JPH07116192A - Inner wing type disposable diaper - Google Patents

Abstract

PURPOSE:To provide a diaper wherein wing parts are formed by wing sheet adhered to rear face material of the back area of the main body and extending laterally from the left and right side parts, for enabling to omit the cutting of the rear face member and to avoid the waste of material. CONSTITUTION:A wing part 5 is adhered to left and right side parts of a rear face material 3 of back area 7 of a main body of diaper 1 and comprising a wing sheet 6 extending laterally H from left and right side parts. The Young's modulus and the tensile strength thereof is above those of rear face material 3. With regard to the shape and size, the vertical width a of an adhered area 10 of the rear face material of back 7 area is larger than the vertical width b of an outer end 11 and the vertical width b of the outer end 11 is 35 to 80mm. Further, at least 1/3 of a lower profile 12 is a hollow line curved toward an upper profile 13 and formed such that a line connecting 2 optional points on the lower profile 12 does not cross the lower profile 12. Further, there is provided an adhesive tape 14 to set the left and right wings 5 with each other and an adhesive tape 15 to set an abdomen area 9 at the outside of the wing 5 in the abdomen area 9.

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 an inner-blade type disposable diaper which is excellent in ease of mounting, fit and economy.

[0002]

2. Description of the Related Art As is well known, disposable diapers are used for receiving excrements of infants, the elderly, patients and the like. Various types of disposable diapers have been proposed and used,
In recent years, pants-type shoes have come to be widely used because of their wearability and performance.

As the pants-type disposable diaper, an outer blade type disposable diaper and an inner blade type disposable diaper are known. In the outer-blade disposable diaper, as shown in FIG. 6, the wings 5 extending laterally from the left and right sides of the back material in the back area are attached to the fastening material 22 such as an adhesive tape.
The inner-blade type disposable diaper, on the other hand, is fixed to the outside of the abdomen region 9 by means of the blades extending laterally from the left and right sides of the back material 3 in the back region 7, as shown in FIG. After the part 5 is wrapped around the waist, it is fixed with a fastening material 24 such as an adhesive tape, and then, as shown in FIG. 5, the abdominal region 9 is placed on the wing 5 wound around the waist. Overlay
By fixing with the fastening material 25, the blade portion 5 is mounted so as to be located inside the abdominal region 9.

By the way, comparing the ease of mounting the outer-blade type disposable diaper and the inner-blade type disposable diaper, in the outer-blade type disposable diaper, the fixing of the disposable diaper to the waist is stopped by the left and right wings. The inner-blade type disposable diaper, which is completed only after the dressing is stopped, is the inner-blade type disposable diaper, in which the feather portion is temporarily fixed to the waist and then the disposable diaper is fixed. Is easier to wear than the outer-blade disposable diaper, and the inner-blade disposable diaper is
It has advantages such as easy centering of the disposable diaper, wearing while standing, and easy replacement of the urine pad.

As described above, since the inner-blade type disposable diaper has various advantages, many technical means have been proposed in connection with this, for example, in Japanese Patent Laid-Open No. 1-97201. An inner-blade disposable diaper that is fastened with an elastic stretchable band is disclosed.
9, JP-A-3-60956, JP-A-3-397211, JP-A-3-94217 discloses that the fastening material is an adhesive tape, and according to JP-A-3-136652, a pelpet fastening material. The inner wing type disposable diaper using the inner wing type is disclosed in JP-A-3-107914, and the inner wing type disposable diaper in which a waist gather is attached to the end of the abdominal region is disclosed in JP-A-3-123550. What is formed of the material is disclosed.

[0006]

According to the above-mentioned conventional technique, the inner-blade type disposable diaper has various advantages, but has the following four major drawbacks. That is, first, since the inner blade type disposable diaper has a larger lateral width than the outer blade type disposable diaper, the back material is cut into the shape of the blade portion and the blade portion is formed as an extension of the back material. In that case, there is a large waste of material.

Secondly, the blade portion of the inner-blade type disposable diaper has a function of fixing the waist and the abdominal region of the main body of the disposable diaper. Since stress is applied, a part of the blade portion may float, twist, or the fastening material may come off depending on the shape of the blade portion.

