JP5551963B2 - Water-absorbing articles - Google Patents

Description

  The present invention is not only for absorbent articles for excreta, particularly not only excrement mainly composed of water such as urine, but also excrement having relatively high viscosity such as excrement and mucus containing solids such as loose stool. Further, the present invention relates to an absorbent article that can exhibit excellent absorbency.

  For example, patients with gastrointestinal diseases tend to frequently excrete in small amounts after surgery, but the stool in this case is often soft stool (mud stool) and mucus is produced. There are many. As a measure for excrement disposal in this case, it is desirable to always use paper diapers and increase the number of diaper exchanges to keep the skin clean. It is preferable to absorb and hold the excrement and reduce the contact between the skin and the excrement as much as possible until the next diaper change. Absorbent articles used for such purposes are less noticeable to wear, and it is preferable that replacement and disposal are relatively easy. Conventionally, absorbent articles and sanitary napkins have been used for this purpose. It was often used. However, incontinence pads and sanitary napkins were not intended for the absorption of loose stool, etc., so the solid content of loose stool remained on the surface and touched the wearer's skin, causing discomfort due to excrement, rough skin, etc. There were many cases where this occurred.

As conventional proposals for dealing with such problems, “Paper Diapers” described in Japanese Patent Laid-Open No. 2-65861 (Patent Document 1), Japanese Patent Laid-Open No. 2001-269362 (Patent Document 2), and Japanese Patent Laid-Open No. 2001-269362 are disclosed. There is a “disposable wearing article” described in Japanese Patent Laid-Open No. 2001-276125 (Patent Document 3). However, all of the articles proposed by these patent documents have a structure in which a large space for receiving soft stool is provided between the upper sheet and the internal absorbent body, which is bulky as a whole and wearable. bad.
For example, Japanese Patent No. 4346596 (Japanese Patent Laid-Open No. 2007-97643, Patent Document 4) uses a perforated sheet provided with a large number of holes as a surface sheet in contact with the wearer's skin. An absorbent article having a configuration in which a permeable sheet that transmits excretory fluid is disposed below the top sheet and an absorbent element including a cotton-like pulp layer is disposed below the permeable sheet is disclosed. In the absorbent article disclosed in Patent Document 4, the stool permeation rate of the top sheet is larger than the soft stool permeation rate of the permeation sheet, and the soft stool permeation rate of the permeation sheet is larger than the soft stool permeation rate of the cotton pulp layer. Furthermore, the cotton-like pulp layer is disposed so as to be in contact with the upper transmission sheet without being covered with tissue paper or the like. Patent Document 4 describes that this configuration can absorb soft stool without reversing. Moreover, in this patent document 4, the hole diameter of the surface sheet is set to a relatively large value, for example, about ^{2 to} 10 mm in diameter (opening area of 3 to 75 mm ² ) so that soft stool can be quickly transmitted. . In addition, although there is no direct description about the depth of a hole or the thickness of a surface sheet, it describes that the fineness of the fiber which comprises a nonwoven fabric is 4-10 dtex, and the fabric weight is 5-45 g / m < ² >. Therefore, it is considered that a normal thin surface sheet is used. In this structure, since the surface sheet in contact with the skin of the wearer has such a thin sheet-like configuration, the solid content contained in the soft stool remains attached to the surface and touches the skin. Therefore, this structure does not sufficiently solve the problem of soft stool processing.

