JP3942301B2 - Absorbent articles - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an absorbent article such as a disposable diaper that has excellent leakage prevention properties and is not stuffy.
[0002]
[Prior art and problems to be solved by the invention]
Since absorbent articles, such as a disposable diaper, may be stuffy at the time of wear, what can prevent stuffiness is proposed as a form which does not arrange a leak-proof sheet in a leg part.
However, the conventionally proposed absorbent article that prevents stuffiness has a problem that the ability to prevent leakage from the leg portion becomes insufficient. In addition, there is a problem in that the feeling of use is deteriorated due to the moisture constituting the leg portion sucking moisture.
[0003]
Accordingly, an object of the present invention is to provide an absorbent article such as a disposable diaper that is prevented from being stuffy when worn, is excellent in preventing leakage from the leg portion, and has a good feeling in use.
[0004]
[Means for Solving the Problems]
The present invention is liquid-permeable topsheet, a liquid impermeable barrier sheet, and comprises a liquid retentive absorbent body, outward from the right and left sides of the absorbent body, leg of a wearer In the absorbent article, a pair of three-dimensional guards provided with a three-dimensional guard elastic member are formed inwardly of the left and right side edges of the leg portions. The guard is composed of a hydrophobic sheet material and the three-dimensional guard elastic member, and the base end of the three-dimensional guard is formed so as to be located inward of the absorbent article with respect to the side edge of the absorber, hydrophobic sheet materials, from the proximal end of the three-dimensional guard, than the side edges of the absorbent body and extends outward of the absorbent article, said leg portion, said hydrophobic which extends sheet material and the back surface of the laminated hydrophilic side sheet of the sheet material From the skin contact surface side is formed as and non-skin-contacting side with a hydrophobic becomes hydrophilic, the surface of the barrier sheet, the outer-layer nonwoven fabric are arranged, the hydrophilic sheet However, the object is achieved by providing an absorbent article formed from the outer nonwoven fabric that extends outward from the side edge of the absorbent body toward the outside of the absorbent article.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
It will be described in detail a preferred embodiment of an absorbent article of the present invention. Prior to describing one embodiment of the present invention, first, a first reference embodiment of the present invention will be described. Compared with the present invention, the first reference embodiment mainly does not include an “outer layer nonwoven fabric”, and the hydrophilic sheet on the non-skin contact surface side of the leg portion is not an outer layer nonwoven fabric but a surface sheet. It is different in that it is formed. After describing the first reference embodiment, an embodiment of the present invention will be described focusing on differences from the first reference embodiment.
As shown in FIGS. 1 and 2, a disposable diaper 1 as an absorbent article according to the first reference embodiment includes a liquid-permeable surface sheet 2, a liquid-impermeable leak-proof sheet 3, and a liquid-retaining absorbent body. 4 comprises a, outward from the right and left sides of the absorbent body 4, and a pair of right and left leg portions 7 is formed to abut the leg of a wearer, than the left and right side edges of the leg 7 A pair of three-dimensional guards 6 provided with three-dimensional guard elastic members 64 are formed inward.
The disposable diaper 1 of the first reference embodiment is a so-called unfolded disposable diaper in which fastening tapes 11 that are worn on the right and left side edges B1, B2 of the back side B are arranged. And the waist elastic member 81 and the leg elastic member 71 are distribute | arranged to the waist part 8 and the leg part 7 which are located around a wearer's waist at the time of use, respectively, and the waist gathers and a leg gather are formed. Further, the three-dimensional guard elastic member 64 is disposed at the free end 63 of the three-dimensional guard 6.
Such a configuration is the same as a conventional unfolded disposable diaper.
[0006]
Thus, in the disposable diaper 1 according to the first reference embodiment, the three-dimensional guard 6 includes the hydrophobic sheet material 61 and the three-dimensional guard elastic member 64, and the base end 60 of the three-dimensional guard 6 is the absorber 4. It forms so that it may be located in the diaper inner side rather than the side edge 4a . The sheet material 61 forming the three-dimensional guard 6 is extended from the base end 60 toward the outer side of the diaper than the side edge 4a of the absorber 4, and the leg portion 7 is an extended sheet. from wood 61 and stacked on the back surface of the sheet material 61 hydrophilic sheet 9 Prefecture, skin contact surface 7a side and non-skin contact surface 7b side with a hydrophobic it is formed so as to be hydrophilic.
