JP3418279B2 - Disposable diapers - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disposable diaper, and more particularly to a diaper suitable for use together with an auxiliary pad for absorbing urine.

[0002]

2. Description of the Related Art Conventionally, disposable absorbent pads for absorbing urine excreted by bedridden elderly people, sick people, incontinence patients and the like have been publicly known or well known. As an example, the actual Kaihei 2-6
No. 024, the liquid permeable top sheet 102 as shown in FIG. 8, a back sheet 103, and an absorbent core 104 interposed between the two sheets are used.
Of rectangular pads 100 are disclosed. This kind of pad may be set on the inner surface of a disposable diaper and used with the diaper. By doing so when urination is large, urine can be treated with a relatively inexpensive absorbent pad, and the frequency of exchanging expensive diapers can be reduced. The diaper disclosed in US Pat. No. 4,704,116 is suitable for such an application. This diaper has a pair of elastic flaps made of a liquid permeable sheet on the inner surface on both the left and right sides,
This flap forms a pocket opening toward the inside of the diaper. The liquid-absorbent pad can be set on the inner surface of the diaper by inserting the right and left sides into pockets so as not to be laterally displaced.

[0003]

The known combination of the pad and the diaper cannot prevent the pad from shifting from the front side region toward the rear side region. Especially for men,
Since urination tends to be concentrated in the anterior region, the movement of the pad makes it difficult to reliably capture urine, and the diaper is soiled even when the pad is used.

An object of the present invention is to prevent the liquid-absorbent pad used together with the disposable diaper from shifting vertically and horizontally.

[0005]

Means of the present invention for solving the above-mentioned problems are as follows.

According to the present invention, an absorbent core is interposed between a liquid-permeable top sheet and a liquid-impermeable back sheet, and the diaper is composed of a front side region, a rear side region, and a crotch region located between the both side regions. In the inner surface of the left and right sides of the main body, extending in the longitudinal direction of the diaper body, and having a pair of leakproof flaps having pockets opening inwardly, on the surface sheet, in combination with the diaper body The present invention relates to an improvement of a disposable diaper in which a liquid absorbing auxiliary pad for increasing the amount of urine absorption can be inserted and held in the pocket.

[0007] The present invention, the distance between the bottom of the pair of pockets in the front region is much larger than the distance between the bottom of the pair of pockets at a required site of the crotch region
And the liquid-absorbent auxiliary pad is located in the crotch region.
The bottom of the pair of pockets extending from the main part to the front side area
Between the left and right side edges and the front and rear edges of the pad,
It is characterized in that it can be inserted into contact with the joint portion of the cup .

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the present invention will be described below with reference to the accompanying drawings.

In FIG. 1, a diaper 1 comprises a liquid-permeable top sheet 2, a liquid-impermeable back sheet 3, and an absorbent core 4 interposed between the two sheets 2 and 3, and a front region 6; The front and back sheets 2 and 3 have a rear region 7 and a crotch region 8 located between the regions 6 and 7, and the inner surfaces of the portions extending from the peripheral edge of the core 4 are watertightly joined to each other to form front and rear ends. The edge portions 6A and 7A and the left and right leg peripheral side edge portions 8A are formed. A pair of leakproof flaps 9 extending in the front-rear direction are located on the left and right sides of the inner surface of the diaper 1, and tape fasteners 11 are attached to the left and right side edges of the rear area 7. The diaper 1 has a rear edge 7
A waist elastic member 15 along the edge of A and a leg elastic member 16 along the left and right side edges of the crotch region 8 that bend inward are provided. The elastic members 15 and 16 are the front and back sheets 2, 3 In between, it is joined to the inner surface of at least one of the sheets in the stretched state. The leak-proof flap 9 is formed by joining the front and rear end portions of the liquid-permeable sheet piece and the outer edge portion to the upper surface of the topsheet 2 in the joining areas 20A to 20D, and the inner edge portion of the stretchable elastic member. 22. What is partially shown by an imaginary line from the front side region 6 to the crotch region 8 is the liquid absorbent pad 100 of FIG.

