JPH084019Y2 - Disposable wearing articles - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disposable wearing article for receiving body exudates, and more specifically, it is arranged in the longitudinal direction on the opposite side of the article and is prone to rise to the body side by elastic contraction force. A disposable wearing article having a plurality of flaps having

[0002]

2. Description of the Related Art Conventionally, in Japanese Unexamined Patent Publication No. 62-250201, which relates to a wearing article such as a disposable diaper, opposite side edges of a liquid-absorbent core interposed between a liquid-permeable inner sheet and a liquid-impermeable outer sheet. From the upper surface of the base flap on the inside of the elastic member and the elastic member attached to its free edge, and rises up from that branch edge What is provided with the branch flap (barrier cuffs) which has a tendency is disclosed. The base flap is pressed against the thigh of the wearer. The branch flap is fixed at the longitudinally opposite ends in a state of being folded inward, the central portion thereof has a propensity to rise due to the contracting force, and the free edge of the central portion is pressed against the thigh root of the wearer. To do.

[0003]

The base flap is formed in a plane and, like the flap of a known disposable diaper, is gently curved to the thigh side by its contracting force and is pressed against it in a plane. Nothing more. Therefore, when the excrement crosses the branch flap to the outside, the excrement easily leaks from the outer edge of the base flap.

[0004]

According to the present invention, another flap is provided on the outside of the branch flap so as to be able to rise up by an elastic contraction force to prevent the leakage, and at the same time, the branch flap is moved from its outer surface to its inner surface. The wearing article is configured so that the liquid-permeable holes that allow only permeation are provided, and the excreted liquid existing between the both flaps is absorbed by the backflow from the liquid-permeable holes.

Specifically, this is the case. That is, on the opposite side of the liquid-absorbent core located between the liquid-permeable inner sheet and the liquid-impermeable outer sheet, the first and second branch flaps, which are arranged in the longitudinal direction and have elastic contractibility, are arranged. Prepare The first
The branch flap is branched on the opposite side of the core and is given a tendency to rise from the branch edge by its elastic contraction force, and the second branch flap is branched inside the branch edge of the first branch flap. The contracting force gives a tendency to rise from the branch edge. The second branch flap is composed of a liquid-impermeable sheet, and is capable of liquid permeation from the outer side surface to the inner side surface of the second branch flap and difficult or impervious to liquid permeation from the inner side surface to the outer side surface. It is possible to provide tapered liquid-permeable holes having a gradually decreasing diameter from the outer surface to the inner surface at given intervals. Furthermore, the amount of the second branch flap
The width dimension between the cross edge and its opposite free edge is
Note The branch edge of the first branch flap and its freedom to face it
It is made larger than the width dimension between the edge.

[0006]

The action of the wearing article according to the present invention having the above-mentioned structure is as follows.
In the worn state, the free edge of the first branch flap elastically presses against the wearer's thigh, and the free edge of the second branch flap elastically presses against the wearer's thigh root. Second for some reason
The excreted liquid that has passed over the branch flap to the outside and is interposed between the first and second branch flaps is absorbed by the liquid-absorbent core from the liquid-permeable hole of the second branch flap.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The following is a description of an embodiment of a wearing article according to the present invention, taking a disposable diaper as an example, with reference to the drawings.

As shown in FIGS. 1 to 3, a diaper 10 is provided.
Is a liquid-permeable inner sheet 11 and a liquid-impermeable outer sheet 12
And a liquid-absorbent core 13 and a base flap 14, a first branch flap 15 and a second branch flap 16 which are respectively located on both sides. The base flap 14 is composed of inner and outer surface sheet portions 17 and 18 which extend outward from the outer edge of the core 13 and are joined to each other by adhesive or welding (including ultrasonic welding).

The first and second branch flaps 15 and 16 are
The sheet 19 is formed, and its substantially central portion is joined to the upper surface of the base flap 14 by an adhesive or welding (including ultrasonic welding). Further, the first branch flap 15 is used for the seat 1
In the free edge of the sleeve part 20 formed from a part of 9
Elastic member 21 attached under its lengthwise extension
Elastically expanded and contracted by the base flap 1
4 has a tendency to rise upward with the branch edge 22 on the fulcrum 4 as a fulcrum. The second branch flap 16 is elastically expanded / contracted by another elastic member 24 attached to the sleeve portion 23 formed at the free edge while extending in the lengthwise direction, and the elastic expansion / contraction force causes the base flap to expand. On 14,
It has a propensity to stand up with the branch edge 22 and another branch edge 25 appropriately separated inward as a fulcrum. The first branch flap 15 is joined and fixed on the base flap 14 with an adhesive or welding (including ultrasonic welding) at the longitudinally opposite ends 26 thereof in a raised state and in a state of being folded inward. ing. However, the first branch flap 15
It may be joined and fixed onto the base flap 14 at its longitudinally opposed end portions 26 in a raised state and in a state of being tilted outward. On the other hand, the second branch flap 16
Is in the state of getting up and lying down,
It is bonded and fixed on the base flap 14 and the core 13 by an adhesive or welding (including ultrasonic welding) at the ends 27 facing each other in the longitudinal direction, whereby a relatively deep pocket 33 is formed.
Are formed. First and second branch flaps 15,1
6 has the above-mentioned rising tendency in the central portion between the respective length-direction opposing end portions 26 and 27, but when pulled in the length direction to a tensile limit, it falls inward.
Of course, when the first branch flap 15 is joined and fixed on the base flap 14 at the lengthwise opposing end portions 26 in the upright state and in the state of being tilted outward, the first branch flap 15 has its lengthwise direction. When it is pulled to the tension limit, it falls outward.

