Manufacturing method of pants-shaped hygienic product and pants-shaped hygienic product

Abstract

The invention relates to the technical field of hygienic products, and particularly discloses a manufacturing method of a pants-type hygienic product and the pants-type hygienic product. According to the manufacturing method of the pants-type hygienic product, the elastic yarn layer is compounded to the elastic yarn area of the first cloth body through colloid to form the first combining piece, and then the first combining piece is subjected to viscosity reduction treatment. The viscosity reduction treatment can effectively reduce the viscosity of the surface of the first connector, so that the gluing surface of the first connector is prevented from being adhered to parts such as a clamping roller for guiding. Therefore, after the viscosity reduction treatment, the combination area of the elastic yarn layer and the first cloth body can be directly transmitted without covering the second cloth body, so that the number of layers of the pants-type hygienic product in the corresponding position of the elastic yarn area can be reduced, and the air permeability and the heat dissipation performance of the elastic yarn area are improved. In practical application, the elastic yarn area can be configured to be a waistline area of the pants-type hygienic product so as to improve the comfort of a wearer after wearing the pants-type hygienic product. Meanwhile, the problem that the membrane piece is prone to falling can be solved by arranging the elastic wire layer.

Description

Technical Field

[0001] The present application relates to the technical field of sanitary products, and in particular to a method for manufacturing a trouser-type sanitary product and the trouser-type sanitary product. Background Art

[0002] Pants-type sanitary products refer to items with a pants-like structure and absorbent function, such as baby diapers and adult nursing pants. Taking baby diapers as an example, they can absorb and store children's excrement after being worn by growing children.

[0003] Typically, pant-type sanitary products need to fit snugly around the wearer's waist to prevent them from sagging. Accordingly, pant-type sanitary products are often equipped with an elastic waistband. This elastic waistband is made of stretchy fabric and, when worn, tightens and conforms to the wearer's body, accommodating various postures, such as crawling, standing, and walking.

[0004] There are two common methods for preparing elastic waistbands. The first involves gluing elastic yarn onto a non-woven fabric. This involves bonding the elastic yarn to a first layer of non-woven fabric, applying glue to the yarn to bond it to the first layer. A second layer of non-woven fabric is then placed over the elastic yarn, and finally, the first layer is folded over the second layer to form a sealed edge. The second method involves gluing a polyurethane film onto a first layer of non-woven fabric, and finally, folding the first layer over the polyurethane film to form a sealed edge.

[0005] In the first method, after folding the first layer of non-woven fabric, the elastic waist area will form a total of four-layer structure, which are: the first layer of non-woven fabric, the elastic silk layer, the second layer of non-woven fabric and the first layer of non-woven fabric (after folding). This makes the elastic waist area have a higher number of layers, resulting in reduced breathability and heat dissipation, which ultimately affects the wearer's comfort.

[0006] In the second method, after folding the first layer of non-woven fabric, the elastic waistband is formed into a three-layer structure: from bottom to top: the first layer of non-woven fabric, the membrane, and the first layer of non-woven fabric (folded). The membrane can be perforated to solve the problem of material impermeability. However, the membrane's elasticity is poorly retained, and there is a risk of irreversible damage from stretching. During wear, the elastic waistband loses its elasticity due to the wearer's movements, causing the pants to sag under gravity when loaded, leading to slippage and leakage, which affects the pants' performance. Summary of the Invention

[0007] In view of this, the purpose of this application is to provide a method for manufacturing a pant-type sanitary product and a pant-type sanitary product, which is used to solve the problem that the waist area of ​​existing pant-type sanitary products cannot achieve both good air permeability and heat dissipation and is not easy to fall.

[0008] To achieve the above technical objectives, the present application provides, in a first aspect, a method for manufacturing a pant-type sanitary product, comprising:

[0009] Compounding the elastic yarn layer with the elastic yarn region of the first fabric body via a glue to form a first bonding member;

[0010] performing a viscosity reduction treatment on the first bonding member to form a second bonding member;

[0011] The second cloth body is laid on the interlayer area of ​​the second connecting member, and the interlayer area is staggered or partially overlapped with the elastic yarn area.

[0012] Furthermore, after laying the second fabric on the interlayer area of ​​the second connecting member, the method further includes:

[0013] Laying the absorbent core on the second fabric;

[0014] The first cloth body is folded upward along a preset folding line to form a folding surface, and the folding surface at least covers the elastic thread area and the side edge of the absorbent core.