Thirdly, when the inner-blade type disposable diaper is worn, since the blade portion is located between the abdominal region of the diaper body and the skin, the wing portion shields the absorber in the abdominal region of the disposable diaper body. This will impair its absorption function.

Fourthly, in the inner-blade type disposable diaper, the size around the waist is adjusted by the size of the overlap of the tips of the left and right wings, and the size around the legs is wound around the abdominal region and waist of the disposable diaper. The wear is performed by adjusting the size of the overlap with the worn wing portion, but depending on the wearer's body type, an appropriate overlap may not be obtained. It was not possible to wear a winged disposable diaper.

[0010]

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to solve the problems of the above-mentioned conventional techniques, and it is easy to mount the same, and the fitting and economy are improved. It is to provide an excellent inner blade type disposable diaper.

[0011]

In order to achieve the above object, the present invention has the following technical means. That is, to explain with reference to the reference numerals used in the accompanying drawings corresponding to the embodiments, the absorber 4 is provided between the liquid-permeable front material 2 and the liquid-impermeable back material 3.
A disposable diaper body 1 comprising a back region 7, a crotch region 8 and an abdominal region 9 interposed between the waist region and a waistline extending in the lateral direction H from the left and right side portions of the back material 3 of the back region 7 of the disposable diaper body 1. In an inner-blade type disposable diaper composed of a wearing feather portion 5, the feather portion 5 is attached to the left and right side portions of the back material 3 in the back region 7 of the disposable diaper body 1, and the left and right side portions thereof are attached. From the back sheet 3, the Young's modulus and the tensile strength of the blade sheet 6 forming the blade portion 5 are larger than those of the back material 3, and the shape and size of the blade sheet 6 are The vertical width a of the pasting area 10 of the back material 3 is wider than the vertical width b of the outer end 11,
The vertical width b of the outer end 11 is 35 to 80 mm, and at least 1/3 on the lower contour line 12 is a concave curve curved toward the upper contour line 13, and the lower contour line 12
A first adhesive tape that is formed so that a straight line connecting any two points above does not intersect with the lower contour line 12 and that the left and right blade portions 5 are fixed to each other on the blade sheet 6 forming the blade portion 5. A second adhesive tape 15 for fixing the abdominal region 9 to the outer side 16 of the wing 5 wound around the waist is provided in the abdominal region 9 of the disposable diaper body 1. It is an inner blade type disposable diaper characterized by.

[0012]

The present invention comprises the above technical means, and the blade portion 5 in the inner-blade type disposable diaper is attached to the back surface material 3 of the back region 7 of the disposable diaper main body 1 and laterally from its left and right side portions. Since it is formed by the blade sheet 6 extending in the direction H, it is not necessary to cut out the back material 3 of the disposable diaper main body 1 for forming the blade portion 5, and the waste of material can be reduced.

Further, the adhesive tapes 14 and 15 which are fastening materials used when mounting the inner blade type disposable diaper are adhered to the blade portion 5, but the blades forming the blade portion 5 The sheet 6 is the back material 3 of the main body 1 of the disposable diaper.
Since it is made of a material having a Young's modulus and a tensile strength higher than that of the inner wing type disposable diaper, the adhesive tapes 14 and 15 used for mounting the inner blade type disposable diaper are less likely to be damaged and can be reattached. It is possible to correct mistakes in wearing, excretion of excrement, and to put on and take off the urine pad many times, and the wearability is improved. Furthermore, the inner-blade disposable diaper is improved. Since most of the tension due to the abdominal pressure at the time of wearing is shared by the blade sheet 6 forming the blade portion 5, the back surface material 3 of the disposable diaper body 1 is
It is possible to use inexpensive materials for the inner wing type disposable diaper at low cost.

