JPH0435663A - Disposable diaper - Google Patents

Abstract

PURPOSE:To wear easily and to recognize the inside excretion easily by connecting and fixing a pair of left side and right side flap pieces to the waist or the side flap pieces at the belly side to form a waist opening and a pair of left and right leg openings. CONSTITUTION:By opening tape fasteners 6 and 6 to the left and to the right, a waist opening 11 is opened, and by expanding flexible expanding/contracting members 15 at the side flap pieces 5A1 and 5C1 to close the waist opening 11 further, the left side and the right side leg openings 12 and 12 are opened. And after inserting the left and the right legs of a baby to the leg openings 12 and 12, extending flaps 5E and 5E not connected at both sides of waist parts 7 and 7 are pulled together to superpose the extending flaps 5E and 5E on the side flap pieces 5C2 and 5C2 at the belly side, and then the tape fasteners 6 and 6 are connected to the wearing areas 8 and 8 respectively, so as to wear a diaper. The inside of this thrawaway diaper 1 can be confirmed easily by removing the tape fasteners 6 and 6 from the wearing areas 8 and 8.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a disposable diaper used for infants, adults, or incontinent persons.

[Conventional technology]

Various disposable diapers have been proposed in the past. Among these, the main type of disposable diaper is comprised of a liquid-permeable top sheet, a liquid-impermeable back sheet, an absorbent body located between these two sheets, and a pair of left and right side flaps. It is of a so-called flat type in which fasteners (tape fasteners) disposed on both side edges of the side waist portion are fastened at the ventral region. Further, another type of flat disposable diaper 1 shown in FIG. 6 has a top sheet 2, a back sheet 3,
The absorbent body 4 and the side flaps 5.5 are provided, and the waist portions 5A and 5A on the back side of the side flaps 5.5 are extended longer in the width direction, and the extending portions are formed so as to cover the torso of the wearer. The tape fasteners 6.6 disposed on each extending portion can be fixed to the attachment region 8 formed on the waist portion 7 on the ventral side. In addition, the leg portion 5B and the waist portion 7 in the side flap 5.5
are each provided with elastic members 9 and 10 to improve the fit when worn (Japanese Patent Publication No. 52-402
No. 67).

Recently, so-called pants-type disposable diapers have been developed in which the edges of the ventral region and dorsal region of a pair of left and right side flaps are joined and fixed to each other to form a pair of left and right leg openings and a waist opening. The pants-type disposable diaper that has been proposed (Japanese Unexamined Patent Publication No. 61-207606) is constructed such that the leg openings and the waist opening are each elastically formed to fit the body shape. These pant-shaped disposable diapers can usually be worn by the wearer in a standing position, and can be used for toilet training to encourage infants to leave one diaper, or for incontinent or ambulatory diapers. Furthermore, such pants-type disposable diapers have a well-tailored appearance and are intended to be disposable clothing.

[Problem to be solved by the invention]

However, while conventional pants-type disposable diapers have a flexible fit for the active activities of older children, they have a limited size of leg openings and waist openings, making it difficult for fat to pass through easily. This poses a problem in that it becomes even more difficult to wear if the wearer is unable to do so and has to flap their legs. In addition, ordinary pants-type disposable diapers, regardless of whether they are for infants or adults, have the problem of forcing the wearer into an awkward posture when worn.

In addition, with conventional pants-type disposable diapers, it is not possible to easily check for excrement inside the diaper while it is being worn, and in order to check, it is necessary to rely on the wearer's declaration of intention to that effect.
Furthermore, since the disposable diaper is not equipped with a tape fastener, there is a problem in that when disposing of a used disposable diaper, it is impossible to roll it up and seal the inside and then fix it in the sealed state using a tape fastener.

Therefore, an object of the present invention is to enable the wearer to wear the garment without forcing him to take an unreasonable posture, to allow the wearer to easily wear the garment even by flapping his legs, and to easily confirm internal excretion. Another object of the present invention is to provide a disposable diaper that can contain excrement and dispose of it.

[Means to solve the problem]

As a result of various studies on the structure of pants-type disposable diapers, the present inventors have found that the above object can be achieved by creating a specific structure for the joints on both the left and right sides of the front and rear waist portions.