On the other hand, for example, Japanese Patent No. 3681320 (Japanese Patent Laid-Open No. 2001-276121, Patent Document 5) includes a permeable top sheet, an impermeable back sheet, and an absorbent core interposed between these two sheets. In the body fluid absorbent wearing article, an absorbent article having a configuration in which a mat-like panel is attached to the outer surface of the surface sheet in the rear area and the intermediate area is disclosed. The mat-like panel is formed of a fiber web having compression / restoration elasticity, and the fiber web includes a plurality of openings penetrating in the thickness direction and a mesh-like barrier portion surrounding each of the openings. And have. A barrier part is comprised from the low density fiber layer located in the surface sheet side, and the high density fiber layer located on this low density fiber layer. In this structure, the depth of the opening, that is, the thickness of the layer is about 2 to 30 mm, and the size of the opening is defined as the opening area, and the opening area is set to about 10 to 1600 mm ^2. Has been. In this configuration, loose stool or the like stays on the top surface of the absorbent article, that is, the top surface of the high-density fiber layer, does not immediately penetrate into the high-density fiber layer, and the wearer's skin and top surface rub against each other. The inside of the hole, that is, the lower density fiber layer side is explained. Of the loose stool that flows into the low density fiber layer and reaches the top sheet 11, moisture is permeated through the top sheet and absorbed by the liquid-absorbent core disposed below the top sheet. The portion will permeate into the low density fiber layer together with part of the moisture. In the body fluid-absorbing wearing article described in Patent Document 5, the mesh-shaped barrier portion is composed of an upper layer high-density fiber layer and a lower layer low-density fiber layer, so that intended absorption characteristics can be achieved. However, it is necessary to accurately control the density of the high-density fiber layer and the low-density fiber layer, and it is not easy to manufacture with low price and stable quality. In addition, it has been described that the solid content of loose stool penetrates into the low density fiber layer together with a part of moisture, but the solid content of loose stool is not sufficiently absorbed by the low density fiber layer and remains on the surface of the mat-like panel. May come into contact with the person's skin.

Japanese Patent Laid-Open No. 2-65861 JP 2001-269362 A JP 2001-276125 A Japanese Patent No. 4346596 Japanese Patent No. 3681320

In the absorbent article described in Patent Document 4, since the surface sheet in contact with the wearer's skin has a thin sheet-like configuration, particularly the retention and absorption of soft stool solids become insufficient, and the solid content contained in the soft stools is reduced. There is a problem in that it remains on the surface of the top sheet without being absorbed by the transmissive sheet and touches the skin. Further, in the body fluid-absorbing wearing article described in Patent Document 5, an opening is formed in the mat-like panel, and soft stool is retained in this opening to some extent, but the soft stool is not sufficiently absorbed, and the mat It is inevitable that soft stool adheres to the surface of the panel, and it is not easy to manufacture the barrier portion at a low price and with stable quality.
The present invention has been made in order to solve such problems in the prior art, and has sufficient holding ability even for excrement containing solid matter such as loose stool and excrement having high viscosity such as mucus. An object of the present invention is to provide an absorbent article that has absorption power and permeability, is easy to manufacture, and is inexpensive.

  In order to solve the above-mentioned problems, the present invention has an absorptivity including a top sheet that comes into contact with the skin of the wearer, a liquid-impermeable back sheet, and an absorber disposed between the top sheet and the back sheet. The top sheet has a thickness of 2 to 6 mm, and a plurality of holes having a diameter of 5 to 10 mm penetrating in the thickness direction of the top sheet are distributed in the plane of the top sheet. Characterized by an absorbent article that is disposed. The numerous holes formed in the topsheet, due to its diameter and depth throughout the thickness of the topsheet, provide sufficient volume to hold loose stool solids. Between the top sheet and the absorbent body, a second sheet in which small holes having a diameter of 1 to 4 mm are distributed in the plane can be disposed. This second sheet acts to quickly guide moisture contained in the soft stool that has passed through the holes in the top sheet to the lower-layer absorber.

  In the absorbent article according to the present invention, the top sheet is preferably formed of a material having water repellency. The top sheet can be preferably formed of a thermal bond nonwoven fabric, a laminate of a thermal bond nonwoven fabric and a spun bond nonwoven fabric, polyethylene foam, or urethane foam.

  In the absorbent article of the present invention, the hole formed in the top sheet is narrowed in the thickness direction from the front side surface of the top sheet to the periphery of the inlet adjacent to the front side surface of the top sheet. For example, an inclined surface such as a conical inclined surface is preferably provided. Further, the hole in the top sheet is formed on the absorber side surface of the top sheet, i.e., on the periphery of the outlet adjacent to the back surface, and expands the diameter of the hole toward the back surface of the top sheet. It is preferable that an inclined surface such as an inclined surface is provided. In this case, the maximum hole diameter is preferably 5 to 10 mm. The inclined surface formed around the entrance of the hole serves to rapidly introduce loose stool containing solid matter excreted into the hole, and the inclined surface formed around the exit of the hole is guided to the hole. It works to prevent the soft stool from flowing back toward the surface.

