Combined elastic waistline menstrual period trousers and preparation method thereof

Abstract

The invention relates to the field of disposable hygienic products, and provides combined elastic waistline menstrual period trousers which comprise a menstrual period trousers body, the menstrual period trousers body comprises an absorber layer and an outer clothes layer, and the outer clothes layer comprises an outer clothes outer layer, an outer clothes middle outer layer, an elastic material layer and an outer clothes inner layer which are sequentially stacked from outside to inside. The absorber layer comprises a liquid-permeable surface layer, a conducting layer, an absorbing core and a liquid-tight bottom layer which are sequentially arranged in a laminated mode from top to bottom, through independent forming design of the front piece and the rear piece and gradient distribution of the elastic material layers, the waist-hip curve of the human body is met, the shifting risk is reduced, and the movement freedom degree is improved; the differentiated design of the width + 20% and the length + 10% of the rear piece adapts to the waist-hip difference of the human body, and the side leakage risk is reduced; the inner layer of the outer clothes is turned outwards to form a skirt edge, and a three-dimensional skirt edge bubble part is formed by matching with a 5-40mm non-sizing area below the waistband, so that the aesthetic property, the air permeability and the softness are improved, and the technical problem of poor comfort of trousers type menstrual period trousers is solved.

Description

Technical Field

[0001] This invention relates to the field of disposable hygiene products, and more particularly to a combination elastic waistband menstrual pant and its preparation method. Background Technology

[0002] Conventional panty-style sanitary napkins generally use a one-piece molding process for the front and back panels, with the front and back panels having the same width. Their typical structure consists of an absorbent layer (permeable top layer, conductive layer, absorbent core, impermeable bottom layer) and an outer layer (outer garment layer, elastic material layer, etc.). Existing technology has the following core defects:

[0003] 1. Discomfort during movement and sleep: The one-piece front and back panel structure makes it easy for the legs to get stuck when moving. When sleeping on your side, the sealing position is located in the pressure area of ​​the body (such as the area from the hip bone to the buttocks), which produces a noticeable foreign body sensation, affecting daily activities and sleep quality. Long-term use may cause skin pressure discomfort and reduce product use compliance.

[0004] 2. Insufficient Structural Adaptability: The equal width design of the front and back panels fails to accommodate the body shape characteristics of those with thicker hips and narrower waists. This results in the sealing position directly aligning with the pressure point during side sleeping, exacerbating the feeling of discomfort. The distribution and elasticity ratio of the elastic material lack dynamic adjustment, failing to meet the needs of different body types. The product does not adequately consider the differences in hip and waist shapes, leading to poor fit and overlap between the front and back panel sealing positions and the pressure points during side sleeping. Furthermore, the lack of scientific design in the arrangement and elasticity ratio of the elastic material results in inconsistent elasticity and comfort in different areas (such as the waist and legs), affecting the overall wearing experience.

[0005] 3. Limitations of absorbent core performance: Traditional absorbent cores are not optimized to prevent clumping, breakage, and liquid spread, easily leading to insufficient dryness and backflow. Furthermore, the capacity of the front and back panels is not designed according to the thickness differences of different body parts, resulting in poor coverage. Traditional designs also lack differentiated aesthetic features (such as a 3D bubble skirt hem), leaving room for improvement in visual appeal and tactile experience. Summary of the Invention

[0006] Therefore, to address the aforementioned problems, this invention proposes a combined elastic waistband menstrual trousers and its manufacturing method. It solves the technical problem of poor comfort in traditional menstrual trousers.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A modular elastic waistband menstrual panty includes a panty body comprising an absorbent core layer and an outer garment layer. The absorbent core layer comprises, from top to bottom, a liquid-permeable top layer, a conductive layer, an absorbent core, and a liquid-impermeable bottom layer. The absorbent core comprises an upper wrapping layer, an absorbent layer, and a lower wrapping layer. The upper wrapping layer is made of low-diffusion spunbond nonwoven fabric, and the lower wrapping layer is made of high-diffusion spunlace nonwoven fabric. The outer garment layer comprises independently formed front and back pieces, with the absorbent core layer connecting the front and back pieces. The outer garment layer comprises an outer outer layer, a middle outer layer, an elastic material layer, and an inner outer layer. The back piece is at least 20% wider than the front piece, and the front and back pieces are joined at a position slightly forward of the body, closest to the hip bone. The front protrusion is 5-50mm, and the back piece is more than 10% longer than the front piece. The product is divided longitudinally into a front waist area, a front waist-abdomen area, a crotch area, a back hip area, a back side waist area, and a back waist area. The lateral elasticity is as follows: front waist area elasticity ≥ back waist area elasticity > front waist-abdomen area elasticity ≥ back side waist area elasticity ≥ back hip area elasticity. The crotch area has no lateral elasticity but has longitudinal elasticity. The menstrual pants have a skirt hem. The inner layer of the outer garment is folded outward and glued to the upper half of the outer layer of the outer garment. The lower half has an un-glueed area of ​​more than 10mm to form the skirt hem. The inner and outer layers of the outer garment have an un-glueed area of ​​5-40mm starting 5-25mm below the waistband to form the skirt hem bubble part.

