JP2003299692A - Disposable paper diaper - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an inexpensive disposable paper diaper for surely preventing liquid leakage. <P>SOLUTION: This disposable paper diaper has a paper diaper body having a liquid permeable top sheet for covering the surface side, a liquid impermeable back sheet for covering the reverse side, an absorber interposed between the respective sheets, and a liquid leakage preventive barrier arranged on a surface of the top sheet on the lengthwise directional both sides of the absorber. It is used by sticking the paper diaper body to the body via a pressure sensitive adhesive layer by arranging the pressure sensitive adhesive layer having a surface covered with releasing paper in an upper part of the liquid leakage preventive barrier. <P>COPYRIGHT: (C)2004,JPO

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 adapted to be used by attaching a main body of a diaper to a body.

[0002]

2. Description of the Related Art Conventionally, various types of pants-type or tape-type disposable diapers have been proposed and provided on the market, but their basic configurations are almost the same. FIG. 6 is a plan view of the main body of a tape-type disposable diaper as an example thereof, which is developed and seen from the front side, and FIG.

As shown in the figure, the disposable diaper 100 is
A liquid-permeable top sheet 101 made of non-woven fabric, a liquid-impermeable back sheet 102 made of polyethylene, etc., an absorbent body 103 made of cotton-like pulp interposed between these sheets, and the absorbent body 103 A paper diaper body 105 composed of a three-dimensional gather 104 and the like provided on the front surface side of the liquid permeable top sheet 101 so as to be sandwiched from both sides in the direction is provided so as to straddle the front body Fo and the back body Bo, and the entire body is a pseudo hourglass shape in plan view. It is what

The three-dimensional gather 104 has a function as a barrier for preventing liquid leakage, and is a liquid-impermeable non-woven fabric containing an elastic expansion / contraction member 104G made of one or a plurality of rubber threads. It is provided on the surface of the top sheet 101 in a standing state. Further, the elastic elastic members 106G, 107G, which are the same as the elastic elastic member 104G,
108G are respectively provided on the leg part 106, the body part 107 of the front body Fo, and the body part 108 of the back body Bo in a plane manner. Fastening tapes To for fastening are provided on both ends of the waist portion 108 of the rear body Bo. In this way, the elastic expansion / contraction members 106G, 107G, 1
A pleated flat gather is formed at the portion where the 08G is provided, and the flat gather allows the diaper body 105 to be tightly attached around the wearer's legs and torso, and is held on the waist by the fastening tape To. The elastic expansion / contraction member 106G forms a leg opening (leg hole) 109 as shown in FIG.

As described above, in the conventional disposable diaper, liquid leakage is prevented by bringing the three-dimensional gathers and the flat gathers formed by the elastic members into contact with the skin of the wearer. By the way, since a fine uneven surface is formed on the surface of such a three-dimensional gather or a flat gather by the elastic force of the elastic stretchable member, in order to reliably prevent liquid leakage, this gather surface is worn on the wearer's skin. It is necessary to make strong contact with.

However, if this tightening force is too strong, especially in infants and the like with weak skin, tightening marks and swelling will occur in this part, and if too weak, it will cause liquid leakage, so the elastic stretchable member. It was quite difficult to set the expansion and contraction force of.

Further, if a three-dimensional gather, a flat gather, or the like is formed by using the elastic stretchable member as described above, there is a problem that the material cost and the manufacturing cost for this are added and the cost of the entire diaper increases. there were.

[0008]

SUMMARY OF THE INVENTION It is an object of the present invention to provide an inexpensive disposable paper diaper which eliminates the above-mentioned drawbacks of conventional disposable paper diapers and can reliably prevent liquid leakage. .