The present invention was made based on the above findings, and includes a liquid-permeable top sheet, a liquid-impermeable back sheet, an absorbent body located between these two sheets, and a width extending from both longitudinal edges of the absorbent body. In a disposable diaper having a pair of left and right side flaps extending outward in a direction, and an elastic elastic member forming gears on the leg portions of the pair of left and right side flaps, each of at least the dorsal waist portions of the pair of side flaps is provided. A notch is provided in the width direction to divide the pair of side flaps into at least two side flap pieces, and at least the left and right pair of side flap pieces are joined and fixed to the ventral waist part or side flap pieces to form a waistband. The present invention provides a disposable diaper characterized in that an opening and a pair of left and right leg openings are formed, and fastening means are provided on each of the unjoined side flap pieces.

[Effect]

According to the present invention, it is worn through the waist opening and through the pair of left and right leg openings in the same way as normal underwear.
The waist portion and/or the leg portions can be adjusted by fastening the respective fastening means provided on both sides of the waist portion and/or the leg portions.

〔Example〕

The present invention will be explained below based on the embodiments shown in FIGS. 1 to 5. In each figure, Figure 1 is a perspective view showing one embodiment of the disposable diaper of the present invention, and Figure 2 shows the partially broken surface side of an intermediate product developed from the disposable diaper shown in Figure 1. FIG. 3 is a plan view, FIG. 3 is a perspective view showing the disposable diaper shown in FIG. 1 being worn on an infant, and FIGS. 4 and 5 are second views showing other embodiments of the disposable diaper of the present invention. It is a figure equivalent figure.

The disposable diaper 1 of this embodiment is constructed as shown in FIG. , an absorbent body 4 that is fixed between these sheets 2.3 and absorbs excrement, and a first end edge on the dorsal side and a second end edge on the ventral side in the longitudinal direction of the absorbent body 4, respectively. A pair of left and right side flaps 5.5 extending outward in the width direction from both side edges, and an elastic elastic member 9.9 forming gears on each of the leg portions 5B, 5B of the pair of left and right side flaps 5.5. As described later, the dorsal waist part 7 and the ventral waist part 7 are partially joined and fixed at both ends to form a waist opening 11 and a pair of left and right leg openings 1.
2.12 are formed respectively. The side flap 5.5 is formed by overlapping the top sheet 2 and the back sheet 3 extending outward in the width direction from both side edges of the absorbent core 4, and forming the top sheet 2 and the back sheet 3 in the crotch area of the side flap 5.5 as shown in FIG. As shown, inwardly curved leg portions 5B, 5B are formed.

The disposable diaper 1 of this embodiment, as shown in FIG. A waist portion 5A is provided in a pair of side flaps 5.5.

5A is divided into two side flap pieces 5A, 5A, respectively. In addition, the pair of side flaps 5
．． A similar notch 14.14 is provided in the waist part 5C15C on the ventral side of 5C to form a pair of side flaps 5C15C.
is divided into two side flap pieces 5C+ and 50t. And the left and right side flap pieces 5A of the transgressions located on the leg parts 5B and 5B side and facing each other.
,,5A1 and left and right side flap pieces 5C on the ventral side
, , 5C, are joined to each other at respective joining portions 5D, 5D to form a waist opening 11 and a pair of left and right leg openings 12.12 (see FIG. 1).

In addition, an elastic elastic member 15.15 is disposed on the entire side flap piece 5A, 5At, giving elasticity to each side flap piece 5A, 5At, and making each side flap piece 5A, 5Az Each elastic elastic member 15.1 is configured to be able to expand and contract independently.
It is functionally preferable that the side flaps 5 can be expanded and contracted in the width direction when worn, and it is preferable that the side flaps 5A and 5C that are joined and fixed can be easily torn in the longitudinal direction. As a result, the disposable diaper 1 can be easily torn at the joints 5D, 5D without staining the wearer's skin, and the disposable diaper 1 can be easily taken off and disposed of. It is preferable that the elastic stretchable member 15 is provided along the entire length of each side flap piece 5AI, 5A in the extending direction and at least in a part of the width direction.

Further, the joint parts 5D, 5D are preferably made of, for example, a hot-melt adhesive or a material that can be joined by ultrasonic waves, and are preferably flexible to the touch even after joining. is preferably 2 to 100 cm, more preferably 15 to 50 cm.

