JP2000316906A - Disposable absorptive article - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent urine from leaking from leg surrounding sections of a diaper main body. SOLUTION: An absorbing body 4 is provided between a liquid permeable surface sheet 2 and a liquid non-permeable back sheet 3 in a diaper main body 1. The diaper main body 1 respectively forms a first flap section 5 along a longitudinal direction at both outer sides of a width direction of the absorbing body 4. A second flap section 20 is respectively formed at an inner side of the first flap section 5 positioning at the width direction of the diaper main body 1 on the liquid permeable surface sheet 2 along the longitudinal direction. The second flap sections 20 have first barrier sections 21 and second barrier sections 22. Respective first barrier sections 21 stand from a surface of the liquid permeable surface sheet 2. Respective second barrier sections 22 provide elastic bodies 23 and are folded from a tip section of the first barrier section 21 to a center direction of the width direction to form generally reversed L shape to each first barrier section 21.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disposable absorbent article such as a disposable diaper or sanitary napkin for infants, adults or incontinence.

[0002]

2. Description of the Related Art In a conventional physiological fluid absorbent article of this kind, for example, a disposable diaper, as described in Japanese Patent Publication No. Hei 6-93901, a liquid-permeable top sheet and a liquid-impermeable back surface of a diaper main body. An absorber is interposed between the sheet and a sheet, side flaps having elastic shrinkage are formed on both outer sides in the width direction of the absorber along the longitudinal direction of the absorber, and are inwardly adjacent to the side flaps. A configuration is known in which a urine leakage preventing gather portion having a spacer means is formed.

[0003]

In the above-mentioned conventional disposable diaper, there is a problem that the urine leakage preventing gather portion easily falls down, the standing state cannot be maintained, and the excreted physiological fluid may leak.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and has a flap portion formed on a liquid-permeable top sheet side of a body for absorbing physiological fluid such as a diaper so as to be able to maintain an upright state, thereby ensuring excretion. An object of the present invention is to provide a disposable absorbent article that can prevent leakage of physiological fluid.

[0005]

According to a first aspect of the present invention, there is provided a disposable absorbent article comprising an absorbent article main body having an absorber disposed between a liquid-permeable top sheet and a liquid-impermeable back sheet. The absorbent article main body forms first flap portions along the longitudinal direction on both outer sides in the width direction of the absorber, and the liquid-permeable top sheet side has the first flap portions on both sides in the width direction of the absorbent article main body. A second flap portion is formed inside the first flap portion along the longitudinal direction, and the second flap portion has a first barrier portion and a second barrier portion. The first barrier portions are respectively erected from the surface of the liquid-permeable topsheet, and the second barrier portions on both sides are each provided with an elastic body, and each of the second barrier portions is bent in the width direction center direction from the tip of the first barrier portion, Each of the first barrier portions; And it is formed in an inverted L-shape.

[0006] The first barrier portions of the second flap portions formed on both sides in the width direction on the liquid-permeable top sheet side of the absorbent article main body are always in an upright state in the width direction of the excreted physiological fluid. Is prevented, and since the first barrier portion and the second barrier portion are formed in a substantially inverted L-shape, excreted physiological fluid such as urine does not leak over the second barrier portion, Lateral leakage of the excreted physiological fluid can be reliably prevented.

[0007] The disposable absorbent article according to the second aspect is the disposable absorbent article according to the first aspect, wherein the second barrier portion is directed toward the inside of the first barrier portion at both ends in the longitudinal direction of the absorbent article main body. It is folded and joined to the first barrier portion.

[0008] Since the second barrier portion is folded inside the first barrier portion and joined at both ends in the longitudinal direction of the absorbent article main body, the second barrier portion is formed in the width direction of the absorbent article main body. The second barrier portion is bent toward the center in the width direction of the absorbent article main body without falling down toward the outside, and the first barrier portion and the second barrier portion are surely substantially inverted L at the middle portion in the longitudinal direction. It is held in the shape of a letter, and leakage of the excreted physiological fluid can be reliably prevented.