[0009]

The above object of the present invention is to provide a liquid-permeable topsheet that covers the front surface side, a liquid-impermeable backsheet that covers the back surface side, and an absorber interposed between the sheets. A disposable paper diaper having a paper diaper body having liquid leakage prevention barriers provided on the surfaces of the top sheet on both sides in the longitudinal direction of the absorbent body, the surface of which is peeled off on the liquid leakage prevention barrier The disposable diaper is characterized in that an adhesive layer coated with paper is provided, and the main body of the diaper is attached to the body via the adhesive layer for use.

The above object of the present invention can be achieved more effectively by providing the liquid leakage barrier over the outer circumference of the absorber.

The above object of the present invention can be more effectively achieved by providing a recess for faeces in the center of the absorbent body.

Furthermore, the above object of the present invention can be achieved more effectively by providing a waterproof sheet on the outer periphery of the toilet bowl recess.

[0013]

DETAILED DESCRIPTION OF THE INVENTION The contents of the present invention will be described below in detail with reference to the accompanying drawings showing an embodiment of the present invention.

FIG. 1 is a plan view showing the main body 10A of a disposable diaper which forms a disposable disposable diaper 10 according to the present invention as seen from the front side, and FIG. 2 is a sectional perspective view taken along the line A--A of FIG.
FIG. 3 shows a paper diaper 1 in which the main body 10A of the paper diaper is assembled.
It is a perspective view which shows the state set to 0, ie, the form at the time of use.

As shown in the figure, the main body of the disposable diaper 10A
Is a diaper main body 10A composed of a liquid-permeable top sheet 11, a liquid-impermeable back sheet 12, and an absorber 13 interposed between these sheets, and has a pseudo hourglass shape in plan view, and the contour of this shape is formed. The three-dimensional leak preventive wall 14 which is a barrier for preventing liquid leakage is provided along the parts, that is, the leg parts 17, the torso part 18 on the front body F side, and the torso part 19 on the back body B side. A recess 15 for storing feces having a similar shape to the leak preventive wall 14 is provided at a substantially central portion.

The liquid-permeable top sheet 11 is made of a woven fabric, a nonwoven fabric, a porous film or the like which allows body fluids such as urine to permeate the absorbent body 13 and which is soft to the touch.

On the other hand, the liquid-impermeable back sheet 12 has a property of not allowing the body fluid absorbed by the absorber to permeate to the outside.
A non-woven fabric, a waterproof film, or a composite material thereof having a good feel is used. It should be noted that the entire area of the liquid-impermeable back sheet 12 is shown in FIG.
A pattern 12b such as an animal or a character is designed in an appropriate color on the ground pattern 12a as shown in FIG.

Further, the absorbent body 13 is a combination of a high-molecular polymer mainly composed of defibrated pulp, a thermoplastic resin,
Alternatively, cellulose fiber or the like is used. This absorber 1
3, is covered with crepe paper 16 as shown in FIG.

Next, the leak preventive wall 14 is composed of a base 14a, an adhesive layer 14b coated on the upper surface of the base 14a, and a release paper 14c provided on the upper surface of the adhesive layer 14b. There is.

The substrate 14a is made of a non-woven fabric having a waterproof property and a cushioning property, or a material such as a waterproof film.
It is formed in a long strip shape with a width and a height of about several mm to several dozen mm. As shown in FIG. 2, the bottom portion of the base 14a is welded to the folded end surface 12a of the back sheet 12 folded back along the contour of the main body 10A of the diaper with a hot melt adhesive or the like.

The pressure-sensitive adhesive forming the pressure-sensitive adhesive layer 14b has a suitable adhesiveness to the skin as described in, for example, JP 2001-181591 A or JP 2001-192631 A. An adhesive that has cohesiveness and is used for medical adhesive tapes and the like and that is kind to the skin and has a high adhesive strength is used. A known release paper 14c having a coating film of silicone or the like is provided on the upper surface of the pressure-sensitive adhesive layer 14b in a peelable manner. A cut 14c 'is formed in a part of the release paper 14c, and is peeled off from the cut 14c' when the main body 10A of the paper diaper is used as the paper diaper 10.

