JPH03268753A - Disposable diaper - Google Patents

Abstract

PURPOSE:To obtain the disposable diaper excellent in wearing sense and fittingness even at the time of activity, and also, can hold or absorb surely various excretions in the lower part of the thigh by providing a second flap and an absorbing body along a side flap and/or a waist flap of the absorbing body. CONSTITUTION:A pair of second flaps extended out to the upper part of an absorbing body 4 from a pair of side flaps 5 are provided along each side flap 5, respectively, and in at least the lower area of the thigh of them, a second absorbing body 7 is provided, respectively. A second flap 6 consists of a second absorbing body 7, an elastic member 9, and a second surface sheet 8 for wrapping them, is joined and fixed to the outside of a surface sheet 2 through one end edge of the sheet concerned 8, and a band-like elastic member being freely flexible to the outside of a fixed part is joined and fixed to both of a reverse side sheet 3 and a second surface sheet and extended and provided, and constitutes the side flap 5. In such a way, by a second flag 6 having the absorbing body 7, the fittingness is improved, and also, a leakage preventive wall and a pocket part are formed in the lower part of the thigh and the waist part, nonabsorptive excretions are contained, and also, by cooperation with the absorbing body 4, absorptive excretions are absorbed and the leakage is prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a disposable diaper, and more particularly to a disposable diaper with excellent excrement storage properties and leak-proof properties.

[Conventional technology]

Various disposable diapers with improved leakage prevention mechanisms in the crotch region have been proposed. For example, Tokuko Sho 52-40
No. 267, JP-A-54-115939 and JP-A-52
Publication No. 120045 discloses a disposable diaper in which an elastic member is stretched in the longitudinal direction along the side edge, and gears are provided on the side edge in advance to make the diaper tightly fit against the wearer's crotch area to prevent leakage. is disclosed. Also, JP-A-59
No. 157301, No. 60-199903 and Utility Model No. 6
In No. 3-60405, a plurality of elastic members with different elongation rates are arranged on the side edges, so that the plurality of elastic members fit around the wearer's leg dimensions and follow the wearer's instructions. Disposable diapers are disclosed.

Also, JP-A-62-250201, JP-A-63-
No. 182401 Publication Otsuko places the elastic member 1. Disposable diapers have been disclosed in which the flaps have flexibility depending on the thickness and form a pocket structure.

(Problem to be solved by the invention) Shikijinakari, Japanese Patent Publication No. 40267/1983, Japanese Patent Application Laid-open No. 54/1983
-115939, JP-A-52-120045 and JP-A-59-157301, JP-A-60-199903
In all of the disposable diapers described in Japanese Utility Model Application Publication No. 63-60405, the stretching force of the elastic body is easily affected by the rigidity of the absorbent body, and the absorbent body twists due to the wearer's activity, resulting in elasticity 1)13. There was a mechanism that acts directly on the material and causes leakage in the crotch area.

Also, JP-A-62-250201 and JP-A-63
In the disposable diapers described in each of the -182401 publications, the cuffs that stand up to cover the -F side of the absorbent body are provided to improve the ability to contain excrement. In the case of diapers, no measures have been taken to prevent leakage when the wearer's body pressure is applied while containing excrement that is difficult to absorb.
For W, the only options were to improve the absorption performance of the top sheet that comes in contact with the body, or to improve the absorption performance of the absorbent body.

In any case, the disposable diapers disclosed so far do not have sufficient leak-proofing properties for difficult-to-absorb excrement such as feces, especially in the crotch region, and also have a fin-like property in the crotch region when worn. It has been extremely difficult to prevent excrement from leaking as it decreases with activity.

Therefore, the 1-1 object of the present invention is to provide excellent wear comfort and fit even during activities, and to securely store and retain difficult-to-absorb excrement such as feces in the crotch area without leaking. To provide a disposable diaper capable of absorbing absorbent excrement such as urine reliably at the crotch part.

[Failure to solve the problem]

The inventors of the present invention have conducted intensive research on the leakage prevention mechanism for conventional disposable diapers, especially M-absorbent excrement such as feces in the crotch area. I found out that it can be achieved.

