Elastic layer for wearable hygiene products and its preparation method

Abstract

This invention relates to an elastic layer for wearable sanitary products and its preparation method. The elastic layer for wearable sanitary products includes: N layers of nonwoven fabric stacked sequentially, where N is an integer greater than or equal to 3; and (N-1) groups of elastic bands, each group of (N-1) elastic bands containing multiple elastic bands; wherein a group of elastic bands is disposed between two adjacent layers of nonwoven fabric, and the spacing between two adjacent elastic bands in each group is 0.2 to 12 mm, and the projections of adjacent groups of elastic bands in the vertical direction are staggered, such that the combined spacing of adjacent elastic bands is 0.1 to 6 mm. The elastic layer for wearable sanitary products of this invention, by staggering the projections of at least two groups of elastic bands in the vertical direction, allows the manufactured elastic layer to meet the requirement of smaller spacing while reducing the precision requirements of the spraying device, thereby reducing the cost and difficulty of spraying during the manufacturing process.

Description

Technical Field

[0001] This invention relates to the field of hygiene care, and more particularly to an elastic layer for wearable hygiene products and a method for preparing the same. Background Technology

[0002] Wearable hygiene products have an elastic layer in the waistband to provide elasticity, allowing the diapers / pull-ups to fit users with different waist sizes.

[0003] Existing elastic layers typically consist of two layers of non-woven fabric with multiple elastic bands inserted between them. To ensure elasticity, manufacturers aim to minimize the spacing between these elastic bands. However, during the fabrication of the elastic layer, adhesive is usually applied to each elastic band. The process involves placing multiple elastic bands into the slots of a specialized spraying device, one band per slot, and then applying adhesive using a spray gun. This method has the following drawbacks:

[0004] The smaller the gap between the rubber bands, the higher the precision requirement for the gap of the spraying device. Ordinary spraying devices are difficult to meet this precision requirement, which increases the cost and difficulty of spraying.

[0005] The information disclosed in the background section of this invention is intended only to enhance the understanding of the overall background of the invention and should not be construed as an admission or in any way implying that such information constitutes prior art known to those skilled in the art. Summary of the Invention

[0006] The purpose of this invention is to provide an elastic layer for wearable hygiene products and a method for preparing the same. The elastic layer is made by arranging multiple first elastic bands and multiple second elastic bands in an alternating manner in the vertical direction. This allows the elastic layer to meet the requirement of small spacing while reducing the precision requirements of the spraying device, thereby reducing the cost and difficulty of spraying during the manufacturing process.

[0007] According to a first aspect of the present invention, an elastic layer for wearable hygiene products is provided, comprising: N layers of nonwoven fabric stacked sequentially, where N is an integer greater than or equal to 3; and (N-1) groups of elastic bands, each group of elastic bands comprising multiple elastic bands; wherein a group of elastic bands is disposed between adjacent two layers of nonwoven fabric, and the spacing between adjacent elastic bands in each group of elastic bands is 0.2 to 12 mm, and the projections of adjacent groups of elastic bands in the vertical direction are staggered, such that the combined spacing of adjacent elastic bands is 0.1 to 6 mm.

[0008] Preferably, the elastic layer for wearable hygiene products comprises: a first nonwoven fabric, a second nonwoven fabric, and a third nonwoven fabric stacked sequentially; multiple first elastic bands forming a first group of elastic bands, the multiple first elastic bands being disposed between the first nonwoven fabric and the second nonwoven fabric, and the spacing between two adjacent elastic bands in the multiple first elastic bands being 0.2 to 12 mm; and multiple second elastic bands forming a second group of elastic bands, the multiple second elastic bands being disposed between the second nonwoven fabric and the third nonwoven fabric, and the spacing between two adjacent elastic bands in the multiple second elastic bands being 0.2 to 12 mm; wherein the projections of the multiple first elastic bands and the multiple second elastic bands in the vertical direction are staggered, such that the combined spacing between adjacent first elastic bands and second elastic bands is 0.1 to 6 mm.

[0009] Preferably, the elastic layer for wearable hygiene products comprises: a first nonwoven fabric, a second nonwoven fabric, a third nonwoven fabric, and a fourth nonwoven fabric stacked sequentially; multiple first elastic bands forming a first group of elastic bands, the multiple first elastic bands being disposed between the first nonwoven fabric and the second nonwoven fabric, and the spacing between two adjacent elastic bands in the multiple first elastic bands being 0.2 to 12 mm; multiple second elastic bands forming a second group of elastic bands, the multiple second elastic bands being disposed between the second nonwoven fabric and the third nonwoven fabric, and the spacing between two adjacent elastic bands in the multiple second elastic bands being 0.2 to 12 mm; and multiple third elastic bands forming a third group of elastic bands, the multiple third elastic bands being disposed between the third nonwoven fabric and the fourth nonwoven fabric, and the spacing between two adjacent elastic bands in the multiple third elastic bands being 0.2 to 12 mm; wherein the projections of the multiple first elastic bands, the multiple second elastic bands, and the multiple third elastic bands in the vertical direction are staggered, such that the combined spacing between adjacent elastic bands is 0.1 to 6 mm.

[0010] Preferably, the elastic layer for wearable hygiene products comprises: a first nonwoven fabric, a second nonwoven fabric, a third nonwoven fabric, a fourth nonwoven fabric, and a fifth nonwoven fabric stacked sequentially; multiple first elastic bands forming a first group of elastic bands, the multiple first elastic bands being disposed between the first nonwoven fabric and the second nonwoven fabric, and the spacing between adjacent elastic bands in the multiple first elastic bands being 0.2 to 12 mm; and multiple second elastic bands forming a second group of elastic bands, the multiple second elastic bands being disposed between the second nonwoven fabric and the third nonwoven fabric, and the spacing between adjacent elastic bands in the multiple second elastic bands being 0.2 to 12 mm; multiple... The third elastic band, which constitutes the third group of elastic bands, is arranged between the third and fourth nonwoven fabrics, and the spacing between two adjacent elastic bands in the multiple third elastic bands is 0.2 to 12 mm; the fourth elastic band, which constitutes the fourth group of elastic bands, is arranged between the fourth and fifth nonwoven fabrics, and the spacing between two adjacent elastic bands in the multiple fourth elastic bands is 0.2 to 12 mm; wherein, the projections of the multiple first elastic bands, multiple second elastic bands, multiple third elastic bands and multiple fourth elastic bands in the vertical direction are staggered, so that the combined spacing of adjacent elastic bands is 0.1 to 6 mm.

[0011] Preferably, multiple first elastic bands are distributed at equal intervals, and multiple second elastic bands are distributed at equal intervals.

[0012] Preferably, multiple first elastic bands are distributed at equal intervals, multiple second elastic bands are distributed at equal intervals, and multiple third elastic bands are distributed at equal intervals.

[0013] Preferably, multiple first elastic bands are distributed at equal intervals, multiple second elastic bands are distributed at equal intervals, multiple third elastic bands are distributed at equal intervals, and multiple fourth elastic bands are distributed at equal intervals.

[0014] Preferably, the elastic band has an average density of 10 dtex to 440 dtex.

[0015] Preferably, at least one of the (N-2) layers of nonwoven fabric in the N layers is a discontinuous nonwoven fabric.

[0016] According to a second aspect of the present invention, a method for preparing an elastic layer for wearable hygiene products is provided, comprising: preparing N layers of nonwoven fabric, where N is an integer greater than or equal to 3; forming a group of elastic bands between any two adjacent layers of nonwoven fabric, each group of elastic bands comprising multiple elastic bands, wherein the spacing between two adjacent elastic bands in each group of elastic bands is 0.2 to 12 mm; sequentially stacking N layers of nonwoven fabric, wherein the projections of (N-1) groups of elastic bands in the vertical direction are staggered, and the combined spacing between adjacent elastic bands is 0.1 to 6 mm.

[0017] Preferably, before forming a set of elastic bands between any two adjacent layers of nonwoven fabric, the method further includes: spraying adhesive onto multiple elastic bands; wherein the elastic bands are bonded to their adjacent two layers of nonwoven fabric by the adhesive, and each layer of nonwoven fabric is bonded to its adjacent nonwoven fabric by the adhesive sprayed onto the elastic bands.

