JPH04297256A - Disposable wearing article - Google Patents

Abstract

PURPOSE:To prevent spillage of excrement or the like effectively by attaching first and second elastic members to first and second barrier flaps to form a number of channels with numerous gathers crossing a pocket formed by the respective barrier flaps. CONSTITUTION:In a disposable diaper 10, a body part thereof is made up of a liquid permeable internal sheet 11, a liquid impermeable external sheet 12 and a liquid absorbable core 13 while first and second liquid barrier flaps 14 and 15 are arranged on both sides of the body part. In this case, first elastic members 181-183 extending longitudinally sideways with an interval are attached to the center of the first liquid barrier flap 14 between internal and external sheets 16 and 17 thereof. A second elastic member 20 is attached to a free rim of the second barrier flap 15 in a sleeve 19 thereof. Moreover, an opposed end part of the second liquid barrier flap 15 is fixed on the internal sheet 16 of the first liquid barrier flap 14 to form a pocket 23 therebetween.

Description

[Detailed description of the invention]

0001

[Field of Industrial Application] This invention relates to disposable wearable articles for receiving body excrement, and more specifically, the articles are arranged vertically on opposite sides and have a tendency to rise toward the body due to elastic contraction force. The present invention relates to a disposable wearing article having a plurality of flaps.

0002

[Prior Art] Conventionally, in Japanese Patent Application Laid-Open No. 62-250201 regarding wearing articles such as disposable diapers, opposing side edges of a liquid-absorbing core interposed between a liquid-permeable inner sheet and a liquid-impermeable outer sheet are disclosed. a gasket cuff extending outward from the gasket cuff and having an elastic member attached thereto; and a barrier cuff having a tendency to branch from the upper surface of the gasket cuff on the inside of the elastic member and rise from the branched edge by the contractile force of the elastic member attached to the free edge of the cuff. A device comprising the following is disclosed. The gasket cuffs press against the wearer's thighs. The barrier cuffs are fixed at opposite ends in the longitudinal direction in a state in which the barrier cuffs are folded inward, and the central portion thereof has a tendency to rise due to its contractile force, and the free edge of the central portion presses against the wearer's thigh root. . In addition, a wearable article with almost the same structure using this technology is disclosed in British Patent No. 2161.
It is also disclosed in the 059 specification.

0003

[Problem to be solved by the invention] JP-A-62-2502
According to the technique described in Japanese Patent No. 01, the barrier cuffs form a channel for receiving excrement. However, in order for the channel to be formed, the elastic member attached to the barrier cuff needs to contract to a certain extent as the wearing condition of the wearing article loosens to a certain extent. This is because the barrier cuffs are fixed at their longitudinally opposite ends when folded inward, so when the article is in a relatively tight fit around the wearer's crotch, or when the wearer is folding both thighs. When closed, the barrier cuff resists the rising tendency due to the contraction force of its elastic member and falls inward due to the pressure of the thigh against the barrier cuff, and as a result, the opening edge of the channel is closed. This is because it may not open sufficiently. During such wearing, it is not uncommon for the opening of the channel to close or not open sufficiently, which would prevent waste material from being introduced into the channel.

Furthermore, in order for the barrier cuff to perform its function satisfactorily, it is necessary that its free edge always be in stable pressure contact with the root of the thigh. However, if the pressure contact force is strong and the pressure contact continues for a relatively long time, there are problems such as pressure marks being left on the pressure contact portion or pain.

[0005] An object of the present invention is to solve the above problem by devising the arrangement of the elastic members in the gasket cuffs and the stretching stress of the elastic members in the gasket cuffs and the barrier cuffs.

[0006]

[Means for Solving the Problems] In order to achieve the above-mentioned object, the wearing article according to the present invention has a liquid-absorbing core located between a liquid-permeable inner sheet and a liquid-impermeable outer sheet on the opposite side thereof. The present invention is directed to a disposable wearing article that includes a first liquid barrier flap that extends outward from the top and has elastic contractibility, and a second liquid barrier flap that branches from the upper surface of the first liquid barrier flap and has elastic contractility.

[0007] In the first liquid barrier flap, a strip of the first elastic member is attached along the branching edge of the second liquid barrier flap from the upper surface of the first liquid barrier flap, and further extends from at least the branching edge. At least one second elastic member is attached to the inner side of the elastic member, spaced apart from the first elastic member.

In a preferred embodiment, the elastic tension stress of the second liquid barrier flap is made weaker than the elastic tension stress of the first liquid barrier flap, and the stiffness of the second liquid barrier flap is lower than the elastic tension stress of the first liquid barrier flap. and the distance between the free edge and the branched edge is at least 25 mm, and the elastic tension stress of the first elastic member is made stronger than the elastic tension stress of the second elastic member.

