underwear

Abstract

To provide underwear that improves urine retention without using a highly absorbent polymer. [Solution] The underwear of the present invention comprises a placket 2 extending from the user's lower abdomen toward the buttocks, and a body connected to the placket, the placket comprising a placket body, a lining 6 provided on the side of the placket body facing the user's body, multiple pieces of absorbent fabric provided between the placket body and the lining, and a water-repellent fabric provided between the placket body and the absorbent fabric, the lining and the absorbent fabric being sewn together by a longitudinal seam 81 extending along the longitudinal direction at the widthwise center of the placket, and a cross seam 82 crossing the longitudinal seam.

Description

[Technical Field]

[0001] This invention relates to underwear for men who suffer from mild incontinence or urinary incontinence. [Background technology]

[0002] BACKGROUND ART Conventionally, many men have suffered from residual urine leakage after urination and slight incontinence, and underwear for addressing such urinary leakage and slight incontinence has been known.

[0003] For example, Patent Document 1 discloses a diaper that is provided with a padded section that absorbs urine and is sewn from the inside of the front body to the back body at a location that comes into close contact with the crotch area. Furthermore, Patent Document 2 discloses an underwear that has a placket made up of a front placket and a back placket, and in which, when viewed from the ventral side in a plan view when placed on a flat surface, the front placket and the back placket are not sewn together between approximately the center of the men's underwear and the seam between the placket and the back body. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Utility Model Registration No. 3236971 [Patent Document 2] Japanese Patent Application Laid-Open No. 2014-114517 Summary of the Invention [Problem to be solved by the invention]

[0005] Incidentally, conventional underwear often uses superabsorbent polymers (SAPs) to improve the amount of absorbed urine they can retain. However, underwear using such superabsorbent polymers has problems, such as being very difficult to dry after washing. Therefore, the object of the present invention is to provide underwear that can improve urine retention without relying on superabsorbent polymers. [Means for solving the problem]

[0006] The present invention solves the above-mentioned problems and provides underwear comprising a placket extending from the user's lower abdomen toward the buttocks and a body connected to the placket, wherein the placket comprises a placket body, a lining provided on the side of the placket body facing the user's body, multiple pieces of absorbent fabric provided between the placket body and the lining, and a water-repellent fabric provided between the placket body and the absorbent fabric, and the lining and the absorbent fabric are sewn together by a longitudinal seam extending along the longitudinal direction at the center of the width of the placket and a cross seam that intersects the longitudinal seam.

[0007] In addition, the present invention provides underwear in which the placket has a peripheral fabric along the peripheral edges of the lining and the absorbent fabric, one end of the peripheral fabric being sewn along the peripheral edges of the lining and the absorbent fabric and the other end being sewn to the body.

[0008] In addition, the present invention provides underwear in which the water-repellent fabric is not sewn to the lining and the water-absorbent fabric by the longitudinal seams and the cross seams.

[0009] The present invention also provides underwear characterized in that the absorbent fabric comprises a first absorbent fabric and a second absorbent fabric that is layered on the first absorbent fabric and has lower moisture diffusion properties than the first absorbent fabric.

[0010] The present invention also provides underwear characterized in that the second absorbent fabric has higher water retention than the first absorbent fabric.

[0011] The present invention also provides underwear characterized in that the second absorbent fabric has a lower return rate than the first absorbent fabric.

[0012] The present invention also provides underwear characterized in that the absorbent fabric comprises two pieces of the first absorbent fabric and two pieces of the second absorbent fabric, with the first absorbent fabric and the second absorbent fabric arranged alternately one by one.

[0013] The present invention also provides underwear characterized in that the absorbent fabrics are arranged in the following order from the lining side: the first absorbent fabric, the second absorbent fabric, the first absorbent fabric, and the second absorbent fabric.

[0014] The present invention also provides underwear characterized in that the longitudinal seams and the cross seams are sewn to the surface of the lining to form a cross, and the longitudinal seams have a longer length in the stretch direction than the cross seams.

[0015] The present invention also provides underwear characterized in that the cross-sewn portions intersect below the center of the longitudinal seams in the longitudinal direction.

[0016] The present invention also provides underwear characterized in that the underwear has a waist portion and a hem portion, the waist portion is provided with a waist elastic, and the placket has an upper edge portion that follows the waist elastic, a lower edge portion that faces the upper edge portion, side edge portions that extend from the upper edge portion to the hem portion, and lower side edge portions that extend from the lower end of the side edge portions along the hem portion to the bottom edge portion.

[0017] In addition, the present invention is an underwear characterized in that the surrounding fabric sewn to the lower edge portion is sewn to the lower end of the body on the buttocks side of the user's perineum.

[0018] The present invention also provides underwear characterized in that the lining has higher moisture diffusion properties than the first absorbent fabric.

[0019] The present invention also provides underwear characterized in that the first absorbent fabric is a pile fabric and the second absorbent fabric is a nonwoven fabric that does not contain superabsorbent polymers. [Effects of the Invention]

[0020] The underwear according to the present invention can improve urine retention without relying on superabsorbent polymers. [Brief explanation of the drawings]

[0021] [Figure 1] 1A is a front view of the underwear according to the present embodiment, and FIG. 1B is a back view of the underwear according to the present embodiment. [Figure 2] FIG. 1 is a front view showing the underwear according to the present embodiment in an inside-out state. [Figure 3] FIG. 2 is an exploded view showing each component of the placket of the underwear according to the present embodiment. [Figure 4] FIG. 4 is a cross-sectional view taken along line IV-IV of FIG. [Figure 5] FIG. 2 is a cross-sectional view of FIG. 1 . [Figure 6] FIG. 2 is a vertical central cross-sectional view of the underwear according to the present embodiment. [Figure 7] FIG. 2 is an enlarged view showing the placket of the underwear according to the present embodiment from the back side. [Figure 8] 1A and 1B are cross-sectional views taken along the seam direction of the longitudinal sewn portion of the placket of the underwear according to the present embodiment, respectively, and are cross-sectional views perpendicular to the seam direction of the longitudinal sewn portion of the placket of the underwear according to the present embodiment. [Figure 9] 10A and 10B are diagrams showing the relationship of moisture flow along longitudinal seams or cross seams of the placket of the underwear according to the present embodiment. [Figure 10] 10A and 10B are diagrams showing the diffusion and penetration of moisture in the placket of the underwear according to the present embodiment. [Figure 11] 11(a) is a diagram showing a first step in the process of manufacturing the placket of the underwear according to the present embodiment, and FIG. 11(b) is a cross-sectional view taken along the line XIb-XIb of FIG. [Figure 12] 12(a) is a diagram showing a second step in the process of manufacturing the placket of the underwear according to the present embodiment, and FIG. 12(b) is a cross-sectional view taken along the line XIIb-XIIb of FIG. [Figure 13] 13(a) is a diagram showing a third step in the process of manufacturing the placket of the underwear according to the present embodiment, and FIG. 13(b) is a cross-sectional view taken along the line XIIIb-XIIIb of FIG. [Figure 14]14(a) is a diagram showing a fourth step in the process of manufacturing the placket of the underwear according to the present embodiment, and FIG. 14(b) is a cross-sectional view taken along the line XIVb-XIVb of FIG. [Figure 15] 1(a) is a cross-sectional view of a first modified example of the underwear according to the present embodiment, and FIG. 1(b) is a cross-sectional view of a second modified example of the underwear according to the present embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0022] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings, but the present invention is not limited to these embodiments.

