JP3616771B2 - Disposable diapers - Google Patents

Description

[0001]
[Technical field to which the invention belongs]
The present invention relates to a disposable diaper provided with an adhesive tape that is rolled up and discarded after use.
[0002]
[Prior art]
In the pants-type disposable diaper disclosed in Japanese Utility Model Publication No. 5-39531, a single strip of adhesive tape is provided on each of the left and right sides, and the dirty diaper uses a total of two strips of tape. Can be rounded. If it does in this way, even if filth is adhering to a diaper, it can be discarded in a hygienic favorable state.
[0003]
[Problems to be solved by the invention]
In the diaper of Japanese Utility Model Laid-Open No. 5-39531, when the left and right sides are rolled inward, the adhesive tape is hidden and may not be used. If feces are excreted while wearing a pants-type diaper, the left and right sides of the diaper may be cut open to remove the diaper. The cut diaper is preferably rounded so that each side is on the inside so that a site soiled by stool is not peeked out, and the situation where the adhesive tape cannot be used at that time must be avoided.
[0004]
Also, since this diaper does not have a means for widely closing the diaper rolled in the width direction in the vertical direction, in a large adult diaper or the like, a dirty part tends to be peeped outside.
[0005]
Then, this invention makes it a subject etc. so that when a disposable diaper is rolled up in the width direction, it can be closed widely.
[0006]
[Means for Solving the Problems]
The premise of the present invention to solve the above problems is that a liquid-absorbent core is interposed between the liquid-permeable surface sheet and the liquid-impermeable back sheet, and the front waist area, the back waist area, and these Ru disposable diaper der having a pressure-sensitive adhesive tape that can be used to keep rounding the diaper said the outer surface of one of the backsheet front and rear waist regions of the diaper having a crotch region extending between the band.
[0007]
Features of our Keru present invention to such a premise, the adhesive tape is formed from the first adhesive tape and the second adhesive tape Nijo extending parallel to one another in the waist-circumferential direction of said diaper, said first and second adhesive One end portion of the tape positioned at the center portion in the width direction of any one of the front and rear waist regions and fixed to the outer surface of the back sheet in the vertical direction; and a freely deformable free portion excluding the one end portion One end portion of the first adhesive tape is located on the left side in the waist direction in the center portion in the width direction, and one end portion of the second adhesive tape is located on the right side in the waist direction in the center portion in the width direction. The free portions of the first and second adhesive tapes are folded so as to be stretchable in the longitudinal direction of the tape with adhesive zones at required portions on both sides thereof, The tip part is 2 extending from the one end of the pressure-sensitive adhesive tape to the left in the waist direction, and the tip of the free portion of the second pressure-sensitive adhesive tape extends from the one end of the first pressure-sensitive adhesive tape to the right in the direction of the waist, In the diaper, the folded state of the free parts of the first and second adhesive tapes is held by the adhesive region, and the free part of the first adhesive tape is expanded when the free part is extended in the circumference direction. Extends to the left in the waist direction, and the free portion of the second adhesive tape extends to the right in the waist direction .
[0008]
[0009]
【Example】
The details of the disposable diaper according to the present invention will be described with reference to the accompanying drawings.
[0010]
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-impervious back sheet 3, and both the sheets. It is comprised by the liquid-absorbing core 4 interposed between 2 and 3, and has the front waist area 6, the back waist area 7, and the crotch area 8 located between these areas 6 and 7. The front and rear waist regions 6 and 7 are overlapped and joined to each other at the left and right side edges to form left and right waist portions 11 and 12, and a waist opening 13 and a pair of left and right leg openings 14. Is defined. A plurality of elastic members 16 and 17 are joined to the inner surface of either the front or back sheet 2 or 3 in a stretched state at the peripheral edge of the waist opening 13 or the peripheral edge of the leg opening 14. The outer surface of the backsheet 3 in the rear waist region 7, that have Nijo adhesive tape is attached for use when previously rounding the diaper 1 soiled. The adhesive tape is formed of two first adhesive tapes 19 and second adhesive tapes 20 extending in parallel to each other in the diaper torso direction. The first and second adhesive tapes 19 and 20 are positioned at the central portion 23 in the width direction of the rear waistline region 7 and are fixed to the outer surface of the back sheet 3 while being spaced apart from each other in the vertical direction. It is formed from freely deformable free portions 19B and 20B excluding the portions 19A and 20A. In these tapes 19 and 20, one end 19 </ b> A of the first adhesive tape 19 is positioned on the left side in the waist direction in the width direction center portion 23, and one end 20 </ b> A of the second pressure-sensitive adhesive tape 20 is in the waist direction in the width direction center portion 23. Located on the right side. The free portions 19B and 20B of the tapes 19 and 20 are folded so as to be extended. A distal end portion 19C of the free portion 19B of the first adhesive tape 19 extends from the one end portion 20A of the second adhesive tape 20 to the left in the trunk direction. A distal end portion 20C of the free portion 20B of the second adhesive tape 20 extends from the one end portion 19A of the first adhesive tape 19 to the right in the trunk direction. In the diaper 1, when the first and second adhesive tapes 19, 20 free parts 19 </ b> B, 20 </ b> B are extended in the waist direction as indicated by phantom lines in FIG. 1, the free part 10 </ b> B of the first adhesive tape 19 is The free portion 20B of the second adhesive tape 20 extends to the right in the waist direction.