As shown in FIG. 9, the second branch flap 16
Is a liquid impermeable outer sheet 19b ₁ and a liquid impermeable inner sheet 1
It consists of 9b ₂ . The second branch flap 16 has a large opening 34a on the outer surface thereof and a small opening 3 on the inner surface thereof.
4b taper-shaped liquid permeation hole 34 having a gradually decreasing diameter
Are provided at given intervals. The liquid permeation holes 34 are formed to have a size that allows liquid permeation from the large opening 34a to the small opening 34b and that liquid permeation from the small opening 34b to the large opening 34a is difficult or impossible. ing. That is, the diameter of the large opening 34a is preferably 0.2 to 3 mm, and the diameter of the small opening 34b is preferably 0.15 to 1.5 mm. A plastic film, a so-called melt-blown nonwoven fabric, or the like is used as the outer sheet 19b ₁ , and a hydrophilic or hydrophobic nonwoven fabric or a hydrophobic nonwoven fabric treated with a surfactant is used as the inner sheet 19b ₂ . However, the inner sheet 19
b ₂ is not essential to the construction of the second branch flap 16.

The tensile stress of the second branch flap 16 is the second
Even if contraction pressure contact of the branch flap 16 with respect to the wearer's skin is applied for a relatively long time, the tensile stress of the first branch flap 15 is prevented so that a pressure contact mark or a pain is not given to the pressure contact local area. Has been made weaker than. Generally, the tensile stress of the elastic member 21 is set to 100 to 300 g. Even if the diaper 10 or the torso or thigh moves, the second branch flap 16 is pressed to the root of the thigh so that the movement thereof does not reach the free edge 29 of the second branch flap 16 and the movement is absorbed or diminished. Branch edge 2 of flap 16
Width (height) between 5 and its opposite free edge 29
The dimension W ₂ is the same as the branch edge 22 of the first branch flap 15 and this.
(Width) dimension W ₁ between the free edge 28 facing the
And the rigidity of the second branch flap 16 is lower than that of the first branch flap 15. For example, the width W ₁ of the first branch flap 15 is 20
～35Mm, width W ₂ of the second branch flap 16 30
The measurement value according to JIS-P8143 in the length direction and the width direction of the second branch flap 16 is selected to be 100 mm or less and 60 mm or less, respectively. The same measurement value in the first branch flap 15 is almost the same as that of the side flap of the disposable diaper that is generally used in the past. The width W ₃ between the two branch edges 22 and 25 is preferably not larger than the width W ₁ of the first branch flap 15. The branch edge 25 may be close to or in contact with the outer edge of the core 13.

In the base flap 14 of the embodiment shown in FIG. 4, the inner sheet portion 17 is formed narrower than the outer sheet portion 18, in other words, the outer sheet portion 18 is formed.
The base flap 14 is formed so that it extends from the outer edge of the inner sheet portion 17. Inner sheet part 17
A part of the sheet 19 forming the first and second branch flaps 15 and 16 is joined to the outer sheet portion 18 where is not located. In this embodiment, since the width of the inner sheet 11 is smaller than that of the outer sheet 12, the inner sheet 11 can be saved, and the outer sheet portion 18 is liquid-impermeable first and second branch flaps. Since the liquid-impermeable sheets 15 and 16 are joined without interposing the liquid-permeable inner sheet portion 17 therebetween, even if the body fluid permeates into the inner sheet portion 17, There is no leakage from the outer edge of the flap 14.

First and second embodiments shown in FIGS. 5 and 6
The branch flaps 15 and 16 have different sheets 19 from each other.
a, 19b. The water pressure resistance values (liquid impermeability) of the first and second branch flaps 15 and 16 are high in the former and low in the latter. First and second branch flaps 1
5 and 16 and other configurations of the base flap 14 are shown in FIG.
And substantially the same as the embodiment of FIG.

In the embodiment shown in FIG. 7, a relatively thin and highly flexible absorption is provided between the inner and outer sheet portions 17, 18 between the outer edge of the core 13 and the branch edge 22 of the first branch flap 15. The layer 30 is interposed. In the embodiment shown in FIG. 8, a relatively thin and highly flexible absorbent layer 31 is provided between the inner sheet portion 17 and the sheet 19b between the branch edges 22 and 25 of the first and second branch flaps 15 and 16. Intervenes. In these examples, at least both of the branch edges 22 and 25 are provided with a liquid absorbing property, and the body fluid that may temporarily stay between the first and second branch flaps 15 and 16 is retained. The absorption layers 30 and 31 are made to absorb.

