JP2004261332A - Absorptive article and absorbing pad holder - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an absorptive article where an absorbing pad is not deviated. <P>SOLUTION: The absorptive article consists of: the absorbing pad P provided with a rear surface sheet 42 having first engaging parts 31; and an absorbing pad holder with second engaging parts 30. By engaging the first engaging parts 31 and the second engaging parts 30 with each other, the absorbing pad P is fitted to the absorbing pad holder. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an absorbent article in which an absorbent pad such as a urine absorbing pad or a sanitary napkin having a back sheet is attached to an absorbent pad holder such as a diaper cover, a disposable diaper, or a sanitary short, and an absorbent pad holder.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a deployable disposable diaper as an absorbent pad holder having a top sheet made of a liquid-permeable nonwoven fabric, a liquid-impermeable backsheet, and an absorbent interposed therebetween, is a deployable disposable diaper especially for adults. , Since the cost per sheet is high, a urine absorbing pad, which is an absorbent pad having a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorber interposed therebetween, is used as a development type disposable diaper. And used on the top sheet of the No. 1 and the urine absorbing pad absorbed and held the excrement, and then only the urine absorbing pad was replaced. In this case, the unfolded disposable diaper is used to hold the urine absorbing pad on the top sheet.
[0003]
However, in such a usage method, unless the urine absorbing pad is fixed on the top sheet of the disposable paper diaper, the urine absorbing pad is displaced from a desired position, and excrement leaks and contaminates the disposable paper diaper. There was a problem that it had to be replaced frequently.
Therefore, an engaging portion made of a male material is attached to the surface of the back sheet of the urine absorbing pad, and the engaging portion is engaged with a top sheet made of a nonwoven fabric of the unfolded disposable diaper. It was attached to the surface (Patent Document 1 etc.).
[0004]
[Patent Document 1]
JP-A-2002-642 [0005]
[Problems to be solved by the invention]
However, in such a urine absorbing pad, since the engaging portion made of a male material is attached and held on the surface of a top sheet made of a nonwoven fabric of a disposable paper diaper, the urine absorbing pad is attached and detached several times. However, there has been a problem that the top sheet is fluffed, the engaging force is reduced, the urine absorbing pad is displaced, and excrement leaks to stain the unfoldable paper diaper.
Therefore, an object of the present invention is to provide an absorbent article in which an absorbent pad does not shift.
[0006]
[Means for Solving the Problems]
Therefore, the invention according to claim 1 is an absorbent article, comprising: an absorbent pad having a back sheet having a first engagement portion;
An absorbent pad holder having a second engagement portion,
The absorption pad is attached to the absorption pad holder by engaging the first engagement portion and the second engagement portion.
[0007]
Therefore, it is possible to provide an absorbent article in which the absorbent pad does not shift.
[0008]
According to a second aspect of the present invention, in the absorbent article according to the first aspect, the absorbent pad holder has a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent body interposed therebetween. And characterized in that:
[0009]
Therefore, even if excrement leaks from the absorbent pad, the absorbent article of the absorbent pad holder absorbs the excrement, so that an absorbent article that does not leak can be provided.
[0010]
According to a third aspect of the present invention, in the absorbent article according to the first or second aspect, the first engaging portion is a male material, and the second engaging portion is a female material. .
[0011]
Therefore, the absorbent pad and the absorbent pad holder can be easily engaged and attached.
[0012]
According to a fourth aspect of the present invention, in the absorbent article according to any one of the first to third aspects, an engaging force between the first engaging portion and the second engaging portion satisfies the following condition. It is characterized by.
90 degree peel strength in MD direction: 0.49-4.9N / 25mm
MD direction shear strength: 4.9-29.4N / 25mm
[0013]
Therefore, it is possible to provide an absorbent article that retains a sufficient engaging force, attaches the absorbent sheet to the surface, and further shifts the absorbent pad, and easily removes the absorbent pad from the absorbent pad holder. .
[0014]
According to a fifth aspect of the present invention, in the absorbent article according to any one of the first to fourth aspects, the engaging force between the first engaging portion and the second engaging portion is reduced in continuous peel strength. Is less than 10%.
