Elastic diversion menstrual period trousers

Abstract

The utility model discloses a pair of elastic diversion menstrual period trousers, which comprises a surface layer, a diversion layer, a core body layer and a bottom film layer which are sequentially arranged from top to bottom, menstrual blood can be rapidly and downwards diverted without back seepage due to the difference of the upper porosity and the lower porosity of the diversion layer, and the skin is effectively prevented from being moist and uncomfortable. Besides, different stretch ratios are set in the waist area, the belly area and the hip area, the large stretch ratio of the waist ensures that the product is stable to wear and does not slide down, the moderate stretch ratio of the belly provides support and avoids excessive pressure, and the small stretch ratio of the hip ensures that the material can stretch along with the body curve and does not shift during movement; therefore, the problems of blocking and hip clamping and side leakage are effectively prevented, meanwhile, the breathability and the comfort degree are improved through the overall design, and consumers can obtain dry and comfortable use experience in various daily activity scenes.

Description

Technical Field

[0001] This utility model relates to the field of hygiene products, and in particular to an elastic menstrual pant that guides menstrual flow. Background Technology

[0002] Commercially available elastic menstrual panties typically use 2-3 layers of non-woven fabric bonded together with hot melt adhesive for the waistband. These panties often cause discomfort such as stuffiness and lack of breathability. Additionally, the multiple elastic bands sandwiched between the non-woven fabric layers can leave noticeable marks on the waist and abdomen, especially for larger individuals. Furthermore, commercially available elastic menstrual panties cannot maintain a stable fit during various dynamic activities such as walking, turning over in bed, doing housework, and light exercise. The material on both sides of the buttocks area, in particular, tends to shift with body movement, causing discomfort such as pinching or squeezing. In severe cases, insufficient fit between the product and the body's curves can lead to side leakage. Utility Model Content

[0003] In order to overcome the shortcomings of the existing technology, this utility model provides an elastic menstrual pant that adapts to different body types, has excellent breathability, and can maintain a good fit in various daily activities.

[0004] The technical solution adopted by this utility model to solve its technical problem is:

[0005] An elastic flow-guiding menstrual panty, comprising, from top to bottom, the following: a surface layer; a flow-guiding layer, wherein the upper and lower parts of the flow-guiding layer have different porosities; a core layer; a bottom film layer; and a waistband layer, wherein the waistband layer has an elastic partition structure with different stretch ratios in the waist, abdomen, and hip areas, wherein the stretch ratio of the waist area is greater than that of the abdomen area, and the stretch ratio of the abdomen area is greater than that of the hip area.

[0006] Furthermore, the flow-guiding layer comprises composite fibers having a core-shell structure, the core-shell structure comprising an outer shell layer and an inner core layer, the inner core layer containing functional active ingredients.

[0007] Furthermore, the composite fiber is a nanometer-diameter fiber; the core-shell structure includes an outer shell layer made of water-soluble or body fluid-responsive polymer material, and an inner core layer containing antibacterial components.

[0008] Furthermore, the waistband layer is composed of an elastic membrane and a spunbond nonwoven fabric, which are joined together by ultrasonic bonding.

[0009] Furthermore, the spunbond nonwoven fabric contains thermally responsive shape memory polymer fibers.

[0010] Furthermore, the core layer includes a water-absorbing material and a coating layer covering the water-absorbing material.

[0011] Furthermore, it includes a leak-proof partition disposed on the side of the absorbent layer, the leak-proof partition being composed of two layers of spunbond nonwoven fabric with an elastic band sandwiched in between.

[0012] Furthermore, the surface layer is made of hydrophilic nonwoven fabric, which is selected from hot-air nonwoven fabric, spunbond nonwoven fabric, pure cotton spunlace nonwoven fabric, or a composite nonwoven fabric made by mixing two of these materials through heat sealing, adhesive bonding, or spunlace technology.