In addition, a pair of unjoined side flap pieces 5At of betrayal,
Extended flaps 5E, 5E extending outward in the width direction are respectively joined to the side edges of 5Ag, and each extended flap 5E,
Fastening means (tape fasteners) 6.6 are provided on each of the 5 sides, and the tape fasteners 6.6 are attached to attachment areas 8.6 formed on both sides of the waist portion 70 on the ventral side.
The present disposable diaper 1 can be worn by being fastened to the diaper 8. It is preferable that the length of the adhesive surface of the tape fastener 6 is equal to or shorter than the extension length of the extension flap 5E. preferably has a strength that does not peel off from the adhered area 8 when worn, and has a strength of at least 6 per inch of width when pulled horizontally on a flat surface.
00-3000 grams, more preferably 1000-20
00 grams. Further, as the tape fastener 6 itself, it is preferable to use a material having elasticity. By using the tape fastener 6 having elasticity in this way, the disposable diaper 1 can be easily attached, and the fastening force of the tape fastener 6 is can be adjusted. 1000-1500g/stretchable tape material
It is preferable to use an elastic body that stretches 30 to 400% under a tensile force of am. It is preferable that there be.

Further, the extension length of the extension flap 5E is 5 to 100.
The average diameter is preferably 20 to 70 square centimeters, and even more preferably 25 to 50 square centimeters.

Further, in the disposable diaper 1 of this embodiment, the crotch area of the absorbent body 4 is formed in a embroidered hourglass shape, and the top sheet 2 and back sheet 3 also have the crotch area as described above in accordance with the shape of the absorbent body 4. (The leg portions 5B, 5B of each side flap 5.5 are curved. As shown in FIG. The leg gears 9.9 are stretched in such a manner that they can be contracted in a free state to form the leg gears shown in FIG. 1 and fit in the crotch area.

Incidentally, two or more tape fasteners 6 may be attached to each extending flap 5E.

Therefore, the top sheet 2 used in the disposable diaper 1 of this embodiment is preferably a liquid-permeable sheet that allows excrement to pass through to the absorbent body 4 and has a feel similar to that of underwear. As the sheet, for example, woven fabric, nonwoven fabric, porous film, etc. are preferable, and the top sheet 2
Water-repellent treatment can be applied by applying a hydrophobic compound such as silicone oil or paraffin wax to the periphery of the wood, or by applying a wood-loving compound such as alkyl phosphate ester in advance and washing the periphery with warm water. It is possible to prevent leakage due to overflow of urine, etc. at the periphery.

Further, the back sheet 3 used in the disposable diaper 1 of this embodiment is preferably a liquid-impermeable sheet that is made by adding a filler to a thermoplastic resin and stretching it, and is moisture permeable and liquid-impermeable to allow vapor to pass through, and has a feel similar to that of underwear. It is more preferable that
As such a liquid-impermeable sheet, for example, a composite material of a film and a woven fabric or a composite material of a film and a nonwoven fabric is preferable.

In addition, the absorbent body 4 used in the disposable diaper 1 of this embodiment is preferably one that uses a high-molecular water-absorbing polymer mainly composed of defibrating valves, or a mixture of a thermoplastic resin, cellulose fiber, and a high-molecular water-absorbing polymer. It is preferable that the high-molecular water-absorbing polymer be heat-treated.The high-molecular water-absorbing polymer may be present in any of the upper, middle, and lower layers, and may be mixed with the valve. Preferably, particles have the ability to absorb and retain more than twice as much liquid and have the property of gelling.
Examples of such high-molecular water-absorbing polymers include starch-acrylic acid (salt) graft copolymers, starch-acrylic acid (salt) graft copolymers,
Preferred are saponified products of acrylonitrile copolymers, crosslinked products of sodium carboxymethylcellulose, acrylic acid (salt) polymers, and the like.

The elastic elastic member 9.10 used in the disposable diaper 1 of this embodiment is preferably made of thread rubber, flat rubber, film-type rubber, or film-like foamed polyurethane.
It is preferable that the stress at 0% elongation is 70 to 100 grams, and the elastic stretchable member 15 is preferably of a nonwoven fabric type that has stretchability and air permeability.

Since the present disposable diaper 1 has the above-mentioned configuration, when wearing it, first, as shown in FIG. Each combined side flap piece 5
After stretching the elastic elastic members 15 in A and 5C and passing the infant's left and right legs through the left and right leg openings 12.12, the unjoined extension flaps 5E and 5E on both sides of the waist portion 7.7 are stretched. Pull each extension flap 5E, 5E
overlap each side flap piece 5C, 5Cz on the ventral side, and then attach each tape fastener 6.6.
It can be worn by fastening it to the attachment area 8.8.

Therefore, according to the disposable diaper 1 of this embodiment, there are two pairs of side flap pieces 5A whose upper ends are not joined! .

