Menstrual period trousers and production process thereof

Abstract

The invention relates to the technical field of hygienic product processing, in particular to menstrual period pants and a production process thereof.The menstrual period pants comprise an outer waistline part, an inner waistline part, a waistline covering part and a liquid absorbing part which are made of light and thin materials, all the parts are connected through glue and provided with elastic parts, and a menstrual period pants body is provided with a thickening part, a tearing part, an elastic containing part and the like; the liquid absorption part comprises a wood fiber body, a polymer body and a coating body; the production process comprises multiple steps including automatic feeding, liquid absorption part preparation, component compounding, processing treatment, packaging and sterilization and the like, and all the steps have specific process requirements. The menstrual period trousers are comfortable to wear and good in liquid absorbing and locking effect, the tearing part, the thickening part and the magic part are convenient to use, open and close, the situation that clothes do not need to be completely taken off is adapted, the production process can guarantee the product quality and performance, and the production efficiency is improved through partitioned hot pressing, precise positioning and an automatic process. And the processed menstrual period trousers can adapt to activity requirements of different parts and realize high-efficiency production.

Description

Technical Field

[0001] The present application relates to the technical field of sanitary product processing, and in particular to menstrual pants and a production process thereof. Background Art

[0002] As women's demand for more convenient menstrual care increases, the ease of donning of menstrual pants has become a key area for improvement. Traditional menstrual pants require the complete removal of outer pants, stockings, and other clothing when donning them. This is extremely inconvenient in public or in emergencies, and it fails to meet the user's need for quick change. While some menstrual pants have emerged on the market that simplify the donning process, their structural designs still have many shortcomings and fail to completely solve the cumbersome donning problem.

[0003] To improve ease of wear, some existing technologies have attempted to incorporate elastic waistband designs or optimize the pants' shape for easier donning and doffing. Other products have reduced the leg openings to reduce the need for removing outer pants. However, these solutions still require significant removal, offering limited convenience in crowded places or when time is tight, and fail to achieve the goal of allowing menstrual pants to be donned without completely removing clothing.

[0004] While existing technologies have improved the wearability of menstrual pants to some extent, they still have significant limitations. Traditional products require the complete removal of outer garments, including pants, which is cumbersome and requires a high level of space. The few products with partial opening and closing functions suffer from poor sealing, leakage, and insufficient structural stability. The opening and closing components are also easily damaged, making it difficult to strike a balance between convenience and reliability, and failing to meet user needs in a variety of scenarios.

[0005] In addition, the existing process of processing menstrual pants has the problem of elastic distribution not matching the physiological structure of the human body. The existing process usually evenly arranges the elastic threads in the front and back waist areas, without considering the difference in force between the abdomen and buttocks. The abdominal skin is thinner and women often experience bloating and pain during menstruation, while the buttocks muscle layer is thicker and more tolerant, resulting in concentrated pressure in the abdominal area, which easily forms marks and aggravates discomfort. Summary of the Invention

[0006] In order to improve the problems of inconvenient opening and closing and poor structural stability of existing menstrual pants, the present application provides a menstrual pants and a production process thereof.

[0007] In a first aspect, the present application provides a menstrual pants, which adopts the following technical solution: The menstrual pants according to claim 1, wherein the outer waistband portion and the inner waistband portion are overlapped with each other in sequence, and the liquid absorbing portion is placed between the inner waistband portion and the outer waistband portion to form a menstrual pants body; the outer waistband portion and the inner waistband portion, the inner waistband portion and the waistband covering portion, and the liquid absorbing portion and the outer waistband portion are connected by gluing and hot pressing respectively; elastic portions are glued between the outer waistband portion and the inner waistband portion, between the inner waistband portion and the waistband covering portion, and between the liquid absorbing portion and the waistband covering portion, and the elastic portions are elastic; at least two groups of thickened portions are provided on the menstrual pants body, each group of thickened portions is provided with a magic portion, and the magic portion is detachably glued to the waistband covering portion; a tear portion formed by cutting with a point-breaking knife is provided on one side of each group of thickened portions, and the tear portion is used to adapt to the opening and closing requirements of the menstrual pants body; an elastic accommodating portion is glued to the outer periphery of the menstrual pants body, and the elastic accommodating portion is used to accommodate a heating patch and is elastic.

[0008] By adopting the above technical solutions, the outer waistline, inner waistline and waist covering parts made of light and thin materials make the menstrual pants more comfortable; the adhesive connection method ensures the stable connection of each part; the setting of the elastic part makes the menstrual pants have a restraining effect, and the elastic parts arranged in zones can make the abdomen evenly stressed, reduce the marks and menstrual discomfort, and reduce the problems of easy falling off, poor fit, side leakage or leakage of menstrual pants; the setting of the tear part, thickened part and magic part makes it convenient to wear and take off the menstrual pants; the tear part can convert the menstrual pants into an openable and closable state, which is suitable for situations where clothes do not need to be completely removed; the elastic accommodation part can accommodate the heating patch and is elastic, which improves the use effect of the heating patch.

[0009] Optionally, the liquid absorption part includes multiple groups of wood fiber bodies, polymer bodies and coating bodies, the multiple groups of wood fiber bodies are evenly distributed in the coating body, and the multiple groups of wood fiber bodies have supporting and preliminary liquid absorption effects; the polymer bodies are evenly distributed on the multiple groups of wood fiber bodies, and the polymer bodies have a rapid liquid locking effect.

