JP3611684B2 - Disposable diapers - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a deployable disposable diaper having a waist holding member, and more particularly, to a disposable diaper excellent in fit, in which the diaper does not slide down during wearing.
[0002]
[Background Art and Problems to be Solved by the Invention]
Conventionally, it comprises a liquid-permeable top sheet, a liquid-impermeable back sheet, and a liquid-retaining absorbent interposed between both sheets, and at least any of the ventral part or the back part An unfoldable disposable diaper in which a pair of waist holding members is arranged on both the left and right sides of the one is widely used.
[0003]
Specific examples of such disposable diapers include the disposable diapers shown in FIG.
A conventional disposable diaper 101 shown in FIG. 5 includes a liquid-permeable top sheet 102, a liquid-impermeable back sheet 103, and a liquid-retaining absorbent 104 interposed between the two sheets. A pair of waist holding members 110 and 110 'are disposed on both the left and right sides of the back portion B'. Further, the waist holding members 110 and 110 ′ are provided with a fastening member 111 made of a convex member of a mechanical fastener for fastening the waist holding members 110 and 110 ′ at the front end of the one 110 and the top sheet 102 side. Moreover, the diaper fastening member 120 which wears the diaper which consists of a convex member of a mechanical fastener is distribute | arranged to the top sheet 102 side in the right-and-left both-sides edge part of ventral | abdominal side part A '.
And such a disposable diaper makes the said fastening member 111 provided in the front-end | tip part of one said waist holding member 110 contact | abut to the back seat side of the other waist holding member 110 ', and is the waist holding member 110. , 110 ', and the diaper is fastened by bringing the diaper fastening member 120 into contact with the back sheet side of the waist holding members 110, 110' that have been fastened. Had gone.
[0004]
However, in such a conventional disposable diaper, since the waist holding member is formed in a plane by a single sheet material, the fit of the waist holding member to the wearer's body is inferior, and the diaper itself slides down. There was a problem that the fit of diapers was inferior.
In this specification, “wearer” means a person who performs a wearing operation, such as a mother or a caregiver, and “wearer” means a person who wears and uses a diaper, such as an infant, an elderly person, etc. Means. Further, the “wearer” and the “wearer” may be the same person.
[0005]
Accordingly, an object of the present invention is to provide a disposable diaper having excellent fit, which does not slide down during wearing.
[0007]
[Means for Solving the Problems]
The present invention comprises a liquid-permeable top sheet, a liquid-impermeable back sheet, and a liquid-retaining absorbent interposed between the two sheets, and either the ventral part or the back part. In the unfoldable disposable diaper, a waist holding member is arranged on either side, and further, a diaper fastening part is provided on both the left and right sides opposite to the side on which the waist holding member is provided. said waist holding member is disposed on each of the right and left sides of the ventral or dorsal, both the lumbar support member, the openings are provided, one of said waist holding member, the waist hold It has a member fastening portion, and is attached so that the waist holding member fastening portion of the one waist holding member is engaged with the back seat side of the base end portion of the other waist holding member. And fixing the waist holding member of the one waist holding member In a state where the second waist holding member is fixed to the base end of the other waist holding member, the distal end of the other waist holding member reaches the base end of the one waist holding member. It provides diapers .
[0008]
Also, the present invention provides a pair of the waist holding member is one that at least one of which provides the disposable diaper having elastic.
Moreover, this invention provides the said disposable diaper in which at least one part has the elasticity of the waist part of the abdominal side or the waist part of the back side.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, one form of the disposable diaper of this invention is demonstrated in detail with reference to drawings.
Here, FIG. 1 is a perspective view showing one form of the disposable diaper of the present invention, FIG. 2 is a perspective view showing an aspect in the middle of wearing the disposable diaper of the form shown in FIG. 1, and FIG. It is a perspective view which shows the disposable diaper which assembled.
[0010]
A disposable diaper 1 having the form shown in FIG. 1 includes a liquid-permeable top sheet 2, a liquid-impermeable back sheet 3, and a liquid-retaining absorbent 4 interposed between the two sheets. The lumbar holding member 10 is disposed on the back side B, and the diaper fastening portion is provided on both the left and right sides of the side opposite to the side on which the waist holding member 11 is provided (that is, the ventral side A). 20 is a deployable disposable diaper.
[0011]
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.
In addition, a solid guard 8 having a free end 8b on the inner side of the diaper, which is formed by fixing the leak-proof sheet 8a on the outer side of the diaper, is disposed on the top sheet 2.