A disposable absorbent article according to a third aspect of the present invention is the disposable absorbent article according to the first or second aspect, wherein an elastic body is provided at a bent connecting portion between the first barrier portion and the second barrier portion of the second flap portion. Is arranged.

[0010] The elastic member provided at the bent connecting portion between the first barrier portion and the second barrier portion ensures that the first barrier portion is in an upright state and the second barrier portion is bent inward in the width direction. This facilitates the formation of the second flap portion in a substantially inverted L-shape, thereby preventing leakage of the excreted physiological fluid from both sides in the width direction.

According to a fourth aspect of the present invention, there is provided the disposable absorbent article according to the third aspect, wherein a contraction rate of the elastic body provided in the first barrier portion of the second flap portion is smaller than that of the first barrier portion. It is larger than the contraction rate of the elastic body provided at the bending connection portion with the second barrier portion.

Since the contraction rate of the elastic body provided in the second barrier portion is large, the second barrier portion does not bend toward the liquid-permeable top sheet side of the absorbent article main body.
Is reliably formed in a substantially inverted L-shape to prevent leakage of the excreted physiological fluid from both sides in the width direction.

A disposable absorbent article according to a fifth aspect is the disposable absorbent article according to any one of the first to fourth aspects, wherein the first barrier portion and the second barrier portion of the second flap portion are integrally formed. It was done.

Since the second flap portion is formed integrally, productivity and manufacturability are improved, the cost can be reduced, and the first barrier portion and the second barrier portion are formed separately. The second flap portion is not hardened and the touch of the diaper wearer is not impaired, as compared with a structure connected to bonding or the like.

[0015]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a disposable absorbent article according to an embodiment of the present invention.

1 to 3, reference numeral 1 denotes a diaper main body as an absorbent article main body. The diaper main body 1 includes a liquid-permeable topsheet 2 having a liquid permeability and a liquid-impermeable liquid having a liquid impermeability. An absorbent body 4 having a liquid absorbing property is disposed between the diaper body 1 and the non-conductive back sheet 3. At the same time, it is formed in a left-right symmetrical shape that is line-symmetric with respect to the center in the width direction. Further, the absorber 4 is formed in a substantially line-symmetrical shape with the center in the longitudinal direction as the center, and is formed in a line-symmetrical shape with the center in the width direction as the center.

The liquid-permeable top sheet 2 and the liquid-impervious back sheet 3 of the diaper body 1 are cut inward in a substantially concave arc shape so that the middle portion in the longitudinal direction becomes narrow. The absorber 4 also has a concave arc-shaped edge 4a that is cut inward in a substantially concave arc so that the middle portion in the longitudinal direction is narrower. I have.

The liquid-permeable topsheet 2 has a liquid-permeability for allowing excreted physiological fluid such as urine to pass through the absorber 4, and is made of, for example, woven fabric, nonwoven fabric, porous film, synthetic fiber, and the like. The diaper body 1 is formed in a shape that covers the entire surface of the diaper body 1. The liquid-permeable topsheet 2 that comes into contact with the body when the diaper main body 1 is worn has a feeling similar to underwear so as not to give a discomfort to the wearer.

The liquid-impermeable backsheet 3 has an upper peripheral edge joined to a peripheral portion of the lower surface of the liquid-permeable topsheet 2. The liquid-impervious back sheet 3 is liquid-impermeable so as not to stain other clothes such as underwear or sheets with excreted physiological fluid such as urine or the like. Molded with resin.

The absorber 4 is formed into a substantially elongated rectangular shape, and is formed in a flat shape between the center of the lower surface of the liquid-permeable top sheet 2 and the center of the upper surface of the liquid-impermeable back sheet 3. The concave arc-shaped edge 1a of the liquid-permeable top sheet 2 and the liquid-impermeable back sheet 3
The absorber 4 is arranged so that the concave arc-shaped edge 4a at the middle part in the longitudinal direction is located opposite to the main body, and the absorbent body 4 can sufficiently absorb excreted physiological fluid such as urine. The part is formed of a material containing a substance such as a polymer absorber.