  In a preferred embodiment of the present invention, the holes in the top sheet are concentrated, that is, distributed in a pattern in a region extending from the excretion site, for example, the intermediate portion in the front-rear direction to the rear portion of the absorbent article. Typically, the absorbent article of the present invention has a length in use of 20 to 35 cm and a width of 7 to 15 cm. In a particular embodiment of the invention, the absorbent article is a soft stool absorbent pad.

  According to the present invention having the above-described configuration, loose stool once absorbed is sufficiently retained even for loose stool containing solids and highly viscous mucous excrement. There is provided an absorbent article that is inexpensive and easy to manufacture.

It is a perspective view which shows the external appearance of the stool absorption pad by suitable embodiment of this invention. It is a top view of the soft stool absorption pad of FIG. It is a schematic sectional drawing of the II line | wire of FIG. FIG. 4 is a partially enlarged view of FIG. 3. It is a top view which shows the modification of the stool absorption pad of this invention. It is a top view which shows one Example of this invention.

Hereinafter, an absorbent article according to one preferred embodiment of the present invention will be described with reference to the accompanying drawings.
Of the absorbent articles, the stool absorbent pad 30 particularly suitable for absorbing soft stool is illustrated here. However, this is merely an example, and of course, the present invention is not intended to be limited to this. The absorbent article of the present invention can be widely applied not only to the stool absorbent pad 30 but also to other absorbent articles such as an incontinence pad and a sanitary napkin. Moreover, the absorbent article of the present invention includes various types that are used together with a diaper or the like so as to be applied to the use surface of the diaper or attached to a predetermined portion of the underwear.

  FIG. 1 is a perspective view showing an appearance of a soft stool absorbent pad 30 according to the present invention, and FIG. 2 is a plan view thereof. As is clear from these drawings, the soft stool absorbent pad 30 of the present invention has an elongated strip shape as a whole, the four corners 20 are chamfered in a curved shape, and can be easily attached to the crotch portion.

  The soft stool absorbent pad 30 has at least a top sheet 2, a back sheet 4, and an absorber disposed between the top sheet 2 and the back sheet 4 (shown well in FIGS. 3 and 4 to be described later). ) Is included. These members are superposed on each other to form a layer.

  The size of the stool absorbent pad 30 when used is set to 20 to 35 cm in length (arrow “A” in FIG. 2) and 7 to 15 cm in width (arrow “A” in FIG. 2). In the illustrated example, the length is 27 cm and the width is 10.5 cm. By setting it as such a size, it can respond also to local excretion and can improve a feeling of wear. Furthermore, it is possible to suppress the spread of loose stool or the like inside the loose stool absorbent pad 30 during wearing, reduce the trouble of wiping the skin at the time of replacement, and facilitate disposal.

  A water repellent sheet 12 made of a water repellent nonwoven fabric is fixed to the back sheet 4 so as to extend from both side edges in the width direction, and further extended from both side edges in the width direction of the water repellent sheet 12. The side sheet 13 is fixed so as to rise on the top sheet 2. The rising portion is a portion that forms a so-called three-dimensional gather that prevents side leakage of urine or the like. At the time of use, the soft stool absorbent pad 30 is passed along the longitudinal direction of the user's crotch, and the crotch is covered with the side sheets 13 from both sides.

  Next, the configuration of the stool absorbent pad 30 shown in FIGS. 1 and 2 will be described in more detail with reference to FIGS. 3 and 4. Here, FIG. 3 is a schematic cross-sectional view taken along the line II of FIG. 2, and FIG. 4 is a partially enlarged view of FIG.

The uppermost top sheet 2 exposed on the surface is a part that directly touches the wearer's skin when in use. Therefore, the top sheet 2 needs to be formed of a material that is soft to the touch, does not irritate the skin, and has excellent wearability. Moreover, since the top sheet 2 is a part that directly receives excrement, it must be formed of a material that is resistant to moisture such as urine.
In order to satisfy these conditions, the top sheet 2 is preferably formed of a material having water repellency. Considering raw material costs and ease of processing, for example, a thermal bond nonwoven fabric (polypropylene / polyethylene, PET / polyethylene), polyethylene foam or urethane foam are considered preferred. Moreover, when using nonwoven fabrics, such as a thermal bond, what bonded the long fiber nonwoven fabrics, such as a spun bond nonwoven fabric (polypropylene), to the back surface is preferable also on strength.

