JP3205689B2 - 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 disposable diaper which is worn by connecting the front and rear side regions with a tape fastener.

[0002]

2. Description of the Related Art Tape fasteners of this kind are known or well known. For example, Japanese Utility Model Laid-Open Publication No. Hei 7-22725 discloses a receiving sheet piece (so-called target tape) in which a tape fastener extending from one side edge of a front and rear side area of a disposable diaper is joined to an outer surface of the other side area. ) Discloses a diaper to be detachably fastened and worn. In the diaper before use, the fastener is folded inward along a fold line along the side edge of the diaper, and is temporarily attached to the inner surface of the diaper.

[0003]

In the tape fastener of the above-mentioned known examples, a sheet material such as a plastic film or a non-woven fabric is used as a tape base material, and an adhesive for connection is applied to one side of the base material. And a hook-and-loop fastener known by the name of magic tape or the like. Such a tape fastener has a higher rigidity than other members constituting the diaper. Therefore, while the tape fastener can be easily attached and detached, the rigidity causes irritation to the soft skin of the infant. If the tape fastener has a fold curve for folding inward, the part may be angular and give a particularly strong stimulus.

Accordingly, an object of the present invention is to prevent a rigid tape fastener from stimulating the skin.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a diaper which is formed by extending from one side edge of the front and rear side regions to the outside and forming a diaper.
It is premised that a disposable diaper in which a tape fastener having high rigidity can be detachably attached to the other of the front and rear side areas.

[0006] Under such a premise, the tape fastener
Extending Demoto end of the free end portion and its vicinity, in its outer surface, located on the outer surface side of the tape fasteners extending from said one side edge to its outer side, <br/> than the tape fasteners It is a feature of the present invention that it is loosely covered with a low-rigidity sheet material.

[0007]

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.

In the partially broken perspective view of the diaper 1 in the worn state shown in FIG. 1, the diaper 1 has a liquid-permeable top sheet 2, a liquid-impermeable back sheet 3, and interposed between the two sheets 2, 3. A front-side region 5;
It has a rear region 6 and a crotch region 7 located between the front and rear regions 5, 6. There are wings 6A on both left and right sides of the rear area 6,
A tape fastener 10 extends from the side edge 18, and the inner surface of the fastener 10 is detachably fixed to the receiving sheet piece 11 joined to the left and right outer surfaces of the front region 5. The diaper 1 in which the front and rear side regions 5 and 6 are connected by the tape fastener 10 in this manner is formed with a waist opening 12 and a pair of left and right leg openings 13. Elastic elastic members 35 and 36 are provided around the openings 12 and 13, and are joined to at least one of the inner surfaces of the front and back sheets 2 and 3 constituting the openings 12 and 13.

As is apparent from FIG. 2, which is an end view taken along the line II-II of FIG.
0A as a base material, the inner surface 14 of one end 15 of which is a wing 6A.
Is bonded to the outer surface 17 of the top sheet 2 constituting the above in a non-peelable manner. Sheet piece 10 extending from side edge 18 of wing 6A
A pressure-sensitive adhesive 22 is applied to the inner surface 21 of the free end portion 20 of A, and is fixed to the receiving sheet piece 11 indicated by a virtual line so as to be peelable. The tip portion 23 of the free end portion 20 is not coated with the adhesive 22 so as to be easily gripped. On the outer surface side of the wing 6A, there is a covering sheet 26 (see FIG. 1). With reference to the wing side edge 18, the sheet 26 has a portion A extending outward, and portions B and C extending inward. There is. The sheet 26 has a portion C having an outer surface 17 of the topsheet 2 and an outer surface 1 of the fastener 10.
6, and the portions A and B are separated without joining to the outer surface 16 of the fastener. Therefore, the covering sheet 26 can freely move in the vertical direction in the figure as shown by the solid line and the virtual line. Diaper 1 back sheet 3
Constitutes the base end portion of the wing portion 6A, and is joined to the outer surface of the inner end portion of the covering sheet 26 in a non-peelable manner.

[0010] The tape fastener 10 shown by a virtual line in FIG.
Is in a state when it is attached to the diaper 1 before use. The fastener 10 is bent inward at a folding curve 30 along the wing side edge 18, and is temporarily detachably attached to the inner surface of the topsheet 2. The folding curve 30 is formed when the sheet piece 10A of the fastener 10 is formed by heat shaping, and when the straight sheet piece is formed by bending for a long time, that is, when the sheet piece 10A has a so-called folding habit. There is. In any case, when the bent fastener 10 extends as shown by the solid line, the portion of the bent curve 30 becomes angular and may give a stimulus when the skin touches it. The end 15 where the sheet piece 10A is joined to the topsheet 2 is
Due to the increased rigidity of the joint, the proximal end of the relatively soft free end 20 that borders it tends to be angular and irritate the skin. However, in the diaper 1, since the base end portion of the fastener 10 and the bent line 30 are covered with the freely deformable portions A and B of the covering sheet 26, it is possible to suppress the stimulation of the fastener 10 to the skin. it can.

FIG. 3 is a drawing similar to FIG. 2 showing another example of the embodiment of the present invention. This diaper 1 wing 6A
Here, the back sheet 3 is longer than the top sheet 2 and extends sideways, and a tape fastener 10 is attached to the extended portion. The fastener 10 is composed of plastic sheet pieces 10A and 10B, and one end 15 of the sheet piece 10A is joined to the outer surface of the back sheet 3 and extends from the wing side edge 18 defined by the back sheet 3. Free end 2
The pressure-sensitive adhesive 22 is applied to the inner surface of the “0”. Sheet piece 10
In B, the outer surface is non-peelably joined to the inner surface of the back sheet 3, and the portion extending from the wing side edge 18 is non-peelable to the sheet piece 10A. The sheet piece 10A has a side edge 18.
Is bent inward at a fold curve 30 parallel to, and can be temporarily attached releasably to the inner surface of the sheet piece 10B. The sheet piece 10B not only reinforces the bonding of the sheet piece 10A to the back sheet 3 but also enables the sheet piece 10A to be temporarily attached, and has a release agent applied to the inner surface thereof. In the covering sheet 26, the portion C is non-peelably joined to the outer surface of the end portion 15 of the sheet piece 10A, and the portions A and B are separated from the sheet piece 10A. Part B is the wing side edge 1 from the right end of part C.
8, the part A extends from the side edge 18,
The base portion of the fastener 10 and the fold line 30 are covered.

In the diaper 1 configured as described above,
The covering sheet 26 reduces the irritation to the skin by the fastener 10.
The sheet 26 is used to release
The material is less rigid than the pieces 10A and 10B.
Preferably, for example, a basis weight of 30 to 300 g / m^Two Thermoplasticity
Synthetic fiber non-woven fabric, flexible with thickness of 0.02-0.07mm
Plastic film can be used. Figure
In the end views of a few, the covering sheet 26 is
In addition, the part B may be joined to the sheet piece 10A.
The wing 6A of the diaper 1 is provided with the topsheet 2 and / or the back.
Third sheet other than those constituted by the face sheet 3
The material can also be a component. In addition, the present invention
Is a substantially rectangular diaper without wings 6A.
It can also be applied. The tape constituting the tape fastener 10
Non-woven fabric or other sheet material
The adhesive area 22 in the illustrated example can be replaced with a product
Replace with hook-and-loop fastener elements known for their name magic tape
You can also. For joining various components of diaper 1
In addition to using adhesives such as hot melt adhesives,
We can also use welding technology for hot-melt materials
You.

[0013]

In the diaper according to the present invention, the tape fastener is loosely covered with a sheet having lower rigidity than a sheet piece constituting the fastener at the base end portion extending from the side edge of the diaper and in the vicinity thereof. Therefore, the irritation to the skin by those portions of the tape fastener can be reduced.

[Brief description of the drawings]

FIG. 1 is a partially broken perspective view of a diaper in a worn state.

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

FIG. 3 is an end view similar to FIG. 2 showing an example of the embodiment;

[Explanation of symbols]

 Reference Signs List 1 diaper 6 front side area 7 rear side area 10 tape fastener 18 side edge 20 free end 26 sheet part (covering sheet) 30 folding curve

Claims (2)

(57) [Claims] 1. A diaper comprising: a member extending from one side edge of a front and rear side region to an outside of the diaper;
A tape fastener having high rigidity is a disposable diaper that can be attached to and detached from the other of the front and rear side areas, and the extended base end of the free end of the tape fastener and the vicinity thereof are disposed on the outer surface side of the one side edge. extending from the its outer side located on the outer surface side of the tape fasteners,
The diaper described above, wherein the diaper is loosely covered with a sheet material having a lower rigidity than the tape fastener . 2. A tape fastener according to claim 1, wherein said tape fastener has a fold curve inwardly folded near the base end thereof, and said low-rigidity sheet material extends outwardly beyond said fold curve. The diaper described in 1.