Then, a first flap portion 5 is formed outside the absorber 4 by the liquid-permeable top sheet 2 and the liquid-impermeable back sheet 3 located outside the absorber 4. ing.

Further, the left and right sides of the surface of the liquid-permeable top sheet 2 of the diaper main body 1 have a property that the excreted physiological fluid such as urine does not penetrate from the first flap portion 5 to the middle portion.
For example, hydrophobic sheets 6 and 6 formed of a liquid-impermeable material such as a polypropylene resin are polymerized, and a liquid-permeable top sheet 2 is provided between inner edges of the left and right hydrophobic sheets 6 and 6.
The central part is exposed. The hydrophobic sheets 6, 6 are formed in a substantially elongated rectangular shape in which an outer edge of a longitudinal middle portion is cut inward in a substantially concave arc shape in accordance with the liquid-permeable top sheet 2, The outer edges of the lower surfaces of the hydrophobic sheets 6 and 6 are joined to the peripheral edge of the upper surface of the liquid-permeable top sheet 2.

Next, the diaper main body 1 is appropriately bent from the unfolded state shown in FIG. 1 and is attached to the body of an infant, an incontinent person, or the like, and is formed at a longitudinally intermediate portion in the unfolded state. A back waist portion 8 located on the back side when attached to the body is integrally formed with one end in the longitudinal direction of the crotch around portion 7 located at the crotch when worn on the body. At the other end in the longitudinal direction, an abdominal waist portion 9 located on the abdomen when worn on the body is integrally formed.

In the crotch portion 7, leg portions 10 are formed at the center of both sides of the diaper main body 1 along the concave arc-shaped edge 1a of the outer edge in the width direction. This leg part 1
Reference numerals 0 and 10 denote portions which are located around the legs of the wearer when worn on the body, from the outer edge in the width direction of the absorber 4 to the outside in the width direction, the liquid-permeable topsheet 2, The back sheet 3 and the hydrophobic sheets 6, 6 are formed by the extended first flap 5. A substantially string-shaped first member formed of one or a plurality of rubbers or the like is
Flap elastic bodies 11, 11 are disposed between the liquid-permeable top sheet 2 and the liquid-impermeable back sheet 3 along the longitudinal direction of the diaper main body 1, and the first flap elastic bodies 11, 11 are provided.
Girder part 1 around the extension of the liquid-impermeable backing sheet 3
2, 12 are formed.

The back waist portion 8 and the abdominal waist portion 9 are formed integrally with the crotch portion 7 so as to be integral with the back waist portion 8 and the abdominal waist portion 9. Is formed to be larger than the width dimension of the crotch circumference 7 in the width direction. Further, hook-and-loop fasteners 13 are attached to both side edges in the width direction of the back waist portion 8,
A hook-and-loop fastener 14 is detachably engaged with the hook-and-loop fastener 13 at a substantially central portion of the abdominal waist portion 9.

The length of the absorbent body 4 in the width direction of the portion located at the back waist portion 8 and the abdominal waist portion 9 is the same as the width direction of the portion located at the crotch portion 7. The absorbent body 4 has a back-side absorbing portion 16 and a ventral-side absorbing portion 17 which are larger than the length of the central portion. The portion of the absorber 4 located at the crotch-around portion 7 is a narrow central absorbing portion 18.