[0015]
Therefore, even if the absorbent pad is detached from the absorbent pad holder a plurality of times, a predetermined engaging force can be maintained, and an absorbent article in which the absorbent pad does not further shift can be provided.
[0016]
According to a sixth aspect of the present invention, in the absorbent article according to any one of the first to fifth aspects, the degree of stiffness of the second engagement portion is 50 to 200 mm.
[0017]
Therefore, when the absorbent pad holder is attached to the body, the second engaging portion does not have a rough feeling and easily follows the body, so that a gap between the body and the absorbent article can be prevented, and the leakage can be prevented. It is possible to provide an absorbent article that does not have a good fit and a good wearing feeling.
[0018]
The invention according to claim 7 is the absorbent article according to any one of claims 2 to 6, wherein the friction coefficient in the MD direction of the second engagement portion is 0.3 to 5.0. And
[0019]
Therefore, an absorbent article having a moderately smooth top sheet can be provided.
[0020]
The invention according to claim 8 is the absorbent article according to any one of claims 2 to 7, wherein the second engagement portion has a plurality of mesh holes, and the diameter of the holes is 0.2 to 0.2. 6.0 mm, and the density of the holes in the top sheet is 0.2 to 5.0 holes / cm ² .
[0021]
Therefore, it is possible to provide an absorbent article including the second engaging portion that can hold and absorb a sufficient absorbing force.
[0022]
According to a ninth aspect of the present invention, in the absorbent article according to any one of the first to eighth aspects, a visible attachment position is displayed on the second engagement portion.
[0023]
Therefore, the absorbent pad can be easily attached to the absorbent pad holder.
[0024]
According to a tenth aspect of the present invention, in the absorbent pad holder, a second engaging portion that engages with the first engaging portion provided on the liquid-impermeable back sheet of the absorbent pad is provided.
[0025]
Therefore, it is possible to provide an absorbent pad holder in which the absorbent pad does not shift.
[0026]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 2 is a development view of a disposable paper diaper as an example of an absorbent pad holder of the present invention. The unfoldable disposable diaper has a liquid-permeable top sheet 11 in which a nonwoven fabric or a film having a plurality of mesh holes is formed in a rectangular shape, and a cutout 40 is provided at a substantially central portion of a long side thereof. And a liquid-impermeable backsheet 12 made of polyethylene or the like having the same shape as above, and an absorbent body 13 in which a high molecular weight absorbent polymer is dispersed in a cotton-like pulp interposed therebetween. The surface of the absorber 13 is covered with a tissue paper 18 for absorption. Further, the absorber 13 includes an upper absorber 14 located on the top sheet 11 side and a lower absorber 15 located on the back sheet 12 side.
[0027]
Front flaps 21A and 21B and rear flaps 22A and 22B are extended to the left and right sides of the front body 16 and the back body 19 of the unfolded diaper, respectively, and fastening tapes 23 are attached to the ends of the rear flaps 22A and 22B. Each is attached. On the other hand, solid gathers (not shown) are appropriately arranged on both sides of the top sheet 11 along the MD direction which is the longitudinal direction.
[0028]
By the way, on the surface of the top sheet 11 of the tape-type paper diaper of the present invention, there is provided a second engaging portion 30 of a female material. The second engaging portion 30 is made of a nonwoven fabric or the like, and has a 90-degree peel strength in the MD direction of 0.49 to 4.0. It satisfies that the shear strength in the MD direction is 4.9 to 29.4 N / 25 mm, and that the decrease in strength is less than 10% by a continuous peel strength test. The degree of stiffness of the second engaging portion 30 is 50 to 200 mm, and the coefficient of friction in the MD direction by a KES-SE tester manufactured by Kato Tech Co. is 0.3 to 5.0. In addition, the absorption characteristics by the 10-point method are preferably maintained at 7 points or more. Further, as shown in FIG. 2, the diameter D of the mesh-shaped holes 30a is 0.2 to 6.0 mm. The density of the holes 30 a in the sheet 11 is 0.2 to 5.0 holes / cm ² .
[0029]
Here, a method of measuring the 90-degree peel strength in the MD direction will be described.