[0015] Furthermore, the glue is hot melt adhesive;

[0016] The viscosity reduction treatment includes: spraying a low-temperature medium onto the elastic yarn area.

[0017] Furthermore, the low-temperature medium includes: low-temperature airflow and a viscosity reducer.

[0018] Furthermore, the elastic thread layer includes a plurality of elastic threads;

[0019] The denier of the elastic yarn is 70-240D.

[0020] Furthermore, the elastic yarn area includes a plurality of sub-elastic yarn areas;

[0021] In the step of compounding the elastic yarn layer with the elastic yarn area of ​​the first cloth body through the glue, a plurality of elastic yarns are arranged in each of the elastic yarn sub-areas at predetermined intervals;

[0022] The preset spacing is 1-2 mm.

[0023] Furthermore, the number of the sub-elastic yarn areas is multiple;

[0024] The interval between adjacent sub-elastic yarn areas is 8-15 mm.

[0025] Furthermore, the stretching ratio of the elastic thread is 2.5-3.2 times.

[0026] A second aspect of the present application provides a method for manufacturing a pant-type sanitary product, comprising:

[0027] Compounding the elastic silk layer with the first cloth body via glue to form a first bonding member;

[0028] performing a viscosity reduction treatment on the first bonding member to form a second bonding member;

[0029] Laying the second connecting member on the elastic yarn area on the third fabric body;

[0030] Laying the second fabric body on the interlayer area of ​​the third fabric body, wherein the interlayer area and the elastic yarn area are staggered or partially overlapped;

[0031] Laying the absorbent core on the second fabric;

[0032] The third fabric body is folded upward along a preset folding line to form a folding surface, and the folding surface at least covers the elastic thread area and the side edge of the absorbent core.

[0033] A third aspect of the present application provides a pant-type sanitary product manufactured by any of the above-mentioned methods for manufacturing a pant-type sanitary product.

[0034] As can be seen from the above technical solutions, the present application provides a method for manufacturing a pant-type sanitary product and a pant-type sanitary product; in the method for manufacturing a pant-type sanitary product, the elastic silk layer is compounded with the elastic silk area of ​​the first fabric body through a glue to form a first bonding member, and then the first bonding member is subjected to a viscosity reduction treatment. The viscosity reduction treatment can effectively reduce the viscosity of the surface of the first bonding member to prevent the adhesive surface of the first bonding member from adhering to components such as the guide roller. Therefore, after the viscosity reduction treatment, the bonding area between the elastic silk layer and the first fabric body does not need to be covered with the second fabric body and can be directly transferred, thereby reducing the number of layers of the pant-type sanitary product at the corresponding position of the elastic silk area, thereby improving the air permeability and heat dissipation of the elastic silk area.

[0035] In practical applications, the elastic yarn area can be configured as the waistband of panty-type sanitary products to enhance wearer comfort. Furthermore, the elastic yarn layer exhibits excellent elasticity and is less susceptible to irreversible stretch damage. Therefore, it maintains good elasticity during wear, preventing the membrane from sagging. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0037] Figure 1 A process diagram of a method for manufacturing a pant-type sanitary product provided in an embodiment of the present application;

[0038] Figure 2 A top view of the second coupling member during the manufacturing process of a pant-type sanitary product according to an embodiment of the present application;

[0039] Figure 3 A partial schematic diagram of a method for manufacturing a pant-type sanitary product provided in an embodiment of the present application after folding the first fabric body;

[0040] Figure 4 A side view of a method for manufacturing a pant-type sanitary product provided in an embodiment of the present application, wherein the elastic yarn area and the interlayer area partially overlap;

[0041] Figure 5 Another process diagram of a method for manufacturing a pant-type sanitary product provided in an embodiment of the present application;

[0042] Figure 6 This is an overall schematic diagram of a method for manufacturing a pant-type sanitary product provided in an embodiment of the present application after folding the first fabric body;

[0043] Figure 7 A top perspective view of a pant-type sanitary product provided in an embodiment of the present application;

[0044] Figure 8 A process diagram of a method for manufacturing a pant-type sanitary product provided in another embodiment of the present application;

[0045] Figure 9 A top view of a first combining member in a method for manufacturing a pant-type sanitary product provided in another embodiment of the present application;