[0007]
More specifically, the hydrophilic sheet 9 is formed from the top sheet 2 that extends toward the outside of the diaper 1 from the side edge 4a of the absorbent body 4, and the leg elastic member 71 is a top sheet. 2 and the sheet material 61 are nipped and fixed.
The leak-proof sheet 3 is arranged so that the left and right side edges 3a in the longitudinal direction are positioned on the left and right side edges on the surface side of the absorbent body 4 so as to cover the left and right side edges 4a of the absorbent body 4.
[0008]
The three-dimensional guard 6 is provided over the entire longitudinal direction on the absorber 4. In the portion where the absorbent body 4 does not exist, that is, in the waist portion 8 of the stomach side A and the back side B of the diaper, the entire surface of the sheet material 61 is fixed to the topsheet 2.
The absorbent body 4 includes a main body 41 formed by mixing an absorbent polymer with pulp, and a diffusion sheet 42 disposed on the upper surface of the main body 41.
[0009]
The side edge 3a of the leak-proof sheet 3 is more preferably located on the inner side of the disposable diaper than the base end 60. In this case, the side edge 3a is narrow between the side edge of the topsheet 2 and the absorbent body 4. It is held. The distance T ₁ between the side edge 3a of the leak-proof sheet 3 and the side edge 4a of the absorber 4 is not particularly specified, and the distance T ₂ between the side edge 3a of the leak-proof sheet 3 and the base end 60 is 0 to 20 mm is preferable.
Moreover, it is desirable that the leak-proof sheet 3 has a rectangular shape, and the end edges in the longitudinal direction extend outward from the end edges in the longitudinal direction of the absorbent body 4. The surface sheet 2 is extended from the longitudinal end edges of the absorbent core 4 to the diaper outwardly to form a waist portion 8 is laminated with the barrier sheet 3. For this reason, the waist elastic member 81 is nipped and fixed between the leak-proof sheet 3 and the top sheet 2.
[0010]
The base end 60 is formed by fixing the sheet material 61 to the top sheet 2.
In FIG. 2, for clarity the proximal end 60, for convenience, the sheet material 61 only at the proximal end 60 is described as being adhered to the surface sheet 2, the sheet material 61, group in outward from the edge 60, the entire surface is preferable to affixed to the topsheet 2 and the leak-barrier sheet 3.
In addition, the position and distance in the above-mentioned description are respectively the position and distance when the disposable diaper is viewed in plan.
[0011]
Next, the formation material of each structural member of the disposable diaper of 1st reference embodiment is demonstrated.
As the leak-proof sheet 3, the absorbent body 4, the outer layer nonwoven fabric 5 and the fastening tape 11, which will be described later , those normally used for disposable diapers can be used without particular limitation. In particular, the leak-proof sheet has an opaque region having a total light transmittance of less than 50% and a transparent region having a total light transmittance of 50% or more formed on a moisture-permeable sheet, and has a moisture permeability of 0.8 to 4 g / It may be 100 cm ² · h, and the area of the transparent region may be 5 to 30%.
[0012]
The sheet material 61 and the top sheet 2 each preferably have a CD strength of 1000 cN / 50 mm or more, more preferably 1200 to 2000 cN / 50 mm. By setting the CD strength to 1000 cN / 50 mm or more, the fastening tape is prevented from being removed from the root.
Here, the CD intensity is measured as follows.
<CD strength>
A test piece having a width of 25 mm in the flow direction (MD) of the original fabric and a length of 150 mm in the direction (CD) perpendicular to the flow direction was cut out. The test piece was subjected to a tensile test using a Tensilon tensile tester (manufactured by Orientec Co., Ltd.) with a chuck distance of 50 mm and a CD direction tensile speed of 300 mm / min, and the strength at break was measured.