First, the second engaging portion 30 is appropriately cut into a rectangle along the MD direction and the CD direction to form a test piece S1, and the test piece S1 is pasted on a stainless steel panel previously fixed to the table T with a double-sided tape. Fix both ends with adhesive tape.
[0030]
Next, as shown in FIGS. 3 (a) and 3 (b), the engaging portion 30 is appropriately cut into a rectangle along the CD direction and the MD direction, and the surface thereof is appropriately cut along the MD direction and the CD direction. The first engaging portion 31, which is a male material cut into a rectangle, is attached to form a test piece S2. Further, as shown in FIG. 4, the first engaging portion 31 of the test piece S2 is engaged with the test piece S1, and the CD direction of the first engaging portion 31 and the CD direction of the test piece S1 are different from each other. Are arranged in the same direction, and the portion where the first engaging portion 31 is adhered is reciprocated once in the MD direction from the back surface B side of the test piece S2 with a 19.6N roller, so that the test piece S1 The second engaging portion 30 and the first engaging portion 31 of the test piece S2 are firmly engaged.
[0031]
Then, a 9.8N weight is attached to the clip via a string, and the clip is attached to the end of the test piece S2. The right angle portion such as the corner of the table T is used to connect the test piece S1 to the test piece S2. A 9.8N shear force F is applied for 10 seconds.
Thereafter, as shown in FIG. 5, the jig C is set so that the final peel angle θ is 90 degrees, and the test piece S2 is peeled at a tensile speed of 300 mm / min from a direction opposite to the shearing force F. Then, the average value of the concavo-convex load calculated by the tensile test software SHIKIBU is defined as a 90-degree peel strength in the MD direction. The above measurement is performed at room temperature.
[0032]
Next, a method for measuring the shear strength in the MD direction will be described.
First, in the above-described measurement of the 90-degree peel strength in the MD direction, the same test pieces S1 and S2 formed in FIGS. By reciprocating, the second engagement portion 30 of the test piece S1 and the first engagement portion 31 of the test piece S2 are firmly engaged.
Next, as shown in FIG. 6, one end of the test piece S2 and one end of the test piece S3 are attached and fixed to the tensile tester A, and are pulled in the shear direction G at a pulling speed of 300 mm / min. Is the shear strength in the MD direction. This measurement is also performed at room temperature.
[0033]
Further, a method for measuring the continuous peel strength will be described.
The method of measuring the continuous peeling strength is as follows. The first engaging portion 31 which is a male material and the second engaging portion 30 which is a female material are repeatedly engaged and disengaged at the same location, and the And the peel strength U5 at the time of the fifth engagement are measured, and the strength decrease is expressed as [(U1−U5) / U1] × 100 (%).
Note that the method of measuring the peel strength U1 and the peel strength U5 is the same as the above-described 90-degree peel strength in the MD direction, and thus the description is omitted.
[0034]
A method of measuring the waist will be described.
First, the test piece S3 is appropriately cut into a rectangle along the CD direction and the MD direction, and then arranged so as to wrap the rear end of the scale E at the rear end of the test piece S3 as shown in FIG. Next, the scale E is shifted in the direction of the arrow so as to increase the amount of protrusion of the tip of the test piece S3, and when the tip of the test piece S3 is bent downward, the tip of the scale B is moved from the tip of the test piece S3. The distance L to the waist is measured and defined as waist. This measurement is also performed at room temperature.
[0035]
Next, a method of measuring the absorption characteristics by the 10-point method will be described.
First, a single piece of Ellière toilet paper manufactured by Daio Paper Co., Ltd. is stacked on ten sheets, or three cuts of Ellière kitchen paper manufactured by Daio Paper are stacked and folded in two, and a fragment of the top sheet 11 is placed thereon. Place. On the top sheet 11, a measuring plate provided with 10 holes of 2 cm in diameter arranged in series at 10 places is placed, and artificial urine colored in each of the holes is dropped one by one, and for the holes absorbed within 2 seconds, After 3 minutes, artificial urine is added dropwise. Then, after 3 minutes, the artificial urine was added dropwise to the pores absorbed within 2 seconds, and the number of pores absorbed within 2 seconds was counted. And This measurement is performed at room temperature.