[0010] By adopting the above technical solution, multiple groups of wood fiber bodies are evenly distributed in the coating body to provide support and preliminary liquid absorption, and the polymer bodies are evenly distributed on the multiple groups of wood fiber bodies to achieve the effect of rapid liquid locking. The combination of the two can achieve stable liquid absorption and rapid liquid locking, reducing liquid side leakage or leakage out of menstrual pants, and the coating body provides better support for water absorption, ensuring the stability of liquid absorption and liquid locking.

[0011] In a second aspect, the present application provides a production process for menstrual pants, which adopts the following technical solution: A production process for menstrual pants, applicable to any one of the menstrual pants described in the first aspect, comprises the following steps: S1: The lower layer of toilet paper, bottom film, outer waist part, inner waist part and waist covering part are conveyed through an automatic unwinding roll with a tension mechanism; S2: Arranging the elastic parts in different areas, including elastic bands on both sides of the core, three-dimensional guard elastic bands, waist elastic bands, abdominal elastic bands, hip elastic bands, and crotch elastic bands; preparing the liquid absorption part, mixing crushed high-absorbency water-absorbing material with wood fiber, and then forming it into a mold, sequentially compounding the conductive layer non-woven fabric, the surface non-woven fabric, and the anti-side leakage non-woven fabric with a bottom film, and simultaneously gluing the elastic parts on both sides of the core and the three-dimensional guard, hot pressing, and folding to form; S3: After the outer waistline is tensioned and glued, the waist elastic bands are laminated at both ends in the width direction and intermittently pressed together to form vertical pleats. After the inner waistline is tensioned, the abdominal elastic bands, hip elastic bands, and crotch elastic bands are laminated separately and intermittently pressed together to form vertical pleats. The liquid absorbent core is then fixed and laminated with the waist ring elastic band. S4: The waist covering portion is coated with glue and laminated to the liquid absorbent core and the inner waist portion, and is laminated at intervals to form upright pleats; S5: Cut off the excess fabric, process the torn part of the abdomen with a point-breaking knife, fold it into a U shape, place a thickened part with a magic part at the intersection and cut it off; S6: Applying elastic accommodation parts to the abdominal area, gluing and then heat-pressing and fusing; applying and inspecting the discard patch, heat-pressing and fusing the junction, and then cutting and separating; S7: After folding and separating the menstrual pants, wrap them into bags or boxes and sterilize them as a whole.

[0012] By adopting the above technical solution, the automatic unwinding reel with tension mechanism transports raw materials, which can adapt to the tension of non-woven fabrics in different wrapped parts; the liquid absorption part is prepared, and the high-rate water-absorbing material is mixed with wood fiber, and after compounding, gluing elastic bands and hot pressing and folding, it can achieve stable liquid absorption and rapid liquid locking, and the conductive layer non-woven fabric plays a diversion role; the elastic bands are compounded and intermittently pressed on each waistline to form upright pleats, which can make the menstrual pants have a certain restraining effect and fit the human body, and the elastic part, that is, the elastic part in which each elastic band is arranged in a zone, can make the abdomen evenly stressed, reduce the marks and menstrual discomfort, and reduce the problems of easy falling off, poor fitting, side leakage or leakage of menstrual pants; the tear part and the thickened part are designed, the tear part can adapt to the opening and closing requirements of the menstrual pants body, and the thickened part can be used for detachable connection; the discard sticker is attached to facilitate folding, storage and fixing the shape, and hot pressing fusion and slitting and separation improve product quality; the menstrual pants after separation are folded, wrapped and packaged and sterilized to ensure product hygiene and facilitate storage and sales.

[0013] Preferably, in S1, the lower layer of toilet paper is a double-layer structure, the outer waistline portion, the inner waistline portion and the waistline covering portion are respectively made of non-woven fabrics of light and thin material, and the bottom film is made of leak-proof material.

[0014] By adopting the above technical solution, the lower layer of toilet paper with a double-layer structure can provide better support for water absorption. The outer waistline, inner waistline and waistline covering parts made of light and thin materials can form the overall structure of the menstrual pants, support the liquid absorber and wrap the body parts. The bottom film of leak-proof material can improve the leak-proof performance of the menstrual pants, block liquid leakage and maintain the stability of the liquid absorber structure, reducing the displacement problem of wood fibers mixed with polymers.

[0015] Preferably, in S2 to S4, in the composite area of ​​the waist elastic band of the outer waist part, wide-spacing point hot pressing is adopted to reduce the pressing strength per unit area and adapt to the high elasticity requirement of the waist movement; in the abdominal area of ​​the inner waist part, low-temperature linear hot pressing is adopted, and the hot pressing lines are intermittently distributed along the direction of the abdominal elastic band to reduce the damage to the softness of the material in the abdominal area; in the hip area of ​​the inner waist part, close-spacing cross hot pressing is adopted to increase the pressing density and strength, enhance the fixing effect of the hip elastic band, and adapt to the high tension requirement during hip movement; in the composite area of ​​the waist covering part and the liquid absorption core, gradient pressure hot pressing is adopted, and the pressure gradient decreases from the center of the liquid absorption core to the edge, and the temperature remains stable, ensuring the close combination of the core center and the waist covering part, and the edge remains fluffy under low-pressure hot pressing treatment.

