Layered fluffy bubble waistline structure
By placing elastic threads in different interlayered spaces within the bubble waistband structure to form a bubble-like structure, the problems of high production costs and user discomfort in existing technologies are solved, achieving a simple, comfortable, and breathable waistband effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-13
- Publication Date
- 2026-03-27
AI Technical Summary
The existing bubble waistband structure increases production costs during the manufacturing process, and the elastic yarn exerts a strong pressure on the user's skin, affecting user comfort.
The waistband adopts a layered, fluffy bubble structure. By placing elastic threads in different interlayered spaces, the non-woven fabric is folded to form multiple cavities, creating a bubble-like structure. This avoids the elastic threads from directly contacting the skin. Intermittent composite points are formed through ultrasonic dot matrix welding or hot melt adhesive dispensing technology.
It achieves simplicity and softness in the waistband structure, reduces production costs, and improves user comfort and breathability, avoiding the pressure on the skin caused by elastic silk.
Smart Images
Figure CN224039469U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the support or fixing device technical field of absorbent article, specifically discloses a layered fluffy bubble waistline structure. BACKGROUND
[0002] The bubble waistline structure adopts intermittent composite technology, and at least contains two layers of non-woven fabrics, a plurality of elastic filaments are fixed between the discontinuous composite points and the non-woven fabric materials. Through the combination of the natural shrinkage of the elastic filaments and the inherent elasticity of the non-woven fabric materials, a plurality of cavities with elasticity and fluffiness are formed on the surface of the non-woven fabric, thereby constituting a belt-shaped structure. When this structure is applied to the waistline part of the absorbent article, the pressure applied by the elastic filaments directly through the outer non-woven fabric can be reduced, the comfort of the user's waist can be optimized, and the tightness can be reduced.
[0003] In the current technical field, a traceless partition type organ waistline structure is disclosed. The structure is constructed by combining a plurality of non-woven fabrics and adopting an inner-outer layered manner, and at least contains 2 layers and 3 groups of waistline elastic filament layout. By adjusting the spacing between the elastic filaments and the position of the intermittent composite points, a new type of bubble waistline structure with better covering level and constraint level is formed compared with the traditional elastic bubble waistline structure.
[0004] From the perspective of level, the above structure shows a style composed of a plurality of non-woven fabrics connected end to end, aiming to simplify the local processing process. However, this actually increases the steps of producing the bubble waistline product with level, resulting in inevitable rise of production cost. Therefore, based on the existing layered partition design concept, developing a fluffy bubble waistline product with relatively simple structure but still maintaining the layered partition characteristics has important practical significance for reducing production cost and improving production capacity. At the same time, this also helps to improve the wearing performance of ordinary products relative to high-end products. SUMMARY
[0005] In view of the technical defects in the background art, the utility model provides a layered fluffy bubble waistline structure, which solves the above technical problems and meets the actual needs, and the specific technical scheme is as follows:
[0006] A layered fluffy bubble waistline structure, comprising an absorption main body composed of a bottom layer, an absorption body and a surface layer which are sequentially and inwardly compounded, the bottom layer is composed of an integral 1 piece of outer water-repellent layer and an integral 1 piece of inner water-repellent layer, and a plurality of parallel elastic filaments are clamped in the bending part of the inner water-repellent layer and the interlayer of the outer water-repellent layer and the inner water-repellent layer after the two ends of the bottom layer are inwardly folded along the length direction of the absorption main body;
[0007] The edge of the bottom layer is folded inward, and the inner water-repellent layer and the outer water-repellent layer are connected by a plurality of intermittent composite points with a longitudinal interval < a transverse interval in the range from the bending part of the inner water-repellent layer to the limit, and a plurality of elastic cavities are formed between the inner water-repellent layer and the outer water-repellent layer by the elastic contraction of the elastic wire.
[0008] The number of the elastic wires compounded in the elastic cavities is not more than 8, and at least 2 are respectively compounded at the two end bending parts of the sandwiched layer of the inner water-repellent layer and the outer water-repellent layer, and at least 2 are respectively compounded at the two end bending parts adjacent to the sandwiched layer of the inner water-repellent layer and the outer water-repellent layer in the direction of the surface layer.