[0013] Furthermore, a functional area is provided in the middle of the front and back waist and abdomen of the waist layer, and the functional area includes a printed layer printed on the waist layer.

[0014] Furthermore, in the elastic partition structure of the waist layer, the stretch ratio of the waist area is 2.6-2.8 times, the stretch ratio of the abdomen area is 2.2-2.5 times, and the stretch ratio of the buttock area is 1.8-2.1 times.

[0015] The beneficial effects of this utility model are:

[0016] This utility model of elastic menstrual pants includes, from top to bottom, a surface layer, a flow-guiding layer, a core layer, and a bottom film layer. The difference in porosity between the upper and lower layers of the flow-guiding layer allows menstrual blood to flow quickly downwards without backflow, effectively preventing skin dampness and discomfort. Furthermore, by setting different stretch ratios in the waist, abdomen, and hip areas—with a larger stretch ratio in the waist ensuring the product stays securely in place and doesn't slip—a moderate stretch ratio in the abdomen providing support without excessive pressure, and a smaller stretch ratio in the hips ensuring the material stretches with the body's curves during activity without shifting—this effectively prevents issues like groin pinching, hip pinching, and side leakage. The overall design also enhances breathability and comfort, allowing consumers to enjoy a dry and comfortable experience in various daily activities. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 This is a schematic diagram of the planar structure of this utility model;

[0019] Figure 2 This is a schematic cross-sectional view of the waist layer structure of this utility model;

[0020] Figure 3 This is a schematic cross-sectional view of the composite fiber structure of this utility model;

[0021] Figure 4 This is a cross-sectional structural diagram of the flow guide layer of this utility model.

[0022] 1. Surface layer;

[0023] 2. Flow-guiding layer; 21. Inner core layer; 22. Outer shell layer;

[0024] 3. Core layer; 31. Leak-proof partition;

[0025] 4. Base film layer;

[0026] 5. Waistband layer; 51. Elastic membrane; 52. Spunbond nonwoven fabric; 53. Printing layer. Detailed Implementation

[0027] The following will clearly and completely describe the concept, specific structure, and technical effects of this utility model in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the scope of protection of this utility model. Furthermore, all connections / linkages involved in the patent do not simply refer to direct contact between components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. The various technical features in this utility model can be combined interactively without contradicting each other.

[0028] Reference Figure 1 The elastic menstrual pants provided by this utility model are provided with a top layer 1, a diversion layer 2, a core layer 3, a bottom film layer 4, and a waist layer 5 from top to bottom.

[0029] In some embodiments, the different porosities of the upper and lower surfaces of the flow-guiding layer 2 can accelerate the downward conduction rate of the liquid, allowing menstrual blood to be rapidly conducted downwards to the core layer 3 without remaining on the surface, thus keeping the surface layer 1 dry. Specifically, the flow-guiding layer 2 can be made of a gradient structure nonwoven fabric with a higher porosity on the upper surface than on the lower surface, for example, with an upper surface pore size of 5-10 micrometers and a lower surface pore size of 15-20 micrometers, forming a unidirectional liquid conduction channel.

[0030] Furthermore, refer to Figure 3 , 4The flow-guiding layer 2 comprises composite fibers with a core-shell structure, including an outer shell layer 22 and an inner core layer 21. The inner core layer 21 contains functional active ingredients. While maintaining good flow-guiding performance, the composite fibers can release functional active ingredients through the inner core layer 21, thereby improving the overall performance of the product. In the preparation process, coaxial electrospinning technology is used to prepare the core-shell structured composite fibers. The outer shell layer 22 is made of polymer PLA material to ensure that the flow-guiding layer 2 has rapid liquid conduction function; the inner core layer 21 contains an antibacterial agent preferably extracted from natural plants as a functional active ingredient. In the manufacturing process, nano-diameter composite fibers are combed together with matrix fibers into a web, which is then bonded and cooled for reinforcement, ultimately forming the flow-guiding layer 2 with a hot-air nonwoven fabric structure. When the elastic flow-guiding menstrual panties come into contact with menstrual blood during use, the outer shell layer 22 of the composite fibers will gradually dissolve, and the antibacterial agent in the inner core layer 21 will be slowly released. This provides a continuous antibacterial effect while ensuring the basic function of the flow-guiding layer 2, thus enhancing the product's hygiene performance.