[0016] By adopting the above technical solution and using a zoned variable parameter dynamic heat pressing method, the heat pressing parameters are set differentially based on the elastic distribution characteristics and ergonomic requirements of different areas of the outer waist and inner waist. Wide-spaced point hot pressing is used in the elastic composite area of ​​the waist at the outer waistline, which can reduce the pressing strength per unit area, adapt to the high elasticity requirements of waist movements, and avoid elasticity loss caused by excessive pressing; low-temperature linear hot pressing is used in the abdominal area of ​​the inner waistline, and the heat pressing lines are discontinuously distributed along the direction of the elastic, which not only ensures the bonding stability of the elastic and non-woven fabric, but also reduces the damage to the softness of the material in the abdominal area due to low temperature and low pressure, thereby reducing the risk of strangulation; close-spaced cross hot pressing is used in the hip area of ​​the inner waistline, which can increase the pressing density and strength, enhance the fixing effect of the hip elastic, adapt to the high tension requirements during hip movements, and reduce elastic displacement; gradient pressure hot pressing is used in the composite area of ​​the waist covering part and the liquid absorption core, and the pressure gradient decreases from the center of the core to the edge and the temperature remains stable, which can ensure the close combination of the core center and the waist covering part, prevent the core from shifting, and the edge remains fluffy due to low pressure, thereby improving the comfort of fitting the skin.

[0017] Preferably, in S2, the mass ratio of the high-rate water-absorbing material to the wood fiber is 1:1 to 3:2, and the conductive layer non-woven fabric has the diversion functions of rapid drainage, uniform diffusion, efficient penetration and physical barrier.

[0018] By adopting the above-mentioned technical solution, high-rate water-absorbing materials and wood fibers are mixed in a mass ratio of 1:1 to 3:2, so that the liquid absorption part can achieve stable liquid absorption and rapid liquid lock, reducing liquid side leakage or leakage out of menstrual pants; the conductive layer non-woven fabric has the diversion functions of rapid drainage, uniform diffusion, efficient penetration and physical barrier, and can serve as a "bridge" connecting the waist covering part and the absorption core, directly affecting the absorption efficiency, leakage prevention performance and wearing experience of sanitary products, and improving product quality.

[0019] Preferably, in S5, the tear portion is a discontinuous virtual tangent line, and the edge of the tear portion is heat-melted to prevent the thread from falling off.

[0020] By adopting the above technical solution, the tear portion is set as a discontinuous virtual tangent line, which makes it convenient to tear apart the three layers of material, namely the outer waist portion, the inner waist portion and the waist covering portion, from the virtual tangent line when the menstrual pants need to be converted into an openable and closable state; hot-melt treatment of the edge of the tear portion can prevent the thread from falling off, thereby ensuring the stability and durability of the overall structure of the menstrual pants.

[0021] Preferably, in S5, the thickened portion is placed at the junction of two menstrual pants, and magic parts are provided at both ends of the thickened portion, which are adhered to the menstrual pants through the magic parts. The thickened portion is cut in a ring shape by an arc-shaped cutting knife mechanism, and the cut parts are inspected by a visual inspection mechanism to see whether the thickened portion is missing; the thickened portion includes a thickened side waist non-woven fabric.

[0022] By adopting the above technical solution, the thickened part is placed at the junction of two menstrual pants and bonded to the menstrual pants using the magic part, thereby achieving continuous and convenient placement of the thickened part during the process of adding it to the menstrual pants, thereby improving production efficiency; the thickened part is cut off in a circular shape by an arc-shaped cutter mechanism, thereby avoiding the risk of burrs and sharp corners scratching the skin; the visual inspection mechanism is used to detect whether the thickened part is missing, thereby ensuring the production quality of the menstrual pants; the thickened part uses thickened side waist non-woven fabric, which provides a certain reinforcement effect for the menstrual pants.

[0023] Preferably, in S6, the attachment position of the discard patch is located at the center area of ​​the hip of the menstrual pants, and a visual detection mechanism is used to detect whether the discard patch is missing.

[0024] By adopting the above technical solution, the discard sticker is attached to the center area of ​​the buttocks of the menstrual pants, which makes it easy to fold and store the menstrual pants, avoids exposure of dirt, fixes the shape of the menstrual pants, and facilitates handling and classification; a visual inspection mechanism is used to detect whether the discard sticker is missing, thereby ensuring the production quality of the menstrual pants.

[0025] Preferably, in S6, the menstrual pants are in a stretched state during the heat pressing and fusing, and the embossed cutting edge is less than 5 mm.

[0026] By adopting the above technical scheme, the sanitary towel is in a tension state during hot pressing and fusion in the S6 step, and the embossed cut edge is controlled to be less than 5 mm, so that the two-side sewing size of the sanitary towel is upgraded from the original double-row embossing to single-row embossing with a cut edge less than 5 mm, the product has an almost traceless surface, the appearance of the product is improved, the wearing comfort is improved, the friction and discomfort caused by the wide or uneven embossed cut edge on the skin are reduced, and the overall appearance of the product is optimized, so that the product is more in line with the needs of consumers for high-quality and beautiful products.