As shown in FIG. 2, the toilet bowl recess 15 has a curved inner surface protruding toward the back surface. The depth, the planar shape, etc. of the concave portion 15 are set in an appropriate range depending on the application, purpose, etc.

The main body 10 of the diaper constructed as described above.
When A is used as the disposable diaper 10, first, the release paper 14c of the main body 10A of the disposable diaper is peeled off from the adhesive layer 14b. Next, the longitudinal center of the paper diaper body 10A is brought into contact with the crotch of the wearer, and the entire adhesive layer 14b is pressed against the skin of the wearer to fold in the front-rear direction to form the front body F and the back body B. Form. At this time, the leg openings 20 are formed by the leg surrounding portions 17. In this way the disposable diaper body 1
By attaching 0A to the wearer's body, the paper diaper 10 as shown in FIG. 3 is completed.

As described above, the present paper diaper 10 is a paper diaper that does not require any member used in conventional paper diapers such as elastic stretchable members, three-dimensional gathers or flat gathers formed by these members, or fastening tapes. Since the structure is extremely simple, it can be manufactured at low cost.

Further, since the leak preventive wall 14 can be worn only by sticking it on the body, it is possible to change clothes easily and in a short time.

Furthermore, when worn, the surface of the leakproof wall 14, that is, the adhesive layer 14b, is brought into close contact with the skin of the wearer, and the inside of the leakproof wall 14 is completely shut off. For example, it is possible to reliably prevent body fluid such as urine from leaking from the crotch portion to the outside.

The content of the present invention has been described above based on the embodiment, but the present invention is not limited to such an embodiment, and the constitution can be changed as follows.

FIG. 4 shows a disposable diaper body 10 'constituting a disposable diaper 10' (not shown) according to another embodiment of the present invention.
FIG. 3A is a cross-sectional view of the upper half of FIG. Note that, in FIG. 4, constituent elements corresponding to the constituent elements of the disposable diaper main body 10A shown in FIG.

As shown in the figure, the main body of the disposable diaper 10'A
In addition, the outer shape of the main body itself is rectangular, and the plane shape of the toilet bowl recess 15 'is formed in an elliptical shape, and the liquid permeable topsheet 11' surrounding the elliptical recess 15 'is formed. A waterproof sheet 21 'made of the same material as the liquid-impermeable back sheet 12' and made of a waterproof film or the like having a width of about 5 mm to 10 mm is welded to the position.

As described above, since the main body of the present paper diaper 10'A is provided with the double leak preventive wall, the main body of the main body of diaper 1
If the paper diaper 10 ′ is formed of 0′A, first, the waterproof sheet 21 ′ can prevent the body fluid stored in the recess 15 ′ from leaking out from the recess 15 ′.
Even if the waterproof sheet 21 'gets over and leaks, the leakproof wall 14' provided on the outer side can prevent the leak from the crotch portion.

Although all the above-mentioned paper diapers are provided with a recess for a toilet bowl, the present invention can be applied to a paper diaper having no such toilet bowl.

FIG. 5 is a plan view of a disposable diaper main body 10 "A forming a disposable diaper 10" (not shown) according to still another embodiment of the present invention, which is developed and viewed from the front side according to FIG. Is. Note that, in FIG. 4, constituent elements corresponding to the constituent elements of the main body 10A of the diaper shown in FIG.

The main body 10 "A of the disposable diaper comprises a liquid-permeable top sheet 11", a liquid-impermeable back sheet 12 ", and an absorbent body 13" interposed between these sheets. Is a pseudo hourglass shape in a plan view, and liquid leakage substantially the same as that of the leak preventive wall 14 described above in a direction straddling the front body F ″ and the back body B ″ inside each of the leg portions 17 ″ and 17 ″. A leak-proof wall 14 ″ of a barrier for prevention is provided. The fastening tape (female material) T "and the fastening tape (male material) are provided at both ends of the waist portion 18" on the front body F "side and both ends of the waist portion 19" on the back body B "side, respectively. ) T ″ is provided, these fastening tapes are not always necessary, for example, when the main body 10 ″ A of the present diaper is used in combination with pants.