[0018] Preferably, before forming a set of elastic bands between any two adjacent layers of nonwoven fabric, the method further includes: spraying adhesive onto one of the surfaces of the two adjacent layers of nonwoven fabric that are in contact with each other; wherein the elastic bands are bonded to the two adjacent layers of nonwoven fabric by the adhesive, the two adjacent layers of nonwoven fabric being bonded by the adhesive.

[0019] Preferably, the method for preparing the elastic layer for wearable hygiene products includes: preparing three layers of nonwoven fabric, the three layers of nonwoven fabric including a first nonwoven fabric, a second nonwoven fabric and a third nonwoven fabric; laying multiple first elastic bands on the upper surface of the first nonwoven fabric, the spacing between two adjacent elastic bands being 0.2 to 12 mm; laying multiple second elastic bands on the lower surface of the third nonwoven fabric, the spacing between two adjacent second elastic bands being 0.2 to 12 mm; layering the second nonwoven fabric on the side of the first nonwoven fabric where the first elastic bands are laid; layering the side of the third nonwoven fabric where the second elastic bands are laid on the second nonwoven fabric, and arranging the projections of the multiple first elastic bands and the multiple second elastic bands in the vertical direction in an alternating manner, the combined spacing between adjacent first elastic bands and second elastic bands being 0.1 to 6 mm.

[0020] Preferably, the method for preparing the elastic layer for wearable hygiene products includes: preparing three layers of nonwoven fabric, the three layers of nonwoven fabric including a first nonwoven fabric, a second nonwoven fabric and a third nonwoven fabric; laying multiple first elastic bands on the lower surface of the second nonwoven fabric, laying multiple second elastic bands on the upper surface of the second nonwoven fabric, the spacing between two adjacent elastic bands in the multiple first elastic bands is 0.2 to 12 mm, the spacing between two adjacent elastic bands in the multiple second elastic bands is 0.2 to 12 mm, the projections of the multiple first elastic bands and the multiple second elastic bands in the vertical direction are staggered, and the combined spacing of adjacent first elastic bands and second elastic bands is 0.1 to 6 mm; layering the second nonwoven fabric on the first nonwoven fabric; and layering the third nonwoven fabric on the second nonwoven fabric.

[0021] Preferably, the method for preparing the elastic layer for wearable hygiene products includes: preparing three layers of nonwoven fabric, the three layers of nonwoven fabric including a first nonwoven fabric, a second nonwoven fabric and a third nonwoven fabric; laying multiple first elastic bands on the upper surface of the first nonwoven fabric, the spacing between two adjacent elastic bands being 0.2 to 12 mm; layering a second nonwoven fabric on the first nonwoven fabric; laying multiple second elastic bands on the upper surface of the second nonwoven fabric, the spacing between two adjacent second elastic bands being 0.2 to 12 mm, and arranging the projections of the multiple first elastic bands and the multiple second elastic bands in the vertical direction in an alternating manner, the combined spacing between adjacent first elastic bands and second elastic bands being 0.1 to 6 mm; and layering a third nonwoven fabric on the second nonwoven fabric.

[0022] Preferably, the method for preparing the elastic layer for wearable hygiene products includes: preparing four layers of nonwoven fabric, the four layers including a first nonwoven fabric, a second nonwoven fabric, a third nonwoven fabric, and a fourth nonwoven fabric; laying multiple first elastic bands on the upper surface of the first nonwoven fabric, the spacing between adjacent elastic bands being 0.2 to 12 mm; laying multiple second elastic bands on the lower surface of the third nonwoven fabric; and laying multiple third elastic bands on the upper surface of the third nonwoven fabric, the spacing between adjacent second elastic bands being 0.2 to 12 mm. The spacing is 0.2 to 12 mm, and the spacing between two adjacent elastic bands in the multiple third elastic bands is 0.2 to 12 mm; the second nonwoven fabric is layered on the first nonwoven fabric; the side of the third nonwoven fabric with the second elastic band is layered on the second nonwoven fabric; the fourth nonwoven fabric is layered on the third nonwoven fabric, and the projections of the multiple first elastic bands, multiple second elastic bands and multiple third elastic bands in the vertical direction are staggered, and the combined spacing of adjacent first elastic bands, second elastic bands and third elastic bands is 0.1 to 6 mm.

[0023] Preferably, the method for preparing the elastic layer for wearable hygiene products includes: preparing four layers of nonwoven fabric, the four layers including a first nonwoven fabric, a second nonwoven fabric, a third nonwoven fabric, and a fourth nonwoven fabric; laying multiple first elastic bands on the lower surface of the second nonwoven fabric, laying multiple second elastic bands on the upper surface of the second nonwoven fabric, laying multiple third elastic bands on the lower surface of the third nonwoven fabric, and laying multiple fourth elastic bands on the upper surface of the fourth nonwoven fabric, wherein the spacing between adjacent elastic bands is 0.2 to 12 μm. m, the spacing between two adjacent elastic bands in the multiple second elastic bands is 0.2 to 12 mm, the spacing between two adjacent elastic bands in the multiple third elastic bands is 0.2 to 12 mm, the projections of the multiple first elastic bands, multiple second elastic bands and multiple third elastic bands in the vertical direction are staggered, and the combined spacing of adjacent first elastic bands, second elastic bands and third elastic bands is 0.1 to 6 mm; the second nonwoven fabric is layered on the first nonwoven fabric; the third nonwoven fabric is layered on the second nonwoven fabric; the fourth nonwoven fabric is layered on the third nonwoven fabric.

[0024] Preferably, the method for preparing the elastic layer for wearable hygiene products includes: preparing four layers of nonwoven fabric, the four layers including a first nonwoven fabric, a second nonwoven fabric, a third nonwoven fabric, and a fourth nonwoven fabric; laying multiple first elastic bands on the upper surface of the first nonwoven fabric, the spacing between adjacent elastic bands being 0.2 to 12 mm; layering a second nonwoven fabric on top of the first nonwoven fabric; and laying multiple second elastic bands on the upper surface of the second nonwoven fabric, the spacing between adjacent second elastic bands being 0.2 to 12 mm. The spacing between the elastic bands is 0.2 to 12 mm; a third nonwoven fabric is layered on the second nonwoven fabric; multiple third elastic bands are laid on the upper surface of the third nonwoven fabric, with the spacing between two adjacent third elastic bands being 0.2 to 12 mm; the projections of multiple first elastic bands, multiple second elastic bands, and multiple third elastic bands in the vertical direction are staggered, and the combined spacing of adjacent first elastic bands, second elastic bands, and third elastic bands is 0.1 to 6 mm; a fourth nonwoven fabric is layered on the third nonwoven fabric.

[0025] Preferably, the method for preparing the elastic layer for wearable hygiene products includes: preparing five layers of nonwoven fabric, the five layers of nonwoven fabric including a first nonwoven fabric, a second nonwoven fabric, a third nonwoven fabric, a fourth nonwoven fabric, and a fifth nonwoven fabric; laying multiple first elastic bands on the upper surface of the first nonwoven fabric, the spacing between adjacent elastic bands being 0.2 to 12 mm; layering a second nonwoven fabric on the first nonwoven fabric; laying multiple second elastic bands on the upper surface of the second nonwoven fabric, the spacing between adjacent second elastic bands being 0.2 to 12 mm; layering a third nonwoven fabric on the second nonwoven fabric; and in the fifth nonwoven fabric... Multiple third elastic bands are laid on the upper surface of the three nonwoven fabrics, with the spacing between adjacent third elastic bands being 0.2 to 12 mm; a fourth nonwoven fabric is layered on top of the third nonwoven fabric; multiple fourth elastic bands are laid on the upper surface of the fourth nonwoven fabric, with the spacing between adjacent fourth elastic bands being 0.2 to 12 mm; the projections of multiple first elastic bands, multiple second elastic bands, multiple third elastic bands, and multiple fourth elastic bands are staggered in the vertical direction, and the combined spacing of adjacent first elastic bands, second elastic bands, third elastic bands, and fourth elastic bands is 0.1 to 6 mm; a fifth nonwoven fabric is layered on top of the fourth nonwoven fabric.