In FIG. 2, the leak-proof flap 9 has an outer edge at a distance L ₀ from a center line CC that divides the diaper 1 into left and right parts, and a portion having a width 20 C between the distance L ₂ and the center line CC is hot melt. It is bonded to the topsheet 2 with an adhesive H. The inner side of the L ₂ of the leak-barrier flaps 9 a free end F _2, to form a pocket P ₂ which opens toward the center line CC of the diaper 1. The free end F ₂ has an elastic member 22 inside a sleeve 25 formed by folding back the side edge thereof.
When the front and rear of the diaper 1 is curved inward, the elastic member 2
2 contracts, and the pocket P ₂ opens greatly. At least the front and rear ends of the elastic member 22 are joined to the leakproof flap 9.

In FIG. 3, the leakproof flap 9 has a width 20B portion between the distance L ₀ and L ₃ from the center line CC joined to the topsheet 2 and a free end F ₃ having a pocket portion P _3. Is formed. The pocket portion _{P 3, L 3> L 2} , i.e. a 20B <20C, the depth of the pocket is deeper than the pocket portion _{P 2,} here, the side of the absorbent pad 100 as shown in phantom The edge 108A can be inserted.
As a result, the liquid-absorbent pad 100 is shown in FIGS.
As shown in FIG.
_The pocket portion P is brought into contact with the inner surface of the leak-proof flap 9 in ₃
It is inserted in ₃ .

In FIG. 4, the leakproof flap 9 is joined to the topsheet 2 at the width 20A between the distances L ₀ and L ₁ at the front edge portion 6A of the diaper. The width 20A corresponds to the entire width of the leak-proof flap 9, and here the pocket is in a closed state. The form of the leak-proof flap 9 at the rear edge portion 7A of the diaper is the same as that of the front edge portion 6A.

Referring again to FIG. 1, at the portion indicated by the index R with respect to the leakproof flap 9, the joint width of the leakproof flap 9 changes from 20C to 20B which is narrow. As described above, since the pocket portion P ₃ is a deep bottom pocket portion between the index R and the front end edge portion 6A, the liquid absorbent pad 1 is provided there.
00 side edge 108A is inserted, side edge 108A
The front and rear end edges of the contact the wide joints 20A and 20C,
The pad 100 is in the front-back direction (up-down direction of the worn diaper)
There is no slipping. In the leak-proof flap 9 that acts in this way, the portion indicated by the index R may be set in the crotch region 8 according to the length X of the pad 100 to be attached. In the leak-proof flap 9 of the illustrated example, the joint area behind the index R is formed wide as a whole, but only the joint area near the index R is wide, and the remaining portion is formed as narrow as the front area 6. It may have been done.

The leak-proof flap 9 covers the surface sheet 102 of the pad 100, and is therefore preferably liquid-permeable. Thereby, the decrease in the transfer speed of body fluid to the pad 100 can be minimized.

5, 6 and 7, the inner surface of the diaper 1 is composed of a liquid permeable top sheet 2 and a liquid impermeable side edge sheet 30. The left and right side edge portions of the topsheet 2 are folded back inward along the folding curve 32 near the side edge portion of the core 4 to form the leakproof flap 9. In FIG. 5, the free end portion F ₂ and in FIG. A free end F ₃ is formed and in FIG. 7 the entire inner surface of the leakproof flap 9 is joined to the topsheet 2.
In the leak-proof flap 9 of FIG. 5, a portion having a width 20C extending inward from the folding curve 32 is joined to the upper surface of the topsheet 2 via the hot-melt adhesive H, and the width of the free edge portion F ₂ is the folding curve. It is narrower than the width of the free edge portion F ₃ of FIG. The side edge sheet 30 is joined to the top sheet 2 near the folding curve 32 via a hot melt adhesive H, and one side edge portion 35 extends from the side edge portion 35 to the outside of the side edge of the core 4. And the other side edge portion 36 is bent outward to form a free edge portion in FIGS. 5 and 6, and in FIG. 7, the side edge sheets 30 are joined together.
Since the elastic member 37 is joined to the free edge of the side edge portion 36 in a stretched state, when the front and rear of the diaper 1 bends inward, the side edge portion 36 contracts and stands up from the inner surface of the diaper, and closely contacts the wearer's legs. To do. In this diaper 1, it is preferable that the leak-proof flap 9 is liquid-permeable and the side edge sheet 30 is liquid-impermeable.