The blade sheet 6 forming the blade portion 5 is formed.
According to the shape and size of the above, since the vertical width a of the pasting area 10 of the backing material 3 of the back area 7 is made wider than the vertical width b of the outer end 11, the buttocks can be widely covered, and the buttocks. It is possible to prevent excrement from leaking from the inside and to disperse the transmission of the abdominal pressure to the back material 3. Furthermore, the vertical width b of the outer end 11 is 35 to 80 mm. Since it is 35 mm or more, it is difficult to bite into the abdomen, and the abdomen is not excessively pressed, and proper tightening can be performed. On the other hand, since it is 80 mm or less, the absorbent body 4 in the abdominal region 9 of the disposable diaper main body 1 shielded by the blade portion 5 is small, so that its absorbing function is not hindered.

In addition, a blade sheet 6 forming the blade portion 5
Is a concave curve in which at least 1/3 on the lower contour line 12 is curved toward the upper contour line 13, and a straight line connecting any two points on the lower contour line 12 is the lower contour line 1.
Since it is formed so as not to intersect with 2, the wrinkle of the blade sheet 6 is prevented and the lower contour line portion is prevented from being lifted up. As a result, the fit of the blade portion 5 to the waist is improved, and the inner-blade type disposable diaper having more excellent wearability can be formed.

[0016]

Embodiments of the present invention will now be described in detail with reference to the accompanying drawings. As shown in FIG. 1, the inner-blade type disposable diaper of the present invention comprises a disposable diaper body 1 having an absorbent body 4 interposed between a liquid-permeable surface material 2 and a liquid-impermeable back material 3. The disposable diaper body 1 is composed of a wing portion 5 adhered to the body 1. The disposable diaper body 1 has a back region 7, a crotch region 8, and an abdominal region 9 depending on the regions facing the respective parts of the body when the body is worn. The blade portion 5 is formed by a blade sheet 6 that is attached to the back material 3 in the back region 7 of the disposable diaper body 1 and extends in the lateral direction H from the left and right side portions thereof. In addition, the first adhesive tape 14 for fixing the left and right blade portions 5 to each other is wound around the waist sheet 6 forming the blade portion 5 around the waist in the abdominal region 9 of the disposable diaper body 1. The abdominal region on the outer side 16 of the vane portion 5 The second pressure-sensitive tape 15 which fastening the can, in which are disposed respectively.

The above-mentioned disposable diaper body 1 will be described in more detail. The surface material 2 and the back surface material 3 constituting the disposable diaper body 1 are joined to each other at the side surface of the absorbent body 4.
The side surface material 23 is spliced to the side surface material 23, and the side surface material 23 has a tension elastic 2 inside the bag formed by folding back the inner side edge thereof.
4 is inserted and adhered to form a three-dimensional cather 18 standing up on the surface material 2 (FIG. 2), which plays a role of preventing lateral leakage of excrement.
The joining of the side surface material 23 and the back surface material 3 is performed by hot melt, heat fusion, ultrasonic welding, or the like.

The surface material 2 is made of a liquid-permeable material, and is made of a non-woven fabric or a perforated film which has flexibility and is soft to the touch. , Polyethylene, polypropylene, polyester, polyamide, rayon, polyacrylonitrile, etc., or a grammage 18 to 3 composed of a composite fiber of 1.5 to 6.0 denier.
It is preferably 0 g / m @ 2 and a thickness of about 200 to 400 .mu.
A polyethylene film having a thickness of 40 to 600 μ, which has a thickness of 0.6 mm and an opening ratio of 35% or more can be used.

The backing material 3 is made of a liquid impermeable material, and is made of a moisture-permeable or moisture-impermeable polyethylene film having a thickness of about 18 to 45 μm. Is composed of a water-repellent nonwoven fabric, an elastic film, or a laminate of a nonwoven fabric and a film, and the side surface material 23 has a basis weight of 18 to 25 g / m 2 and a thickness of 180 to 250 μm. It is made of a nonwoven fabric having air permeability and waterproof property, and particularly, a polypropylene spunbonded nonwoven fabric having flexibility and good feel to the skin is preferable.