[0009] As a further technical scheme of the utility model, in the area where the elastic cavities exist, at least 4 elastic wires are compounded in the sandwiched layer of the bending part of the inner water-repellent layer.
[0010] As a further technical scheme of the utility model, the inner water-repellent layer is additionally folded once towards the two ends of the length direction of the absorbing body and is compounded with the outer water-repellent layer or the inner water-repellent layer itself.
[0011] As a further technical scheme of the utility model, it further comprises one or n dense transverse composite positions, which divide the elastic cavities into n+1 smaller elastic cavities.
[0012] As a further technical scheme of the utility model, the intermittent composite points are formed by ultrasonic dot array welding or hot melt glue point bonding.
[0013] As a further technical scheme of the utility model, the shape of the intermittent composite points is any one or several of a circle, a polygon, a broken line, a curve and a star.
[0014] As a further technical scheme of the utility model, the interval L1 between the elastic wires in the area of the bottom layer where the elastic cavities exist is not equal to the interval L2 between the elastic wires outside the area of the bottom layer where the elastic cavities exist, and the interval L2 is greater than the interval L1.
[0015] As a further technical scheme of the utility model, the interval between the elastic wires is greater than 4 mm.
[0016] As a further technical scheme of the utility model, the number of the elastic wires compounded in the bottom layer is 8-48.
[0017] As a further technical scheme of the utility model, the remaining elastic wires and the absorbing body are connected by a plurality of intermittent composite points with a transverse equal interval outside the range from the bending part of the inner water-repellent layer to the limit.
[0018] The waist structure of the absorption product has the advantages that: the waist structure of the absorption product disclosed by the technical scheme is formed by only using two complete water-repellent cloth pieces to be inwardly folded, using the multi-layer space formed by the folding, and separating the elastic wire from the bubble elastic cavity, so that the elastic wire is arranged in different interlayer spaces, the layered waist elastic structure is realized, the structure of the utility model is more simple compared with the prior art, and direct compression of the elastic wire to the skin of a user is avoided. The bubble-shaped structure formed by the elastic cavity of the inner and outer layers balances the production cost and the product performance. BRIEF DESCRIPTION OF DRAWINGS
[0019] Figure 1 is a sectional structure schematic diagram of the utility model Figure 1 .
[0020] Figure 2 is a whole expansion structure schematic diagram of the utility model Figure 1 .
[0021] Figure 3 is a partial enlarged schematic diagram of Figure 2 .
[0022] Figure 4 is a whole expansion structure schematic diagram of the utility model Figure 2 .
[0023] Figure 5 is a partial enlarged schematic diagram of Figure 4 .
[0024] Figure 6 is a sectional structure schematic diagram of the utility model Figure 2 .
[0025] Figure 7 is a sectional structure schematic diagram of the utility model Figure 3 .
[0026] Figure 8 is a forming effect schematic diagram of one kind of elastic cavity of the utility model.
[0027] Figure 9 is another embodiment effect schematic diagram of the intermittent composite point of the utility model.
[0028] Wherein: 1-bottom layer; 10-external water-repellent layer; 11-internal water-repellent layer; 2-absorption body; 3-surface layer; 4-elastic wire 4; 5-intermittent composite point; 6-elastic cavity; 7-transverse composite position; A-absorption main body; B-folded edge; C-two end bending portions; D-elastic wire setting position; LD-length direction; Inside-inside of the absorption main body; Outside-outside of the absorption main body. DETAILED DESCRIPTION
[0029] The embodiments of the present application are described below in conjunction with the accompanying drawings and related embodiments, and the embodiments of the present application are not limited to the following examples, and the present application relates to related necessary components in the technical field, which should be regarded as known technology in the technical field and can be known and mastered by the skilled in the technical field.