5C! The left and right legs are connected to the left and right leg openings 12 through the waist opening 11, which has become loose. 2, the ventral attachment area 8 is secured by means of a tape fastener 6.6.
．． The present disposable diaper 1 can be worn by simply fastening the tape fasteners 6.6 to 6. However, before fastening the tape fasteners 6.
2.12 is wide and there is plenty of room in these openings 11.12, so the wearer can easily put it on without having to force the wearer into an unreasonable posture, and the wearer can avoid flapping his or her legs. Even if you move vigorously, as long as you pass both your left and right legs through the wide waist opening 11, you can
It can be easily worn, and after wearing, the leg part 5B,
The entire circumference of the leg part from the elastic elastic member 9.15 that forms the entire circumference of 5B to the side flap pieces 5A, 5A, extends from the tape fastener 6.6 to the side flap pieces 5A, 5A.
, to the waist flap, which exhibits elasticity independent of the entire circumference of the waist portion, thereby ensuring sealing performance at the leg portions. Disposable diapers that are made of the same elastic stretchable material from the waist opening to the leg openings on both sides or the entire disposable diaper are already lined with cloth, but in this type of diaper, from the waist opening to the leg opening, Since the elastic stretchable member is integrated all the way to the leg openings, the stretching force of the legs due to the movement of both legs during walking etc. is transmitted to the waist area, promoting the slipping of the diaper, and vice versa. The waist circumference changes, and this change propagates to the legs, causing the diaper to slip off. However, the present disposable diaper 1 does not have the above-mentioned drawbacks because the elastic forces of the waist part and the leg parts function independently.Furthermore, the side flap pieces 5A on the leg opening side, Elastic elastic member 15 of each side flap piece 5At
．． By using materials with different elasticity as the material 15, the fit of the disposable diaper 1 can be optimized.

Further, in the disposable diaper 1 of this embodiment, the inside can be easily checked by removing the tape fastener 6.6 from the attachment area 8.8, and the side flaps 5A+, 5C, which are joined and fixed are Since it can be easily torn vertically, there is no need to pull the disposable diaper 1 down to the feet when taking it off.Therefore, the wearer's skin and clothes will not be soiled with excrement, and used diapers can be rolled up. After sealing the inside with tape fasteners 6.6, it can be disposed of as is.

Moreover, FIG. 4 is a diagram showing another embodiment of the present invention, in which the present disposable diaper 1 has side flap pieces 5A, 5A on the back side.
, are formed longer in the width direction than those of the above embodiment, while the ventral side flaps 5C15C are integrally shortened (extended) without forming cut portions in the width direction from both side edges of the absorbent body 40. That is, the sum of the length in the width direction of the dorsal side flap piece 5A and the length in the width direction of the ventral side flap piece 5C is the length of the side flap piece 5A of the transgressive side in the above embodiment. The length is approximately equal to the sum of the length in the width direction and the length in the width direction of the ventral side flap piece 5C.The leg portion 5B,
Each side flap piece 5A+, 5'A+ on the 5B side is joined to each narrow side flap 5C15C on the ventral side. The elastic elastic member 15.15 that imparts elasticity to each of the side flap pieces 5A, 5Ai may be provided over the entire length of each of the side flap pieces 5As, 5At in the extending direction and at least in a part of the width direction. Preferably, the width is 5 to 150 yam, more preferably 30 to 8 yam.
This is theory 0. Further, the absorbent body 4 is formed wide at the buttocks, and the other widths are the same, and two band-shaped elastic extensible members 9 are disposed along each side edge of the absorbent body 4. In addition, the entire waist portion 7 on the ventral side is covered with an attachment area 8.
is formed. Furthermore, the ventral side flaps 5C15C of the present disposable diaper 1 are omitted, and the side flap pieces 5Al of the betrayal are directly joined to the back sheet 3 and/or top sheet 2 located on the side edges of the absorbent body 4. Therefore, the same effects as the disposable diaper 1 of the above embodiment can be expected in this embodiment as well.

FIG. 5 is a diagram showing another embodiment of the disposable diaper of the present invention, in which the disposable diaper 1 has side flaps 5 on the back side.
A is divided into three parts each on the left and right, side flap pieces 5A+ on the leg opening 12 side and the waist opening ll side;
Tape fasteners 6A and 6B are provided on the extending flaps 5E and 5H in 5A, respectively, and a joint 5D of the central side flap piece 5A8 is joined and fixed to a joint 5D on the ventral side of the waist portion. Each side flap piece 5A
, 5Az, 5As are formed of breathable stretchable elastic members, and in particular, the side flap piece 5As on the side of the waist opening 1L is formed by extending the stretchable elastic member of the waist gears. The configuration other than the above is similar to each of the above embodiments. Therefore, in this embodiment as well, the same effects as the disposable diaper 1 of the above embodiment can be expected, and since the disposable diaper 1 is provided with two pairs of tape fasteners, the fastening part is long, and the disposable diaper 1 is suitable for adults. It is also suitable as a disposable diaper for incontinent people.

