Urine absorption pad

Abstract

To provide a urine absorption pad and guides that prevent leakage of urine.SOLUTION: A urine absorption pad includes: a water-permeable top sheet 16 that contacts skin; a water-impermeable back sheet 17 that contacts underwear; an absorbent 18 that is sandwiched between the top sheet 16 and the back sheet 17 and absorbs urine that has passed through the top sheet 16; and guides A 11 and guides B 12 that allow urine to permeate therethrough, stand upright so as to rise toward the side of the top sheet 16 relative to the back sheet 17, and control a flow of urine.SELECTED DRAWING: Figure 15

Description

[Technical Field]

[0001] The present invention relates to a urine absorbent pad that is worn in front of the genitals and absorbs excreted urine. [Background technology]

[0002] Many urine absorption pads (hereinafter simply referred to as pads) are commercially available and well known. In addition to pads, there are also pants-type urine absorption pads. Pants-type pads are less likely to leak urine outside the pants, eliminating the worry of soiling clothing, but are just as time-consuming to put on and change as pants, making them unsuitable for use when going out. Furthermore, compared to pads, they have many parts that do not directly contribute to urine absorption, are heavy and large in shape, are inconvenient to carry, and place a heavy burden on the environment when disposed of.

[0003] On the other hand, existing pad-type devices are compact and almost entirely composed of parts that directly contribute to urine absorption, and are easy to put on and replace, but they are not reliable, especially for men, as they are unable to absorb the entire amount of urine that an adult male urinates (150cc to 200cc) in one go, and are ultimately only used to absorb residual urine after urination.

[0004] The imperfections of men's pads likely stem from a design concept that is not significantly different from that of women's pads, despite the fact that they are for men. There are two key differences in the design of men's pads compared to women's pads. First, while the direction of urine release is perpendicular to the plane of the pad in women's pads, in men's pads, the direction of urine release is parallel to the plane of the pad and is not fixed. Second, the scrotum (hereafter referred to as "testicles") is located directly below the point where urine is released. The relative positions are urethral opening → testicles → absorbent material at the rear of the pad. As a result, the testicles act as an obstacle, preventing released urine from reaching the absorbent material at the rear of the pad, and instead pooling on the upper front surface of the pad. If the absorbent material's urine absorption capacity is exceeded, the urine will spill out of the pad. Furthermore, the testicles press against the pad surface, impeding the flow of urine within the pad. This can result in unabsorbed urine spilling out of the front and sides of the pad, even if sufficient urine absorption capacity remains at the rear of the pad. The front side of the pad here refers to the side of the pad worn by the wearer that is closer to the wearer's head in the direction of the wearer's height, and the rear side refers to the side of the pad worn by the wearer that is closer to the wearer's feet in the direction of the wearer's height.

[0005] To treat frequent urination, it is recommended to hold in urine for as long as possible rather than using medication. However, in many cases, patients hold in urine until they are on the verge of leaking, and then when they finally reach the toilet, urination begins before they can even pull down their pants. This urination cannot be stopped until it is completely released (hereinafter referred to as "dripping"). For this reason, the recommended treatment of "holding in urine for as long as possible" cannot be implemented unless there is a guarantee that the pad will reliably capture the entire amount of urine. While existing pads have sufficient absorbency, due to the design flaws mentioned above, they are unable to capture the 150cc to 200cc urination volume of an adult male, making them useless for this treatment. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Utility Model Registration No. 3171928 [Patent Document 2] Patent No. 5433815 [Patent Document 3] Japanese Patent Application Publication No. 2019-146657 Summary of the Invention [Problem to be solved by the invention]

[0007] Patent Document 1 relates to disposable absorbent articles such as incontinence pads for adults, but does not take into consideration the two major points to note about pads for men. In Figures 5A and 5B, part numbers 83 and 85 are shown as a sort of shielding wall, but these are sheet-like so-called "leg cuff sheets" and are assumed to be made of woven or nonwoven fabric materials (paragraph

[0008] However, this is insufficient to block urine released parallel to the surface of the pad from leaving the system, and it is unable to temporarily store urine, allowing urine to overflow.

[0008] Patent Document 2 relates to a urine absorption pad for men. When worn, the penis is inserted into a first space 72 located below the pad, preventing excreted urine from leaking outside the system (see paragraph

[0010] ). Furthermore, when the penis is facing upward, a second space 73 located above the pad receives excreted urine and prevents it from leaking outside the system (see paragraph

[0011] ). Furthermore, to prevent side leakage, a barrier cuff sheet 50 stands up to form a three-dimensional cuff, effectively preventing urine leakage (see paragraph

[0012] ).

[0009] The pad is expected to be somewhat effective when the wearer is immobile, such as when bedridden. However, problems arise when the wearer is engaged in daily activities, making it uncertain whether the pad will prevent urine leakage outside the body. That is, while the pad maintains a high degree of contact with the wearer during daily activities, vertical sliding of the body inevitably occurs. When walking, or especially when standing or sitting, vertical sliding between the body and the pad can cause the penis to slip out of the first space 72. The vertical direction here refers to the direction of the wearer's height when wearing the urine absorption pad.

[0010] Patent Document 2 has experienced exactly this situation and envisions a case in which the penis faces upward (when it comes out of the first space 72), but it is entirely conceivable that the penis will come out of the first space 72, not face upward, and not return to the first space 72, and instead be positioned outside the cover sheet 61. Because the cover sheet 61 is formed from a fibrous nonwoven fabric or the like that is liquid-resistant or liquid-impermeable (see paragraph

[0015] ), if the penis is positioned outside the cover sheet 61, urine will not be absorbed, leading to all of the urine leaking out.

[0011] Even in the case where the penis faces upward as envisioned in Patent Document 2, it is uncertain whether the penis will reliably enter the second space 73 located at the top of the pad, which again leads to urine leakage and reduces reliability. Furthermore, the barrier cuff sheet 50, which claims to prevent side leakage, stands up highest in the center of the pad, but is lower at the top and bottom of the pad where the probability of side leakage is higher (see Figure 6), which also reduces reliability. This is because it is thought that the chances of urination with the penis facing straight to the side are quite low.

[0012] Although the position of the beads is shown in Figure 8 of Patent Document 2, the pressure of the beads on the pad body is not taken into consideration. In other words, Patent Document 2 does not take into consideration the problem specific to existing men's pads, in that the beads prevent uniform absorption of urine throughout the pad, preventing the prepared absorbent from achieving 100% of its capacity, and leading to urine leakage outside the system.

[0013] There are other prior patent documents that, like Patent Document 2, encase the penis in a pocket-like structure (for example, Utility Model Registration No. 3078455), but for the same reasons as Patent Document 2, they cannot prevent urine leakage.

[0014] Patent Document 3 also discloses a urine absorption pad for men. It uses "three-dimensional gathers" to prevent side leakage, which consist of a three-dimensional gather sheet and a stretchable elastic member (see paragraph

[0048] ). In this respect, it is no different from Patent Document 2. As noted in the latter part of paragraph

[0011] , the pad stands up highest in the center, but is lower at the top and bottom, where side leakage is more likely, making it less reliable. This is because, as mentioned above, it is considered highly unlikely that the penis will be urinated with its head facing straight to the side.