[0046] In the picture:

[0047] 10. Elastic yarn layer; 11. Elastic yarn; 20. Gel; 30. First fabric; 31. Elastic yarn area; 311. Sub-elastic yarn area; 32. Interlayer area; 33. Folding area; 34. Third elastic yarn; 40. Second fabric; 50. Second elastic yarn; 60. Absorbent core; 70. Third fabric;

[0048] X-axis direction: first direction; Y-axis direction: second direction. DETAILED DESCRIPTION

[0049] The following will clearly and completely describe the technical solutions of the embodiments of this application in conjunction with the accompanying drawings. Obviously, the embodiments described are part of the embodiments of this application, not all of them. Based on the embodiments in this specification, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection requested by this application.

[0050] In the description of the embodiments of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, they should not be understood as limiting the embodiments of the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0051] In the description of the embodiments of the present application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, replaceable connections, or integral connections. They can also refer to mechanical connections or electrical connections. They can also refer to direct connections or indirect connections through an intermediate medium. They can also refer to internal connections between two components. For those skilled in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0052] In a first aspect of the embodiments of the present application, a method for manufacturing a pant-type sanitary product is provided, wherein the pant-type sanitary product can be adult care pants such as pull-up pants, or diapers for infants and young children.

[0053] In this example, see Figures 1 to 3 , the manufacturing method of the pants-type sanitary product includes:

[0054] S1, compounding the elastic silk layer 10 to the elastic silk region 31 of the first fabric body 30 via the glue 20 to form a first bonding member;

[0055] S2, performing viscosity reduction treatment on the first combined component to form a second combined component;

[0056] S3. Lay the second fabric 40 on the interlayer area 32 on the second connecting member, with the interlayer area 32 and the elastic yarn area 31 being staggered or partially overlapped.

[0057] In this manufacturing method, the elastic yarn layer 10 includes a plurality of elastic yarns 11, wherein the elastic yarns 11 are elastic filaments. In one embodiment, the elastic yarns 11 may be spandex yarns. The first fabric 30 and the second fabric 40 are fabrics that meet physical performance requirements and safety and sanitation requirements, such as those meeting GB / T 28004.1. In one embodiment, the first fabric 30 and the second fabric 40 are air-through nonwoven fabrics.

[0058] In step S1, the elastic yarn layer 10 is laminated to the first fabric 30 via the adhesive 20. Therefore, this manufacturing method can be used as an improvement to the production process of pant-type sanitary products based on adhesive bonding. After the elastic yarn layer 10 and the first fabric 30 are laminated, the adhesive properties of the adhesive 20 secure the elastic yarn layer 10 to the first fabric 30.

[0059] During the production process, the elastic yarn layer 10 and the first fabric body 30 are unwound separately. The first fabric body 30 is in a continuous strip shape during the unwinding process, and in subsequent steps, the first fabric body 30 is cut into multiple sheet-shaped final products along the cutting position; the final product is formed after the first fabric body 30 is folded over. Figure 2 The structure shown. On the first fabric body 30, the area between adjacent cuts serves as the layout area. Furthermore, in the final product, the elastic yarn area 31, due to the layout of the elastic yarn, has good elasticity retention, so the elastic yarn area 31 can serve as the waist area of ​​a pant-type sanitary product.

[0060] For the sake of convenience, the unwinding direction of the first cloth body 30 is taken as the first direction as an example. The first direction is the length direction of the first cloth body 30. Figure 2 Correspondingly, the width direction of the first cloth body 30 is the second direction, as shown in FIG. Figure 2 The y-axis direction is shown in FIG.

[0061] In one embodiment, see Figure 2 At the position where the elastic silk layer 10 and the first cloth body 30 are compounded, the unwinding direction of the elastic silk layer 10 is the first direction, that is, at this compounding position, the unwinding direction of the elastic silk layer 10 and the first cloth body 30 is consistent with the material travel.

[0062] Specifically, in this embodiment, the interlayer area 32 may be located in the middle of the placement area along the second direction. The elastic yarn area 31 is located on both sides of the interlayer area 32 along the second direction. The outer side of the elastic yarn area 31 along the second direction is the folding area 33.

[0063] As an embodiment, the elastic silk layer 10 may be compounded with the first fabric body 30 through the glue 20 by applying glue to the glue 20 so that the surface of the elastic silk layer 10 has stickiness.