The absorbent body 4 interposed between the surface material 2 and the back surface material 3 is composed of cotton-like pulp, superabsorbent polymer and tissue paper, and excreted matter, especially urine. The cotton-like pulp has a basis weight of 100 to 1000 g / m.
2 using a web of wood pulp or peat moss,
Those using pagas, kenaf, synthetic pulp, etc. can be used, and the super absorbent polymer has an average particle size of 100 to 100.
600 μ, physiological saline absorption rate 30-80 g / g cross-linked polyacrylic acid or its salt, or starch / acrylate / graft copolymer can be used, and in some cases, fibrous high water absorption A polymer may be used, and when the fibrous superabsorbent polymer is used, it may be mixed with cotton-like pulp or may be distributed in layers between the webs of cotton-like pulp. It is also possible to use.

The tissue paper is used to wrap and reinforce the cotton-like pulp and the super absorbent polymer and to enhance the liquid diffusibility of the absorbent body 4, and the basis weight is 12 It is preferably about 30 g / m @ 2, but it is not always necessary to use it if the cotton pulp web has sufficient strength.

In order to increase the strength of the cotton-like pulp web, compression or embossing of the cotton-like pulp web, or addition of a resin binder or heat-adhesive fiber may be considered. Therefore, a cotton-like pulp web having high strength subjected to these treatments is also suitable as the absorbent body 4 of the inner blade type disposable diaper of the present invention, and other usable materials include sponge-like ones. Foams, hydrophilic synthetic fiber webs and the like are considered.

Further, the size of the main body 1 of the disposable diaper is such that when used as an adult diaper, the longitudinal direction V
The length of 600 to 990 mm, the length of the horizontal direction H is 350
It is preferable that the width of the crotch region 8 in the lateral direction H is narrower than that of the back region 7 and the abdominal region 9 as a shape of the violin type. However, it may be a simple rectangle.

Then, in the flap at the end in the longitudinal direction V of the back region 7 of the disposable diaper body 1, natural rubber,
An elastic material made of an elastic material such as polyurethane foam or a ribbon-shaped polyurethane film is adhered in a tensioned state to form a back waist gather 19, and the crotch region 8 has left and right side portions along the periphery thereof. By inserting and adhering the elastic under tension, a leg gather 17 having a curved shape is formed (FIG. 3), and further, in the flap at the end of the abdominal region 9 in the longitudinal direction V, the back region is formed. An abdominal waist gather 20 similar to the V-terminal in the vertical direction of 7 is formed, which enhances the fit when the disposable diaper body 1 is worn around the waist and at the same time prevents lateral leakage of excrement. It is a thing.

In this embodiment, the leg gathers 17 formed in the crotch region 8 have a curved shape. However, the leg gathers 17 do not necessarily have to be curved and may be formed linearly in the vertical direction V. It is something that can be accepted.

The blade sheet 6 forming the blade portion 5 is formed.
More specifically, the feather sheet 6 is attached to the left and right side portions of the back material 3 in the back area 7 of the disposable diaper body 1 and extends in the lateral direction H from the left and right side portions. The vane sheet 6 is formed using a material having a Young's modulus and tensile strength superior to those of the material forming the back surface material 3 of the disposable diaper body 1, and the shape thereof is The vertical width a of the sticking areas 10 on the right and left sides of the back material 3 of the back area 7 of the blade sheet 6 is wider than the vertical width b of the outer end 11, and the lower contour line of the blade sheet 6 is At least one-third of 12 is composed of a concave curve curved toward the upper contour line 13, and a straight line connecting any two points of the lower contour line 12 does not intersect with the lower curve line 12. There is something. More preferably, the entire lower contour line forms a concave curve.

The blade sheet 6 forming the blade portion 5
It is preferable that each of the left and right sides of the
Further, the attachment area 10 of the back area 7 of the blade sheet 6 to the back surface material 3 is formed into a substantially rectangular shape, and the outer end 11 of the blade sheet 6 is used to temporarily fix the disposable diaper body 1 around the waist. The first adhesive tape 14 is provided, and the first adhesive tape 14 is provided on either or both of the left and right blade sheets 6, and is further temporarily fixed to the disposable diaper. The second adhesive tape 15 for mounting and fixing the main body 1 is arranged on the left and right ends of the abdomen region 9 of the main body 1 of the disposable diaper.