[0015] Patent Document 3 discloses a bodily fluid leakage test (see paragraph

[0048] ). None of the above-mentioned documents other than Patent Document 3 disclose the results of the leakage test, and so the concerns that the patent application was filed and disclosed without noticing the two aforementioned points that are important in the design of men's pads cannot be dispelled. This is because doubts about the true effectiveness are inevitable. Meanwhile, Patent Document 3 discloses the bodily fluid leakage test, but it involves fixing the pad to an inclined plate and flushing it with saline (see paragraph

[0061] ), and since it is not an actual wearing experiment, the true effectiveness is unclear. [Means for solving the problem]

[0016] In order to achieve the above object, the urine absorption pad that is the subject of the first invention comprises a water-permeable top sheet that contacts the skin, a water-impermeable back sheet that contacts the underwear, an absorbent sandwiched between the top sheet and the back sheet that absorbs urine that has permeated the top sheet, and a guide that allows urine to penetrate and stands upright so that it is closer to the top sheet than the back sheet, thereby controlling the flow of urine.

[0017] To achieve the above object, the guide of the second invention is attached to the surface of the top sheet of a urine absorbent pad that contacts the wearer's skin, and controls the flow of urine by allowing urine to penetrate and rise from the top sheet toward the wearer's skin. Controlling the flow of urine here means directing the urine that has penetrated the guide in a desired direction or at a desired flow rate.

[0018] The urine absorbent pad of the first invention uses the absorbent to the fullest extent and has a predetermined width so that it can comfortably absorb 150cc to 200cc of urine at a time, and is equipped with a guide that stands upright and controls the flow of urine so that it rises closer to the top sheet than the back sheet.The guide of the second invention controls the flow of the wearer's urine in the urine absorbent pad to which it is attached, guiding the urine over a wide area of ​​the urine absorbent pad and making full use of the urine absorption capacity of the urine absorbent pad.The guide of the second invention can be freely attached to commercially available urine absorbent pads.

[0019] "Self-standing" as used herein does not refer to a film-like structure, but rather refers to a structure that can stand upright and remain standing by itself. The guide in this invention has a predetermined cross-sectional thickness (several millimeters) in the rising direction, and not only functions as an obstacle but also can contain voids through which urine can penetrate and retain water, thereby controlling the flow of urine by temporarily storing urine within the guide or by forming a flow path within the guide. "Temporary" here means for a predetermined period of time. Many patent documents cite sheet or film-like structures as guides for preventing lateral leakage of urine. These structures are suspended by elastic bodies such as rubber or are formed to bend in two directions, and are only able to stand upright to function as an obstacle to prevent urine overflow. However, as described in paragraph

[0011] of this specification, these structures are not foolproof because they can allow urine to leak.

[0020] The guide is a self-supporting, open-pore porous body that prevents urine from overflowing outside the system. Since it may come into direct contact with the skin, it is flexible, and specifically, a sponge-like synthetic resin that can absorb water is desirable. The guide temporarily absorbs and stores urine, preventing it from overflowing outside the system (hereinafter, also referred to as "Guide A").

[0021] An immersion test was conducted to confirm the water retention of Guide A. The results of the immersion test are shown below. For Guide A, "Gekiochi (registered trademark) Papa" S-693 manufactured by LEC Corporation was selected.

[0022] [Table 1]

[0023] The outer shape of the guide A was 15 mm square x 125 mm. The 125 mm length was the same as the length of the guide B described below. Twenty guides A shaped to this outer shape were prepared and weighed, yielding a weight of 13 g. The guides A were placed in a kitchen tub so that they did not overlap, and then a shower of water was sprayed from approximately 30 cm above the tub. Because the guides A have high water absorption, the entire guide A easily absorbed and retained water. The water-retained guides A were then removed from the kitchen tub and left with their longitudinal direction vertical for one minute. During this time, almost no water dripped from the guides A, and they maintained their water-retaining state. After this, the weight of the 20 water-retained guides A was measured and found to be 499 g. The weight of the water-retained guides after immersion divided by the weight of the dry guides (not retaining water) was 38.4. This value is the water retention ratio of the guides A. It can be seen that the guides A have extremely high water absorption and water retention properties. The guide A has a sponge-like structure, that is, the continuous voids within the main body of the guide A are formed like a series of air bubbles, and therefore the above-mentioned effects are exhibited.

[0024] It is desirable that guide A be located at the outermost edge in the vertical direction of the urine absorbent pad. Furthermore, it is desirable that the outer surface of the outermost edge of guide A be impermeable. Because guide A stands upright and is self-supporting, it has a constant height whether it is on the upper or lower side of the pad, making it possible to prevent urine overflow. Because guide A is a porous body with continuous pores, it is also possible to store a certain amount of urine released toward guide A, further contributing to preventing urine overflow. In addition, because guide A is sponge-like, when the pad is vacuum-packaged, it reduces in volume and becomes compact, and when removed from the package, it stands up under external air pressure and performs its original function as a barrier.

[0025] Guide A may contain a urine absorbent (hereinafter simply referred to as "absorbent") in its material. This is based on the finding that, in a test using an existing commercially available men's urine absorption pad, urine was unevenly absorbed on one side of the pad, causing the volume of the absorbent to expand in that area, preventing subsequent urine from flowing to the lower part of the pad (where there was still room for absorbent), resulting in urine overflow from the area near the expanded part of the absorbent. In other words, by incorporating an absorbent into Guide A, this part of Guide A undergoes a urine absorption reaction due to the first wave of urine, causing its volume to expand, providing a stronger barrier against the subsequent urine. This provides a place for the blocked urine to go (mainly the lower part of the pad), thereby preventing urine from overflowing from the area where the first wave of urine overflowed.

[0026] Furthermore, the guide, which has a predetermined width and stands upright so as to be closer to the top sheet than the back sheet and controls the flow of urine, is preferably configured so that urine does not easily accumulate inside, has low flow resistance to the flow of urine, and allows urine to flow through the inside and guide it to other areas, so that it can guide the surging urine to other parts of the pad. Specifically, a material made of fibrous polymeric material such as synthetic resin, which is woven into a three-dimensional shape so that the fibers are intertwined (specifically, a loofah-shaped material made from the loofah plant) is preferred (hereinafter also referred to as "Guide B"). Guide B has larger continuous voids formed inside than Guide A.

[0027] An immersion test was conducted to confirm the water retention of guide B. The results of the immersion test are shown below. For guide B, "Gekiochi-kun" (registered trademark) K00213 manufactured by LEC Corporation was selected.