The hydrophobic sheets 6, 6 superposed on the liquid-permeable top sheet 2 are positioned inside the first flap portion 5 on both sides in the width direction of the diaper main body 1 along the longitudinal direction. Thus, second flap portions 20, 20 are respectively formed. The second flap portions 20, 20 have a first barrier portion 21 and a second barrier portion 22 integrally formed, and the first barrier portions 21 on both sides of the first flap portion 20, as shown in FIG. Each of the second barrier portions 22 on both sides is provided with an elastic body 23, and the elastic body 23 is wrapped around the inner edge of the second barrier portion 22. The second barrier portion 22 is bonded to the first
Each of the first and second barrier portions 21 and 22 is formed in a substantially inverted L-shape. The number of the elastic bodies 23 is appropriately arranged as needed.

Further, the second flap portions 20, 20
As shown in FIG. 2, the barrier portion 22 is folded toward the inside of the first barrier portion 21 at both ends in the longitudinal direction of the diaper main body 1, and the inner surface of the second barrier portion 22 becomes the inner surface of the first barrier portion 21. Are bonded by bonding or the like.

Next, the operation of the embodiment will be described.

When the diaper body 1 is worn on the body,
The crotch portion 7 of the diaper body 1 is positioned at the crotch, the back waist portion 8 is positioned on the back side, and the abdomen waist portion 9 is positioned on the abdomen. Then, the liquid-permeable top sheet 2 of the diaper body 1 is brought into contact with the body, and the diaper body 1
The hook-and-loop fastener 14 fixed to the back-side waist portion 9 is attached to the hook-and-loop fastener 13 fixed to the back-side waist portion 8 so as to be detachably engageable.

In this state, the leg gather portions 12, 12 of the first flap portion 5 of the diaper main body 1 come into close contact with the wearer's legs, so that the diaper main body 1 has both sides in the width direction on the liquid-permeable top sheet 2 side. The first barrier portions 21 of the second flap portions 20 are always in an upright state to prevent the excreted physiological fluid from leaking in the width direction, and are disposed on the second barrier portion 22. The second barrier portion 22 is bent inward by the elastic body 23 and the first barrier portion 21 and the second barrier portion 22 are formed in a substantially inverted L-shape. The liquid does not leak, and lateral leakage of the excreted physiological fluid such as urine can be reliably prevented.

Further, since the second barrier portion 22 is folded and joined inside the first barrier portion 21 at both ends in the longitudinal direction of the diaper main body 1, the second barrier portion 22 is formed in the width direction of the diaper main body 1. The second barrier portion 22 is bent toward the center in the width direction of the diaper main body 1 without falling down toward the outside of the diaper main body 1, and the first barrier portion 21 is provided at a middle portion in the longitudinal direction.
And the second barrier portion 22 are surely held in a substantially inverted L-shape, and leakage of the excreted physiological fluid can be reliably prevented.

Further, since the first barrier portion 21 and the second barrier portion 22 of the second flap portion 20 are formed integrally, productivity and manufacturability are improved, the cost can be reduced, and the first barrier portion can be formed. Compared to a structure in which the portion 21 and the second barrier portion 22 are formed separately and connected with an adhesive or the like, the second flap portion 22 does not become hard and does not impair the touch of the diaper wearer.

Next, another embodiment of the disposable absorbent article will be described with reference to FIG. 4 for a disposable diaper.

The diaper body 1 as the absorbent article according to the embodiment shown in FIGS. 1 to 3 has the same configuration as the diaper body 1, and further has hydrophobic sheets 6 and 6 polymerized on the liquid-permeable top sheet 2 side. On both sides in the width direction of the diaper main body 1, second flap portions 20, 20 are formed along the longitudinal direction and located inside the first flap portion 5, respectively. The second flap portions 20 have a first barrier portion 21 and a second barrier portion 22 integrally formed, and the first barrier portions on both sides thereof.
As shown in FIG. 3, reference numerals 21 stand upright from the surface of the liquid-permeable top sheet 2, respectively. Elastic bodies 23 are respectively arranged on the second barrier portions 22 on both sides, and the elastic bodies 23 It is wrapped and adhered at the winding edge of the inner edge of the part 22,
The second barrier portions 22 are bent from the front end portion of the first barrier portion 21 toward the center in the width direction, and the first barrier portion 21 and the second barrier portion 22 are formed in a substantially inverted L-shape. ing. The number of the elastic bodies 23 is appropriately arranged as needed.