[0026] The elastic layer for wearable hygiene products of the present invention, by means of at least two sets of elastic bands arranged in an alternating pattern in the vertical direction, allows the manufactured elastic layer to meet the requirements of small spacing while reducing the precision requirements of the spraying device, thereby reducing the cost and difficulty of spraying during the manufacturing process.

[0027] The methods and apparatus of the present invention have other features and advantages that will be apparent from or will be set forth in detail in the accompanying drawings and subsequent embodiments incorporated herein, which together serve to explain the particular principles of the invention. Attached Figure Description

[0028] Figure 1A A schematic diagram of the internal structure of an elastic layer for wearable hygiene products provided for an embodiment of the present invention;

[0029] Figure 1B for Figure 1A Corresponding exploded view;

[0030] Figure 2A A schematic diagram of the internal structure of a second elastic layer for wearable hygiene products provided for an embodiment of the present invention;

[0031] Figure 2B for Figure 2A Corresponding exploded view;

[0032] Figure 3A A schematic diagram of the internal structure of a third type of elastic layer for wearable hygiene products provided for an embodiment of the present invention;

[0033] Figure 3B for Figure 3A Corresponding exploded view;

[0034] Figure 4 A schematic diagram of the internal structure of a fourth type of elastic layer for wearable hygiene products provided for an embodiment of the present invention;

[0035] Figure 5A A schematic diagram of the internal structure of the fifth elastic layer for wearable hygiene products provided for an embodiment of the present invention;

[0036] Figure 5B A schematic diagram of the internal structure of the sixth elastic layer for wearable hygiene products provided for an embodiment of the present invention;

[0037] Figure 5C A schematic diagram of the internal structure of the elastic layer for wearable hygiene products provided for an embodiment of the present invention;

[0038] Figure 5D A schematic diagram of the internal structure of an elastic layer for wearable hygiene products provided for an embodiment of the present invention;

[0039] Figure 5E A schematic diagram of the internal structure of the elastic layer for wearable hygiene products provided for an embodiment of the present invention;

[0040] Figure 5F A schematic diagram of the internal structure of the tenth elastic layer for wearable hygiene products provided for an embodiment of the present invention;

[0041] Figure 5GA schematic diagram of the internal structure of an elastic layer for wearable hygiene products provided for an embodiment of the present invention;

[0042] Figure 5H A schematic diagram of the internal structure of the twelfth elastic layer for wearable hygiene products provided for an embodiment of the present invention;

[0043] Figure 5I A schematic diagram of the internal structure of the thirteenth elastic layer for wearable hygiene products provided in the embodiment of the present invention;

[0044] Figure 6 A schematic diagram of the internal structure of the fourteenth elastic layer for wearable hygiene products provided for an embodiment of the present invention;

[0045] Figure 7A Schematic diagram 1 showing the discontinuity of nonwoven fabric;

[0046] Figure 7B Schematic diagram 2 for discontinuous nonwoven fabric;

[0047] Figure 8 A schematic flowchart of a method for preparing an elastic layer for wearable hygiene products according to an embodiment of the present invention;

[0048] Figure 9 A schematic flowchart of a second method for preparing an elastic layer for wearable hygiene products, provided for an embodiment of the present invention.

[0049] Explanation of reference numerals in the attached figures:

[0050] 101: First nonwoven fabric; 102: Second nonwoven fabric

[0051] 103: Third nonwoven fabric 104: Fourth nonwoven fabric

[0052] 105: The Fifth Nonwoven Fabric

[0053] 201: First elastic band; 202: Second elastic band

[0054] 203: Third elastic band; 204: Fourth elastic band.

[0055] It should be understood that the accompanying drawings are not necessarily drawn to scale, but rather present simplified representations of various features to illustrate the basic principles of the invention. Specific design features disclosed in this invention (including, for example, specific dimensions, orientations, positions, and shapes) will be determined in part by the specific environment in which they are intended for application and use.

[0056] Throughout these figures, the same reference numerals denote the same or equivalent parts of the invention. Detailed Implementation

[0057] Reference will now be made in detail to various embodiments of the invention, examples of which are presented in the accompanying drawings and described below. Although the invention will be described in conjunction with exemplary embodiments, it should be understood that this specification is not intended to limit the invention to these exemplary embodiments. Rather, the invention is intended to cover not only these exemplary embodiments, but also various alternatives, modifications, equivalents, and other embodiments that may be included within the spirit of the invention and the scope defined by the appended claims.

[0058] When a component is described as being "above" or "on top of" another component, that component may be in contact with the other component, or there may be an intermediate component present.

[0059] The wearable hygiene products mentioned in the embodiments of this invention include, but are not limited to, baby diapers / pull-up pants, women's sleeping pants, and adult diapers / pull-up pants.

[0060] Figures 1A to 4 The implementation plans all include three layers of non-woven fabric and two sets of elastic bands.

[0061] Figures 5A to 5I The implementation plans all include four layers of non-woven fabric and three sets of elastic bands.

[0062] Figure 6 The implementation plan includes five layers of non-woven fabric and four sets of elastic bands.

[0063] Figure 1A , Figure 2A , Figure 3A , Figure 4 , Figures 5A to 5I and Figure 6 All implementation plans are sectional views.

[0064] The following is combined with Figures 1A to 6 An elastic layer for wearable hygiene products according to an embodiment of the present invention will be described.

[0065] The elastic layer for wearable hygiene products according to an embodiment of the present invention comprises: N layers of nonwoven fabric and (N-1) groups of elastic bands.

[0066] N layers of nonwoven fabric are stacked sequentially, where N is an integer greater than or equal to 3. Each group of (N-1) elastic bands contains multiple elastic bands.

[0067] Among them, a set of elastic bands is set between two adjacent layers of non-woven fabric, and the spacing between two adjacent elastic bands in each set is 0.2 to 12 mm. The projections of the two adjacent sets of elastic bands in the vertical direction are staggered, so that the combined spacing of adjacent elastic bands is 0.1 to 6 mm.

[0068] The elastic layer for wearable hygiene products according to the embodiments of the present invention is made by at least two sets of elastic bands arranged in an alternating pattern in the vertical direction. This allows the elastic layer to meet the requirement of a small spacing while reducing the precision requirements of the spraying device, thereby reducing the cost and difficulty of spraying during the manufacturing process.

[0069] Example 1

[0070] Figure 1A A schematic diagram of the internal structure of an elastic layer for wearable hygiene products provided for an embodiment of the present invention; Figure 1B for Figure 1A The corresponding exploded 3D diagram.

[0071] like Figure 1A and Figure 1B As shown, the elastic layer for wearable hygiene products in Embodiment 1 includes: a first nonwoven fabric 101, a second nonwoven fabric 102, a third nonwoven fabric 103, multiple first elastic bands 201 and multiple second elastic bands 202.

[0072] The first nonwoven fabric 101, the second nonwoven fabric 102, and the third nonwoven fabric 103 are stacked in sequence.

[0073] Multiple first elastic bands 201 constitute a first group of elastic bands. These multiple first elastic bands 201 are disposed between the first nonwoven fabric 101 and the second nonwoven fabric 102, and the spacing D1 between adjacent elastic bands 201 is 0.2 to 12 mm (e.g., 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1 mm, 1.1 mm, 1.2 mm, 1.3 mm, 1.4 mm, 1.5 mm, 1.6 mm, 1.7 mm, 1.8 mm, 1.9 mm, 2 mm, 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, 10 mm, 11 mm, 12 mm). Preferably, the spacing D1 between adjacent elastic bands 201 is 2 to 12 mm.

[0074] Multiple second elastic bands 202 constitute a second group of elastic bands. These multiple second elastic bands 202 are disposed between the second nonwoven fabric 102 and the third nonwoven fabric 103, and the spacing D2 between adjacent elastic bands 202 is 0.2 to 12 mm (e.g., 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1 mm, 1.1 mm, 1.2 mm, 1.3 mm, 1.4 mm, 1.5 mm, 1.6 mm, 1.7 mm, 1.8 mm, 1.9 mm, 2 mm, 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, 10 mm, 11 mm, 12 mm). Preferably, the spacing D2 between adjacent elastic bands 202 is 2 to 12 mm.