Main body 1 of the diaper constructed as described above
When 0 "A is used as a disposable diaper 10" (not shown), the release paper (not shown) of the leakproof wall 14 "is peeled off from the adhesive layer (not shown) in the same manner as described above, and the main body of the disposable diaper is removed. Abutting the longitudinal center of 10 "A to the wearer's crotch,
While pressing the adhesive layer against the wearer's skin, the front body F "and the back body B" are formed by folding in the front-back direction. After the main body of the disposable diaper 10 "A is attached to the wearer's body in this manner, the fastening tape (female material) T" and the fastening tape (male material) T "are fastened to complete the wearing of the disposable diaper 10". To do.

Main body 1 of the diaper constructed as described above
When the disposable diaper 10 "is formed of 0" A, it does not have a toilet bowl, but it can prevent liquid leakage in the same manner as described above, and since the configuration is extremely simple, the manufacturing cost can be further reduced. .

[0036]

As described above in detail, according to the paper diaper of the present invention, since the body of the paper diaper is directly worn on the skin, liquid leakage can be surely prevented, and elastic expansion / contraction is possible. Since members and the like are unnecessary, it can be manufactured at low cost.

In particular, according to the paper diaper provided with the waterproof sheet around the toilet bowl portion, the liquid leakage can be more surely prevented.

[Brief description of drawings]

FIG. 1 is a plan view of a developed paper diaper body according to an embodiment of the present invention as viewed from the front side.

FIG. 2 is a cross-sectional perspective view taken along the line AA of FIG.

FIG. 3 is a perspective view of a paper diaper formed by the paper diaper body shown in FIG.

FIG. 4 is a cross-sectional perspective view of a disposable diaper body according to another embodiment of the present invention.

FIG. 5 is a plan view of a disposable diaper main body according to yet another embodiment of the present invention, as viewed from the front side.

FIG. 6 is a plan view of a conventional paper diaper developed and viewed from the front side.

FIG. 7 is a perspective view of the disposable diaper assembly shown in FIG. 6;

[Explanation of symbols]

10 (10 ') (10 ") Paper diaper 10A, 10A', 10A" (according to the present invention) Paper diaper body 11, 11 ', 11 "Liquid permeable top sheet 12, 12', 12" Liquid impermeable back sheet 13, 13 ', 13 "Absorber 14, 14', 14" Leakage prevention wall 14a, 14'a Base 14b, 14'b Adhesive layer 14c, 14'c Release paper 15, 15 '(for toilet bowl) Recess 16,16 'Crepe paper 17,17 "Leg circumference 18,18" (front body side) Waist circumference 19,19 "(rear body side) Waist circumference 20 Leg opening 21' Waterproof sheet 100 (conventional) disposable diaper 104 three-dimensional gather 104G, 106G to 108G elastic stretchable members B, B ", Bo back body F, F", Fo front body

Claims (4)

[Claims] 1. A liquid-permeable top sheet that covers a front surface side, a liquid-impermeable back sheet that covers a back surface side, an absorber interposed between the sheets, and the tops on both sides in the longitudinal direction of the absorber. A disposable paper diaper having a paper diaper body having a liquid leakage prevention barrier provided on the surface of a sheet, wherein an adhesive layer having a surface coated with release paper is provided on the liquid leakage prevention barrier, A disposable paper diaper, characterized in that the main body of the paper diaper is attached to the body via an adhesive layer for use. 2. The disposable diaper according to claim 1, wherein the liquid leakage barrier is provided over the outer circumference of the absorber. 3. The disposable paper diaper according to claim 1, wherein a concave portion for storing a toilet is provided in a central portion of the absorbent body. 4. The disposable paper diaper according to claim 3, wherein a waterproof sheet is provided on the outer periphery of the toilet bowl recess.