JPH05200059A - Absorbent article - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide an absorbent article which can maintain a breathability in the abdominal part while having a good wearing feeling. [Structure] A diaper pad 1 as an absorbent article according to the present invention has a liquid-permeable top sheet 2, a liquid-impermeable leak-proof sheet 3, and an absorber 4 located between the two sheets. The front portion 5 of the diaper pad 1 is curved toward the surface sheet 2 and both side edges 5b of the front portion are raised so that the diaper pad 1 is located at the urine position of the wearer when the front portion 5 is worn. It is characterized in that a cup-shaped concave portion 6 is formed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an absorbent article, and more specifically, it is used together with a diaper cover, a garment or underwear for an incontinent person who does not excrete much, or is an auxiliary for a disposable diaper for adults. The absorbent article used together with.

[0002]

2. Description of the Related Art Absorbent articles, which are used as auxiliary materials for diapers for incontinent persons or adults, have an absorbent body inside, for example, for men, they have already been formed into a tubular shape or a bag shape. Some things are provided. However, since such an absorbent article has a fixed size, has a feeling of pressure, and has a low absorption amount of body fluid such as urine, it cannot be applied to all wearers. ..

[0003] In these absorbent articles, the frequency of replacement is generally high, and in particular, incontinence pads are compact and easy to operate because they must be replaced by the wearer's confidence in a limited space such as a toilet. Is required. Therefore, in these absorbent articles, it is necessary for the absorbent body to be limited to an area that covers the vicinity of the crotch area, but to be surely mounted at the target position during mounting, and it is necessary that the displacement and displacement due to the movement during mounting do not easily occur. Has been done. Further, the cost is required to be low because the replacement frequency is higher than that of the pants type. However, conventional absorbent articles such as diaper pads focus on keeping costs low against the above-mentioned requirements, and most of them are surface materials, absorbers, and back materials cut into rectangular shapes of simple shapes. It was a combination of.

[0004]

However, since the absorbent article having such a simple shape is used, the conventional diaper pads and the like do not fit the complicated crotch shape,
There was a problem that a good fit property could not be obtained and it could cause leakage. On the other hand, actual Kaihei 2-1185
Japanese Unexamined Patent Publication No. 26 discloses a configuration in which a urinary incontinence absorbing pad cut into a complicated shape is formed and a recess is formed in the central portion thereof, but such a technique complicates the form and the configuration and increases the cost. There is a problem that Therefore, an object of the present invention is to provide an absorbent article that has excellent fitability, is easy to wear, and is low in cost.

[0005]

The present invention provides an absorbent article having a liquid-permeable surface sheet, a liquid-impermeable leak-proof sheet, and an absorbent body located between the both sheets, and a front portion of the absorbent article. Is curved toward the surface sheet and both side edges of the front portion are erected to form a cup-shaped recess at the urine position of the wearer in the front portion. The above object is achieved by providing

[0006]

When the absorbent article according to the present invention is used with a diaper cover garment or an undergarment, the cup-shaped concave portion at the front end is placed at the urination position and held on the body with these garments. When used together with a disposable diaper, the disposable diaper is similarly placed and mounted on the upper surface of the surface material. The cup-shaped concave portion three-dimensionally covers the body around the excretory opening, so that the fitting property of such a portion is enhanced and the excrement is reliably absorbed and leakage is prevented. In addition, such an absorbent article can form a cup-shaped concave portion in a simple process of bending a front portion and erecting a side edge of the front portion with respect to a prototype having a simple shape similar to a conventional one, thereby reducing manufacturing cost. Can be planned.

[0007]

The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Men's diaper pads will be used as an example of the absorbent article of the present invention. Figure 1
2 is a perspective view of a diaper pad according to an embodiment of the present invention, and FIG. 2 is a side view of the diaper pad shown in FIG.
3 (a) to 3 (c) are views sequentially showing a manufacturing process of the diaper pad shown in FIG. 1, in which an absorber is arranged between the surface sheet and the leak-proof sheet (a), and the front side edge is provided. The state (c) is shown in which an elastic elastic member is provided (b), the front side edge is folded back, and curved and erected on the front side. As shown in FIGS. 1 and 2, a diaper pad 1 as an absorbent article according to the present invention includes a liquid-permeable surface sheet 2, a liquid-impermeable leak-proof sheet 3, and a position between the two sheets. The diaper pad 1 has a front portion 5 curved toward the surface sheet 2 side and both side edges 5b of the front portion are erected so that the diaper pad 1 can be worn when worn on the front portion. It is characterized in that a cup-shaped concave portion 6 located at the urinating position of the person is formed.