[0011]
2 and 3 are views taken along the lines II-II and III-III of the adhesive tapes 19 and 20 in FIG. One end portions 19 </ b> A and 20 </ b> A of the tapes 19 and 20 are fixed by a hot melt adhesive 24 . The remaining free deformable free portions 19B and 20B have an adhesive area 27 formed by applying the adhesive 26 to the required portions on both sides, and the folded state is maintained by the action of the adhesive 26. I'm leaning. Tape 19 and 20, the surface facing the adhesive 26 when folded are surface treated to facilitate peeling respective tip portion 19C, it is extended and pulled by gripper to 20C.
[0012]
FIGS. 4A and 4B are perspective views of the diaper 1 rolled for disposal, in which FIG. 4A shows the state of the rear waist region 7 and FIG. 4B shows the state of the front waist region 6. In the diaper 1, after the crotch region 8 is folded over the front waistline region 6, the left and right waistline side portions 11, 12 are rounded with the front waistline region 6 inside. As in apparent in FIG. 4 (B), the respective adhesive tapes 19 and 20 wound around the waist direction, is fixed to the outer surface of the right waist side 12 on which the adhesive zone 27 is rounded tape 19, The adhesive area 27 of the tape 20 is fixed to the outer surface of the rounded left waist portion 11. These tapes 19 and 20, because spaced vertically from each other as shown in FIG When fastened, a state in which the diaper 1 which is rounded is widely closed in the vertical direction, that much sites soiled diapers exposed It becomes difficult to do. Incidentally, when the diaper 1 is to be closed in such a wide range, if the adhesive tape is a single one, the tape becomes much longer than that of the illustrated example, and the handling becomes complicated.
[0013]
The necessity of rounding the dirty diaper 1 as shown in FIG. 4 is as follows. When an infant wears a pants-type diaper 1, stool is excreted, and if the diaper 1 is pulled down and taken off, the stool may stick around the body. In order to avoid this, the worn diaper 1 may be cut open at the left and right waistline side portions 11 and 12, the front and back waistline regions 6 and 7 may be separated, and the diaper 1 may be detached from the body. This reduces the chance of rubbing your body with dirty diapers. However, in the diaper 1 that is cut and opened in this way, a dirty part may be seen from the cut and opened side, or dirt may leak out. Therefore, each of the opened side parts 11 and 12 as shown in FIG. It is preferable that the diaper 1 is rolled and discarded so as to be inside. This is the necessity.
[0014]
Moreover, when the diaper 1 is not an underpants type but an open type, it can be rounded as shown in FIG. And if there are adhesive tape fasteners on the left and right side edges of the diaper, it is possible to roll the diaper with it. However, such fasteners may be hidden when the diaper is rolled, as well as the diaper of the Japanese Utility Model Laid-Open No. 5-39531, and the length thereof is not necessarily sufficient. Therefore, it is preferable to provide the illustrated adhesive tapes 19 and 20 even in an open diaper.
[0015]
In the diaper 1 of the embodiment shown in FIG. 1 described above, the first and second adhesive tapes 19 and 20 are attached so as to extend in the left-right direction around the trunk, but the present invention is not limited to this. Alternatively, the two strips of adhesive tapes 19 and 20 may be attached so as to extend around the trunk in the same direction.
[0016]
FIG. 5 is a drawing similar to FIG. 1 showing another example of the embodiment. The adhesive tape 19, 20 of the diaper 1 is provided with a perforation 30 extending in the longitudinal direction at the center in the width direction of the freely deformable free portions 19B, 20B. When the free portions 19B and 20B are used by being cut at the perforation 30 when fastening them, it is easy to further widen the fastening area in the vertical direction of the diaper when fastening as shown in FIG. Become. This embodiment may be applied to a large size diaper for adults.
[0017]
In this invention, a plastic film or a nonwoven fabric can be used for the tape base material of the adhesive tapes 19 and 20. The tapes 19 and 20 are used for forming an adhesive region 27 at required portions on both sides of the tape 19 and 20 for folding the tapes 19 and 20 and for rolling the diaper 1. However, it is preferable that the front end portions 19C and 20C for gripping are both non-adhesive. The tapes 19 and 20 may be in any of the front and rear waist regions 6 and 7.
[0018]
【The invention's effect】
In the disposable diaper according to the present invention, since one end of the two first and second adhesive tapes extending in the circumferential direction is fixed to the central part in the width direction of the diaper, the adhesive tape is used when the diaper is rolled in the width direction. In addition, since one end of these adhesive tapes is separated in the vertical direction in the center of the diaper in the width direction, the vertical fastening area of the rolled diaper can be widened, even for large diapers It is possible to prevent dirty parts from being looked out.
[Brief description of the drawings]
FIG. 1 is a partially broken perspective view of a diaper.
FIG. 2 is a view taken along the line II-II in FIG.
3 is a view taken along the line III-III in FIG.
FIG. 4A is a perspective view when a rear waist area of a rolled diaper is viewed, and FIG. 4B is a perspective view when a front waist area of the rolled diaper is viewed.
FIG. 5 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 Crotch area 19 1st adhesive tape 19A one end part 19B free part
19C tip portion 20 second adhesive tape 20A one end portion 20B free portion
20C tip part 23 width direction central part 27 adhesion area 30 perforation