[0027] In summary, the present application has the following beneficial effects: 1. The outer waist circumference part, the inner waist circumference part and the waist circumference covering part of the thin material make the sanitary towel more comfortable; the adhesive connection mode ensures stable connection of each part; the elastic part is provided to make the sanitary towel have a binding effect, the zoned elastic part can make the abdominal force uniform, reduce the marks and menstrual discomfort, and reduce the problems of easy falling off, poor fitting, side leakage or leakage of the sanitary towel; the tear part, the thickened part and the magic part are provided to facilitate wearing and taking off of the sanitary towel; the tear part can convert the sanitary towel into an openable state, which is suitable for the case of not needing to completely remove the clothes; the elastic accommodating part can accommodate the warm patch and has elasticity, which improves the use effect of the warm patch; 2. The tear part is suitable for the opening and closing needs of the sanitary towel body, and the clothes only need to be removed below the hips and above the knees to wear and take off the sanitary towel; 3. The elastic accommodating part can accommodate the warm patch and has elasticity, which improves the use effect of the warm patch; 4. The high molecular bodies in the liquid absorbing part are uniformly distributed on the multiple groups of wood fiber bodies, stable liquid absorption and rapid liquid locking are realized, and the problems of side leakage or leakage of the sanitary towel are reduced; 5. The dynamic hot pressing mode with zoned variable parameters is adopted to adapt to the distribution characteristics of the elastic band in different regions and the ergonomics needs of the human body, avoid the loss of elasticity caused by excessive pressing, reduce the risk of marks, reduce the displacement of the elastic band, and improve the comfort of fitting the skin. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is an unfolded view of a sanitary towel disclosed by an embodiment of the present application; Figure 2 is a cut view of a sanitary towel disclosed by an embodiment of the present application.

[0029] Explanation of reference signs: 1, sanitary towel; 2, outer waist circumference part; 3, inner waist circumference part; 4, waist circumference covering part; 5, liquid absorbing part; 6, elastic part; 61, elastic band on both sides of the core body; 62, three-dimensional containment elastic band; 63, waist elastic band; 64, abdominal elastic band; 65, hip elastic band; 66, lifting elastic band; 7, thickened part; 71, magic part; 8, tear part; 9, elastic accommodating part. DETAILED DESCRIPTION

[0030] The present application is further described in detail below with reference to the accompanying drawings.

[0031] In the first aspect, the present application discloses a menstrual pants, see Figure 1 and Figure 2 , including an outer waistline portion 2, an inner waistline portion 3, a waistline covering portion 4, a liquid absorbing portion 5, an elastic portion 6, a thickening portion 7, a magic portion 71, a tear portion 8 and an elastic accommodating portion 9. Specifically, the inner waistline portion 3 and the waistline covering portion 4 are sequentially overlapped on the inner waistline portion 3, and the liquid absorbing portion 5 is placed between the inner waistline portion 3 and the outer waistline portion 2 to form a menstrual pants 1 body. The outer waistline portion 2 and the inner waistline portion 3, the inner waistline portion 3 and the waistline covering portion 4, and the liquid absorbing portion 5 and the outer waistline portion 2 are respectively connected by adhesive hot pressing. The outer waistline portion 2 and the inner waistline portion 3, the inner waistline portion 3 and the waistline covering portion 4 Elastic parts 6 are glued between the liquid absorption part 5 and the waist covering part 4 respectively. The elastic parts 6 are elastic. At least two groups of thickened parts 7 are provided on the menstrual pants 1. Each group of thickened parts 7 is provided with a magic part 71. The magic part 71 is detachably bonded to the waist covering part 4. A tearing part 8 formed by cutting with a point-breaking knife is provided on one side of each group of thickened parts 7. The tearing part 8 is used to adapt to the opening and closing requirements of the menstrual pants 1. An elastic accommodating part 9 is glued to the periphery of the menstrual pants 1. The elastic accommodating part 9 is used to accommodate a heating patch and is elastic, thereby achieving the beneficial effects of making the menstrual pants 1 have good fit, comfort and convenience of use. The rational setting of the multi-layer structure of this technology and the synergistic effect of various components can better adapt to the needs of the human body and reduce problems such as side leakage. The opening and closing design and the heating patch accommodation design enhance the user experience.

[0032] Specifically, the outer waist portion 2 comprises an outer waist non-woven fabric, which is light and thin, can reduce the overall weight of the menstrual pants 1 and improve wearing comfort. The outer waist non-woven fabric is connected to the inner waist portion 3 and the elastic portion 6 by gluing and hot-melt bonding.

[0033] Specifically, the inner waist portion 3 includes an inner waist non-woven fabric, and the inner waist portion 3 is connected to the outer waist portion 2, the waist covering portion 4, the elastic portion 6 and the liquid absorption portion 5 by gluing and hot pressing. When connected to the outer waist portion 2, the glue is evenly applied on the contact surface of the two to ensure a tight connection.