In the present invention, the front and back sheets 2, 3 and the side edge sheet 30 may be made of non-woven fabric or a plastic film. These sheets 2, 3, 30
Can be bonded to the core 4 as required. In addition to using a hot melt type adhesive, a technique of heat welding to a heat fusible material can be used for this joining and joining of sheets.

[0017]

According to the diaper constructed as described above, the pockets on the inner surfaces of the left and right sides are deep in the front region,
Therefore, the distance between the bottoms of the pair of pockets is large, while the bottom is shallow at the required region of the crotch region, so if you insert the left and right side edges of the absorbent pad used with this diaper into the deep part of the bottom of the pocket. The pad can be prevented from sliding down toward the crotch region by supporting the pad at a shallow portion of the bottom of the crotch region.

[Brief description of drawings]

FIG. 1 is a partially cutaway plan view of a diaper.

FIG. 2 is an end view taken along line II-II of FIG.

FIG. 3 is an end view taken along the line III-III in FIG.

FIG. 4 is an end view taken along line IV-IV of FIG. 1.

5 is an end view similar to FIG. 2 of a diaper having a different mode from FIG. 1.

6 is an end view similar to FIG.

7 is an end view similar to FIG.

FIG. 8 is a perspective view of a liquid absorbent pad.

[Explanation of symbols]

1 disposable diaper 2 topsheet 3 backsheet 4 core 6 front region 7 rear region 8 crotch region 9 leak-barrier flaps 100 absorbent pad (absorbent auxiliary pad) _P 2, _{P 3} pockets

─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-6-178795 (JP, A) JP-A-3-198851 (JP, A) JP-A-7-184954 (JP, A) JP-A-4- 51952 (JP, A) JP 6-30963 (JP, A) JP 64-33202 (JP, A) Actual flat 7-329 (JP, U) Actual flat 5-37219 (JP, U) Actual Kaihei 2-6024 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) A61F 5/44 A61F 13/15

Claims (5)

(57) [Claims] 1. A diaper body having an absorbent core interposed between a liquid-permeable top sheet and a liquid-impermeable back sheet, and comprising a front side region, a rear side region, and a crotch region located between the both side regions. It has a pair of leak-proof flaps that extend in the longitudinal direction of the diaper body on the inner surfaces of the left and right sides, and that has a pocket that opens inwardly, and that is attached to the surface sheet in combination with the diaper body. In a disposable diaper capable of inserting and holding a liquid-absorbing auxiliary pad for increasing the amount of urine in the pocket, the distance between the bottoms of the pair of pockets in the front side region is the required position in the crotch region. and size Kuna' than the distance between the bottom portions of the pair of pockets, said liquid-absorbent auxiliary
An auxiliary pad extends from the required region of the crotch region to the front region.
The left and right side edges of the pad between the bottoms of the pair of pockets
Abutting the front and rear edges to the joint of the leakproof flap.
The diaper described above, which is insertable. 2. The diaper according to claim 1, wherein the auxiliary pad is inserted and held between bottom portions of the pair of pockets in the front region. 3. The diaper according to claim 1 or 2, wherein the pair of leakproof flaps having the pockets are made of a liquid permeable sheet. 4. The leakage prevention flap formed by folding back the right and left side edges of the surface sheet inwardly of the diaper along the longitudinal direction of the pocket. Diaper described in either. 5. The elastic member extending in the longitudinal direction of the diaper is attached to a side edge portion of a free end portion of the leakproof flap forming the pocket. Diapers.