[0023] <Basic composition of underwear 1> Fig. 1(a) is a front view of the underwear 1 of this embodiment, Fig. 1(b) is a back view of the underwear 1 of this embodiment, and Fig. 2 is a front view of the underwear 1 of this embodiment turned inside out. Fig. 3 shows the fabrics of the placket 2 before cutting and sewing, arranged in the order in which they will be placed from the front side (upper right of the drawing) to the back side (lower left of the drawing) of the underwear 1. First, the overall configuration of the underwear 1 of this embodiment will be described with reference to Figures 1(a), 1(b), 2, and 3. In the following description, the upper and lower sides of the underwear 1 of this embodiment will be defined by the directions of the arrows shown in Figure 1, i.e., the up-down directions in Figures 1(a) and 1(b).

[0024] As shown in Figure 1(a), the underwear 1 of the present invention comprises a placket 2 provided at the front center so as to cover a man's private parts, a body 11 connected to both side edges 22, 23 and a bottom edge 24 of the placket 2 to cover the waist, and a waist elastic 12 connected to the top edge 21 of the placket 2 and the top end of the body 11. Note that, although the body 11 in this embodiment is made from a single piece of fabric, the body 11 may also be formed by joining multiple pieces of fabric together.

[0025] 1(a) and 1(b), the placket 2 of this embodiment extends from the user's lower abdomen toward the buttocks. That is, the lower edge portion 24 of the placket 2 is formed to be located on the buttocks side of the user. In addition, a part of the lower part of the placket 2, specifically, the lower side edges 221, 231 connecting the side edges 22, 23 and the lower edge portion 24, are sewn along the hem 13.

[0026] As shown in FIG. 3, the placket 2 includes a placket main body 3, a water-repellent intermediate fabric 4, a water-absorbent fabric 5, a lining 6, and a water-repellent peripheral fabric 7. The placket main body 3 of this embodiment includes an upper placket 31 and a lower placket 32. The water-absorbent fabric 5 of this embodiment includes two first water-absorbent fabrics 51a, 51b and two second water-absorbent fabrics 52a, 52b. The water-repellent peripheral fabric 7 includes four water-repellent peripheral fabrics 71, 72, 73, and 74. In this specification, the term "front side" refers to the side of the underwear 1 that faces the outside when worn by a user, and the term "back side" refers to the side of the underwear 1 that faces the body of the user. Note that the terms "front side" and "back side" do not necessarily correspond to the front and back surfaces of the fabrics that constitute each component.

[0027] 2, the central portion of the lining 6 is provided with a longitudinal sewn portion 81 extending in the longitudinal direction and a cross-sewn portion 82 extending in the horizontal direction so as to cross the longitudinal sewn portion 81. The longitudinal sewn portion 81 and the cross-sewn portion 82 sew together the lining 6, the first absorbent fabrics 51a, 51b, and the second absorbent fabrics 52a, 52b.

[0028] The upper placket 31 has a portion on its side (the side of the side 23 in Figure 1(a)) that is not sewn to the body 11. The area of ​​this side 23 of the upper placket 31 that is not sewn to the body 11 forms an opening 25 through which the male genitalia can be inserted and removed. In addition, the lower placket 32 ​​has a portion on its side opposite the side 23 of the placket 2 (the side 22 in Figure 2) that is not sewn to the body 11. The area of ​​this side 22 of the lower placket 32 ​​that is not sewn to the body 11 forms an opening 26 through which the male genitalia can be inserted and removed. These openings 25 and 26 are connected to each other.

[0029] <Components of the front plate 2> 3, when viewed from the outside of the underwear 1, the placket 2 of this embodiment is arranged in the following order: upper placket 31, lower placket 32, water-repellent intermediate fabric 4, second water-absorbent fabric 52b, first water-absorbent fabric 51b, second water-absorbent fabric 52a, first water-absorbent fabric 51a, and lining 6. Furthermore, water-repellent peripheral fabrics 71, 72, 73, and 74 are arranged along each side of the lining 6, first water-absorbent fabrics 51a and 51b, and second water-absorbent fabrics 52a and 52b. Each part will be described below.

[0030] As shown in FIG. 3 , the upper placket 31 has its left and right side edges curved inward. That is, the upper placket 31 is narrower at its center than at its top and bottom. More specifically, the upper placket 31 has a side edge 315 recessed toward the center of the fabric surface of the upper placket 31 on one side edge connecting the upper edge 311 and the lower edge 314. The upper placket 31 also has a side edge 312 and a side edge 313 recessed toward the center of the fabric surface of the upper placket 31 on the other side edge opposite the side edge 315. The upper placket 31 is not sewn to the body 11 at the side edge 313, and the opening 25 of the placket 2 is formed between the side edge 313 and the lower placket 32. In this embodiment, the upper placket 31 is made of the same fabric as the body 11.

[0031] The lower placket 32 ​​is roughly symmetrical to the upper placket 31, with both left and right side edges curved inward. That is, the lower placket 32 ​​is narrower at its center than at its top and bottom. More specifically, the lower placket 32 ​​has a side edge 322 recessed toward the center of the fabric surface of the lower placket 32 ​​on one side edge connecting the upper edge 321 and lower edge 323, and a side edge 325 and a side edge 324 recessed toward the center of the fabric surface of the lower placket 32 ​​on the other side edge opposite the side edge 322. The lower placket 32 ​​is not sewn to the body 11 at the side edge 324, and the opening 26 of the placket 2 is formed between the side edge 324 and the upper placket 31. The side edge 324 of the lower placket 32 ​​is formed on the side edge opposite the side edge 313 of the upper placket 31. In addition, the lower placket 32 ​​of this embodiment is formed from the same fabric as the body 11.

[0032] The water-repellent intermediate fabric 4 has substantially the same shape as the lower placket 32, with the left and right side edges curved inward. That is, the water-repellent intermediate fabric 4 is narrower in the center than at the top and bottom. More specifically, the water-repellent intermediate fabric 4 has a side edge 42 recessed toward the center of the surface of the water-repellent intermediate fabric 4 on one side edge connecting the upper edge 41 and lower edge 43, and has a side edge 45 and a side edge 44 recessed toward the center of the surface of the water-repellent intermediate fabric 4 on the other side edge opposite the side edge 42. The water-repellent intermediate fabric 4 is not sewn to the body 11 at the side edge 44.