The present invention was made based on -[-translation knowledge μ], and includes a liquid-permeable top sheet, a back m of a liquid-impermeable sheet, and an absorbent body disposed between these two sheets. , a disposable diaper each having a pair of side flaps and waist flaps extending outward from the periphery of the absorbent body,
- At least a pair of second flaps extending upwardly from the absorbent body are arranged along the pair of side flaps and/or the pair of waist flaps, and at least at the center in the longitudinal direction of the second flap. The present invention provides a disposable diaper characterized in that a second absorbent body is disposed in each region.

The present invention also provides a liquid-permeable surface seal 1, a liquid-impermeable back side notebook, an absorbent body disposed between these two saws 1, and a side surface extending toward the peripheral row of the absorbent body. In a disposable bowl having a pair of flaps and a waist flap, the left and right edges and/or the front and back edges of the absorbent body are divided into an upper layer portion and a lower layer portion, respectively.
The present invention also provides a disposable diaper characterized by a top in which a layer part extends from the first layer part and a guard flap is formed by the first layer part.

[Function] According to the disposable diaper of the present invention, the fit for the wearer is improved by the second flap that connects the absorbent body, and the crotch portion 5 (a leak-proof wall and pocket portion are formed in the crotch portion). The absorbent material and the absorbent material of the second flap (or guard flap) absorb absorbable waste such as urine. can prevent leakage.

[Example] The present invention will be described below based on the example shown in FIGS. 1 to 8. In addition, among the figures, FIG. 1 is a partially cutaway plan view of the surface of one embodiment of the disposable diaper of the present invention, and FIG.
The figure is a perspective view of the rear side of the disposable diaper shown in Fig. 1 in a state where it is curved toward the surface side, Fig. 3 is a sectional view taken along the line m-m of Fig. 1, and Fig. 4 is a perspective view of the disposable diaper shown in Fig. 1. 5th longitudinal sectional view showing the waist flap part in the embodiment
6, 7, and 8 are views corresponding to FIG. 3 showing still other embodiments of the present invention.

As shown in FIGS. 1 and 2, the disposable diaper 1 of the present invention includes a liquid-permeable top sheet 2 forming the side that contacts the wearer's skin, and a liquid-impermeable top sheet 2 corresponding to the top sheet 2. a back sheet 3, an absorbent body 4 located between the back sheet 3 and the top sheet 2 to absorb excrement such as urine, and a pair of sides extending outward from the periphery of the absorbent body 4. It is comprised of a flap 5.5 and a pair of waist flaps 15.15, and recessed portions 5A, 5A are formed on the outer edges of the side flaps 5.5.

In this disposable diaper l, as shown in FIGS. 2 and 3, a pair of second flaps 6.6 extend upward from the absorbent body 4 from the pair of side flaps 5.5. are respectively disposed along the pair of side flaps 5.5, and a second absorbent body 7 is disposed at least in the crotch region of the pair of second flaps 6.6. Since these second flaps 6.6 each have the same configuration, the one shown on the left side in FIGS. 1 and 2 will be described in detail as an example. The second flap 6 is made up of the second absorbent core 7, an elastic member to be described later, and a second topsheet 8 that wraps these, and extends to the outside of the topsheet 2 via one edge of the second topsheet 8. Bonded and fixed by adhesive, ultrasonic welding, thermal welding, etc. As shown in FIG. 3, on the outside of this bonded and fixed portion, a stretchable band-shaped elastic member 9 is fixedly bonded to both the back sheet 3 and the second top sheet 8 and stretched. 3. The side flap 5 is constituted by the second top sheet 8 and the elastic member 9. Further, as shown in the figure, the elastic member 9 is configured to be separated from the second absorbent body 7 and the absorbent body 4 so as to exhibit elasticity without mutually interfering with these absorbent bodies. Further, on the extending edge of the second flap 6, a second elastic member 10 in the form of a string that can be freely expanded and contracted is provided with a gap between the second absorbent body 7 and the second absorbent body 7.
The elastic member 10 is stretched along the absorbent body 7 and, like the elastic member 9 described above, is independent from the second absorbent body 7, so that the elastic member 10 is not constrained by the second absorbent body 7 and has sufficient elasticity. It is configured to perform. In this embodiment, even if the elastic member 10 is not provided, its function is complemented by the action of the elastic member 9.

Further, the second flap 6 has a surface area 5 to 60 of the absorber 4.
Preferably an protruding, more preferably 30
m+, and the width of the second absorbent body 7 is about 5 to
50+m++, more preferably 2
It is about 0 mm.

In addition, in FIGS. 1 and 2, reference numeral 12 indicates a fastening material such as a tape fastener.