[0034] Specifically, the waist cover portion 4 comprises a nonwoven waist cover fabric, which is used to wrap around the user's private parts, buttocks, abdomen, and other body parts, providing both protection and coverage. In this embodiment, the outer waist nonwoven fabric, inner waist nonwoven fabric, and waist cover nonwoven fabric are each made of soft, air-through nonwoven fabrics with excellent breathability. In other embodiments, SMS nonwoven fabrics can be used, which offer excellent waterproof and barrier properties. The waist cover portion 4 is attached to the inner waist portion 3 and the elastic portion 6 via adhesive bonding and hot pressing.

[0035] Specifically, the liquid absorption part 5 includes multiple groups of wood fiber bodies, polymers and coatings. The multiple groups of wood fiber bodies are evenly distributed in the coating. Each group of wood fiber bodies includes coniferous wood fibers, which have good support and initial liquid absorption effects; in other embodiments, they can be hardwood fibers. The polymers are evenly distributed on the multiple groups of wood fiber bodies, and the polymers include high-rate water-absorbing resins. The high-rate water-absorbing resins can quickly absorb and lock liquids, reducing side leakage. The coating includes a lower layer of toilet paper. The lower layer of toilet paper uses a two-layer toilet paper support, which can provide support for water absorption and prevent the wood fibers and polymers from leaking.

[0036] Specifically, the elastic portion 6 includes elastic bands 61 on both sides of the core, three-dimensional elastic bands 62 for the waist, elastic bands 63 for the abdomen, elastic bands 64 for the hips, and elastic bands 66 for the crotch. Leveraging the elasticity of the elastic bands, the menstrual pants 1 achieve a certain degree of restraint. The elastic bands 6 are arranged in zones, with fewer bands around the abdomen and more around the hips. This ensures even stress distribution around the abdomen, reducing marks and menstrual discomfort.

[0037] The elastic portion 6 is connected to the outer waist portion 2, the inner waist portion 3 and the waist covering portion 4 respectively by gluing and hot pressing. During gluing, it is necessary to ensure that the elastic band is in a taut state to ensure its elastic effect.

[0038] Specifically, the thickened portion 7 includes thickened side waist non-woven fabrics, which can enhance the strength and durability of both sides of the menstrual pants 1.

[0039] Further, see Figure 1 and Figure 2 Each set of thickening parts 7 is provided with a magic part 71, and the thickening part 7 is detachably bonded to the waist covering part 4 through the magic part 71. When in use, the user can easily open or close the thickening part 7 as needed.

[0040] The magic part 71 includes a magic buckle, which has a hook surface and is bonded to the non-woven fabric on the abdomen for easy disassembly and installation.

[0041] The tearing portion 8 includes a virtual tangent line formed by a dotted cutting knife. To convert the menstrual pant 1 into an openable and closable state, the three layers of nonwoven fabric—the outer waist nonwoven fabric, the inner waist nonwoven fabric, and the waist cover nonwoven fabric—are torn apart along the virtual tangent line. The tangent line, combined with the Velcro fasteners attached to the side waist nonwoven fabrics, secures the pant 1. The virtual tangent line ensures the integrity of the pant 1 while allowing for easy tearing when needed.

[0042] The elastic container 9 comprises an elastic bag, constructed from two layers of lightweight nonwoven fabric bonded with 1:2.2 elastic bands via gluing and hot pressing. This bag can accommodate heat-releasing items such as heat pads, heating pads, and other heat-releasing patches. In this embodiment, the lightweight nonwoven fabric can be a spunbond nonwoven, which is lightweight yet strong. In other embodiments, it can be a meltblown nonwoven, which offers excellent filtration properties.

[0043] The elastic receiving portion 9 is fixed to the outer periphery of the menstrual pants 1 by gluing and hot pressing, which can effectively improve the use effect of the heating patch and bring the heat closer to the abdomen.

[0044] The implementation principle of this embodiment is: Through the rational combination of multi-layer structures and the design of special components, the fit, comfort, and ease of use are improved. The use of multi-layer non-woven fabric reduces weight and improves breathability. The zoned arrangement of the elastic portion 6 adapts to the differences in force on different parts of the human body, reducing marks and discomfort. The design of the tear portion 8 and the magic portion 71 facilitates the opening and closing of the menstrual pants 1 without completely removing the clothing. The provision of the elastic accommodation portion 9 improves the use of the heating patch. Compared with traditional menstrual pants 1, these solve the problems of loose connections, poor fit, inconvenient opening and closing, and poor use of the heating patch, and represent a significant improvement and contribution to the existing technology.

[0045] In a second aspect, this embodiment provides a production process for menstrual pants, comprising the following steps: S1: The lower layer of toilet paper, the bottom film, the outer waist portion 2, the inner waist portion 3 and the waist covering portion 4 are conveyed by an automatic unwinding roll with a tension mechanism; Specifically, the raw materials required for production are delivered via an automatic unwinding mechanism. Each set of unwinding reels is equipped with a tension adjustment mechanism to adapt the tension requirements of the non-woven fabric in different areas. The raw materials delivered include the lower layer of toilet paper, the base film, the outer waistband 2, the inner waistband 3, and the waistband cover 4. The lower layer of toilet paper is a double-layer structure, which is used to wrap the liquid-absorbing core. The base film is made of a leak-proof material to improve the leak-proof performance of the menstrual pants 1, prevent liquid leakage, and stabilize the absorbent core structure. The outer waistband 2, the inner waistband 3, and the waistband cover 4 are each made of a thin and lightweight non-woven fabric, forming the overall structure of the menstrual pants 1, supporting the liquid-absorbing core, and wrapping the private parts, buttocks, and abdomen of the body, respectively.