[0033] The first absorbent fabrics 51a, 51b and the second absorbent fabrics 52a, 52b are each substantially identical in shape, with the left and right side edges curved inward. That is, the first absorbent fabrics 51a, 51b and the second absorbent fabrics 52a, 52b are narrower in the center than in the top and bottom. More specifically, the left and right sides connecting the upper edges 511, 521 and the lower edges 513, 523 have side edges 512, 514, 522, 524 that are recessed toward the center of the fabric surface of the first absorbent fabrics 51a, 51b and the second absorbent fabrics 52a, 52b.

[0034] The lining 6 is formed to have substantially the same shape as the first absorbent fabrics 51a, 51b and the second absorbent fabrics 52a, 52b. The lining 6 has inwardly curved side edges 62, 64 on the left and right sides connecting the upper edge 61 and the lower edge 63. That is, the lining 6 is narrower at the center than at the top and bottom. More specifically, the left and right sides connecting the upper edge 61 and the lower edge 63 have side edges 62, 64 that are recessed toward the center of the lining 6 fabric surface.

[0035] The water-repellent peripheral fabrics 71, 72, 73, and 74 are provided along each side of the lining 6 to which they are sewn. The water-repellent peripheral fabrics 71, 72, 73, and 74 are formed in strips of a predetermined width. That is, the water-repellent peripheral fabrics 71 and 72 are formed in strips that curve along the side edges 62 and 64 of the lining 6 to which they are sewn, with lengths that are approximately the same as the lengths of the side edges 62 and 64. The water-repellent peripheral fabric 73 is formed in a straight strip with a length that is approximately the same as the sum of the top edge 61 of the lining 6 and the top edges 712 and 724 of the water-repellent peripheral fabrics 71 and 72. The water-repellent peripheral fabric 74 is formed in a straight strip with a length that is approximately the same as the sum of the bottom edge 63 of the lining 6 and the bottom edges 714 and 722 of the water-repellent peripheral fabrics 71 and 72.

[0036] <Water-absorbent fabric 5 material> The first absorbent fabrics 51a, 51b and the second absorbent fabrics 52a, 52b are both made of fabrics with a predetermined water absorption rate. Here, "water absorption rate" is an index that indicates how much water a fabric can absorb. In other words, a high water absorption rate indicates that the fabric can absorb more water. The absorption rate may be expressed in comparison with the weight of the target fabric. In other words, if the fabric can absorb the same weight as the target fabric, the absorption rate may be expressed as 1x. The first absorbent fabrics 51a, 51b and the second absorbent fabrics 52a, 52b have similar water absorption rates, or the second absorbent fabrics 52a, 52b have relatively higher water absorption rates than the first absorbent fabrics 51a, 51b. More specifically, the first absorbent fabrics 51a, 51b and the second absorbent fabrics 52a, 52b preferably have water absorption rates of 300 to 1000% (3 to 10 times their own weight) or more.

[0037] The first absorbent fabrics 51a, 51b and the second absorbent fabrics 52a, 52b differ from each other in terms of moisture diffusion rate, moisture retention rate, and moisture return rate. Here, "moisture diffusion rate" is an index that indicates how easily water spreads when a certain amount of water is dropped onto a fabric. The higher the moisture diffusion rate, the faster moisture absorbed into the fabric diffuses. Furthermore, the higher the moisture diffusion rate, the larger the area over which moisture spreads within the fabric over time. Furthermore, "moisture retention rate" is the ratio that indicates how much moisture absorbed by the fabric is retained relative to its dry mass. The higher the moisture retention rate, the greater the amount of moisture the fabric can retain. Furthermore, "return rate" is an index that indicates the rate at which moisture once absorbed into the fabric returns to the surface. The higher the return rate, the greater the amount of moisture once absorbed into the fabric returns to the surface, which is more likely to cause "stickiness" and "discomfort."

[0038] The first absorbent fabrics 51a and 51b are made of fabrics with a relatively high moisture diffusion rate compared to the second absorbent fabrics 52a and 52b. That is, when a certain amount of water is dropped, the first absorbent fabrics 51a and 51b diffuse the moisture faster and over a wider area than the second absorbent fabrics 52a and 52b.

[0039] Furthermore, the second absorbent fabrics 52a and 52b are made of fabrics with a relatively higher water retention rate than the first absorbent fabrics 51a and 51b, i.e., the second absorbent fabrics 52a and 52b can retain a greater amount of water relative to their dry weight than the first absorbent fabrics 51a and 51b.

[0040] Furthermore, the second absorbent fabrics 52a and 52b are made of fabric with a relatively low return rate compared to the first absorbent fabrics 51a and 51b. That is, the second absorbent fabrics 52a and 52b have a lower rate of moisture returning to the surface once absorbed than the first absorbent fabrics 51a and 51b.

[0041] The first absorbent fabrics 51a and 51b in this embodiment are made of a water-retentive pile fabric such as cotton. As the material for the first absorbent fabrics 51a and 51b, in addition to natural fibers such as cotton, absorbent fibers such as regenerated cellulose fibers such as cupra and viscose rayon, and synthetic fibers such as water-absorbent polyester can be used. Furthermore, suitable knit fabrics include rib knitting, smooth knitting, and even weft knitting such as jersey knitting, and warp knitting such as raschel knitting.

[0042] The second absorbent fabrics 52a and 52b in this embodiment are nonwoven fabrics, more preferably nonwoven fabrics that have been hydrophilically treated. Specifically, absorbent fibers such as regenerated cellulose fibers (e.g., cupra and viscose rayon) and synthetic fibers (e.g., water-absorbent polyester) can be used. The second absorbent fabrics 52a and 52b in this embodiment are characterized by not containing superabsorbent polymers. Since the second absorbent fabrics 52a and 52b do not contain superabsorbent polymers, the drying time after washing can be shortened.

[0043] In addition, the second absorbent fabrics 52a and 52b in this embodiment are each formed of two layers: a permeable layer that allows moisture to easily pass through and a diffusion layer that allows moisture to easily diffuse along the surface of the fabric. As a result, moisture passes through the permeable layer, is absorbed into the diffusion layer, and is widely diffused in the diffusion layer. This wide diffusion in the diffusion layer reduces the proportion of moisture returning from the permeable layer.

[0044] The second absorbent fabrics 52a, 52b may also contain acrylic fibers that retain silver ions. This allows the second absorbent fabrics 52a, 52b to have antibacterial and deodorizing properties. Furthermore, the second absorbent fabrics 52a, 52b may also contain acrylate fibers. This allows the second absorbent fabrics 52a, 52b to have the ability to neutralize odorous components such as ammonia.

[0045] <Lining 6 material> The lining 6 of this embodiment is made of a material that has excellent moisture diffusion properties and prevents backflow. Specifically, the lining 6 is made of a fabric with a relatively high moisture diffusion rate compared to the first absorbent fabrics 51a and 51b. Furthermore, the lining 6 is made of a fabric with an equivalent or relatively low backflow rate compared to the second absorbent fabrics 52a and 52b. That is, the lining 6 has the property of quickly absorbing moisture and diffusing it over a wider area of ​​the fabric, with little backflow. This allows the lining 6 to maintain a dry feel against the skin, reducing discomfort, even if urine drips onto the placket 2 due to residual urine leakage or slight incontinence after urination.