Therefore, when the present disposable diaper 1 is brought into the free state from the unfolded state shown in FIG. At the edge, the second flap 6.6 is raised from above to form a leak-proof wall that is inclined inward of the absorbent body 4, and the leak-proof wall and the absorbent body 4 form a pocket portion 11.11. Side flaps 5.5 by part 9.9
Each outer edge is configured to contract to form gears (see FIGS. 2 and 3).

Each member constituting the present disposable diaper 1 is preferably made of the following materials, but is not limited by these materials.

That is, as the top sheet 2, a liquid-permeable sheet such as a fibrous nonwoven fabric or a porous plastic film is preferably used, and a hydrophilic sheet is more preferable, and only the surrounding area may be made water repellent. . In addition, as the back sheet 3, a moisture permeable film made by adding a filler to a thermoplastic resin such as polyolesoin and stretching it, or an elastic and water repellent fibrous nonwoven fabric is preferably used9. Basically, a high-molecular water-absorbing polymer whose main material is a defibrating valve is preferable, and a heat-treated thermoplastic resin, cellulose fiber, and high-molecular water-absorbing polymer are preferably used.

Further, as the second absorbent body 7 constituting the second flanpro, the same +4 material as in the absorber 4 described in -1- can be used, but in the case of the absorbent body 7, a high molecular weight water absorbing polymer is used. The effect can be achieved even if it is not used in combination with 5.

The elastic member 10 constituting the second Norasobu 6 may be a yarn elastic body made of polyurethane elastic fibers and natural rubber, a film-like elastic body mainly composed of polyurethane, a foamed elastic body such as polyurethane foam, or a vinylon elastic body. The water-absorbing shrinkable fibers are preferably water-absorbing shrinkable fibers, and the water-absorbing shrinkable fibers may have elasticity by absorbing moisture.

The elastic member 9 constituting the side flap 5 may be a thread-like elastic body made of polyurethane elastic fibers and natural rubber, a film-like elastic body mainly composed of polyurethane, or a foamed elastic body such as a polyurethane claw. In the case of thread-like elastic bodies, multiple pieces with a width of 5 to 35 m are arranged, and in the case of film-like elastic bodies or foamed elastic bodies, one with a width of 5 to 20 m is arranged. It is preferable to arrange a book or the first few books.

Since the disposable diaper 1 of this embodiment has the configuration shown in L, when the disposable diaper 1 is worn, the second flaps 52 are pulled toward the surface side by the respective elastic members 10 and stand up to form a leak-proof wall. A pocket 21 portion 11.11 is formed on the inside of the site flap 5.5, and the sight flap 5.5 is pulled toward the surface side by each elastic member 9.9 to curve and form a gear (Fig. 2, (See Figure 3)
. In this state, the tape fasteners 12 and 12 are unfolded and fixed to the attachment area of the front waist part to complete the present disposable diaper 1.
When worn, the recessed parts 5A, 5 of the sight flap 5.5
A surrounds the inseam area, and the second hula, Pro, 6 is K
A second flan protrusion that flexibly fits into the IXi section and accommodates poorly absorbable excreta such as feces in the boxed section 11. This can be absorbed by the second absorbent body 7 to reliably prevent leakage. Even when worn by a wearer such as an elderly child who is active, the side flaps 5.5 flexibly follow the movement and work together with the second flap 6.6 to prevent the absorbent body 4 from shifting. It is possible to prevent leakage without being affected by other factors. Furthermore, the second flap 61.6 is joined to the side flap 5.5, and the second flap 61.6 is joined to the side flap 5.5.
5 is formed with a liquid-impermeable seal between the back sheet 3 and the body, so that leakage can be reliably prevented.In addition, the side flap 5.5 is sealed with a moisture-permeable film J, This formation helps prevent stuffiness and rashes.

Although this embodiment shows a configuration in which the second knob 6.6 faces inward of the absorbent body 4, the present invention is not limited to this, and it may be configured to face outward in the absorbent body 4. Disposable diapers 1 made in this way can be made with 2nd flan pro, 6
The body structure is less likely to be destroyed by body pressure, activity, etc., making it suitable for older children who are highly active.