[0036]
When attaching the urine absorbing pad serving as an absorption pad to the unfolded disposable diaper configured as described above, the unfolded disposable diaper is first opened as shown in FIG. Next, the first engaging portion 31 of the urine absorbing pad P having the male first engaging portion 31 on the back surface of the liquid-impermeable back sheet 42, and the female member provided on the surface of the top sheet 11 of the disposable diaper. The material is engaged with the second engaging portion 30 and attached to form an absorbent article.
[0037]
Then, the buttocks of the user in the lying state are placed on the back body 19 at the approximate center of the unfolded disposable diaper to which the urine absorbing pad P is attached so that the waist rests on the back body 19, and the base portions of both legs are respectively placed in the notches 40. Further, the front body 16 is applied to the abdomen of the user, and the fastening tapes 23 on the rear flaps 22A and 22B of the back body 19 are engaged with the front body 16 of the back sheet 12, respectively. I do.
[0038]
When the absorbent of the urine absorbing pad P has absorbed a certain amount of excrement, the urine absorbing pad P is replaced.
First, the fastening tape 23 engaged with the front body 16 of the back sheet 12 is peeled off, and the developed paper diaper is opened. Then, the urine absorbing pad P is peeled off from the deployable paper diaper, and the engaging member 31 of the new urine absorbent pad P is attached to the second engaging portion 30 on the surface of the top sheet 11 of the deployable paper diaper. Attach to the user in the procedure.
[0039]
Note that, in this example, a visible mounting position display for men, women, or the like is given to the second engaging portion 30 by flexographic printing or the like, and the position where the urine absorbing pad P is mounted is changed according to gender. You may.
Further, the second engagement portion 30 may be formed integrally with the top sheet 11, or may be formed separately and attached to the top sheet 11.
[0040]
Furthermore, in the above-described example, the second engaging portion 30 is a female material, and the first engaging portion 31 is a male material. However, the present invention is not limited to this. Both may be engaged with each other by using the one engaging portion 31 as a female material. In this case, since the second engaging portion 30 which is a male material may directly touch the skin, it is preferable that the second engaging portion 30 be formed of a flexible material which does not hurt even if it touches the skin.
[0041]
In addition, in the above-described example, the urine absorbing pad P is attached to the unfolded paper diaper by engaging the both with the second engaging portion 30 being a female material and the first engaging portion 31 being a male material, but the present invention is not limited thereto. However, the present invention is not limited to this. The first engaging portion 31 is an adhesive tape, and the second engaging portion 30 is a porous film or a non-woven fabric subjected to heat embossing. You may make it stick and attach to.
[0042]
Further, the first engagement portion 31 or the second engagement portion 30 may be a mechanical hook. Here, the mechanical hook means a filament arranged on one base sheet made of non-woven fabric or the like so as to form a large number of arc-shaped female members, and countless projecting males on the other base sheet. A material is arranged and brought into contact with each other so as to be releasably bonded.
[0043]
Further, the second engaging portion 30 of the above-described example may be formed of a polyester, polyamide, or polypropylene woven fabric, a knitted fabric, or a female material having a loop formed completely on the surface of a tricot fabric.
[0044]
In addition, for example, “Magic Tape” (registered trademark, manufactured by Kuraray Co., Ltd.), “Quicklon” (registered trademark, manufactured by YKK Co., Ltd.), “Majicloth” may be added to the first engaging portion 31 or the second engaging portion 30 of the present invention. (Registered trademark, manufactured by Kanebo Bell Touch Co., Ltd.) and "CS-200" (trade name, manufactured by 3M Company).
[0045]
In the above-described example, the absorber 13 has the two-layer structure of the upper absorber 14 located on the top sheet 11 side and the lower absorber 15 located on the back sheet 12 side, but is not limited thereto. Instead, it may have a one-layer structure or a structure having three or more layers.
[0046]
Further, in the above-described example, the example in which the urine absorbing pad P is used by attaching it to the expandable paper diaper has been described. However, the present invention is not limited to this, and may be used only with the expandable paper diaper. That is, it can be used as an absorbent pad holder that absorbs and retains excretions with the absorbent type disposable diaper. In this case, it is desirable that the second engaging portion 30 made of a female material has such a softness that it does not hurt even when directly touching the skin of the user.