[0046] <Materials of the water-repellent intermediate fabric 4 and the water-repellent peripheral fabric 7> In this embodiment, the water-repellent intermediate fabric 4 and the water-repellent peripheral fabric 7 are made of the same material. Specifically, water-repellent fabrics whose surfaces are coated with silicone or fluorine can be used. Water-repellent synthetic fabrics can also be used, and knit fabrics such as rib knits, smooth knits, and even weft knits such as jersey knits and warp knits such as raschel knits can be used. In particular, polyester ester smooth fabrics, which have minimal surface irregularities and are smooth and comfortable to the touch, are preferably used. Among such ester smooth fabrics, tightly knitted fabrics and fabrics with a high density make them less susceptible to moisture and dirt, and adding water-repellent properties also contributes to maintaining durability.

[0047] <How to sew placket 2> Next, the layer structure and sewing method of the placket 2 of this embodiment will be described with reference to Figures 4 to 6. Figure 4 shows a cross section taken along line IV-IV in Figure 1(a), Figure 5 shows a cross section taken along line VV of the opening 25 in Figure 1(a), and Figure 6 shows a cross section of the vertical center of the underwear 1. In Figures 4 and 5, the upper side of the body 11 represents the back side of the underwear 1 (the side facing the user's body), and the lower side represents the front side (outside) of the underwear 1.

[0048] 4 to 6, the placket 2 of this embodiment is arranged so that, from the front side to the back side of the underwear 1, the upper placket 31, the lower placket 32, the water-repellent intermediate fabric 4, the second water-absorbent fabric 52b, the first water-absorbent fabric 51b, the second water-absorbent fabric 52a, the first water-absorbent fabric 51a, and the lining 6 are layered. Then, along the back side of each side of the lining 6, water-repellent peripheral fabrics 71, 72, 73, and 74 are arranged.

[0049] As described above, in the placket 2 of this embodiment, two first absorbent fabrics 51a, 51b and two second absorbent fabrics 52a, 52b are arranged alternately. That is, the two first absorbent fabrics 51a, 51b do not overlap each other, and the two second absorbent fabrics 52a, 52b do not overlap each other. The first absorbent fabric 51a is arranged closest to the user's body, and the second absorbent fabric 52b is arranged farthest from the body. In this way, by arranging the first absorbent fabrics 51a, 51b, which have a high moisture diffusivity, closer to the user's body, urine absorbed from the lining 6 can be more quickly diffused. Furthermore, by arranging the second absorbent fabrics 52a, 52b, which have a high moisture retention rate, closer to the user's body, urine can be prevented from seeping out toward the user's body.

[0050] In the placket 2 of this embodiment, the upper placket 31, the lower placket 32, and the water-repellent intermediate fabric 4 are each directly sewn to the body 11. Meanwhile, the first water-absorbent fabrics 51a, 51b and the second water-absorbent fabrics 52a, 52b, along with the lining 6, are indirectly sewn to the body 11 via the water-repellent peripheral fabrics 71, 72, 73, 74. In this way, by indirectly sewing the first water-absorbent fabrics 51a, 51b and the second water-absorbent fabrics 52a, 52b to the body 11 via the water-repellent peripheral fabrics 71, 72, 73, 74, seepage from the first water-absorbent fabrics 51a, 51b and the second water-absorbent fabrics 52a, 52b into the body 11 can be suppressed.

[0051] Next, with reference to Figure 4, we will explain how to sew the placket 2 and the body 11 above the opening 25 (part IV-IV in Figure 1(a)). As shown in Figure 4, the side edges 312, 322, 42, 315, 325, 45 of the upper placket 31, lower placket 32, and water-repellent intermediate fabric 4 are sewn along the edges 111, 112 on the back side of the body 11, respectively (sewing portions 101, 102).

[0052] One side edge 713 of the water-repellent peripheral fabric 71 is sewn to the back edge 111 of the body 11 together with the side edges 312, 322, 42 of the upper placket 31, the lower placket 32, and the water-repellent intermediate fabric 4 (seamed portion 101). The other side edge 711 of the water-repellent peripheral fabric 71 is sewn to the lining 6 along the side edges 62, 512, 522 of the first water-absorbent fabrics 51a, 51b, and the second water-absorbent fabrics 52a, 52b (seamed portion 103).

[0053] One side edge 723 of the water-repellent peripheral fabric 72 is sewn to the back edge 112 of the body 11 along with the side edges 315, 325, 45 of the upper placket 31, the lower placket 32, and the water-repellent intermediate fabric 4 (seamed portion 102). The other side edge 721 of the water-repellent peripheral fabric 72 is sewn to the lining 6 along the side edges 64, 514, 524 of the first water-absorbent fabrics 51a, 51b, and the second water-absorbent fabrics 52a, 52b (seamed portion 104).

[0054] Next, with reference to FIG. 5, we will explain how to sew the placket 2 and the body 11 together in the area where the openings 25, 26 are provided (the VV area in FIG. 1(a)). As shown in FIG. 5, the upper placket 31 is not sewn to the body 11 at the sewn area 101. More specifically, the side edge portions 313 of the upper placket 31 are not sewn to the body 11 and form free ends. A binder B2 is provided on this side edge portion 313 so as to sandwich the side edge portion 313 from the front and back. Furthermore, the upper placket 31 and the lower placket 32 ​​are not sewn together and are provided so as to be separable from each other. An opening 25 on the upper placket 31 side and an opening 26 on the lower placket 32 ​​side are thus formed.

[0055] In the portion of the lower placket 32 ​​where the opening 26 is provided, each of the side edges 324, 44, 723 of the lower placket 32, the water-repellent intermediate fabric 4, and the water-repellent peripheral fabric 72 is not sewn to the body 11 and forms a free edge. A binder B1 is sewn to each of the side edges 324, 44, 723 of the lower placket 32, the water-repellent intermediate fabric 4, and the water-repellent peripheral fabric 72 so as to sandwich them from the front and back while they are overlapped.

[0056] Next, with reference to Figure 6, we will explain how to sew the placket 2 to the waist elastic 12, and how to sew the placket 2 to the lower end 113 on the buttocks side of the body 11. Here, "buttocks side" means the side closer to the buttocks of the wearer than the lowest end 27 of the underwear 1. As shown in Figure 6, the upper side portions 311, 321, 41 of the upper placket 31, the lower placket 32, and the water-repellent intermediate fabric 4 are sewn along the vicinity of the lower end of the waist elastic 12 (sewn portion 105).

[0057] The upper edge portion 733 of the water-repellent peripheral fabric 73 is sewn to the upper edge portions 41, 321, 311 of the water-repellent intermediate fabric 4, the lower front placket 32, and the upper front placket 31, along the vicinity of the lower end of the waist elastic 12 (seamed portion 105). In addition, the lower edge portion 731 of the water-repellent peripheral fabric 71 is sewn to the lining 6, the first water-absorbent fabrics 51a, 51b, and the second water-absorbent fabrics 52a, 52b, along the upper edge portions 61, 511, 521 (seamed portion 106).