  In addition to these conditions, the top sheet 2 allows not only excretion mainly composed of water such as urine but also excretion having relatively high viscosity such as solid content and mucus contained in loose stool from the skin of the wearer. It is desirable to have a function that can be reliably pulled apart. For example, if the stool solids or the like remain attached to the top sheet 2, the skin of the wearer is touched to cause discomfort, and troubles such as rough skin are caused. In order to provide the above function, in the present invention, the top sheet 2 has a predetermined thickness, and a plurality of holes 3 having a predetermined depth and diameter penetrating in the thickness direction are distributed in the plane. doing. By providing such a hole 3, the holding ability and the absorption capacity for excrement having a high viscosity such as excrement including solid matter such as loose stool and mucus are strengthened and permeability is imparted.

  The depth of the hole 3 is substantially determined by the thickness of the top sheet 2 (arrow “c” in FIGS. 3 and 4). This is because a hole formed in the top sheet 2 by punching or the like is used as it is as the hole 3. From experiments and experience, it is considered that the optimal depth of the hole 3, that is, the thickness of the top sheet 2 is 2 to 6 mm. When the thickness is less than 2 mm, the storage of loose stool becomes insufficient, and when it exceeds 6 mm, the loose stool becomes difficult to permeate, and the loose stool is likely to stay inside the top sheet.

The diameter of the hole 3 (arrow “D” in FIG. 4) is set to 5 to 10 mm (opening area 19.6 to 78.5 mm ² ). Comparison is made in this way so that not only urine and other excrement mainly containing water but also excretion containing solids such as soft stool and excrement with relatively high viscosity such as mucus can be smoothly permeated through the hole 3. Large diameter is required. This hole diameter is considered to reduce the risk of the loose stool and the like once stored.

  Thus, the holes 3 are considered to provide a sufficient volume to hold and absorb solids, mucus, etc. of soft stool, depending on their diameter and depth throughout the thickness of the topsheet 2. And is thought to allow them to penetrate quickly. Therefore, by using the top sheet 2 in which the holes 3 are formed, the conventional problem that the solid matter of soft stool remains attached to the surface of the top sheet 2 is solved.

  For example, when the top sheet 2 is formed of the above-described thermal bond nonwoven fabric or the like, the holes 3 can be easily created by punching. Therefore, the top sheet 2 can be easily manufactured at low cost and with stable quality. Further, these holes 3 should not be easily broken by the patient's weight or the like, but according to the above material, the hole 3 can be given a predetermined elasticity and is not easily crushed. Therefore, such a request is satisfied.

As well shown in the enlarged view of FIG. 4, the function of the top sheet 2 can be enhanced by providing the inclined surface 3 on the periphery of the hole 3.
For example, as shown in FIG. 4A, in the hole 3 formed in the top sheet 2, the thickness direction from the front surface 5a of the top sheet to the peripheral edge of the inlet adjacent to the front surface 5a of the top sheet 2 An inclined surface such as a conical inclined surface 3a may be provided to narrow the diameter of the hole (in the direction of the arrow “c” in the figure). Such an inclined surface 3a works to rapidly introduce loose stool containing solid matter excreted into the hole 3, and reduces the contact area between the top sheet 2 and the user's skin, thereby providing a feeling of wearing. Will be improved.
Further, as shown in FIG. 4 (b), in the hole 3 formed in the top sheet 2, a hole is formed at the outlet periphery adjacent to the back surface 5b of the top sheet 2 toward the back surface 5b of the top sheet 2. For example, an inclined surface such as a conical inclined surface 3b may be provided. Such an inclined surface 3b functions to prevent the soft stool guided to the hole 3 from flowing backward in the surface direction.
In addition, according to the material of the top sheet 2 mentioned above, since these inclined surfaces 3a and 3b can be easily made by compressing the periphery of the hole 3, for example, the processing cost is also low.