[0031] In some embodiments, the waist layer 5 is provided with an elastic partition structure, with different stretch ratios in the waist, abdomen, and hip areas. Specifically, the stretch ratio in the waist area is greater than that in the abdomen area, and the stretch ratio in the abdomen area is greater than that in the hip area. This allows the elastic flow menstrual pants to conform to the body's curves, providing sufficient tummy control and waist shaping while offering appropriate looseness in the hip area, enhancing wearing comfort. This elastic partition structure can be achieved by using elastic fibers with different elastic coefficients in different areas or by adjusting the density of the elastic fibers. Specifically, in the elastic partition structure of the waist layer 5, the stretch ratio in the waist area is 2.6-2.8 times, the stretch ratio in the abdomen area is 2.2-2.5 times, and the stretch ratio in the hip area is 1.8-2.1 times.

[0032] Furthermore, refer to Figure 2 The waistband layer 5 is composed of an elastic membrane 51 and a spunbond nonwoven fabric 52, which are joined together by ultrasonic bonding. The elastic membrane 51 is a thin film with elastic properties, made by uniformly mixing polyolefin resin, elastomer, and additives in a certain proportion and then producing it through blow molding or casting techniques. Post-treatment techniques impart odor-suppressing and soothing properties. The spunbond nonwoven fabric 52 is a nonwoven fabric made by melting polymers such as polypropylene or polyethylene and thermally responsive polymers, and then spinning, web-laying, and reinforcement techniques, with a basis weight of 10 gsm-12 gsm.

[0033] Furthermore, the spunbond nonwoven fabric 52 incorporates thermo-responsive shape memory polymer fibers. It should be noted that these thermo-responsive shape memory polymer fibers (T-SMP fibers) are functional fibers capable of triggering shape memory behavior through temperature changes. They are formed from thermo-responsive polymer materials using electrospinning and other techniques, possessing a biphasic network molecular structure with a fixed phase and a reversible phase. When the temperature reaches the phase transition point, the fibers soften and can be shaped by external force. Upon cooling, they can be re-cured; this process involves reversible deformation with temperature changes. With the addition of thermo-responsive shape memory polymer fibers, when the spunbond nonwoven fabric 52 senses a temperature exceeding 37°C, it undergoes reversible deformation along the body's curves, resulting in a more snug fit to the waist, abdomen, and hips. Simultaneously, the material's pore size increases, making the product more breathable.

[0034] In some embodiments, refer to Figure 1 The waistband layer 5 has a functional area located in the middle of the front and back waist and abdomen. This functional area is used to print a printing layer 53 on the waistband layer 5. The printing ink for the printing layer 53 contains modified mugwort extract. On one hand, mugwort extract can promote blood circulation and effectively relieve abdominal pain caused by dysmenorrhea; on the other hand, the natural aromatic components of mugwort can mask the odor of menstrual blood and other unpleasant smells, enhancing the user experience. In practical applications, the printing layer 53 can be designed with specific aesthetic patterns, ensuring functionality while enhancing the product's appearance, allowing the elastic flow-guiding menstrual pants to provide additional comfort and health care while meeting basic physiological needs.

[0035] In some embodiments, the core layer 3 includes an absorbent material and a covering layer that covers the absorbent material. The covering layer is a hydrophilic nonwoven fabric, which may be one of hot-air woven, spunbond, or pure cotton spunlace fabric. The absorbent material is a mixture of wood pulp and superabsorbent polymer in a certain proportion.