Then, the blade sheet 6 is formed as described above,
By making the vertical width a of the sticking region 10 of the blade sheet 6 wider than the vertical width b of the outer end 11, the buttocks can be covered over a wide range, and the outer side 1 of the blade sheet 6 can be covered.
The fixing area of the second adhesive tape 15 fixed to 6 is widened, and the abdominal area 9 of the disposable diaper body 1 and the feather sheet 6 are expanded.
It is possible to easily adjust the overlap with the blade sheet 6 and to improve the wearing property, and further, at least one-third of the lower contour line 12 of the vane sheet 6 has a concave shape curved toward the upper contour line 13. Curve (curvature radius 200-70
0 mm is preferable), so that stress concentration due to abdominal pressure and exercise is unlikely to occur in the blade sheet 6, and the tension when the blade sheet 6 is wrapped around the waist is used as the back material of the disposable diaper body 1. Since it can be evenly transmitted to the attachment area 10 of No. 3, the fitting property is good and the lower contour line 12 of the blade sheet 6 can be prevented from being turned up.

The blade sheet 6 forming the blade portion 5
The vertical width b of the outer end 11 is 35 to 8
By setting the ratio of the length b of the outer end 11 to the length a of the attachment area 10 to 0.15 to 0.35, the blade sheet 6 is unlikely to bite into the abdomen. At the same time, it is possible to prevent excessive pressure on the abdomen, and since the left and right vane sheets 6 are appropriately overlapped and can be appropriately tightened, the wearability is good and the fit is also good. ,further,
Since the absorbent body 4 in the abdominal region 9 of the disposable diaper body 1 shielded by the blade sheet 6 forming the blade portion 5 is small, the absorption function is not impaired, and the diaper is not displaced or the buttocks. The leakage of excrement from the body is less likely to occur.

The lateral width c of the left and right blade sheets 6 is
The ratio of the sum of the lengths (2c) and the maximum lateral width w of the disposable diaper body 1 is set to 0.65 to 1.0.
Of the maximum vertical width (the vertical width a of the pasting area 10) to the maximum vertical width d of the disposable diaper body 1 is 2.8 to 3.5.
According to the above, a proper overlap can be obtained between the left and right wing sheets and between the wing sheets and the abdomen region 9, and an inner-blade disposable diaper having excellent wearability and fit can be formed.

The blade sheet 6 forming the blade portion 5
As the material constituting the, while having appropriate strength, elasticity, flexibility, adhesiveness and peelability of the adhesive tape,
Moreover, if the sheet has a good feel,
Although not limited thereto, a laminate of a plastic film and a non-woven fabric is preferable, and in this case, the non-woven fabric side is the back region 7 of the disposable diaper body 1.
Since the non-woven fabric comes into contact with the skin when the feather sheet 6 is wrapped around the waist by sticking it to the back material 3 of the above, it does not feel uncomfortable and prevents stuffiness, while the above plastic film is used. Is located on the outer side 16, the adhesion and the peeling of the adhesive tape are facilitated, and the misalignment and the like when the inner-blade type disposable diaper is mounted can be easily corrected, so that better wearability can be obtained.

Further, the blade sheet 6 may be a non-woven fabric impregnated with a resin, and in this case as well, the adhesive tape can be easily adhered and peeled off, and therefore, the same good wearability as described above can be obtained. It is what is done.

By performing the peeling treatment on the entire outer side 16 of the blade sheet 6, the adhesive tape can be easily attached and detached, and good mountability can be obtained, and at the same time, an adhesive residue is left on the outer side 16 of the blade sheet 6. This is unlikely to occur, so that the wearability is significantly improved.

[0034]

As described above in detail, according to the present invention, the following effects can be obtained. That is, since the blade portion of the inner blade type disposable diaper of the present invention is formed by the blade sheet formed separately from the disposable diaper body, the blade portion is provided on the back surface material of the disposable diaper body for the blade portion. There is no need to cut out, waste of material can be eliminated, and since stress concentration due to abdominal pressure and movement on the blade sheet forming the blade portion is small, part of the blade portion rises from the skin, It is hard to twist and the adhesive tape does not come off, and it has good wearability and fitability.