[0075] The projections of multiple first elastic bands 201 and multiple second elastic bands 202 in the vertical direction are staggered, such that the combined spacing D0 between adjacent first elastic bands 201 and second elastic bands 202 is 0.1 to 6 mm (e.g., 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm, 3.5 mm, 4 mm, 4.5 mm, 5 mm, 5.5 mm, 6 mm). Preferably, the combined spacing D0 between adjacent first elastic bands 201 and second elastic bands 202 is 1 to 6 mm.

[0076] In Example 1, by arranging multiple first elastic bands 201 and multiple second elastic bands 202 in an alternating manner in the vertical direction, the resulting elastic layer can meet the requirements of a small spacing while reducing the precision requirements of the spraying device, thereby reducing the cost and difficulty of spraying during the manufacturing process.

[0077] For example, in the prior art, when the spacing between adjacent rubber bands is 3mm, the gap accuracy of the spraying device is also required to be 3mm.

[0078] When adopting the implementation scheme of Example 1, when the spacing between adjacent first elastic bands 201 and second elastic bands 202 is also 3mm (i.e., D0 is 3mm), since the projections of multiple first elastic bands 201 and multiple second elastic bands 202 are staggered in the vertical direction, it is only necessary for the spacing between two adjacent elastic bands in the multiple first elastic bands 201 to be 6mm (i.e., D1 is 6mm), and it is only necessary for the spacing between two adjacent elastic bands in the multiple second elastic bands 202 to be 6mm (i.e., D2 is 6mm). At this time, it is only necessary for the gap accuracy of the spraying device to be 6mm.

[0079] In an exemplary embodiment, the first nonwoven fabric 101, the second nonwoven fabric 102, and the third nonwoven fabric 103 may be selected from spunlace fabric, spunbond fabric, or spunmelt fabric.

[0080] When the diaper is worn, the first nonwoven fabric 101, the second nonwoven fabric 102, the third nonwoven fabric 103, the multiple first elastic bands 201 and the multiple second elastic bands 202 of the elastic layer of the wearable hygiene product extend along the circumference of the waist of the human body.

[0081] It should be noted that in this invention Figures 1A to 6 These only illustrate the approximate shape of each layer and the general positional relationship between them. To better distinguish the boundaries between layers, in Figures 1A to 6 The diagram illustrates the gaps between the layers, but in the actual product, there are no gaps between the first nonwoven fabric 101, the second nonwoven fabric 102, and the third nonwoven fabric 103; they are bonded together.

[0082] In an exemplary embodiment, the peel strength between the first nonwoven fabric 101 and the second nonwoven fabric 102 is from about 1 N / cm to about 15 N / cm (e.g., 1 N / cm, 2 N / cm, 3 N / cm, 4 N / cm, 5 N / cm, 6 N / cm, 7 N / cm, 8 N / cm, 9 N / cm, 10 N / cm, 11 N / cm, 12 N / cm, 13 N / cm, 14 N / cm, 15 N / cm).

[0083] In an exemplary embodiment, the peel strength between the second nonwoven fabric 102 and the third nonwoven fabric 103 is from about 1 N / cm to about 15 N / cm (e.g., 1 N / cm, 2 N / cm, 3 N / cm, 4 N / cm, 5 N / cm, 6 N / cm, 7 N / cm, 8 N / cm, 9 N / cm, 10 N / cm, 11 N / cm, 12 N / cm, 13 N / cm, 14 N / cm, 15 N / cm).

[0084] In an exemplary embodiment, adhesive is sprayed onto the first elastic band 201. The first nonwoven fabric 101 is bonded to the second nonwoven fabric 102 by the adhesive sprayed onto the first elastic band 201.

[0085] In an exemplary embodiment, adhesive is sprayed onto the second elastic band 202. The second nonwoven fabric 102 is bonded to the third nonwoven fabric 103 by the adhesive sprayed onto the second elastic band 202.

[0086] In addition to being bonded with adhesive, the first elastic band 201, the first non-woven fabric 101 and the second non-woven fabric 102, as well as the second elastic band 202, the second non-woven fabric 102 and the third non-woven fabric 103 can also be bonded together by ultrasonic welding.

[0087] In one implementation scheme, such as Figure 1A As shown, the multiple first elastic bands 201 are evenly spaced. In another embodiment, the multiple first elastic bands 201 may also be non-evenly spaced (not shown in the figure).

[0088] In one implementation scheme, such as Figure 1A As shown, the multiple second elastic bands 202 are evenly spaced. In another embodiment, the multiple second elastic bands 202 may also be non-evenly spaced (not shown in the figure).

[0089] In an exemplary embodiment, the first elastic band 201 has an average density of 10 dtex to 940 dtex (e.g., 10 dtex, 50 dtex, 100 dtex, 150 dtex, 200 dtex, 250 dtex, 300 dtex, 350 dtex, 400 dtex, 440 dtex, 500 dtex, 600 dtex, 700 dtex, 800 dtex, 940 dtex), and the second elastic band 202 has an average density of 10 dtex to 940 dtex (e.g., 10 dtex, 50 dtex, 100 dtex, 150 dtex, 200 dtex, 250 dtex, 300 dtex, 350 dtex, 400 dtex, 440 dtex, 500 dtex, 600 dtex, 700 dtex, 800 dtex, 940 dtex).

[0090] In an exemplary embodiment, the first elastic band 201 has a tensile range of 100%-400% (e.g., 100%, 150%, 200%, 250%, 300%, 350%, 400%).

[0091] In an exemplary embodiment, the second elastic band 202 has a tensile range of 100%-400% (e.g., 100%, 150%, 200%, 250%, 300%, 350%, 400%).

[0092] In an exemplary embodiment, the elastic layer includes 10-130 (e.g., 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, 130) first elastic bands 201.

[0093] In an exemplary embodiment, the elastic layer includes 10-130 (e.g., 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, 130) second elastic bands 202.

[0094] In an exemplary embodiment, the first nonwoven fabric 101 and the second nonwoven fabric 102 are bonded together by a first adhesive portion, and the second nonwoven fabric 102 and the third nonwoven fabric 103 are bonded together by a second adhesive portion.

[0095] Example 2

[0096] Figure 2A A schematic diagram of the internal structure of an elastic layer for wearable hygiene products provided for an embodiment of the present invention; Figure 2B for Figure 2A The corresponding exploded 3D diagram.

[0097] like Figure 1A and Figure 1B As shown, the elastic layer for wearable hygiene products in Embodiment 2 includes: a first nonwoven fabric 101, a second nonwoven fabric 102, a third nonwoven fabric 103, multiple first elastic bands 201 and multiple second elastic bands 202.

[0098] Example 3

[0099] Figure 3A A schematic diagram of the internal structure of an elastic layer for wearable hygiene products provided for an embodiment of the present invention; Figure 3B for Figure 3A The corresponding exploded 3D diagram.

[0100] like Figure 3A and Figure 3B As shown, the elastic layer for wearable hygiene products in Embodiment 3 includes: a first nonwoven fabric 101, a second nonwoven fabric 102, a third nonwoven fabric 103, multiple first elastic bands 201 and multiple second elastic bands 202.

[0101] Example 4

[0102] Figure 4 A schematic diagram of the internal structure of an elastic layer for wearable hygiene products, provided for an embodiment of the present invention.

[0103] like Figure 4 As shown, the elastic layer for wearable hygiene products in Embodiment 4 includes: a first nonwoven fabric 101, a second nonwoven fabric 102, a third nonwoven fabric 103, multiple first elastic bands 201 and multiple second elastic bands 202.

[0104] The layered structures of the finished elastic layers in Examples 1, 2, 3, and 4 are the same, with the only difference being the order of the preparation methods. The difference will be described in detail in the following preparation method section.

[0105] Example 5

[0106] like Figure 5A As shown, the elastic layer for wearable hygiene products in Embodiment 5 includes: a first nonwoven fabric 101, a second nonwoven fabric 102, a third nonwoven fabric 103, a fourth nonwoven fabric 104, multiple first elastic bands 201, multiple second elastic bands 202, and multiple third elastic bands 203.

[0107] The first nonwoven fabric 101, the second nonwoven fabric 102, the third nonwoven fabric 103 and the fourth nonwoven fabric 104 are stacked in sequence.