In addition, in the disposable diaper of the present invention, each of the pair of side flaps is divided into at least two side flap pieces by providing a widthwise notch in each of at least the waist portion of the pair of side flaps, and at least one pair of left and right side flaps. It is sufficient that the side flap pieces are joined and fixed to the ventral waist part to form a waist opening and a pair of left and right leg openings, and fastening means are provided on each of the unjoined side flap pieces. For infants, the side flap pieces located on the leg side are joined together, and for adults, the side flap is divided into three parts and two pairs of tape fasteners are installed on each side, depending on the length of the wearer's torso. It is preferable because it is compatible and can provide good fit.

However, the number of notches, the number of fastening means, the length of the side flap pieces, etc. are not limited to those in each of the above embodiments as long as they do not impair the diaper's function as a diaper.

〔Effect of the invention〕

In the disposable diaper of the present invention, each of the pair of side flaps is divided into at least two side flap pieces by providing a widthwise notch in each of the waist portions on the back side of the pair of side flaps, and at least one side flap piece is divided into at least two side flap pieces. The flap pieces are joined and fixed to the ventral waist part to form a pair of left and right leg openings, and the unjoined side flap pieces are each provided with joining means, so there is plenty of room for the waist opening and leg openings. This allows the wearer to easily put on the wearer without forcing him or her to take an unreasonable posture, and even when the wearer's legs are flapping. Furthermore, the disposable diaper of the present invention allows excrement inside the diaper to be easily checked by peeling off the fastening means, and the side flaps that are joined and fixed can be easily torn in the longitudinal direction at the joint. There is no need to pull it down to your feet when you take it off.
Therefore, the wearer's skin and clothes will not be soiled by excrement, and if the used item is rolled up, sealed inside, and secured with a fastening means, it can be disposed of with excrement wrapped around it. It is.

Furthermore, in the disposable diaper of the present invention, by imparting elasticity to each of the plurality of side flap pieces, the pestle at the waist opening and the leg openings independently expands and contracts, so that the sealing property at the waist opening and the leg openings is improved. can be made even more reliable.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of the disposable diaper of the present invention, FIG. 2 is a partially cutaway plan view showing the front side of an intermediate product developed from the disposable diaper shown in FIG. 1, and FIG. 1 is a perspective view showing a state in which the disposable diaper shown in FIG. 1 is worn by an infant, FIGS. 4 and 5 are views corresponding to FIG. 2 showing other embodiments of the disposable diaper of the present invention, and FIG. FIG. 1 is a perspective view showing a conventional disposable diaper. l; Disposable diaper 2; Top sheet 3; Back sheet 4; Absorber 5; Side flaps 5 A +, 5 Ax, 5 As; Side flap pieces 5C,, 5C! : Side flap piece 58i Leg part 6; Tape fastener (fastening means) 7; Waist part 9, 10, 15; Elastic elastic member 11; Waist opening 12: Leg opening 13, 14; Notch part

Claims (6)

[Claims] (1) A liquid-permeable top sheet, a liquid-impermeable back sheet, an absorbent body located between these two sheets, and a portion outside in the width direction from the first and second longitudinal edges of the absorbent body. A disposable diaper having a pair of left and right side flaps extending in the direction, and an elastic elastic member forming gathers on the leg portions of the pair of left and right side flaps, the waist portion of at least a first end edge of the pair of side flaps. The pair of side flaps are each divided into at least two side flap pieces by providing a notch in the width direction in each side, and at least the pair of left and right side flap pieces are joined and fixed to the ventral waist part or the side flap pieces to open the waist. 1. A disposable diaper comprising a pair of left and right leg openings, and fastening means provided on each unjoined side flap piece. (2) A disposable diaper for employment as claimed in claim (1), characterized in that the side flap piece provided with the fastening means is elasticized. (3) The disposable diaper according to claim (1) or (2), characterized in that the joined and fixed side flap pieces are given elasticity. (4) The disposable diaper according to claim (1) or (3), wherein the fastening means has elasticity. (5) Any one of claims (1) to (4), characterized in that elastic elastic members forming gathers are provided on the waist flaps extending outward in the longitudinal direction from the front and rear edges of the absorbent body. Disposable diapers listed in one of the above. (6) The disposable diaper according to claim (5), wherein the elastic stretchable member forming the gathers of the waist flap extends to the side flap piece on the side of the waist opening.