[0030] In combination Figures 1 to 8 As shown in FIG. 1, a layered and fluffy bubble waist structure includes an absorption main body A composed of a bottom layer 1, an absorption body 2 and a surface layer 3 in sequence from outside to inside, wherein the outside of the absorption main body A refers to the side close to the user's clothes, and the inside of the absorption main body A refers to the side close to the user's skin, and the subsequent "inside and outside" directions are taken as the reference, the bottom layer 1 is composed of one complete external water-repellent layer 10 and one complete internal water-repellent layer 11, and a plurality of elastic filaments 3 are arranged in parallel in the folding part of the internal water-repellent layer 11 and the interlayer of the external water-repellent layer 10 and the internal water-repellent layer 11 after the two ends of the bottom layer 1 along the length direction LD of the absorption main body A are folded inward.
[0031] Referring to Figure 1 As shown in FIG. 2, the internal water-repellent layer 11 and the external water-repellent layer 10 are connected by a plurality of discontinuous composite points 5 with longitudinal spacing < transverse spacing in the range from the folding part of the internal water-repellent layer 11 to the edge B, and a plurality of elastic cavities 6 are formed between the internal water-repellent layer 11 and the external water-repellent layer 10 by the elastic contraction of the elastic filaments 4, specifically a plurality of parallel long strip-shaped elastic cavities 6.
[0032] In the present application, the absorption main body A is a general product concept derived from the basic structure of the absorption product. In other words, any wearable product with a bottom layer 1, an absorption body 2 and a surface layer 3 in sequence can adopt the layered and fluffy bubble waist structure disclosed in the present application. The bottom layer 1 is composed of at least two complete external water-repellent layers 10 and internal water-repellent layers 11, and the elastic filaments 4, usually spandex filaments, are arranged in the folding part of the internal water-repellent layer 11 and the interlayer of the external water-repellent layer 10 and the internal water-repellent layer 11 after the two ends of the bottom layer 1 along the length direction LD of the absorption main body A are folded inward, to form a waist base. Since the elastic filaments 4 are embedded in the bottom layer 1 composed of two layers of water-repellent cloth, when the elastic filaments 4 contract, the elastic force directly acts on the inner and outer layers of water-repellent cloth, causing the bottom layer 1 to shrink and wrinkle.
[0033] Specifically refer to Figure 1As shown, the main difference between the utility model and the prior art is that the elastic filament 4 is not simply and uniformly compounded in the interlayer between the outer water-repellent layer 10 and the inner water-repellent layer 11, but is a layered elastic filament 4 layout that is continuous from the outside to the inside and discontinuous in the inner and outer water-repellent layer interlayer when viewed separately, and the position of the elastic cavity 6 is formed between the interlayer of the inner and outer water-repellent layers, where there is no or a small amount of elastic filament 4, the position covered by the fluffy bubble cavity formed by the elastic cavity 6 is the area where the elastic filament 4 is sandwiched by the inner water-repellent layer 11 after being folded, and the range of this area is from the two end bending parts C of the bottom layer 1 to the edge B of the absorbent article structure. The elastic filament 4 at this position mainly provides sufficient size of the convergence force for the wearable absorbent article, ensuring that the waist opening of the absorbent article can be tightly attached to the user's waist area, so the pressure of the elastic filament 4 at this position is usually higher than that of the elastic filament 4 near the absorbent body 2.
[0034] The above-mentioned elastic cavity 6 is formed on the inner and outer sides of the absorbent article, which perfectly covers the fastening elastic filament 4 sandwiched by the inner water-repellent layer 11, not only effectively relieves the pressure of the elastic filament 4 applied to the user's waist skin, making the user feel softer and more comfortable, and improving the air permeability of the position, but also does not rely on other additional non-woven fabric structures, and only uses the multi-layer interlayer space formed by the folding of the two layers of water-repellent cloth to form a multi-layer waist circumference elastic area with inner and outer and length direction LD up and down, which is simple and ingenious in structure, and the requirements for enterprise production and processing are obviously reduced compared with the existing scheme; the elastic filament 4 at the lower abdominal position where the elastic cavity 6 does not exist, specifically refers to the elastic filament existing in the interlayer of the outer water-repellent layer 10 and the inner water-repellent layer 11, which can be set more relaxed and soft, and focuses on improving the fit of the absorbent article, and the elastic filament 4 at this position can be normally compounded in the interlayer of the inner and outer water-repellent layers.