[0108] Multiple first elastic bands 201 constitute a first group of elastic bands. The multiple first elastic bands 201 are disposed between the first nonwoven fabric 101 and the second nonwoven fabric 102, and the spacing between two adjacent elastic bands in the multiple first elastic bands 201 is 0.2 to 12 mm.

[0109] Multiple second elastic bands 202 constitute a second group of elastic bands. The multiple second elastic bands 202 are disposed between the second nonwoven fabric 102 and the third nonwoven fabric 103, and the spacing between two adjacent elastic bands in the multiple second elastic bands 202 is 0.2 to 12 mm.

[0110] Multiple third elastic bands 203 constitute a third group of elastic bands. The multiple third elastic bands 203 are disposed between the third nonwoven fabric 103 and the fourth nonwoven fabric 104, and the spacing between two adjacent elastic bands in the multiple third elastic bands 203 is 0.2 to 12 mm.

[0111] Among them, the projections of multiple first elastic bands 201, multiple second elastic bands 202 and multiple third elastic bands 203 in the vertical direction are staggered, so that the combined spacing D0 of adjacent elastic bands is 0.1 to 6 mm.

[0112] Example 6

[0113] like Figure 5B As shown, the elastic layer for wearable hygiene products in Example 6 includes: a first nonwoven fabric 101, a second nonwoven fabric 102, a third nonwoven fabric 103, a fourth nonwoven fabric 104, multiple first elastic bands 201, multiple second elastic bands 202, and multiple third elastic bands 203.

[0114] Example 7

[0115] like Figure 5C As shown, the elastic layer for wearable hygiene products in Embodiment 7 includes: a first nonwoven fabric 101, a second nonwoven fabric 102, a third nonwoven fabric 103, a fourth nonwoven fabric 104, multiple first elastic bands 201, multiple second elastic bands 202, and multiple third elastic bands 203.

[0116] Example 8

[0117] like Figure 5D As shown, the elastic layer for wearable hygiene products in Embodiment 8 includes: a first nonwoven fabric 101, a second nonwoven fabric 102, a third nonwoven fabric 103, a fourth nonwoven fabric 104, multiple first elastic bands 201, multiple second elastic bands 202, and multiple third elastic bands 203.

[0118] Example 9

[0119] like Figure 5EAs shown, the elastic layer for wearable hygiene products in Example 9 includes: a first nonwoven fabric 101, a second nonwoven fabric 102, a third nonwoven fabric 103, a fourth nonwoven fabric 104, multiple first elastic bands 201, multiple second elastic bands 202, and multiple third elastic bands 203.

[0120] Example 10

[0121] like Figure 5F As shown, the elastic layer for wearable hygiene products in Example 10 includes: a first nonwoven fabric 101, a second nonwoven fabric 102, a third nonwoven fabric 103, a fourth nonwoven fabric 104, multiple first elastic bands 201, multiple second elastic bands 202, and multiple third elastic bands 203.

[0122] Example 11

[0123] like Figure 5G As shown, the elastic layer for wearable hygiene products in Example 11 includes: a first nonwoven fabric 101, a second nonwoven fabric 102, a third nonwoven fabric 103, a fourth nonwoven fabric 104, multiple first elastic bands 201, multiple second elastic bands 202, and multiple third elastic bands 203.

[0124] Example 12

[0125] like Figure 5H As shown, the elastic layer for wearable hygiene products in Example 12 includes: a first nonwoven fabric 101, a second nonwoven fabric 102, a third nonwoven fabric 103, a fourth nonwoven fabric 104, multiple first elastic bands 201, multiple second elastic bands 202, and multiple third elastic bands 203.

[0126] The layered structures of Examples 5 to 12 are the same in the finished elastic layer, the only difference being the order of the preparation methods, which will be described in detail in the following preparation methods.

[0127] Example 13

[0128] like Figure 5I As shown, the elastic layer for wearable hygiene products in Example 13 includes: a first nonwoven fabric 101, a second nonwoven fabric 102, a third nonwoven fabric 103, a fourth nonwoven fabric 104, multiple first elastic bands 201, multiple second elastic bands 202, and multiple third elastic bands 203.

[0129] The first nonwoven fabric 101, the second nonwoven fabric 102, the third nonwoven fabric 103 and the fourth nonwoven fabric 104 are stacked in sequence.

[0130] Multiple first elastic bands 201 constitute a first group of elastic bands. The multiple first elastic bands 201 are disposed between the first nonwoven fabric 101 and the second nonwoven fabric 102, and the spacing between two adjacent elastic bands in the multiple first elastic bands 201 is 0.2 to 12 mm.

[0131] Multiple second elastic bands 202 constitute a second group of elastic bands. The multiple second elastic bands 202 are disposed between the second nonwoven fabric 102 and the third nonwoven fabric 103, and the spacing between two adjacent elastic bands in the multiple second elastic bands 202 is 0.2 to 12 mm.

[0132] Multiple third elastic bands 203 constitute a third group of elastic bands. The multiple third elastic bands 203 are disposed between the third nonwoven fabric 103 and the fourth nonwoven fabric 104, and the spacing between two adjacent elastic bands in the multiple third elastic bands 203 is 0.2 to 12 mm.

[0133] Among them, the projections of multiple first elastic bands 201, multiple second elastic bands 202 and multiple third elastic bands 203 in the vertical direction are staggered, so that the combined spacing D0 of adjacent elastic bands is 0.1 to 6 mm.

[0134] The difference between Example 13 and Example 5 is that the number of third elastic bands 203 in Example 13 is less than that in Example 5. This results in multiple combination spacings in Example 13, namely combination spacings D01 and D02. This example also allows for changes to the final combination spacing; that is, there can be more than one combination spacing within the same elastic layer.

[0135] Example 14

[0136] like Figure 6 As shown, the elastic layer for wearable hygiene products in Example 14 includes: a first nonwoven fabric 101, a second nonwoven fabric 102, a third nonwoven fabric 103, a fourth nonwoven fabric 104, a fifth nonwoven fabric 105, multiple first elastic bands 201, multiple second elastic bands 202, multiple third elastic bands 203, and multiple fourth elastic bands 204.

[0137] The first nonwoven fabric 101, the second nonwoven fabric 102, the third nonwoven fabric 103, the fourth nonwoven fabric 104 and the fifth nonwoven fabric 105 are stacked in sequence.

[0138] Multiple first elastic bands 201 constitute a first group of elastic bands. The multiple first elastic bands 201 are disposed between the first nonwoven fabric 101 and the second nonwoven fabric 102, and the spacing between two adjacent elastic bands in the multiple first elastic bands 201 is 0.2 to 12 mm.

[0139] Multiple second elastic bands 202 constitute a second group of elastic bands. The multiple second elastic bands 202 are disposed between the second nonwoven fabric 102 and the third nonwoven fabric 103, and the spacing between two adjacent elastic bands in the multiple second elastic bands 202 is 0.2 to 12 mm.

[0140] Multiple third elastic bands 203 constitute a third group of elastic bands. The multiple third elastic bands 203 are disposed between the third nonwoven fabric 103 and the fourth nonwoven fabric 104, and the spacing between two adjacent elastic bands in the multiple third elastic bands 203 is 0.2 to 12 mm.

[0141] Multiple fourth elastic bands 204 constitute a fourth group of elastic bands. The multiple fourth elastic bands 204 are disposed between the fourth nonwoven fabric 104 and the fifth nonwoven fabric 105, and the spacing between two adjacent elastic bands in the multiple fourth elastic bands 204 is 0.2 to 12 mm.

[0142] Among them, the projections of multiple first elastic bands 201, multiple second elastic bands 202, multiple third elastic bands 203 and multiple fourth elastic bands 204 are staggered in the vertical direction, so that the combined spacing D0 of adjacent elastic bands is 0.1 to 6 mm.

[0143] The material of the nonwoven fabric, the peel strength between adjacent nonwoven fabrics, the average density, stretching range and number of elastic bands in Examples 2 to 12 and Example 14 are similar to those in Example 1, and will not be repeated here.

[0144] In an exemplary embodiment, at least one of the (N-2) layers of nonwoven fabric in the N-layer nonwoven fabric is a discontinuous nonwoven fabric.