[0058] Additionally, the lower edge portions 314, 323, 43 of the upper placket 31, the lower placket 32, and the water-repellent intermediate fabric 4 are sewn along the lower end portion 113 on the buttocks side of the body 11 (sewing portion 108). The lower edge portion 743 of the water-repellent peripheral fabric 74 is sewn along the lower end portion 113 of the body 11 together with the lower edge portions 43, 323, 314 of the water-repellent intermediate fabric 4, the lower placket 32, and the upper placket 31 (sewing portion 108). Additionally, the upper edge portion 741 of the water-repellent peripheral fabric 74 is sewn along the lower edge portions 63, 513, 523 of the lining 6, the first water-absorbent fabrics 51a, 51b, and the second water-absorbent fabrics 52a, 52b (sewing portion 107).

[0059] The lining 6, the first absorbent fabric 51a, the second absorbent fabric 52a, the first absorbent fabric 51b, and the second absorbent fabric 52a are sewn together not only at their sides but also at their centers. That is, as shown in FIG. 5 , they are sewn together at the center of the width direction of each fabric by a longitudinal seam 81. The longitudinal seam 81 sews the lining 6 and the four absorbent fabrics 5 together, but does not sew the water-repellent intermediate fabric 4, the lower placket 32, or the upper placket 31. That is, the longitudinal seam 81 sews together only the multiple layers of the laminate formed by the lining 6, the first absorbent fabric 51a, the second absorbent fabric 52a, the first absorbent fabric 51b, the second absorbent fabric 52b, the water-repellent intermediate fabric 4, the lower placket 32, and the upper placket 31 that face the user's body.

[0060] In addition to the longitudinal seams 81, as shown in FIG. 6, the lining 6, the first absorbent fabric 51a, the second absorbent fabric 52a, the first absorbent fabric 51b, and the second absorbent fabric 52b are sewn together at their lower parts by cross-sewn seams 82. The cross-sewn seams 82 sew the lining 6 and the four absorbent fabrics 5 together, but do not sew the water-repellent intermediate fabric 4, the lower front placket 32, or the upper front placket 31. The cross-sewn seams 82 are positioned below the male genitalia when worn. Furthermore, when worn, the upper end 811 of the longitudinal seams 81 is positioned at the user's lower abdomen, and the lower end 812 is positioned below the user's perineum. Note that the "perineum" here refers to the area between the male genitalia and the anus.

[0061] <Detailed explanation of front plate 2> Next, the detailed configuration of the placket 2 will be described with reference to Fig. 7. Fig. 7 is an enlarged view of the placket 2 shown from the back side of the underwear 1. Note that Fig. 7 shows the placket 2 in a plan view, but the lower side of the placket 2 when worn is curved toward the front in Fig. 7 (see Fig. 6).

[0062] As shown in Figure 7, the placket 2 of this embodiment is formed so that its length in the longitudinal direction is longer than its width. The width of the placket 2 gradually increases from the center of the placket 2 in the longitudinal direction to the upper and lower parts. The width of both ends of the placket 2 in the longitudinal direction is wider than the center part in the longitudinal direction. In other words, the left and right side edges 22, 23 of the placket 2 are curved so as to be concave inward. The placket 2 is characterized in that the left and right lower parts are connected to the hem part 13.

[0063] The placket 2 has a lining 6 arranged in the center. Water-repellent peripheral fabrics 71 and 72 are arranged to sandwich the lining 6 from the left and right. Water-repellent peripheral fabrics 73 and 74 are arranged to sandwich the lining 6 and the left and right water-repellent peripheral fabrics 71 and 72 from above and below. That is, the width W of the water-repellent peripheral fabrics 71, 72, 73, and 74 of the lining 6 and the first water-absorbent fabrics 51a and 51b and the second water-absorbent fabrics 52a and 52b overlapping the lining 6 is the distance between the body 11 and the lining 6. Here, "width" refers to the width of the water-repellent peripheral fabrics 71, 72, 73, and 74 in the direction perpendicular to the longitudinal direction. The width W of the water-repellent peripheral fabrics 71, 72, 73, and 74 is preferably in the range of 20 to 55 mm. If the width is narrower than this range, there is a risk of wetness returning or seeping out from the first absorbent fabrics 51a, 51b and the second absorbent fabrics 52a, 52b to the body 11. If the width is wider than this range, the first absorbent fabrics 51a, 51b and the second absorbent fabrics 52a, 52b may move more easily in the placket 2, which may impair the fit when worn.

[0064] The lower part of the placket 2 is connected to the bottom hem 13 at the lower side edges 221, 231. That is, the placket 2 connects the left and right bottom hem 13 at its lower part. Here, the area sandwiched between the left and right bottom hem 13 is formed to cover at least the perineum of the wearer. In this area sandwiched between the left and right bottom hem 13, portions of the first absorbent fabrics 51a, 51b and the second absorbent fabrics 52a, 52b are arranged overlapping the lining 6. In this way, the widths of the first absorbent fabrics 51a, 51b and the second absorbent fabrics 52a, 52b gradually increase from the center to the lower part, and further, portions of their lower parts extend to the area sandwiched between the left and right bottom hem 13. This increases the area available for water absorption and retention. As a result, the water absorption rate and water retention rate of the placket 2 are improved.

[0065] Additionally, in the central portion 28 of the placket 2, surrounded by the water-repellent peripheral fabrics 71, 72, 73, and 74, the lining 6, the first water-absorbent fabrics 51a, 51b, and the second water-absorbent fabrics 52a, 52b are layered, making the overall thickness of the fabric thicker than other portions. This increases the rigidity of the fabric in the central portion 28 of the placket 2. In other words, the fabric has a certain degree of shape retention in the central portion 28. Furthermore, because the central portion 28, which has this rigidity of the fabric, is located in the area sandwiched between the left and right hem portions 13, when the underwear 1 is hung to dry after washing, the placket 2 and the body portion 11 on the buttocks side of the lowermost end 27 do not adhere to each other, creating a space. This improves breathability within the underwear 1, leading to shorter drying times.

[0066] <Longitudinal stitching 81 and cross stitching 82> As shown in FIG. 7 , the longitudinal sewn portions 81 and the cross-sewn portions 82 in this embodiment are so-called stitches sewn with water-repellent thread. The longitudinal sewn portions 81 and the cross-sewn portions 82 form cross-shaped stitches on the surface of the lining 6. More specifically, the longitudinal sewn portions 81 are formed along the center of the width of the lining 6. The longitudinal sewn portions 81 are formed to have a length that is approximately half the length of the lining 6 in the longitudinal direction and are located approximately in the center of the lining 6 in the longitudinal direction. The cross-sewn portions 82 intersect with the longitudinal sewn portions 81 and extend in the width direction. The cross-sewn portions 82 are formed to have a length that is approximately half the length of the lining 6 in the width direction and are located approximately in the center of the lining 6 in the width direction. The cross-sewn portions 82 intersect with the longitudinal sewn portions 81 below the center of the longitudinal sewn portions 81. Specifically, the length L1 from the intersection X of the longitudinal sewn portion 81 and the cross sewn portion 82 to the upper end 811 of the longitudinal sewn portion 81 is longer than the length L2 from the intersection X to the lower end 812 of the longitudinal sewn portion 81. In addition, the relationship between the length L3 of the cross sewn portion 82 and the length L3 is such that L1>L3>L2.

[0067] In this way, the cross-sewn portions 82 intersect with the longitudinal sewn portions 81 below the center of the longitudinal sewn portions 81, and are positioned below the male genitalia when worn (see FIG. 6). This configuration increases the area above the cross-sewn portions 82 that can absorb urine. In other words, more urine is absorbed above the cross-sewn portions 82 than below. As a result, a greater proportion of urine passes through the cross-sewn portions 82 and moves downward from the cross-sewn portions 82, and urine is more effectively diffused by the cross-sewn portions 82. The effects of the cross-sewn portions 82 will be described in detail later.

[0068] Next, the cross-sectional configuration of the longitudinal sewn portion 81 and the cross-sewn portion 82, the lining 6, the first absorbent fabrics 51a, 51b, and the second absorbent fabrics 52a, 52b will be described with reference to Figure 8. Figure 8(a) is a cross-sectional view along the longitudinal sewn portion 81, and Figure 8(b) is a cross-sectional view in a direction perpendicular to the longitudinal sewn portion 81. Note that Figures 8(a) and (b) only show the longitudinal sewn portion 81, and the following description will also focus on the longitudinal sewn portion 81, but the cross-sewn portion 82 is configured in the same way.

[0069] As shown in Figure 8(a), the longitudinal seams 81 of this embodiment are sewn with a so-called running stitch, in which a needle is inserted and removed alternately from the front and back of the fabric to form dotted seams. The longitudinal seams 81 are sewn with a water-repellent thread. This prevents urine absorbed by the first absorbent fabrics 51a, 51b and the second absorbent fabrics 52a, 52b from seeping out due to the absorption of urine by the longitudinal seams 81 and the cross-sewn areas 82 themselves.

[0070] 8(b), the sewn fabrics (lining 6, first absorbent fabrics 51a, 51b, second absorbent fabrics 52a, 52b) are compressed to form groove-like depressions on the surfaces exposed to the outside of the fabric at the longitudinal sewn portions 81. In this way, groove-like depressions 601 are formed along the longitudinal sewn portions 81 on the surface of the lining 6, which makes it easier for moisture to flow along the longitudinal sewn portions 81 and the cross-sewn portions 82.

[0071] In the area where the longitudinal sewn portion 81 is formed, the lining 6, first water-absorbent fabrics 51a, 51b, and second water-absorbent fabrics 52a, 52b are in close contact with one another with no gaps, so moisture can easily penetrate from the lining 6 side to the second water-absorbent fabric 52b side, compared to other areas. On the other hand, in the area where the longitudinal sewn portion 81 is formed, the fabric is compressed by the water-repellent thread, so moisture does not easily penetrate from one area A1 on either side of the longitudinal sewn portion 81 to the other area A2.

[0072] Next, with reference to Figure 9, the flow and diffusion of urine in the placket 2 will be described. For example, if urine drips onto area A3 of the lining 6, which is enclosed by a dashed line, the urine is first absorbed by the lining 6 and is then transferred from the first absorbent fabric 51a to the second absorbent fabric 52b on the back side of the lining 6. The urine that is not absorbed by the lining 6 flows downward (see arrow D1 in Figure 9). At this time, some of the urine flows along the longitudinal seams 81 toward the bottom edge 63 of the lining 6. Then, some of the urine that flows along the longitudinal seams 81 flows from the crossing points X along the crossing seams 82 toward the left and right side edges 62, 64 of the lining 6 (see arrow D2).

[0073] In this way, urine initially spreads in the left-right direction at the cross-sewn portions 82, which allows it to diffuse over a wider area below the cross-sewn portions 82. Furthermore, some of the urine absorbed from the first absorbent fabric 51a to the second absorbent fabric 52b that cannot be retained within the fibers moves while permeating toward the bottom edge 63. At this time, the urine that has permeated up to the cross-sewn portions 82 is temporarily blocked by the cross-sewn portions 82, slowing its permeation speed downward from the cross-sewn portions 82. In this state, the urine temporarily blocked at the cross-sewn portions 82 diffuses in the left-right direction along the cross-sewn portions 82. It then gradually diffuses and permeates downward beyond the cross-sewn portions 82 (see arrow D3 in Figure 9). In this way, the cross-sewn portions 82 guide and diffuse the flow of urine in the left-right direction, allowing urine to permeate in a more diffused area below the longitudinal seams 81.

[0074] Next, referring to Figure 10, we will explain how urine penetrates and diffuses in the layer direction (thickness direction) from the lining 6 side to the second water-absorbent fabric 52b. Figure 10 is a cross-sectional view showing the fabrics from the lining 6 of the placket 2 to the water-repellent intermediate fabric 4. In Figure 10, horizontal arrows indicate the diffusion of urine in each fabric. The longer the horizontal arrow, the faster and wider the diffusion. Furthermore, downward arrows indicate the penetration of urine from one fabric to the next.

[0075] As described above, the lining 6 is made of a fabric with a relatively high moisture diffusion rate compared to the first absorbent fabrics 51a, 51b and the second absorbent fabrics 52a, 52b. As a result, urine once absorbed in the lining 6 is widely dispersed along the lining 6 (see arrow D4 in FIG. 10). The first absorbent fabrics 51a, 51b are made of a fabric with a relatively high moisture diffusion rate compared to the second absorbent fabrics 52a, 52b. As a result, urine is quickly transferred from the lining 6 to the first absorbent fabric 51a (see arrow D5). The urine absorbed by the first absorbent fabric 51a is widely dispersed along the first absorbent fabric 51a (see arrow D6). By dispersing urine widely within the first absorbent fabric 51a, the amount of urine retained by the first absorbent fabric 51a increases, and the amount returning to the lining 6 decreases.

[0076] A portion of the urine that cannot be retained by the first absorbent fabric 51a transfers to the second absorbent fabric 52a (see arrow D7 in Figure 10). The second absorbent fabrics 52a and 52b have a higher water retention rate than the first absorbent fabrics 51a and 51b, and therefore can retain a larger amount of urine than the first absorbent fabrics 51a and 51b. A portion of the urine that cannot be retained by the second absorbent fabric 52a transfers to the next first absorbent fabric 51b (see arrow D8). The urine absorbed by the first absorbent fabric 51b spreads along the first absorbent fabric 51b (see arrow D9). Finally, the urine that cannot be retained by the first absorbent fabric 51b transfers to the second absorbent fabric 52b (see arrow D10). Because the water-repellent intermediate fabric 4 is provided on the outer side of the second absorbent fabric 52b, seepage from the second absorbent fabric 52b toward the lower front placket 32 ​​is suppressed.