[0013]
The water pressure resistance of the sheet material 61 is preferably 30 mm or more, and more preferably 50 mm or more. By setting the water pressure resistance to 30 mm or more, excrement that exceeds the three-dimensional guard should not bleed and leak.
[0014]
As the material satisfying such conditions, the sheet material 61 includes spunbond, spunbond-meltblown-spunbond (SMS), spunbond-meltblown-meltblown-spunbond (SMMS), heat roll nonwoven fabric, air-through. A hydrophobic non-woven fabric such as a non-woven fabric is preferably used. As the top sheet 2, a hydrophilic non-woven fabric such as air-through or cotton is preferably used.
In short, in the present invention, it is preferable to form the leg portion only with a breathable material.
Moreover, it is preferable that the basic weight of the said sheet material 61 and the said surface sheet 2 is respectively 10-60 g / m < ² >, and it is still more preferable that it is 15-40 g / m < ² >. By setting the basis weight to 10 g / m ² or more, the necessary water pressure resistance and CD strength can be expressed. By setting the basis weight to 60 g / m ² or less, it is advantageous in terms of cost.
Here, the water pressure resistance is measured as follows.
Water pressure resistance: according to JIS-L1092.
[0015]
Moreover, the main body 41 in the said absorber 4 uses what mixed a water absorbing polymer with normal pulp. As the water-absorbing polymer used in this case, the water-absorbing polymers described in paragraphs [0010], [0011], [0012] and [0013] of JP-A No. 10-118117, and the paragraph number [ [0015] The water-absorbing polymers described in [0015] [0016] and [0037] are preferably mentioned, and these may be used in combination in order to further improve the leakage prevention property. When these are used in combination, the blending ratio described in paragraph [0019] of the same publication may be used.
In addition, if the absorbent body has a level that does not impair the absorption performance, hydrophilic long fibers (rayon, cotton, polyvinyl alcohol fiber, wool, etc.) and thermoplastic fibers are used to stabilize the shape of the absorbent body. May be used in combination as appropriate.
[0016]
As the diffusion sheet 42, those normally used for disposable diapers can be used without particular limitation. Examples of particularly preferred diffusion sheets are paper and nonwoven fabric. In particular, when a nonwoven fabric is used, it is preferable that the constituent fibers have a fineness of 1.5 to 10 d and a basis weight of 15 to 60 g / m ² , but can be appropriately selected. Not only synthetic fiber but also a sheet mixed with rayon or cotton may be used.
[0017]
Since the disposable diaper 1 of the first reference embodiment does not have a leak-proof sheet in the leg portion, it is excellent in preventing stuffiness when worn, and since the base end of the three-dimensional guard is configured as described above, Excellent leakage prevention.
Further, the hydrophobic sheet material 61 is disposed on the skin contact surface side, the hydrophilic surface sheet 2 is disposed on the non-skin contact surface side, and the skin contact surface has a smooth feel, Moreover, since moisture is actively released to the non-skin contact surface side and released to the outside of the disposable diaper, the feeling of use is also good. This point becomes especially to significant when using nonwoven as the sheet material 61 and the surface sheet 2.
Moreover, in the disposable diaper of 1st reference embodiment, the usage-amount of a constituent material can be reduced rather than the conventional disposable diaper.
[0018]
If it is set as the above-mentioned structure, the disposable diaper 1 of 1st reference embodiment can be manufactured using the method used when manufacturing the conventional disposable diaper without a restriction | limiting in particular.
[0019]
Next, the disposable diaper of one Embodiment of the absorbent article of this invention is explained in full detail.
In addition, in the following description, a different point from the disposable diaper of 1st reference embodiment mentioned above is demonstrated especially. The points that are not specifically described are the same as those in the first reference embodiment described above, and the above description is applied as appropriate.