[0145] Figure 7A This is a schematic diagram of a discontinuous nonwoven fabric. Figure 7B This is a schematic diagram of a discontinuous nonwoven fabric. Figure 7A and Figure 7B They are all observed from top to bottom.

[0146] Example 15

[0147] In Examples 1 to 14, each layer of nonwoven fabric is a continuous layer. In Example 15, as... Figure 7A and Figure 7B As shown, the first nonwoven fabric 101 is a discontinuous layer.

[0148] When N is 3, one layer of nonwoven fabric can be discontinuous, which can be... Figure 1A , Figure 2A , Figure 3A and Figure 4 The first nonwoven fabric 101, the second nonwoven fabric 102, or the third nonwoven fabric 103 in the middle.

[0149] When N is 4, there can be one or two discontinuous layers of nonwoven fabric; that is, it can be... Figures 5A to 5I The first nonwoven fabric 101, the second nonwoven fabric 102, the third nonwoven fabric 103, and the fourth nonwoven fabric 104, or any one or any two of them.

[0150] When N is 5, there can be one, two, or three layers of nonwoven fabric that are discontinuous; that is, there can be... Figure 6 The first nonwoven fabric 101, the second nonwoven fabric 102, the third nonwoven fabric 103, the fourth nonwoven fabric 104, and the fifth nonwoven fabric 105 may be any one, any two, or any three layers.

[0151] Similarly, at least one of the (N-2) layers of nonwoven fabric in an N-layer nonwoven fabric can be a discontinuous nonwoven fabric.

[0152] The extension direction of the broken lines of the discontinuous nonwoven fabric is perpendicular to the extension direction of the elastic band. That is, the extension direction of multiple segments formed by the same layer of discontinuous nonwoven fabric is perpendicular to the extension direction of the elastic band.

[0153] The number and size of the multiple segments formed by discontinuous nonwoven fabric can vary, for example, Figure 7A and Figure 7B The first nonwoven fabric 101 in the process has different numbers and sizes of fragments after being broken.

[0154] The present invention also provides a method for preparing an elastic layer for wearable hygiene products. The preparation method is described below with reference to the accompanying drawings.

[0155] In an exemplary implementation, such as Figure 8 and Figure 9 As shown, a method for preparing an elastic layer for wearable hygiene products includes:

[0156] Step a1) Prepare N layers of nonwoven fabric, where N is an integer greater than or equal to 3.

[0157] Step b1) Form a group of elastic bands between any two adjacent layers of nonwoven fabric. Each group of elastic bands includes multiple elastic bands, and the spacing between two adjacent elastic bands in each group is 0.2 to 12 mm (e.g., 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1 mm, 1.1 mm, 1.2 mm, 1.3 mm, 1.4 mm, 1.5 mm, 1.6 mm, 1.7 mm, 1.8 mm, 1.9 mm, 2 mm, 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, 10 mm, 11 mm, 12 mm). Preferably, the spacing between two adjacent elastic bands in each group is 2 to 12 mm.

[0158] Step c1) Layer N layers of nonwoven fabric sequentially, with (N-1) groups of elastic bands arranged in an alternating vertical direction, such that the spacing between adjacent elastic bands is 0.1 to 6 mm (e.g., 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm, 3.5 mm, 4 mm, 4.5 mm, 5 mm, 5.5 mm, 6 mm). Preferably, the spacing is 1 to 6 mm.

[0159] In an exemplary implementation, such as Figure 8 As shown, prior to forming a set of elastic bands between any two adjacent layers of nonwoven fabric (i.e., step b1), the method further includes:

[0160] Step a2) Spray glue onto multiple rubber bands.

[0161] The elastic band can be bonded to its two adjacent non-woven fabric layers with glue, and each non-woven fabric layer is bonded to the adjacent non-woven fabric by glue sprayed on the elastic band.

[0162] In an exemplary implementation, such as Figure 9 As shown, prior to forming a set of elastic bands between any two adjacent layers of nonwoven fabric (i.e., step b1), the method further includes:

[0163] Step a3) Spray adhesive onto one of the surfaces of two adjacent nonwoven fabric layers that are in contact with each other in the N layers of nonwoven fabric.

[0164] The elastic band can be bonded to the two adjacent layers of nonwoven fabric with glue.

[0165] Taking three layers of nonwoven fabric and two sets of elastic bands as an example, there are four preparation methods.

[0166] The first method includes:

[0167] A three-layer nonwoven fabric is prepared, comprising a first nonwoven fabric 101, a second nonwoven fabric 102, and a third nonwoven fabric 103.

[0168] Multiple first elastic bands 201 are laid on the upper surface of the first nonwoven fabric 101, and the spacing D1 between two adjacent elastic bands 201 is 0.2 to 12 mm.

[0169] Multiple second elastic bands 202 are laid on the lower surface of the third nonwoven fabric 103, and the spacing D2 between two adjacent elastic bands in the multiple second elastic bands 202 is 0.2 to 12 mm.

[0170] The second nonwoven fabric 102 is layered on the side of the first nonwoven fabric 101 where the first elastic band 201 is laid (i.e., the upper surface of the first nonwoven fabric 101).

[0171] The third nonwoven fabric 103 is laid on one side of the second elastic band 202 and stacked on the second nonwoven fabric 102, so that the projections of multiple first elastic bands 201 and multiple second elastic bands 202 are staggered in the vertical direction, and the combined spacing D0 of adjacent first elastic bands 201 and second elastic bands 202 is 0.1 to 6 mm.

[0172] Thus, the product was prepared. Figure 1A The elastic layer shown is used in wearable hygiene products.

[0173] The second method includes:

[0174] A three-layer nonwoven fabric is prepared, comprising a first nonwoven fabric 101, a second nonwoven fabric 102, and a third nonwoven fabric 103.

[0175] Multiple first elastic bands 201 are laid on the lower surface of the second nonwoven fabric 102, and multiple second elastic bands 202 are laid on the upper surface of the second nonwoven fabric 102. The spacing D1 between two adjacent elastic bands in the multiple first elastic bands 201 is 0.2 to 12 mm, and the spacing D2 between two adjacent elastic bands in the multiple second elastic bands 202 is 0.2 to 12 mm. The projections of the multiple first elastic bands 201 and the multiple second elastic bands 202 in the vertical direction are staggered, and the combined spacing D0 between adjacent first elastic bands 201 and second elastic bands 202 is 0.1 to 6 mm.

[0176] The second nonwoven fabric 102 is layered on top of the first nonwoven fabric 101.

[0177] The third nonwoven fabric 103 is layered on the second nonwoven fabric 102.

[0178] Thus, the product was prepared. Figure 2A The elastic layer shown is used in wearable hygiene products.

[0179] The third method includes:

[0180] A three-layer nonwoven fabric is prepared, comprising a first nonwoven fabric 101, a second nonwoven fabric 102, and a third nonwoven fabric 103.

[0181] Multiple first elastic bands 201 are laid on the upper surface of the first nonwoven fabric 101, and the spacing D1 between two adjacent elastic bands 201 is 0.2 to 12 mm.

[0182] The second nonwoven fabric 102 is layered on top of the first nonwoven fabric 101.

[0183] Multiple second elastic bands 202 are laid on the upper surface of the second nonwoven fabric 102. The spacing D2 between two adjacent elastic bands 202 is 0.2 to 12 mm. The projections of multiple first elastic bands 201 and multiple second elastic bands 202 in the vertical direction are staggered. The combined spacing D0 between adjacent first elastic bands and second elastic bands is 0.1 to 6 mm.

[0184] The third nonwoven fabric 103 is layered on the second nonwoven fabric 102.

[0185] Thus, the product was prepared. Figure 3A The elastic layer shown is used in wearable hygiene products.

[0186] The fourth method includes:

[0187] A three-layer nonwoven fabric is prepared, comprising a first nonwoven fabric 101, a second nonwoven fabric 102, and a third nonwoven fabric 103.

[0188] Multiple first elastic bands 201 are laid on the lower surface of the second nonwoven fabric 102, and the spacing D1 between two adjacent elastic bands 201 is 0.2 to 12 mm.

