Elastic waistline structure easy to thermally weld and pants-type paper diaper comprising elastic waistline structure

Abstract

The utility model relates to an elastic waistline structure easy to thermally weld and a pants type paper diaper comprising the elastic waistline structure. According to the elastic waistline structure easy to thermally weld, the elastic waistline comprises outer waistline cloth, inner waistline cloth and spandex filaments arranged between the outer waistline cloth and the inner waistline cloth, the outer waistline cloth comprises an outer side piece and an inner side piece, and the outer side piece and the inner side piece are integrally connected through a turnover part (in the specific implementation process, the turnover part is provided with a turnover hole; one side of the outer waistline cloth is folded to form an outer side piece, an inner side piece and a folding part integrally connected with the outer side piece and the inner side piece, the inner side piece is connected with the inner waistline cloth, a bubble-shaped sheet is arranged at the position close to the folding part, one side of the bubble-shaped sheet is close to the folding part, and the other side of the bubble-shaped sheet is close to the folding part. And the other side extends along the direction far away from the folding part and is connected with one side, close to the folding part, of the inner waistline cloth in a joining manner.

Description

Technical Field

[0001] This utility model belongs to the field of disposable hygiene products technology, specifically relating to an elastic waistband structure that is easy to heat weld and a trouser-style diaper containing the structure. Background Technology

[0002] Currently, as disposable absorbent products are developing towards greater comfort, breathability, and fit, elastic waistbands are widely used in disposable absorbent products. In the field of disposable absorbent products such as baby diapers and trouser diapers (baby pull-ups or menstrual pants, etc.), these products all have the common feature of having elastic waistbands, which are used to adjust the fit of the absorbent products when worn, making them comfortable to wear, without causing marks on the skin, and providing a better experience.

[0003] With the trend of product premiumization, existing elastic waistbands are also developing in the direction of greater comfort and better experience, such as bubble-shaped elastic waistbands. These bubble-shaped elastic waistbands increase the contact area with the skin, reduce skin marks, and make them more comfortable to wear.

[0004] In specific implementation cases, as shown in the appendix Figure 1 As shown, the main components of the existing elastic waistband include an outer waistband fabric 1, an inner waistband fabric 2, and spandex yarn 3. When the diaper is in use and being worn, a bubble-shaped sheet 3 is sandwiched between the outer waistband fabric and the inner waistband fabric at the end position corresponding to the contact between the elastic waistband and the waist. The layers of materials are then connected together by heat welding to form a bubble-shaped elastic waistband.

[0005] However, existing bubble-shaped elastic waistbands extend or continue one side of the inner waistband fabric 2 to the end position, that is, directly to the folded position of the outer waistband fabric (folded portion 12), and abut against the outer waistband fabric at the folded position, as shown in the attached figure. Figure 1 As shown. Clearly, in the existing structure, the inner waistband fabric covers a bubble-like sheet, thus forming a multi-layered structure in region A. Obviously, this multi-layered structure increases the thickness of the elastic waistband, and this increased thickness not only reduces the softness and comfort of the bubble-like elastic waistband but also increases the difficulty of heat welding, such as the heat welding temperature and welding time.

[0006] To address the aforementioned issues, this application provides a structure that effectively reduces the number of layers in the bubble-like elastic waistband's stacked area, resulting in a more comfortable and well-fitting bubble-like elastic waistband. This structure also makes heat welding easier. Utility Model Content

[0007] This invention addresses the aforementioned problems by optimizing the layout and structure of the bubble-shaped elastic waistband. This effectively reduces the number of layers in the bubble-shaped elastic waistband, resulting in a more comfortable and well-fitting design. The structure also makes heat welding easier, giving the bubble-shaped elastic waistband excellent softness and comfort. Due to its large contact area, the elastic waistband is less likely to constrict the skin, reducing the feeling of tightness.

[0008] To solve the above problems and achieve the above objectives, this utility model adopts the following technical solution:

[0009] The easily heat-welded elastic waistband structure comprises an outer waistband fabric, an inner waistband fabric, and spandex yarn disposed between the two. The outer waistband fabric includes an outer side panel and an inner side panel, which are integrally connected by a folding portion (in a specific implementation, one side of the outer waistband fabric is folded to form the outer side panel, the inner side panel, and the folding portion integrally connecting the outer side panel and the inner side panel). The inner side panel is connected to the inner waistband fabric. Its structural features are as follows:

[0010] A bubble-shaped sheet is provided near the folded portion. One side of the bubble-shaped sheet is close to the folded portion, while the other side extends away from the folded portion and is connected to the side of the inner waistband fabric near the folded portion.