[0028] [Table 2] The guide B had a diameter of 18 mm and a length of 125 mm. Twenty guides B of this shape were prepared and weighed, resulting in a weight of 19 g. The guides B were placed in a kitchen tray so that they did not overlap, and then a shower of water was sprayed from approximately 30 cm above the tray. During this process, the guides B had low water absorption and were difficult to absorb, so they floated on the water. Therefore, the guides B were manually pressed down into a kitchen tray filled with water, allowing the water to fully penetrate the guides B. The fully water-soaked guides B were then removed from the kitchen tray and left for 1 minute, with their longitudinal direction aligned vertically. During this time, a large amount of water dripped from the guides B, but the dripping stopped and equilibrium was reached after about 1 minute, so the leaving time was set to 1 minute. After this, the weight of the 20 guides B was measured and found to be 36 g. The water retention ratio of the guides B was 1.9. The guides B have this level of water retention (water retention ratio) due to the moderately loose intertwining of the fibers. When Guide B is installed with its longitudinal direction oriented horizontally, not only will urine that has penetrated any part of Guide B immediately pass through Guide B in the short direction of Guide B, but it is also thought that a portion of the urine that has penetrated will remain within Guide B and flow laterally (longitudinal direction). Guide B has an overwhelmingly lower water retention capacity for urine (water retention ratio) than Guide A, so the interior of Guide B becomes a flow path for urine. By appropriately adjusting the installation location of Guide B within the pad, urine can be guided to the desired location within the pad.

[0029] It is desirable to position Guide B anywhere other than the outermost edge of the pad. Positioning Guide B along the inside of Guide A ensures that urine blocked by Guide A can be guided to the underside of the pad. Furthermore, Guide B is a three-dimensionally woven structure made of intertwined fibrous polymeric materials. Therefore, if Guide B is positioned vertically in the center of the pad, it will be unable to contain much urine, but even when a certain amount of external pressure is applied, the continuous voids will not be completely crushed, and a continuous space will be maintained. Therefore, Guide B should be shaped like an I-shape (i.e., a straight line) so that it can withstand the pressure of the beads and ensure a urine flow path, allowing urine to reach the absorbent material mainly behind the beads, and the absorbent material behind the beads will fix the urine and prevent overflow.

[0030] Furthermore, by positioning the guide B in a substantially horizontal direction in the center of the pad, even if urine is released in one horizontal direction within the pad, the guide B can disperse the urine in the other horizontal direction within the pad. For the guide B to function as a urine flow path, it is necessary to arrange it in both the vertical and horizontal directions as described above. The horizontal direction here refers to the direction perpendicular to the wearer's height when the wearer is wearing the urine absorbent pad and along the plane of the pad's extension. Therefore, a U-shape or an H-shape is preferably used for arranging the guide B.

[0031] Furthermore, guide B can also be formed from the absorbent material itself. The basic function required of guide B is to smoothly deliver urine to the desired location. For example, when the above-mentioned H- or I-shape is formed from the absorbent material itself, no absorbent material is placed in the H- or I-shaped portion from the beginning, or the amount of absorbent material is reduced compared to the surrounding area. Alternatively, the urine absorption rate of the absorbent material can be manipulated so that an absorbent material with a slower urine absorption rate is placed in the H- or I-shaped portion compared to the surrounding area. This enables smooth movement of urine in the horizontal and vertical directions and delivery of urine to the entire pad. This takes advantage of the fact that the volume of the absorbent material expands rapidly and significantly when it absorbs urine. [Effects of the Invention]

[0032] According to an embodiment of the male urine absorbent pad of the present invention, a guide A, which stands upright and has a certain height, is located at the outermost edge of the pad. Therefore, regardless of the direction in which the penis is facing during daily activities after wearing the pad, guide A is porous and continuous, absorbing and receiving urine. If a water-absorbing agent is present inside, guide A's volume expands to form an even larger wall, preventing urine leakage. Because guide A is positioned vertically on the pad, most of the blocked urine flows downward along guide A and is absorbed and fixed by the absorbent present there. When guide B is located inside along guide A, guide B is a fibrous polymer material woven into a three-dimensional shape, forming numerous continuous voids, which acts as a transport pipe, withstanding the pressure of the beads that obstruct the flow of urine within the pad, transporting urine to the absorbent behind the beads, where the absorbent fixes the urine and prevents leakage. Even if the penis is deviated to the left or right, the presence of guide B, which is located horizontally in the center of the pad, distributes urine to both the left and right sides of the pad (i.e., horizontally). Thus, the presence of the guide distributes urine throughout the pad, and the entire absorbent capacity is used to fix the urine, so despite its compact size, it can easily absorb the 150cc to 200cc amount of urine excreted by an adult male in one go.

[0033] This allows for the treatment of frequent urination, and the recommended "holding in as much as possible" can be practiced anywhere, making it particularly useful for middle-aged and elderly men to re-enter society without the use of drugs. Furthermore, its easy-to-use, highly reliable design allows for convenient urination anywhere, making it ideal not only for medical treatment and caregiving purposes, but also for leisure activities such as hiking and mountain climbing, where finding a toilet is difficult, long drives, and long theater visits. It is expected to improve quality of life as a simple, removable toilet. In other words, it offers a new lifestyle in which urination opportunities are not limited by the surrounding environment, allowing users to carry and use a portable "pad toilet." [Brief explanation of the drawings]

[0034] [Figure 1] 1 is a plan view of a urine absorption pad according to a first embodiment of the present invention. [Figure 2] 1 is a side view of a urine absorption pad according to a first embodiment of the present invention. [Figure 3] FIG. 2 is a schematic view of a urine absorption state in the first embodiment of the present invention. [Figure 4] FIG. 10 is a plan view of a urine absorption pad according to a second embodiment of the present invention. [Figure 5] FIG. 10 is a side view of a urine absorption pad according to a second embodiment of the present invention. [Figure 6] FIG. 10 is a schematic view of the urine absorption state in the second embodiment of the present invention. [Figure 7] FIG. 10 is a plan view of a urine absorption pad according to a third embodiment of the present invention. [Figure 8] FIG. 11 is a schematic view of a urine absorption state in the third embodiment of the present invention. [Figure 9] FIG. 10 is a plan view of a urine absorption pad according to a fourth embodiment of the present invention. [Figure 10] FIG. 10 is a side view of a urine absorption pad according to a fourth embodiment of the present invention. [Figure 11] FIG. 10 is a plan view of a urine absorption pad according to a fifth embodiment of the present invention. [Figure 12] FIG. 10 is a side view of a urine absorption pad according to a fifth embodiment of the present invention. [Figure 13] FIG. 11 is a side view of a urine absorption pad in which the arrangement of the mesh body is changed according to a fifth embodiment of the present invention. [Figure 14] FIG. 13 is a schematic view of a urine absorption state in the fifth embodiment of the present invention. [Figure 15] FIG. 10 is a plan view of a urine absorption pad according to a sixth embodiment of the present invention. [Figure 16] FIG. 13 is a side view of a urine absorption pad according to a sixth embodiment of the present invention. [Figure 17] FIG. 13 is a plan view of a urine absorption pad prepared for carrying out a urination experiment according to a sixth embodiment of the present invention. [Figure 18] FIG. 13 is a schematic view of a urine absorption state in the sixth embodiment of the present invention. [Figure 19] Overview of urine absorption in currently available male urine absorption pads. DETAILED DESCRIPTION OF THE INVENTION

[0035] First Embodiment Figures 1 to 3 show an example of a urine absorption pad according to the present invention. Figure 1 is a plan view of the pad according to the present invention, Figure 2 is a side view of the same, and Figure 3 shows an overview of the reaction state of the absorbent 18 after a usage experiment of the same pad with the top sheet removed.