Further, the second flap portions 20,
As shown in FIG. 2, the barrier portion 22 is folded toward the inside of the first barrier portion 21 at both ends in the longitudinal direction of the diaper main body 1, and the inner surface of the second barrier portion 22 becomes the inner surface of the first barrier portion 21. Are bonded by bonding or the like.

In the structure shown in FIGS. 1 to 3,
As shown in FIG. 4, an elastic body 26 is provided at a bent connecting portion 25 between the first barrier portion 21 and the second barrier portion 22 of the second flap portion 20 of the diaper main body 1 shown in FIG. This elastic body 26
Are appropriately arranged as needed.

The contraction rate of the elastic body 23 provided in the first barrier portion 21 of the second flap portion 20 is provided in the bent connecting portion 25 between the first barrier portion 21 and the second barrier portion 22. It is larger than the contraction rate of the elastic body 26.

Next, the operation of this embodiment will be described.

Also in this embodiment, the first diaper body 1
Second flap portions formed on both sides in the width direction on the liquid-permeable top sheet 2 side of the diaper main body 1 with the leg gather portions 12, 12 of the flap portion 5 in close contact with the wearer's legs.
The first barrier portions 21 of the 20, 20 are always in an upright state to prevent the excreted physiological fluid from leaking in the width direction, and the second barrier portion 22 is formed by the elastic body 23 disposed on the second barrier portion 21. Bent inward, the first barrier part 21 and the second barrier part
Since it is formed in a substantially inverted L-shape from 22, the excreted physiological fluid does not leak over the second barrier portion 21, and lateral leakage of excreted physiological fluid such as urine can be reliably prevented.

Further, since the second barrier portion 22 is folded and joined inside the first barrier portion 21 at both ends in the longitudinal direction of the diaper main body 1, the second barrier portion 22 is formed in the width direction of the diaper main body 1. The second barrier portion 22 is bent toward the center in the width direction of the diaper main body 1 without falling down toward the outside of the diaper main body 1, and the first barrier portion 21 is provided at a middle portion in the longitudinal direction.
And the second barrier portion 22 are surely held in a substantially inverted L-shape, and leakage of the excreted physiological fluid can be reliably prevented.

Further, in this embodiment, a bent connecting portion between the first barrier portion 21 and the second barrier portion 22 is further provided.
The elastic body 26 disposed on the first 25 ensures that the first barrier portion 21 is in an upright state and that the second barrier portion 22 is easily bent inward in the width direction, so that the second flap portions 20, 20 are formed.
Is reliably formed in a substantially inverted L-shape, and leakage of the excreted physiological fluid from both sides in the width direction can be prevented.

The contraction rate of the elastic body 23 provided in the first barrier portion 21 of the second flap portion 20 is determined by the elasticity provided in the bending connection portion 25 between the first barrier portion 21 and the second barrier portion 22. Since the contraction rate of the body 26 is larger than that, the second barrier portion 22 does not bend toward the liquid-permeable top sheet 2 of the diaper main body 1, and the second flap portion 20 is surely formed in a substantially inverted L-shape. Leakage of the excreted physiological fluid from both sides in the width direction can be prevented.

[0044]

According to the first aspect of the present invention, the first barrier portions of the second flap portions formed on both sides in the width direction on the liquid-permeable top sheet side of the absorbent article main body such as a diaper are provided. It is always in an upright state to prevent the excreted physiological fluid from leaking in the width direction. Also, since the first and second barrier portions are formed in a substantially inverted L-shape, they pass over the second barrier portion. Thus, the excreted physiological fluid does not leak and lateral leakage of the excreted physiological fluid can be reliably prevented.