[0064] As an embodiment, the elastic yarn layer 10 may be compounded with the first fabric body 30 through the glue 20 by applying glue to the first fabric body 30 so that the surface of the first fabric body 30 is sticky.

[0065] As an embodiment, the elastic yarn layer 10 may be laminated to the first fabric body 30 via the adhesive 20 by applying adhesive to both the first fabric body 30 and the adhesive 20 so that the surfaces of the first fabric body 30 and the elastic yarn layer 10 are both sticky.

[0066] It should be noted that the method of applying glue to the elastic yarn layer 10 and / or the first fabric body 30 can be, for example, by spraying the glue 20 with a glue gun. After applying the glue, since the first fabric body 30 and the elastic yarn layer 10 are both in a stretched state during the bonding process, the bonding can be achieved without applying pressure to the elastic yarn layer 10 and / or the first fabric body 30. The stretched state refers to the elastic yarn layer 10 having a certain stretch ratio. In this embodiment, the stretch ratio of the elastic yarn layer 10 can be configured to be 2.5 to 3.2 times, preferably 2.8 to 3.0 times. When the elastic yarn layer 10 and the first fabric body 30 are to be bonded, an angle is formed between them in the vertical direction. In this embodiment, the angle can be configured to be 25° to 45°, preferably 30°. By configuring the above stretch ratio and angle, the elastic yarn layer 10 and the first fabric body 30 can be pressed together to ensure effective bonding.

[0067] During actual production, the inventors discovered that in existing production processes, adhesive adhesion between the elastic yarn and the fabric occurs after gluing. Furthermore, for strips of fabric, guide rollers are required on both sides of the fabric during transport. Consequently, there is a risk of the gluing surface of the fabric coming into contact with the guide rollers and causing adhesion. In production equipment, due to compact layout and testing requirements, the gluing surface of the fabric also carries the risk of contact with other components and causing adhesion.

[0068] To avoid the aforementioned sticking risk, a conventional solution involves covering the adhesive application surface with a layer of fabric, creating a three-layer sandwich structure with the elastic yarn on both the top and bottom surfaces. Finally, after the fabric is folded over to form a sealed edge, the elastic yarn area forms a structure of at least four layers.

[0069] In this embodiment, since the first binding member is subjected to a viscosity-reducing treatment in step S2, the viscosity of the adhesive surface of the first binding member is reduced, so that it can be directly transported without covering the second cloth body 40, so that the elastic yarn area 31 can reduce the thickness of one layer of the second cloth body 40, thereby improving the breathability and heat dissipation of the pants-type sanitary products.

[0070] In step S3, as described above, the interlayer region 32 is located in the middle of the first fabric 30 along the second direction. Therefore, the second fabric 40 is arranged in the middle of the first fabric 30 along the second direction. The interlayer region 32 serves as the bottom leakage-proof area of ​​the pant-type sanitary product, covering the entire absorbent core 60 and the bottom waistband. When laying the second fabric 40, the unwinding direction and material travel of the second fabric 40 are consistent with those of the first fabric 30.

[0071] As an implementation method, Figure 1 As shown, before laying the second fabric body 40 , glue 20 may be applied to the interlayer area 32 on the first fabric body 30 , and then the second fabric body 40 is bonded to the first fabric body 30 via the glue 20 .

[0072] As an implementation method, Figure 1 and 2 As shown, the interlayer area 32 and the elastic yarn area 31 are completely staggered, that is, in the second direction, there is no overlapping area between the interlayer area 32 and the elastic yarn area 31.

[0073] In other embodiments, for example, when the width of the elastic yarn area 31 is large or under actual process requirements, the interlayer area 32 is allowed to partially overlap with the elastic yarn area 31, such as Figure 4 shown.

[0074] Preferably, when the interlayer area 32 and the elastic thread area 31 partially overlap, the width of the overlapping area along the second direction is no more than 5 mm.

[0075] In one embodiment, see Figure 5 The method for manufacturing pants-type sanitary products further comprises, before step S3:

[0076] S21, placing the second elastic thread 50 in the interlayer area 32 through the gel 20. The second elastic thread 50 serves as a leg conforming member of the bottom layer leakage-proof area and can be arranged in an arc shape.