[0189] Multiple second elastic bands 202 are laid on the lower surface of the third nonwoven fabric 103, and the spacing D2 between two adjacent elastic bands in the multiple second elastic bands 202 is 0.2 to 12 mm.

[0190] The second nonwoven fabric 102 is layered on the first nonwoven fabric 101, and the third nonwoven fabric 103 is layered on the second nonwoven fabric 102. The projections of multiple first elastic bands 201 and multiple second elastic bands 202 are arranged alternately in the vertical direction, and the combined spacing D0 between adjacent first elastic bands 201 and second elastic bands 202 is 0.1 to 6 mm.

[0191] Thus, the product was prepared. Figure 4 The elastic layer shown is used in wearable hygiene products.

[0192] Taking four layers of nonwoven fabric and three sets of elastic bands as an example, there are eight preparation methods.

[0193] The first method includes:

[0194] A four-layer nonwoven fabric is prepared, comprising a first nonwoven fabric 101, a second nonwoven fabric 102, a third nonwoven fabric 103, and a fourth nonwoven fabric 104.

[0195] Multiple first elastic bands 201 are laid on the upper surface of the first nonwoven fabric 101, and the spacing D1 between two adjacent elastic bands 201 is 0.2 to 12 mm.

[0196] The second nonwoven fabric 102 is layered on top of the first nonwoven fabric 101.

[0197] Multiple second elastic bands 202 are laid on the upper surface of the second nonwoven fabric 102, and the spacing D2 between two adjacent elastic bands in the multiple second elastic bands 202 is 0.2 to 12 mm.

[0198] The third nonwoven fabric 103 is layered on the second nonwoven fabric 102.

[0199] Multiple third elastic bands 203 are laid on the upper surface of the third nonwoven fabric 103, with the spacing D3 between two adjacent elastic bands 203 being 0.2 to 12 mm. The projections of multiple first elastic bands 201, multiple second elastic bands 202, and multiple third elastic bands 203 are arranged alternately in the vertical direction, with the combined spacing D0 between adjacent first elastic bands 201, second elastic bands 202, and third elastic bands 203 being 0.1 to 6 mm.

[0200] The fourth nonwoven fabric 104 is layered on top of the third nonwoven fabric 103.

[0201] Thus, the product was prepared. Figure 5A The elastic layer shown is used in wearable hygiene products.

[0202] The second method includes:

[0203] A four-layer nonwoven fabric is prepared, comprising a first nonwoven fabric 101, a second nonwoven fabric 102, a third nonwoven fabric 103, and a fourth nonwoven fabric 104.

[0204] Multiple first elastic bands 201 are laid on the upper surface of the first nonwoven fabric 101, and the spacing D1 between two adjacent elastic bands 201 is 0.2 to 12 mm.

[0205] The second nonwoven fabric 102 is layered on top of the first nonwoven fabric 101.

[0206] Multiple second elastic bands 202 are laid on the upper surface of the second nonwoven fabric 102, and the spacing D2 between two adjacent elastic bands in the multiple second elastic bands 202 is 0.2 to 12 mm.

[0207] The third nonwoven fabric 103 is layered on the second nonwoven fabric 102.

[0208] Multiple third elastic bands 203 are laid on the lower surface of the fourth nonwoven fabric 104, and the spacing D3 between two adjacent elastic bands 203 is 0.2 to 12 mm.

[0209] The fourth nonwoven fabric 104 is stacked on the third nonwoven fabric 103, and the projections of multiple first elastic bands 201, multiple second elastic bands 202 and multiple third elastic bands 203 are staggered in the vertical direction, and the combined spacing D0 of adjacent first elastic bands 201, second elastic bands 202 and third elastic bands 203 is 0.1 to 6 mm.

[0210] Thus, the product was prepared. Figure 5B The elastic layer shown is used in wearable hygiene products.

[0211] The third method includes:

[0212] A four-layer nonwoven fabric is prepared, comprising a first nonwoven fabric 101, a second nonwoven fabric 102, a third nonwoven fabric 103, and a fourth nonwoven fabric 104.

[0213] Multiple first elastic bands 201 are laid on the upper surface of the first nonwoven fabric 101, and the spacing D1 between two adjacent elastic bands 201 is 0.2 to 12 mm.

[0214] Multiple second elastic bands 202 are laid on the lower surface of the third nonwoven fabric 103, and multiple third elastic bands 203 are laid on the upper surface of the third nonwoven fabric 103. The spacing D2 between two adjacent elastic bands in the multiple second elastic bands 202 is 0.2 to 12 mm, and the spacing D3 between two adjacent elastic bands in the multiple third elastic bands 203 is 0.2 to 12 mm.

[0215] The second nonwoven fabric 102 is layered on top of the first nonwoven fabric 101.

[0216] The third nonwoven fabric 103 is layered on the second nonwoven fabric 102.

[0217] The fourth nonwoven fabric 104 is stacked on the third nonwoven fabric 103, and the projections of multiple first elastic bands 201, multiple second elastic bands 202 and multiple third elastic bands 203 are staggered in the vertical direction, and the combined spacing D0 of adjacent first elastic bands 201, second elastic bands 202 and third elastic bands 203 is 0.1 to 6 mm.

[0218] Thus, the product was prepared. Figure 5C The elastic layer shown is used in wearable hygiene products.

[0219] The fourth method includes:

[0220] A four-layer nonwoven fabric is prepared, comprising a first nonwoven fabric 101, a second nonwoven fabric 102, a third nonwoven fabric 103, and a fourth nonwoven fabric 104.

[0221] Multiple first elastic bands 201 are laid on the upper surface of the first nonwoven fabric 101, and the spacing D1 between two adjacent elastic bands 201 is 0.2 to 12 mm.

[0222] Multiple second elastic bands 202 are laid on the lower surface of the third nonwoven fabric 103, and the spacing D2 between two adjacent elastic bands in the multiple second elastic bands 202 is 0.2 to 12 mm.

[0223] Multiple third elastic bands 203 are laid on the lower surface of the fourth nonwoven fabric 104, and the spacing D3 between two adjacent elastic bands 203 is 0.2 to 12 mm.

[0224] The second nonwoven fabric 102 is layered on top of the first nonwoven fabric 101.

[0225] The third nonwoven fabric 103 is layered on the second nonwoven fabric 102.

[0226] The fourth nonwoven fabric 104 is stacked on the third nonwoven fabric 103, and the projections of multiple first elastic bands 201, multiple second elastic bands 202 and multiple third elastic bands 203 are staggered in the vertical direction, and the combined spacing D0 of adjacent first elastic bands 201, second elastic bands 202 and third elastic bands 203 is 0.1 to 6 mm.

[0227] Thus, the product was prepared. Figure 5D The elastic layer shown is used in wearable hygiene products.

[0228] The fifth method includes:

[0229] A four-layer nonwoven fabric is prepared, comprising a first nonwoven fabric 101, a second nonwoven fabric 102, a third nonwoven fabric 103, and a fourth nonwoven fabric 104.

[0230] Multiple first elastic bands 201 are laid on the lower surface of the second nonwoven fabric 102, and multiple second elastic bands 202 are laid on the upper surface of the second nonwoven fabric 102. The spacing D1 between two adjacent elastic bands in the multiple first elastic bands 201 is 0.2 to 12 mm, and the spacing D2 between two adjacent elastic bands in the multiple second elastic bands 202 is 0.2 to 12 mm.

[0231] Multiple third elastic bands 203 are laid on the upper surface of the third nonwoven fabric 103, and the spacing D3 between two adjacent elastic bands 203 is 0.2 to 12 mm.

[0232] The second nonwoven fabric 102 is layered on top of the first nonwoven fabric 101.

[0233] The third nonwoven fabric 103 is layered on the second nonwoven fabric 102.

[0234] The fourth nonwoven fabric 104 is stacked on the third nonwoven fabric 103, and the projections of multiple first elastic bands 201, multiple second elastic bands 202 and multiple third elastic bands 203 are staggered in the vertical direction, and the combined spacing D0 of adjacent first elastic bands 201, second elastic bands 202 and third elastic bands 203 is 0.1 to 6 mm.

[0235] Thus, the product was prepared. Figure 5E The elastic layer shown is used in wearable hygiene products.