[0020]
In the disposable diaper 1 of an embodiment of the present invention, as shown in FIG. 3, on the surface of the barrier sheet 3, the outer layer nonwoven fabric 5 are disposed, hydrophilic sheet 9, the side of the absorbent body 4 It is formed from the outer-layer nonwoven fabric 5 extended toward the outer side of the diaper from the edge 4a.
The outer layer nonwoven fabric 5 has a rectangular shape, and the absorbent body 4 whose back side and side edges are covered with the leak-proof sheet 3 has a rectangular shape. Moreover, although the longitudinal direction side edge of the outer layer nonwoven fabric 5 is located in the substantially the same position as the side edge 4a of the absorber 4, the longitudinal direction edge of the outer layer nonwoven fabric 5 is respectively rather than the longitudinal direction edge of the absorber 4. It is extended toward the outside of the disposable diaper. The surface sheet 2 is extended from the longitudinal end edges of the absorbent core 4 to the diaper outwardly, it is laminated with an outer layer nonwoven fabric 5 to form a waist portion 8. For this reason, the waist elastic member 81 is nipped and fixed between the outer layer nonwoven fabric 5 and the top sheet 2.
Moreover, in this embodiment, the side edge 2a of the surface sheet 2 is distribute | arranged so that it may be located in the substantially the same position as the side edge 4a of the absorber 4. FIG.
[0021]
The outer layer nonwoven fabric 5 preferably has a CD strength of 1000 cN / 50 mm or more, and more preferably 1200 to 2000 cN / 50 mm. By setting the CD strength to 1000 cN / 50 mm or more, the fastening tape is prevented from being removed from the root.
[0022]
As the material satisfying such conditions, as the outer layer nonwoven fabric 5, spunbond, SMS, SMMS, heat roll nonwoven fabric, air-through nonwoven fabric and the like are preferably used.
Moreover, it is preferable that the basic weight of the said outer-layer nonwoven fabric 5 is 10-60 g / m < ² >, and it is still more preferable that it is 15-60 g / m < ² >. By setting the basis weight to 10 g / m ² or more, the necessary water pressure resistance and CD strength can be expressed . By making the basis weight 60 g / m ² or less, it is advantageous in terms of cost.
[0023]
Next, a second reference embodiment of the present invention will be described. The second reference embodiment is characterized in that “the absorber is provided with a water-repellent mount” and is mainly different from the first reference embodiment in that respect. In addition, the second reference embodiment does not include an “outer layer nonwoven fabric”, and the hydrophilic sheet on the non-skin contact surface side of the leg portion is not an outer layer nonwoven fabric, as in the first reference embodiment. Although it is not an embodiment of the present invention in that it is formed from a sheet, the above-described one embodiment is not described with respect to the above-mentioned characteristic portion “the point that the absorber includes a water-repellent mount” in the second reference embodiment. It can be applied to the embodiments of the present invention.
As shown in FIG. 4, the disposable diaper 1 of the second reference embodiment includes an absorbent body 4 including a water-repellent mount 44 and an absorbent main body 43. The absorbent main body 43 includes a main body 41 obtained by mixing an absorbent polymer with pulp, and a diffusion sheet 42 disposed on the upper surface of the main body 41.
The water repellent mount 44 has both left and right side edges 44a in the longitudinal direction wound upward on the back side of the absorbent main body 43 so as to cover the left and right side edges in the longitudinal direction of the absorbent main body 43 and to It is arranged to be located on the edge.
The water-repellent mount 44 has a Krem water absorption height of preferably 5 mm / 10 min or less, more preferably 0 mm / 10 min, and a moisture permeability of preferably 2 to 900 sec / (300 ml · 32 sheets), more preferably 30. a ~150sec / (300ml · 32 sheets), the basis weight preferably 14~60g / m ^2, more preferably 16~30g / m ^2, and most preferably 16~25g / m ^2.
[0024]
By setting the height of the clem to 5 mm / 10 min or less, it is possible to suppress bleeding from the absorbent body even in a state where no body pressure is applied.
By setting the moisture permeability to 2 sec / (300 ml · 23 sheets) or more and 900 sec / (300 ml · 23 sheets) or less, in the diaper production line, the transportability is improved and the productivity is improved.