[0077] The second elastic thread 50 can provide elasticity to the leg area of ​​the pant-type sanitary product, preventing leakage from the bottom. In this embodiment, step S21 can be performed before step S3, so that the second elastic thread 50 is located below the second fabric 40. Correspondingly, in step S3, the second fabric 40 can be laid on the second elastic thread 50.

[0078] In other embodiments, step S21 may also be performed after step S3 , so that the second elastic thread 50 is located above the second fabric 40 .

[0079] After step S3, see Figure 5 and Figure 6 , and may also include:

[0080] S4, laying the absorbent core 60 on the second fabric 40;

[0081] The absorbent core 60 can be compounded with the second fabric 40 via the gelatin 20 .

[0082] S5. Fold the first fabric 30 upward along a preset folding line to form a folding surface, which at least covers the elastic thread area 31 and the side edge of the absorbent core 60.

[0083] In step S5, the first fabric 30 is folded inward along the folding lines on both sides along the second direction so that the first fabric 30 covers the top surface of the elastic yarn area 31. Figure 5 As shown, before being folded, both sides of the first fabric body 30 along the second direction are folded areas 33. After being folded, the folded areas 33 cover the elastic yarn area 31 to cover the elastic yarn layer 10 and the side edges of the absorbent core 60.

[0084] In step S5 , before folding the first fabric 30 , glue may be applied to the folded area 33 or the elastic yarn area 31 and the side edges of the absorbent core 60 , so that the folded first fabric 30 is bonded to the elastic yarn layer 10 via the glue 20 .

[0085] In the pant-type sanitary product manufactured by the manufacturing method provided in this embodiment, the waist region (i.e., the elastic silk region 31) can be provided with only two layers of the first fabric 30 and one layer of the elastic silk layer 10, thereby improving the air permeability and heat dissipation performance of the waist region. At the same time, the elastic silk layer 10 can maintain a good degree of elasticity.

[0086] In actual products, products made with the prior art require at least three layers of fabric in the waist area, and measured average waist air permeability is approximately 1000 mm / s. However, products made with the present method achieve an average waist air permeability of approximately 3500 mm / s, significantly improving waist air permeability. Furthermore, microclimate model testing revealed that, under test conditions of 23±1°C and 50±2% humidity, a 5% saline solution containing simulated urine at 36.5°C was injected into the waist area. The time it took for the solution to cool to room temperature was 10.3 inches. In the prior art, using three layers of fabric in the waist area, all other conditions remaining the same, the time it took was 17.7 inches. This demonstrates that the heat dissipation performance of the pant-type sanitary product of this embodiment is significantly improved.

[0087] In addition to the above effects, the manufacturing method provided by this embodiment can also reduce the material cost of the second cloth body 40. Figure 1Along the second direction, the dimensions of the first fabric body 30 are A cm, the dimensions of the second fabric body 40 are B cm, and the dimensions of the elastic region 31 are C cm. Assuming the folded dimension of the first fabric body 30 is D cm, then in this embodiment, the dimension B of the second fabric body 40 is A - 2C - 2D. In a pant-type sanitary product manufactured using existing manufacturing methods, while retaining the dimensions of the first fabric body 30, elastic region 31, and folded dimensions, the folded dimension B' of the second fabric body is B' = A - 2D. In other words, the manufacturing method provided in this embodiment can save 2 C mm in the size of the second fabric body 40 compared to the existing technology. Substituting the dimensions of the actual product, the reduction ratio of the second fabric body 40 reaches 35-40%. In other words, the material saving rate of the second fabric body 40 reaches 37.03%.

[0088] In one embodiment, before step S5, see Figure 7 , and may also include:

[0089] S41. Arrange the third elastic thread 34 on the folded area 33. The third elastic thread 34 can be arranged parallel to the elastic thread 11. After being folded at the folded area 33, the third elastic thread 34 forms a threshold-shaped elastic pocket between the first fabric 30 and the absorbent core 60, thereby enhancing the product's ability to prevent front and rear leakage.

[0090] As an implementation, step S41 may be performed after step S41. In other implementations, step S41 may also be performed before step S4, for example, simultaneously with step S1.

[0091] As an embodiment, the third elastic thread 34 may be disposed at the outer end of the folding region 33 along the second direction.

[0092] Specifically, the area where the third elastic threads 34 are arranged is designated as the outer elastic zone. The distance between the outer elastic zone and the side edge of the first fabric body 30 along the second direction can be 6-10 mm, for example, 8 mm. The distance between the outer elastic zone and the elastic thread area 31 can be 45-70 mm, for example, 55 mm.

[0093] As an embodiment, the third elastic thread 34 can be an elastic thread with a denier of 70D.

[0094] In one embodiment, taking the adhesive 20 as a water-emulsion adhesive, the viscosity reduction treatment may be to spray dry hot air on the adhesive 20 to dry and solidify the adhesive 20 to reduce or remove the viscosity.

[0095] In another embodiment, the adhesive is a hot melt adhesive; and the viscosity reduction treatment includes: spraying a low-temperature medium onto the elastic yarn area.

[0096] The glue gun is equipped with a heating element, allowing it to effectively melt and spray the glue 20, ensuring a stable glue application process. Furthermore, the hot melt adhesive rapidly cools and solidifies upon contact with the substrate, quickly securing the elastic yarn layer 10. In actual production, the glue gun can be configured to face the composite area between the elastic yarn layer 10 and the first fabric 30. Specifically, when the elastic yarn layer 10 is drawn into contact with the first fabric 30, or is about to contact the first fabric 30, the glue gun sprays the glue 20 onto the elastic yarn area 31.

[0097] In one embodiment, the low-temperature medium includes: a low-temperature airflow and a viscosity reducer.

[0098] As an embodiment, the viscosity reducing agent is a polyamide derivative viscosity reducing agent or a release agent, such as LOCTITE FREKOTE R110, supplied by Henkel Adhesive Technologies (Shanghai) Co., Ltd.

[0099] In this embodiment, the low-temperature airflow can quickly reduce the temperature of the glue 20 to below the ambient temperature, so that the hot melt adhesive quickly solidifies and loses its viscosity; at the same time, after the viscosity reducer is sprayed onto the surface of the glue 20, it can quickly spread due to its low surface energy characteristics to form a molecular-level isolation film, thereby reducing the surface viscosity of the glue 20 and preventing the first bonding member from adhering to other components during subsequent transportation.

[0100] In one embodiment, the elastic yarn 11 has a denier of 70-240D.

[0101] Specifically, the inventors have discovered that existing pants-type sanitary products for infants and young children often use coarse elastic yarn with a denier of 470-800D. The number of elastic yarns in the products produced is small and sparsely distributed. When infants and young children wear them, the elastic yarns may press on the local skin or even embed into the skin, causing skin marks and redness. In severe cases, it can cause the skin's stratum corneum to wear and damage the dermis, causing skin infection.

[0102] In this embodiment, the use of elastic yarn 11 with a denier of 70-240D can avoid the problem of excessive elasticity of a single elastic yarn 11, thereby reducing the situation where the elastic yarn 11 is under high pressure and compresses the skin, making the waist area fit the wearer better and improving the wrapping force.

[0103] In one embodiment, see Figure 7 The elastic yarn area 31 includes several sub-elastic yarn areas 311; in the step of compounding the elastic yarn layer 10 to the elastic yarn area 31 of the first cloth body 30 through the glue 20, multiple elastic yarns 11 are arranged in each sub-elastic yarn area at a preset interval; the preset interval is 1-2 mm.

[0104] As an embodiment, the elastic yarn region 31 includes a sub-elastic yarn region.

[0105] As another embodiment, there are multiple sub-elastic yarn areas 311 ; and the interval between adjacent sub-elastic yarn areas is 8-15 mm.

[0106] In this embodiment, the plurality of elastic threads 11 are arranged in parallel and spaced apart. Based on the use of the elastic threads with a denier of 70-240D, the plurality of elastic threads 11 are arranged at the above-mentioned preset spacing to effectively disperse the pressure and avoid excessive local pressure.

[0107] As one embodiment, in the elastic yarn region 31, the elastic yarn 11 located near the outer side along the second direction can be a lower denier elastic yarn, such as 70D. The elastic yarn 11 located near the center of the first fabric body 30 along the second direction can be a higher denier elastic yarn, such as 105D. For example, along the elastic yarn region 31 toward the interlayer region 32, the upper portion of the pant-type sanitary product can be provided with four sub-elastic yarn regions 311. The elastic yarn 11 in the outermost sub-elastic yarn region 311 has a denier of 70D, while the elastic yarn 11 in the remaining sub-elastic yarn regions 311 has a denier of 105D.

[0108] In practice, the elastic threads 11 located toward the outside along the second direction generally correspond to the wearer's waist and abdomen. The waist and abdomen experience significant fluctuations with the wearer's breathing, so using elastic threads with a lower denier can improve wearing comfort and reduce pressure and constriction. The elastic threads 11 located toward the center of the first fabric 30 along the second direction serve as the primary securing area for the product. Using elastic threads with a slightly higher denier allows for a snug fit around the wearer's waist, preventing the risk of the product slipping or leaking due to a loose waistline. This ensures that the pant-type sanitary product is both comfortable and secure to wear.

[0109] In one embodiment, the stretching ratio of the elastic thread 11 is 2.5-3.2 times. Under this stretching ratio, the elastic thread 11 can maintain good initial tension and good elastic recovery force, and will not break due to excessive stretching.

[0110] In one embodiment, the first fabric 30 is provided with two elastic regions 31. In the final product, the two elastic regions 31 correspond to the front and back waist regions of the pant-type sanitary product, respectively. When worn, the front waist region fits snugly against the wearer's front waist and abdomen, while the back waist region fits snugly against the wearer's back waist and hips.

[0111] In this embodiment, the number of elastic threads 11 in the elastic thread zone 31 corresponding to the front waist region is configured to be 80-140, while the number of elastic threads 11 in the elastic thread zone 31 corresponding to the back waist region is configured to be 80-150. Generally, for infants and young children, the deformation of the back waist region after wearing pant-type sanitary products is greater than that of the front waist region. Therefore, in this embodiment, the elastic thread zone 31 corresponding to the back waist region can be arranged with more elastic threads 11 than the elastic thread zone 31 corresponding to the front waist region, thereby achieving a better fit in the back waist region.

[0112] The second aspect of the present application provides a method for manufacturing a trouser-type sanitary product, see Figure 8 and Figure 9 , which includes:

[0113] S01. Compounding the elastic silk layer 10 with the first cloth body 30 via the glue 20 to form a first bonding member; wherein the elastic silk layer 10 includes a plurality of elastic silks 11 arranged in parallel and at intervals.

[0114] S02, performing viscosity reduction treatment on the first combined component to form a second combined component;

[0115] S03, laying the second binding member on the elastic yarn area on the third fabric body 70;

[0116] S04, laying the second fabric 40 on the interlayer area of ​​the third fabric 70, with the interlayer area and the elastic yarn area being staggered or partially overlapping;

[0117] S05, laying the absorbent core 60 on the second fabric 40;

[0118] S06 , folding the third fabric 70 upward along a preset folding line to form a folding surface, wherein the folding surface at least covers the elastic thread area and the side edge of the absorbent core 60 .

[0119] As an embodiment, the top view of the first coupling member can be referred to Figure 9 .

[0120] After step S01 and before step S02, the following steps may also be included:

[0121] S011. Cut the first connecting member along a cutting line into two parts corresponding to the front waist region and the back waist region respectively.

[0122] Specifically, the pant-type sanitary product has two elastic zones, corresponding to the front and back waist regions of the elastic waistband. Therefore, in step S01, the area of ​​the first binding member can be twice that of the elastic zone. After the first binding member is produced, it is cut. The cutting line can be parallel to the elastic thread 11.

[0123] In step S01, the elastic threads 11 on the first binding member, located near the outer side along the second direction, can be made of a lower denier, such as 70D. The elastic threads 11 located near the center of the first fabric 30 along the second direction can be made of a higher denier, such as 105D. After the first binding member is cut along the cutting line, its two sides along the second direction correspond to the wearer's waist and abdomen. Therefore, using a lower denier elastic thread improves wearing comfort and reduces pressure on the wearer's abdomen, while using a higher denier elastic thread near the inner area ensures a secure fit and prevents leakage.

[0124] In the existing process, there are different production processes. For example, in the embodiment provided in the first aspect, the manufacturing process adopts the first cloth body 30 as the base layer, and after the elastic silk layer 10 is laid, the second cloth body 40 is laid. This belongs to the manufacturing process of compounding the elastic silk layer 10 on the outer layer.

[0125] In this embodiment, the elastic yarn layer 10 and the first fabric body 30 are first formed into a first combined component, and the third fabric body 70 is used as the base layer, which is a manufacturing process in which the elastic yarn layer 10 is built in. In this way, the first combined component can be transported and delivered independently.

[0126] In this embodiment, the dimensions of the first fabric 30 are comparable to those of the elastic yarn layer 10. In existing processes employing this embodiment, the first binding member requires a layer of fabric covering the elastic yarn layer to prevent it from adhering to other components during transport. This means that the first binding member in existing processes has a three-layer structure: fabric - elastic layer - fabric. However, in this embodiment, the viscosity reduction treatment in step 02 removes the stickiness of the first binding member, enabling independent transport and transportation of the first binding member. Furthermore, the resulting pant-type sanitary product has one less fabric layer in the waist area than products manufactured using the same process.

[0127] It should be noted that, in this embodiment, the viscosity reduction treatment method can adopt the viscosity reduction treatment method in the above other embodiments, and therefore it will not be described in detail.

[0128] A third aspect of the present application provides a pant-type sanitary product manufactured by the manufacturing method of the pant-type sanitary product in any of the above embodiments.

[0129] The pant-type sanitary products may be diapers or pull-up pants, etc. The pant-type sanitary products manufactured by the above-mentioned manufacturing method can have fewer layers of fabric in the waist area, thereby making the waist area more breathable and heat-dissipating, thereby improving the comfort of the wearer.

[0130] The above are only preferred embodiments of the present application and are not intended to limit the present invention. Although the present application has been described in detail with reference to examples, those skilled in the art can still modify the technical solutions described in the aforementioned examples or make equivalent replacements for some of the technical features therein. However, any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A method for manufacturing a trouser-type sanitary product, characterized in that: include: Compounding the elastic yarn layer with the elastic yarn region of the first fabric body via a colloid to form a first bonding member; performing a viscosity reduction treatment on the first bonding member to form a second bonding member; The second cloth body is laid on the interlayer area of ​​the second connecting member, and the interlayer area is staggered or partially overlapped with the elastic yarn area.

2. The method for manufacturing pants-type sanitary products according to claim 1, characterized in that: After laying the second fabric on the interlayer area of ​​the second combining member, the method further includes: Laying the absorbent core on the second fabric; The first cloth body is folded upward along a preset folding line to form a folding surface, and the folding surface at least covers the elastic thread area and the side edge of the absorbent core.

3. The method for manufacturing pants-type sanitary products according to claim 1, characterized in that: The glue is hot melt adhesive; The viscosity reduction treatment includes: spraying a low-temperature medium onto the elastic yarn area.

4. The method for manufacturing pants-type sanitary products according to claim 3, characterized in that: The low-temperature medium includes: low-temperature airflow and viscosity reducer.

5. The method for manufacturing pants-type sanitary products according to claim 1, characterized in that: The elastic thread layer includes a plurality of elastic threads; The denier of the elastic yarn is 70-240D.

6. The method for manufacturing pants-type sanitary products according to claim 5, characterized in that: The elastic yarn area includes a plurality of sub-elastic yarn areas; In the step of compounding the elastic yarn layer with the elastic yarn area of ​​the first cloth body through the glue, a plurality of elastic yarns are arranged in each of the elastic yarn sub-areas at predetermined intervals; The preset spacing is 1-2 mm.

7. The method for manufacturing pants-type sanitary products according to claim 6, characterized in that: The number of the sub-elastic yarn areas is multiple; The interval between adjacent sub-elastic yarn areas is 8-15 mm.

8. The method for manufacturing a trouser-type sanitary product according to any one of claims 5 to 7, characterized in that: The stretching ratio of the elastic thread is 2.5-3.2 times.

9. A method for manufacturing a trouser-type sanitary product, characterized in that: include: Compounding the elastic silk layer with the first cloth body via glue to form a first bonding member; performing a viscosity reduction treatment on the first bonding member to form a second bonding member; Laying the second connecting member on the elastic yarn area on the third fabric body; Laying the second fabric body on the interlayer area of ​​the third fabric body, wherein the interlayer area and the elastic yarn area are staggered or partially overlapped; Laying the absorbent core on the second fabric; The third fabric body is folded upward along a preset folding line to form a folding surface, and the folding surface at least covers the elastic thread area and the side edge of the absorbent core.

10. A trouser-type sanitary product, characterized in that: The trouser-type sanitary product is made by the manufacturing method of any one of claims 1 to 9.

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