The front part 5 is curved toward the surface sheet 2 side to form a cup-shaped recess 6, but the tip 5a stands up to a height H above the horizontal level h of the rear part 7. There is. The standing height H indicates a vertical distance from the surface of the leak-proof sheet 3 to the tip of the front portion 5, and is preferably 30 mm or more. This is because if it is less than 30 mm, it is difficult to three-dimensionally cover the male local area, which is the urination position. Even if the tip of the front part 5 is bent to the inside of the absorber to form a pocket, the standing height H is preferably 30 mm or more. The concave portion 6 has a curved front end 5a of the front portion 5 and
It is defined by being surrounded by three sides of the front portion 5 and the side edge portion 5b which are erected simultaneously with the bending. The cup-shaped concave portion 6 is formed by the elastic expansion / contraction member 9 described above, so that the tip 5 of the front portion 5 is formed.
It is formed by pulling a toward the rear portion 7 side and curving to be in an upright state, and at the same time, a portion inside by d from the side edge of the front portion 5 rises upward.

The recess 6 has a maximum depth d, and is gradually shallower toward the front and the rear from the maximum depth d. The dimension of the maximum depth d is preferably 20 to 100 mm. This is because if it is less than 20 mm, it is difficult to three-dimensionally cover the male local area, and if it is deeper than 100 mm, it is inferior in fit and bulky. In addition, around the absorber 4,
A flap 8a extending outward from the edge position of the absorber,
8b is formed, and the side flap 8 of the front portion 5 is formed.
Elastic stretchable members 9 and 9 are stretched on a and 8a.
The elastic stretchable member 9 is arranged from the end portion of the absorber 4 in the front portion 5 to a substantially central portion in the longitudinal direction. In this way, by tensioning the elastic member 9 on the side flaps, the front portion 5 is pulled so as to curve toward the surface sheet 2 side, and the side flaps 8a, 8a are erected to form the recessed portion 6. It Side flaps 8a, 8
The width of a is preferably 10 mm to 40 mm. If it is less than 10 mm, it is difficult to arrange a tape-like elastic expansion / contraction member, or it is not possible to obtain a sufficient depth. If it is more than 40 mm, the standing state becomes unstable and the fit is poor. Because.

Further, in this embodiment, the width A of the rear portion 7 located on the opposite side of the front portion 5 is the width B of the front portion 5.
Is formed wider than. That is, the front portion 5 has a width that is narrower toward the tip 5a thereof, and the rear portion 7 is formed so as to widen toward the end. In this way, by forming the width A of the rear portion 7 to be wide, the rear portion 7 in a natural state can be held substantially horizontal, and the standing of only the front portion 5 can be facilitated, and the volume of the absorber can be reduced. Since more can be taken, the absorption capacity of excrement can be increased. The width A of the rear portion 7 is preferably 120 to 400 mm, particularly preferably 150 to 250 mm. If it is less than 120 mm, sufficient standing up of only the front part cannot be achieved and the absorber 4
This is because the volume cannot be taken sufficiently. Also, 400
This is because if it is larger than mm, the volume of the absorber 4 can be made large, but it is bulky and the fitting property is poor.

The width B of the front part 5 is preferably 40 to 300 mm, particularly preferably 60 to 120 mm. This is because if it is less than 40 mm, it cannot cover the excretion position sufficiently. This is because if it is more than 300 mm, it becomes difficult to satisfy the fitting property. Next, the constituent materials will be described. The surface sheet 2 is preferably a liquid-permeable sheet that allows excrement to permeate into the absorbent body 4 and has a feeling similar to underwear. Examples of such a liquid-permeable sheet include woven cloth, nonwoven cloth, and porous material. A film or the like is preferable. Also, the top sheet 2
Water-repellent treatment is applied by a method of applying a hydrophobic compound such as a silicone-based oil agent or paraffin wax to the peripheral edge portion of, or a method of applying a hydrophilic compound such as an alkyl phosphate ester in advance and washing the peripheral edge with warm water. Leakage due to bleeding of urine or the like at the peripheral portion can be prevented.

The leak-proof sheet 3 is a liquid-impermeable sheet having moisture permeability that allows vapors that have been stretched by adding a filler to a thermoplastic resin, or a sheet that has a feel similar to underwear, for example,
A composite material of a film and a non-woven fabric, a composite material of a film and a woven fabric, or the like is used. As the absorbent body 4, it is preferable to use defibrated pulp as a main material together with a high molecular weight water-absorbing polymer, and in addition to this, heat-treat a mixture of a thermoplastic resin, cellulose fiber and a high molecular weight water-absorbing polymer. The location of the high-molecular water-absorbing polymer is as follows: upper layer, middle layer,
It may be any of the lower layers, or may be a mixture with pulp. The high molecular weight water-absorbing polymer is preferably in the form of particles having a retention property capable of absorbing and retaining a liquid of 20 times or more its own weight and having a gelling property. A starch-acrylic acid (salt) graft copolymer, a saponified starch-acrylonitrile copolymer, a crosslinked product of sodium carboxymethyl cellulose, an acrylic acid (salt) polymer, and the like are preferable. The shape is preferably an hourglass shape according to the wearer's body shape, but may be rectangular.

Next, the manufacturing process of the diaper pad of this embodiment will be described with reference to FIG. As shown in FIG. 3A, first, the prototype 10 is manufactured. The master 10 is formed in a simple rectangular shape and is easy to manufacture, and a conventional one can be used as it is as a master. That is, the prototype 10 is formed such that all of the topsheet 2, the leak-proof sheet 3 and the absorber 4 are formed in a simple shape of a substantially quadrangular shape and overlapped with each other. Flaps 8a and 8b are formed on one side. Next, as shown in FIG. 3B, elastic stretchable members 9 are stretched on the side flaps 8a, 8a located on both side edges of the prototype 10 in the longitudinal direction. As the elastic expansion / contraction member 9, an ordinary thread-shaped or band-shaped elastic material is used.

Subsequently, as shown in FIG. 3C, both side portions of the front portion 5 are bent inward along the first bending line 11, and the bent portion is bent to the second bending line 1.
Bend further outward along 2 and bend the folded part
Connect and fix with an adhesive or heat welding. Next, the operation of this embodiment will be described. The diaper pad 1 according to the present embodiment is worn by using a diaper cover, a disposable diaper, pants, or the like, and covering the diaper pad 1 with these. When the diaper pad 1 is worn, the cup-shaped recess 6 is covered so as to cover the abdominal urinary part, specifically, the male local area, and the rear part is put on the crotch and placed on the hip side. As described above, the diaper pad 1 of the present embodiment is
Since it can be mounted only by covering the concave portion 6 on the male part, it can be easily positioned and can be surely mounted by a simple operation. Further, the diaper pad 1 can three-dimensionally cover the urination portion and fit the complicated shape of the urination portion.

Since the cup-shaped concave portion 6 is covered on the male portion while wearing, positional deviation is unlikely to occur, and stable leakproofness can be achieved. When urinating, the urine position is covered by the recess 6, so that the urine can be reliably held in the recess 6 without leaking. Further, since the concave portion 6 is formed in a cup shape, even when a large amount of urine is discharged at one time, a weir is formed so that a large amount of urine is temporarily retained and sufficiently absorbed by the absorber 4. You can Further, since the absorber is unevenly provided in the concave portion 6 in the front part and the absorber can be arranged up to the wearer's buttocks where the rear part 7 is located, a large volume of the absorber can be secured and stable excrement. The absorption of can be secured. In the above-described embodiment, the diaper pad for men is used as an example, but the present invention can also be used for women. However, when it is used for women, the cup-shaped recess 6 may have a depth d that corresponds to the local area of the woman.

The present invention is not limited to the above-described embodiment, but can be variously modified without departing from the gist of the present invention. For example, the width A of the rear portion 7 opposite to the front portion 5 may be equal to or smaller than the width B of the front portion 5. With such a configuration, it is possible to reduce a feeling of strangeness in the crotch during wearing. The elastic expansion / contraction member 9 described above is not limited to being arranged in the side flaps, but may be arranged in the region of the absorber 4. The elastic expansion / contraction member 9 is not always necessary to form the curve in the front portion 5, and the cup-shaped concave portion 6 may be formed without using the elastic expansion / contraction member. Further, the cup-shaped concave portion 6 may be any one as long as the front portion side edge is erected and the front portion 5 forms the cup-shaped concave portion 6 without bending and fixing the front portion 5.

[0017]

The absorbent article of the present invention has excellent fitability, is easy to wear, and can reduce the manufacturing cost.

[Brief description of drawings]

FIG. 1 is a perspective view of a diaper pad according to an embodiment of the present invention.

FIG. 2 is a side view of the diaper pad shown in FIG.

FIG. 3 is a perspective view showing a manufacturing process of the diaper pad shown in FIG. 1.

[Explanation of symbols]

 1 Absorbent article (pad for diaper) 2 Surface sheet 3 Leak-prevention sheet 4 Absorber 5 Front part 6 Recessed part

Claims (4)

[Claims] 1. An absorbent article having a liquid-permeable surface sheet, a liquid-impermeable leak-proof sheet, and an absorbent body located between the both sheets, wherein a front part is curved toward the surface sheet side. The absorbent article is characterized in that a cup-shaped concave portion located at the urine position of the wearer is formed in the front portion by erecting both side edges of the front portion. 2. The absorbent article according to claim 1, wherein the width of the rear portion located on the side opposite to the front portion is different from the width of the front portion. 3. The absorbent article according to claim 2, wherein elastic elastic members are provided on both side edges of the absorbent body. 4. The absorbent article according to claim 3, wherein the elastic stretchable member is located at the front portion.