JP2528092Y2 - Disposable diapers - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION INDUSTRIAL APPLICATION Field of the Invention The present invention relates to a disposable diaper, and aims at preventing leakage of urine and the like and improving the feeling of wearing the diaper.

2. Description of the Related Art Conventionally, there has been proposed a diaper for improving the sealing performance of gathers described in Japanese Patent Application Laid-Open No. 1-213402. In the diaper of this proposal, a non-fixed space that does not fix the topsheet and the leakproof layer is formed in a part of the width of the side flap composed of the topsheet and the leakproof layer. A thread-like elastic member is fixed to the top sheet side.
Then, at the time of mounting, the gathers are contracted in the length direction by the restoring force of the elastic member, and this contraction force is applied to the topsheet side, so that the topsheet is raised toward the wearer by the non-fixed interval. I am trying to do.

However, in the diaper of this proposal, the width of the side flap on the top sheet side and the width of the leakage prevention layer side are formed with the same dimensions. Therefore, in order to raise the gather, a relatively large width is required, the dimensional constraint of the side flap is large, an extra material is required, and much labor is required to form the gather. .

In addition, this diaper has insufficient gathers,
The state of contact between the wearer's skin and the gathers is poor, which may cause lateral leakage of urine and the like and impairs the feeling of wearing.

Further, as disclosed in Japanese Utility Model Application Laid-Open No. 62-88704, there is a polyurethane foam formed in an Ω shape to form a gather and fixed to a leak-proof layer, and a top portion thereof is brought into contact with an inner surface of a topsheet. I do.

This invention is excellent in forming a three-dimensional gather, but since the top is brought into contact with the inner surface of the topsheet, urine and the like in contact with the water-absorbing topsheet follow the topsheet in accordance with the Ω. Overcoming the gathers in the shape of a circle will result in lateral leakage. In addition, since the gathers are made of polyurethane foam, in order to increase the Ω-shaped restoring force, the whole must be made thick and strong, and the user's feeling of contact is poor. Further, in order to soften the contact feeling of the user, it is necessary to make the Ω-shaped restoring force weak, and it is difficult to maintain a three-dimensional shape.

Problem to be solved by the present invention The present invention is to solve the above-mentioned problem, and when the disposable diaper is attached to the wearer, an arc shape is formed in the length direction of the side flap or the end flap. A three-dimensional gather is formed so as to protrude from the skin, and the arc-shaped part of the gather is brought into contact with the skin to improve the sealability of the gather and improve the feeling of contact of the gather with the skin, thereby improving the feeling of wearing. Another object of the present invention is to make it possible to reliably prevent lateral leakage and to maintain a soft contact feeling to a user while maintaining strong restoring properties of the gathers.

Means for Solving the Problems In order to solve the problems described above, the present invention provides a device in which a liquid-absorbing absorbing layer is interposed between a liquid-permeable surface layer and a liquid-impermeable leakproof layer. In this case, side flaps and end flaps are protruded from the outer periphery of the absorbent layer, and a pair of adhesive portions are formed on the surface of the side flaps and the end flaps at regular intervals in the width direction. An elastic band-shaped gather formed of a water-repellent nonwoven fabric wider than the gap is fixed to the bonding portion on both sides in the width direction, and a plurality of elastic members are interposed in the band-shaped gather to reduce the restoring force of the elastic member. The band-shaped gathers are formed to have a stronger restoring force than the elastic members provided in both sides, and the central portion in the width direction of the band-shaped gathers is fixed to each flap so that the band-shaped gathers are arcuate. Protruding into It is formed in parallel with the length direction of the side flap or the end flap.

Further, the side flap or the end flap may be formed so that the surface layer and the leakage prevention layer extend and protrude outward from the absorption layer.

Further, the side flap or the end flap may be formed of a leak-proof layer extending and protruding outward from the absorbent layer, and a water-repellent nonwoven piece covering the surface of the projecting leak-proof layer.

In addition, the band-shaped gathers may be provided with folded sides at both ends in the length direction, and the folded sides may be bent inwardly facing each other and fixed to the surface of each flap.

Further, the band-shaped gather may be provided with folded sides at both ends in the length direction, and the folded piece may be fixed to the surface of each flap in the length direction of the band-shaped gather.

Further, the band-shaped gathers may be fixed to only the side flaps.

Further, the band-shaped gathers may be formed of a water-repellent nonwoven fabric.

