022]
In order to absorb a wearer's excrement, the absorber 10 which reaches | attains the back side part 2 via the crotch part 3 from the abdominal side part 1 is arrange | positioned inside the underpants type diaper 30.
[0023]
  The absorber 10 includes a first leg region 10a that hangs on the leg portion 6A and a second leg region 10b that hangs on the leg portion 6B. In FIG. 1, these areas 10a and 10b are smudged.And this absorber 10 is provided with at least 1 pair of bending means 14a-14f (it mentions later for details) which assists the bending of these 1st leg area | regions and the said 2nd leg area | region at the time of wear.
[0024]
On each side edge of the absorbent body 10 in the crotch width direction, liquid-impermeable first three-dimensional guards 15A and 15B extending in a direction substantially parallel to the longitudinal direction of the absorbent body 10 (in FIG. Only the first three-dimensional guard 15B appears.). The first three-dimensional guard 15A is disposed on the side edge on the leg portion 6A side, and the first three-dimensional guard 15B is disposed on the side edge on the leg portion 6B side.
[0025]
The term “three-dimensional guard” as used herein refers to a liquid impermeable or water-repellent sheet that can suppress excretion permeation, and is set up to have a height with respect to the absorbent body 10. It is formed and has a role to prevent excrement from moving at the standing part.
[0026]
Four crotch elastic members 17a or four crotch elastic members 17b are provided above the outer layer sheet 20 on both side edges in the crotch width direction of the absorbent body 10. The crotch elastic member 17a is disposed above the outer layer sheet 20 side of the side edge on the leg 6A side, and the crotch elastic member 17b is disposed above the outer layer sheet 20 side of the side edge on the leg 6B side. Has been.
[0027]
2 and 3 schematically show a planar arrangement of each member constituting the pants-type diaper 30. FIG. FIG. 2 shows the side seal portions 4A and 4B of the pant-type diaper 30 separated from each other and developed under a tension state (a state in which each elastic member described below is stretched) as viewed from the side in contact with the wearer's skin. FIG. 3 is a view when the one shown in FIG. 2 is viewed from the back side.
[0028]
As shown in FIG. 2, the outer layer sheet 20 in the pants-type diaper 30 has a shape in which a bay portion for forming leg openings 6 a and 6 b (see FIG. 1) is formed at the center of both long sides of a rectangle. Yes. A liquid-impermeable leak-proof sheet (not shown) is fixed to the central portion of the outer layer sheet 20, and the absorbent body 10 is disposed thereon, and a liquid-permeable surface sheet (see FIG. Not shown.)
[0029]
The absorber 10 has the 1st leg area | region 10a and the 2nd leg area | region 10b as mentioned above, and the longitudinal direction DL of the said absorber 10 is substantially corresponded with the longitudinal direction of the outer layer sheet | seat 20. As shown in FIG. . In FIG. 2, smudging is applied to these regions 10a and 10b for easy understanding.
[0030]
A first three-dimensional guard 15A having solid guard sheets 15a, 15b and elastic members (not shown) fixed to one ends of the sheets 15a, 15b on the side edge of the absorbent body 10 in the crotch width direction DC. Alternatively, the first three-dimensional guard 15B is fixed.
[0031]
Note that, in FIG. 2, in order to make the positions of the elastic members constituting the first three-dimensional guards 15 </ b> A and 15 </ b> B easier to understand, the corresponding portions are indicated by curves. The location also extends linearly.
[0032]
As shown in FIGS. 2 and 3, a plurality of waist elastic bodies 21 for forming the waist gathers 7 (see FIG. 1) are fixed to both ends of the outer layer sheet 20 in the longitudinal direction DL, respectively. A plurality of body elastic bodies are formed on the inner side in the longitudinal direction of the outer layer sheet 20 relative to the waist elastic body 21.
[0033]
Each waist elastic body 21 crosses the outer layer sheet 20 in the crotch width direction DC. These waist elastic bodies 21 are joined to predetermined waist elastic bodies 21 by the side seal portions 4A and 4B (see FIG. 1) to form a plurality of waist elastic members 7a having an annular shape. In the example shown in FIG. 1, three waist elastic members 7a are formed.
[0034]
Among the body elastic bodies for forming the waistline gather 8, a plurality of outer bodies (hereinafter, these body elastic bodies are referred to as “body elastic bodies 23a”) each of the outer layer sheets 20 are crotched. It crosses in the width direction DC. These body elastic bodies 23a are joined to the predetermined body elastic bodies 23a by the side seal portions 4A and 4B to form a plurality of body elastic members 8a having an annular shape. In the example shown in FIG. 1, four waist elastic members 8a are formed.
[0035]
The body elastic bodies (hereinafter, these body elastic bodies are referred to as “body elastic bodies 23 b”) fixed to the inside of the body elastic bodies 23 a to form the waistline gathers 8 are the absorbers 10. It has the area | region which overlaps on planar view, and is cut | disconnected in the center part of this area | region. In FIG. 2, a region that is not cut out of the region of the body elastic body 23 b that overlaps the absorber 10 in a plan view is indicated by a broken line, and a portion that is cut off is omitted. Also in FIG. 3, the illustration of the above-mentioned cut portions is omitted.
[0036]
These body elastic bodies 23b are joined to the predetermined body elastic bodies 23b by the side seal portions 4A and 4B to form a plurality of body elastic members 8b having an arc shape. In the example shown in FIG. 1, eight body elastic members 8b are formed.
[0037]
In addition, it can replace with the trunk | drum elastic body 23b, and the elastic body which has the same shape as the trunk | drum elastic body 23a can also be used.
[0038]
Leg gathers 9A and 9B are formed in the vicinity of the two bay entrances provided in the outer sheet 20 to form the leg openings 6a and 6b (see FIG. 1) so as to substantially follow the bay entrance. A plurality of leg elastic bodies 25 are fixed to each other.
[0039]
Each leg elastic body 25 includes a first leg elastic body 25a disposed from the abdomen 1 to the crotch 3, and a second leg elastic 25b disposed from the back side 2 to the crotch 3. However, they are joined to each other at the crotch portion 3.
[0040]
One end of each leg elastic body 25 for forming the leg gather 9A is joined to the other end of the leg seal body 4A at the side seal part 4A to form a plurality of first leg elastic members 9a having a substantially annular shape. One end of each leg elastic body 25 for forming the leg gathers 9B is joined to the other end of the leg seal body 4B at the other end of the leg seal 9B to form a plurality of second leg elastic members 9b having a substantially annular shape. In the example shown in FIG. 1, three first leg elastic members 9a or three second leg elastic members 9b are provided in the vicinity of the boundary between the leg portions 6A, 6B and the ventral side portion 1, the back side portion 2, and the crotch portion 3. Is formed.
[0041]
As shown in FIG. 3, in the pant-type diaper 30, the above-described crotch elastic member 17 a, above the outer layer sheet 20 side of each side edge in the crotch width direction of the absorbent body 10, separately from each elastic member described above 17b is provided. Each crotch elastic member 17a, 17b extends in a direction substantially parallel to the longitudinal direction DL of the absorbent body 10 while overlapping the first leg region 10a or the second leg region 10b, and the absorbent body 10 extends in the longitudinal direction. It can be contracted in a direction substantially parallel to DL. These crotch elastic members 17a and 17b cross the first leg region 10a or the second leg region 10b in the longitudinal direction DL, and at least the crotch region 3A in the pant-type diaper 30 (see FIGS. 2 and 3). It is preferable that it is longitudinally cut.
[0042]
Here, the “inseam area” in the present specification means two areas at the center when the diaper held under tension is divided into four in the longitudinal direction DL. For the pants-type diaper, as shown in FIG. 2 or FIG. 3, the side seals on both sides are peeled off and held in a tension state, and the center 2 when divided into four in the longitudinal direction DL under this state. Means one area.
[0043]
Each of the crotch elastic members 17a intersects with each of the leg elastic bodies 25 arranged on the same side, and is joined to the leg elastic bodies 25 at these intersections. Similarly, each of the crotch elastic members 17b intersects with each of the leg elastic bodies 25 arranged on the same side, and is joined to the leg elastic bodies 25 at these intersections.
[0044]
4A is a schematic cross-sectional view taken along the line IV-IV shown in FIG. 2, and schematically shows the arrangement of each member in the thickness direction of the pant-type diaper 30.
[0045]
As shown in the figure, the outer layer sheet 20 in the pants-type diaper 30 is a sheet that defines the outer shape of the diaper, and is formed of one or more sheet materials. In the illustrated example, the outer layer sheet 20 is configured by the first sheet 20a and the second sheet 20b that is disposed outside and integrated with the first sheet 20a.
[0046]
As the 1st sheet | seat 20a and the 2nd sheet | seat 20b, the nonwoven fabric which has air permeability is used, for example. If necessary, another sheet can be stacked on the outer side of the outer layer sheet 20.
[0047]
The leak-proof sheet 11 is fixed on the first sheet 20 a, the top sheet 12 is disposed above the first sheet 20 a, and the absorber 10 is disposed between the leak-proof sheet 11 and the top sheet 12. Moreover, the crotch width direction side edge part of each of the leak-proof sheet | seat 11 and the surface sheet 12 is coat | covered with side sheet | seat 13A, 13B. Although not shown in FIG. 4A, the longitudinal side edges of each of the leak-proof sheet 11 and the top sheet 12 are also covered with the side sheets.
[0048]
In FIG. 4 (A), these sheets are drawn apart from each other for easy understanding. Actually, however, the first sheet 20a and the leak-proof sheet 11, and the leak-proof sheet 11 and the side sheets are drawn. 13A and 13B, and the surface sheet 12 and the side sheets 13A and 13B are fixed to each other in an overlapping region when seen in a plan view. Similarly, the absorber 10 is in contact with at least the leak-proof sheet 11.
[0049]
As the leak-proof sheet 11, a liquid-impermeable fill is used. Specifically, a liquid-impermeable film made of a thermoplastic resin conventionally used as a leak-proof sheet for absorbent articles such as a polyethylene film and a polypropylene film is used. Preferably, a vapor permeable (moisture permeable) film obtained by blending inorganic fine particles made of calcium carbonate, titanium oxide or the like with the above thermoplastic resin and stretching and molding is used.
[0050]
As the top sheet 12, a liquid-permeable sheet, for example, a woven fabric made of natural fibers, a non-woven fabric made of synthetic fibers, or an opening film made of a thermoplastic resin is used. Considering the touch when dried and wet, and the economical efficiency, it is preferable to use a nonwoven fabric made of synthetic fibers.
[0051]
As the nonwoven fabric comprising the synthetic fibers, wet or dry synthetic fiber nonwoven fabrics conventionally used as a surface material for absorbent articles, specifically polyethylene fibers, polypropylene fibers, polyester fibers, polyethylene-polypropylene composite fibers, polyethylene -Wet or dry nonwoven fabrics produced using synthetic fibers such as polyester composite fibers, polyvinyl alcohol fibers, rayon and the like.
[0052]
Considering the excretion absorbability, the top sheet 12 is preferably subjected to a hydrophilic treatment. The hydrophilic treatment can be performed, for example, by applying a surfactant usually used in the art.
[0053]
As the side sheets 13A and 13B, liquid-impermeable or water-repellent sheets usually used for disposable diapers can be used. For example, the undrawn yarn obtained by melt spinning a thermoplastic resin, or the drawn yarn obtained by drawing the undrawn yarn is subjected to a crimping treatment as necessary, and then the short fibers obtained by cutting are bonded together. Use non-woven fabrics that are point-bonded by heat or adhesives, or entangled with water, needles, etc., that is, non-woven fabrics formed by a wet method, dry method, span lace method, or spunbond method. Can do. Moreover, the nonwoven fabric directly shape | molded by the melt blown or the spun bond molding method can also be used.
[0054]
As the undrawn yarn or drawn yarn, a single fiber or a composite fiber formed from polyethylene (PE), polypropylene (PP), polyethylene terephthalate (PET) or the like can be used. As the conjugate fiber, a sheath-core conjugate fiber, a parallel conjugate fiber, or a splittable conjugate fiber that is divided into a plurality of fibers by heat or external force can be used.