[0035] As shown in Figures 2 to 5 , and Figure 8 , the longitudinal interval of the intermittent compounding point 5 is less than the transverse interval, which helps to form an organ-like strip-shaped elastic cavity 6, and the larger elastic cavity 6 can significantly improve the air permeability and softness of the waist circumference structure.
[0036] As shown in Figure 6 or Figure 7 , as one of the preferred embodiments of the utility model, as a further technical solution of the utility model, the inner water-repellent layer 11 is additionally folded once towards the two ends of the length direction of the absorbent body A and compounded with the outer water-repellent layer 10 or the inner water-repellent layer 11 itself, wherein, Figure 6 tends to be compounded with the outer water-repellent layer 10 outwardly, and Figure 7For the inward, tend to be with the internal water repellent layer 11 itself complex form, the scheme formed waist structure, in addition to being able to have the original scheme technical effect, because the thickness of the waist structure area is thickened, thus the stiffness of the waist structure in the area where the elastic cavity 6 is located is obviously improved, and the elastic cavity 6 can be better supported to prevent compression deformation.
[0037] As shown in Figure 8 As one of the preferred embodiments of the present application, as a further technical solution of the present application, it further comprises one or n dense transverse composite sites 7, which divide the elastic cavity 6 into n+1 smaller elastic cavities 6. In this scheme, the transverse composite site 7 and the intermittent composite point 6 are arranged in the same interlayer space, which divides the elastic cavity 6. After the elastic cavity 6 is divided by the transverse composite site 7, the shape of the smaller elastic cavity 6 is more stable than that of a complete strip-shaped elastic cavity 6. In combination with the previous embodiment, a more stable and elastic elastic cavity 6 can be formed, providing users with a softer and more comfortable touch.
[0038] As one of the preferred embodiments of the present application, the number of elastic filaments 4 compounded in the elastic cavity 6 is not more than 8, and at least 2 are compounded at the two end bending portions C of the interlayer of the internal water repellent layer 11 and the external water repellent layer 10, and at least 2 are compounded at the side of the facing layer direction adjacent to the two end bending portions of the interlayer of the internal water repellent layer 11 and the external water repellent layer 10, that is, the part indicated by position D in the drawing. In combination with the drawing, the elastic cavity 6 is actually formed at the position close to the inside of the waist opening of the absorbent article, but since this position is not necessarily connected by the intermittent composite point 5, the stability of the elastic cavity 6 will be relatively weak. However, since the bulging caused by the elastic force is still present, it can also play a good buffering and pressure reducing effect on the waist area of the user.
[0039] Specifically refer to Figure 1 As one of the preferred embodiments of the present application, at least 4 elastic filaments 4 are compounded in the interlayer of the bending portion of the internal water repellent layer 11 in the area where the elastic cavity 6 exists. From the requirement of ensuring that the absorbent article is stably worn on the crotch of the user, it is necessary to make full use of the fluffy feeling and softness of the dense bubble-shaped elastic cavity 6 to eliminate the pressure of the elastic filament 4. Therefore, at least 4 elastic filaments 4 are arranged in the area where the elastic cavity 6 exists, which can meet the application of the technical solution of the present application in more specifications, more sizes and more types of wearable absorbent articles.
[0040] In combination with Figures 2 to 4As shown in the preferred embodiment of the present application, the intermittent composite point 5 is formed by ultrasonic dot array welding or hot melt glue point bonding, in actual application, ultrasonic dot array composite technology can provide uniform and firm connection, while maintaining the softness and elasticity of the material. The hot melt glue point bonding technology has the advantages of rapid curing and good bonding strength, which ensures the stability of the waist structure of the absorbent product, and is helpful for the simple structure composition of the present scheme. The selection of the two technologies depends on the production cost, efficiency and performance requirements of the final product.
[0041] In addition, the thickness and density of the non-woven fabric used in the inner and outer water-repellent layers of the bottom layer 1 can also be adjusted according to different use requirements to control the loft and elasticity of the elastic cavity 6 to achieve the best comfort and support effect. In the manufacturing process, the elasticity and support force of the waist of the absorbent product can also be optimized by adjusting the distribution density and position of the intermittent composite point 5, especially the wrapping degree of the elastic cavity 6 to the human skin, thereby meeting the wearing needs of users of different body types.