When the basis weight is 14 g / m ² or more, the strength of the mount becomes sufficient, and there is no problem such as breakage due to processing or actual use of the product, and the texture deteriorates by forcibly increasing the strength. Does not occur. By setting it to 60 g / m ² or less, there is a sufficient merit in terms of cost, and a feeling of tingling does not occur.
[0025]
<Clem absorption height>
It measured according to JIS-P8141. That is, the water-repellent mount was cut into a strip shape having a width of 20 mm and a length of 200 mm, and then immersed in water from the lower end to 15 mm with the longitudinal direction being the vertical direction. It was measured how much water was sucked up 10 minutes after immersion in water or 1 hour later.
<Moisture permeability>
It measured according to JIS-P8117. That is, the water-repellent mount is cut into 70 × 70 mm, and 32 sheets are stacked, and 300 ml of air is transmitted using a moisture permeability measuring device (GURLEY DENSOMETER (trade name) manufactured by Kumagai Riki Kogyo Co., Ltd.). The time required for was measured.
[0026]
Further, the side edge 3a of the leak-proof sheet 3 is arranged so as to be located on the back side of the absorbent body 4 and so that the side edge 3a is not located outside the disposable diaper than the side edge 4a of the absorbent body 4. ing. In this embodiment, it arrange | positions so that it may become a substantially the same position as the side edge 4a of the absorber 4. FIG.
[0027]
The water repellent mount 44 has its side edge 44 a wound up above the diffusion sheet 42, and is sandwiched and fixed between the diffusion sheet 42 and the top sheet 2.
It is desirable that the side edge 44a of the water-repellent mount 44 is located inside the disposable diaper rather than the base end 60. The distance T ₁ between the side edge 44 a of the water repellent mount 44 and the side edge 43 a of the absorbent main body 43 is not particularly defined, but the distance T ₂ between the side edge 44 a of the water repellent mount 44 and the base end 60. Is preferably 0 to 20 mm.
[0028]
The water-repellent mount is not particularly limited as long as it has the physical properties described above, but the pulp, paper strength enhancer, and sizing agent can be used from the viewpoint that the physical properties can be easily expressed. And a water repellent backing containing 0.1 to 4% of the paper strength enhancer with respect to the pulp weight and 0.05 to 4% of the sizing agent with respect to the pulp weight. Is preferred.
[0029]
Examples of the pulp include soft pulp and hardwood chemical pulp (LBKP, NBKP), wood pulp such as semi-chemical pulp and mechanical pulp, mercerized pulp and crosslinked pulp obtained by chemically treating these wood pulp, and non-wood systems such as hemp and cotton. Cellulose fibers such as fibers and regenerated fibers such as rayon fibers are preferred. Of these materials, wood pulp, mercerized pulp obtained by chemically treating these wood pulp, crosslinked pulp, and the like are even more preferable from the viewpoints of product cost, sheet strength, papermaking suitability, and the like. These materials may be used alone or in combination of two or more in order to appropriately adjust the strength and moisture permeability of the water-repellent backing sheet to be obtained.
[0030]
In order to control the moisture permeability and flexibility of the resulting water-repellent mount, the pulp and synthetic pulp can be used in combination. In this case, the compounding amount of the synthetic pulp is preferably 100 parts by weight or less, more preferably 5 to 50 parts by weight with respect to 100 parts by weight of the pulp of the water-repellent mount. As the synthetic pulp, fibers made of polyolefin resins such as polyethylene fibers and polypropylene fibers can be used, and fibers made of high-density polyethylene or linear low-density polyethylene are particularly preferably used.
[0031]
As the paper strength reinforcing agent, commonly used chemicals such as a dry strength paper and a wet strength paper strength agent can be used. Examples of the dry paper strength agent include, but are not limited to, starch, modified starch, vegetable gum, carboxymethylcellulose, polyvinyl alcohol, polyacrylamide, sponge and the like. Examples of the wet paper strength agent include, but are not limited to, urea-formalin resin, melamine-formalin resin, dialdehyde starch, polyethyleneimine, epoxidized polyamide, and methylolated polyamide.