[0036] 10 in Figure 1 is a urine absorption pad for men that embodies the present invention, and uses as its base a thin, wide 300cc "Poise (registered trademark) Men's Pad" manufactured by Nippon Paper Crecia Co., Ltd. Before attaching various guides, etc., the portion corresponding to the barrier cuff sheet (50 in Patent Document 2) was removed because it is impermeable and may inhibit urine absorption.

[0037] Reference numeral 11 denotes guide A, whose outer surface is impermeable. Reference numeral 11W denotes the impermeable outer surface. This allows guide A 11, attached to the topsheet 16, to prevent urine from overflowing over the outer surface of 11W and out of the system (i.e., outside the urine absorption pad). Guide A was made from LEC Corporation's "Gekiochi (registered trademark) Papa" S-693, appropriately cut into 15 mm squares. This is a sponge-like material that can easily absorb water. Reference numeral 12 denotes guide B, and in the first embodiment, three guides B were installed. Guide B was made from a cylindrical section with a diameter of approximately 18 mm of LEC Corporation's "Gekiochi-kun" (registered trademark) K00213, appropriately divided and cut. This is a so-called loofah-shaped piece made of intertwined synthetic resin fibers. Guide A 11 and guide B 12 can control the flow of urine through the urine absorption pad 10. Both guide A 11 and guide B 12 are porous bodies with continuous pores. The size of each pore in the continuous pores of guide A 11 is smaller than the size of each pore in the continuous pores of guide B 12. Therefore, guide A 11 is more likely to temporarily store urine that has penetrated and absorbed than guide B 12. In contrast, guide B 12 has a lower ability to temporarily store urine that has penetrated than guide A 11, and urine is more likely to flow through it. Therefore, guide B 12 attached to the top sheet 16 can guide urine to other areas within the urine absorbent pad 10.

[0038] Guide A 11 and guide B 12 were attached to the surface of the men's urine absorption pad 10 using double-sided tape. The double-sided tape used was "Scotch (registered trademark) strong double-sided tape" KB-10 manufactured by 3M Japan Ltd. Guide A 11 and guide B 12 stand independently so as to rise closer to the top sheet 16 than the back sheet 17, and are attached to the wearer's skin side of the top sheet 16. Guide A 11 and guide B 12 are formed in a strip shape. Guide A 11 and guide B 12 have a predetermined width in the short direction that is along the surface on which the attached top sheet 16 extends and perpendicular to the longitudinal direction of the strip.

[0039] Reference numeral 13 denotes a plastic kitchen bag. This guides urine to prevent leakage from the bottom end of the pad if the urine reaches the bottom end in liquid form before being absorbed by the absorbent. Reference numeral 14 denotes double-sided tape, which is used to attach the opening of the plastic bag 13 to the surface of 10, since urine may leak from the opening if it is left free. The total weight of the pad of the present invention equipped with these features was 32 grams.

[0040] The two-dot chain line in Figure 1 indicates the penis insertion position when the pad of the present invention is worn. Figure 2 is a side view of the pad of the present invention. 16 is the top sheet of the pad of the present invention, which is a primarily water-permeable sheet. The top sheet 16 contacts the wearer's skin. 17 is the back sheet of the pad of the present invention, which is water-impermeable. The back sheet 17 contacts the underwear worn by the wearer. Between 16 and 17 is contained an absorbent 18 for absorbing urine that has permeated the top sheet 16. In other words, the absorbent 18 is sandwiched between the top sheet 16 and the back sheet 17. It can be seen that guide A 11 already has a certain height near the top end of the pad of the present invention. 15 is cellophane tape, which completely closes the opening on the back side of the vinyl bag 13 of the pad of the present invention. The dashed line 15 in Figure 1 represents the cellophane tape.

[0041] In the experiment, the pad of the present invention was worn in tight pants, and after about two and a half hours, a urination experiment was conducted in a standing position with both feet approximately shoulder-width apart. No leakage of urine was observed outside the system during this urination experiment. The weight of the pad of the present invention after this experiment was 243 grams. Since the initial weight after all the various guides and other components were attached was 32 grams, the net weight was 211 grams, and assuming a urine specific gravity of 1, 211 cc of urine was absorbed and captured without leakage outside the system.

[0042] Figure 3 shows an overview of the reaction status of absorbent 18 after removing the top sheet 16 after the experiment. The single-hatched area is the area that has yellowed. Although a small white unreacted area remains at the top edge of the pad, the entire pad has reacted. The double-hatched area is the area that has yellowed more deeply than the single-hatched area. This suggests the possibility of further urine absorption.

[0043] After the use experiment, a few droplets of water were observed inside the plastic bag 13. The released urine penetrated into guide A 11 and guide B 12, and flowed smoothly over the pad due to guides A 11 and B 12. Most of the urine was captured by the absorbent 18 along the way, and some of it may reach the bottom edge of the pad directly. Therefore, while the plastic bag 13 is considered a necessary guide element for preventing urine leakage, it does not have to be the plastic bag 13. At the very least, the plastic bag 13 is not required on the back sheet side of 17. In this experiment, the plastic bag 13 was used for ease of processing, but in practice, it only needs to be on the top sheet side of 16. Furthermore, instead of being bag-shaped, an impermeable guide membrane covering the outside of guide A 11 and guide B 12 (the side opposite the part (side) attached to the top sheet of 16) and the top sheet of 16 may also be used.

[0044] Table 3 shows the results of repeated fitting tests using the same configuration as in the first embodiment.

[0045] [Table 3]

[0046] In all cases, there was no leakage of urine outside the system. The feeling of use here refers to the feeling of use after the wearing test. In the first embodiment, after urination, the lower part of the penis and some of the balls that come into contact with the penis felt wet. However, the feeling of use was not particularly problematic.

[0047] According to the first embodiment configured as above, the following effects are achieved.

[0048] The urine absorbent pad 10 comprises a water-permeable top sheet 16 that contacts the skin, an impermeable back sheet 17 that contacts the underwear, an absorbent 18 that is sandwiched between the top sheet 16 and the back sheet 17 and absorbs urine that has permeated through the top sheet 16, and guides A 11 and B 12 that allow urine to penetrate and stand independently so as to rise closer to the top sheet 16 than the back sheet 17, thereby controlling the flow of urine. With this configuration, guides A 11 and B 12 can guide urine over a wide area of ​​the urine absorbent pad 10, making it possible to fully utilize the urine absorption capacity of the urine absorbent pad 10.

[0049] Guide A 11 is a porous body with continuous pores that temporarily absorbs and stores urine, preventing it from overflowing outside the system. This configuration makes it possible to store a certain amount of urine released toward guide A 11, preventing urine from overflowing. In addition, because guide A 11 is a porous body with continuous pores (i.e., sponge-like), vacuum packaging of this pad reduces its volume, making it compact and less bulky.

