JP3271891B2 - 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 provided with an adhesive tape for rolling and discarding after use.

[0002]

2. Description of the Related Art In a pants-type disposable diaper disclosed in Japanese Utility Model Laid-Open No. 5-39531, a single piece of adhesive tape is provided on each of the left and right sides to extend in a waist direction. It can be rolled up using tape. In this way, even if dirt is attached to the diaper, it can be disposed of in a sanitary condition.

In the disposable diaper disclosed in Japanese Utility Model Laid-Open Publication No. Hei 6-77722, a single piece of adhesive tape that can be extended vertically is provided at the center of the rear body, and the diaper can be rolled up with this tape. .

[0004]

SUMMARY OF THE INVENTION
In order to manufacture the diaper of JP-A-31, two tapes corresponding to the adhesive tapes on the left and right sides must be prepared, and these tapes must be attached to the left and right sides using two systems of tape supply equipment. However, as in the case of Japanese Utility Model Laid-Open No. 6-77722, the cost tends to be higher in terms of tape procurement and diaper manufacturing equipment than in the case where the adhesive tape is a single piece.

In the diaper disclosed in Japanese Utility Model Application Laid-Open No. 5-39531, two adhesive tapes are provided on each of the right and left waist circumference side parts. Tapes may not be available. If there is bowel movement while wearing a pants-type diaper, the left and right sides of the diaper may be cut open to remove the diaper. The cut-out diaper is preferably rolled so that each side is on the inside so as not to pry out the soiled portion with stool. At that time, the situation in which an adhesive tape cannot be used must be avoided.

Further, in the case of the diaper disclosed in Japanese Utility Model Laid-Open Publication No. Hei 6-77722, since the adhesive tape extends in the vertical direction, it is difficult to use the tape when the diaper is rolled in the width direction.

Therefore, an object of the present invention is to make it easy to use a pressure-sensitive adhesive tape for rolling a disposable diaper, particularly when the diaper is rolled in the width direction.

[0008]

In order to solve the above-mentioned problems, according to the present invention, a liquid-absorbent core is interposed between a liquid-permeable top sheet and a liquid-impermeable back sheet, and a front waist region is provided. And a back waist region and a crotch region located between these two regions. The disposable diaper has an adhesive tape that can be used to roll the diaper on the back sheet outer surface of any of the front and rear waist regions. Assumes disposable diapers.

On this premise, the present invention is characterized in that the adhesive tape is constituted by a single tape piece extending in the diaper waist direction, and the central portion in the longitudinal direction is any one of the front and rear waist regions. The tape is fixed to the center in the width direction of the tape, and the remaining left and right side edges are formed in freely deformable portions, and each of the free deformable portions is formed with an adhesive area in a required portion on both surfaces thereof, and the tape is formed. The piece is folded several times in the longitudinal direction, and the overlapped state is held by the adhesive area so as to be extensible ,
A perforation extending in the longitudinal direction of the tape piece
Is given .

[0010]

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

A pants-type disposable diaper 1 shown in a partially broken perspective view in FIG. 1 is viewed from the back side, and includes a liquid-permeable top sheet 2, a liquid-impermeable back sheet 3,
It is constituted by a liquid-absorbent core 4 interposed between these two sheets 2 and 3, and has a front waistline area 6, a rear waistline area 7 and a crotch area 8 located between these two areas 6 and 7. . The front and rear waist regions 6 and 7 are overlapped and joined to each other at left and right side edges to form left and right waist side portions 11 and 12, and a waist opening 13 and a pair of left and right leg openings 14.
And is defined. A plurality of elastic members 16 and 17 are joined to the inner surface of one of the front and back sheets 2 and 3 in a stretched state at the periphery of the waist opening 13 and the periphery of the leg opening 14, respectively. On the outer surface of the back sheet 3 at the center in the width direction of the rear waist region 7, there is an adhesive tape 19 to be used when the dirty diaper 1 is rolled. Tape 19
The left and right side end portions 19A and 19B are folded over, and each can be extended in the right and left waist circumference directions as shown by imaginary lines.

FIG. 2 is a sectional view of the adhesive tape 19 shown in FIG.
FIG. 2 is a view taken along line I-II, in which the folded state is indicated by a solid line, and the extended state is indicated by a virtual line. The center portion 23 of the tape 19 in the left-right direction is fixed to the outer surface of the back sheet 3 via a hot-melt adhesive 24, and the remaining left and right side ends 19A, 19B are freely deformable.
It can extend in the waist direction. Left and right end portions 19A, 1
9B has an adhesive area 27 in which an adhesive 26 is applied to required portions on both sides thereof, and the left and right side end portions 19A and 19B are kept folded by the action of the adhesive 26. The tape 19 holds the adhesive 2 when folded.
The surface opposite to 6 is surface-treated so that it can be easily peeled off, and easily extends when the left and right ends 29A and 29B are pinched and pulled.