According to the second aspect of the present invention, the second barrier portion is folded inside the first barrier portion and joined at both ends in the longitudinal direction of the absorbent article main body. The second barrier portion is bent toward the center in the width direction of the absorbent article main body without falling down toward the outside in the width direction of the absorbent article main body, and the first barrier portion and the second barrier are formed in the middle portion in the longitudinal direction. Approximately L
It is held in the shape of a letter, and leakage of the excreted physiological fluid can be more reliably prevented.

According to the third aspect of the present invention, the first barrier portion is reliably brought to the upright state and the second barrier is provided by the elastic member disposed at the bent connection portion between the first barrier portion and the second barrier portion. The portion is easily bent inward in the width direction, and the second flap portion is reliably formed in a substantially inverted L-shape, thereby preventing leakage of the excreted physiological fluid from both sides in the width direction.

According to the fourth aspect of the present invention, since the elastic member provided in the second barrier portion has a large contraction rate, the second barrier portion does not bend toward the liquid-permeable top sheet side of the diaper body. The second flap portion is reliably formed in a substantially inverted L-shape, and can prevent leakage of the excreted physiological fluid from both sides in the width direction.

According to the fifth aspect of the present invention, since the first barrier portion and the second barrier portion of the second flap portion are integrally formed, productivity and manufacturability are improved, and the cost can be reduced. In addition, as compared with a structure in which the first barrier portion and the second barrier portion are formed separately and connected with an adhesive or the like,
Of the absorbent article does not become hard and does not impair the touch of the wearer of the absorbent article.

[Brief description of the drawings]

FIG. 1 is a plan view showing one embodiment of a disposable diaper of a disposable absorbent article according to the present invention.

FIG. 2 is a sectional view of a portion II in FIG.

FIG. 3 is a sectional view of a portion III in FIG.

FIG. 4 is a sectional view of a part III in FIG. 1 showing another embodiment of the disposable diaper of the disposable absorbent article of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Diaper main body used as an absorbent article main body 2 Liquid-permeable topsheet 3 Liquid-impermeable backsheet 4 Absorber 5 1st flap part 20 2nd flap part 21 1st barrier part 22 2nd barrier parts 23 and 26 Elastic body 25 Bend connection

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Minoru Hoshino 3-8-30 Nishikicho, Kiryu-shi, Gunma F-term (reference) 3B029 BD12 BD13 4C003 DA06 EA03 HA05 4C098 AA09 CC07 CC10 CC12 CC15 CE06

Claims (5)

[Claims] 1. An absorbent article main body having an absorbent body disposed between a liquid-permeable top sheet and a liquid-impermeable back sheet, and the absorbent article main body is provided on both outer sides in the width direction of the absorbent body. First flap portions are respectively formed along the longitudinal direction, and both sides of the absorbent article main body in the width direction are located inside the first flap portion on the liquid-permeable top sheet side and along the longitudinal direction. Forming a second flap portion, the second flap portion has a first barrier portion and a second barrier portion, and the first barrier portions on both sides are respectively formed from the surface of the liquid-permeable surface sheet. The second barrier portions on both sides are provided with elastic bodies, respectively, and are bent in the width direction center direction from the front end portion of the first barrier portion, respectively, and are formed in a substantially inverted L-shape with each of the first barrier portions. Disposable Osamusei goods. 2. The method according to claim 1, wherein the second barrier portion is folded toward the inside of the first barrier portion and joined to the first barrier portion at both ends in the longitudinal direction of the absorbent article main body. 2. The disposable absorbent article according to 1. 3. The disposable absorbent article according to claim 1, wherein an elastic body is provided at a bent connecting portion between the first barrier portion and the second barrier portion of the second flap portion. 4. The shrinkage rate of an elastic body provided in the first barrier portion of the second flap portion is larger than the shrinkage ratio of the elastic body provided in a bending connection between the first barrier portion and the second barrier portion. The disposable absorbent article according to claim 3, characterized in that: 5. The disposable absorbent article according to claim 1, wherein the first barrier portion and the second barrier portion of the second flap portion are formed integrally.