JP3611679B2 - Disposable diapers - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a deployable disposable diaper having a diaper-fastening fastening tape having a mechanical fastener, and more particularly, the fastening tape does not come off due to an erroneous operation of the wearer, etc. Related to disposable diapers.
[0002]
[Background Art and Problems to be Solved by the Invention]
Conventionally, a liquid-permeable top sheet, a liquid-impermeable back sheet, and a liquid-retaining absorbent interposed between the two sheets are provided, and diapers are formed on the left and right side edges of the back side. A deployable disposable diaper in which a fastening tape for fastening is arranged and the fastening tape is formed by using a convex member of a mechanical fastener is widely used.
And the fastening tape currently formed using the convex member of the conventional mechanical fastener was formed by adhering the convex member to the whole surface.
[0003]
However, since these conventional fastening tapes can be removed by the weak force of wearers such as infants, the fastening tape may come off due to misoperation or mischief of the wearer, and the diaper may loosen or come off, causing excrement. There was a problem of leaking.
In addition, due to such a problem, it has become necessary for a person who accompanies a wearer such as a mother to frequently check whether or not the fastening tape has been removed at the time of wearing, and there is also a problem that the sense of security is poor.
[0004]
Accordingly, an object of the present invention is to provide a disposable diaper having a fastening fastener that is excellent in fastening force in a disposable diaper having a mechanical fastener as a fastening tape and that does not easily come off due to a wearer's misoperation or mischief. is there.
[0005]
[Means for Solving the Problems]
As a result of intensive studies to solve the above problems, the present inventors have achieved a disposable diaper comprising a fastening tape formed by fixing a part of the convex member to the tape body. I found out.
[0006]
The present invention has been made based on the above findings, and comprises a liquid-permeable top sheet, a liquid-impermeable back sheet, and a liquid-retaining absorbent interposed between the two sheets. In the unfolded disposable diaper in which the fastening tape for wearing diapers having convex members of mechanical fasteners is arranged on the left and right side edges of the back side portion, the fastening tape has a base end portion on the back side portion. The tape main body is fixed to the left and right side edges and the convex member fixed to the tape main body, and the convex member is fixed to the tape main body only on the base end side. And a non-fixed area not fixed to the tape main body is formed on the tip end side of the tape main body, and the convex member is formed on the non-fixed area. In the fixing area Te, to the front end portion of the portion of the tape main body are releasably adhesive via a temporary fixing material, it is intended to provide a disposable diaper characterized by.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the disposable diaper of the present invention with reference to the accompanying drawings.
For convenience of explanation, first, a disposable diaper 1 according to a reference form that is not an embodiment of the present invention (hereinafter also referred to as a disposable diaper according to the present embodiment) will be described with reference to FIGS.
Here, FIG. 1 is a plan view showing a disposable diaper 1 of a reference form , FIG. 2 is an enlarged side view showing a fastening tape in the form shown in FIG. 1, and FIG. 3 is in the form shown in FIG. It is an expansion perspective view which shows the usage condition of a fastening tape. FIG. 4 is an enlarged side view showing a fastening tape used in the disposable diaper according to the embodiment of the present invention.
[0008]
The diaper 1 discarded have shown to use in Figure 1, the top sheet 2 of liquid-permeable, and includes a back sheet 3 liquid-impermeable, and an absorbent body 4 of the liquid retention interposed between two sheets It is a deployment type disposable diaper by which the fastening tape 10 for diaper fastening which has the convex member 11 of a mechanical fastener is distribute | arranged to the right-and-left both side edge parts B1 and B2 of the back side part B.
[0009]
More specifically, in the disposable diaper according to the present embodiment, as shown in FIG. 1, the absorbent body 4 is curved and formed in an hourglass shape with a crotch region rolled, and the top sheet 2 and the back sheet 3 are also shaped as the absorbent body 4. Accordingly, the crotch region is curved as described above, and the absorber 4 is sandwiched and fixed by the top sheet 2 and the back sheet 3. Moreover, when the diaper is worn, the elastic elastic member 7 for fitting the waist part 5 and the leg part 6 to the wearer is worn on the waist part 5 and the leg part 6 at the peripheral part of the absorbent body 4. The sheet 2 and the back sheet 3 are fixed and provided.
Such a configuration is the same as a conventional unfolded disposable diaper.
[0010]
Moreover, the said fastening tape 10 is each affixed on the back sheet 3 side, and the convex member 11 of a mechanical fastener is fastened to the said top sheet 2 so that peeling is possible at the time of non-use. Further, a landing tape 8 for fastening the fastening tape 10 in a detachable manner is provided on the back sheet 3 on the ventral side A of the diaper.
[0011]
Next, the formation material of each member which comprises the said disposable diaper 1 is demonstrated. The top sheet 2 is preferably a liquid-permeable sheet that allows excretion to permeate the absorbent body, and has a touch close to underwear. Examples of such a liquid-permeable sheet include woven fabrics, nonwoven fabrics, and porous materials. A film etc. are mentioned preferably. Moreover, by the method of apply | coating hydrophobic compounds, such as a silicon-type oil agent and paraffin wax, to the periphery of the top sheet 2, or the method of apply | coating hydrophilic compounds like an alkyl phosphate ester to the whole beforehand, and wash | cleaning a periphery with warm water Water repellent treatment can be applied to prevent leakage due to bleeding of urine and the like at the periphery.
[0012]
Moreover, as the said back sheet 3, the liquid impervious and vapor permeable film sheet extended | stretched by adding a filler to a thermoplastic resin, or a fiber assembly is used.
[0013]
Moreover, as said absorber 4, what used together the high molecular water absorption polymer which used the defibrated pulp as the main material is preferable. The polymer water-absorbing polymer may be present in any one of the upper layer, middle layer, and lower layer of the absorbent body 4, or may be a mixture with pulp. The polymer water-absorbing polymer is preferably in the form of particles having a retention property capable of absorbing and retaining a liquid 20 times or more of its own weight and having a gelling property. Preferred examples include starch-acrylic acid (salt) graft copolymers, saponified starch-acrylonitrile copolymers, cross-linked sodium carboxymethyl cellulose, and acrylic acid (salt) polymers.
[0014]
Examples of the elastic elastic member 7 include thread rubber, flat rubber, film type elastic material, film-like foamed polyurethane, and the like, and those having a stress at 50% elongation of 40 to 150 grams are preferable.
[0015]
As the convex member 11 of the mechanical fastener constituting the fastening tape 10, “Magic Tape” (registered trademark, manufactured by Velcro), “Quicklon” (registered trademark, manufactured by YKK), “Majikurosu” (registered trademark, Kanebo Bell Touch Co., Ltd.) and other known (commercially available) mechanical hook tape convex members such as a sheet provided with a large number of convex engaging members 11a (see FIG. 2) such as a key shape or a mushroom shape. Can be used without limitation.
The landing tape 8 is made of a concave part of a mechanical fastener, and as the concave part, a fiber sheet such as a nonwoven fabric, a tricot knitted fabric, for example, a front yarn 50 denier, an 18 filament back yarn 20 denier, A knitted fabric of 26 gauge / inch knitted with three front stitches using a single filament yarn is used.
[0016]
In the disposable diaper 1 of the present embodiment, as shown in FIGS. 1 and 2, the fastening tape 10 has a tape body in which a base end portion 12 a is fixed to left and right side edges B 1 and B 2 of the back side B. 12 and the convex member 11 fixed to the tape main body 12, and the convex member 11 is fixed to the tape main body 12 only on the base end 12 a side, and fixed to the tape main body 12. The fixed region 14 is formed on the base end portion 12a side, and the non-fixed region 15 that is not fixed to the tape body 12 is formed on the distal end portion 12b side of the tape body 12 .
[0017]
More specifically, the convex member 11 has a rectangular shape, and is fixed to the tape body 12 via an adhesive on the one surface 12c side (top sheet 2 side) of the tape body 12. The adhesive used at this time is not particularly limited as long as it is usually used for bonding the convex member.
The convex member 11 is fixed in a rectangular shape. That is, each of the fixing area 14 and the non-adhesion area 15 is formed in a rectangular shape whose longitudinal direction is the width direction of the fastening tape 10.
Here, the length L of the convex member 11 is preferably set so that the T peel force between the convex member and the landing tape 8 when there is no non-fixed portion is 30 g or more. The ratio X / Y between X and the width Y of the non-adhering region 15 can be set to an arbitrary ratio for the purpose of freely adjusting the engagement force as long as the width Y is 0.3 cm or more. If the T peel force is less than 30 g, the engagement force with the landing tape 8 may be insufficient, which is not preferable.
Further, if the width Y is less than 0.3 cm, it is not preferable because even if the knob portion 13 is pulled, a shearing force hardly acts on the boundary 16 and the engagement force cannot be adjusted.
[0018]
The material for forming the tape body 12 is not particularly limited, and any material can be used without particular limitation as long as it is normally used as a diaper fastening tape.
[0019]
The tip portion 12 b of the tape main body 12 is fixed and in this folded state is folded back toward the one surface 12c side to form a handle portion 13.
[0020]
The disposable diaper 1 of this form can be used similarly to a normal unfolded disposable diaper. Then, when the fastening tape 10 is to be removed with the knob 13, as shown in FIG. 3, a tensile force (an arrow D <b> 1 in FIG. 3) is applied to the boundary 16 between the fixed area 14 and the non-fixed area 15. Direction force), the forces in the directions of arrows D3 and D2 act on the fixed region 14 and the non-fixed region 15, respectively. For this reason, a high shearing force is applied in the vicinity of the boundary 16 between the fixing area 14 and the non-adhering area 15, and as a result, the fastening tape 10 is difficult to be removed by an erroneous operation of a baby or a mischievous force.
In addition, in order to peel off smoothly, by peeling off with the edge part 11b side end part 11b of the said convex member 11, it peels off smoothly with the force comparable to the force required for peeling of the normal convex member 11. Can do.
[0021]
Moreover, the disposable diaper 1 of this form is manufactured like a normal disposable diaper using the fastening tape 10 formed by adhering the said convex member 11 to the said tape main body 12 in the form shown in FIG. 2 according to a conventional method. can do.
[0022]
Next, a disposable diaper as an embodiment of the present invention will be described with reference to FIG. The disposable diaper of this embodiment, with reference to FIG. 4, will be described full § scan cleaning tape 10A that are used in disposable diaper of the present embodiment. Note that here, differences from the embodiment shown in FIGS. The description given in the description of the embodiment shown in FIGS.
[0023]
In the fastening tape 10A of the form shown in FIG. 4, the tape body 12A is bent at the distal end portion 12bA toward the proximal end portion 12aA and toward the one surface 12cA, and further includes a fixed area 14A and a non-fixed area 15A. In the vicinity of the boundary 16A, it is bent toward the tip 12bA and toward the one surface 12cA. The convex member 11A is adhered to the end portion 11bA on the tip end portion 12bA side in a detachable manner via the bent tape body 12A and the temporary fixing material 17A. By being comprised in this way, in addition to the same effect as the effect which the disposable diaper of the form shown in said FIGS. 1-3, there exists an effect that mounting | wearing becomes still easier. The temporary fixing material 17A that can be used at this time can be used without particular limitation as long as it can releasably adhere the tape body 12A and the convex member 11A. Examples thereof include a pressure-sensitive adhesive, an acrylic pressure-sensitive adhesive, and a double-sided tape coated with these pressure-sensitive adhesives. As shown in this embodiment, a "non-locked zone that are not fixed" in the present invention, that is peelably adhesive.
[0024]
5 to 8 show other examples of the fastening tape .
In the fastening tape 10B shown in FIG. 5, the convex member 11B is partially fixed and fixed to the tape body 12B. Examples of the partially fixed pattern at this time include dots and wavy patterns.
[0025]
The fastening tape 10C shown in FIG. 6 has a non-fixed area 15C extending from the tip of the tip 12bB of the tape body 12, and the knob 13 is positioned on the non-fixed area 15C. .
[0026]
In the fastening tape 10D shown in FIG. 7, the tape body is composed of a distal end tape body 12D and a proximal end tape body 12D ′. Thus, the tape main body does not necessarily need to be continuous, and may be composed of two or more members.
[0027]
In the fastening tape 10E shown in FIG. 8, the tape body is composed of a distal end tape body 12E and a proximal end tape body 12E ′. And base end side tape main part 12E 'is connected with the base end part side of convex member 11E.
[0028]
In addition, the disposable diaper of this invention is not restrict | limited to the above-mentioned form, A various change is possible in the range which does not deviate from the meaning of this invention.
For example, the above knob 13 is subjected to a coloring or embossing or the like, but it may also be to distinguish a mark.
[0029]
【The invention's effect】
The disposable diaper of the present invention is a disposable diaper having a mechanical fastener as a fastening tape, and the fastening tape is excellent in fastening force and does not easily come off due to an erroneous operation or mischief of the wearer.
More specifically, the disposable diaper according to the present invention does not easily release the fastening tape depending on the force of an infant or the like, so that the diaper does not loosen or come off and does not leak. Since there is no need to confirm the above, the feeling of security of the accompanying person such as the mother is also high.
[Brief description of the drawings]
FIG. 1 is a plan view showing a disposable diaper of a reference form .
FIG. 2 is an enlarged side view schematically showing a fastening tape in the form shown in FIG. 1;
FIG. 3 is an enlarged perspective view schematically showing a usage mode of the fastening tape in the form shown in FIG. 1;
FIG. 4 is an enlarged side view schematically showing a fastening tape used in the disposable diaper of the present invention.
Figure 5 is an enlarged side view showing another form of the full § scan cleaning tape schematically.
Figure 6 is an enlarged side view showing another form of the full § scan cleaning tape schematically.
Figure 7 is an enlarged side view showing another form of the full § scan cleaning tape schematically.
Figure 8 is an enlarged side view showing another form of the full § scan cleaning tape schematically.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Disposable diaper 2 Top sheet 3 Back sheet 4 Absorber 5 Waist part 6 Leg part 7 Elastic elastic member 8 Landing tape 10 Fastening tape 11 Convex member 11a Engagement member 12 Tape main body 12a Base end part 12b Tip part 12c One side 13 Picking part 14 Adhering area 15 Non-adhering area
17A Temporary fixing material A Abdominal side B Back side

Claims (1)

It comprises a liquid-permeable top sheet, a liquid-impermeable back sheet, and a liquid-retaining absorbent interposed between the two sheets. In a deployable disposable diaper in which a fastening tape for wearing a diaper having a convex member is arranged,
The fastening tape is composed of a tape main body whose base end is fixed to the left and right side edges of the back side portion, and the convex member fixed to the tape main body,
The convex member is fixed to the tape main body only on the base end side, and forms a fixing area fixed to the tape main body on the base end side, and is not fixed to the tape main body. A fixed area is formed on the tip side of the tape body ;
In the non-adhesion area, the convex member is detachably adhered to the portion on the tip end side of the tape body via a temporary fixing material.
A disposable diaper characterized by that.

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