Further, since it is easy to adjust the overlap between the left and right wing sheets and between the wing sheet and the abdominal region at the time of wearing the inner wing type disposable diaper, the inner wing type disposable diaper having better wearability and fit is provided. It is possible.

[Brief description of drawings]

FIG. 1 is a development view showing an inner-blade type disposable diaper of the present invention, in which the right half shows the front side and the left half shows the back side.

FIG. 2 is a sectional view taken along line X-X ′ in FIG.

3 is a cross-sectional view taken along the line Y-Y 'in FIG.

FIG. 4 is a diagram showing a method of mounting the inner-blade type disposable diaper, showing a state in which the main body of the disposable diaper is temporarily fixed.

FIG. 5 is a view showing a method of mounting the inner blade type disposable diaper, showing a state in which the mounting of the inner blade type disposable diaper is completed.

FIG. 6 is a view showing a mounted state of an outer blade type disposable diaper.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Disposable diaper main body 2 Surface material 3 Back material 4 Absorber 5 Blade part 6 Blade sheet 7 Back area 8 Inseam area 9 Abdominal area 10 Adhesion area 11 Outer end 12 Lower contour line 13 Upper contour line 14 First fastening tape 15 Second fastening tape 16 Outside of blade sheet

Claims (6)

[Claims] 1. A back region 7 and a crotch region 8 in which an absorber 4 is interposed between a liquid-permeable front material 2 and a liquid-impermeable back material 3.
And a disposable diaper body 1 composed of an abdominal region 9, and a waist portion 5 for wrapping around the waist which extends in the lateral direction H from the left and right side portions of the back material 3 of the back region 7 of the disposable diaper body 1. In the vane type disposable diaper, the vane portion 5 is attached to the left and right side portions of the back material 3 in the back region 7 of the disposable diaper body 1 and extends from the left and right side portions in the lateral direction H from the vane sheet 6. The Young's modulus and the tensile strength of the blade sheet 6 forming the blade portion 5 are larger than those of the backing material 3, and the shape and size of the blade sheet 6 are the longitudinal direction of the bonding area 10 of the backing material 3 in the back area 7. The width a is wider than the vertical width b of the outer end 11, and the vertical width b of the outer end 11 is 35.
~ 80 mm and at least 1 on the lower contour line 12
/ 3 is a concave curve curved toward the upper contour line 13, and is formed so that a straight line connecting any two points on the lower contour line 12 does not intersect with the lower contour line 12. A first adhesive tape 14 for fixing the left and right blades 5 to each other is attached to the blade sheet 6 formed on the abdomen region 9 of the disposable diaper body 1 on the outer side 16 of the blade 5 wound around the waist. Second adhesive tape 1 for fixing the abdominal region 9
An inner-blade disposable diaper, characterized in that 5 are provided respectively. 2. An outer side 1 of a blade sheet 6 forming the blade portion 5.
The ratio of the length of the vertical width b of 1 to the vertical width a of the pasting area 10 of the backing material 3 in the back area 7 is 0.15 to 0.35. Inner-blade disposable diaper. 3. The blade sheet 6 forming the blade portion 5 has a ratio of the sum (2c) of the lateral widths c of the left and right blade sheets 6 to the maximum lateral width w of the main body of the disposable diaper of 0.65. 1.
0, the maximum vertical width of the blade sheet 6, that is, the ratio of the vertical width a of the attachment area 10 to the maximum vertical width d of the disposable diaper body is 2.8 to 3.5. The inner-blade type disposable diaper according to claim 1, wherein 4. The blade sheet 6 forming the blade portion 5 is made of a laminate material of a plastic film and a non-woven fabric, and the non-woven fabric side is adhered to the back surface material 3 of the back region 7. The inner-blade type disposable diaper according to claim 2 or claim 3. 5. The inner blade type disposable diaper according to claim 1, wherein the blade sheet 6 forming the blade portion 5 is a non-woven fabric impregnated with a resin. 6. An outer side 1 of a blade sheet 6 forming the blade portion 5.
6. The disposable diaper according to claim 1, claim 2 or claim 3, wherein the entire surface is subjected to a peeling treatment.