[0011] Preferably, the connection is a side-layered connection. Specifically, the layer width of the side-layered connection is less than 5mm.

[0012] Preferably, one side of the bubble-shaped sheet is folded at the folding portion to form a bubble-shaped sheet folding portion and a bubble-shaped folded sheet integrally connected to the bubble-shaped sheet folding portion. Specifically, the width of the bubble-shaped folded sheet is less than 5mm. The bubble-shaped folded sheet overlaps and supports the folding portion, causing the folding portion to be supported into a three-dimensional shape.

[0013] Specifically, the width of the bubble-like sheet is 30-50 mm.

[0014] Based on the above solution, a trouser-style diaper is further provided, including a liquid-permeable top layer, a liquid-impermeable bottom layer, and an absorbent core disposed between the liquid-permeable top layer and the liquid-impermeable bottom layer. An elastic waistband for fit adjustment is provided at the end of the trouser-style diaper. The elastic waistband is characterized by having the elastic waistband structure that is easy to heat weld as described in this application.

[0015] The beneficial effects achieved by this utility model are as follows:

[0016] This invention effectively reduces the number of layers in the bubble-shaped elastic waistband by optimizing the layout and structure of the layered areas, resulting in a more comfortable and well-fitting bubble-shaped elastic waistband. This structure also facilitates heat welding, giving the bubble-shaped elastic waistband excellent softness and comfort. Because of its large contact area, the elastic waistband is less likely to constrict the skin, reducing the feeling of tightness. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the cross-sectional structure of an existing bubble-shaped elastic waistband.

[0018] Figure 2 This is a schematic diagram of the cross-sectional structure of the elastic waistband structure that is easy to heat weld according to this application.

[0019] Figure 3 This is a schematic diagram of the side-layered connection, the bubble-shaped sheet folding section, and the bubble-shaped folded sheet.

[0020] Figure 4 yes Figure 3 A magnified view of part B.

[0021] Figure 5 This is a schematic diagram of the structure with reduced number of layers in the bubble-like elastic waistband layered area. Detailed Implementation

[0022] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0023] Existing disposable absorbent products, such as baby diapers, baby pull-ups, adult diapers, and menstrual pants, share common structural features, including a liquid-permeable top layer (surface layer), a liquid-impermeable bottom layer, and an absorbent core located between the two. This core can be a composite absorbent core or a traditional fluff pulp / absorbent polymer (Absorbent Polymer) blend. Furthermore, most of these products feature an elastic waistband around the end of the disposable hygiene product. This elasticity allows for better dynamic adjustment during use, resulting in a more comfortable wearing experience and preventing leakage.

[0024] Specifically, existing elastic waistbands all include an outer waistband fabric 1, an inner waistband fabric 2, and spandex yarn 4 disposed between the outer waistband fabric 1 and the inner waistband fabric 2.

[0025] Please also refer to the appendix. Figure 2-5The elastic waistband structure of this utility model, which is easy to heat weld, includes an outer waistband fabric 1, an inner waistband fabric 2, and spandex yarn 4 disposed between the two. The outer waistband fabric 1 includes an outer side panel 11 and an inner side panel 13, which are integrally connected by a folding portion 12. Specifically, in implementation, one side of the outer waistband fabric 1 is folded to form the outer side panel 11, the inner side panel 13, and the folding portion 12 integrally connecting the outer side panel and the inner side panel. The inner side panel 13 is connected to the inner waistband fabric 2.

[0026] Specifically, this application has the following structural features:

[0027] A bubble-shaped sheet 3 is provided near the folded portion 12. One side of the bubble-shaped sheet 3 is close to the folded portion 12, while the other side extends away from the folded portion and is connected to the side of the inner waistband fabric 2 near the folded portion. The bubble-shaped sheet 3 is an existing material and can be obtained by those skilled in the art from commercially available products.

