JP2003319959A - Absorptive article - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an absorptive article provided with three-dimensional gathers having good follow-up characteristics to comply with the movement of the thighs or feet of a wearing person. <P>SOLUTION: The gathers on the inner and outer sides disposed with in elastic bodies are integrated in the central part of a longitudinal direction and are branched to a plane Y shape at the ends in the longitudinal direction. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an absorbent article, particularly to an improvement in its three-dimensional gather and a disposable diaper and pads using the same.

[0002]

2. Description of the Related Art In a conventional paper diaper having a three-dimensional gather with an elastic member at the tip of a flap portion located outward from the side edge of the paper diaper in the width direction of the absorber, the conventional diaper is adapted to the movement of the wearer's crotch or foot. The left and right three-dimensional gathers may be insufficiently tracked, and the movement of the wearer easily creates a gap between the groin and the disposable diaper, which causes leakage of urine. In addition, since the three-dimensional gathers do not stand up enough when worn, it may be worn in a folded or collapsed state, and the function of the main body may not be fully exerted.

[0003]

DISCLOSURE OF THE INVENTION The present invention solves such insufficient tracking of left and right three-dimensional gathers, generation of a gap easily formed between the crotch part and the absorbent article, and malfunction due to folding and collapse of the three-dimensional gathers. It was made for the purpose.

[0004]

SUMMARY OF THE INVENTION The present invention provides an absorbent article having a surface material, a leak-proof sheet, and an absorber, which comprises two or more three-dimensional gathers in which elastic members are arranged on sheet members such as non-woven cloth and film. Provided on the left and right sides, each three-dimensional gather guides one elastic member in the flap direction and the other elastic member in the absorber direction at one or both ends in the longitudinal direction, and one elastic member in the central portion in the longitudinal direction. The present invention relates to an absorbent article characterized by being integrated as a three-dimensional gather.

Further, according to the present invention, in an absorbent article having a surface material, a leak-proof sheet, and an absorber, two or more three-dimensional gathers in which elastic members are arranged on a sheet member such as a non-woven cloth or a film are provided. The left and right solid gathers are provided along the longitudinal direction.
One or more elastic members are guided in the width direction outer flap direction of the absorbent article, and the other one or more elastic members are guided in the width direction inner absorbent body direction. The present invention relates to an absorbent article in which two or more three-dimensional gathers on the left and right sides are integrated at least partially in the central portion in the longitudinal direction.

The present invention provides an absorbent article in a developed state,
The two or more three-dimensional gathers on each of the left and right sides have an array shape in which the tip ends open in a Y shape from the longitudinal center of the absorbent article toward one end or both ends in the longitudinal direction. It has a feature.

According to the present invention, each of the left and right three-dimensional gathers is composed of two or more sheets or one sheet which are joined to each other in the central part of the crotch part of the absorbent article, and at the branch portion on the back side and / or the abdomen side. Each of these left and right sheets is characterized by being branched into an outer sheet facing outward in the width direction and an inner sheet facing inward in the width direction toward the ends in the longitudinal direction.

The present invention is characterized in that the elastic member provided in the outer three-dimensional gather is arranged in a stretched state up to the vicinity of the flap side edge.

The present invention is characterized in that the positions of the inner and outer branches of the inner and outer three-dimensional gathers are located closer to the center in the longitudinal direction than the longitudinal ends of the absorber.

The present invention is characterized in that the inner and outer three-dimensional gathers have the same height in both the inner and outer three-dimensional gathers, or the outer three-dimensional gathers are higher or lower than the inner three-dimensional gathers.

The present invention is characterized in that the inner and outer three-dimensional gathers are each made of a water repellent non-woven fabric.

The present invention is characterized in that one of the inner and outer three-dimensional gathers is made of a water-repellent non-woven fabric, and the rest of the other is made of a hydrophilic non-woven fabric.

The present invention is characterized in that the absorbent article is a taped type or pants type disposable diaper, a urine absorbing pad or an incontinence pad.

The present invention also relates to a three-dimensional gather of absorbent articles having the above-mentioned features.

[0015]

[Function] The left and right composite three-dimensional gathers of the present invention are
At the center of the crotch, one or at least a part of the plurality of sheets is integrated, and at the branching portion, the composite sheet is divided into left and right parts and branched in the rolling direction of each elastic body.

In the taped type and complete pants type disposable diapers, the outer elastic body is arranged in a stretched state up to the vicinity of the side edge of the flap portion so that the three-dimensional gathers fit according to the movement of the body. Is preferred.
In particular, in the case of the tape fixing type, it is preferable to dispose the tape even in the tape base material portion because the fit around the waist is improved.

Further, it is preferable that the position of the branch where the above-mentioned composite gather branches to the left and right is closer to the center in the longitudinal direction than the end portion in the longitudinal direction of the absorber, from the standpoint of standing up and leakage prevention of the three-dimensional gather.