[0050] The guide A of 11 is in the form of a sponge that can absorb water. With this configuration, the continuous voids are formed like connected bubbles, which makes it easier to retain water in the form of droplets, and allows urine to be stored efficiently.

[0051] Guide B 12 allows urine to flow through it and guides it to other areas. With this configuration, guide B 12 allows urine to flow easily through it, so it can guide urine to a desired area within the pad. Furthermore, by arranging guide B 12 along guide A 11, urine that has been prevented from overflowing by guide A 11 can flow through guide B 12, so that urine can flow smoothly within the pad and be efficiently absorbed.

[0052] The guide B 12 is a loofah-shaped structure made of intertwined synthetic fibers. This structure has larger continuous voids than the guide A 11, allowing urine to flow more easily through the guide B.

[0053] Second Embodiment Figures 4 to 6 show another embodiment of a urine absorption pad according to the present invention. Figure 4 is a plan view of the pad according to the present invention, Figure 5 is a side view of the same, and Figure 6 shows an overview of the reaction state of the absorbent 18 after a usage experiment of the same pad with the top sheet removed. 40 in Figure 4 is a urine absorption pad for men embodying the present invention, and a thin, wide 300cc "Poise (registered trademark) Men's Pad" manufactured by Nippon Paper Crecia Co., Ltd. was used as its base.

[0054] In the second embodiment, the men's pad was split vertically along the center line, and the top was opened about 4 cm and reattached with packing tape. Care was taken during the splitting process to avoid spilling the absorbent 18 contained therein, so the loss of absorbent 18 outside the system was extremely minimal. After fixing it with packing tape, some of the absorbent 18 spilled toward the packing tape, but since it was captured by the packing tape, it was not lost outside the system. To make it easier to attach, kitchen paper was placed on top of the packing tape and glued.

[0055] The tape acts like a riverbed, with a groove structure on both sides of which are existing absorbent 18 sections, forming a guide B made of the absorbent itself. This groove structure guides the flow of urine. In the second embodiment, this groove structure corresponds to the vertical guide. 42 is the horizontal guide B, and as in the first embodiment, the cylindrical section of "Gekiochi-kun" (registered trademark) K00213 manufactured by LEC Corporation was used, appropriately divided and cut.

[0056] Figure 5 is a side view of the pad of the present invention. 46 is the top sheet of the pad of the present invention, which is a sheet that is primarily water-permeable. 47 is the back sheet of the pad of the present invention, which is water-impermeable, and absorbent 18 for absorbing urine is contained between 46 and 47. Guide B 42 already has a certain height near the top end of the pad of the second embodiment. 45 is cellophane tape, which completely closes the opening of the vinyl bag 43 on the back side of the pad of the present invention. The dashed line 45 in Figure 4 represents the cellophane tape.

[0057] In the usage experiment, the pad of the second embodiment was worn in tight pants, and after about two hours, a urination experiment was conducted in a standing position with both feet approximately shoulder-width apart. No urine leakage to the outside of the system was observed during this urination experiment. The weight of the second embodiment after this experiment was 184 grams. Since the initial weight after attaching Guide B, packing tape, etc. was 27 grams, the net weight was 157 grams. Assuming a urine specific gravity of 1, 157 cc was absorbed and captured without leakage to the outside of the system.

[0058] Figure 6 shows an overview of the reaction status of absorbent 18 after removing the top sheet 46 after the experiment. The single-hatched area is the area that has yellowed. Although a white unreacted area remains at the top edge of the pad, almost the entire pad has reacted. The double-hatched area is the area that has yellowed more deeply than the single-hatched area. This suggests the possibility of further urine absorption.

[0059] After the usage experiment, no droplets were found in the plastic bag 43. However, if the amount of urine released increases further, it is possible that some of the urine may directly reach the bottom end of the pad, as in the first embodiment. Therefore, the outer side of guide B (the side opposite to the part (surface) attached to the top sheet 46) and the impermeable guide membrane covering the top sheet 46 may be used.

[0060] Table 4 shows the results of repeated fitting tests using the same configuration as in the second embodiment.

[0061] [Table 4]

[0062] In Example 6, side leakage occurred. Side leakage occurred before the end of the urination test, and because it was a so-called "drizzle," urination could not be stopped midway. While side leakage occurred, the pad was simultaneously absorbing and capturing urine. Therefore, the amount of urine actually absorbed and captured before leakage occurred was less than 212 cc. In addition, the feeling of use here was rated "△" because after the test, the entire lower penis and testicles felt wet.

[0063] The second embodiment has a continuous absorbent-free section 18 within the pad, guiding urine from the top to the bottom without using beads as an obstacle. This structure is simple and advantageous in terms of manufacturing costs. On the other hand, if the wearer's physical condition makes it difficult to keep the urination rate low, the second embodiment can still cause urine leakage if the urine supply rate exceeds the absorption rate of the absorbent 18. Even if the laterally extending guide B 42 spreads urine evenly laterally or spreads urine beyond the beads to the entire underside of the pad, urine leakage can occur. A guide structure with a continuous absorbent-free section 18 is less effective at guiding water away from the pad than other freestanding guides. Furthermore, existing three-dimensional gathers, which are designed to prevent urine leakage from the pad, are ineffective due to the high urine flow rate. Therefore, the second embodiment can be used by clearly indicating the safe absorption capacity as "150cc" and alerting users.

[0064] <Third embodiment> Figures 7 and 8 show a third embodiment of a urine absorption pad according to the present invention. Figure 7 is a plan view of the pad according to the present invention, and Figure 8 shows an overview of the reaction state of the absorbent 18 after a usage experiment of the same pad with the top sheet removed. Note that a side view of the third embodiment is not shown, as it is the same as Figure 2. Reference numeral 50 in Figure 7 denotes a urine absorption pad for men embodying the present invention, and a thin, wide 300cc "Poise (registered trademark) Men's Pad" manufactured by Nippon Paper Crecia Co., Ltd. was used as its base.

[0065] As shown in Fig. 7, the third embodiment is identical to the first embodiment except for the difference in the arrangement of the guides B 112. That is, in the third embodiment, two U-shaped guides B 112 are arranged vertically in parallel. The third embodiment aims to reduce costs by reducing the number of guides B used compared to the first embodiment. The guides B 112 were made from the same cylindrical part of "Gekiochi-kun" (registered trademark) K00213 manufactured by LEC Corporation as in the first embodiment, which was appropriately divided and cut to make use of the cylindrical part.

[0066] In the experiment, the pad of the present invention was worn in tight pants, and after about two and a half hours, a urination experiment was conducted in a standing position with both legs approximately shoulder-width apart. No leakage of urine was observed outside the system during this urination experiment. The weight of the pad of the present invention after this experiment was 245 grams. Since the initial weight after all the guides and other components were attached was 29 grams, the weight of urine was subtracted to 216 grams, and assuming a urine specific gravity of 1, 216 cc was absorbed and captured without leakage outside the system.