As described above, the paper strength reinforcing agent is preferably contained in an amount of 0.1 to 4%, more preferably 0.2 to 3%, and still more preferably 0.3 to 2% based on the pulp weight. If the blending amount of the paper strength enhancer is less than 0.1%, the blending effect cannot be expected so much, and even if blending exceeds 4%, the blending effect will be saturated, so it is within the above range. It is preferable.
[0032]
The sizing agent is classified into an additive-free sizing agent and a surface sizing agent according to usage, and a sizing agent generally used in the present invention can be used. The sizing agent is classified into raw materials, and there are rosin sizing agent, wax sizing agent, petroleum resin sizing agent, synthetic sizing agent, etc., and the components are natural rosin / maleic anhydride copolymer, hydrogenated rosin / maleic anhydride Copolymer, rosin / maleic anhydride copolymer wax emulsion, petroleum resin / maleic anhydride copolymer, alkyl / ketene / dimer, alkenyl succinic anhydride, stearic anhydride, etc. It is not a thing. As described above, the sizing agent is preferably contained in an amount of 0.05 to 4%, more preferably 0.1 to 3%, and still more preferably 0.1 to 2% based on the pulp weight. If the blending amount of the sizing agent is less than 0.05%, the blending effect cannot be expected so much, and even if blending exceeds 4%, the blending effect is saturated, so it is within the above range. preferable.
[0033]
The water repellent mount may contain a sizing agent fixing agent for fixing the sizing agent. As the sizing agent fixing agent, a sulfuric acid band, sodium aluminate, polyaluminum chloride, or the like is used, and it is desirable to blend 50 to 400% with respect to the weight of the sizing agent.
Moreover, you may mix | blend dye, a pigment, etc. with the said water-repellent mount as needed.
[0034]
The water-repellent mount is manufactured by a commonly used wet papermaking method. The paper after paper making may be subjected to a water repellent treatment using an oil such as paraffin wax or silicone for the purpose of enhancing water repellency. Moreover, you may apply a hot melt to a desired part (In the 2nd reference embodiment, the side part 44a wound up etc.) in the meaning which improves leak-proof property further. The hot melt is preferably applied by a coater method, and the coating basis weight is preferably 3 to 30 g / m ² .
Further, the water repellent mount 41 is fixed to the absorbent body 42 with an adhesive.
[0035]
In addition, the position and distance in the above-mentioned description are respectively the position and distance when the disposable diaper is viewed in plan.
Also in the absorbent article of one embodiment of the above-mentioned this invention and 2nd reference embodiment , there exists the same effect as the disposable diaper of 1st reference embodiment.
[0036]
In the above-described embodiment, the unfolded disposable diaper has been illustrated and described. However, the present invention can also be applied to a pants-type disposable diaper, a sanitary napkin, an incontinence pad, and the like.
Moreover, although not shown in figure, a leg elastic member may be distribute | arranged to the back surface side (back surface sheet side) of the side edge part of an absorber, and you may make it pinch and fix with a leak-proof sheet and an outer-layer nonwoven fabric.
In the above-described embodiment, an example in which the leg elastic member is disposed has been described, but the leg elastic member may not be provided.
Moreover, a liquid-impermeable film can be provided on the back side (back side sheet side) of the water-repellent mount. As the film, in particular, a moisture-permeable leak-proof sheet made of a mixture of a resin and a filler used for disposable diapers, and a stretchable and moisture-permeable film such as some ester and urethane films are particularly limited. Can be used.
[0037]
Moreover, in the disposable diaper 1 of one Embodiment of this invention, the side part 3a of a leak-proof sheet is located on the side edge part of the surface sheet 2, and the sheet material 61 and the surface sheet 2 are made into the leak-proof sheet 3. it may form a proximal end 60 by securing together by via.