Claims (1)

A diaper having a liquid-absorbent core interposed between a liquid-permeable top sheet and a liquid-impervious back sheet, and having a front waistline region, a back waistline region, and a crotch region located between these regions In the disposable diaper having an adhesive tape that can be used to roll the diaper on the outer surface of the back sheet in any one of the front and rear waist areas,
The pressure-sensitive adhesive tape is formed of two first and second pressure-sensitive adhesive tapes extending in parallel to each other in the waist circumference direction of the diaper, and the first and second pressure-sensitive adhesive tapes are either one of the front and rear waist circumference regions. One end of the first pressure-sensitive adhesive tape is formed of one end portion positioned at the center in the width direction and fixed to the outer surface of the back sheet so as to be spaced apart in the vertical direction , and a freely deformable free portion excluding the one end portion. A portion is located on the left side in the waist direction in the middle portion in the width direction, and one end portion of the second adhesive tape is located on the right side in the waist direction in the middle portion in the width direction. The free part of the tape is folded so that it has adhesive zones at required portions on both sides of the tape so as to be stretchable in the longitudinal direction of the tape, and the tip of the free part of the first adhesive tape is one end of the second adhesive tape. From the waist to the waist Extending in a direction leftward, the tip portion of the free portion of the second adhesive tape, extending the waist direction rightward from the end portion of the first adhesive tape,
In the diaper, the folded state of the free parts of the first and second adhesive tapes is held by the adhesive region, and the free part of the first adhesive tape is freed when the free part is extended in the circumference direction. The diaper is characterized in that a portion extends leftward in the waist circumference direction, and a free portion of the second adhesive tape extends rightward in the waist circumference direction .

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