The sheet member constituting the three-dimensional gather is
Although it is a non-woven cloth or a film, preferably a water-repellent non-woven cloth, a hydrophilic non-woven cloth may be used for either one of the inner and outer three-dimensional gathers. Each elastic body stretch rate is arbitrarily set, but the stretch rate is 100 to 300%, more preferably 1
It is 50 to 250%. Elastic member expansion rate (%) = (elastic member length after expansion) /
(Length of elastic member before extension) x 100

[0019]

EFFECTS OF THE INVENTION (1) The uprightness of the three-dimensional gathers is improved more than the outward elastic bodies, and the three-dimensional gathers are prevented from being deformed by the inward elastic bodies, and in particular, the fit around the crotch of the groin is obtained. Is improved and leakage is improved. (2) The three-dimensional gather is deformed into a "dogleg" by the forces of the two elastic bodies inside and outside. (3) As a result, the lower half of the three-dimensional gather functions as a canopy protruding above the absorber, and forms a semi-closed portion so as to retain the fluid that cannot be completely absorbed. (4) The elastic body disposed outside the three-dimensional gather (far edge) forms a curved shape on the outside around the groin / leg. Following the movement of the foot, it can be fitted along the far edge of the three-dimensional gather. (5) When used together with the urine absorbing pad, the gap between the three-dimensional gathers on the inside is converged, so that the displacement in the pad front-back direction is prevented.

[0020]

EXAMPLES Examples of the present invention will be shown below, but the present invention is not limited thereto.

<Embodiment 1> FIG. 1 shows the appearance of a tape-fixing type disposable diaper. (1) is a leak-proof sheet (back sheet), and a tape (2) ( 2) is fixed, and is connected to both ventral sides when used. (3) shows an absorber, (4) shows leg gathers, and three-dimensional gathers (5) and (5 ') inside and outside the leg gathers (4) are installed so as to surround both sides of the absorber (3). It is formed in an upright state by an elastic body. The inner and outer three-dimensional gathers (5) and (5 ') are united with one or two composite sheets (5-1) at the center corresponding to the crotch, and the dorsal and ventral branch points (5-
2) From (5-3), internal elastic bodies are respectively guided to form laterally branched inner and outer gathers (5) and (5 ').

<Embodiment 2> FIG. 2 schematically shows the structure of the inner and outer three-dimensional gathers (5) and (5 '). The inner and outer three-dimensional gathers (5) and (5') are in the center of the crotch. The parts are compositely integrated, and the inward elastic body (6) is branched and guided from the branch parts (5-1) and (5-2) inward and outward, respectively.

<Embodiment 3> FIG. 3 is a sectional view of the crotch part of FIG. 1, in which the inner three-dimensional gathers (5) and the outer three-dimensional gathers (5 ') are combined into two pieces by a joining means (7). It is integrated with the seat (5-1), and an elastic body (6) is internally provided at the top of each seat. In this example, the three-dimensional gathers (5) and (5 ') inside and outside are combined with a height difference, and the short inner three-dimensional gathers (5) are inclined inward so as to cover the absorber (3). On the contrary, the tall outer three-dimensional gathers (5 ') are inverted and inclined outward from the height of the joining position with the inner three-dimensional gathers (5) by the joining means (7).

<Embodiment 4> FIG. 4 shows another example of the crotch section of FIG. 1, in which the inner three-dimensional gather (5) and the outer three-dimensional gather (5 ') are formed of a single composite sheet (5-). 1)
, The composite sheet (5-1) is curved in a V shape, the lower half is inclined inward so as to cover the absorber (3), and the upper half is inverted to the outside. Is inclined to.
The elastic body (6) of the inner three-dimensional gather (5) is installed inside the top of the upper half, and the elastic body (6) of the outer three-dimensional gather (5 ') is installed inside the top of the upper half. ing.

<Embodiment 5> FIG. 5 shows an array shape in which the inner and outer three-dimensional gathers (5) and (5 ') open in Y-shape from the central portion in the longitudinal direction of the absorbent article toward both ends in the longitudinal direction. An example (A) having the same and an example (B) having an array shape in which the tip is opened in a Y shape toward either the back side or the ventral side in the longitudinal direction are respectively shown. ing.

<Embodiment 6> FIGS. 6 and 7 show the structure of a solid gather.
There may be a plurality of elastic bodies (6) internally provided in each gather (5) (5 '). The elastic body (6) is preferably located near the free ends (apex) of the gathers (5) (5 '). The gathered cloth (5) (5 ') may be folded inside or outside.

Examples (C) to (H) schematically show the cross sections of the composite sheets in the central part of the crotch part of the inner and outer three-dimensional gathers (5) and (5 '). In the example (C), the three-dimensional gathers (5) and (5 ') having the same height are adhered on the entire surface,
In the example (D), the vicinity of the free end is non-adhered, and in the example (E), the height of the inner gather (5) is low and the height of the outer gather (5 ') is high, and the vicinity of the free end on one side is non-adhesive. Has become.