[0047]
Further, in the above-described example, an example in which the urine absorbing pad P is attached to the unfolded paper diaper and used has been described. However, the present invention is not limited to this, and the urine absorbing pad P is attached to the pants-type paper diaper and used. You may apply to the example which does. Further, the present invention may be applied to an example in which the diaper is attached to a diaper cover. In this case, a second engaging portion made of a female material is provided on the surface of the diaper cover, which is the use surface side, to engage with the first engaging portion made of the male material.
In addition, the present invention may be applied to an example in which a sanitary napkin as an absorbent pad is attached to sanitary shorts as an absorbent pad holder and used. In this case, a first engaging portion as a male material is provided on the back side of the back sheet of the sanitary napkin, and a second engaging portion that engages with the first engaging portion is provided on the surface on the use surface side of the sanitary shorts. Prepare. As described above, the present invention can be applied to an absorbent pad holder to which an absorbent pad is attached and held.
[0048]
【The invention's effect】
As described above in detail, according to the present invention, it is possible to provide an absorbent article in which the absorbent pad does not shift.
[Brief description of the drawings]
FIG. 1 is an exploded view of an exploded disposable diaper as an example of an absorbent pad holder of the present invention.
FIG. 2 is an enlarged plan view of an engaging portion of the disposable diaper of FIG.
FIGS. 3A and 3B are a plan view and a cross-sectional view of a test piece for measuring a 90-degree peel strength in the MD direction.
FIG. 4 is an explanatory diagram illustrating a state of measuring a 90-degree peel strength in the MD direction.
FIG. 5 is an explanatory diagram illustrating a state of measuring a 90-degree peel strength in the MD direction.
FIG. 6 is an explanatory diagram for explaining how to measure the shear strength in the MD direction.
FIG. 7 is an explanatory diagram illustrating how to measure the waist.
FIG. 8 is a perspective view for explaining a state in which a urine absorbing pad as an absorbent pad is attached to an expandable paper diaper as an absorbent pad holder and used as an absorbent article.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 11 Top sheet 12 Back sheet 13 Absorber 14 Upper absorber 15 Lower absorber 16 Front body 18 Tissue 19 Back body 21A, 21B Front flap 22A, 22B Rear flap 23 Fastening tape 30 Second engaging portion 30a Hole 31 First member Joint 42 Back sheet A Tensile tester D Diameter F Shear force E Scale G Shear direction P Urine collection pad (absorption pad)
S1, S2, S3 Test piece T Table θ Final peel angle

Claims (10)

An absorbent pad including a back sheet having a first engagement portion;
An absorbent pad holder having a second engagement portion,
An absorbent article, wherein the absorbent pad is attached to the absorbent pad holder by engaging the first engaging portion and the second engaging portion. The absorbent article according to claim 1, wherein the absorbent pad holder includes a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent body interposed therebetween. The said 1st engaging part is a male material, and the said 2nd engaging part is a female material, The absorbent article of Claim 1 or 2 characterized by the above-mentioned. The absorbent article according to any one of claims 1 to 3, wherein an engagement force between the first engagement portion and the second engagement portion satisfies the following condition.
90 degree peel strength in MD direction: 0.49-4.9N / 25mm
MD direction shear strength: 4.9-29.4N / 25mm The absorbing force according to any one of claims 1 to 4, wherein the engaging force between the first engaging portion and the second engaging portion makes the continuous peel strength decrease in strength less than 10%. Goods. The absorbent article according to any one of claims 1 to 5, wherein the degree of stiffness of the second engagement portion is 50 to 200 mm. The absorptive article according to any one of claims 2 to 6, wherein the second engaging portion has a coefficient of friction in the MD direction of 0.3 to 5.0. The second engaging portion has a plurality of mesh holes, the diameter of the holes is 0.2 to 6.0 mm, and the density of the holes in the top sheet is 0.2 to 5.0 holes / cm. characterized in that it is a ^2, the absorbent article according to any one of claims 2 to 7. The absorptive article according to any one of claims 1 to 8, wherein a visual indication of a mounting position is given to the second engaging portion. An absorption pad holder, comprising: a second engagement portion that engages with a first engagement portion provided on a liquid-impermeable back sheet of the absorption pad.

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