[0009] Further:

[0010] The front waist area, back waist area, front waist abdomen area, and back side waist area all have spandex filaments with a fineness ranging from 50dtex to 310dtex. The spandex filament spacing is 1.0mm to 7.0mm, the spandex filament stretch ratio is 1.5 to 3.0, and the spandex filaments are located between the outer layer and the inner layer of the outer garment to form the first elastic layer.

[0011] The front and back waist areas are also layered with spandex fibers with a fineness ranging from 310 dtex to 1100 dtex, a spacing of 1 mm to 25 mm, and a stretch ratio of 1.5 to 3.5. The spandex fibers are located between the outer layer of the outer garment or between the outermost and inner layers of the outer garment, forming an inverted triangle shape when the garment is laid flat. The back hip area also has spandex fibers with a fineness ranging from 310 dtex to 1100 dtex, a spacing of 5 mm to 45 mm, and a stretch ratio of 1.5 to 3.5. The spandex fibers are located between the outer layer of the outer garment or between the outermost and inner layers of the outer garment, providing elastic coverage for the hip area. These elements together form a second elastic layer.

[0012] The elastic material layer is made of spandex yarn or elastic nonwoven fabric with a fine denier of ≥50dtex and ≤1100dtex. The elastomer of the elastic nonwoven fabric can be SBS block copolymer elastomer, POE polyolefin elastomer, PU polyurethane, EPDM ethylene propylene diene monomer rubber elastomer and their combinations or modifications.

[0013] The tensile force of the elastic material distributed along the waist circumference is greater than that distributed along the side waist circumference. The elastic comfort coefficient is equal to the tensile force at the same location / the recovery force. Both the tensile force and the recovery force are the force values ​​corresponding to stretching the product's waist circumference to the standard waist circumference size. The elastic comfort coefficient ranges from 1.1 to 2.1.

[0014] Under natural conditions, the leg circumference of this product is ≥420mm, and under wearing conditions, the leg circumference can be extended to over 1100mm.

[0015] Front hem opening angle: Using the bottom of the elastic band as the base point, measure the angle by rotating clockwise from the bottom of the side seal to the narrowest point of the O-cut.

[0016] The angle of the rear hem: Using the bottom of the elastic band as the base point, measure the angle by rotating clockwise from the narrowest point of the O-cut to the bottom of the side seal.

[0017] The front leg opening angle of the product is ≥130°, so the front does not constrict the crotch area. The rear leg opening angle of the product is ≥150°, so the rear has good wrapping.

[0018] The absorbent layer has X-shaped embossing extending from the lower wrapping layer to the upper wrapping layer.

[0019] The liquid-permeable surface layer and / or conductive layer are added with antibacterial components, the main antibacterial components being quaternary ammonium salt antibacterial agents or guanidine antibacterial agents.

[0020] This invention also provides a method for preparing a combination elastic waistband menstrual pant:

[0021] (1) Manufacturing absorbent core: fluff pulp and polymer feeding device feed to the lower coating layer, forming an absorbent layer on the lower coating layer, the upper coating layer covers the absorbent layer, the lower coating layer is folded upward, and the absorbent core is cut into short pieces to form a block-shaped absorbent core.

[0022] (2) Manufacturing the absorbent layer: The liquid-permeable surface layer, the conductive layer, the absorbent core and the liquid-impermeable bottom layer are combined to form the absorbent layer;

[0023] (3) Manufacturing outer garment layer: Apply adhesive to the inner layer and the middle outer layer or the outer layer of the outer garment, and apply the first elastic layer material spandex yarn between the middle outer layer and the inner layer of the outer garment and combine them. Apply the second elastic layer material spandex yarn between the outer layer and the middle outer layer of the outer garment and combine them to form the front and back pieces of the outer garment layer. The inner layer of the outer garment in the front or back piece extends 15-80mm. The inner layer of the outer garment is folded outward and glued to the upper half of the outer garment. The lower half has an un-glueed area of ​​more than 10mm to form a skirt. The middle outer layer and the inner layer of the outer garment have an un-glueed area of ​​5-40mm from 5-25mm below the waistband to form the skirt bubble part.

[0024] (4) Manufacturing the menstrual pant body: The front and back pieces of the outer garment layer are combined with the absorbent layer, folded, welded and cut to form a single piece of ergonomic menstrual pant body.

[0025] By adopting the aforementioned technical solution, the beneficial effects of the present invention are:

[0026] Through the independent molding design of the front and back pieces and the gradient distribution of elastic material layers, the elasticity of the front waist area is greater than or equal to that of the back waist area, which is greater than that of the waist and abdomen area. This conforms to the human waist-hip curve, reduces the risk of displacement, and improves freedom of movement. The composite design of the upper wrapping layer of low-diffusion spunbond nonwoven fabric and the lower wrapping layer of high-diffusion spunlace nonwoven fabric increases the liquid absorption speed by 25% and expands the diffusion area by 30%, solving the problems of clumping and backflow of traditional cores. The differentiated design of the back piece with a width of +20% and a length of +10% adapts to the waist-hip difference of the human body and reduces the risk of side leakage. The first elastic layer, formed by 50dtex-310dtex fine spandex yarn, and the second elastic layer, superimposed with 310dtex-1100dtex fine spandex yarn, control the difference in elastic modulus in the waist area, improving fit; the liquid-permeable surface layer is infused with quaternary ammonium salt antibacterial agents (concentration 0.5-2ppm), inhibiting the growth of more than 99% of E. coli and extending the safe service life of the product; the inner layer of the outer garment is folded outward to form a skirt hem, which, together with the 5-40mm un-adhesive area below the waistband, forms a three-dimensional skirt hem bubble section, improving aesthetics and breathability. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of the menstrual pants of the present invention.

[0028] Figure 2 This is a schematic diagram of the distribution of spandex fibers in the first elastic layer.

[0029] Figure 3 This is a schematic diagram showing the distribution of spandex fibers in the second elastic layer.

[0030] Figure 4This is a schematic diagram of the composite of the outer garment layer and the absorbent layer.

[0031] Figure 5 This is a schematic diagram of the independently molded front and back pieces.

[0032] Figure label:

[0033] 11. Absorbent layer; 111. Upper core; 112. Middle core; 113. Lower core; 12. Outer garment layer; 121. Front piece; 122. Back piece; 123. First elastic layer; 124. Second elastic layer; 125. Skirt; 126. Bubble section. Detailed Implementation

[0034] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0035] refer to Figures 1 to 5 This embodiment provides a combined elastic waistband menstrual panty, including a menstrual panty body. The menstrual panty body includes an absorbent layer 11 and an outer garment layer 12. The absorbent layer 11 includes a liquid-permeable surface layer, a conductive layer, an absorbent core, and a liquid-impermeable bottom layer. The absorbent core includes an upper wrapping layer, an absorbent layer, and a lower wrapping layer. The upper wrapping layer is a low-diffusion spunbond nonwoven fabric, and the lower wrapping layer is a high-diffusion spunlace nonwoven fabric. The outer garment layer 12 includes a separately formed front piece 121 and a back piece 122. The absorbent layer 11 is connected between the front piece 121 and the back piece 122. The outer garment layer 12 includes an outer garment outer layer, an inner outer garment middle layer, an elastic material layer, and an inner garment outer layer, which are stacked sequentially from the outside to the inside. The inner outer garment middle layer, the elastic material layer, and the inner garment outer layer are located at the front piece 121 and the back piece 122. The width of the back piece 122 is more than 20% wider than the width of the front piece 121. The back panel is sealed at a position slightly forward of the body, 5-50mm away from the most prominent point of the hip bone. The length of the back panel 122 is more than 10% longer than that of the front panel 121. The product is divided into the front waist area, front waist and abdomen area, crotch area, back hip area, back side waist area, and back waist area in the longitudinal direction. The lateral elasticity is as follows: front waist area elasticity ≥ back waist area elasticity > front waist and abdomen area elasticity ≥ back side waist area elasticity ≥ back hip area elasticity. The crotch area has no lateral elasticity but has longitudinal elasticity. The menstrual pants have a skirt hem 125. The inner layer of the outer garment is folded outward and bonded to the upper half of the outer garment. The lower half has an unbonded area of ​​more than 10mm, forming the skirt hem 125. The inner and outer layers of the outer garment have an unbonded area of ​​5-40mm starting 5-25mm below the waistband, forming the bubble part 126 of the skirt hem 125.

[0036] In one embodiment, the front waist area, back waist area, front waist abdomen area, and back side waist area are all distributed with spandex filaments with a fineness in the range of 50dtex-310dtex, the spandex filament spacing is 1.0mm-7.0mm, the spandex filament stretch ratio is 1.5-3.0, and the spandex filaments are located between the outer layer and the inner layer of the outer garment to form a first elastic layer 123.

[0037] In one embodiment, the front waist area and the back waist area are also superimposed with spandex filaments with a fineness in the range of 310 dtex-1100 dtex, a spandex filament spacing of 1 mm-25 mm, a spandex filament stretch ratio of 1.5-3.5, and the spandex filaments are located between the outer layer and the inner layer of the outer garment, forming an inverted triangle shape when naturally placed; the back hip area has spandex filaments with a fineness in the range of 310 dtex-1100 dtex, a spandex filament spacing of 5 mm-45 mm, a spandex filament stretch ratio of 1.5-3.5, and the spandex filaments are located between the outer layer or the inner layer of the outer garment, to provide elastic wrapping for the hip area, forming a second elastic layer 124.

[0038] In one embodiment, the elastic material layer is spandex yarn or elastic nonwoven fabric with a fine denier of ≥50dtex and ≤1100dtex. The elastomer of the elastic nonwoven fabric can be SBS block copolymer elastomer, or POE polyolefin elastomer, PU polyurethane, EPDM ethylene propylene diene monomer rubber elastomer, and their combinations or modifications.

[0039] In one embodiment, the tensile force of the elastic material distributed along the waist circumference is greater than the tensile force of the elastic material distributed along the side waist circumference.

[0040] The following is a table of examples of elastic comfort coefficients. As can be seen from the table, Case 5 represents the structure with optimal elasticity:

[0041]

[0042] In one embodiment, under natural conditions, the leg circumference of the product is ≥420mm, and under wearing conditions, the leg circumference can be extended to more than 1100mm.

[0043] In one embodiment, the opening angle of the front pant leg is: with the lowest point of the elastic band as the base point, the angle is measured by rotating clockwise from the lowest point of the side seal to the narrowest point of the O-cut.

[0044] Rear hem opening angle: Using the lowest point of the elastic band as the base point, measure the angle by rotating clockwise from the narrowest point of the O-cut to the lowest point of the side seal.

[0045] The front leg opening angle of the product is ≥130°, so the front does not constrict the crotch area. The rear leg opening angle of the product is ≥150°, so the rear has good wrapping.

[0046] In one embodiment, the absorbent layer is provided with X-shaped embossing extending from the lower wrapping layer to the upper wrapping layer.

[0047] In one embodiment, antibacterial components are added to the liquid-permeable surface layer and / or conductive layer, with the main antibacterial components being quaternary ammonium salt antibacterial agents or guanidine antibacterial agents.

[0048] This invention also provides a method for preparing a combination elastic waistband menstrual pant:

[0049] (1) Manufacturing absorbent core: fluff pulp and polymer feeding device feed to the lower coating layer, forming an absorbent layer on the lower coating layer, the upper coating layer covers the absorbent layer, the lower coating layer is folded upward, and the absorbent core is cut into short pieces to form a block-shaped absorbent core.

[0050] (2) Manufacturing absorbent layer 11: The liquid-permeable surface layer, conductive layer, absorbent core and liquid-impermeable bottom layer are combined to form absorbent layer 11;

[0051] (3) Manufacturing outer garment layer 12: Apply adhesive to the inner layer and the middle outer layer (or outer garment), and apply the first elastic layer material spandex yarn between the middle outer layer and the inner layer and combine them. Apply the second elastic layer material spandex yarn between the outer garment and the middle outer layer and combine them to form a front piece and a back piece. The inner layer of the outer garment in the front piece or the back piece extends 15-80mm. The inner layer of the outer garment is folded outward and glued to the upper half of the outer garment. The lower half has an un-adhesive area of ​​more than 10mm to form a skirt hem 125. The middle outer layer and the inner layer of the outer garment have an un-adhesive area of ​​5-40mm from 5-25mm below the waistband to form the bubble part 126 of the skirt hem 125.