[0009]

[Function] The wearing article according to the present invention having the above structure has the following features:
In the worn state, the elastic region of the first liquid barrier flap is in relatively strong elastic pressure contact with the wearer's thigh, and the elastic free edge of the second liquid barrier flap is elastically in contact with the thigh of the wearer. A pocket is formed between the first and second liquid barrier flaps to receive excrement. The pocket has a plurality of gathers across the pocket forming a plurality of channels extending in the transverse direction even when the second liquid barrier flap is pressed toward the first liquid barrier flap by pressure contact by the wearer's thigh. and open the mouth. Excrement is efficiently introduced into the pocket from its respective opening along each of the numerous channels.

0010

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the wearing article according to the present invention will be described below with reference to the drawings, taking a disposable diaper as an example.

As shown in FIGS. 1 and 2, the diaper 10 includes a liquid-permeable inner sheet 11, a liquid-impermeable outer sheet 12, a liquid-absorbing core 13, and a first liquid layer located on both sides. It has a barrier flap 14 and a second liquid barrier flap 15. The first liquid barrier flap 14 includes inner and outer sheet portions 16 and 1 that extend outwardly from the outer edge of the core 13 and are joined to each other by adhesive or welding (including ultrasonic welding).
It consists of 7. The outer sheet portion 17 extends further outward than the inner sheet portion 16.

Approximately in the central region of the first liquid barrier flap 14 are elastic members 181 extending in the vertical direction and spaced apart in the horizontal direction.
, 182, 183 are attached between the inner and outer sheet portions 16, 17 under their longitudinal extension. The elastic members 181, 182, and 183 have substantially the same elongation stress, but these elongation stresses are stronger in the outermost elastic member 181 than in the other elastic members 1.
82 and 183 may be weakened, or the elastic member 181 may be gradually weakened from the elastic member 183.

The second liquid barrier flap 15 consists of a breathable, water-repellent sheet 18, which extends over the first liquid barrier so that its substantially outer area overlaps the outer edge of the inner sheet portion 16 and the outer area of the outer sheet portion 17. The bent edge, that is, the branched edge 21 from the upper surface of the first liquid barrier flap 14 is joined to the upper surface of the flap 14 by adhesive or welding (including ultrasonic welding).
It is located along the line of the elastic member 181, which is the outermost one of the elastic members 181, 182, and 183. At the free edge of the second liquid barrier flap 15, an elastic member 20 is mounted within a sleeve portion 19 formed from a portion of the second liquid barrier flap 15 under tension in its longitudinal direction. The second liquid barrier flap 15 has a tendency to rise upward using the branch edge 21 as a fulcrum due to the elastic member 20's elastic force. The second liquid barrier flap 15 is attached to the first liquid barrier flap 14 by adhesive or welding (including ultrasonic welding) at its longitudinally opposite ends 22 in the raised state and inwardly folded state. is secured to the inner sheet portion 16 of the first and second liquid barrier flaps 14,
A pocket 23 is formed between 15. When the second liquid barrier flap 15 has its center portion between its lengthwise opposite ends 22 raised up with the aforementioned rising tendency,
The pocket 23 opens, but when it is stretched almost to its limit in the length direction, it collapses completely inward, and the pocket 23 opens.
is closed.

Although not shown, the second liquid barrier flap 1
The width of the second liquid barrier flap 15 may be shaped or mounted such that its free edge is located above the core 13 when the flap 5 is folded inwards.

Additionally, first and second liquid barrier flaps 14
, 15 have contracted to a certain extent due to the contraction force of the elastic members 181, 182, 183, 20, wrinkles ( Gathers) form a number of channels 24. These channels 24 are connected to the second liquid barrier flap 1
5 falls inward and its free edge becomes the first liquid barrier flap 1.
4, it is extremely effective for introducing excrement into the pocket 23 through the opening of each channel 24. Such a channel 24 is such that the elastic members 181 , 182 , 183 are located in the first liquid barrier flap 14 inward from the branching edge 21 , and the elastic members 181 , 183
is located at the branch edge 21 and cooperates with the elastic member 20 to contract the entire second liquid barrier flap 15, thereby forming the second liquid barrier flap more effectively.

The tensile stress of the second liquid barrier flap 15 is:
Even if the second liquid barrier flap 15 is contracted and pressed against the wearer's skin for a relatively long period of time, the first liquid barrier flap It is made weaker than the tensile stress of No. 14. Generally, the tensile stress of the elastic members 181, 182, 183 is set to 100 to 300 g. Even if the diaper 10 or the torso or thigh moves, the second part presses against the base of the thigh.
The width (height) between the branching edge 21 and the free edge of the second liquid barrier flap 15 is such that the movement of the free edge of the second liquid barrier flap 15 is not transmitted to the free edge and the movement is absorbed or reduced. ) dimensions are 25 to 50 mm, and the rigidity of the second liquid barrier flap 15 is greater than that of the first liquid barrier flap 14.
has been lower than that of. For example, the measured values according to JIS (Japanese Industrial Standards)-P8143 in the length direction and width direction of the first and second liquid barrier flaps 14 and 15 are as follows:
The lengths are set to 100 mm or less and 60 mm or less, respectively. 1st
The measured value of the liquid barrier flap 14 is almost the same as that of the side flaps of conventional disposable diapers.