[0028] Specifically, the connecting connection is a side-side stacked connection 6. In a specific embodiment, the stacking width of the side-side stacked connection 6 is less than 5mm.

[0029] In a specific embodiment, the bubble-like sheet 3 is implemented as follows:

[0030] In some embodiments, only one side of the bubble-shaped sheet 3 is brought close to the folding portion 12, that is, the side of the bubble-shaped sheet 3 near the folding portion is not folded, while the other side extends in a direction away from the folding portion.

[0031] However, in other embodiments, one side of the bubble-shaped sheet 3 is folded at the folding portion, thereby forming a bubble-shaped sheet folding portion 31 and a bubble-shaped folded sheet 32 ​​integrally connected to the bubble-shaped sheet folding portion. In a specific embodiment, the width of the bubble-shaped folded sheet is less than 5 mm. The bubble-shaped folded sheet 32 ​​is overlapped and supported by the folding portion 12, so that the folding portion 12 is supported to form a three-dimensional shape.

[0032] In a specific embodiment, the width of the bubble-like sheet 3 is 30-50mm.

[0033] The thermal welding described in this application mainly includes traditional hot roller thermal welding, ultrasonic thermal welding, or infrared thermal welding. All existing technologies in this field that achieve welding (thermal fusion) of nonwoven materials through heating are applicable to this application, and this application does not impose any specific limitations on them.

[0034] As attached Figure 5As shown, this application effectively reduces the number of layers in the bubble-shaped elastic waistband layer area C by designing the layout and structure of the bubble-shaped elastic waistband layer area, thus achieving a more comfortable and fit bubble-shaped elastic waistband. This structure also makes heat welding easier, giving the bubble-shaped elastic waistband excellent softness and comfort.

[0035] Based on the above solution, a trouser-style diaper is further provided, including a liquid-permeable top layer, a liquid-impermeable bottom layer, and an absorbent core disposed between the liquid-permeable top layer and the liquid-impermeable bottom layer. An elastic waistband for fit adjustment is provided at the end of the trouser-style diaper. Its structural feature is that the elastic waistband has the elastic waistband structure that is easy to heat weld as described in this application.

[0036] The elastic waistband of this application has a large contact area, which makes it less likely to constrict the skin during use and reduces the feeling of tightness on the skin.

[0037] The foregoing description illustrates and describes preferred embodiments of the present invention. As previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the inventive concept described herein through the foregoing teachings or related technical or knowledge. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. An elastic waist structure easy to heat-weld, said elastic waist comprising an outer waist sheet, an inner waist sheet and spandex filaments provided between the two, said outer waist sheet comprising an outer side sheet and an inner side sheet, said outer side sheet and inner side sheet being integrally connected by a fold portion, said inner side sheet being connected to the inner waist sheet, characterized in that: a bubble sheet is provided at a position proximate to said fold portion, one side of said bubble sheet being proximate to said fold portion and the other side extending away from said fold portion and being connected to the inner waist sheet proximate to said fold portion. Said connection is a side-by-side connection.

2. The elastic waist structure susceptible to heat welding of claim 1, wherein: The width of said side-by-side connection is less than 5mm.

3. The elastic waist structure susceptible to heat welding of claim 2, wherein: One side of said bubble sheet is folded at said fold portion, thereby forming a bubble fold portion and a bubble fold sheet integrally connected to said bubble fold portion.

4. The elastic waist structure susceptible to heat welding of claim 1, wherein: The width of said bubble fold sheet is less than 5mm.

5. The elastic waist structure susceptible to heat welding of claim 4, wherein: Said bubble fold sheet is superimposed on and supported by said fold portion, such that said fold portion is raised to form a three-dimensional structure.

6. The elastic waist structure susceptible to heat welding of claim 4, wherein: The width of said bubble sheet is 30-50mm.

7. The elastic waist structure susceptible to heat welding according to any of claims 1-6, characterized in that: Said elastic waist is provided with an elastic waist structure easy to heat-weld as claimed in any one of claims 1-7.

8. A pant-type paper diaper comprising a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent core body provided between the liquid-permeable top sheet and the liquid-impermeable back sheet, and elastic waistbands provided at end portions of the pant-type paper diaper for body fitting adjustment, characterized in that: ​

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