[0038]
Although not particularly illustrated, the three-dimensional guard 6 has (1) two or more bent portions, and two or more pocket portions formed by the three-dimensional guard are arranged on the surface side of the three-dimensional guard when in use. (2) having a plurality of three-dimensional guard elastic members, and a plurality of three-dimensional guard elastic members are arranged between the base end and the free edge of the three-dimensional guard and at the free edge. In addition, a configuration in which a plurality of pocket portions are formed on the surface of the three-dimensional guard by the three-dimensional guard can be employed.
By adopting the above-mentioned forms (1) and (2) , the anti-moisture effect can be further enhanced. Specifically, even if excrement exceeds the three-dimensional guard, it is collected by these pocket portions, and leakage from the leg portions can be effectively prevented.
Further, the sheet material 61, folded outward at the disposable diaper inward from the proximal end 60 may be fixed at both longitudinal ends of the disposable diaper. In this case, the three-dimensional guard 6 has a dogleg shape with the bent portion positioned inside the disposable diaper. Furthermore, after folding back outward as described above, it may be folded back further inward. In this case, the three-dimensional guard 6 has a Z shape. In such a case, since the three-dimensional guard rises satisfactorily, the height of the three-dimensional guard at the time of use is maintained, and the leakage prevention property is improved.
[0039]
【The invention's effect】
The absorbent article of the present invention is prevented from being stuffy when worn, has excellent leakage prevention properties from the leg portion, and has a good feeling of use.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a first reference embodiment of a disposable diaper as an absorbent article according to the present invention.
FIG. 2 is a cross-sectional view schematically showing an XX cross section of FIG. 1;
FIG. 3 is a cross-sectional view (corresponding to FIG. 2) schematically showing an embodiment of the present invention.
FIG. 4 is a cross-sectional view (corresponding to FIG. 2) schematically showing a second reference embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Disposable diaper 11 Fastening tape 2 Surface sheet 3 Leak-proof sheet 4 Absorbent body 41 Main body 42 Diffusion sheet 5 Outer layer nonwoven fabric 6 Solid guard 60 Base end 61 Sheet material 63 Free end 64 Solid gather elastic member 7 Leg part 71 Leg elastic member 8 Waist Part 81 Waist elastic member A Abdominal side B Back side

Claims (3)

A liquid permeable topsheet, comprising a liquid-impermeable barrier sheet, and a liquid retentive absorbent body, outward from the right and left sides of the absorbent body, right and left contacts the leg of a wearer In the absorbent article in which a pair of leg portions are formed, and a pair of three-dimensional guards including a three-dimensional guard elastic member are formed inward of the left and right side edges of the leg portions,
The three-dimensional guard is composed of a hydrophobic sheet material and the three-dimensional guard elastic member, and the base end of the three-dimensional guard is formed so as to be located inward of the absorbent article with respect to the side edge of the absorber. ,
The hydrophobic sheet material, from the proximal end of the three-dimensional guard, and extends outward of the absorbent article than the side edges of the absorbent body,
The leg portion has a hydrophobic surface on the skin contact surface side and a hydrophilic surface on the non-skin contact surface side from the extended hydrophobic sheet material and the hydrophilic sheet laminated on the back surface side of the sheet material. is formed such that,
An outer layer nonwoven fabric is arranged on the surface of the leak-proof sheet, and the hydrophilic sheet is formed from the outer layer nonwoven fabric extended outward of the absorbent article from the side edge of the absorber. Absorbent articles that have been . The leakage preventing sheet, the longitudinal left and right side edges, said absorbent body of the right and left side edges to cover the mounting according to claim 1 Symbol are arranged so as to be positioned on the right and left side edges of the surface side of the absorber Absorbent articles. The absorber is provided with a water-repellent base sheet and absorption the body,
The water repellent mount is arranged such that its left and right side edges in the longitudinal direction cover at least the left and right side edges in the longitudinal direction of the absorbent body and is located on the left and right side edges on the surface side of the absorbent body, and , and the Klemm water height is less 5 mm / 10min, air permeability is 2~900sec / (300ml · 32 sheets), the absorbent article according to claim 1 Symbol placement basis weight of 14~60g / m ² .

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