[0077] As explained above, in the underwear 1 of this embodiment, the absorbent fabric 5 of the placket 2 is formed of four layers: first absorbent fabrics 51a, 51b and second absorbent fabrics 52a, 52b. This allows the underwear 1 to maintain its urine retention capacity while forming air layers between the layers when hung out to dry after washing, leading to shorter drying times. Furthermore, because urine is dispersed and retained among the four layers: first absorbent fabrics 51a, 51b and second absorbent fabrics 52a, 52b, the drying time after washing can be reduced to approximately one-third of that required when urine is retained in a single absorbent fabric containing a superabsorbent polymer.

[0078] Furthermore, by alternately layering the first absorbent fabrics 51a, 51b, which have high moisture diffusion rates, and the second absorbent fabrics 52a, 52b, which have high moisture retention rates, it is possible to spread urine evenly over a wide area in the first absorbent fabrics 51a, 51b, while increasing the amount of urine retained in the second absorbent fabrics 52a, 52b. Furthermore, the lining 6 and the second absorbent fabrics 52a, 52b have the property of minimizing the amount of urine that flows back, thereby preventing urine absorbed by the placket 2 from flowing back toward the skin.

[0079] <About the manufacturing process of the placket> 11 to 14, a series of manufacturing steps for the placket 2 will be described below. Fig. 11(a) is a schematic diagram showing the first step of the manufacturing steps for the placket 2, Fig. 11(b) is a cross-sectional view taken along line XIb-XIb of Fig. 11(a), Fig. 12(a) is a schematic diagram showing the second step, Fig. 12(b) is a cross-sectional view taken along line XIIb-XIIb of Fig. 12(a), Fig. 13(a) is a schematic diagram showing the third step, Fig. 13(b) is a cross-sectional view taken along line XIIIb-XIIIb of Fig. 13(a), Fig. 14(a) is a schematic diagram showing the fourth step, and Fig. 14(b) is a cross-sectional view taken along line XIVb-XIVb of Fig. 14(a).

[0080] As shown in FIG. 11, in the first step, the lining 6, first water-absorbent fabrics 51a and 51b, and second water-absorbent fabrics 52a and 52b are temporarily joined together to form a longitudinal seam 81 and a cross-sewn portion 82. Specifically, first, the fabrics are layered in the following order: lining 6, first water-absorbent fabric 51a, second water-absorbent fabric 52a, first water-absorbent fabric 51b, and second water-absorbent fabric 52b. Then, the fabrics are temporarily joined together along the top edges 61, 511, and 521 with water-repellent thread (seamed portion 2011). Note that "temporarily joining" here refers to temporarily sewing the fabrics together to secure them before the actual stitching. Similarly, the bottom edge portions 63, 513, 523, the side edge portions 62, 512, 522, and the side edge portions 64, 514, 524 of each piece of fabric are temporarily fastened together with water-repellent thread (sewing portions 2013, 2012, 2014).

[0081] Next, the lining 6, the first absorbent fabrics 51a, 51b, and the second absorbent fabrics 52a, 52b, which have been temporarily fastened at each side, are sewn together at the longitudinal seams 81 and the cross seams 82. Specifically, the first absorbent fabrics 51a, 51b and the second absorbent fabrics 52a, 52b are sewn together along the center of the width of the lining 6 to form the longitudinal seams 81. Then, the lining 6, the first absorbent fabrics 51a, 51b, and the second absorbent fabrics 52a, 52b are sewn together so as to intersect with the longitudinal seams 81, to form the cross seams 82.

[0082] As shown in Figure 12, in the second step, water-repellent peripheral fabrics 71, 72, 73, and 74 are attached to the fabric temporarily attached in the first step. First, the water-repellent peripheral fabrics 71 and 72 are placed along the side edges 62 and 64 of the lining 6, and then the lining 6 is stitched to the side edges 62, 512, and 522 and the side edges 64, 514, and 524 of the first water-absorbent fabrics 51a and 51b and the second water-absorbent fabrics 52a and 52b (sewing sections 103 and 104). Similarly, the water-repellent peripheral fabrics 73 and 74 are placed along the top edge 61 and bottom edge 63 of the lining 6, and then the lining 6 is stitched to the top edges 61, 511, and 521 and the bottom edges 63, 513, and 523 of the first water-absorbent fabrics 51a and 51b and the second water-absorbent fabrics 52a and 52b (sewing sections 106 and 107). The stitching is done with a flat seam using water-repellent thread, which means the seams do not irritate the skin and do not impair comfort.

[0083] As shown in FIG. 13 , in the third step, the water-repellent intermediate fabric 4 and the lower placket 32 ​​are temporarily attached to the lining 6, to which the water-repellent peripheral fabrics 71, 72, 73, and 74 have been attached in the third step, and to the first water-absorbent fabrics 51a, 51b and second water-absorbent fabrics 52a, 52b. Specifically, the water-repellent intermediate fabric 4 and the lower placket 32 ​​are first layered on top of the second water-absorbent fabric 52b. Then, the upper edge portions 41, 321 of the water-repellent intermediate fabric 4 and the lower placket 32 ​​are temporarily attached with water-repellent thread along the upper edge portion 733 of the water-repellent peripheral fabric 73 (sewn portion 2021). Similarly, the lower edge portions 43, 323 of the water-repellent intermediate fabric 4 and the lower placket 32 ​​are temporarily attached with water-repellent thread along the lower edge portion 743 of the water-repellent peripheral fabric 74 (sewn portion 2023). Additionally, the side edges 42, 322 of the water-repellent intermediate fabric 4 and the lower front placket 32 ​​are temporarily fastened with water-repellent thread along the side edge 713 of the water-repellent peripheral fabric 71 (sewn portion 2022). Furthermore, the side edges 45, 44, 325, 324 of the water-repellent intermediate fabric 4 and the lower front placket 32 ​​are temporarily fastened with water-repellent thread along the side edge 723 of the water-repellent peripheral fabric 72 (sewn portion 2024).

[0084] In the fourth step of Figure 14, the upper placket 31 is attached to the fabric temporarily fastened in the third step. Binders B1 and B2 are sewn in advance to the side edges 723, 44, and 324 of the fabric temporarily fastened in the third step and to the side edge 313 of the upper placket 31. The upper placket 31 is then placed over the lower placket 32. At this time, the fabrics are placed so that the edges to which binders B1 and B2 are attached face opposite directions.

[0085] First, the upper edge portion 311 of the upper placket 31 is temporarily fastened with water-repellent thread along the upper edge portions 733, 41, 321 of the water-repellent peripheral fabric 73, the water-repellent intermediate fabric 4, and the lower placket 32 ​​(sewing portion 2031). Similarly, the lower edge portion 314 of the upper placket 31 is temporarily fastened with water-repellent thread along the lower edge portions 743, 43, 323 of the water-repellent peripheral fabric 74, the water-repellent intermediate fabric 4, and the lower placket 32 ​​(sewing portion 2033). In addition, the side edge portions 312, 313 of the upper placket 31 are temporarily fastened with water-repellent thread along the side edge portions 713, 42, 322 of the water-repellent peripheral fabric 71, the water-repellent intermediate fabric 4, and the lower placket 32 ​​(sewing portion 2032). Furthermore, the side edge 315 of the upper placket 31 is temporarily fastened with water-repellent thread along the side edges 723, 45, 44, 325, 324 of the water-repellent peripheral fabric 72, the water-repellent intermediate fabric 4, and the lower placket 32 ​​(sewn portion 2034). Note that the portions where the binders B1 and B2 are provided are not temporarily fastened.

[0086] The undergarment 1 is obtained by attaching the body 11 and waist elastic 12 to the placket 2 created through the above steps, and then processing the hem 13. In this embodiment, the hem 13 is processed by attaching a binder to the end of the hem of the body 11. The thread used in the sewing in each step described above is not particularly limited, but a thread that has been treated with a water-repellent finish is preferably used, and suitable examples include polypropylene thread, polyester water-repellent thread, acrylic water-repellent thread, nylon water-repellent thread, acetate water-repellent thread, and ethylene vinyl alcohol water-repellent thread.

[0087] <Variation 1> 15(a) is a cross-sectional view showing the placket 210 of Variant 1 of the underwear 1 according to the present invention. The placket 210 of Variant 1 includes first absorbent fabrics 51a, 51b, and 51c as absorbent fabrics 5, but, unlike the first embodiment, does not include second absorbent fabrics 52a and 52b (see FIG. 3). In this way, layering fabrics with high moisture diffusion rates can improve the urine absorption rate.

[0088] <Variation 2> 15(b) is a cross-sectional view showing the placket 220 in Modification 2 of the underwear 1 according to the present invention. The placket 220 of Modification 2 includes one first absorbent fabric 51a and one second absorbent fabric 52a as the absorbent fabrics 5. By providing one first absorbent fabric 51a and one second absorbent fabric 52a in this manner, the flexibility of the placket 220 is improved, leading to a comfortable fit. The above-described first and second modifications can be suitably used when the amount of urine required to be held is not as large as that of the first embodiment.

[0089] In the embodiment and variations of the underwear 1 according to the present invention described above, the placket body 3 is made up of an upper placket 31 and a lower placket 32, and is a type of underwear that has openings 25, 26 for inserting and removing the male genitalia. However, in other variations, the placket body 3 may be formed from a single piece of fabric and may not have openings 25, 26.

[0090] Various embodiments and modifications have been described above, but it goes without saying that these embodiments and modifications may be combined together. Furthermore, the present disclosure is not limited to the above-described embodiments, and can be implemented in various forms without departing from the gist of the present disclosure. [Explanation of symbols]

[0091] 1...underwear, 2...placket, 11...body, 31...upper placket, 32...lower placket, 4...water-repellent intermediate fabric, 51a, 51b...first water-absorbent fabric, 52a, 52b...second water-absorbent fabric, 6...lining, 71, 72, 73, 74...water-repellent peripheral fabric, 81...longitudinal seam, 82...cross seam

Claims

1. A front flap extending from the user's lower abdomen toward the buttocks; An underwear having a body connected to the placket, The placket is The front placket body and A lining provided on the front placket body side facing the user's body; A plurality of absorbent fabrics provided between the front placket body and the lining; A water-repellent fabric is provided between the front placket body and the water-absorbent fabric, The lining and the absorbent fabric are sewn together by a longitudinal seam extending along the longitudinal direction at the center of the width direction of the placket and a cross seam intersecting the longitudinal seam. underwear.

2. The front placket includes a peripheral fabric along the periphery of the lining and the absorbent fabric, One end of the peripheral fabric is sewn to the lining and the periphery of the water-absorbent fabric, and the other end is sewn to the body. The underwear according to claim 1.

3. The water-repellent fabric is not sewn to the lining and the water-absorbent fabric by the longitudinal seams and the cross seams. The underwear according to claim 1 or 2.

4. The water-absorbent fabric includes a first water-absorbent fabric and a second water-absorbent fabric that is layered on the first water-absorbent fabric and has a lower moisture diffusion property than the first water-absorbent fabric.

3. The underwear according to claim 1 or 2.

5. The second absorbent fabric has a higher water retention capacity than the first absorbent fabric.

5. The underwear according to claim 4.

6. The second absorbent fabric has a lower return rate than the first absorbent fabric.

5. The underwear according to claim 4.

7. The absorbent fabric includes two sheets of the first absorbent fabric and two sheets of the second absorbent fabric, The first absorbent fabric and the second absorbent fabric are alternately arranged one by one.

5. The underwear according to claim 4.

8. The absorbent fabrics are arranged in the following order from the lining side: the first absorbent fabric, the second absorbent fabric, the first absorbent fabric, and the second absorbent fabric.

8. The underwear according to claim 7.

9. The longitudinal seams and the cross seams are sewn to form a cross on the surface of the lining, The longitudinal sewn portion has a length in the extension direction longer than that of the cross sewn portion.

3. The underwear according to claim 1 or 2.

10. The cross stitched portion intersects with the longitudinal stitched portion below the center in the longitudinal direction.

3. The underwear according to claim 1 or 2.

11. The underwear has a waist portion and a hem portion, The waist portion is provided with a waist elastic. The placket is an upper side portion along the waist elastic; a lower side portion facing the upper side portion; a side edge portion extending from the top edge portion to the bottom edge portion; a side edge lower portion extending from the lower end of the side edge portion along the bottom edge portion to the bottom edge portion; 3. The underwear according to claim 1 or 2.

12. The peripheral fabric sewn to the lower edge portion is sewn to the lower end portion of the body on the buttocks side of the perineum of the user.

12. The underwear according to claim 11.

13. The lining has a higher moisture diffusion property than the first absorbent fabric.

5. The underwear according to claim 4.

14. the first absorbent fabric is a pile fabric, The second absorbent fabric is a nonwoven fabric that does not contain a superabsorbent polymer.

5. The underwear according to claim 4.

15. A placket that covers the user's lower abdomen to the buttocks, An underwear having a body connected to the placket, The placket is The front placket body and A lining provided on the front placket body side facing the user's body; Two first absorbent fabrics and two second absorbent fabrics provided between the front placket body and the lining; A water-repellent fabric provided between the front placket body and the water-absorbent fabric; a peripheral fabric provided along the peripheral edge of the lining, the first absorbent fabric, and the second absorbent fabric; The first water-absorbent fabric and the second water-absorbent fabric are alternately arranged in the order of the first water-absorbent fabric and the second water-absorbent fabric from the lining side, The first absorbent fabric has a higher moisture diffusion property than the second absorbent fabric, The second absorbent fabric has a higher water retention capacity than the first absorbent fabric, The lining, the first absorbent fabric, and the second absorbent fabric are sewn together at longitudinal seams that extend downward from the user's lower abdomen, and at cross seams that intersect the longitudinal seams and form a cross together with the longitudinal seams. underwear.

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