[0067] Figure 8 shows an overview of the reaction status of the absorbent 18 after the experiment, with the top sheet 16 removed. The single-hatched area is the area that has yellowed. The double-hatched area is the area that has yellowed more deeply than the single-hatched area. Meanwhile, a small white, unreacted area remains at the top edge of the pad. Area Y in Figure 8 is also a white, unreacted area. This is the result of the flow of urine being obstructed by pressure from both thighs on the pad, preventing the absorbent 18 from reacting with the urine. As is clear from a comparison with Figure 3, this is likely due to the fact that in the first embodiment, guide B 12 extends to the bottom edge of the pad along guide A 11, whereas in the third embodiment, guide B 112 is only curved in a U-shape and does not extend to the bottom edge of the pad.

[0068] In Figure 8, a highly reactive region of absorbent 18, indicated by double hatching, can also be observed on the right side of the center of the pad. Furthermore, partial urine penetration was observed in guide A 111, which is in contact with this portion of the pad. From this, it can be seen that the urine flow attacks this portion, and guide A 111 absorbs a certain amount of urine while blocking leakage of urine outside the system, pushing the urine flow back toward the center of the pad body in the lateral direction, where the absorbent 18 fixes and captures the urine. This is the effect of guide A 111, which is a self-supporting porous body with continuous pores. In other words, it was found that guide A 111 prevents urine from overflowing outside the system.

[0069] After the experiment, the inside of the plastic bag 113 was slightly cloudy. The released urine flowed smoothly over the pad due to guide A 111 and guide B 112, and most of it was captured by the absorbent 18 in the process, and it is possible that some of it reached the bottom end of the pad directly and was then captured by the absorbent 18. In the third embodiment, the flow of urine was obstructed by the pressure of both thighs on the pad, and although region Y was formed, the flow of urine reached the bottom end of the pad, perhaps due to the effect of guide A 111, and the absorbent 18 in this area was utilized.

[0070] Table 5 shows the results of repeated fitting tests using the same configuration as in the third embodiment.

[0071] [Table 5]

[0072] In all cases, there was no leakage of urine outside the system. As with the first embodiment, there was a wet feeling on the lower part of the penis and on the balls that came into contact with the penis. However, there were no particular problems with the feeling of use.

[0073] <Fourth embodiment> 9 and 10 show a fourth embodiment of a urine absorption pad according to the present invention. Fig. 9 is a plan view of the pad according to the present invention, and Fig. 10 is a side view of the pad according to the present invention. Reference numeral 60 in Fig. 9 denotes a urine absorption pad for men embodying the present invention, and a thin, wide, 300cc "Poise (registered trademark) Men's Pad" manufactured by Nippon Paper Crecia Co., Ltd. was used as its base. In the fourth embodiment, guide B 12 in Fig. 1 of the first embodiment is installed between a water-permeable top sheet 16 that contacts the skin and an impermeable back sheet 17 that contacts underwear, and all other configurations are the same as those of the first embodiment.

[0074] The components of the men's urine absorption pad realizing the fourth embodiment are all the same as those of the first embodiment, but there is a difference in the manufacturing method. Specifically, a portion of the water-permeable top sheet 16 is cut open, and three guides B 12 are appropriately inserted between the top sheet 16 and the back sheet 17, and then fixed to the water-permeable top sheet 16 using the double-sided tape described above. The cut-open portion of the water-permeable top sheet 16 is closed by placing and adhering guide A 11 over it using double-sided tape. The manufacturing method of the fourth embodiment is identical to that of the first embodiment except for the above points. In other words, guide B 12 stands free-standing, rising closer to the top sheet 16 than the back sheet 17.

[0075] In the experiment, the pad of the present invention was worn in tight pants, and after about two and a half hours, a urination experiment was conducted in a standing position with both feet approximately shoulder-width apart. No leakage of urine was observed outside the system during this urination experiment. The weight of the pad of the present invention after this experiment was 264 grams. Since the initial weight after all the various guides and other components were attached was 32 grams, the weight of urine was subtracted to 232 grams, and assuming a urine specific gravity of 1, 232 cc was absorbed and captured without leakage outside the system.

[0076] After the experiment, the surface sheet 16 was removed and the reaction state of the absorbent 18 was observed. The yellowed area is not shown because it is roughly the same as in Figure 3. Guide B 12 was located between the surface sheet 16 and the back sheet 17, in the absorbent 18, so the reacted absorbent particles 18 clung to and adhered to the entire surface of Guide B 12.

[0077] Table 6 shows the results of repeated fitting tests using the same configuration as in the fourth embodiment.

[0078] [Table 6]

[0079] In all cases, there was no leakage of urine outside the system. As with the first embodiment, there was a wet feeling on the lower part of the penis and the balls in contact with the penis. However, there were no particular problems with the feel of use. In the first embodiment, the guide B 12 directly touches the skin, whereas in the fourth embodiment, the top sheet 16 is interposed between the guide B 12 and the skin, so we expected there to be a difference in fit. However, there was no noticeable difference.

[0080] Fifth Embodiment 11 to 14 show a fifth embodiment of a urine absorption pad according to the present invention. FIG. 11 is a plan view of the pad according to the fifth embodiment, FIG. 12 is a side view, and FIG. 13 is a side view of another example. Reference numeral 70 in FIG. 11 denotes a urine absorption pad for men embodying the present invention, and uses a thin, wide, 300cc "Poise (registered trademark) Men's Pad" manufactured by Nippon Paper Crecia Co., Ltd. as its base. In the fifth embodiment, instead of providing guide B 12 in FIG. 1 of the first embodiment, a mesh body 212 is provided on a topsheet 16. FIG. 13 shows a state in which the width of mesh body 212 is made larger than the inner width of the pad defined by guide A 211 in the central and lower parts of the pad in the vertical direction, so that the direction of expansion of mesh body 212 is changed by guide A 211, and mesh body 212 stands free-standing higher than guide A 211 (i.e., farther from topsheet 16 than guide A 211). As a result, even if the gap between the pad and the wearer unexpectedly widens for some reason after the pad is put on, it is expected that the mesh body 212 will fill the gap. Figure 14 shows an overview of the reaction of the absorbent 18 after removing the surface sheet 16 after a usage experiment of the same pad.

[0081] The components of the men's urine absorption pad 70 that realizes this embodiment are identical to those of the first embodiment, except for the use of the mesh body 212 as guide B. The mesh body 212 was made by appropriately cutting Asahipen Co., Ltd.'s non-slip mat LFB-60. This product is approximately 3 mm thick and consists of multiple, roughly oblong, oval-shaped synthetic resin foam particles arranged and connected in two directions: longitudinal and lateral. These particles have the ability to absorb water because they are foam with continuous pores. By arranging such mesh body 212 over the entire surface of the top sheet 16, a gap is created between the wearer and the pad, and it is expected that the flow of urine will be guided along the mesh body 212 to the entire surface of the pad. However, unlike the U-shaped, curved guide B 12 of the first embodiment, the mesh body 212 cannot be expected to automatically center the penis downward.

[0082] In the experiment, the pad of the present invention was worn in tight pants, and after about two and a half hours, a urination experiment was conducted in a standing position with both feet approximately shoulder-width apart. No leakage of urine was observed outside the system during this urination experiment. The weight of the pad of the present invention after this experiment was 264 grams. Since the initial weight after all the various guides and other components were attached was 35 grams, the weight of urine was subtracted to 229 grams, and assuming a urine specific gravity of 1, 229 cc was absorbed and captured without leakage outside the system.