[0046] S2: Arrange the elastic portion 6 in sections. The elastic portion 6 includes elastic bands 61 on both sides of the core, elastic bands 62 for the three-dimensional protection, elastic bands 63 for the waist, elastic bands 64 for the abdomen, elastic bands 65 for the hips, and elastic bands 66 for the crotch. Prepare the liquid absorption portion 5 by mixing crushed high-absorbency water-absorbing material with wood fiber, forming the mixture through a mold, and then laminating the conductive layer non-woven fabric, the surface non-woven fabric, and the anti-side leakage non-woven fabric with a bottom film. Simultaneously, adhere the elastic portion 6 to both sides of the core and the three-dimensional protection, heat-press, and fold to form the mixture. Specifically, the elastic part 6 is arranged in zones, and includes elastic bands 61 on both sides of the core, three-dimensional protective elastic bands 62, waist elastic bands 63, abdomen elastic bands 64, hip elastic bands 65 and crotch elastic bands 66, which are arranged in ergonomic zones to ensure elastic adaptation of different parts.

[0047] To prepare the liquid absorption part 5, the high-rate water-absorbing material is crushed and then evenly mixed with wood fiber at a mass ratio of 1:1 to 3:2, and then formed into a mixed absorbent of a preset shape and size through a liquid absorption core mold.

[0048] The conductive layer non-woven fabric with four-fold diversion functions of rapid drainage, uniform diffusion, efficient penetration and physical barrier is conveyed. After the adhesive is applied on its surface, it is covered on the mixed absorbent to form a preliminary support and liquid guiding structure. The covering body, i.e. the lower layer of toilet paper, is transported to the above structure, and the mixed absorbent is tightly combined with the lower layer of toilet paper by punching. The surface non-woven fabric and the anti-side leakage non-woven fabric with a bottom film are compounded in sequence, the surface non-woven fabric is coated with glue and then pressed, and the corresponding elastic parts 6 are glued to both sides of the core and the three-dimensional guardrail at the same time. After being fixed by hot pressing, it is folded into shape to obtain a liquid absorption core.

[0049] S3: After the outer waistline 2 is tensioned and glued, the waist elastic bands 63 are laminated and tightened at both ends in the width direction, and are intermittently pressed together to form upright pleats; after the inner waistline 3 is tensioned, the abdomen elastic bands 64, hip elastic bands 65, and crotch elastic bands 66 are laminated and tightened together to form upright pleats, and then the liquid absorbent core is fixed and laminated with the waist ring elastic band; Specifically, the outer waistline 2 is tightened by a tension adjustment mechanism and then coated with adhesive. Elastic waist bands 63 are tensioned and fed to both ends of the outer waistline 2 in the width direction. They are then glued and secured by a guided pressing mechanism. Wide-spaced, point-by-point hot pressing is employed to reduce the unit area strength and form vertical pleats, adapting to the high elasticity required for waist movement. The inner waistline 3 is processed and glued and pressed after the tension is adjusted. The abdominal elastic band 64, the hip elastic band 65 and the crotch elastic band 66 in a taut state are respectively delivered to the two ends in the width direction and glued and fixed in sequence. The abdominal area uses low-temperature linear heat pressing, with the heat pressing lines distributed intermittently along the direction of the elastic band to reduce damage to the material's softness and reduce the risk of strangulation marks. The hip area uses closely spaced cross heat pressing to increase the pressing density and strength, enhance the elastic fixation effect, and adapt to high-tension hip movements. The liquid absorbing core is glued and fixed to a preset position of the inner waist portion 3, and then waist annular elastic bands are glued to both ends of the core in the width direction and fixed by heat pressing.

[0050] S4: The waist covering portion 4 is coated with glue and then laminated to the liquid-absorbing core and the inner waist portion 3, and then laminated at intervals to form upright pleats; After the adhesive is applied to the surface of the waist covering part 4, it is covered on the liquid absorption core and the inner waist part 3. Through the gradient pressure hot pressing method, the pressure gradient decreases from the center of the core to the edge, and the temperature remains stable. The high pressure in the center of the liquid absorption core ensures a tight bond to prevent displacement, and the low pressure at the edge keeps it fluffy to improve the skin fit and comfort.

[0051] S5: Cut off the excess fabric, process the abdominal tear portion 8 with a point-breaking knife, fold it into a U shape, place the thickened portion 7 with the magic portion 71 at the intersection and cut it off; Specifically, excess fabric between two adjacent liquid-absorbing cores is cut off to obtain the initially shaped unfolded menstrual pants 1.

[0052] The tearing parts 8 are processed at both ends of the menstrual pants 1 corresponding to the abdomen through a point-breaking knife mechanism. The tearing parts 8 are discontinuous virtual tangent lines, and the edges are heat-melted to prevent the threads from falling off.

[0053] The unfolded menstrual pants 1 are folded into a U shape, and a thickened part 7, i.e., a thickened side waist non-woven fabric, is placed at the intersection of two menstrual pants 1. Magic parts 71 are provided at both ends of the thickened part 7, and the magic parts 71 are bonded to the menstrual pants 1.