[0055]
As the sheath-core type composite fiber, a polyolefin system in which the combination of the core component and the sheath component is PET / PE, PP / PE, or PET / PP (the former represents the core component and the latter represents the sheath component). A sheath core type composite fiber is mentioned.
[0056]
Among non-woven fabrics made of composite fibers, non-woven fabrics made of sheath-core type composite fibers using high elastic resin as the core and low elasticity and / or low melting point resin as the sheath are excellent in texture and elasticity, and are also productive It is particularly suitable because of its high safety and low cost.
[0057]
As the absorbent body 10, for example, defibrated pulp is used as a main material and a combination of this and a water-absorbing polymer, or a mixture of a thermoplastic resin, cellulose fiber, and a water-absorbing polymer is used. If necessary, these materials may be used, for example, as a general absorbent paper, a hydrophilic-treated low basis weight nonwoven fabric (spunbond nonwoven fabric, SMS (spunbond-meltblown-spunbond) nonwoven fabric, SMMS (spunbond-meltblown) -Melt blown-spun bond) wrapped from above and below by non-woven fabric etc.
[0058]
The first three-dimensional guards 15A and 15B described above are fixed on the absorbent body 10 (surface sheet 12). In addition, the above-described various elastic bodies or elastic members are fixed to the outer layer sheet 20 and the absorbent body 10.
[0059]
The first three-dimensional guards 15A and 15B include a rectangular liquid-impermeable three-dimensional guard sheet 15a and 15b, and elastic bodies 27a and 27b fixed to side edges of the three-dimensional guard sheets 15a and 15b. Have.
[0060]
For example, the first three-dimensional guards 15A and 15B fix the elastic bodies 27a and 27b along one long side of the three-dimensional guard sheets 15a and 15b, and the remaining long sides of the three-dimensional guard sheets 15a and 15b. The two short sides can be formed by adhering to the top sheet 12 or the side sheets 13A and 13B at least on the absorber 10.
[0061]
Of the various elastic bodies or elastic members described above, the crotch elastic members 17a and 17b are preferably fixed on the inner surface or the outer surface of the leak-proof sheet 11, but can also be fixed to the outer layer sheet 20. is there. In the example shown in FIG. 4A, crotch elastic members 17 a and 17 b are fixed on the inner surface of the leak-proof sheet 11.
[0062]
Each of the leg elastic bodies 25 is fixed to the sheets 20a and 20b between the first sheet 20a and the second sheet 20b, for example. Although not appearing in FIG. 4A, the waist elastic body 21 and the body elastic bodies 23a and 23b are also interposed between the first sheet 20a and the second sheet 20b, for example, like the leg elastic body 25. These are fixed to the sheets 20a and 20b.
[0063]
When the pant-type diaper 30 having such a structure is deployed as described above and held under tension, the first three-dimensional guards 15A and 15B are viewed from the outside in the crotch width direction as shown in FIG. They fall on the absorber 10.
[0064]
When the elastic members 27a and 27b shift from the tensioned state to the relaxed state, the first three-dimensional guards 15A and 15B rise as shown in FIG. 4B. As shown in FIG. 4B, the first three-dimensional guards 15A and 15B preferably project obliquely from the outer side to the inner side in the crotch width direction DC in a natural state.
[0065]
Each of the elastic bodies or elastic members constituting the pant-type diaper 30 is made of, for example, thread rubber, flat rubber, elastic film, etc., and any elastic body or elastic member tries to fix the elastic body or elastic member. In a state where the sheet to be held is kept in a tension state, the sheet is fixed to a predetermined portion of the sheet under the stretched state.
[0066]
Therefore, in the pants-type diaper 30 when not worn, any elastic body or elastic member is in a relaxed state as compared to when it is fixed to the sheet. As a result, the waist gathers 7, the waistline gathers 8, the leg gathers 9A and 9B, and the first three-dimensional guards 15A and 15B shown in FIG. 1 are formed.
[0067]
When the pants-type diaper 30 is worn, as shown in FIG. 5 (A), the first leg region 10a and the second leg region 10b in the absorbent body 10 are bent toward the outer layer sheet 20 side, and the thigh of the wearer It hits 33. Therefore, even if excrement flows down or oozes around the leg before being absorbed by the absorbent body 10 in the crotch 35 of the wearer, the excrement can be absorbed in the thigh 33 of the wearer.
[0068]
The width of the pants-type diaper 30 when the pants-type diaper 30 slips downward from the position at the time of wearing due to the activities of the wearer or due to the absorption of excrement, compared to when the pants-type diaper 30 is worn at the regular position. The crotch width becomes narrow, and the first leg elastic member 9a, the second leg elastic member 9b, and the crotch elastic members 17a and 17b contract. In addition, the elastic members 27a and 27b (see FIG. 4A or 4B) constituting the first three-dimensional guards 15A and 15B contract.
[0069]
The gap between the thigh 33 and the first leg region 10a or the second leg region 10b is expanded by the slipping of the pant-type diaper 30, but at the same time, the crotch elastic member 17a is contracted by the crotch elastic members 17a and 17b. 17b, and the first leg region 10a and the second leg region 10b are lifted obliquely upward and approach the thigh 33 side as shown by an arrow A in FIG. .
[0070]
As the first three-dimensional guards 15A and 15B are raised by the contraction of the elastic members 27a and 27b, and the first leg region 10a and the second leg region 10b are closer to the thigh 33 due to the lifting effect described above, FIG. As shown in FIG. 5, the gap can be filled with the first three-dimensional guards 15A and 15B.
[0071]
Therefore, even when the pant-type diaper 30 slips down, a gap is hardly generated between the pant-type diaper 30 and the thigh 33, and the first three-dimensional guard 15A that is in contact with the thigh while standing up, Since it becomes possible to suppress the flow of excrement by 15B, the occurrence of crotch leakage is suppressed.
[0072]
Since it is dangerous if the wearer's toes are caught on the first three-dimensional guards 15A, 15B when worn, the height of the first three-dimensional guards 15A, 15B is preferably within a range of approximately 3 mm to 40 mm. More preferably, it is within a range of approximately 3 mm to 20 mm. When the heights of the first three-dimensional guards 15A and 15B are selected in this way, the first leg region 10a and the second leg region 10b can be easily brought into close contact with the wearer's thigh 33.
[0073]
In order to suppress crotch leakage with the first three-dimensional guards 15A and 15B as described above, the arrangement positions of the crotch elastic members 17a and 17b can be selected as follows.
[0074]
That is, when the first three-dimensional guards 15A and 15B are laid down on the absorbent body 10 from the outside in the crotch width direction, the free ends of the first three-dimensional guards 15A and 15B are in the crotch elastic members 17a and 17b. Arrangement position of the crotch elastic members 17a, 17b so that it is located inside the crotch width direction DC with respect to the outermost crotch elastic members 17a, 17b among those on the same side as the first three-dimensional guards 15A, 15B Can be selected. Second Embodiment
Next, the diaper of 2nd Embodiment of this invention is demonstrated, referring FIG. 6 (A) and FIG. 6 (B).
[0075]
FIG. 6 (A) shows the diaper 50 of the second embodiment held in a tension state, as viewed from the side that becomes the outer surface when worn, and FIG. 6 (B) is shown in FIG. 6 (A). It is the schematic of the VI-VI line cross section.
[0076]
The illustrated diaper 50 is an unfolded diaper, (1) the outer layer sheet is not provided, and the outer shape is defined by the leakproof sheet, the top sheet, and the side sheet, and (2) one of the longitudinal directions DL. Two hook members 40 each having a large number of hooks that function as male members are arranged on the left and right sides at the end, and a nonwoven fabric 42 that functions as a female member is fixed to the hook member 40 at the other end. And (3) two auxiliary elastic members 44 are arranged outside the crotch elastic member 17a, and two auxiliary elastic members 44 are arranged outside the crotch elastic member 15b. This is very different from the pants-type diaper 30 of the first embodiment.
[0077]
Since the other configuration is the same as the configuration of the pant-type diaper 30, among the components shown in FIG. 6 (A) or FIG. 6 (B), FIG. 1 to FIG. 3, FIG. 4 (A), or FIG. Components common to those shown in (B) are denoted by the same reference numerals as those used in FIGS. 1 to 3, 4 (A), or 4 (B), and the description thereof is omitted. .
[0078]
As shown in FIG. 6 (B), the leak-proof sheet 11 and the side sheets 13A and 13B constituting the absorber 10 are located in the crotch width direction DC more than the leak-proof sheet 11 and the side sheets 13A and 13B in the pant-type diaper 30. The crotch width direction side edges of the side sheets 13 </ b> A and 13 </ b> B are joined to the crotch width direction side edges of the leakproof sheet 11. Further, these sheets 11, 13A, 13B are also extended in the longitudinal direction DL.
[0079]
The auxiliary elastic member 44 can be fixed between the side sheets 13A and 13B and the leak-proof sheet 11, for example, as shown in FIG. 6B. These auxiliary elastic members 44 enhance the shape retention of the deployable diaper 50 and improve the adhesion of the regions 10a and 10b to the inner side of the thigh of the wearer. Moreover, even when excrement overflows from the side edge portion of the absorbent body 10, leakage of the excrement out of the diaper 50 is prevented.
[0080]
Also in the unfolded diaper 50 having such a configuration, the diaper 50 includes the first leg region 10a, the second leg region 10b, the leg elastic body 25, the first three-dimensional guards 15A and 15B, and the crotch elastic member 17a, Since it has 17b, generation | occurrence | production of a crotch leak can be suppressed similarly to the underpants type diaper 30 demonstrated using FIGS.
[0081]
Although the diaper of the first and second embodiments has been described above, the crotch leakage prevention function by the combination of the first three-dimensional guards 15A and 15B and the crotch elastic members 17a and 17b is generally a pant with a high activity level of the wearer. It is particularly preferable to apply it to the mold diaper.
[0082]
Regardless of whether the diaper of the present invention is of the pants type or the unfolded type, when the leg elastic body 25 is disposed on the diaper, the leg elastic body 25 crosses the absorbent body 10 in the crotch width direction DC. It is preferable that the configuration is not. When the leg elastic body 25 crosses the absorbent body 10 in the crotch width direction DC, the absorbent body 10 is contracted inward by the leg elastic body 25 in the crotch width direction DC, and the first leg region 10a and the first leg region 10a. There is a risk that the adhesion of the two-leg region 10b to the thigh 33 is lowered.
[0083]
  Also, the first leg region 10a and the second leg region 10b can be easily bent outward when worn.,in frontAt least one pair of bending means for assisting the bending described above14a-14f are provided.
[0084]
Specific examples of the bending means include the following means (1) to (8).
(1) As shown in FIG. 7, a region 14 a in which the absorber 10 is not substantially present is formed in a strip shape, a line shape, a slit shape, or the like at a desired location between the leak-proof sheet 11 and the topsheet 12.
(2) As shown in FIG. 8, the low basic weight area | region 14b whose basic weight is lower than the periphery is formed in the desired location of the absorber 10. FIG.
(3) As shown in FIG. 9, the thin part 14c is formed in the desired location of the absorber 10. FIG.
(4) As shown in FIG. 10, the low-rigidity material 14 d is disposed at a desired location in the absorber 10.
(5) As shown in FIG. 11, a narrow emboss line 14 e is formed at a desired location of the absorber 10.
(6) An elastic body such as the leg elastic body 25 already described is disposed in the vicinity of the inner edge of the first leg region 10a or the second leg region 10b in the crotch width direction.
(7) As shown in FIG. 12, the desired portion of the absorbent body 10 is folded back to the back surface (the surface that is the outside when worn), and the folded portion isAdhesive 14fIs applied in the crotch width direction DC, or by fusing the part.
[0085]
7 to 12 that are the same as those shown in FIG. 4B are assigned the same reference numerals as those used in FIG. 4B. The description is omitted.
[0086]
When the bending means described above is provided, when the first three-dimensional guards 15A and 15B are laid down on the absorber 10 from the outside of the crotch width direction DC, the free ends of the first three-dimensional guards 15A and 15B are Among the bending means that are on the same side as the first three-dimensional guards 15A and 15B, on the innermost edge in the crotch width direction DC in the innermost bending means, or in the crotch width direction DC from the innermost edge It is preferable to select the position of the bending means so as to be located outside.