FIG. 3 is a perspective view of the diaper 1 which has been rolled up for disposal. FIG. 3 (A) shows the state of the rear waist region 7 and FIG. 3 (B) shows the state of the front waist region 6. . Diaper 1
After the crotch region 8 is folded on the front waist region 6, the left and right waist regions 11 and 12 are rounded with the front waist region 6 inside. As is clear from FIG. 7B, the right and left side edges 12A and 19B of the adhesive tape are wrapped around the waist and the adhesive area 27 of the left end 19A is rounded. Of the right end portion 19B.
7 is fixed to the outer surface of the rounded left torso side portion 11. When these side ends 19A, 19B are vertically separated from each other as shown in the figure when fastening, the rolled diaper 1 is in a state of being closed over a wide range in the vertical direction, and the diaper becomes dirty accordingly. The site is less likely to be exposed. By the way, when the diaper 1 is to be widely closed in this way, if the adhesive tape extends only in one direction around the waist, the free deformation portion of the tape becomes much longer than that in the illustrated example. And its handling becomes complicated.

The necessity of rolling the soiled diaper 1 as shown in FIG. 3 is as follows. When the baby wears the pants-type diaper 1, the stool is excreted, and if the diaper 1 is removed by pulling it down, the stool may adhere to various parts of the body. In order to avoid this, the worn diaper 1 may be cut open at the right and left waist sides 11, 12 to separate the front and rear waist regions 6, 7, and the diaper 1 may be detached from the body. This reduces the need to rub the body with a dirty diaper. However, in the diaper 1 cut in this way, since the dirty portion may be seen from the cut side and the dirt may leak out, each of the opened side portions 11 and 12 as shown in FIG. Diaper 1 so that it is inside
Is preferably discarded. This is the need.

[0015] In addition, the diaper 1 is not a pant-type, when Ru der those of open-type as well, can be rounded as shown in FIG. 3. If there is an adhesive tape fastener on the left and right side edges of the diaper, it is possible to roll the diaper with it. However, such a fastener is similar to the diaper disclosed in Japanese Utility Model Application Laid-Open No. 5-39531.
Besides being able to hide when the diaper is rolled,
Since the length may not always be sufficient, even if the diaper is an open type, the adhesive tape 19 shown in FIG.
It is preferable to have.

FIG. 4 shows an example of an embodiment of the diaper 1.
The same drawings as FIG. Adhesive tape 1 for this diaper 1
9 is provided with a perforation 30 extending in the longitudinal direction at the center in the width direction of the left and right side end portions 19A, 19B. The side end portions 19A and 19B are used to secure the perforations 3 when fastening them.
If the diaper is used after being torn at 0, it is easy to further widen the fastening area in the vertical direction of the diaper when fastening as shown in FIG. This embodiment may be applied to large diapers such as adult diapers.

In the present invention, a plastic film or a nonwoven fabric can be used for the tape base of the adhesive tape 19. The tape 19 forms an adhesive area 27 at a required portion on both sides thereof, and is used for folding the tape 19 and for rolling the diaper 1. However,
The pinching free end 29 is preferably non-tacky on both sides. The tape 19 may be located in any of the front and rear waist regions 6 and 7. The diaper 1 is rolled from both sides as shown in the example shown in FIG.
It is also possible to use only one of 9A and 19B.

[0018]

In the disposable diaper according to the present invention,
A single piece of adhesive tape extending in the waist direction is attached to the diaper at the center in the longitudinal direction, and the left and right side ends are extended in the waist direction, so compared to the conventional technique of attaching two separate adhesive tapes And easy to install, no cost. The left and right side edges of the adhesive tape do not hide when the diaper is rolled in the width direction,
It is easy to fasten to a diaper. In addition, these left and right end portions can be shifted from each other in the up-down direction of the diaper when fastening the diaper, so that the rolled diaper can be closed widely.

[Brief description of the drawings]

FIG. 1 is a partially broken perspective view of a diaper.

FIG. 2 is a side view of the fastening tape.

FIG. 3A is a perspective view of the rear waist region of the rounded diaper, and FIG. 3B is a perspective view of the front waist region of the round diaper.

FIG. 4 is a view similar to FIG. 1 showing one embodiment of a diaper.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Diaper 2 Top sheet 3 Back sheet 4 Core 6 Front waist area 7 Rear waist area 8 Inseam area 19 Adhesive tape 19A, 19B Free deformation part (side end) 23 Central part 27 Adhesive area 30 Perforation

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) A61F 13/15-13/84

Claims (2)

(57) [Claims] 1. A liquid-permeable top sheet and a liquid-impermeable back sheet.
Liquid absorbent core is interposed between the front waist area and the back waist area
And a crotch region located between the two waist regions.
Back sheet of any of the front and rear waist areas of the disposable diaper
An adhesive tape that can be used to roll the diaper on its outer surface
A disposable diaper having a loop, wherein the adhesive tape extends in a circumferential direction of the diaper.
And a longitudinal center portion of the tape piece.
It is fixed to the widthwise center of any of the rear waist areas and the remaining
Left and right side end portions are formed in a freely deformable portion, and each of the free deformable portions is required for both surfaces thereof.
An adhesive area is formed at the site, and the
It is folded heavily, and the overlapping state is the adhesive area
Extendable byAre held in their width direction
The center portion is provided with a perforation extending in the longitudinal direction of the tape piece.
Have been  The disposable diaper as described above. 2. The free deformable portion is formed so that any one of the adhesive areas can be fixed to a required portion of a rounded diaper when the state changes from a folded state to an extended state. Item 1. The disposable diaper according to item 1.