[0054] An arc-shaped cutter mechanism is used to cut the thickened portion 7 in a circular manner to avoid scratches caused by burrs. A visual inspection mechanism is used to detect whether the thickened portion 7 is missing to ensure the installation quality.

[0055] S6: Apply the elastic receiving portion 9 to the abdominal area, glue it, and then heat-press and fuse it; apply the discard patch and inspect it, heat-press and fuse the junction, and then cut it into pieces; Specifically, an elastic receiving portion 9 is attached to the abdominal area of ​​the menstrual pants 1 and fixed by hot pressing after gluing. The elastic receiving portion 9 is used to place the heating patch.

[0056] A discard patch is attached to the center area of ​​the buttocks of the menstrual pants 1, and a visual inspection mechanism is used to detect whether the discard patch is missing.

[0057] The middle part of the thickened part 7 at the junction of the menstrual pants 1 is hot-pressed and fused. During the fusion, the menstrual pants 1 is in a tensioned state, so that the seam size on both sides of the menstrual pants 1 is upgraded from the original double-row embossing to a single-row embossing with a cutting edge less than 5 mm, so that the seams on both sides of the menstrual pants 1 are approximately seamless.

[0058] The fused portion is cut by a cutting mechanism to separate the continuous menstrual pants 1 . After cutting, each group of thickened portions 7 is divided into two halves, which belong to two adjacent menstrual pants 1 .

[0059] S7: The folded and separated menstrual pants 1 are packaged into a bag or box shape and then sterilized as a whole.

[0060] Specifically, the separated menstrual pants 1 are folded into a rectangular shape, packaged into bags or boxes after being coated, and the whole is sent to a sterilizing device for sterilization to complete the production.

[0061] The above scheme adopts an automatic unwinding roll with a tension mechanism to transport raw materials, which can adapt to the tension of non-woven fabrics in different wrapped parts; prepare the liquid absorption part 5, mix the high-rate water-absorbing material with wood fiber, and form it by compounding, gluing elastic bands and hot pressing folding, which can achieve stable liquid absorption and rapid liquid locking, and the conductive layer non-woven fabric plays a diversion role; the elastic bands are compounded and spaced and pressed at intervals on each waistline to form upright pleats, which can make the menstrual pants 1 have a certain restraining effect and fit the human body, and the elastic part 6, that is, each elastic band, is divided and pressed. The elastic parts 6 arranged in different areas can make the abdomen bear the force evenly, reduce the marks and discomfort during menstruation, and reduce the problems of easy falling off, poor fit, side leakage or leakage of the menstrual pants 1; the tear part 8 and the thickened part 7 are designed, the tear part 8 can adapt to the opening and closing requirements of the menstrual pants 1, and the thickened part 7 can be used for detachable connection; the discard sticker is attached for easy folding, storage and fixing of the shape, and hot pressing, fusing and slitting to improve product quality; the menstrual pants 1 after separation are folded, wrapped and packaged and sterilized to ensure product hygiene and facilitate storage and sales.

[0062] This technical solution utilizes zoned heat pressing, precise positioning, and an automated process to produce high-quality menstrual pants. 1 Optimized raw material handling and processing ensures the product's essential performance. The zoned heat pressing method adapts to the needs of different body parts, enhancing elasticity, comfort, and stability. Inspection mechanisms at each step ensure product quality. Compared to traditional production processes, this solution addresses issues such as loose connections, irrational elasticity distribution, and lack of aesthetic appeal.

[0063] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention, and should all be included in the scope of protection of the present invention.

Claims

1. A menstrual pants (1), characterized in that: The menstrual pants (1) comprise an outer waistline portion (2) made of a light and thin material, an inner waistline portion (3), a waistline covering portion (4), and a liquid absorbing portion (5), wherein the inner waistline portion (3) and the waistline covering portion (4) are sequentially superimposed on the inner waistline portion (3), and the liquid absorbing portion (5) is placed between the inner waistline portion (3) and the outer waistline portion (2), thereby forming a menstrual pants (1) body; The outer waistline portion (2) and the inner waistline portion (3), the inner waistline portion (3) and the waistline covering portion (4), and the liquid absorbing portion (5) and the outer waistline portion (2) are connected by adhesive hot pressing. Elastic parts (6) are respectively glued between the outer waistline part (2) and the inner waistline part (3), between the inner waistline part (3) and the waistline covering part (4), and between the liquid absorption part (5) and the waistline covering part (4), and the elastic parts (6) are elastic; The menstrual pants (1) are provided with at least two groups of thickened parts (7), each group of thickened parts (7) is provided with a magic part (71), and the magic part (71) is detachably bonded to the waist covering part (4); Each set of thickened portions (7) is provided with a tear portion (8) formed by cutting with a point-breaking knife on one side, and the tear portion (8) is used to adapt to the opening and closing requirements of the menstrual pants (1); An elastic accommodating portion (9) is glued to the outer periphery of the menstrual pants (1), and the elastic accommodating portion (9) is used to accommodate the heating patch and has elasticity.