The core 13 is covered with a liquid-absorbing tissue 25 on its bottom surface and both sides, and with a liquid-resistant and liquid-permeable tissue 26 on its top surface. These tissues 25, 26
performs the shape-retaining function of the core 13, and the tissue 26 serves as the core 1
3. It functions to prevent backflow leaching of excretory fluid absorbed into the membrane.

In the embodiment shown in FIG.
81 is located outside the branch edge 21 and the elastic member 182
is located at the branching edge 21, and is otherwise substantially the same as the embodiment shown in FIG.

As shown in FIG. 1, the diaper 10 has a tape fastener 27 coated with a pressure-sensitive adhesive attached to the first liquid barrier flap 14 on the back side. The diaper 10 can be assembled and worn by bonding the free ends of the tape fasteners 27 to the outer sheet 12 on the front side.

The inner sheet 11 is made of a fibrous nonwoven fabric, a porous plastic film, etc., and the outer sheet 12 is made of a plastic film, a laminate sheet of the film and a nonwoven fabric, or the like. In the case of this laminate sheet, the nonwoven fabric is used on the outer surface. Also,
The plastic film used as the outer sheet 12 is preferably breathable and liquid-impermeable. The core 13 is made of a mat-like material in which fluff pulp is mixed or not mixed with superabsorbent polymer particles, and at least the upper and lower surfaces thereof are covered with water-permeable sheets, and has a form made of such a material. Therefore, it is semi-rigid. Of course, the core 13 is connected to the inner sheet 11 and/or the outer sheet 1.
2 with adhesive in a relatively immovable manner. Elastic member 181
, 182, 183, and 20 are thread-like or ribbon-like rubber elastic materials. For the second liquid barrier flap 15, a spunbond nonwoven fabric treated with a water repellent is used.

In the assembled state of the diaper 10 having the above structure, the second liquid barrier flap 15 has a branched edge 21 due to the contraction force of the elastic member 20 located at its free edge.
It rises upward (towards the wearer's body) using the fulcrum line, and its free edge presses against the vicinity of the base of the thigh.

[0022]

According to the invention as set forth in claim 1, the first and second liquid barrier flaps form a large number of channels with the wrinkles that cross the pockets formed by the elastic members. , and is formed even when the second liquid barrier flap falls inward and its free edge is in contact with the top surface of the first liquid barrier flap, allowing the waste to be introduced into the pocket through the opening of each channel and the waste to be removed. leakage can be effectively prevented.

According to the invention as set forth in claims 2 and 3, since the tensile stress of the second liquid barrier flap is made weaker than that of the first liquid barrier flap, the skin of the wearer of the second liquid barrier flap is Even if the pressure contact is carried out for a relatively long time, the pressure contact part will not be left with a pressure contact mark or cause any pain. Further, even if the article, the torso, or the thigh moves, the movement is not transmitted to the free edge of the second liquid barrier flap that presses against the root of the thigh, and the movement is absorbed or attenuated. Therefore, the state in which the free edge of the second liquid barrier flap is stably pressed against the thigh root is maintained.

According to the fourth aspect of the invention, the channel is formed more effectively.

[Brief explanation of drawings]

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

FIG. 2 is a sectional view of the flap portion of the diaper.

FIG. 3 is a sectional view of a diaper of another embodiment corresponding to FIG. 2;

FIG. 4 is a partially sectional perspective view illustrating pockets and channels in the flap portion.

[Explanation of symbols]

10 Diaper 11 Inner sheet 12 Outer sheet 13 Core 14 First liquid barrier flap 15 Second liquid barrier flap 181, 182, 183, 20 Elastic member 21 Branch edge

Claims (4)

[Claims] 1. A first liquid barrier flap having elastic contractility and extending outward from the opposite side of a liquid-absorbing core located between a liquid-permeable inner sheet and a liquid-impermeable outer sheet; In the disposable wearing article, the second liquid barrier flap is branched from the upper surface of the liquid barrier flap and has elastic contractibility, and in the first liquid barrier flap, the second liquid flows from the upper surface of the first liquid barrier flap. a strip of first elastic member is attached along the branching edge of the barrier flap;
The wearing article further comprises at least one second elastic member attached at least on the inner side of the branch edge and spaced apart from the first elastic member. 2. The wearing article according to claim 1, wherein the elastic tension stress of the second liquid barrier flap is made weaker than the elastic tension stress of the first liquid barrier flap. 3. The stiffness of the second liquid barrier flap is lower than the stiffness of the first liquid barrier flap, and the distance between the free edge and the branch edge is at least 25 mm.
The wearing article according to claim 1, wherein the wearing article is made of: 4. The wearing article according to claim 1, wherein the elastic stretching stress of the first elastic member is made stronger than the elastic stretching stress of the second elastic member.