FIG. 4 is a diagram showing another embodiment of the disposable diaper of the present invention. As shown in the figure, the disposable diaper 1 of this embodiment has a pair of waist flaps 15.15 and a second flap 16.16. All the structures are the same as those of the above embodiment except that they are connected and fixed. A pair of waist flaps 1
5.15 have the same configuration, so to explain the front waist flap 15, the front waist flap 15 consists of the top sheet 2, the back sheet 3, and both sheets 2 extending from the front edge of the absorbent core 4. .3, and a second flap 16 is bonded and fixed at the extending portion of the surface seam 1-2. This second flap 16 is the second flap in the side flap 15.
Similar to the flap 6, the second absorbent core 17 and the elastic member 20 are separated and wrapped with the second top sheet 18, so that the extended end is configured as a free end. The second top sheet 1 in the second flap 16 has one edge fixedly bonded to the top sheet 2 and the second top sheet 18 at the front edge of the absorbent body 4, and the second top sheet 17 and the elastic member 20
, and the other edge is bonded and fixed to the extending portion of the top sheet 2. According to the disposable diaper 1 of this embodiment, it exhibits the effects of the above-mentioned embodiment, and also has excellent chick absorbency.
It is possible to reliably prevent easily absorbable excrement from leaking from the waist. Although it is preferable that the second flaps be disposed on both the front and rear sides, they may be disposed on either one of the waist flaps 16.

Further, FIG. 5 is a diagram showing another embodiment of the disposable diaper of the present invention, and the disposable diaper 1 of this embodiment has a liquid-impermeable sheet in the second flap 6, as shown in the figure. A leak-proof sheet 13 is disposed on the outer surface side of the second absorbent body 7. This leak-proof sheet 13 is made of the same material as the back sheet 3, and these two materials may be the same or different. Furthermore, the top sheet 2 covering the absorbent core 4 is formed to have a width between the back sheet 3 and the widthwise extending portion of the absorbent core 4 and the same extending portion of the back sheet 3 to form side flaps. 5.5 is formed.

Between the top sheet 2 and the back sheet 3 of the side flap 5.5, three stretchable thread-like elastic members 9' are stretched in parallel in parallel. The three elastic members 9゛ are
Preferably, between 5 and 35 cylinders are arranged in parallel. The present disposable diaper 1 is constructed in the same manner as the embodiment shown in FIGS. 1 to 3 or 4 except for these points. According to the disposable diaper 1 of this embodiment, the leak-proof sheet 1
3 makes it possible to further improve the leak-proofing properties of the second flap 6, which is particularly effective when the absorption amount of the second absorbent body 7 reaches a saturated state. Further, by disposing a leak-proof sheet on the second flap 16 shown in FIG. 4, leakage from the waist can be more reliably prevented.

FIG. 6 is a diagram showing another embodiment of the disposable diaper of the present invention. In the disposable diaper 1 of this embodiment, as shown in the figure, the top sheet 2 covering the absorbent body 4 is different from the back sheet 3.
The widthwise extending portion of the absorbent body 4 and the similar extending portion of the back sheet 3 form a side flap 5.
5, and second flaps 6.6 are bonded and fixed to slightly inner sides of both left and right edges of the absorbent body 4. Moreover, three stretchable string-like elastic members 9' are stretched in parallel horizontally between the top sheet 2 and the back sheet 3 in the side flaps 5.5. The three elastic members 9'' are 5~
Preferably, they are arranged in parallel between the 35 tumors. This disposable diaper is constructed in the same manner as the embodiment shown in FIGS. 1 to 3 except for these points. The disposable diaper 1 of this example can exhibit the same effects as those of the above example. Further, as shown in FIG. 4, a second flap 16 can be disposed on the waist flap 15.

Further, FIG. 7 is a diagram showing still another embodiment of the disposable diaper of the present invention. Upper layer portions 4A, 4A and lower layer portions 4B, 4B are formed, and the upper layer portion 4A is formed as a guard flap that protrudes upward from the absorber 4 from the starting point of branching with the lower layer portion 4B and maintains this state. On the other hand, the lower layer portion 4B is maintained horizontally and is formed as the base of the side flap 5.5. In addition, the top sheet 2 covers the surface of the absorbent body 4,
It covers the entire surface of the upper layer part 4A and the front side of the lower layer part 4B thereof, and also covers the rear sort 3 forming the side flaps 5.5.

And, between the top sheet 2 and the back sheet 3 in the side flap 5.5, a stretchable band-shaped elastic member 9.9 forming gears is stretched between each side flap 5.5.