2. The menstrual pants (1) according to claim 1, characterized in that: The liquid absorbing part (5) comprises multiple groups of wood fiber bodies, polymer bodies and a coating body, wherein the multiple groups of wood fiber bodies are evenly distributed in the coating body, and the multiple groups of wood fiber bodies have supporting and preliminary liquid absorbing effects; the polymer bodies are evenly distributed on the multiple groups of wood fiber bodies, and the polymer bodies have a rapid liquid locking effect.

3. A production process for menstrual pants (1), applied to a menstrual pants (1) according to any one of claims 1-2, characterized in that: The steps include: S1: The lower layer of toilet paper, the base film, the outer waist portion (2), the inner waist portion (3) and the waist covering portion (4) are conveyed through an automatic unwinding roll with a tension mechanism; S2: Arranging the elastic part (6) in different areas, the elastic part (6) includes elastic bands (61) on both sides of the core, three-dimensional protective bands (62), waist elastic bands (63), abdomen elastic bands (64), buttocks elastic bands (65) and crotch elastic bands (66); preparing the liquid absorption part (5), mixing the crushed high-rate water-absorbing material with wood fiber, and then forming the mixture into a mold, sequentially compounding the conductive layer non-woven fabric, the surface non-woven fabric and the anti-side leakage non-woven fabric with a bottom film, and simultaneously gluing the elastic part (6) on both sides of the core and the three-dimensional protective bands, hot pressing, and folding to form the mixture; S3: After the outer waistline (2) is tension-adjusted and glue-coated, the waist elastic bands (63) are compounded and stretched at both ends in the width direction, and are intermittently pressed to form upright folds; after the inner waistline (3) is tension-adjusted, the abdomen elastic bands (64), hip elastic bands (65) and crotch elastic bands (66) are compounded and stretched, and are intermittently pressed to form upright folds, and then the liquid absorption core is fixed and the waistline annular elastic band is compounded; S4: The waist covering portion (4) is coated with glue and laminated to the liquid absorbing core and the inner waist portion (3), and is intermittently pressed to form upright pleats; S5: Cut off the excess fabric, process the abdominal tear part (8) with a point cutting knife, fold it into a U shape, place the thickened part (7) with the magic part (71) at the intersection and cut it off; S6: attaching an elastic receiving portion (9) to the abdominal area, gluing and then hot-pressing and fusing; attaching and inspecting the discard patch, hot-pressing and fusing the junction, and then cutting and separating the pieces; S7: The menstrual pants (1) after being folded and separated are packaged into a bag or box shape and then sterilized as a whole.

4. The production process of menstrual pants (1) according to claim 3, characterized in that: In S1, the lower layer of toilet paper is a double-layer structure, the outer waistline part (2), the inner waistline part (3) and the waistline covering part (4) are respectively made of light and thin non-woven fabrics, and the bottom film is made of leak-proof material.

5. The production process of menstrual pants (1) according to claim 3, characterized in that: In S2 to S4, in the composite area of ​​the waist elastic band (63) of the outer waistline (2), wide-spaced point heat pressing is used to reduce the unit area pressing strength and adapt to the high elasticity requirements of waist movement; In the abdominal area of ​​the inner waistline (3), low-temperature linear hot pressing is used, and the hot pressing lines are intermittently distributed along the direction of the abdominal elastic band (64), thereby reducing the damage to the softness of the material in the abdominal area; In the hip area of ​​the inner waistline (3), close-pitch cross heat pressing is used to increase the pressing density and strength, enhance the fixing effect of the hip elastic (65), and adapt to the high tension requirements during hip movement; In the composite area of ​​the waist covering part (4) and the liquid absorbing core, gradient pressure hot pressing is adopted, and the pressure gradient decreases from the center to the edge of the liquid absorbing core, and the temperature is kept stable, thereby ensuring that the center of the core and the waist covering part (4) are tightly combined, and the edge remains fluffy under low pressure hot pressing treatment.

6. The production process of menstrual pants (1) according to claim 3, characterized in that: In S2, the mass ratio of the high-rate water-absorbing material to the wood fiber is 1:1 to 3:2, and the conductive layer non-woven fabric has the diversion functions of rapid drainage, uniform diffusion, efficient penetration and physical barrier.

7. The production process of menstrual pants (1) according to claim 3, characterized in that: In S5, the tearing portion (8) is a discontinuous virtual tangent line, and the edge of the tearing portion (8) is heat-melted to prevent the thread from falling off.

8. The production process of menstrual pants (1) according to claim 3, characterized in that: In S5, the thickened portion (7) is placed at the junction of two menstrual pants (1), and magic parts (71) are provided at both ends of the thickened portion (7). The thickened portion (7) is adhered to the menstrual pants (1) through the magic parts (71). The thickened portion (7) is cut off in an annular manner by an arc-shaped cutting mechanism, and the cut parts are inspected by a visual inspection mechanism to see whether the thickened portion (7) is missing. The thickened portion (7) comprises thickened side waist non-woven fabric.

9. The production process of menstrual pants (1) according to claim 3, characterized in that: In S6, the discard patch is attached to the center area of ​​the buttocks of the menstrual pants (1), and a visual detection mechanism is used to detect whether the discard patch is missing.

10. The production process of menstrual pants (1) according to claim 3, characterized in that: In S6, during the heat-pressing fusion, the menstrual pants (1) are in a tensioned state, and the embossed cutting edge is less than 5 mm.

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