CN113873977B - Underpants type disposable diaper - Google Patents
Underpants type disposable diaper Download PDFInfo
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- CN113873977B CN113873977B CN202080037203.1A CN202080037203A CN113873977B CN 113873977 B CN113873977 B CN 113873977B CN 202080037203 A CN202080037203 A CN 202080037203A CN 113873977 B CN113873977 B CN 113873977B
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- Prior art keywords
- sweat
- skin
- sheet
- abdomen
- waistline
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
- A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
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- Health & Medical Sciences (AREA)
- Epidemiology (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Absorbent Articles And Supports Therefor (AREA)
Abstract
A pants-type disposable diaper (1) is provided with an absorbent body (10) and waistline units (20, 30), wherein the waistline units (20, 30) are provided with elastic members (23, 33) which extend and retract in the left-right direction, skin side sheets (21, 31) which are arranged on the skin sides of the elastic members (23, 33), and non-skin side sheets (22, 32) which are arranged on the non-skin sides of the elastic members (23, 33), wherein the waistline units (20, 30) are provided with a weak sweat-absorbing part (60) and a sweat-absorbing part (50) which absorbs sweat of a wearer more easily than the weak sweat-absorbing part (60), and an opening (40) is provided in at least one of the skin side sheets (21, 31) and the non-skin side sheets (22, 32).
Description
Technical Field
The present invention relates to a pants-type disposable diaper.
Background
Conventionally, as a pant-type absorbent article, a pant-type disposable diaper has been known. Such underpants type disposable diapers generally have high matching properties, and thus may cause problems such as stuffiness due to perspiration during wearing and skin rash. In order to solve such a problem, a disposable diaper has been proposed in which a sweat absorbing sheet for absorbing sweat of a wearer is provided in a waistline portion. For example, patent document 1 discloses a disposable diaper having breathable sweat-absorbent sheets provided on at least one of side edges of front and rear waistline regions of the diaper.
Prior art literature
Patent literature
Patent document 1: japanese patent laid-open No. 2000-189454
Disclosure of Invention
Problems to be solved by the invention
In the pants-type diaper of patent document 1, the breathable absorbent sheet 9 is provided with a plurality of openings 16, thereby improving the breathability of the region where the absorbent sheet 9 is disposed. However, since the rigidity of the sweat-absorbent sheet 9 itself is reduced by providing the openings 16 in the sweat-absorbent sheet 9, the sweat-absorbent sheet 9 also contracts when the front and rear waist regions 3 and 4 contract, and a plurality of wrinkles may be formed on the surface. In this case, the sweat-absorbent sheet 9 is less likely to contact the skin of the wearer in a planar shape (curved shape), and the sweat-absorbent function of the sweat-absorbent sheet 9 may be impaired.
The present invention has been made in view of the above-described conventional problems, and an object thereof is to provide a pants-type disposable diaper having excellent sweat absorbing performance.
Means for solving the problems
The main invention for achieving the above object is a pants-type disposable diaper having a vertical direction and a lateral direction intersecting each other, the pants-type disposable diaper comprising: an absorbent body; and a waistline portion including an elastic member that stretches in the left-right direction, a skin-side sheet that is disposed on the skin side of the elastic member, and a non-skin-side sheet that is disposed on the non-skin side of the elastic member, wherein the waistline portion includes a weak sweat-absorbent portion and a sweat-absorbent portion that absorbs sweat of the wearer more easily than the weak sweat-absorbent portion, and an opening is provided in at least one of the skin-side sheet and the non-skin-side sheet.
Other features of the present invention will become apparent from the description of the present specification and the accompanying drawings.
ADVANTAGEOUS EFFECTS OF INVENTION
According to the present invention, a pants-type disposable diaper having excellent sweat absorbing performance can be provided.
Drawings
Fig. 1 is a schematic perspective view of a pants-type disposable diaper 1 (diaper 1).
Fig. 2 is a top view of the diaper 1 in an unfolded and extended state.
Fig. 3 is a cross-sectional view taken along line I-I of fig. 2.
Fig. 4A is a schematic cross-sectional view of the pants-shaped diaper 1 in a state of being elongated in the left-right direction when viewed from the upper side in the up-down direction (waist opening BH side).
Fig. 4B is a schematic cross-sectional view of the pants-shaped diaper 1 in which the extended state of fig. 4A is released and the diaper is in a natural state when viewed from the upper side (waist opening BH side) in the vertical direction.
Fig. 5 is a plan view of a modification of the diaper 1 in an expanded and extended state.
Fig. 6 is a top view of the diaper 2 in an unfolded and extended state.
Detailed Description
At least the following matters will be apparent from the description of the present specification and drawings.
A pants-type disposable diaper having a vertical direction and a lateral direction intersecting each other, the pants-type disposable diaper comprising: an absorbent body; and a waistline portion including an elastic member that stretches in the left-right direction, a skin-side sheet that is disposed on the skin side of the elastic member, and a non-skin-side sheet that is disposed on the non-skin side of the elastic member, wherein the waistline portion includes a weak sweat-absorbent portion and a sweat-absorbent portion that absorbs sweat of the wearer more easily than the weak sweat-absorbent portion, and an opening is provided in at least one of the skin-side sheet and the non-skin-side sheet.
According to such a pants-type disposable diaper, since the weak sweat-absorbent portion is provided with the opening, the stiffness is lower than that of the sweat-absorbent portion, and the weak sweat-absorbent portion is liable to be greatly contracted in the lateral direction when the diaper is worn. Further, the weak sweat absorbing portion is contracted, so that the sweat absorbing portion is easily extended in the lateral direction relatively, and the planar shape is easily maintained. Therefore, the sweat absorbing part is matched with the skin of the wearer in terms of surface, and sweat of the wearer can be easily and effectively absorbed. As a result, a pants-type disposable diaper having excellent sweat absorbing performance can be realized.
In the pants-type disposable diaper, the waistline portion preferably has a abdomen-side waistline portion and a back-side waistline portion, and the sweat-absorbent portion is preferably provided in either one of the abdomen-side waistline portion and the back-side waistline portion.
According to such a pants-type disposable diaper, the contraction amount of the abdomen-side waistline portion and the back-side waistline portion, which is not provided with the sweat-absorbing portion, becomes large, and the contraction amount of the abdomen-side waistline portion and the back-side waistline portion, which is provided with the sweat-absorbing portion, becomes small. Therefore, the portion provided with the sweat absorbing portion is more easily extended, and the sweat absorbing portion is easily maintained in a planar shape. This improves the sweat absorption of the diaper.
In the pants-type disposable diaper, the waistline portion preferably includes a abdomen-side waistline portion and a back-side waistline portion, and the sweat-absorbent portion is preferably provided in both of the abdomen-side waistline portion and the back-side waistline portion.
According to such a pants-type disposable diaper, since the sweat-absorbent portions are provided on both sides of the back-side waistline portion and the abdomen-side waistline portion, sweat-absorbent performance is improved on both sides of the back and abdomen, and sweat-absorbent performance can be improved as a whole of the diaper.
In the pants-type disposable diaper, it is preferable that the area of the sweat absorbing portion provided in the back waistline portion is larger than the area of the sweat absorbing portion provided in the abdomen waistline portion.
According to such a pants-type disposable diaper, the area of the sweat absorbing portion on the back side is larger than the area of the sweat absorbing portion on the abdomen side, so that the area having high rigidity on the back side is easily increased as compared with the area on the abdomen side. Therefore, the back side sweat absorbing portion is less likely to shrink than the abdomen side sweat absorbing portion, and is easily maintained in a planar shape, so that it is easy to match the skin of the wearer with the surface. This improves the sweat absorption of the diaper.
In this pants-type disposable diaper, it is preferable that the sweat absorbing portion provided in the back waistline portion has a higher rigidity than the sweat absorbing portion provided in the abdomen waistline portion.
According to such a pants-type disposable diaper, the sweat absorbing portion on the back side is less likely to contract than the sweat absorbing portion on the abdomen side. Therefore, the sweat absorbing portion is easily maintained in a planar shape on the back side, and is easily matched with the skin of the wearer in a face-to-face manner. This improves the sweat absorption of the diaper.
In this pants-type disposable diaper, it is preferable that the waistline portion has a abdomen-side waistline portion and a back-side waistline portion, the abdomen-side waistline portion and the back-side waistline portion are connected to each other by a pair of side fastening portions provided at both ends in the lateral direction, and the weak sweat-absorbing portion is provided between the sweat-absorbing portion and the side fastening portions in the lateral direction.
According to such a pants-type disposable diaper, the weak sweat-absorbent portion located between the sweat-absorbent portion and the side fastening portion in the lateral direction is contracted, so that the sweat-absorbent portion is stretched and extended outward in the lateral direction (toward the side Fang Kagu portion side), and the planar shape is easily maintained. Thus, the sweat absorbing part can be easily matched with the skin of the wearer in terms of surface when the diaper is worn, and the sweat absorbing performance of the diaper can be improved.
In the pants-type disposable diaper, it is preferable that the area of the opening provided per unit area of the weak sweat-absorbent portion is larger than the area of the opening provided per unit area of the sweat-absorbent portion.
According to such a pants-type disposable diaper, the weak sweat-absorbent portion has a lower rigidity than the sweat-absorbent portion, and the contraction amount of the weak sweat-absorbent portion is larger than the contraction amount of the sweat-absorbent portion when the diaper is contracted. Therefore, the sweat absorbing portion is easily extended in the left-right direction relatively, and the planar shape is easily maintained. Thus, the sweat absorbing part can be easily matched with the skin of the wearer in terms of surface when the diaper is worn, and the sweat absorbing performance of the diaper can be improved.
In this pants-type disposable diaper, the sweat absorbing portion is preferably not provided with the opening.
According to such a pants-type disposable diaper, the rigidity of the sweat-absorbent portion provided with no opening is higher than that of the weak sweat-absorbent portion provided with an opening, and if the weak sweat-absorbent portion contracts, the sweat-absorbent portion is relatively stretched, and the planar shape is more easily maintained. This can further improve the sweat absorbing performance of the diaper.
In this pants-type disposable diaper, it is preferable that the sweat-absorbent portion is provided with a breathable sweat-absorbent sheet provided separately from the skin-side sheet and the non-skin-side sheet.
According to such a pants-type disposable diaper, the material rigidity of the sweat-absorbent portion is higher than the material rigidity of the weak sweat-absorbent portion in accordance with the amount of lamination of the breathable sweat-absorbent sheets separately provided to the sheet members (the skin side sheet and the non-skin side sheet) constituting the back-side waist portion. Therefore, the sweat absorbing portion is easily maintained in a planar shape, and the sweat absorbing performance of the diaper can be further improved by matching the skin of the wearer with the surface.
In the pants-type disposable diaper, the opening is preferably a through hole penetrating the skin-side sheet and the non-skin-side sheet in the thickness direction.
According to such a pants-type disposable diaper, the weak sweat-absorbent portion becomes lower in rigidity than when the opening is a non-through hole, and the weak sweat-absorbent portion is liable to shrink. Therefore, the sweat absorbing portion is easily extended in the left-right direction relatively, and the planar shape is easily maintained. This can further improve the sweat absorbing performance of the diaper.
In this pants-type disposable diaper, the opening is preferably provided in a region above the sweat absorbing portion in the up-down direction.
According to such a pants-type disposable diaper, the rigidity of the upper end portion of the waistline portion becomes low, and when the waistline portion is contracted, irregularities (wrinkles) in the thickness direction are easily formed in the upper end portion. Therefore, heat or moisture easily moves through the gap between the skin and the wrinkles of the wearer, and the generation of stuffiness or skin rash due to perspiration can be suppressed.
In this pants-type disposable diaper, it is preferable that the opening is not provided in a region where the absorbent main body overlaps the waistline portion.
According to such a pants-type disposable diaper, since the absorbent main body and the opening portion are not overlapped, there is a fear that excrement such as urine generated by a user may leak to the outside through the opening portion.
In this pants-type disposable diaper, it is preferable that the waistline portion has a planar stretchable sheet stretchable at least in the left-right direction.
According to such a pants-type disposable diaper, the waist portion is less likely to be wrinkled in the up-down direction by providing the stretchable sheet having a predetermined width in the up-down direction. Thus, good matching can be achieved. In addition, since the waistline portion is difficult to wrinkle, the opening portion is less likely to be blocked, and the generation of stuffiness and rash during wearing of the diaper can be suppressed.
In the pants-type disposable diaper, the waistline portion preferably has a abdomen-side waistline portion and a back-side waistline portion, the sweat-absorbent portion is preferably provided on either one of the abdomen-side waistline portion and the back-side waistline portion, the stretchable sheet is preferably provided on the other side, and the stretchable sheet is preferably provided with an opening.
According to such a pants-type disposable diaper, the opening is provided on the other side of the abdomen-side waistline portion and the back-side waistline portion to reduce the rigidity and stress of the stretchable sheet, thereby forming wrinkles (irregularities) and promoting evaporation of sweat. Further, the sweat absorbing portion is easily extended relatively by contraction of the stretchable sheet on one side, and sweat absorbing property is improved.
Description of the embodiments
Hereinafter, as a pants-type disposable diaper according to the present invention, a pants-type disposable diaper 1 for infants (hereinafter also referred to as "diaper 1") will be described as an embodiment. However, the pants-type absorbent article according to the present invention is not limited to disposable diapers for infants, and may be used as disposable diapers for adults.
Structure of underpants type disposable diaper 1
Fig. 1 is a schematic perspective view of a pants-type disposable diaper 1 (diaper 1). Fig. 2 is a top view of the diaper 1 in an unfolded and extended state. Fig. 3 is a cross-sectional view taken along line I-I of fig. 2.
In the pants-type state shown in fig. 1, the diaper 1 has a top-bottom direction and a left-right direction intersecting each other, and a waist opening BH and a pair of leg hole openings LH are formed. In the vertical direction, the waist opening BH side is set as the upper side, and the crotch side is set as the lower side. As shown in fig. 3, the direction in which the materials constituting the diaper 1 are laminated is referred to as the thickness direction, the side in the thickness direction that contacts the wearer is referred to as the skin side, and the side that does not contact the wearer is referred to as the non-skin side.