[0083] Figure 14 shows an overview of the reaction status of the absorbent 18 after the top sheet 16 was removed after the experiment. The single-hatched area is the area that has yellowed. The double-hatched area is the area that has yellowed more deeply than the single-hatched area. The single-hatched area is somewhat narrow on the underside of the pad, and it is believed that the amount of urine that reached the underside of the pad was less than in the first embodiment. On the other hand, the double-hatched area spreads from the top to the entire center of the pad, and it is believed that most of the urine absorption reaction occurred here. There is a white, unreacted area approximately in the center of the pad. This suggests that urine did not reach the area due to the pressure of the ball, and no urine absorption occurred.

[0084] Table 7 shows the results of repeated fitting tests using the same configuration as in the fifth embodiment.

[0085] [Table 7]

[0086] In Table 5, the feeling of use is rated "△" because after the test, the lower part of the penis and the testicles felt wet.

[0087] Sixth Embodiment 15 to 18 show a sixth embodiment of the urine absorption pad according to the present invention. Unlike the first to fifth embodiments, the sixth embodiment is intended for use in a seated position. When seated, not only the balls but also the thighs exert greater pressure on the pad's upper surface than when standing, which may impede the flow of urine inside and outside the pad. One solution would be to install a guide B on the pad that is rigid enough to withstand pressure, but this could result in a poor user experience. Therefore, the sixth embodiment aims to absorb most of the excreted urine at the front side, which is less susceptible to pressure.

[0088] For this reason, the urine absorption pad according to the sixth embodiment is formed so that the width of the front side is greater than the width of the rear side, as shown in Fig. 15. When the urine absorption pad is oriented to be worn on the wearer's body, the absorbent 18 is disposed over substantially the entire urine absorption pad 80. The portion where the absorbent 18 is disposed is longer in the horizontal direction than in the vertical direction. The amount of absorbent 18 on the front side is greater than that on the rear side. The area where the lower edge of the urine absorption pad 80 intersects with the two-dot chain lines 88, 89 is recessed toward the front.

[0089] Reference numeral 81 denotes guide A, which was made by appropriately cutting "Gekiochi Papa" S-693 manufactured by LEC Corporation into 15 mm square pieces. The guides A of 81 closest to the center line C are spaced about 10 mm apart and fixed to the top surface of the pad with the aforementioned double-sided tape (not shown). The guides A of 81 located at both ends are spaced a few mm apart from the guides A closer to the center line C and are fixed to the top surface of the pad with the aforementioned double-sided tape (not shown), just like the guides A closer to the center line C. This is because when the pad is worn, the pad bends in an approximately W-shape as seen from the wearer's perspective, and the guides A of 81 closest to the center line C interfere with each other, making it difficult to bend, and increasing the gap between the wearer's skin surface and the pad.

[0090] 82 is a guide B, which is made from a cylindrical section of "Gekiochi-kun" (registered trademark) K00213 manufactured by LEC Corporation, approximately 18 mm in diameter, cut into appropriate sections and fixed to the top surface of the pad using the double-sided tape (not shown). This is to spread the flow of urine laterally in front of the pad 80.

[0091] Numeral 83 denotes a food wrap film. This guides urine to prevent leakage from the bottom end of the pad of the present invention if the urine reaches the bottom end in liquid form before being absorbed by the adsorbent, and is fixed to the water-permeable surface sheet 86 by double-sided tape 85 (using the material already described). If the opening of the food wrap film 83 is left free, urine may leak from this opening. For this reason, the center of the opening of the food wrap film 83 is attached to the surface sheet 86 using the double-sided tape 84 already described.

[0092] Figure 16 is a side view of the pad of the present invention taken along the arrow D. 86 is the top sheet of the pad of the present invention, which is primarily water-permeable. 87 is the back sheet of the pad of the present invention, which is water-impermeable. Between sheets 86 and 87, an absorbent 18 for absorbing urine is contained. It can be seen that guide A 81 has a certain height on the top surface of the pad. The two-dot chain lines 88 and 89 in Figure 15 are fold lines that fold due to the constraint of being sandwiched between the legs when worn.

[0093] In Figure 17, 90 is a schematic representation of the pad according to the sixth embodiment shown in Figures 15 and 16, created using a commercially available urine absorption pad. Figure 18 shows the reaction status of the absorbent 18 after the surface sheet 96 was removed from the same pad after a usage experiment. The urine absorption pad 90 was constructed by connecting a first pad 90A (Poise (registered trademark) Men's Pad, thin and wide, 300cc, manufactured by Nippon Paper Crecia Co., Ltd.) and a second pad 90B (Lifree (registered trademark) Men's Refreshing Thin Pad, 120cc, manufactured by Unicharm Corporation) side by side with packing tape. The first pad 90A is assumed to contain the absorbent 18 in an amount sufficient to absorb at least 300cc of urine. The second pad 90B is assumed to contain the absorbent 18 in an amount sufficient to absorb at least 120cc of urine. When the urine absorbent pad 90 is oriented to be worn on the wearer's body, the portion where the absorbent material 18 is arranged is longer horizontally than vertically. The urine absorbent pad 90 aims to absorb most of the urine excreted on the front side (i.e., the upper part 90A of the urine absorbent pad 90) which is less likely to be pressed by the testicles or thighs.

[0094] Therefore, a first pad 90A capable of absorbing approximately 300 cc of urine was used on the top of the pad, and a second pad 90B capable of absorbing approximately 120 cc of urine was used on the bottom of the pad as a complement. The absorbent surfaces of the two pads were attached together and secured with adhesive tape from the backside. The dashed lines in Figure 17 represent the adhesive tape on the backside. 98 are both ends of the adhesive tape, which are folded back to prevent leakage from the seams and partially extend over the top surface of the pad (the side of the topsheet 96).

[0095] Reference numeral 91 denotes guide A, which was made by appropriately cutting "Gekiochi Papa" S-693 manufactured by LEC Corporation into 15 mm square pieces. The guides A 91 closest to the center line C are spaced about 10 mm apart and fixed to the top surface of the pad with the aforementioned double-sided tape (not shown). The guides A 91 located at both ends are spaced a few mm apart from the guides A closer to the center line C and are fixed to the top surface of the pad with the aforementioned double-sided tape (not shown), just like the guides A closer to the center line C. This is because when the pad is worn, it bends in an approximately W-shape as seen from the wearer's perspective, and the guides A 91 closest to the center line C interfere with each other, making it difficult to bend, and increasing the gap between the wearer's skin surface and the pad.

[0096] 92 is a guide B, which is made from a cylindrical section of LEC Corporation's "Gekiochi-kun" (registered trademark) K00213, approximately 18 mm in diameter, cut into appropriate sections and fixed to the top surface of the pad using the double-sided tape (not shown). This is to spread the flow of urine to the left and right on the top surface of the first pad 90A.