Moreover, when the diaper is worn on the waist part 5 and the leg part 6 at the peripheral part of the absorbent body 4, the waist elastic elastic member 7a for fitting the waist part 5 and the leg part 6 to the wearer. The leg elastic elastic member 7b is sandwiched and fixed between the top sheet 2 and the back sheet 3. That is, a part (center part) of the waist part 5 on the abdominal side and the back side is made to be stretchable.
The free end 8b is provided with a three-dimensional guard elastic elastic member 7c.
Such a configuration is the same as a conventional unfolded disposable diaper.
[0012]
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.
In this embodiment, a nonwoven fabric is used as will be described later.
[0013]
Further, as the back sheet 3, a liquid-impermeable and vapor-permeable film sheet stretched by adding a filler to a thermoplastic resin, a fiber assembly such as a nonwoven fabric, or a laminated sheet of these is used. In the form, a non-woven fabric or a laminated sheet on which the non-woven fabric is located is used.
[0014]
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, the middle layer, and the lower layer of the absorber, or may be mixed 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.
[0015]
Moreover, the said waist | hip | lumbar part holding member fastening part 11 and the said diaper fastening part 20 are formed of the convex member of a hook_and_loop | surface fastener. Examples of the convex member include “magic tape” (registered trademark, manufactured by Kuraray Co., Ltd.), “Quicklon” (registered trademark, manufactured by YKK), “Majikurosu” (registered trademark, manufactured by Kanebo Bell Touch Co., Ltd.), A known (commercially available) convex member of a hook-and-loop fastener such as a sheet provided with a large number of convex engagement members such as a mushroom shape can be used without particular limitation.
[0016]
As the leak-proof sheet 8a for forming the three-dimensional guard 8, a generally known one can be used without particular limitation, but a hydrophobic nonwoven fabric or a water-repellent nonwoven fabric is preferably used.
[0017]
In addition, the pair of waist holding members 10 are both formed of a stretchable member and have stretchability. For this reason, in the part in which the said waist | hip | lumbar part holding member fastening part 11 is not provided, it can be expanded-contracted in the longitudinal direction (circumferential direction of a diaper) of this waist | hip | lumbar part holding member 10, and fit property is improved more.
The stretchable member used at this time is a known nonwoven fabric or a film-type elastic material or thread that can be engaged with the convex member forming the waist holding member fastening portion 11 and has stretchability. A material in which rubber, flat rubber or the like is sandwiched between nonwoven fabrics is used without particular limitation.
[0018]
The waist elastic elastic member 7a, the leg elastic elastic member 7b, and the three-dimensional guard elastic elastic member 7c are preferably thread rubber, flat rubber, a film type elastic material, or a film-like foamed polyurethane. The stress at 50% elongation is preferably 40 to 150 grams.
[0019]
Thus, in the disposable diaper 1 of the present embodiment, as shown in FIG. 1, the waist holding member 10 has an elongated slit-like opening 12, and the longitudinal direction of the opening 12 extends in the waist holding member 10. It is provided toward the longitudinal direction.
[0020]
More specifically, the waist holding member 10 is disposed on each of the left and right sides of the back side B, and the opening 12 is provided in both the waist holding members 10.
By providing such an opening 12, an upper holding portion 15 and a lower holding portion 16 are formed between the base end portion 14 and the distal end portion 13.
The length L ₁ from the tip of the opening 12 is preferably 5 to 200 mm, and the length L ₂ from the side edge of the back side B is preferably 5 to 200 mm.
The width W ₁ of the widest portion of the opening 12 is preferably 0.1 to 50 mm.
The width W ₃ of the upper holding part 15 is preferably 5 to 150 mm, and the width W ₄ of the lower holding part 16 is preferably 5 to 150 mm.
The length _{L 3} of the opening 12 is preferably set to 50 to 500 mm.
[0021]
Further, both the waist holding members 10 have a waist holding member fastening portion 11 that fastens the waist holding member 10 so as to be fastened to each other on the top sheet 2 side. Thereby, both the waist | hip | lumbar part holding members are fastened mutually.
[0022]
Next, with reference to FIG. 2 and 3, the aspect of use of the disposable diaper 1 of this form is demonstrated.