[0087]
The bending means (7) can also be applied to the outer layer sheet 20.
[0088]
In both the pants-type and the unfolded-type diapers, the first leg region 10a and the second leg region 10a obtained with reference to the side edge in the crotch width direction of the tensioned absorbent body 10 are used in order to ensure practical absorbability. The maximum approach depth L1 (see FIG. 2) in plan view to the absorbent body 10 of each leg region 10b is set within a range of approximately 1/6 to 1/3 of the width of the absorbent body 10 under tension. Is preferable, and it is still more preferable to set it to about 1/4. Specifically, it is preferable to select within a range of approximately 10 to 100 mm according to the size of the absorbent body 10.
[0089]
Each of the first leg elastic member 9a and the second leg elastic member 9b is divided into two elastic bodies spaced apart from each other in the crotch part 3, that is, the first elastic body and the spine arranged on the ventral side part 1. When configured by the second elastic body disposed on the side portion 2, the point where the elastic force acts in the longitudinal direction DL for each elastic body is considered, and the crotch portion 3 in the first elastic body among the points. It is also possible to define the maximum depth L1 by imagining a line connecting the deepest point on the side and the deepest point on the crotch 3 side in the second elastic body.
[0090]
Moreover, in order to sufficiently suppress crotch leakage, the length of the first leg region 10a and the second leg region 10b in the absorbent body 10 is set within a range of approximately 1/5 to 2/3 of the maximum length of the diaper. It is preferable to make it within a range of about 1/4 to 1/2. Specifically, it is preferable to select within a range of approximately 140 to 600 mm depending on the size of the absorbent body 10.
[0091]
By setting the length L2 to the above-described length, it is possible to ensure a sufficient contact area between the first leg region 10a or the second leg region 10b and the wearer's thigh to suppress crotch leakage. It becomes easy.
[0092]
Here, the length of the first leg region 10a and the second leg region 10b is the crotch in the absorbent body 10 when the diaper is held under tension as shown in FIG. 2, FIG. 3, or FIG. It means the length measured at the side edge in the width direction DC.
[0093]
As shown in FIG. 4 (A) or FIG. 4 (B), the elastic member 29 can be fixed to the inner side surface or the outer side surface of the side sheets 13A and 13B as necessary. In the illustrated example, the elastic member 29 is fixed to the inner side surfaces of the side sheets 13A and 13B.
[0094]
By providing this elastic member 29, the shape retention of the diaper can be improved, and the adhesion of the absorbent body 10 to the wearer's thigh can be further improved. As the elastic member 29, for example, thread rubber, flat rubber, elastic film, or the like can be used, and the length thereof is preferably equal to or shorter than the length in the longitudinal direction of the absorbent body 10.
[0095]
As shown in FIG. 13, the first three-dimensional guards 15A and 15B can be integrated with the side sheets 13A and 13B. In this case, for example, the first three-dimensional guards 15A and 15B have the side sheets 13A and 13B wider than the widths of the side sheets 13A and 13B in the state shown in FIG. 4A or FIG. It is formed by fixing elastic members 27a and 27b to one end. Of the structural members shown in FIG. 13, those that are functionally common to the structural members shown in FIG. 4B are given the same reference numerals as those used in FIG. Description is omitted.
[0096]
As shown in FIG. 14, second solid guards 60 </ b> A and 60 </ b> B may be provided above both side edges in the crotch width direction of the region of the absorbent body 10 that is applied to the wearer's crotch. These 2nd solid guards 60A and 60B can be set as the structure similar to 1st solid guard 15A and 15B shown, for example in FIG.4 (B). Reference numerals 60a and 60b in the figure indicate solid guard sheets, and reference numerals 61a and 61b indicate elastic members.
[0097]
Of the structural members shown in FIG. 14, those functionally common to the structural members shown in FIG. 4B are given the same reference numerals as those used in FIG. Description is omitted.
[0098]
By providing the second solid guards 60A and 60B, it is possible to further suppress crotch leakage.
[0099]
While the present invention has been described in connection with the most practical and preferred embodiments at the present time, the present invention is not limited to the embodiments disclosed herein. The invention can be changed as appropriate without departing from the spirit or concept of the invention which can be read from the claims and the entire specification, and diapers accompanying such changes should also be understood as being included in the technical scope of the present invention. I must.
[0100]
【The invention's effect】
As described above, according to the present invention, it is possible to provide a diaper in which crotch leakage is unlikely to occur even when slipped off. It is possible to reduce the burden on parents and caregivers of diaper wearers.
[Brief description of the drawings]
FIG. 1 is a perspective view schematically showing a diaper of a first embodiment.
FIG. 2 is a plan view schematically showing a state in which the side seal of the pant-type diaper shown in FIG. 1 is peeled and deployed under tension, as viewed from the side in contact with the wearer's skin. is there.
FIG. 3 is a plan view schematically showing a state in which the side seal of the pant-type diaper shown in FIG. 1 is peeled and developed under tension, when viewed from the side that becomes the outer surface when worn. is there.
4A is a schematic view of a section taken along line IV-IV shown in FIG. 2, and FIG. 4B is a sectional view schematically showing a state in which the first three-dimensional guard is raised. is there.
FIG. 5 (A) is a cross-sectional view schematically showing a state of the absorbent body and the first three-dimensional guard when a pant-type diaper is worn at a regular position, and FIG. It is sectional drawing which shows roughly the state of an absorber and a 1st solid guard when a underpants type diaper slips down from the regular position.
FIG. 6 is a plan view schematically showing a state when the diaper of the second embodiment is held in a tension state, as viewed from the side that becomes the outer surface when worn.
FIG. 7 is a cross-sectional view schematically showing an example of bending means.
FIG. 8 is a cross-sectional view schematically showing another example of bending means.
FIG. 9 is a sectional view schematically showing still another example of the bending means.
FIG. 10 is a cross-sectional view schematically showing still another example of bending means.
FIG. 11 is a sectional view schematically showing still another example of bending means.
FIG. 12 is a sectional view schematically showing still another example of bending means.
FIG. 13 is a cross-sectional view schematically showing another configuration example of the three-dimensional guard.
FIG. 14 is a cross-sectional view schematically showing a diaper having two types of solid guards.
[Explanation of symbols]
3A Inseam area
6A, 6B Leg part
10 Absorber
10a First leg area
10b Second leg region
11 Surface sheet
12 Leak-proof sheet
14 Absorbent
15A, 15B First solid guard
17a, 17b Crotch elastic member
14a-14f bending means
30 pants-type diapers
50 unfolding diapers

Claims (4)

A liquid-permeable top sheet, a liquid-impermeable leak-proof sheet, an absorbent body disposed between the top sheet and the leak-proof sheet, and a thigh rather than a wearer's neck when worn A pair of left and right leg portions that extend to the side and are arranged around the thigh, and the absorber is a first leg region that hangs on one of the pair of leg portions, and the other of the pair of leg portions A diaper having at least one pair of bending means for assisting bending of the first leg region and the second leg region when worn ,
On both side edges in the crotch width direction of the absorbent body, a liquid-impermeable solid guard extending in a direction substantially parallel to the longitudinal direction of the absorbent body, and the first leg region or the second leg region A crotch elastic member extending in a direction substantially parallel to the longitudinal direction of the absorbent body while being overlapped and capable of contracting the side edges in the longitudinal direction;
When the three-dimensional guard is laid down on the absorber from the outside in the crotch width direction, the free end of the three-dimensional guard is the most among the crotch elastic members on the same side as the three-dimensional guard. On the innermost edge in the crotch width direction in the innermost bending means among the bending means on the inner side in the crotch width direction than the outer crotch elastic member and on the same side as the solid guard among the bending means Or a diaper located outside the innermost edge .   The diaper according to claim 1, wherein the three-dimensional guard projects obliquely from the outer side in the crotch width direction toward the inner side in the crotch width direction when worn.   The diaper according to claim 1 or 2, wherein the crotch elastic member crosses the first leg region or the second leg region in the longitudinal direction. The diaper according to any one of claims 1 to 3 , wherein a region located on the stomach side of the wearer at the time of wearing and a region located on the back side of the wearer at the time of wearing are joined together in advance on both sides.

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