[0097] Numeral 93 denotes a food wrap film. This guides urine to prevent leakage from the bottom end of the pad of the present invention if the liquid urine reaches the bottom end before being absorbed by the adsorbent. It is fixed to the top surface of the second pad 90B with double-sided tape 95 (using the same tape as described above). If the opening of the food wrap film 93 is left free, urine may leak from this opening. Therefore, the center of the opening of the food wrap film 93 is attached to the top surface of the second pad 90A using the double-sided tape 94 described above. The two-dot chain lines 99 and 100 indicate the fold lines along which the pad will bend when it is held between the legs when worn. The total weight of the urine absorbent pad 90 of the sixth embodiment of the present invention, equipped with these features, was 48 grams.

[0098] The experiment involved wearing the urine absorbent pad 90 in tight-fitting pants for approximately two hours, then sitting on the lid of a Western-style toilet with the feet approximately shoulder-width apart and conducting a urination experiment. The pad of the sixth embodiment was worn with guide A 91 aligned horizontally with the wearer and positioned at the top. In other words, the urine absorbent pad 90 was worn on the wearer with the orientation of the first pad 90A and the second pad 90B intersecting the orientation when the first pad 90A and the second pad 90B were used alone.

[0099] In this urination experiment, no leakage of urine outside the system was observed. The weight of the sixth embodiment after this experiment was 255 grams. Since the initial total weight was 48 grams, the subtracted weight was 207 grams, and assuming a urine specific gravity of 1, 207 cc was absorbed and captured without leakage outside the system.

[0100] Figure 18 shows an overview of the reaction status of absorbent 18 after removing the top sheet of 96 after the experiment. The single-hatched areas are yellowed areas. The yellowed areas continue continuously from the first pad of 90A to the second pad of 90B. The double-hatched areas are areas that are darker in yellow than the single-hatched areas. A white, unreacted area remains above the first pad of 90A, which may indicate further urine absorption.

[0101] After the use experiment, no droplets were found in the food wrap film 93. However, if the amount of urine released increases, it is possible that some of the urine may directly reach the lower end of the second pad 90B, as in the first embodiment. Therefore, an impermeable guide membrane may be provided to cover the entire top sheet 96 of the second pad 90B.

[0102] Table 8 shows the results of repeated wearing tests using the same configuration as in embodiment 6.

[0103] [Table 8]

[0104] In Table 6, the feeling of use is rated "△" because after the test, the lower part of the penis and the testicles felt wet.

[0105] In the 90 urine absorption pad, when it is worn on the wearer's body, the portion where the absorbent material 18 is gathered is longer horizontally than vertically. With this configuration, even if the wearer is in a seated position and the flow of urine behind the beads is blocked by pressure from the beads, the majority of the urine absorbing portion is located in front of the beads, so the entire amount of urine can be absorbed without leakage outside the system.

[0106] <Form of existing commercially available pads> Figure 19 is an overview of the urine absorption status of an existing commercially available urine absorption pad for men. It corresponds to a comparative example. For the experiment using an existing commercially available pad, a thin, wide 300cc "Poise (registered trademark) Men's Pad" manufactured by Nippon Paper Crecia Co., Ltd. was attached to tight-fitting pants, and after about two and a half hours, a urination experiment was conducted in a standing position with both feet spread approximately shoulder-width apart.

[0107] Halfway through the urination test, urine began to leak out of the system. As mentioned above, urination could not be interrupted, so after all urine was released, the pad was removed and weighed, which was 122 grams. The pad's weight before use was 25 grams, so the net weight was 97 grams, and assuming a urine specific gravity of 1, 97 cc of urine was captured. As shown in Figure 19, when observing the state of urine absorption, the single-hatched areas are the yellowed areas, and the double-hatched areas are the areas that were more deeply yellowed. Furthermore, the arrows indicate the path that is thought to have taken place overflowing from the pad.

[0108] Existing commercially available pads have poor circulation of urine within the pad. Also, existing commercially available pads do not have the function to correct uneven urination, so urine absorption is unevenly distributed, and instead of spreading to other areas that still have urine absorption capacity, when the absorption capacity of the area where urine absorption is unevenly distributed reaches its limit, the urine overflows, leading to urine leakage.

[0109] The present invention is not limited to the embodiments described above and illustrated in the drawings, and the following embodiments, for example, are also included within the technical scope. (1) In the fifth embodiment, the material of the guide B is different from that of the guide B in the first to fourth embodiments and the sixth embodiment. However, this is not a limitation, and the material of the guide B in the fifth embodiment may be used in combination with the material of the guide B in the first to fourth embodiments and the sixth embodiment. Furthermore, the material of the guide B is not limited to that used in this embodiment, and other materials may be used for the guide B. Furthermore, the material of the guide A is not limited to that used in this embodiment, and other materials may be used for the guide A. (2) Guide A and Guide B with double-sided tape attached may be attached to a commercially available urine absorbent pad. In other words, Guide A and Guide B can be attached freely to the surface of the top sheet of the urine absorbent pad that contacts the wearer's skin, allowing urine to penetrate and rise from the top sheet toward the wearer's skin, thereby controlling the flow of urine. This configuration allows the attachment positions of Guide A and Guide B to be adjusted according to the wearer's physical condition, thereby not only allowing for better urine absorption compared to commercially available urine absorbent pads, but also allowing the wearing feel to be adjusted to suit the wearer's preferences. (3) The mesh body in the fifth embodiment is made up of a plurality of roughly oblong spheroidal particles of synthetic resin foam that are aligned and connected in two directions, the longitudinal direction and the lateral direction, but the configuration of the mesh body is not limited to this. [Explanation of symbols]

[0110] 10...First embodiment 11, 81, 91, 111, 211...Guide A (Guide) 12, 42, 82, 92, 112, 212...Guide B (Guide) 13, 43, 113, 213...Plastic kitchen bags 14, 44, 84, 94, 114, 214...Double-sided tape 15, 45, 85, 95, 115, 215...Cellophane tape 16,46,86,96...Surface sheet 17,47,87...Back sheet 18...Absorbent 40...Second embodiment 50...Third embodiment 60...Fourth embodiment 70...Fifth embodiment 80, 90...Sixth embodiment 90A...1st pad 90B...Second pad 83,93...Food wrap film 88,98...Duct tape folded part 212...Mesh body (Guide B)

Claims

1. a water-permeable surface sheet that contacts the skin; a water-impermeable back sheet that contacts the underwear; an absorbent sandwiched between the top sheet and the back sheet to absorb urine that has permeated the top sheet; A guide that extends horizontally to guide urine, Equipped with The guide is attached to the surface of the top sheet facing the skin, and stands upright on its own from the surface facing the skin. The guide allows urine that has permeated the guide from above to flow so as to spread laterally inside the guide, and then pass through the guide vertically so as to be absorbed by the absorbent material located below the guide. The absorbent absorbs 150 cc to 200 cc of urine at a time.

2. 2. The urine absorbent pad according to claim 1, wherein the guide is disposed above the center of the absorbent in the longitudinal direction.

3. 3. The urine absorbent pad according to claim 1, wherein the guide does not include the absorbent material.

4. 3. The urine absorbent pad according to claim 1, wherein the guide is made up of entangled fibers only.

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