[0042] As one of the preferred embodiments of the present application, the shape of the intermittent composite point 5 is any one or several of a circle, a polygon, a polyline, a curve, and a star, in actual application, the shape of the intermittent composite point 5 is selected according to the required distribution density of the elastic cavity 6 and the fixing effect of the elastic wire 4. For example, as shown in Figure 2 and Figure 3 A circle can provide uniform fixing force and is suitable for occasions requiring uniform elastic force distribution; a polygon can provide more fixing points in a limited space and is suitable for areas requiring high fixing strength. As shown in the embodiments of Figure 4 and Figure 5 The intermittent composite point 5 has more than one shape, a polyline and a curve can increase the shape diversity of the elastic cavity 6, making the product have better adaptability and comfort during use. A star can provide strong fixing force at the center point and a certain elasticity at the edge, and is suitable for occasions requiring elastic force in a specific direction. By reasonably selecting the shape of the intermittent composite point 5, the overall performance of the product can be optimized to meet different use requirements.
[0043] As one of the preferred embodiments of the utility model, the interval L1 between the elastic filaments 4 in the area of the bottom layer 1 with the elastic cavity 6 is not equal to the interval L2 between the elastic filaments 4 outside the area of the bottom layer 1 with the elastic cavity 6, and the interval L2 is greater than the interval L1. In combination with the above design, the elastic filaments 4 can provide more compact support inside the area of the elastic cavity 6, so that the pressure can be better dispersed when stressed, and the comfort and durability of the product are increased. Outside the area of the elastic cavity 6, the larger interval L2 allows the material to have more expansion space when not stressed, so that better freedom of movement is provided without affecting the overall elastic force distribution. Through this design of different elastic filament intervals inside and outside, the product can meet the needs of support and flexibility at the same time, and is suitable for various wearing scenarios.
[0044] As one of the preferred embodiments of the utility model, the interval between the elastic filaments 4 is greater than 4 mm. An interval of 4 mm or more can facilitate the determination of the elastic force size that is comfortable for the human body, and can also ensure the waist circumference elastic force size that is necessary for wearing stability under the condition that L1 < L2, thereby avoiding the occurrence of early loosening accidents and leakage when the user wears the absorbent article.
[0045] As one of the preferred embodiments of the utility model, the number of elastic filaments 4 compounded in the bottom layer 1 is 8-48. As a preferred option, the number of elastic filaments 4 is adaptively adjusted according to the type and size of the absorbent article. For example, the requirement for elastic force of menstrual pants is lower than that of pull-ups, and the number of elastic filaments 4 required is naturally 8-12. When pull-ups are used by adult users, the number increases with the size, and is not more than 48, and is usually adjusted in the range of 24-40.
[0046] As shown in Figure 9 As one of the preferred embodiments of the utility model, the remaining elastic filaments 4 and the absorbent body are connected through a plurality of horizontally spaced intermittent composite points 5 outside the range from the bending part of the inner water-repellent layer 11 to the boundary of the inner water-repellent layer 11. Specifically, if the remaining elastic filaments 4 are compounded with the remaining structure of the absorbent body in a conventional compact composite manner, although the stability of the absorbent article can be ensured to prevent delamination, if the remaining part is compounded by the intermittent composite points 5 as shown in the figure, and the horizontal interval between the intermittent composite points 5 is D2, while the traditional way is D1, and D1 is greater than D2, the intermittent composite points are more dense than the traditional way, which can not only improve the loft and breathability of the waist structure of the absorbent body, but also ensure the stability of the waist structure of the absorbent body without delamination.
[0047] In practical applications, the intermittent composite point 5 distribution mode effectively improves the loft and air permeability of the waist structure, and moderately enhances the overall comfort of the absorbent article. If necessary, by further accurately regulating the distance between the intermittent composite points 5, ensuring a reasonable balance between structure stability and air permeability, the basic requirements of comfort and durability of different users can be met. In addition, this design optimizes the production process, reduces production costs by reducing the amount of glue applied, and thus improves the market competitiveness of the product. After multiple experimental verifications, the absorbent article using this distribution strategy has shown good performance stability in long-term use and has been generally recognized by users.