Operation Since the present invention is configured as described above, when the diaper is worn, the band-shaped gathers protruding in an arc shape can contact the abdomen or the thighs of the wearer.

In this diaper, a pair of adhesive portions is formed on the surface of the side flap or the end flap at regular intervals in the width direction, and band-shaped gathers wider than between the pair of adhesive portions are bonded on both sides in the width direction. It is fixed to. Further, the band-shaped gather has one or more elastic members interposed, and a central portion in the width direction is not fixed to each flap.

Therefore, when the elastic member contracts in the length direction due to the restoring force, the band-shaped gathers are formed in a gentle arc shape on the front side with the contraction, so that the contact surface of the wearer's skin with the contracted surface. It becomes planar, increases the contact area, improves sealability, prevents lateral leakage of urine and the like, and improves the feeling of wearing.

In addition, since the band-shaped gathers are formed separately from the respective flaps and are fixed via the adhesive portions provided on the surfaces of the respective flaps, they are not restricted by the materials and dimensions of the side flaps and the end flaps. In addition, it is possible to easily form the band-shaped gathers, and to manufacture a simple diaper.

Further, by forming the band-shaped gathers separately from the flaps, even when the size between the bonded portions is small, the band-shaped gathers can be sufficiently raised and protruded in a high arc shape.

Further, if a plurality of elastic members are provided on the band-shaped gather, and in a state where the elastic member is attached to the band-shaped gather, the restoring force of the elastic member provided in the center direction is made stronger than the elastic members provided on both sides. In addition, the band-shaped gathers can be further protruded three-dimensionally, so that the diaper can be mounted well.

Also, if the band-like gathers are formed of a water-repellent nonwoven fabric,
Due to the water-repellent effect of the band-like gathers, urine and the like cannot pass through the band-like gathers, and it is possible to reliably prevent lateral leakage.

Further, if the side flaps and the end flaps are formed so that the surface layer and the leakage prevention layer extend and protrude outward from the absorption layer, the diaper can be easily formed, and the production can be performed at low cost.

In addition, if the side flap or the end flap is formed from a leak-proof layer extending outwardly from the absorbent layer and a water-repellent nonwoven piece covering the surface of the projecting leak-proof layer, a diaper can be formed. Although some trouble is required, the water-repellent nonwoven fabric can prevent lateral leakage of urine and the like.

Also, the band-shaped gathers are provided with folded sides at both ends in the length direction, and the folded sides are bent inwardly facing each other and fixed to the surface of each flap, so that both ends of the belt-like gathers are curved inwardly facing each other. As a result, the outer periphery of the absorbing layer can be raised up three-dimensionally and formed in a deep saucer-like shape, so that lateral leakage of urine and the like can be reliably prevented.

In addition, the band-shaped gathers are provided with folded sides at both ends in the length direction, and if this folded piece is fixed to the surface of each flap in the length direction of the band-shaped gather, the effect of preventing lateral leakage is slightly reduced, The belt-like gathers can be easily fixed.

In addition, if the band-shaped gathers are covered and fixed to the surface of each flap at both ends in the length direction with a coating piece formed of a water-repellent non-woven fabric, the water-repellent effect of the non-woven fabric prevents urine etc. from rising in the end flap direction It is possible to reliably prevent leakage.

Further, if the band-shaped gathers are fixed only to the side flaps, the high-performance band-shaped gathers are fixed to the side flaps where the lateral leakage of urine or the like is likely to occur, and the diaper can be manufactured at low cost. Further, in this case, a conventional low-cost gather may be simultaneously fixed to the end flap in which the lateral leakage hardly occurs.

An embodiment of the present invention will be described below with reference to the drawings.
(1) is a surface layer, formed of a liquid-permeable nonwoven fabric or the like, and a surface layer (1) and a leak-proof layer (2) between the liquid-impermeable polyethylene film and the like. A liquid absorbing layer (3) having a smaller area than that of (2) is interposed.

As shown in FIG. 2, a surface layer (1) and a leakage prevention layer (2) extend outward from the absorption layer (3) and protrude outward from the absorption layer (3) to form side flaps (4). ) And an end flap (5).

On the surfaces of the side flaps (4) and the end flaps (5), as shown in FIG. 3, bonding portions (6) and (6) provided by hot melt or the like are provided at a certain interval in the width direction. Has formed. Further, the pair of bonding portions (6)
(6) An elastic band-shaped gather (7) wider than the gap is formed of a water-repellent nonwoven fabric, and an elastic member (8) such as natural rubber or urethane rubber is attached to the band-shaped gather (1) in a range of 1 mm to 10 mm.
By fixing five of them at intervals of, the contact surface of the wearer with the skin is enlarged, and the feeling of wearing is improved.

Also, a plurality of elastic members (8) are provided, and when mounted on the band-shaped gathers (7), the elastic force of the elastic member (8) provided in the center direction is reduced by the elastic members (8) provided on both sides. ), The band-shaped gathers (7) can be further protruded three-dimensionally, so that the diaper (12) can be mounted well.

And even if the band-shaped gather (7) is formed of a soft material such as a water-repellent nonwoven fabric, it is possible to obtain a gather having strong three-dimensional resilience, and the contact area with the wearer's skin increases, The wearing feeling can be further improved, and the effect of preventing side leakage is ensured.

The band-shaped gathers (7) are fixed to the bonding portions (6) and (6) on both sides in the width direction, and the center portions in the width direction are not fixed to the flaps (4) and (5), while the side flaps are kept. (4) and the end flap (5) are formed parallel to the length direction, so that the band-shaped gather (7) can protrude in an arc shape when the elastic member (8) contracts. As shown in FIG. 5, the band-shaped gathers (7) are provided with folded pieces (10) at both ends in the longitudinal direction, and the folded pieces (10) are arranged in the longitudinal direction of the band-shaped gathers (7). It is fixed to the surface of each flap (4) (5) by a fixing part (9).

Also, in the figure, (11) is a fastening tape, which protrudes in the width direction from the back flap (5) on the back side and is formed so as to be able to be fastened to the outer surface of the leakproof layer (2) on the abdomen side in the mounted state. ing.

When the diaper (12) is worn in the above-structured diaper (12), the band-shaped gather (7) protruding in an arc shape can come into contact with the abdomen and the thigh of the wearer.

Therefore, the contact surface with the wearer's skin becomes planar,
By increasing the contact area, the sealing performance is improved, and side leakage of urine and the like is prevented, so that the wearing feeling can be improved.

In addition, the band-shaped gathers (7) are provided with respective flaps (4).
Since it is formed separately from (5) and is fixed via the bonding portions (6) (6) provided on the surface of each flap (4) (5), the side flap (4) and the end flap ( The band-shaped gathers (7) can be easily formed without being restricted by the material, dimensions and the like of 5), and a simple diaper (12) can be manufactured.

In addition, the band-shaped gathers (7) are connected to each flap (4) (5).
By forming them separately from each other, even when the size between the bonding portions (6) and (6) is small, it is possible to sufficiently raise the protrusions and protrude in a high arc shape.

Further, in the above-described embodiment, the side flap (4) or the end flap (5) is formed by extending the surface layer (1) and the leakage prevention layer (2) outward from the absorption layer (3). As shown in FIG. 4, the side flap (4) or the end flap (5) extends outward beyond the absorbing layer (3), And (2) a water-repellent nonwoven fabric piece (13) covering the surface. In this case, although the formation of the diaper (12) requires some trouble, the water-repellent nonwoven fabric piece (13) can prevent lateral leakage of urine and the like.

In the above embodiment, the band-shaped gathers (7) are provided with folded sides (10) at both ends in the length direction, and the folded pieces (10) are provided.
Is fixed to the surface of each flap (4) (5) in the longitudinal direction of the band-shaped gathers (7), but in another different embodiment, the folded pieces (10) provided on the band-shaped gathers (7) are provided. , First
As shown in the figure, it is bent inward and fixed. In this case, the both ends of the band-shaped gathers (7) are curved inward to face each other, and the outer periphery of the absorption layer (3) can be raised three-dimensionally to form a deep saucer, so that lateral leakage of urine and the like is reliably prevented. .

Further, as shown in a two-dot chain line in FIG. 1, the strip-shaped gathers (7) are covered and fixed at both ends in the length direction with a coating piece (14) formed of a water-repellent nonwoven fabric. Of the urine and the like in the direction of the end flap (5) can be prevented by the water repellent effect, and the leakage can be surely prevented.

Also, the band-shaped gathers (7) are connected to the side flaps (4).
If it is fixed only to the side flap (4) where side leakage of urine or the like easily occurs, a high-performance band-shaped gather (7) is fixed,
Inexpensive production of the diaper (12) becomes possible. Further, in this case, a conventional low-cost gather (15) may be simultaneously fixed to the end flap (5) which does not easily cause lateral leakage.

Effect of the present invention Since the present invention is configured as described above, when the diaper is attached, when the elastic member contracts to the length method due to the restoring force, the band-shaped gathers with this contraction,
It projects in a gentle arc shape on the surface side. Therefore, the contact surface with the wearer's skin becomes planar, the contact area is increased, the sealing property is improved, the lateral leakage of urine and the like is prevented, and the feeling of pressure can be reduced to improve the feeling of wearing.

In addition, a plurality of elastic members are provided, and the restoring force of the elastic member provided in the center direction in a state of being attached to the band-shaped gather,
If it is stronger than the elastic members provided on both sides, the band-shaped gathers can be projected more three-dimensionally, and the diaper can be mounted properly.

And even if the band-shaped gather is formed of a soft material such as a water-repellent nonwoven fabric, it is possible to obtain a gather having strong three-dimensional resilience, the contact area with the wearer's skin is increased, and the feeling of wearing is improved. It can be further improved and the effect of preventing side leakage is ensured.

Further, since the band-shaped gathers are fixed via the adhesive portions provided on the surface of each flap, the band-shaped gathers can be easily formed without being restricted by the materials and dimensions of the side flaps and the end flaps. And a simple diaper can be manufactured. Further, by forming in this manner, even when the size between the contact portions is small, the band-shaped gathers can be sufficiently raised and protruded in a high arc shape.

In addition, since the band-shaped gathers are formed independently without contacting the top portion with the topsheet, the body fluid such as urine does not cause side leakage through the topsheet, and a reliable side leakage prevention effect can be obtained. I can do it.

[Brief description of the drawings]

The drawings show an embodiment of the present invention. FIG. 1 is a perspective view, FIG. 2 is a plan view of another embodiment, FIG. The drawing is a cross-sectional view of a band-shaped gather of a different embodiment, and FIG. 5 is an enlarged cross-sectional view taken along the line BB of FIG. (1) Surface layer (2) Leak-proof layer (3) Absorbing layer (4) Side flap (5) End flap (6) Adhesive part (7) Band-shaped gather (8) Elastic member (10) Folded piece (13) Nonwoven fabric piece (14) Coated piece

Claims (7)

(57) [Scope of request for utility model registration] 1. A liquid-absorbent absorbing layer interposed between a liquid-permeable surface layer and a liquid-impermeable leakproof layer, wherein side flaps and end flaps are provided on the outer periphery of the absorbing layer. The side flaps and end flaps are formed on the surface of the side flaps or end flaps with a pair of adhesive portions formed at regular intervals in the width direction.
An elastic band-shaped gather formed of a water-repellent nonwoven fabric wider than between the pair of bonded portions is fixed to the bonded portion on both sides in the width direction, and a plurality of elastic members are interposed on the band-shaped gather. By making the restoring force of the member stronger than that of the elastic member made in both sides, the restoring force of the elastic member created in the center direction is made stronger, and the central part in the width direction of the band-shaped gather is fixed to each flap. A disposable diaper characterized in that a band-shaped gather is formed in an arc shape so as to be parallel to a length direction of a side flap or an end flap. 2. The disposable diaper according to claim 1, wherein the side flaps and the end flaps are formed by projecting the surface layer and the leakage preventing layer outwardly from the absorbing layer. 3. The side flap or the end flap is formed of a leak-proof layer extending outward from the absorbent layer and a water-repellent nonwoven piece covering the surface of the projecting leak-proof layer. The disposable diaper according to claim 1, characterized in that: 4. The use according to claim 1, wherein the band-shaped gathers are provided with folded sides at both ends in the length direction, and the folded sides are bent inwardly facing each other and fixed to the surface of each flap. Discarded diapers. 5. The band-shaped gather has a folded side provided at both ends in the length direction, and the folded piece is fixed to the surface of each flap in the length direction of the band-shaped gather. Disposable diapers. 6. The disposable diaper according to claim 1, wherein the band-shaped gathers are fixed at both ends in the longitudinal direction on the surface of each flap with a coating piece formed of a water-repellent nonwoven fabric. 7. The disposable diaper according to claim 1, wherein the band-shaped gathers are fixed only to the side flaps.