In the example (F), the outer gathers (5 ') are tall and the inner gathers (5) are short, and the example (G) is the inner and outer gathers (5) (5'). Is an example in which the heights of the inside and outside are made equal, and example (H) is an example in which the back of the inner gather (5) is made higher than the example (F).

[Brief description of drawings]

FIG. 1 is an external view of an absorbent article of the present invention.

FIG. 2 is a schematic diagram showing a configuration of a three-dimensional gather.

3 is an exemplary view of a crotch section of FIG. 1. FIG.

4 is another exemplary view of the crotch section of FIG. 1. FIG.

FIG. 5 is an exemplary view showing a Y-shaped plane shape of a three-dimensional gather. A A Y-shaped example before and after. B An example of a Y shape before or after.

FIG. 6 is a schematic diagram showing a configuration of a three-dimensional gather. C An exemplary view of whole surface adhesion. (Adhered state) D: An example of non-adhered areas near the free end. (Adhesive state) E An exemplary view in which the vicinity of the free end on one side is not adhered. (Adhesive state)

FIG. 7 is a schematic diagram showing the configuration of a three-dimensional gather. F An exemplary view in which the outside is high. (High and low states) FIG. (High and low states) H An exemplary view in which the inside is high. (High and low states)

[Explanation of symbols]

1 ... Leak prevention sheet 2 ... Stopping tape 3 ... Absorber 4 ... Leg gather 5 ... Inner solid gather 5 '... Outside three-dimensional gather 5-1 ... Composite part of inner and outer gathers 5-2 ... Branch point of inner and outer gathers (back side) 5-3 ... Branch point of inner and outer gathers (ventral side) 6 ... Elastic body 7 ... Complex means

Claims (11)

[Claims] 1. An absorbent article comprising a surface material, a leak-proof sheet, and an absorber, comprising two or more three-dimensional gathers, each of which has elastic members arranged on a sheet member such as a non-woven cloth or a film. At one or both ends of the longitudinal direction of the gather, the outer three-dimensional gathers guide their elastic members in the flap direction, and the inner three-dimensional gathers guide the elastic members in the absorber direction. An absorbent article characterized by being integrated as one three-dimensional gather in the central part. 2. An absorbent article comprising a surface material, a leakproof sheet, and an absorber, wherein two or more three-dimensional gathers in which elastic members are arranged on a sheet member such as a non-woven cloth or a film are provided in the longitudinal direction of the absorbent article. Each of the left and right three-dimensional gathers is provided on the left and right along the
One or more elastic members are guided in the width direction outer flap direction of the absorbent article, and the other one or more elastic members are guided in the width direction inner absorbent body direction, and the longitudinal direction center of the absorbent article is guided. In the absorbent article, two or more three-dimensional gathers on the left and right sides are integrated at least in part. 3. In the absorbent article in a developed state, two or more three-dimensional gathers on each of the left and right sides have a Y-shaped tip from the central portion in the longitudinal direction of the absorbent article toward one end or both ends in the longitudinal direction. The absorbent article according to claim 1 or 2, which has an array shape that is opened like a circle. 4. The left and right three-dimensional gathers are each composed of two or more sheets or one sheet which are joined to each other at the center of the crotch part of the absorbent article, and these are formed at the dorsal side and / or the ventral side. The absorbent article according to any one of claims 1 to 3, wherein the left and right sheets are branched into an outer sheet facing outward in the width direction and an inner sheet facing inward in the width direction, respectively, toward the ends in the longitudinal direction. 5. The absorbent article according to claim 1, wherein the elastic member provided on the outer three-dimensional gather is arranged in a stretched state up to the vicinity of the flap side edge. 6. The absorbent according to claim 1, wherein the positions of the inner and outer branches of the inner and outer three-dimensional gathers are located closer to the center side in the longitudinal direction than the longitudinal ends of the absorbent body. Goods. 7. The inner and outer three-dimensional gathers have the same height in both the inner three-dimensional gathers and the outer three-dimensional gathers, or the outer three-dimensional gathers are higher or lower than the inner three-dimensional gathers. The absorbent article described. 8. The absorbent article according to claim 1, wherein the inner and outer three-dimensional gathers are each made of a water repellent non-woven fabric. 9. The method according to claim 1, wherein one of the inner and outer three-dimensional gathers is made of a water-repellent non-woven fabric, and the rest is made of a hydrophilic non-woven fabric. The absorbent article described. 10. The absorbent article according to claim 1, wherein the absorbent article is a taped type or pants type disposable diaper, a urine absorbing pad or an incontinence pad. 11. A three-dimensional gather of the absorbent article according to any one of claims 1 to 10.