[0048] Overall, the waist structure of the absorbent article disclosed in the technical solution uses only two complete water-repellent cloth pieces to fold inward, uses the multi-layer space formed by the folded part to separate the elastic wire 4 from the bubble-shaped elastic cavity 6, and forms a bubble waist structure. The elastic wire 4 is arranged in different interlayer spaces, achieving the layering of the waist elastic structure.
[0049] Compared with the prior art, the structure of the present application is more simple, which helps to reduce the processing requirements, improve the process yield, and avoid the direct pressure of the elastic wire on the user's skin. The advantages of the layered bubble waist are also well reflected. The bubble-shaped structure composed of the inner and outer layer lofts elastic cavity 6 makes the present technical solution achieve a good balance between production cost and product performance, which helps the technical solution of the present application to be widely applied in more production enterprises and benefit more different user groups.
[0050] The above is only the preferred embodiment of the present application. It should be noted that for ordinary skilled persons in the art, without departing from the principles of the present application, several improvements and refinements can be made, which should also be considered within the scope of protection of the present application.
Claims
1. A layered and fluffy bubble waist structure, comprising an absorbent body composed of a bottom layer, an absorbent body and a surface layer from outside to inside, the bottom layer is composed of a complete 1 piece of external water repellent layer and a complete 1 piece of internal water repellent layer, the bottom layer is folded inward along the length direction of the absorbent body, and a plurality of elastic filaments are arranged in parallel in the folding part of the internal water repellent layer and the interlayer of the external water repellent layer and the internal water repellent layer, characterized in that: the internal water repellent layer and the external water repellent layer are connected by a plurality of intermittent composite points with longitudinal spacing < transverse spacing in the range from the folding part of the internal water repellent layer to the limit, and a plurality of elastic cavities are formed between the internal water repellent layer and the external water repellent layer by the elastic contraction of the elastic filaments. The number of elastic filaments compounded in the elastic cavity is not more than 8, and at least 2 are compounded in the folding part of the interlayer of the internal water repellent layer and the external water repellent layer at both ends, and at least 2 are compounded in the folding part of the interlayer of the internal water repellent layer and the external water repellent layer at both ends adjacent to the surface layer. In the area where the elastic cavity exists, at least 4 elastic filaments are compounded in the folding part of the interlayer of the internal water repellent layer.
2. The layered puffy bubble waistline structure according to claim 1, wherein, The internal water repellent layer is additionally folded once towards both ends of the length direction of the absorbent body and compounded with the external water repellent layer or the internal water repellent layer itself.
3. The layered puffy bubble waistline structure of claim 1, wherein, It also includes one or n dense transverse composite positions, which divide the elastic cavity into n+1 smaller elastic cavities.
4. The layered puffy bubble waistline structure of claim 1, wherein, The intermittent composite points are formed by ultrasonic dot welding or hot melt glue point bonding.
5. The layered puffy bubble waistline structure of claim 1, wherein: The shape of the intermittent composite points is any one or several of circular, polygonal, broken line, curved, star.
6. The layered puffy bubble waistline structure of claim 1, wherein: The spacing L1 between the elastic filaments in the area of the bottom layer where the elastic cavity exists is not equal to the spacing L2 between the elastic filaments outside the area of the bottom layer where the elastic cavity exists, and the spacing L2 is greater than the spacing L1.
7. The layered puffy bubble waistline structure of claim 1, wherein: The spacing between the elastic filaments is >4mm.
8. The layered puffy bubble waistline structure of claim 1, wherein: The number of elastic filaments compounded in the bottom layer is 8-48.
9. The layered puffy bubble waistline structure of claim 1, wherein: The remaining elastic filaments outside the range from the folding part of the internal water repellent layer to the limit of the internal water repellent layer and the external water repellent layer are connected to the absorbent body by a plurality of intermittent composite points with transverse equal spacing.
10. The layered, puffy bubble waistline structure according to any of claims 1-9, characterized in that: