Pants

The underwear pants with low-elasticity regions and gathers ensure a snug fit, addressing the issue of fluid leakage by preventing fabric lift, particularly in the groin area, thereby enhancing wear comfort and reliability.

JP2025173913APending Publication Date: 2025-11-28SEIREN CO LTD
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Patent Information

Application Number
JP2024079780
Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Filing Date
2024-05-15
Publication Date
2025-11-28

AI Technical Summary

Technical Problem

Existing underwear pants with water-absorbing pads are prone to leakage of bodily fluids due to fabric lifting off the skin during movement, particularly in the groin area.

Method used

The design incorporates a low-elasticity region at the boundary between the crotch and rise sections with a flat seam, and gathers in the pubic and perineal areas, ensuring the absorbent pad fits snugly against the body, preventing fabric lift and fluid leakage.

Benefits of technology

The design effectively prevents leakage of bodily fluids by maintaining a snug fit, even during physical activity, through the use of low-elasticity regions and gathers, enhancing wear comfort and reliability.

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Abstract

To provide pants which can suppress leakage of body fluid when worn by a wearer.SOLUTION: Pants include a pants body and a water absorption pad. The pants body covers a wearer's skin in a worn state. The pants body is made of a fabric. The water absorption pad is provided at a back side of the pants body. The pants body includes: tubular crotches; and a rise part excluding the crotches. The crotches cover wearers' thighs. Gathers are provided in a portion with respect to wearer's pubes, perineum, and buttocks when worn on the rise part. The water absorption pad is overlapped on the gathers to be provided at the back side of the pants body. Low stretchable areas are provided at boundary portions between the crotches and the rise part with respect to an inguinal part of a wearer in the worn state. Stretchability of the low stretchable area is lower than that of a fabric forming the pants body.SELECTED DRAWING: Figure 1
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Description

[Technical Field]

[0001] The present invention relates to underwear pants. [Background technology]

[0002] Patent Document 1 discloses pants. These pants eliminate friction on the skin around the perineum and anus, and prevent skin rash (chick-down) on the buttocks. These pants have an elastic material such as rubber sewn into them from the upper center when viewed from the back to the crotch area at the bottom, causing the periphery to contract. Many large and small folds are formed on the left and right sides of the elastic material. When these pants are worn, the elastic material causes the seams to constantly dig into the cleft of the wearer's buttocks.

[0003] Patent Document 2 discloses a cloth water-absorbent pad. The water-absorbent pad consists of a pad body and a water-repellent tape. The pad body is formed in a shape and size suitable for attachment to urinary incontinence underwear. The water-repellent tape is sewn and welded to the periphery of the pad body. The water-repellent tape is sewn to the pad body at the seams. The water-repellent tape is welded to cover the seams, making them invisible from the outside. The pad body consists of a water-absorbent sheet and a waterproof sheet. The waterproof sheet is attached to the back surface of the water-absorbent sheet. A suitable waterproof sheet can be made of a material that has water absorption and water retention properties. Examples of such materials include synthetic fiber nonwoven fabrics and natural fiber nonwoven fabrics. Examples of synthetic fibers include polyester, acrylic, and rayon. The waterproof sheet can be made of multiple layers, including a waterproof sheet. The waterproof sheet has both water permeability and water repellency. A suitable waterproof sheet can be made of synthetic fiber cloth laminated with polyurethane resin. An example of such a synthetic fiber is polyester. A suitable water-repellent tape is one prepared by laminating the following film and slitting it to an appropriate width. This film is heat-welded to one side of a synthetic fabric that has been treated with a water-repellent finish. An example of such a synthetic fiber is polyester. The absorbent pad can also be attached to underwear and used as feminine hygiene underwear in place of a cloth sanitary napkin.

[0004] Patent Document 3 discloses a double knit fabric. With double knit fabric, there is no need for edge finishing after cutting (hemming-less). Double knit fabric is excellent in preventing runs (runs) and curling from the cut edge.

[0005] Non-Patent Document 1 discloses a business being carried out by the applicant. Specifically, Non-Patent Document 1 discloses a circular knit material called FlexMove (registered trademark). This circular knit material has an extremely small difference in stress when stretched and tightened, and has the property of providing an excellent fit when worn. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Design Registration No. 1703111 [Patent Document 2] Utility Model Registration No. 3184081 [Patent Document 3] International Publication No. 2009 / 011440 [Non-patent literature]

[0007] [Non-Patent Document 1] Seiren Co., Ltd., "FlexMove (registered trademark) FlexMove (registered trademark)", [online], [searched March 9, 2024], Internet<URL:https: / / www.seiren.com / products / clothing / sportsinner / flexmove / > Summary of the Invention [Problem to be solved by the invention]

[0008] Pants including a water-absorbing pad have been put into practical use. The water-absorbing pad is provided on the back side of the pants body made of fabric. The pants body covers the wearer's skin when the pants are worn by the wearer. The back side of the pants body faces the wearer's skin when worn. The water-absorbing pad absorbs bodily fluids. When the pants are for women, examples of bodily fluids include menstrual blood and urine. When the pants are for men, examples of bodily fluids include urine. When worn, bodily fluids may leak.

[0009] An object of the present invention is to provide pants that can prevent leakage of bodily fluids when worn by a wearer. [Means for solving the problem]

[0010] One aspect of the present invention is pants comprising: a pants body made of fabric that covers the skin of a wearer when the pants are worn by the wearer; and an absorbent pad provided on the back side of the pants body that faces the skin of the wearer when the pants are worn, wherein the pants body includes a tubular crotch that covers the thighs of the wearer, and a crotch excluding the crotch, and the crotch is provided with gathers in areas that will correspond to the wearer's pubic region, perineum and intergluteal cleft when the pants are worn, the absorbent pad is provided on the back side of the pants body and overlaps the gathers, and the pants body is provided with a low-elasticity region that is less elastic than the fabric forming the pants body, at the boundary between the crotch and the crotch that will correspond to the wearer's groin when the pants are worn.

[0011] These pants allow the absorbent pad to fit snugly against the wearer's body through the gathers. The low-stretch area prevents stretching of the boundary area caused by the wearer's thigh movements. By preventing stretching of the boundary area through the low-stretch area, it is possible to prevent the fabric from lifting off the skin in the groin area and its vicinity, allowing the fabric to fit snugly against the skin. The low-stretch area also prevents the transfer of bodily fluids.

[0012] The pants body may be provided with the low-elasticity regions at the boundaries around the entire circumference of the wearer's legs, including the groin, when worn. This configuration prevents the fabric from lifting off the skin around the entire circumference of the leg joints, allowing the fabric to fit snugly against the skin. As a result, the low-elasticity regions can prevent the transmission of bodily fluids around the entire circumference of the leg joints.

[0013] The low-elasticity region may include a seam that sews together the crotch and the rise. With this configuration, the low-elasticity region can be formed by sewing together the crotch and the rise.

[0014] The seam may be a flat seam. With this configuration, the low-elasticity region can be made flat. The low-elasticity region can be made wider. [Effects of the Invention]

[0015] According to the present invention, pants can be obtained that can prevent leakage of bodily fluids when worn by a wearer. [Brief explanation of the drawings]

[0016] [Figure 1] FIG. 1 is a front view showing an example of pants. [Figure 2] FIG. 2 is a rear view of the pants of FIG. 1. [Figure 3] FIG. 2 is a left side view of the pants of FIG. 1. [Figure 4] FIG. 2 is a right side view of the pants of FIG. 1. [Figure 5] FIG. 2 is a plan view of the pants of FIG. 1. [Figure 6] FIG. 2 is a bottom view of the pants of FIG. 1. [Figure 7] FIG. 2 is a front view of the back side of the pants of FIG. 1 with the pants turned inside out. [Figure 8] FIG. 2 is a rear view of the pants of FIG. 1 turned inside out. [Figure 9] Photographs showing an example of a flat seam machine. The top photo shows the front side of the pants body, and the bottom photo shows the back side of the pants body. DETAILED DESCRIPTION OF THE INVENTION

[0017] Embodiments for carrying out the present invention will be described with reference to the drawings. The present invention is not limited to the configurations described below, and various configurations can be adopted within the same technical concept. For example, some of the configurations described below may be omitted or replaced with other configurations. The present invention may also include other configurations.

[0018] <Pants 10> The pants 10 are women's underwear worn on the lower body. However, the pants 10 may be identified by a name other than "pants." For example, the pants 10 may be called "shorts." The applicant will conduct business using the name "spats" for the pants 10. In the embodiment, the state in which the wearer wears the pants 10 is referred to as the "worn state." The pants 10 include a pants body 20 and a water-absorbent pad 50 (see Figures 1 to 8). The water-absorbent pad 50 is provided on the back side of the pants body 20 (see Figures 5, 7, and 8). The back side faces the wearer's skin when worn.

[0019] The pants body 20 covers the wearer's skin when worn. The pants body 20 is made of fabric. The fabric forming the pants body 20 preferably has stretch properties, and preferably has moisture-absorbing and quick-drying properties. Known fabrics can be used as the fabric material for the pants body 20. An example of the fabric forming the pants body 20 is the circular knit material disclosed in Non-Patent Document 1. As is clear from Non-Patent Document 1, this circular knit material is known. Therefore, further explanation of the fabric forming the pants body 20 will be omitted.

[0020] The pants body 20 includes a crotch section 30 and a rise section 40 (see Figures 1 to 8). The crotch section 30 has a cylindrical shape (see Figures 5 and 6). The crotch section 30 covers the thighs of the wearer when worn. The pants body 20 includes crotch sections 31 and 32 as the crotch section 30. When a wearer puts on the pants 10, the wearer puts their right leg through the crotch section 31 and their left leg through the crotch section 32. When worn, the crotch section 31 covers the wearer's right thigh, and the crotch section 32 covers the wearer's left thigh. In the embodiments, when the crotch sections 31 and 32 are not distinguished from each other or are referred to collectively, they are referred to as "crotch sections 30." The left and right sides of the wearer are opposite to the left and right sides when the pants 10 are viewed from the front.

[0021] The rise 40 is a portion of the pants body 20 excluding the crotch 30 (crotch areas 31, 32). Gathers 41 are provided in the following portions of the rise 40 (see Figures 1, 2, and 6). These portions correspond to the wearer's pubic area, perineum, and gluteal cleft when worn. The gathers 41 are formed by the following method: In this method, elastic is stretched and sewn to the portions where the gathers 41 are to be provided. A three-point zigzag stitch may be used for this stitching. The zigzag lines representing the gathers 41 in Figures 1, 2, and 6 indicate that a three-point zigzag stitch is used for this stitching in the pants body 20. This technique is well known. Therefore, further explanation regarding this technique will be omitted.

[0022] The crotch section 30 and the rise 40 are sewn together. A seam 60 is provided at the boundary between the crotch section 30 and the rise 40 (see Figures 1 to 8). The pant body 20 employs a flat-seam seam for the seam 60 (see Figure 9). In the pant body 20, the flat-seam seam 60 forms a low-stretch region. The low-stretch region has lower stretchability than the fabric forming the pant body 20. That is, in the pant body 20, a low-stretch region is provided at the boundary between the crotch section 30 and the rise 40 (see Figures 1 to 6). This boundary corresponds to the wearer's groin when worn (see Figure 1). Furthermore, this boundary corresponds to the entire circumference of the groin, including the groin (see Figures 1 to 4 and 6). That is, the low-stretch region is provided around the entire boundary between the crotch section 30 and the rise 40.

[0023] In the pants body 20, a first low-elasticity region is provided at the boundary between the crotch 31 and the rise 40, and a second low-elasticity region is provided at the boundary between the crotch 32 and the rise 40 (see Figures 1 to 6). When worn, the first low-elasticity region covers the entire circumference of the wearer's right groin, including the right groin, and the second low-elasticity region covers the entire circumference of the wearer's left groin, including the left groin.

[0024] In the pants body 20, the stretch of the low-stretch region including the seam 60 may be 90% or less of the stretch of the fabric forming the pants body 20. In this case, the stretch of the low-stretch region including the seam 60 is preferably 80% or less of the stretch of the fabric forming the pants body 20. However, the stretch of the low-stretch region including the seam 60 is preferably 40% or more of the stretch of the fabric forming the pants body 20 from the following viewpoint: this viewpoint is related to the wearing comfort of the pants 10. The sewing thread may be a thread with less stretch than the ground thread of the fabric forming the pants body 20. The sewing thread forms the seam 60, and the ground thread forms the fabric forming the pants body 20. For example, the stretch of the sewing thread may be about 30% or about 20% of the ground thread of the fabric forming the pants body 20.

[0025] JIS L1096:2010 specifies fabric testing methods for woven and knitted fabrics. The elongation of the low-stretch region including the seam 60 and the elongation of the fabric forming the pants body 20 can be measured in accordance with JIS L1096:2010 (tensile strength and elongation, Method A (strip method)). JIS L1095:2010 specifies general spun yarn testing methods. The elongation of sewing yarn and ground yarn can be measured in accordance with JIS L1095:2010.

[0026] The absorbent pad 50 is provided on the back side of the pant body 20, overlapping the gathers 41 (see Figures 5, 7 and 8). When worn, the absorbent pad 50 covers the buttocks, including the pubic area, perineum and intergluteal cleft, and extends down to the wearer's waist. The leading edge of the absorbent pad 50 is sewn to the crotch 40. The leading edge of the absorbent pad 50 is provided on the back side of the pant body 20, on the front side (front body) of the pant body 20 (see Figures 5 and 7). The leading edge of the absorbent pad 50 has an arcuate shape.

[0027] The absorbent pad 50 is sewn to the crotch 40 at the periphery of a first region of the absorbent pad 50. The first region of the absorbent pad 50 covers the wearer's buttocks when worn, and the periphery of this first region includes the rear edge of the absorbent pad 50. The rear edge of the absorbent pad 50 is provided on the back side of the pants body 20, on the rear side (back bodice) of the pants body 20 (see Figures 5 and 8). The rear edge of the absorbent pad 50 has a linear shape that follows the short side direction of the absorbent pad 50. The short side direction of the absorbent pad 50 coincides with the left-right direction of the wearer when worn.

[0028] The absorbent pad 50 is provided on the back side of the pant body 20 with the second region separated from the crotch 40. The second region of the absorbent pad 50 overlaps the crotch of the crotch 40 on the back side of the pant body 20 and contacts the perineum when worn. By separating the second region of the absorbent pad 50 from the crotch 40, the wearer can easily use another napkin together while wearing the napkin. This type of napkin is called a "winged" napkin.

[0029] The absorbent pad 50 has a water-absorbing function and absorbs bodily fluids discharged from the human body. Examples of bodily fluids that the absorbent pad 50 absorbs include menstrual blood and urine. The absorbent pad 50 has a five-layer laminate structure. In the embodiment, the five layers that form the absorbent pad 50 are referred to as the "first layer," "second layer," "third layer," "fourth layer," and "fifth layer." The first layer, second layer, third layer, fourth layer, and fifth layer are laminated in this order from the skin side to the opposite side when worn. The first layer of the absorbent pad 50 comes into contact with the wearer's skin.

[0030] The first layer has moisture absorption and diffusion properties and deodorizing properties. Moisture absorption and diffusion properties refer to the ability to instantly absorb bodily fluids and allow the moisture to soak into the second and subsequent layers. The first layer has an uneven structure on the surface facing the wearer's skin. This uneven structure prevents the first layer from feeling wet even when the absorbent pad 50 is wet. The second and third layers have moisture absorption, water retention, antibacterial properties, and ammonia deodorizing properties. The second and third layers have a two-layer structure that ensures appropriate moisture absorption and water retention while also achieving antibacterial and deodorizing properties. The fourth layer is breathable and waterproof. The fourth layer allows steam to escape while ensuring waterproof properties. The fourth layer prevents stuffiness. The fifth layer is water repellent. The fifth layer prevents leakage from the stitching of the absorbent pad 50.

[0031] An example of the first layer is a mixed knitted fabric. An example of a combination of ground yarns is a combination of polyester yarn and polyurethane yarn. An example of the second and third layers is a nonwoven fabric. The nonwoven fabric may contain polyacrylate fibers. An example of the fourth layer is a breathable waterproof membrane. An example of a breathable waterproof membrane is a nonporous membrane mainly composed of polyurethane resin. An example of the fifth layer is a high-density, thin, water-repellent knitted fabric. An example of a high-density, thin, water-repellent knitted fabric is a smooth knitted fabric with a 40 gauge and a fineness of 25 dtx.

[0032] The absorbent pad 50 is preferably piped around its periphery. The tape used for the piping is preferably a two-layer structure made of the same material as the fourth and fifth layers. Such a tape can prevent leakage from the periphery of the absorbent pad 50. However, the tape used for the piping may be made of a different material. The material for the tape used for the piping is determined appropriately, taking into consideration various conditions.

[0033] The pants body 20 is formed by sewing together multiple fabric parts. Furthermore, the inseam 31 is formed into a tubular shape by sewing together the side edges of the fabric parts for the inseam 31, and the inseam 32 is formed into a tubular shape by sewing together the side edges of the fabric parts for the inseam 32. Similar to the inseam 30 and rise 40, seams are formed in the sewn portions. Examples of seams include flat-seam seams, as with seam 60. In addition to seam 60 in the inseam 30 and rise 40, the pants body 20 also includes flat-seam seams in the sewn portions of the fabric parts (see Figures 1 to 9). These seams, including seam 60, sew together fabric parts or side edges of fabric parts. In Figures 1 to 8, flat-seam seams are illustrated in the same manner as seam 60.

[0034] <Effects of the embodiment> According to the embodiment, the following effects can be obtained.

[0035] (1) The pants 10 are for women. The pants 10 include a pants body 20 and an absorbent pad 50 (see Figures 1 to 8). The pants body 20 covers the wearer's skin when worn. The pants body 20 is made of fabric. The absorbent pad 50 is provided on the back side of the pants body 20 when worn (see Figures 5, 7, and 8). The pants body 20 includes a crotch section 30 and a rise 40 (see Figures 1 to 8). The crotch section 30 has a cylindrical shape (see Figures 5 and 6). The crotch section 30 covers the wearer's thighs when worn. The rise 40 is the portion of the pants body 20 excluding the crotch section 30. The rise 40 has gathers 41 in the following areas (see Figures 1, 2, and 6). These areas correspond to the wearer's pubic area, perineum, and intergluteal cleft when worn. The water absorbent pad 50 is provided on the back side of the pant body 20, overlapping the gathers 41 (see Figs. 5, 7, and 8). The pant body 20 is provided with a low-stretch region. The low-stretch region is provided at the boundary between the crotch 30 and the rise 40 in relation to the wearer's groin when worn. The low-stretch region has lower stretchability than the fabric forming the pant body 20.

[0036] According to the pants 10, the gathers 41 allow the absorbent pad 50 to fit closely to the wearer. The low-stretch region can suppress stretching of the boundary portion that accompanies movement of the wearer's thighs. By suppressing stretching of the boundary portion using the low-stretch region, it is possible to prevent the fabric from lifting from the skin in and around the groin, allowing the fabric to fit closely to the skin. The low-stretch region can prevent the transmission of bodily fluids. The pants 10 can suppress leakage of bodily fluids when worn.

[0037] The pants 10 have low-elasticity regions around the entire groin area. This prevents the fabric from lifting off the skin around the entire groin area, allowing the fabric to adhere closely to the skin. As a result, the low-elasticity regions can prevent bodily fluids from flowing around the entire groin area.

[0038] The inventors have confirmed that the pants 10 can prevent menstrual leakage even during exercise. The exercise consisted of a three-hour training session of ground and standing techniques by a judo athlete. The judo athlete wore the pants 10 while also using a sanitary napkin.

[0039] (2) The low-elasticity region includes a seam 60 (see FIGS. 1 to 8). The seam 60 sews together the crotch 30 and the rise 40. With this configuration, the low-elasticity region can be formed by sewing together the crotch 30 and the rise 40.

[0040] (3) The seam 60 is a flat seam (see FIG. 9). This configuration allows the low-stretch area to be flat. The low-stretch area can be made wider.

[0041] <Modification> The embodiment can also be as follows. Some of the configurations of the modified examples shown below can also be adopted in appropriate combination. Below, we will explain the differences from the above, and will omit explanations of similarities as appropriate.

[0042] (1) In the embodiment, women's pants 10 are used as an example (see Figs. 1 to 8). The structure employed by the pants 10 can also be used in men's pants. When the pants are for men, an example of bodily fluid is urine. In men's pants, the absorbent pad may have a different shape from the absorbent pad 50. The shape of the absorbent pad is determined appropriately taking into account various conditions.

[0043] As with the women's pants 10, the gathers in men's pants also make it possible to fit the absorbent pad tightly to the wearer while preventing the fabric from lifting up from the skin in the groin and surrounding areas, allowing the fabric to fit tightly to the skin. Furthermore, as with the women's pants 10, the men's pants may also have low-elasticity regions around the entire groin area. This makes it possible to prevent the fabric from lifting up from the skin around the entire groin area, allowing the fabric to fit tightly to the skin.

[0044] (2) In the pants 10, low-elasticity regions are provided at the boundary between the crotch 30 and the crotch 40 relative to the entire circumference of the wearer's groin when worn (see Figures 1 to 4, 6). The boundary between the crotch and the crotch where the low-elasticity regions are provided does not have to be the entire circumference of the wearer's groin when worn. For example, the boundary between the crotch and the crotch where the low-elasticity regions are provided does not have to include the boundary between the crotch and the crotch at the outer thighs of the wearer when worn. The range of the boundary between the crotch and the crotch where the low-elasticity regions are provided is determined appropriately taking into consideration various conditions. However, the boundary between the crotch and the crotch where the low-elasticity regions are provided includes the area relative to the wearer's groin when worn.

[0045] (3) The pants body 20 is formed by sewing together multiple fabric parts (see Figures 1 to 8). The pants body may be seamless. Assume that the pants body is seamless. A seam similar to the seam 60 is provided on this pants body at the boundary between the crotch and crotch around the entire circumference of the leg when worn. This seam forms a low-elasticity region on the seamless pants body. However, since the crotch and crotch are integral with each other on seamless pants bodies, this seam does not sew the crotch and crotch together. Even on seamless pants bodies, the boundary between the crotch and crotch where the low-elasticity region is provided does not have to be around the entire circumference of the wearer's groin when worn. This point has been described above. Therefore, further explanation regarding this point will be omitted.

[0046] (4) The absorbent pad 50 has a five-layer laminated structure. The absorbent pad may have a two to four layer laminated structure or a six or more layer laminated structure. Alternatively, the absorbent pad may have a single layer structure. The specifications of the absorbent pad are determined appropriately in consideration of various conditions. When the absorbent pad has a laminated structure, the specifications of each layer are determined appropriately in consideration of various conditions. However, the absorbent pad includes a layer having water-absorbing properties. [Explanation of symbols]

[0047] 10 Pants, 20 Pants, 30, 31, 32 Inseam, 40 Rise 41 gathers, 50 absorbent pads, 60 seams

Claims

1. A pants body made of fabric that covers the wearer's skin when the pants are worn by the wearer; a water-absorbing pad provided on the back side of the pants body, which is the skin side of the wearer when the pants are worn; The pants body includes: A tubular crotch that covers the wearer's thighs; and a rise excluding the crotch, Gathers are provided in the crotch area in the worn state in the areas corresponding to the wearer's pubic region, perineum, and gluteal cleft, The water-absorbing pad is provided on the back side of the pants body, overlapping the gathers; The pants body has a low-stretch area that is less stretchable than the fabric forming the pants body at the boundary between the crotch and the crotch relative to the wearer's groin when worn.

2. The pants according to claim 1 , wherein the pants body has the low-elasticity regions at the boundaries around the entire circumference of the base of the legs including the groin of the wearer when the pants are worn.

3. The pants according to claim 1 or 2, wherein the low-elasticity region includes a seam that joins the crotch and the rise.

4. The pants of claim 3 , wherein the seams are flat seams.

Citation Information

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