As shown in FIG. 1, the diaper 10 has six tape fasteners 32, to which a pressure sensitive adhesive is applied, attached to the base flap 14 on the back side. The diaper 10 can be assembled and worn by adhering the free end of the tape fastener 32 to the outer sheet 12 on the front side.

As the inner sheet 11, a fibrous nonwoven fabric / porous plastic film or the like is used, and as the outer sheet 12, a plastic film or a laminate sheet of the film and the nonwoven fabric is used. In the case of this laminated sheet, the nonwoven fabric is used so that it is located on the outer surface. Also,
The plastic film as the outer sheet 12 preferably has a breathable liquid-impervious property. As the core 13, a fluff pulp with or without superabsorbent polymer particles mixed, at least the upper and lower surfaces of which are coated with a water-permeable sheet, is used, and has a form made of such a material. Therefore, it is semi-rigid. Naturally, the core 13 is relatively immovably bonded to the inner sheet 11 and / or the outer sheet 12 with an adhesive. Elastic member 2
As the materials 1 and 24, a thread-shaped or tape-shaped rubber, a tape-shaped plastic foam, a plastic film elastically stretchable by heat treatment, or the like is used. A nonwoven fabric treated with a water repellent is used for the first and second branch flaps 15 and 16. For the absorbent layers 30 and 31, a fluff pulp is used with or without a mixture of superabsorbent polymer particles.

In the assembled state of the diaper 10 having the above construction, as shown in FIGS. 1, 2 and 3, the first and second branch flaps 15 and 16 have their respective free edges 28,
Due to the elastic contraction force of the elastic members 21 and 24 located at 29, the branch edges 22 and 25 rise upward (toward the wearer's body) with the branch edges 22 and 25 as fulcrum lines. At this time, the first and second branch flaps 15 and 16 have their respective branch edges 2
Since the base flap 14 intersects with the base flap 14 or is bent in the base flap 14 at the portions 25 and 25, the elastic contraction force of the elastic members 21 and 24 is a strong force as it is, and the branch edge is formed. It is less likely to transmit from 22 and 25 to the outside of the base flap 14. Therefore, the branch edge 22,
It is less likely that the elastic contraction force of the elastic members 21 and 24 is strongly transmitted to the outer side portion of the base flap 14 and wrinkles are generated in the outer side portion as compared with the case where 25 is not present.

[0018]

According to the present invention, since the first and second branch flaps are provided, the outer edge of the article is cut off by the first branch flap even if the excrement exceeds the second branch flap. Outflow is prevented. The excreted liquid which has passed the second branch flap to the outside is interposed between the first and second branch flaps. In this case, the excreted liquid passes from the liquid permeation hole of the second branch flap to the second branch flap. It is absorbed by the core located inside. Therefore, the excreted liquid between the first and second branch flaps does not leak over the first branch flap to the outside. Further, the liquid permeation hole of the second branch flap also improves the air permeability thereof.

The width of the second branch flap is determined by the width of the first branch flap.
It is larger than that of the
The first branch flap when the
Even if it may move vertically,
The pressure contact of the free edge of the lap to the thigh root is relatively
Maintained stable. Therefore, the thigh root and the second branch hula
Between the free edge of the flap and the side of the first branch flap for excreted liquid.
There are few gaps that may cause leakage.

[Brief description of drawings]

FIG. 1 is an assembly diagram of a diaper showing an embodiment as an example of a disposable wearing article according to the present invention.

FIG. 2 is a perspective view from the inner surface where the diaper is developed.

FIG. 3 is a cross-sectional view of first and second branch flap portions.

FIG. 4 is a sectional view of another embodiment corresponding to FIG.

5 and 6 are cross-sectional views of still another embodiment corresponding to FIGS. 3 and 4, respectively.

7 and 8 are cross-sectional views of still another embodiment corresponding to FIGS. 3 and 4, respectively, in which a liquid absorbing layer is arranged on the base flap.

FIG. 9 is a partially enlarged cross-sectional view of a second branch flap.

[Explanation of symbols]

 10 Diaper 11 Inner surface sheet 12 Outer surface sheet 13 Core 15 First branch flap 16 Second branch flap 34 Liquid permeation hole

Claims (1)

[Scope of utility model registration request] 1. A first and a second elastically contractible side-by-side longitudinally arranged liquid-permeable inner surface sheet and liquid-impervious outer surface sheet which are opposite to a liquid-absorbent core located between them. In a disposable wearing article including a branch flap, the first branch flap has a propensity to branch on the opposite side of the core and rise from its branch edge by its elastic contraction force, and the second branch flap has the first branch flap. Of the second branch flap from the outer side surface to the inner side surface of the second branch flap. It is possible to permeate liquid and it is difficult or impossible to permeate from the inner surface to the outer surface, and taper-shaped liquid permeation holes with a gradually decreasing diameter from the outer surface to the inner surface are provided at given intervals. Have or
The branch edge of the second branch flap and the opposite edge of the branch edge.
The width dimension between it and the free edge of the
Than the width dimension between the cross edge and its opposite free edge
The wearing article is characterized in that it is enlarged .