[0052] (4) Manufacturing the menstrual pants body: Combine the front or back piece of the outer garment layer 12 with the absorbent layer 11, fold, weld, and cut to form a single piece of ergonomic menstrual pants body.

[0053] The distribution of the above elastic materials gives this panty-style sanitary napkin good elasticity and comfort. Elasticity comfort coefficient = tensile force at the same location / recovery force. Both tensile force and recovery force are values ​​corresponding to the force required to stretch the product's waist circumference to a standard waist size. Standard waist circumference is 90cm for size M, 95cm for size L, and 100cm for size XL. This invention's product has good elasticity and comfort, with an optimal elasticity comfort coefficient range of 1.3 to 1.8. A suitable elasticity comfort coefficient range is 1.1 to 2.1. Below 1.1, elasticity is insufficient, resulting in a noticeably loose feel when worn; above 2.1, it is difficult to stretch and causes a noticeable constricting feeling after prolonged wear.

[0054] In one embodiment, the absorbent core adopts a three-dimensional gradient structure and is formed on a polymer feeding device. The manufacturing method is as follows:

[0055] Upper core 111: wood pulp fiber, weight 40-60 g / m² 2 SAP, with a particle size of 100-300μm, is a mixture of 30% wood pulp fiber and 70% high-polymer SAP, which is then bonded together with hot air to form a highly fluffy flow-guiding layer with a penetration time of 1-2 seconds.

[0056] Middle core 112: 50% wood pulp fiber and 50% SAP, with added deodorizing agent;

[0057] The lower core 113 is a composite of 40% wood pulp fiber and 60% SAP.

[0058] Surface treatment: Coat the skin-friendly layer with 0.1-0.3μm thick tea oil.

[0059] Although the invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the invention without departing from the spirit and scope of the invention as defined in the appended claims, all of which shall be within the scope of protection of the invention.

Claims

1. A combination elastic waistband menstrual pant, characterized in that: The garment includes a menstrual panty body, comprising an absorbent core layer and an outer garment layer. The absorbent core layer comprises, from top to bottom, a liquid-permeable surface layer, a conductive layer, an absorbent core, and a liquid-impermeable bottom layer. The absorbent core comprises an upper wrapping layer, an absorbent layer, and a lower wrapping layer. The upper wrapping layer is made of low-diffusion spunbond nonwoven fabric, and the lower wrapping layer is made of high-diffusion spunlace nonwoven fabric. The outer garment layer comprises independently formed front and back pieces, connected by the absorbent core layer. The outer garment layer comprises an outer outer layer, a middle outer layer, an elastic material layer, and an inner outer layer. The back piece is at least 20% wider than the front piece, and the front and back pieces are joined at a position slightly forward of the body, 5-5 cm from the most prominent point of the hip bone. 0mm, the back piece is more than 10% longer than the front piece; the product is longitudinally divided into the front waist area, front waist and abdomen area, crotch area, back hip area, back side waist area, and back waist area, and its lateral elasticity is as follows: front waist area elasticity ≥ back waist area elasticity > front waist and abdomen area elasticity ≥ back side waist area elasticity ≥ back hip area elasticity, the crotch area has no lateral elasticity but has longitudinal elasticity; the menstrual pants have a skirt hem, the inner layer of the outer garment is folded outward and glued to the upper half of the outer layer of the outer garment, and the lower half has an un-glueed area of ​​more than 10mm to form the skirt hem; the inner and outer layers of the outer garment have an un-glueed area of ​​5-40mm starting from 5-25mm below the waistband to form the skirt hem bubble part.

2. The combined elastic waistband menstrual pants according to claim 1, characterized in that: The front waist area, back waist area, front waist abdomen area, and back side waist area all have spandex filaments with a fineness ranging from 50dtex to 310dtex. The spandex filament spacing is 1.0mm to 7.0mm, the spandex filament stretch ratio is 1.5 to 3.0, and the spandex filaments are located between the outer layer and the inner layer of the outer garment to form the first elastic layer.

3. The combined elastic waistband menstrual pants according to claim 2, characterized in that: The front and back waist areas are also layered with spandex fibers with a fineness ranging from 310 dtex to 1100 dtex, a spacing of 1 mm to 25 mm, and a stretch ratio of 1.5 to 3.

5. The spandex fibers are located between the outer layer of the outer garment or between the outermost and inner layers of the outer garment, forming an inverted triangle shape when the garment is laid flat. The back hip area also has spandex fibers with a fineness ranging from 310 dtex to 1100 dtex, a spacing of 5 mm to 45 mm, and a stretch ratio of 1.5 to 3.

5. The spandex fibers are located between the outer layer of the outer garment or between the outermost and inner layers of the outer garment, providing elastic coverage for the hip area. These elements together form a second elastic layer.

4. A combination elastic waistband menstrual pant according to claim 2, characterized in that: The elastic material layer is made of spandex yarn or elastic nonwoven fabric with a fine denier of ≥50dtex and ≤1100dtex. The elastomer of the elastic nonwoven fabric can be SBS block copolymer elastomer, POE polyolefin elastomer, PU polyurethane, EPDM ethylene propylene diene monomer rubber elastomer and their combinations or modifications.

5. A combination elastic waistband menstrual pant according to claim 1, characterized in that: The tensile force of the elastic material distributed along the waist circumference is greater than that distributed along the side waist circumference. The elastic comfort coefficient is equal to the tensile force at the same location / the recovery force. Both the tensile force and the recovery force are the force values ​​corresponding to stretching the product's waist circumference to the standard waist circumference size. The elastic comfort coefficient ranges from 1.1 to 2.

1.

6. The combined elastic waistband menstrual pants according to claim 1, characterized in that: Under natural conditions, the leg circumference of this product is ≥420mm, and under wearing conditions, the leg circumference can be extended to over 1100mm.

7. A combination elastic waistband menstrual pant according to claim 6, characterized in that: Front hem opening angle: Using the bottom of the elastic band as the base point, measure the angle by rotating clockwise from the bottom of the side seal to the narrowest point of the O-cut. Rear hem opening angle: Using the lowest point of the elastic band as the base point, measure the angle by rotating clockwise from the narrowest point of the O-cut to the lowest point of the side seal. The front leg opening angle of the product is ≥130°, so the front does not constrict the crotch area. The rear leg opening angle of the product is ≥150°, so the rear has good wrapping.

8. A combination elastic waistband menstrual pant according to claim 1, characterized in that: The absorbent layer has X-shaped embossing extending from the lower wrapping layer to the upper wrapping layer.

9. A combination elastic waistband menstrual pant according to claim 1, characterized in that: The liquid-permeable surface layer and / or conductive layer are added with antibacterial components, the main antibacterial components being quaternary ammonium salt antibacterial agents or guanidine antibacterial agents.

10. A method for preparing a combined elastic waistband menstrual pant according to claim 1, characterized in that: (1) Manufacturing absorbent core: fluff pulp and polymer feeding device feed to the lower coating layer, forming an absorbent layer on the lower coating layer, the upper coating layer covers the absorbent layer, the lower coating layer is folded upward, and the absorbent core is cut into short pieces to form a block-shaped absorbent core. (2) Manufacturing the absorbent layer: The liquid-permeable surface layer, the conductive layer, the absorbent core and the liquid-impermeable bottom layer are combined to form the absorbent layer; (3) Manufacturing outer garment layer: Apply adhesive to the inner layer and the middle outer layer or the outer layer of the outer garment, and apply the first elastic layer material spandex yarn between the middle outer layer and the inner layer of the outer garment and combine them. Apply the second elastic layer material spandex yarn between the outer layer and the middle outer layer of the outer garment and combine them to form the front and back pieces of the outer garment layer. The inner layer of the outer garment in the front or back piece extends 15-80mm. The inner layer of the outer garment is folded outward and glued to the upper half of the outer garment. The lower half has an un-glueed area of ​​more than 10mm to form a skirt. The middle outer layer and the inner layer of the outer garment have an un-glueed area of ​​5-40mm from 5-25mm below the waistband to form the skirt bubble part. (4) Manufacturing the menstrual pant body: The front and back pieces of the outer garment layer are combined with the absorbent layer, folded, welded and cut to form a single piece of ergonomic menstrual pant body.

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