  The holes 3 may be evenly distributed as shown in the example of FIG. 2, but as shown in the modified example of FIG. 5, the holes 3 are concentrated in a region extending from the front-rear direction intermediate portion to the rear portion of the absorbent article. In other words, it may be distributed in a pattern. FIG. 5 is a plan view showing the stool absorbent pad in the same manner as in FIG. As shown in this figure, the strength of the top sheet 2A can be increased by concentrating the holes 3A locally and reducing the number of holes. Further, the shape of the hole may be a circle or an ellipse, or a rectangle such as a square as shown in FIG. Further, regarding the hole diameter, as shown in FIG. 5, the local portion may be set to a relatively large diameter, and the other portions may be set to a relatively small diameter. Thus, the shape and diameter of the hole can be freely changed within a predetermined range.

A second sheet 8 or a deodorizing sheet 10 may be disposed between the top sheet 2 and the absorbent body 6.
The second sheet 8 is bonded to the top sheet 2 in a dot shape (intermittently) by applying a hot melt adhesive, for example. The second sheet 8 can be formed of, for example, a thermal bond nonwoven fabric (weight per unit of 20 to 50 g / m ² ) such as air-through, and is subjected to a hydrophilic treatment. In addition, the top sheet 2 is provided in the plane of the second sheet 8. Similarly, a large number of through holes 9 are formed in a distributed manner. However, it is sufficient for the second sheet 8 to have the function of allowing only moisture contained in urine and soft stool to pass through, and the diameter of the small holes 9 formed is smaller than that of the top sheet 2, for example, about 1 to 4 mm ( The arrow “e” in FIG. The second sheet 8 acts to take away the moisture contained in the loose stool that has passed through the hole 3 of the top sheet 2 and to quickly guide the loose stool that has taken away the moisture to the lower absorbent body 6. The loose stool deprived of moisture is attached to the surface of the second sheet 8. The loose stool once attached does not easily flow back to the top sheet 2 side. Thus, the provision of the second sheet 8 enhances the holding capacity and absorption capacity for soft stool and the like.
For the deodorant sheet 10, for example, a nonwoven fabric or crepe paper in which metal ions such as silver and copper are supported on zeolite can be used as in the conventional case.

  The absorbent body 6 can be formed, for example, by mixing a hydrophilic fiber matrix of a fluff web, such as a wood pulp fluff, with particles of a known superabsorbent resin (SAP). Although not particularly shown, the surface of the absorbent body 6 may be embossed. These embosses control the diffusion of urine and the like, and easily deform the absorbent body 6 according to the user's body shape. As the fluff, synthetic fiber, polymer fiber, or the like may be used instead of the wood pulp fluff. Further, as the wood pulp fluff, it is preferable to use a treatment pulp that is low in bulk and can suppress the required power of the defibrating apparatus (power consumption of the defibrating machine when pulp is fluffed).

  The backsheet 4 only needs to be formed of a liquid-impermeable material having waterproofness so that liquid held in the absorbent body 6 does not leak into the underwear. For example, a thin plastic film such as a polyethylene film can be used. However, the back sheet 4 can be embossed or a non-woven fabric can be applied to the outside of the plastic film so as to make it soft and soft when worn. A pasted cross-like back sheet can also be used. Moreover, about the backsheet 4, it is preferable to reduce a stuffiness using a moisture-permeable film. Further, a fixing means such as a pressure-sensitive adhesive sheet 18 may be provided on the outer surface of the back sheet 4 to prevent a shift when the soft stool absorbent pad 30 is fixed to the underwear or the like.

  In order to form a three-dimensional gather, the first elastic member 14 is disposed along the longitudinal direction of the stool absorbent pad 30 outside the long side of the back sheet 4, and the tip portion of each side sheet 13 that rises up most. In addition, the second elastic member 16 is disposed along each longitudinal direction of the stool absorbent pad 30. The first elastic member 14 and the second elastic member 16 may be strands, ribbons, polyurethanes, synthetic rubbers, natural rubbers or the like made of an elastomeric polymer material, but are not limited thereto.