The diaper 1 has an absorbent main body 10, an abdomen-side waist portion 20, and a back-side waist portion 30, which are three members having a rectangular shape in plan view. The abdomen-side waist 20 is a portion that abuts against the abdomen of the wearer, and the back-side waist 30 is a portion that abuts against the back of the wearer.
In the diaper 1 in the developed state shown in fig. 2, the abdomen-side waistline portion 20 and the back-side waistline portion 30 are arranged such that their longitudinal directions are along the right-left direction of the diaper 1. An end portion on one side in the longitudinal direction of the absorbent body 10 is disposed in a central portion of the abdomen-side waistline portion 20 in the left-right direction, and an end portion on the other side in the longitudinal direction of the absorbent body 10 is disposed in a central portion of the back-side waistline portion 30 in the left-right direction.
The absorbent body 10 is folded in half at the substantially center in the longitudinal direction of the diaper 1 so that the longitudinal direction of the absorbent body 10 extends along the vertical direction of the diaper 1, and both side ends of the abdomen-side waistline portion 20 and both side ends of the back-side waistline portion 30 in the left-right direction of the diaper 1 are joined by heat welding, ultrasonic welding, or the like to form a pair of side fastening portions 5, thereby forming the diaper 1 in the pants-like state shown in fig. 1.
As shown in fig. 3, the absorbent main body 10 includes: an absorber 11; a liquid-permeable top sheet 12 disposed on the skin side of the absorber 11; a liquid-impermeable back sheet 13 disposed on the non-skin side of the absorber 11; and an outer sheet 14 disposed on the non-skin side with respect to the back sheet 13.
The absorbent body 11 includes an absorbent core 11A for absorbing and retaining excreted liquid such as urine, and a liquid-permeable core wrap sheet 11B covering the absorbent core 11A. As the absorbent core 11A, a structure in which liquid absorbent fibers such as pulp containing a superabsorbent polymer (SAP) are molded into a predetermined shape is exemplified. The top sheet 12 is formed of, for example, a nonwoven fabric such as a hot air nonwoven fabric or a spun-bonded nonwoven fabric. The back sheet 13 is a film having liquid impermeability and air permeability, such as polyethylene or polypropylene. The outer sheet 14 is formed of, for example, the same nonwoven fabric as the top sheet 12.
Side pieces 15 are provided at both ends of the outer sheet 14 in the left-right direction. The side panels 15 extend substantially outward in the left-right direction than the outer sheet 14, and are folded back inward with the outer ends 15es, 15es as folding back positions to form side cuffs SF of the diaper 1.
As shown in fig. 1, the side cuffs SF are provided along the leg hole openings LH so as to extend outward in the left-right direction. In the present embodiment, a plurality of leg elastic members 17, 17 … (see fig. 2) made of rubber threads or the like are fixed between the side panels 15, 15 folded in the thickness direction in a state of being elongated in the up-down direction (longitudinal direction) with a predetermined interval therebetween in the left-right direction (width direction). This imparts stretchability to the side cuffs SF in the up-down direction (longitudinal direction of the absorbent main body 10). That is, stretchability is imparted along the leg hole opening LH.
Further, a pair of leakage preventing wall portions 70, 70 are provided on both sides of the absorber 11 in the left-right direction. At the inner end portions of the leakage preventing wall portion 70 in the left-right direction, 1 or more leakage preventing wall elastic members 18 (see fig. 2) made of rubber threads or the like are fixed in a state of being elongated in the up-down direction (longitudinal direction). When the diaper 1 is worn, the leakage preventing wall portion 70 stands up from both sides of the absorber 11 in the lateral direction toward the skin side of the wearer due to the stretchability of the leakage preventing wall elastic member 18, thereby suppressing leakage (side leakage) of excrement toward the outside of the absorbent main body 10.
As shown in fig. 3, the abdomen-side waistline portion 20 (the back-side waistline portion 30) includes: a skin-side sheet (21) (31); a non-skin-side sheet 22 (32) laminated on the skin-side sheet 21 (31); a plurality of filiform elastic members 23 (33).
The non-skin side sheet 22 (32) is disposed on the non-skin side of the skin side sheet 21 (31). The skin-side sheets 21 and 31 and the non-skin-side sheets 22 and 32 are disposed on the non-skin side of the absorbent body 10. The upper end portions 221, 321 of the non-skin-side sheets 22, 32 are folded back at the upper end 20eu of the abdomen-side waist belt 20 and the upper end 30eu of the back-side waist belt 30, respectively, downward in the up-down direction, and cover the longitudinal end portions of the absorbent main body 10 from the skin side (see fig. 3).
The skin side sheets 21 and 31 and the non-skin side sheets 22 and 32 are non-stretchable sheets having substantially no stretchability in the lateral direction. As the skin side sheets 21, 31 and the non-skin side sheets 22, 32, SMS nonwoven fabric (spunbond/meltblown/spunbond nonwoven fabric), spunbond nonwoven fabric, hot air nonwoven fabric, plastic sheet, apertured plastic sheet, laminate sheet thereof, and the like can be used.
The plurality of thread-like elastic members 23 (33) are arranged in the vertical direction between the skin-side sheet 21 (31) and the non-skin-side sheet 22 (32), and are fixed in an elongated state in the lateral direction. Thus, the abdomen-side waistline portion 20 and the back-side waistline portion 30 stretch in the left-right direction to match the waistline of the wearer. Examples of the thread-like elastic members 23 and 33 include thread-like elastic members (so-called rubber threads) such as rubber and spandex fibers.
The filiform elastic member 33 is disposed from the upper end portion to the lower end portion of the back waistline portion 30. On the other hand, the threadlike elastic member 23 is not disposed at the upper end portion of the abdomen-side waist belt 20, and instead, a planar (band-like) stretchable sheet 24 is disposed to stretch in the left-right direction.
By disposing the stretchable sheet 24 without disposing the threadlike elastic member 23 at the upper end portion of the abdomen-side waist belt 20 in this manner, the upper end portion of the abdomen-side waist belt 20 is brought into close surface contact with the skin of the wearer. Therefore, local tightening can be suppressed, and linear marks due to the rubber thread can be hardly left. Particularly, since the abdomen of the infant is inflated with a beep, the tightening of the abdomen-side waist area 20 is preferably suppressed by using the stretchable sheet 24.
Further, the expansion easiness of the waist opening BH when the diaper 1 is worn is greatly affected by the expansion/contraction force of the upper end portions of the waist portions 20 and 30. The stretchable sheet 24 has a property of being easily stretched from a natural state and being hardly contracted from an stretched state. Therefore, by disposing the stretchable sheet 24 at the upper end portion of the abdomen-side waist portion 20, the waist opening BH is easily widened when the diaper 1 is worn, and tightening of the abdomen after fitting the waist portions 20, 30 to the wearer can be prevented.
For the stretchable sheet 24, for example, a sheet having a mass of 10 to 40g/m can be used 2 More preferably 15 to 30g/m 2 A stretch fibrous nonwoven fabric produced by various known methods, such as a spunbonded nonwoven fabric, a hot air nonwoven fabric, and a needle punched nonwoven fabric, which are made of elastic fibers. In which elastic fibers are made of thermoplastic elastomer or rubber, etc., particularly thermoplastic elastomer is used as the materialIn the case of the raw material, melt spinning by an extruder can be performed similarly to a usual thermoplastic resin, and the fiber thus obtained is easily hot-melted, and is suitable as a stretchable fiber nonwoven fabric. Examples of the thermoplastic elastomer include styrene-based elastomer, olefin-based elastomer, polyester-based elastomer, and polyurethane-based elastomer. These may be used singly or in combination of two or more. The stretchable sheet may exhibit elasticity in at least the left-right direction, or may exhibit elasticity in two or more directions. The stretch ratio of the stretchable sheet 24 in the lateral direction is preferably about 1.2 to 3.0 times.
Further, in the region where the stretchable sheet 24 is provided, a plurality of openings 40, 40 … penetrating the stretchable sheet 24 and the abdomen-side waist area 20 (the skin-side sheet 21 and the non-skin-side sheet 22) in the thickness direction are provided. The opening 40 has a function as a vent hole in the abdomen-side waist area 20. Thus, sweat or heat of the wearer is easily evaporated from the opening 40 to the outside of the diaper 1 when the diaper 1 is worn, and the stuffiness of the abdomen-side waistline portion 20 and the rash of the skin of the wearer can be effectively suppressed. In particular, the upper end portion of the abdomen-side waist portion 20 is easily matched with the abdomen of the wearer over a wide range by providing the stretchable sheet 24, so that sufficient breathability is ensured, thereby avoiding discomfort to the wearer.
The opening 40 provided in the abdomen-side waist area 20 may be formed as a circular hole having a diameter of about 1.5mm, for example, but the shape and size of the opening 40 are not limited thereto and may be appropriately changed. However, from the viewpoint of securing air permeability, it is preferable that the opening 40 is a hole having a certain area in a natural state, except for a linear slit such as a slit.
The "natural state" is a state when the diaper 1 is left for a predetermined period of time. For example, after taking out the diaper 1 in the product state from the package, the abdomen-side waistline portion 20 and the back-side waistline portion 30 are stretched to the left and right sides, the waistline portions 20 and 30 are set to an "extended state", and after the extended state is continued for about 15 to 30 seconds, the stretching of the diaper 1 is released and the diaper is placed on a flat surface such as a table. Then, the state where such a plane was laid flat for 5 minutes was set as a natural state.
The opening 40 does not necessarily have to penetrate the abdomen-side waist area 20 in the thickness direction. For example, the opening 40 may be provided in either the skin-side sheet 21 or the non-skin-side sheet 22. If the opening 40 is provided in at least one of the skin-side sheet 21 and the non-skin-side sheet 22, the air permeability is higher than in the case where the opening 40 is not provided at all, and thus the wearer is less likely to feel uncomfortable.
In addition, a sweat absorbing portion 50 that absorbs sweat of the wearer more easily than other regions is provided in a predetermined region of the back waistline portion 30.
Regarding the sweat absorbing part 50
As shown in the oblique line portions of fig. 2 and 3, the sweat absorbing portion 50 is provided in a predetermined region on the skin side of the back waistline portion 30, and absorbs sweat of the wearer more easily than other regions other than the sweat absorbing portion 50. By providing the sweat absorbing portion 50 on the skin side surface of the back waistline portion 30, sweat is easily absorbed in the back waistline region of the wearer, in which the amount of sweat is easily increased, when the diaper 1 is worn, and thus, stuffiness and rash can be easily suppressed.
The sweat-absorbent portion 50 in the present embodiment is formed by joining, for example, a breathable sweat-absorbent sheet 51 to the skin side surface of the back waistline portion 30, the breathable sweat-absorbent sheet 51 being a sheet member formed of an upper layer containing at least 20 wt% hydrophilic fibers and a lower layer of hydrophobic fibers integrally laminated therewith. However, the breathable sweat-absorbent sheet 51 may be a sheet member having a single layer structure containing at least 20 wt% of hydrophilic fibers.
As the hydrophilic fibers contained in the breathable absorbent sheet 51, cellulose fibers such as rayon, and sweat-absorbent polyester fibers having hydrophilized fiber surfaces, and the like can be used. As the hydrophobic fibers other than the hydrophilic fibers, polypropylene, polyester, polyethylene-polyester composite fibers, and fibers obtained by crimping the composite fibers can be used. The sheet form of the breathable sweat-absorbent sheet 51 is not particularly limited, and may be 10 to 100g/m 2 Nonwoven fabrics of the type of spunlaced, needle punching, thermal bonding, spunbond, meltblown, chemical bonding, etc. having a weight per unit area of 0.1 to 10d denier.
The breathable sweat-absorbent sheet 51 may be a member having a different color from the skin-side sheet 31 or the non-skin-side sheet 32 constituting the back-side waist section 30. For example, when the skin-side sheet 31 is white, the breathable sweat-absorbent sheet 51 is made of cyan. In this way, it is easy for the user (the wearer of the diaper 1 or the person performing the wearing operation) to visually recognize that the breathable sweat-absorbent sheet 51 is provided in the back waistline portion 30. As shown in fig. 2, the breathable sweat-absorbent sheet 51 and the absorbent main body 10 may be at least partially overlapped in the vertical direction. In other words, the breathable sweat-absorbent sheet 51 may be disposed so as to be continuous with the absorbent main body 10 in the up-down direction. In this way, since no gap is formed between the breathable sweat-absorbent sheet 51 and the absorbent main body 10, good water absorbing performance is easily ensured over a wide range on the back side.
The sweat absorbing portion 50 may be formed by applying a hydrophilizing agent 52, not shown, to a predetermined region on the skin side surface of the back waistline portion 30, or joining sheet members (for example, nonwoven fabrics) coated with the hydrophilizing agent 52 to a predetermined region on the skin side surface of the back waistline portion 30. As the hydrophilizing agent 52, a known hydrophilizing agent used for absorbent articles such as disposable diapers can be used. Further, the sweat absorbing portion 50 may be formed by performing compression processing on a predetermined region of the skin-side sheet 31. For example, when a plurality of pin embossing is performed in the region indicated by the diagonal line portion in fig. 2, gaps between fibers constituting the sheet are reduced in the portion where the pin embossing is formed, so that moisture is easily permeated by capillary phenomenon, and water absorption is improved. Accordingly, the sweat absorbing portion 50 may be formed by such compression processing.
In the diaper 1 of the present embodiment, it is preferable that no opening such as a hole or slit corresponding to the opening 40 is provided in the sweat absorbing portion 50. The reason for this will be described later.
In the following, the portion of the diaper 1 where the sweat-absorbent portion 50 is not provided among the abdomen-side waistline portion 20 and the back-side waistline portion 30 is also referred to as "weak sweat-absorbent portion 60". That is, the sweat absorbing part 50 is a part that absorbs sweat of the wearer more easily than the weak sweat absorbing part 60.
Sweat absorbing properties of the diaper 1
Next, the sweat absorbing performance of the diaper 1 will be described. Fig. 4A is a schematic cross-sectional view of the pants-shaped diaper 1 in a state of being elongated in the left-right direction when viewed from the upper side in the up-down direction (waist opening BH side). Fig. 4B is a schematic cross-sectional view of the pants-shaped diaper 1 in which the extended state of fig. 4A is released and the diaper is in a natural state when viewed from the upper side (waist opening BH side) in the vertical direction. In fig. 4A, for convenience of explanation, the waist opening BH is shown as a substantially elliptical shape in a state where the waist portions 20, 30 are elongated in the left-right direction. In addition, neither fig. 4A nor fig. 4B show the absorbent main body 10.
As shown in fig. 4A, in a state where the diaper 1 is stretched in the left-right direction, neither the abdomen-side waistline portion 20 nor the back-side waistline portion 30 has large wrinkles formed on the front surface, and has no irregularities in the thickness direction. Therefore, the sweat absorbing portion 50 provided on the skin side surface of the back waistline portion 30 maintains the plane (curved surface) as shown in fig. 4A.
When the stretched state is released from this state, the abdomen-side waistline portion 20 and the back-side waistline portion 30 contract in the left-right direction based on the contraction force of the filiform elastic members 23, 33 or the stretchable sheet 24 provided in the abdomen-side waistline portion 20 and the back-side waistline portion 30. At this time, as shown in fig. 4B, the contraction patterns are different between the abdomen-side waistline portion 20 and the back-side waistline portion 30.
Since the plurality of openings 40, … are provided in the abdomen-side waist area 20 of the diaper 1, the skin-side sheet 21 or the non-skin-side sheet 22 has lower rigidity and is easily deformed than a case where no opening is provided. Thus, the skin-side sheet 21 and the non-skin-side sheet 22 are greatly contracted in the left-right direction, and the surface of the abdomen-side waist portion 20 is deformed to have irregularities in the thickness direction as shown in fig. 4B. That is, a plurality of wrinkles are formed on the surface of the abdomen-side waist area 20.
On the other hand, the sweat absorbing portion 50 is provided in the back waistline portion 30, and an opening (through hole) corresponding to the opening 40 of the abdomen-side waistline portion 20 is not provided in the sweat absorbing portion 50 in the diaper 1. Therefore, the region of the back waistline portion 30 where the sweat-absorbent portion 50 is provided has higher rigidity than other regions (the weak sweat-absorbent portion 60), and the skin-side sheet 31 or the non-skin-side sheet 32 is less likely to deform. Thus, the region of the back waistline portion 30 overlapping the sweat absorbing portion 50 is easily maintained in a planar state.
The abdomen-side waistline portion 20 and the back-side waistline portion 30 are joined to each other at both side ends in the left-right direction by a pair of side fastening portions 5, 5. That is, the abdomen-side waistline portion 20 which is easily contracted and the back-side waistline portion 30 (sweat absorbing portion 50) which is difficult to contract are connected in the circumferential direction of the waistline opening portion BH. Therefore, if the abdomen-side waistline portion 20 corresponding to the weak sweat absorbing portion 60 is contracted in the lateral direction, the sweat absorbing portion 50 of the back-side waistline portion 30 is easily stretched relatively to both sides in the lateral direction, and it is difficult to form irregularities in the thickness direction compared to the abdomen-side waistline portion 20 (weak sweat absorbing portion 60). That is, wrinkles are hardly formed in the sweat absorbing portion 50, and the planar shape is easily maintained.
Therefore, when the diaper 1 is worn, the sweat absorbing portion 50 is easily matched with the skin of the wearer in a perfect fit, and sweat of the wearer can be effectively absorbed over the entire surface of the sweat absorbing portion 50. This improves the sweat absorbing performance of the diaper 1.
In the diaper 1 of the present embodiment, the sweat absorbing portion 50 is provided only on one side of the abdomen-side waistline portion 20 and the back-side waistline portion 30. In other words, the sweat absorbing portion 50 is not provided on the other side of the abdomen-side waistline portion 20 and the back-side waistline portion 30. In the example of fig. 4B, the sweat absorbing portion 50 is provided only in the back waistline portion 30, and the sweat absorbing portion 50 is not provided in the abdomen-waistline portion 20. By providing the sweat absorbing portion 50 on only one side of the abdomen-side waistline portion 20 and the back-side waistline portion 30 in this way, a difference in the contraction amount in the left-right direction is likely to occur between the abdomen-side waistline portion 20 and the back-side waistline portion 30. That is, the weak sweat-absorbent portion 60 on the side where the sweat-absorbent portion 50 is not provided (the abdomen side in fig. 4B) is greatly contracted in the circumferential direction of the waist opening BH, whereas the contraction amount on the side where the sweat-absorbent portion 50 is provided (the back side in fig. 4B) is reduced.
Therefore, the portion where the sweat absorbing portion 50 is provided is easily stretched, and is easily stretched relatively in the circumferential direction of the waist opening BH. Therefore, as described above, the planar shape of the sweat absorbing portion 50 is maintained, and the wearer's body can be easily matched with the surface. This improves the sweat absorption performance of the diaper 1 (sweat absorbing portion 50). In addition, even when the sweat absorbing portion 50 is not provided on the back side but is provided only on the abdomen side, the planar shape of the sweat absorbing portion 50 is easily maintained, and the effect of improving the sweat absorbing performance on the abdomen side can be obtained. However, since the perspiration amount of the wearer is generally larger on the back side than on the abdomen side, it is effective to provide the perspiration absorbing portion 50 on the back side as in the present embodiment.
In the diaper 1, when the sweat absorbing portion 50 is provided with an opening, the area of the opening provided per unit area of the weak sweat absorbing portion 60 is larger than the area of the opening provided per unit area of the sweat absorbing portion 50. With such a configuration, the rigidity of the weak sweat-absorbent portion 60 is lower than the rigidity of the sweat-absorbent portion 50, and the contraction amount of the weak sweat-absorbent portion 60 is larger than the contraction amount of the sweat-absorbent portion 50 when the diaper 1 contracts. Accordingly, the sweat absorbing portion 50 is easily extended in the left-right direction relatively to the extent to which the weak sweat absorbing portion 60 is easily contracted in the left-right direction, and the sweat absorbing portion 50 is easily maintained in a planar shape. Thus, when the diaper 1 is worn, the sweat absorbing part 50 can be easily matched with the skin of the wearer in terms of surface, and the sweat absorbing performance of the sweat absorbing part 50 can be improved. For example, the area of the opening of the sweat absorbing portion 50 can be measured by performing image capturing of the portion where the opening is formed in a state where the diaper 1 is stretched (for example, a planar state in fig. 2) and performing image analysis. In addition, when the sizes and shapes of the openings (holes) are the same, the sizes of the areas can be compared by measuring the number of openings provided per unit area of the sweat absorbing portion 50 and the weak sweat absorbing portion 60.
In the present embodiment, as shown in fig. 2, no opening is provided in the region overlapping the sweat absorbing portion 50 among the waistline portions 20, 30. Therefore, the rigidity of the sweat absorbing portion 50 is easily increased as compared with the weak sweat absorbing portion 60 provided with the opening 40, and if the weak sweat absorbing portion 60 is contracted, the sweat absorbing portion 50 is relatively stretched, and the sweat absorbing portion 50 is more easily maintained in a planar shape. This can further improve the sweat absorbing performance of the sweat absorbing portion 50.
Further, in the diaper 1 of the present embodiment, the breathable absorbent sheet 51 is laminated and bonded to the skin side surface of the back waistline unit 30 to form the sweat-absorbent portion 50. Therefore, the material rigidity of the region where the sweat absorbing portion 50 is provided is higher than that of the other region (weak sweat absorbing portion 60), and wrinkles or irregularities are hardly formed on the surface of the sweat absorbing portion 50. That is, the rigidity of the sweat-absorbent portion 50 is higher than the rigidity of the weak sweat-absorbent portion 60 by the amount by which the breathable sweat-absorbent sheets 51, which are sheet members separately provided with respect to the sheet members (the skin-side sheet 31 and the non-skin-side sheet 32) constituting the back-side waist portion 30, are laminated. Therefore, the sweat absorbing part 50 is easily maintained in a planar shape to be surface-matched with the skin of the wearer, thereby further improving sweat absorbing performance.
Further, the opening 40 provided in the weak sweat absorbing portion 60 of the diaper 1 is preferably a through hole penetrating the abdomen-side waistline portion 20 (the back-side waistline portion 30) in the thickness direction. For example, in the case where the opening 40 is provided only in one of the sheet members constituting the skin-side sheet 21 and the non-skin-side sheet 22 of the abdomen-side waist belt 20, the weak sweat absorbing part 60 of the abdomen-side waist belt 20 has higher rigidity and thus has a lower degree of shrinkage than in the case where the opening 40 is provided in both sheet members. If the weak sweat absorbing portion 60 is less likely to shrink, the relative extension of the sweat absorbing portion 50 may be smaller, and the sweat absorbing portion 50 may be less likely to maintain the planar shape.
In the present embodiment, as shown in fig. 3, the opening 40 penetrating the skin-side sheet 21 and the non-skin-side sheet 22 (and the stretchable sheet 24) in the thickness direction is provided in the weak sweat-absorbent portion 60 of the abdomen-side waist area 20. As a result, the abdomen-side waist area 20 (the weak sweat absorbing part 60) is easily contracted as shown in fig. 4B, and the sweat absorbing part 50 is stretched by contraction of the weak sweat absorbing part 60 to extend in the left-right direction, so that the sweat absorbing part 50 is easily maintained in a planar shape. Therefore, the sweat absorbing part 50 can be easily matched with the skin of the wearer in terms of surface, and the sweat absorbing performance can be further improved. Further, since the ventilation property is further improved by providing the through-holes (openings 40) in the weak sweat-absorbing portion 60, the generation of stuffiness and skin rash due to sweat in the weak sweat-absorbing portion 60 is easily suppressed when the diaper 1 is worn.
In the diaper 1, an opening 40 is provided in an upper region of the sweat absorbing portion 50 in the up-down direction. In fig. 2, a plurality of openings 40, … are provided in the upper end region of the abdomen-side waist area 20, and it is apparent that the rigidity of the abdomen-side waist area 20 in this region is lowered. Therefore, when the waist sections 20, 30 contract in the right-left direction during wearing of the diaper 1, the upper end section of the abdomen-side waist section 20 contracts to the maximum extent, and as shown in fig. 4B, uneven deformation occurs in the thickness direction, and wrinkles are easily formed. That is, the abdomen-side region of the waist opening BH is formed with a plurality of folds aligned in the left-right direction along the up-down direction.
When such wrinkles are formed in the waist opening BH, a gap is formed between the skin of the abdomen-side waist portion of the wearer and the abdomen-side waist portion 20 when the diaper 1 is worn, and heat or moisture easily moves through the gap. That is, along the wrinkles extending in the up-down direction, heat or moisture is easily discharged from the waist opening BH to the outside of the diaper 1. Thus, even in the region where the sweat absorbing portion 50 is not provided, the generation of stuffiness and skin rash due to sweating can be more easily suppressed.
As shown in fig. 1 and 2, the diaper 1 does not have an opening 40 in the region overlapping the absorbent body 10 in the waistline units 20, 30. In other words, the opening 40 is provided in a region that does not overlap with the absorbent main body 10. If the opening 40 is provided in the region overlapping with the absorbent main body 10, the user may be given the impression that excretions such as urine absorbed by the absorbent main body 10 will leak to the outside through the opening 40. In contrast, in the diaper 1, since the absorbent body 10 and the opening 40 do not overlap, it is difficult for the user to have an unnecessary fear. Further, since the absorbent body 10 is not sandwiched between the opening 40 and the skin of the wearer, moisture such as sweat is easily evaporated to the outside of the diaper 1 through the opening 40, and the occurrence of stuffiness and rash is easily suppressed.
Further, a planar stretchable sheet 24 stretchable at least in the left-right direction is provided in the abdomen-side waist area 20. In the region of the abdomen-side waist area 20 where the stretchable panel 24 is provided, the stretching force (contraction force) is developed in the entire region in the up-down direction of the stretchable panel 24, and therefore, the abdomen-side waist area 20 can be restrained from being wrinkled in the up-down direction when the diaper 1 is worn.
It is assumed that a plurality of linear elastic members (elastic members corresponding to the linear elastic members 23) such as rubber threads are arranged in a vertically spaced manner in the abdomen-side waist area 20 of fig. 2 in place of the stretchable panel 24. In such a configuration, when the linear elastic members contract, the interval between the 2 linear elastic members adjacent to each other in the up-down direction may be reduced. Further, the distance between the linear elastic members in the up-down direction is reduced, whereby the abdomen-side waist area 20 contracts in the up-down direction itself, and so-called wrinkles may occur. In such a case, the good matching performance of the abdomen-side waist area 20 may be impaired, or a stuffiness or a rash may be easily generated due to the blockage of the opening 40.
In contrast, in the present embodiment, by providing the planar stretchable sheet 24, the abdomen-side waist area 20 in this region is prevented from being wrinkled in the up-down direction, and good matching can be achieved. In addition, since the opening 40 is less likely to be blocked, the generation of stuffiness or rash when wearing the diaper 1 can be suppressed.
In the present embodiment, the sweat absorbing portion 50 is provided on one side (the back side waistline portion 30) of the front and back waistline portions 20, 30, and the stretchable sheet 24 is provided on the other side (the abdomen side waistline portion 20). Further, a plurality of openings 40 penetrating the stretchable sheet 24 in the thickness direction are provided. By providing the opening 40 in the stretchable panel 24, the rigidity and stress of the stretchable panel 24 become low, and therefore the abdomen-side waist area 20 is more likely to shrink and wrinkles are likely to be formed. This allows sweat or heat to be effectively evaporated from the openings 40 and the gaps between the folds toward the outside of the diaper 1. Further, the abdomen-side waist area 20 is easily contracted by the stretchable sheet 24, so that the sweat absorbing portion 50 provided in the back-side waist area 30 is easily extended relatively, and the planar shape is easily maintained. Therefore, the sweat absorbing property of the sweat absorbing portion 50 can be improved.
Modification examples
In the above-described embodiment, the example in which the opening 40 is provided in the weak sweat-absorbent portion 60 on the abdomen-side waistline portion 20 side has been described, but the opening may be provided in the weak sweat-absorbent portion 60 on the back-side waistline portion 30 side. Fig. 5 is a plan view of a modification of the diaper 1 in an expanded and extended state.
In the modification of fig. 5, a plurality of openings 41 are provided in the back waistline unit 30 in a region which is outside the sweat absorbing unit 50 in the left-right direction and which overlaps the sweat absorbing unit 50 in the up-down direction. That is, the opening 41 is provided in a region between the sweat absorbing portion 50 and the side Fang Kagu portion 5 in the lateral direction. The opening 41 is a through hole having the same shape and size as the opening 40 and penetrating the skin-side sheet 31 and the non-skin-side sheet 32 constituting the back waistline portion 30 in the thickness direction. However, the opening 41 may be a hole having a shape and size different from those of the opening 40, and may not penetrate the skin-side sheet 31 and the non-skin-side sheet 32 in the thickness direction, and may be provided in at least one of the skin-side sheet 31 and the non-skin-side sheet 32. The arrangement and the number of the plurality of openings 41 are not limited to the configuration shown in fig. 5, and may be appropriately changed.
As shown in fig. 5, by providing the opening 41 in the region (weak sweat absorbing portion 60) between the sweat absorbing portion 50 and the side Fang Kagu portion 5 in the lateral direction, the rigidity of the region becomes lower than in the case where the opening 41 is not provided. Therefore, when the diaper 1 is contracted, the region between the sweat absorbing portion 50 and the side Fang Kagu portion 5 is liable to contract.
Fig. 4B illustrates a configuration in which the sweat absorbing portions 50 of the back side waistline portion 30 are easily extended relatively by contraction of the abdomen side waistline portion 20, but in this modification, the regions on both sides in the left-right direction of the sweat absorbing portions 50 are more easily contracted. Therefore, the sweat absorbing portion 50 is strongly stretched to both sides in the left-right direction, and the sweat absorbing portion 50 extends in the left-right direction, so that the planar shape is easily maintained. Thus, the sweat absorbing portion 50 can be easily matched with the skin of the wearer in terms of surface-to-surface fashion when the diaper 1 is worn, and the sweat absorbing performance of the diaper 1 can be improved.
Embodiment 2
In embodiment 2, a pants-type disposable diaper 2 (hereinafter also referred to as diaper 2) having sweat absorbing portions 50 on both the back side and the abdomen side will be described. Fig. 6 is a top view of the diaper 2 in an unfolded and extended state.
The diaper 2 according to embodiment 2 includes, as the sweat absorbing portion 50, a abdomen-side sweat absorbing portion 55 provided in the abdomen-side waistline portion 20 and a back-side sweat absorbing portion 56 provided in the back-side waistline portion 30. In fig. 6, the back side sweat absorbing part 56 has the same configuration as the sweat absorbing part 50 in embodiment 1. The abdomen-side sweat absorbing part 55 has substantially the same structure as the sweat absorbing part 50 according to embodiment 1. That is, the abdomen-side sweat absorbing part 55 is formed by integrating the breathable sweat absorbing sheet 51 or the hydrophilizing agent 52 applied to a predetermined region on the abdomen side surface of the abdomen-side waist part 20. The configuration other than the sweat absorbing portions 55 and 56 of the diaper 2 is substantially the same as that of the diaper 1 according to embodiment 1, and therefore, detailed description of each portion is omitted.
In the diaper 2, since the sweat-absorbent portion 50 (the abdomen-side sweat-absorbent portion 55) is provided not only in the back-side waistline portion 30 but also in the abdomen-side waistline portion 20, the abdomen-side sweat-absorbent performance improves, and the sweat-absorbent performance can be improved as a whole of the diaper 2. In particular, since the plurality of openings 40 are provided in the abdomen-side waist belt portion 30 in addition to the abdomen-side sweat absorbing portion 55 in the upper region in the up-down direction with respect to the abdomen-side sweat absorbing portion 55, sweat absorption is improved, and excellent breathability is maintained, and it is difficult for the wearer to feel uncomfortable when wearing the diaper 2.
However, in the diaper 2, the sweat absorbing portion 50 is set so that the area of the back sweat absorbing portion 56 is larger than the area of the abdomen sweat absorbing portion 55. In fig. 6, the length W56 of the back side sweat 56 in the left-right direction is equal to the length W55 of the abdomen side sweat 55 in the left-right direction (w56=w55). On the other hand, the length L56 in the up-down direction of the back side sweat absorbing portion 56 is larger than the length L55 in the up-down direction of the abdomen side sweat absorbing portion 55 (L56 > L55). That is, the area of the back side sweat absorbing part 56 is larger than the area of the abdomen side sweat absorbing part 55.
As described in embodiment 1, since the sweat absorbing portion 50 is basically not provided with an opening or the like, the sweat absorbing portion is a region having higher rigidity than the weak sweat absorbing portion 60 provided with the opening 40. That is, the sweat absorbing portion 50 is a region which is less likely to shrink and is relatively easily extended than the weak sweat absorbing portion 60. Thus, the planar shape is easily maintained, and the sweat absorbing performance can be improved by matching the skin of the wearer with the surface.
Therefore, when the sweat absorbing portions 50 (55, 56) are provided on both the abdomen side and the back side like the diaper 2, there is a possibility that a difference in rigidity is less likely to occur between the abdomen side and the back side, the sweat absorbing portions 50 are less likely to extend, and the sweat absorbing portions 50 are less likely to maintain a planar shape. Therefore, in the diaper 2, by making the area of the back side sweat absorbing portion 56 larger than the area of the abdomen side sweat absorbing portion 55, the area having higher rigidity on the back side than on the abdomen side is enlarged. As a result, the back side sweat absorbing portion 56 is less likely to shrink than the abdomen side sweat absorbing portion 55, and is easier to maintain the planar shape. Therefore, when the diaper 2 is worn, the sweat absorbing performance of the back sweat absorbing portion 56 can be improved in the back region where the amount of sweat generated is large, and the diaper 2 having good sweat absorbing performance as a whole can be realized.
In the diaper 2, if the back side sweat 56 has higher rigidity than the abdomen side sweat 55, the area of the back side sweat 56 does not necessarily have to be larger than the area of the abdomen side sweat 55. For example, the back side waistline portion 30 is configured such that the back side sweat-absorbing portion 56 is formed by integrating the breathable sweat-absorbing sheet 51 in a predetermined region, and the abdomen side waistline portion 20 is configured such that the abdomen side sweat-absorbing portion 55 is formed by applying the hydrophilizing agent 52 to a predetermined region. In this case, by stacking the highly rigid breathable sweat-absorbent sheet 51, even if the area of the back side sweat-absorbent portion 56 is smaller than the area of the abdomen side sweat-absorbent portion 55, the highly rigid back side sweat-absorbent portion 56 is easily maintained in a planar shape, and good sweat-absorbent performance on the back side can be achieved.
Other embodiments
While the embodiments of the present invention have been described above, the above embodiments are for easy understanding of the constitution of the present invention, and the present invention is not limited to the above embodiments. Further, the present invention may be modified or improved within a range not departing from the spirit thereof, and the present invention naturally includes equivalent constitution thereof.
In the above embodiments, the diaper in which the abdomen-side waistline portion 20 is separated from the back-side waistline portion 30 as a separate member has been described, but the abdomen-side waistline portion 20 and the back-side waistline portion 30 may be integrally formed by providing a crotch portion between them so that the abdomen-side waistline portion 20 and the back-side waistline portion 30 are continuous.
Description of the reference numerals
1 diapers (pants-type absorbent articles),
2 diapers (pants-type absorbent articles),
a side clamping and fixing part at the side,
an absorbent body is provided at 10 which,
11 absorber, 11A absorbent core, 11B core wrap sheet,
12 top sheet, 13 back sheet,
14 outer sheet, 15 side sheet,
17 leg elastic members, 18 leakage preventing wall elastic members,
20 abdomen-side waistline portion, 20eu upper end,
21 skin side sheet, 22 non-skin side sheet, 221 end portion,
23 filiform elastic members, 24 stretchable sheets,
20 back waistline portion, 30eu upper end,
31 skin side sheet, 32 non-skin side sheet, 321 end portion,
A 33-filament elastic member,
40, 41,
50 a sweat-absorbing part, which is arranged on the inner side of the body,
51 breathable sweat-absorbing sheet, 52 hydrophilizing agent,
55 ventral sweat absorbing part, 56 dorsal sweat absorbing part,
60 the weak sweat-absorbent portion of the pad,
70 leakage preventing wall portion.
Claims (8)
1. A pants-type disposable diaper having a vertical direction and a lateral direction intersecting each other,
the pants-type disposable diaper includes:
an absorbent body; and
a waistline portion including an elastic member that stretches in the left-right direction, a skin-side sheet that is disposed on a skin side of the elastic member, and a non-skin-side sheet that is disposed on a non-skin side of the elastic member,
the waistline portion has a weak sweat-absorbing portion and a sweat-absorbing portion which absorbs sweat of the wearer more easily than the weak sweat-absorbing portion,
the weak sweat absorbing portion is provided with an opening in at least one of the skin side sheet and the non-skin side sheet,
the area of the opening provided per unit area of the weak sweat absorbing portion is larger than the area of the opening provided per unit area of the sweat absorbing portion,
the waistline portion has a abdomen-side waistline portion and a back-side waistline portion,
the abdomen-side waistline portion and the back-side waistline portion are connected to each other by a pair of side fastening portions provided at both end portions in the left-right direction,
The weak sweat absorbing portion is provided between the sweat absorbing portion and the side fastening portion in the lateral direction.
2. A pants-type disposable diaper having a vertical direction and a lateral direction intersecting each other,
the pants-type disposable diaper includes:
an absorbent body; and
a waistline portion including an elastic member that stretches in the left-right direction, a skin-side sheet that is disposed on a skin side of the elastic member, and a non-skin-side sheet that is disposed on a non-skin side of the elastic member,
the waistline portion has a weak sweat-absorbing portion and a sweat-absorbing portion which absorbs sweat of the wearer more easily than the weak sweat-absorbing portion,
the weak sweat absorbing portion is provided with an opening in at least one of the skin side sheet and the non-skin side sheet,
the area of the opening provided per unit area of the weak sweat absorbing portion is larger than the area of the opening provided per unit area of the sweat absorbing portion,
the waistline portion has a abdomen-side waistline portion and a back-side waistline portion,
the sweat absorbing portion is provided on one of the abdomen-side waistline portion and the back-side waistline portion, and the weak sweat absorbing portion is provided on the other of the abdomen-side waistline portion and the back-side waistline portion.
3. The pant-type disposable diaper according to claim 1 or 2, wherein,
the opening is not provided in the sweat absorbing portion.
4. The pant-type disposable diaper according to claim 1 or 2, wherein,
the sweat absorbing part is provided with a breathable sweat absorbing sheet which is arranged separately from the skin side sheet and the non-skin side sheet.
5. The pant-type disposable diaper according to claim 1 or 2, wherein,
the opening is a through hole penetrating the skin-side sheet and the non-skin-side sheet in the thickness direction.
6. The pant-type disposable diaper according to claim 1 or 2, wherein,
the opening is provided in a region above the sweat absorbing portion in the up-down direction.
7. The pant-type disposable diaper according to claim 1 or 2, wherein,
the waist portion has a planar stretchable sheet stretchable in at least the left-right direction.
8. A pants-type disposable diaper having a vertical direction and a lateral direction intersecting each other,
the pants-type disposable diaper includes:
an absorbent body; and
a waistline portion including an elastic member that stretches in the left-right direction, a skin-side sheet that is disposed on a skin side of the elastic member, and a non-skin-side sheet that is disposed on a non-skin side of the elastic member,
The waistline portion has a weak sweat-absorbing portion and a sweat-absorbing portion which absorbs sweat of the wearer more easily than the weak sweat-absorbing portion,
the weak sweat absorbing portion is provided with an opening in at least one of the skin side sheet and the non-skin side sheet,
the waist part has a planar stretchable sheet stretchable at least in the left-right direction,
the waistline portion has a abdomen-side waistline portion and a back-side waistline portion,
the sweat-absorbing portion is provided on either one side of the abdomen-side waistline portion or the back-side waistline portion, the weak sweat-absorbing portion provided with the stretchable sheet is provided on the other side,
the stretchable sheet is provided with an opening.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019094779A JP7366587B2 (en) | 2019-05-20 | 2019-05-20 | Pants type disposable diaper |
| JP2019-094779 | 2019-05-20 | ||
| PCT/JP2020/013453 WO2020235213A1 (en) | 2019-05-20 | 2020-03-25 | Underpants-type disposable diaper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113873977A CN113873977A (en) | 2021-12-31 |
| CN113873977B true CN113873977B (en) | 2023-09-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202080037203.1A Active CN113873977B (en) | 2019-05-20 | 2020-03-25 | Underpants type disposable diaper |
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| Country | Link |
|---|---|
| JP (1) | JP7366587B2 (en) |
| CN (1) | CN113873977B (en) |
| WO (1) | WO2020235213A1 (en) |
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| JP2022131817A (en) * | 2021-02-26 | 2022-09-07 | ユニ・チャーム株式会社 | absorbent article |
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- 2019-05-20 JP JP2019094779A patent/JP7366587B2/en active Active
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- 2020-03-25 CN CN202080037203.1A patent/CN113873977B/en active Active
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| CN1258488A (en) * | 1998-12-28 | 2000-07-05 | 尤妮佳股份有限公司 | Disposable diaper |
| CN1325668A (en) * | 2000-05-25 | 2001-12-12 | 尤妮佳股份有限公司 | Disposable clothes |
| CN101389300A (en) * | 2006-02-28 | 2009-03-18 | 尤妮佳股份有限公司 | Disposable diaper |
| CN101636137A (en) * | 2007-02-02 | 2010-01-27 | 尤妮佳股份有限公司 | Absorptive article |
| JP2017113189A (en) * | 2015-12-22 | 2017-06-29 | 花王株式会社 | Disposable diaper |
| CN108366886A (en) * | 2015-12-22 | 2018-08-03 | 花王株式会社 | Disposable diaper |
| WO2018116479A1 (en) * | 2016-12-22 | 2018-06-28 | 花王株式会社 | Disposable diaper |
| WO2018116478A1 (en) * | 2016-12-22 | 2018-06-28 | 花王株式会社 | Absorbent article |
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| JP2020188875A (en) | 2020-11-26 |
| CN113873977A (en) | 2021-12-31 |
| WO2020235213A1 (en) | 2020-11-26 |
| JP7366587B2 (en) | 2023-10-23 |
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