First, in order to use the disposable diaper 1 of the present embodiment, as shown in FIG. 2, the waist holding member fastening portion 11 of one waist holding member 10 is used as the back sheet of the base end portion 14 of the other waist holding member 10. Engage with 3 sides. Thereby, the waist | hip | lumbar part holding member 10 is first fastened.
Next, the diaper fastening part 20 is engaged with the waist holding member 10 to fasten the diaper and use the diaper.
Such usage is possible even when the wearer is sleeping or standing.
[0023]
Since the disposable diaper 1 of this embodiment has the opening 12, the opening 12 opens up and down when the diaper is worn, and the upper holding part 15 and the lower holding part 16 are worn by the wearer. Fits closely to the skin and improves fit. For this reason, a diaper does not slide down during wearing.
Further, since the opening 12 and the waist holding member fastening portion 11 are provided on both waist holding members, the mounting operation can be performed from either the left or right side, and the mounting operation can be performed without worrying about the order of mounting. It can be performed and has excellent operability.
[0024]
Further, the disposable diaper 1 of the present embodiment forms the three-dimensional guard 8 by superposing the top sheet 2, the absorber 4 and the back sheet 3 according to a conventional method, and further disposing the leak-proof sheet 8a at a predetermined position. Then, the waist holding member 10 can be easily manufactured by placing it at a predetermined position.
[0025]
In addition, the disposable diaper of this invention is not restrict | limited to the form mentioned above, A various change is possible in the range which does not deviate from the meaning of this invention.
For example, the waist holding member fastening part 11 may be provided on any one of the waist holding members 10.
The waist holding member 10 can also be provided on the ventral side A.
Moreover, the said waist | hip | lumbar part holding member 10 can also be set as the form which provides a stretching property by providing an expansion-contraction part in the one part. Therefore, in this case, there is no need to use a stretchable member.
Moreover, the said waist | hip | lumbar part holding member fastening part 11 and the said diaper fastening part 20 may be formed with the normal hot melt adhesive instead of the above-mentioned convex member.
The opening may be a simple slit, and a plurality of slits may be provided.
[0027]
In the disposable diaper of the present invention, the shape of the opening 12 and the number of the openings 12 are not particularly limited as long as the desired effect of the present invention is obtained. For example, as shown in FIG. A plurality of the portions 12 may be arranged so that the longitudinal direction thereof is in the vertical direction of the diaper (the width direction of the waist holding member 10).
[0028]
【The invention's effect】
The disposable diaper of the present invention is excellent in fit property, without diaper slipping during wearing.
[Brief description of the drawings]
FIG. 1 is a perspective view showing one embodiment of a disposable diaper of the present invention.
FIG. 2 is a perspective view showing a state in the middle of wearing the disposable diaper of the form shown in FIG. 1;
FIG. 3 is a perspective view showing the assembled disposable diaper.
FIG. 4 is a perspective view showing another embodiment of the disposable diaper of the present invention.
FIG. 5 is a plan view showing a conventional disposable diaper.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Disposable diaper 2 Top sheet 3 Back sheet 4 Absorber 5 Waist part 6 Leg part 7a Waist elastic elastic member 7b Leg elastic elastic member 7c Three-dimensional guard elastic elastic member 8 Three-dimensional guard 10 Lumbar holding member 11 Lumbar holding member fastening part 12 opening part 13 tip part 14 base end part 15 upper holding part 16 lower holding part 20 diaper fastening part A ventral side part B back side part

Claims (3)

It comprises a liquid-permeable top sheet, a liquid-impermeable back sheet, and a liquid-retaining absorbent interposed between the two sheets, and the waist on either the ventral side or the back side In the deployable disposable diaper in which the holding member is arranged and the diaper fastening part is provided on both the left and right sides of the side facing the side where the waist holding member is provided.
The waist holding member is disposed on each of the left and right sides of the ventral side or the back side,
Both of the waist holding member, is provided with an opening,
One of the waist holding members has a waist holding member fastening portion, and the waist holding member fastening portion of the one waist holding member is connected to the back seat side of the base end portion of the other waist holding member. It is designed to be engaged and attached to
In the state where the waist holding member fastening portion of the one waist holding member is fastened to the base end portion of the other waist holding member, the distal end portion of the other waist holding member is the one waist holding member. A disposable diaper characterized by reaching the base end of the diaper . A pair of the waist holding member disposable diaper according to claim 1, wherein the at least one of and having an elasticity. The disposable diaper according to claim 1, wherein at least a part of the waist part on the ventral side or the waist part on the back side has elasticity.

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