The first elastic member 14 is surrounded by the water repellent sheet 12, while the second elastic member 16 is surrounded by the side sheet 13 integrally connected to the water repellent sheet 12. With such a configuration, the water repellent sheet 12 and the side sheet 13 are stretched between them by the elastic force of the first elastic member 14 and the second elastic member 16. A three-dimensional gather can be formed in which the 13 rising portions are three-dimensionally formed and effectively prevent side leakage in the side direction such as loose stool. In addition, the water-repellent sheet 12 and the side sheet 13 can be formed from the same material as the back sheet 4, and may be formed from a water-repellent nonwoven fabric (weight per unit area: 17 to 20 g / m ² ). The water repellent sheet 12 may be attached separately from the back sheet 4, but may be formed extending from the back sheet 4. Further, the side sheet 13 may be formed extending from the water-repellent sheet 12, but may be provided separately from the water-repellent sheet 12 and later attached thereto.

表２

本発明の実施例のモニター結果を市販品による比較例とともに上の表１に示した。以下に詳細を説明する。 Table 1

Table 2

The monitoring results of the examples of the present invention are shown in Table 1 above together with comparative examples using commercial products. Details will be described below.

<Example 1>
The basic structure may be considered similar to the structure of FIG. The overall dimensions are 27 cm long and 10.5 cm wide. The top sheet 2 is a 5 mm thick air-through nonwoven fabric (45 g / m ² , polypropylene (PP) / polyethylene (PE)) and a spunbond nonwoven fabric having a slight thickness (α) (12 g / m ² , polypropylene (PP) ) And provided with many openings with a hole diameter (diameter) of 8 mmφ, the second sheet 8 has a large number of openings with a hole diameter (diameter) of 3 mmφ on a hydrophilic air-through nonwoven fabric (30 g / m ² ) on the absorber. It is provided on the entire surface. The second sheet 8 is applied and bonded to the top sheet 2 in a dot shape with a hot melt adhesive. Furthermore, the deodorizing sheet 10, the absorber 6, and the back sheet 4 were laminated on the lower side of the sheets 2 and 8 as the surface materials, and the overall dimensions were determined to be 27 cm long × 10.5 cm wide. The inclined surface 3a is formed in the hole 3 provided in the top sheet along the thickness direction by compressing the periphery. Furthermore, the three-dimensional gathers 13 and the adhesive sheet 18 made of the above-described nonwoven fabric (18 g / m ² ) provided with an elastic member were applied to both side portions of such a pad main body.

<Example 2>
The top sheet 2 is a polyethylene (PE) foam having a thickness of 6 mm and a large number of square openings having a pore diameter of 10 × 10 mm are provided on the entire surface of the absorber, and the second sheet 8 is hydrophilically treated in the same manner as in Example 1. Although it is an air through nonwoven fabric (30 g / m ² ), an opening having a hole diameter (diameter) of 4 mmφ was provided here. Other configurations are the same as those in the first embodiment.

<Example 3>
The configuration of Example 3 is shown in FIG. 6 in the same manner as in FIG. Substantial differences between Example 3 and Example 1 are as follows: 1) the thickness of the top sheet 2B, 2) the regions “f”, “ki”, “ki” ”provided with openings, and 3) the region“ f ”. The size, shape, and arrangement method of the openings 3B, 3B ', 4B, 4B' of "ki" and "ki".
More specifically, an air-through nonwoven fabric having a thickness of 3 mm, which is thinner than that of Example 1, is used for the top sheet 2B of Example 3. In addition, the area where the opening is provided is a rectangular area “K” whose one side is defined by the reference number “36” and rectangular areas “K”, “K” that are sandwiched from both sides along the longitudinal direction. '", That is, an area whose one side is defined by reference numerals 37 and 37'.
The rectangular region “F” is defined as a region slightly in the center in the longitudinal direction of the top sheet 2B. There are two types of openings: an opening 3B having a hole diameter (diameter) of 8 mmφ and a slightly vertically long opening 3B ′ having a maximum hole diameter of 8 mm. Are provided alternately in a plurality of stages over 190 mm along the longitudinal direction. On the other hand, in the rectangular regions “Ki” and “Ki ′”, slightly vertically long openings 4B and 4B ′ having a maximum hole diameter of 5 mm are provided in a plurality of stages over the length of 40 mm.

<Example 4>
The basic configuration of the fourth embodiment is the same as that of the third embodiment. Therefore, for the sake of convenience, description will be made using the reference numerals shown in FIG.
The substantial difference between Example 4 and Example 3 is 1) the thickness of the top sheet (2B), 2) the size of the rectangular region (f) in the longitudinal direction, and 3) the rectangular region (f), (g), This is in that an inclined surface is provided in the opening (3B), (3B ′), (4B), (4B ′) of (ki ′).
More specifically, an air-through nonwoven fabric having a thickness of 5 mm longer than that of Example 3 (but the same as Example 1) is used for the top sheet (2B) in Example 4. The dimension in the longitudinal direction of the rectangular area (a) is shorter than that of the third embodiment and is set to 150 mm. Further, the inclined surface 3a shown in FIG. 4A is formed around the entrance of the hole by the openings (3B) and (3B ′) in the rectangular region (f), while the rectangular regions (ki) and (ki ′) 4), the inclined surface 3b shown in FIG. 4B is provided in the vicinity of the exit of the hole by the openings (4B) and (4B ′).

<Comparative example>
A commercially available absorbent article was used as a comparative example. In particular, pay attention to the difference between the overall dimensions and the materials and configurations of the top sheet and the second sheet, compared to the actual product of the present application. The overall size of the comparative example is 56 cm long and 30 cm wide, and the top sheet is made of an air-through material having a substantially constant thickness and a thickness of less than 2 mm. The top sheet is provided with a number of openings of an ellipse having a hole diameter of 4 × 2 mm (an elliptical shape having a maximum diameter of 4 mm and a minimum diameter of 2 mm), and the second sheet has openings of the same size and shape. Many are provided.

  The above three target products were evaluated by five monitors. There are three evaluation items: “wearing feeling”, “skin stains”, and “detachment / disposal (easy)”, and the evaluation results are ◎ (very good), ○ (good), △ (normal) , X (bad).

  As a result, as shown in Tables 1 and 2 above, the products of the present invention obtained good results in almost all items. Except for the feeling of wearing in Examples 2 and 3, the product of the present invention exceeds the commercial product in all items. In addition, also from the evaluation result of the wearing feeling in Example 2, it is considered that the thickness of the top sheet, that is, the depth of the hole, is preferably about 2 to 6 mm. In addition, by comparing Example 1 and Example 2, it is considered that air-through is generally preferable to foam for a top sheet that directly touches the user's skin. Furthermore, from Example 3 and Example 4, it is also considered preferable to distribute the openings in a pattern in the region extending from the front-rear direction intermediate portion to the rear portion of the absorbent article. As apparent from the comparison between Example 3 and Example 4. It is also considered effective to provide an inclined surface of the opening.

2 Top sheet 3 Hole 3a, 3b Inclined surface 4 Back sheet 6 Absorber
8 Second sheet 9 Hole 10 Deodorant sheet 12 Water repellent sheet 13 Side sheet 14 First elastic member 16 Second elastic member 18 Adhesive sheet 20 Corner 30 Absorbent article (soft stool absorbent pad)

Claims (7)

An absorbent article comprising a top sheet in contact with the wearer's skin, a liquid-impermeable back sheet, and an absorbent body disposed between the top sheet and the back sheet, the top sheet comprising polyethylene It is formed of either foam or urethane foam, has a thickness of 2 to 6 mm, and a plurality of holes with a diameter of 5 to 10 mm penetrating in the thickness direction of the top sheet are distributed and formed in the surface of the top sheet. A second sheet in which small holes having a diameter of 1 to 4 mm are distributed in a plane is disposed between the top sheet and the absorber . The absorbent article according to claim 1 , wherein the top sheet is formed of a material having water repellency. The hole formed in the top sheet is provided with an inclined surface that narrows the diameter of the hole in the thickness direction from the surface on the front side of the top sheet on the periphery of the inlet adjacent to the surface on the front side of the top sheet. The absorbent article according to claim 1 or 2 . The hole formed in the top sheet is provided with an inclined surface that expands the diameter of the hole toward the back side surface of the top sheet on the periphery of the outlet adjacent to the back side surface of the top sheet. The absorbent article according to 1 or 2 . The absorptive article according to any one of claims 1 to 4 with which the hole of said top sheet is intensively distributed in the excretion part. The absorbent article according to any one of claims 1 to 5 , which has a length in use of 20 to 35 cm and a width of 7 to 15 cm. A soft stool absorbent pad using the absorbent article according to any one of claims 1 to 6 .

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