[0036] Furthermore, it includes a leak-proof partition 31 disposed on the side of the absorbent layer, the leak-proof partition 31 being composed of two layers of spunbond nonwoven fabric 52 with an elastic band sandwiched in between.

[0037] In some embodiments, the bottom membrane layer 4 is an invisible positioning PTFE breathable membrane.

[0038] In some embodiments, the surface layer 1 is made of a hydrophilic nonwoven fabric, which is selected from hot-air nonwoven fabric, spunbond nonwoven fabric 52, pure cotton spunlace nonwoven fabric, or a composite nonwoven fabric made by mixing two of these materials through heat sealing, adhesive bonding, or spunlace technology. The surface layer 1 has good hydrophilicity and breathability, and can quickly guide menstrual blood into the lower guiding layer 2. In practical applications, when the user's menstrual blood comes into contact with the surface layer 1, the surface layer 1 can quickly guide the liquid to the guiding layer 2, and the guiding layer 2, due to its different porosity, further accelerates the downward conduction of the liquid to the core layer 3 containing a composite fiber core-shell structure, thereby keeping the surface dry. At the same time, the antibacterial components in the inner core layer 21 can be activated and released under the action of liquid, providing antibacterial function and enhancing the user's comfort and hygiene.

[0039] The above is a detailed description of the preferred embodiments of the present utility model. However, the present utility model is not limited to the described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. Elastic flow-wicking menstrual pants, characterized in that, Including the settings from top to bottom: Surface layer; A flow guide layer, wherein the upper and lower porosities of the flow guide layer are different; Core layer; Base film layer; as well as The waist layer has an elastic partition structure with different stretch ratios in the waist, abdomen and hip areas, wherein the stretch ratio of the waist area is greater than that of the abdomen area, and the stretch ratio of the abdomen area is greater than that of the hip area.

2. The elastic flow-guiding menstrual pants according to claim 1, characterized in that, The flow-guiding layer comprises composite fibers having a core-shell structure, the core-shell structure comprising an outer shell layer and an inner core layer, the inner core layer containing functional active ingredients.

3. The elastic flow-guiding menstrual pants according to claim 2, characterized in that, The composite fiber is a nanometer-diameter fiber; The core-shell structure includes an outer shell layer made of a water-soluble or body fluid-responsive polymer material, and an inner core layer containing antibacterial components.

4. The elastic flow-guiding menstrual pants according to claim 1, characterized in that, The waistband layer is composed of an elastic membrane and a spunbond nonwoven fabric, which are joined together by ultrasonic bonding.

5. The elastic flow-guiding menstrual pants according to claim 4, characterized in that, The spunbond nonwoven fabric contains thermally responsive shape memory polymer fibers.

6. The elastic flow-guiding menstrual pants according to claim 1, characterized in that, The core layer includes a water-absorbing material and a coating layer covering the water-absorbing material.

7. The elastic flow-guiding menstrual pants according to claim 6, characterized in that, It includes a leak-proof partition located on the side of the absorbent layer, which is composed of two layers of spunbond nonwoven fabric with an elastic band sandwiched in between.

8. The elastic flow-guiding menstrual pants according to claim 1, characterized in that, The surface layer is made of hydrophilic nonwoven fabric, which is selected from hot-air nonwoven fabric, spunbond nonwoven fabric, pure cotton spunlace nonwoven fabric, or a composite nonwoven fabric made by mixing two of these materials through heat sealing, adhesive bonding, or spunlace technology.

9. The elastic flow-guiding menstrual pants according to claim 1, characterized in that, The waistband layer has a functional area located in the middle of the front and back waist and abdomen, and the functional area includes a printed layer printed on the waistband layer.

10. The elastic flow-guiding menstrual pants according to any one of claims 1-9, characterized in that, In the elastic partition structure of the waist layer, the stretch ratio of the waist area is 2.6-2.8 times, the stretch ratio of the abdomen area is 2.2-2.5 times, and the stretch ratio of the buttock area is 1.8-2.1 times.

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