Further, a thread-like elastic member 10 is disposed along the tip edge of the upper layer portion 4A, and the elastic member 10 and the upper layer portion 4A are joined at the overlapping portion of the topsheets 2 that wrap them, and are partitioned. has been done. Although the widths of the upper layer part 4A and the lower layer part 4B may be different, they are preferably formed to have the same width, and the width is preferably 3 to 50 mm, more preferably about 20 mm. -1- The opening portion 4A and the upper layer portion 4BB may be formed by separating the left and right edges of the absorbent body 4, or may be formed by polymerizing two absorbent bodies.
．． In addition, FIG. 8 shows another embodiment of the disposable diaper of the present invention. As shown in the same figure, the rise of the -t and N parts 4A is gentle, and the surface sheet 1-2 covers the respective opposing surfaces (as in the above embodiment). - In the opening 4A,
A string-like elastic member 10 is disposed along the surface thereof. The present disposable diaper 1 has the same structure as the embodiment 1-1 except for these points.

As shown in FIGS. 7 and 8, in order to raise the upper layer 4A by 1.1 cm from the opening 4B, it is largely due to the contraction force of the elastic member 10, but between these two 4A and 4B, By arranging the band-like or thread-like support members (TA not shown) in between, the position of the upper layer 4A can be maintained without being affected by the wearer's body pressure or sagging after absorbing excrement. This is more preferable in this respect.

The disposable diaper 1 according to the present embodiment shown in FIGS. The same effects can be achieved. Also, Figure 7,
In the disposable diaper 1 shown in FIG. 8, the front and rear edges are similarly divided into two parts and card flaps are provided on the waste flaps 15 and 15, thereby making it possible to further increase the leak-proof property λ5.

In the present invention, the pair of second flaps may be disposed between the left and right side edges of the disposable diaper and the center of these both side edges, and preferably, the elasticity of each side flap that constitutes the pair of side flaps is It is preferable to arrange it inside the inner edge of the member.

Further, the disposable diaper of the present invention is not limited to the embodiments with names in the digits, but is encompassed by the present invention as long as they do not go against the gist of the present invention.

(Effects of the Invention) The disposable diaper of the present invention has excellent wearability and fit even during activities, and provides a secure fit in the crotch F region without leaking difficult-to-absorbable excrement such as monthly stool. In addition, absorbable excrement such as urine can be reliably absorbed in the crotch F portion.

[Brief explanation of drawings]

FIG. 1 shows the surface of an embodiment of the disposable diaper of the present invention.
- Figure 2A is a perspective view of the rear side showing a state in which the one-piece disposable diaper is curved toward the surface side in Figure 1, and Figure 3 is a cross section taken along the line m-m in Figure 1. ], FIG. 4 shows the cloth I/W in still another embodiment of the present disposable diaper.
Longitudinal cross-sectional views showing the flange portion, FIGS. 5 and 6,
7 and 8V are views corresponding to FIG. 3 showing still other embodiments of the present invention. 1; Disposable diaper 2; Top saw 13; Back sheet 4; Absorbent body 48; Upper part (guard flap) 4B; Lower part 5; Side flaps 6.16;
Second flange 9, lO; elastic member 15; waist flap

Claims (3)

[Claims] (1) A liquid-permeable top sheet, a liquid-impermeable back sheet, an absorbent body disposed between these two sheets, and side flaps and waist flaps extending outward from the periphery of the absorbent body. In each of the disposable diapers, at least one pair of second flaps extending upwardly from the absorbent body are arranged along the pair of side flaps and/or the pair of waist flaps, and at least one of the second flaps is disposed along the pair of side flaps and/or the pair of waist flaps. A disposable diaper characterized in that a second absorbent body is disposed in each central region in the longitudinal direction. (2) A liquid-permeable top sheet, a liquid-impermeable back sheet, an absorbent body placed between these two sheets, and a pair of side flaps and waist flaps that extend outward from the periphery of the absorbent body. In the disposable diaper, the left and right edges and/or the front and back edges of the absorbent body are divided into an upper layer portion and a lower layer portion, and the upper layer portion extends upward from the lower layer portion, and the upper layer portion provides a guard. A disposable diaper characterized by forming a flap. (3) The disposable diaper according to claim (2), characterized in that an elastic member is disposed in the upper layer portion along the edge direction thereof, and the upper layer portion and the elastic member are covered with the top sheet. .