[0236] The sixth method includes:

[0237] A four-layer nonwoven fabric is prepared, comprising a first nonwoven fabric 101, a second nonwoven fabric 102, a third nonwoven fabric 103, and a fourth nonwoven fabric 104.

[0238] Multiple first elastic bands 201 are laid on the lower surface of the second nonwoven fabric 102, and multiple second elastic bands 202 are laid on the upper surface of the second nonwoven fabric 102. The spacing D1 between two adjacent elastic bands in the multiple first elastic bands 201 is 0.2 to 12 mm, and the spacing D2 between two adjacent elastic bands in the multiple second elastic bands 202 is 0.2 to 12 mm.

[0239] Multiple third elastic bands 203 are laid on the lower surface of the fourth nonwoven fabric 104, and the spacing D3 between two adjacent elastic bands 203 is 0.2 to 12 mm.

[0240] The second nonwoven fabric 102 is layered on top of the first nonwoven fabric 101.

[0241] The third nonwoven fabric 103 is layered on the second nonwoven fabric 102.

[0242] The fourth nonwoven fabric 104 is stacked on the third nonwoven fabric 103, and the projections of multiple first elastic bands 201, multiple second elastic bands 202 and multiple third elastic bands 203 are staggered in the vertical direction, and the combined spacing D0 of adjacent first elastic bands 201, second elastic bands 202 and third elastic bands 203 is 0.1 to 6 mm.

[0243] Thus, the product was prepared. Figure 5F The elastic layer shown is used in wearable hygiene products.

[0244] The seventh method includes:

[0245] A four-layer nonwoven fabric is prepared, comprising a first nonwoven fabric 101, a second nonwoven fabric 102, a third nonwoven fabric 103, and a fourth nonwoven fabric 104.

[0246] Multiple first elastic bands 201 are laid on the lower surface of the second nonwoven fabric 102, and the spacing D1 between two adjacent elastic bands 201 is 0.2 to 12 mm.

[0247] Multiple second elastic bands 202 are laid on the lower surface of the third nonwoven fabric 103, and multiple third elastic bands 203 are laid on the upper surface of the third nonwoven fabric 103. The spacing D2 between two adjacent elastic bands in the multiple second elastic bands 202 is 0.2 to 12 mm, and the spacing D3 between two adjacent elastic bands in the multiple third elastic bands 203 is 0.2 to 12 mm.

[0248] The second nonwoven fabric 102 is layered on top of the first nonwoven fabric 101.

[0249] The third nonwoven fabric 103 is layered on the second nonwoven fabric 102.

[0250] The fourth nonwoven fabric 104 is stacked on the third nonwoven fabric 103, and the projections of multiple first elastic bands 201, multiple second elastic bands 202 and multiple third elastic bands 203 are staggered in the vertical direction, and the combined spacing D0 of adjacent first elastic bands 201, second elastic bands 202 and third elastic bands 203 is 0.1 to 6 mm.

[0251] Thus, the product was prepared. Figure 5G The elastic layer shown is used in wearable hygiene products.

[0252] The eighth method includes:

[0253] A four-layer nonwoven fabric is prepared, comprising a first nonwoven fabric 101, a second nonwoven fabric 102, a third nonwoven fabric 103, and a fourth nonwoven fabric 104.

[0254] Multiple first elastic bands 201 are laid on the lower surface of the second nonwoven fabric 102, and the spacing D1 between two adjacent elastic bands 201 is 0.2 to 12 mm.

[0255] Multiple second elastic bands 202 are laid on the lower surface of the third nonwoven fabric 103, and the spacing D2 between two adjacent elastic bands in the multiple second elastic bands 202 is 0.2 to 12 mm.

[0256] Multiple third elastic bands 203 are laid on the lower surface of the fourth nonwoven fabric 104, and the spacing D3 between two adjacent elastic bands 203 is 0.2 to 12 mm.

[0257] The second nonwoven fabric 102 is layered on top of the first nonwoven fabric 101.

[0258] The third nonwoven fabric 103 is layered on the second nonwoven fabric 102.

[0259] The fourth nonwoven fabric 104 is stacked on the third nonwoven fabric 103, and the projections of multiple first elastic bands 201, multiple second elastic bands 202 and multiple third elastic bands 203 are staggered in the vertical direction, and the combined spacing D0 of adjacent first elastic bands 201, second elastic bands 202 and third elastic bands 203 is 0.1 to 6 mm.

[0260] Thus, the product was prepared. Figure 5H The elastic layer shown is used in wearable hygiene products.

[0261] Similarly, the elastic layer of five layers of nonwoven fabric and four sets of elastic bands used in wearable hygiene products can also be prepared in various ways. Here, we will only introduce one of them, and the specific method is as follows:

[0262] A five-layer nonwoven fabric is prepared, comprising a first nonwoven fabric 101, a second nonwoven fabric 102, a third nonwoven fabric 103, a fourth nonwoven fabric 104, and a fifth nonwoven fabric 105.

[0263] Multiple first elastic bands 201 are laid on the upper surface of the first nonwoven fabric 101, and the spacing D1 between two adjacent elastic bands 201 is 0.2 to 12 mm.

[0264] The second nonwoven fabric 102 is layered on top of the first nonwoven fabric 101.

[0265] Multiple second elastic bands 202 are laid on the upper surface of the second nonwoven fabric 102, and the spacing D2 between two adjacent elastic bands in the multiple second elastic bands 202 is 0.2 to 12 mm.

[0266] The third nonwoven fabric 103 is layered on the second nonwoven fabric 102.

[0267] Multiple third elastic bands 203 are laid on the upper surface of the third nonwoven fabric 103, and the spacing D3 between two adjacent elastic bands 203 is 0.2 to 12 mm.

[0268] The fourth nonwoven fabric 104 is layered on top of the third nonwoven fabric 103.

[0269] Multiple fourth elastic bands 204 are laid on the upper surface of the fourth nonwoven fabric 104, with the spacing D4 between two adjacent elastic bands 204 being 0.2 to 12 mm. The projections of multiple first elastic bands 201, multiple second elastic bands 202, multiple third elastic bands 203, and multiple fourth elastic bands 204 are arranged alternately in the vertical direction, and the combined spacing D0 between adjacent first elastic bands 201, second elastic bands 202, third elastic bands 203, and fourth elastic bands 204 is 0.1 to 6 mm.

[0270] The fifth nonwoven fabric 105 is layered on top of the fourth nonwoven fabric 104.

[0271] Thus, the product was prepared. Figure 6 The elastic layer shown is used in wearable hygiene products.

[0272] Other methods for preparing the elastic layer of wearable hygiene products consisting of five layers of nonwoven fabric and four sets of elastic bands can be found in the preparation method of the elastic layer of wearable hygiene products consisting of four layers of nonwoven fabric and three sets of elastic bands, which will not be described in detail here.

[0273] Similarly, implementation schemes containing more layers of nonwoven fabric can be prepared.

[0274] An embodiment of the present invention also provides a wearable hygiene product, which includes the above-described elastic layer for wearable hygiene products.

[0275] For ease of interpretation and precise definition of the appended claims, the terms “upper,” “lower,” “inner,” “outer,” “above,” “below,” “above,” “below,” “upward,” “downward,” “front,” “back,” “behind,” “inner side,” “outer side,” “inward,” “outer,” “internal,” “external,” “inner,” “external,” “forward,” and “backward” are used to describe the features of the exemplary embodiments with reference to the positions of these features shown in the accompanying drawings.

[0276] The foregoing description of specific exemplary embodiments of the invention is for illustrative and descriptive purposes. It is not intended to be exhaustive, nor to limit the invention to the precise forms disclosed; clearly, many changes and variations are possible in accordance with the foregoing teachings. The exemplary embodiments were chosen and described to explain the specific principles of the invention and its practical application, thereby enabling others skilled in the art to implement and utilize various exemplary embodiments of the invention, as well as their different alternatives and modifications. The scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An elastic layer for wearable hygiene products, characterized in that, include: N layers of nonwoven fabric stacked sequentially, where N is an integer greater than 3; and (N-1) groups of elastic bands, each group of (N-1) elastic bands contains multiple elastic bands; Among them, a set of elastic bands is set between two adjacent layers of non-woven fabric, and the spacing between two adjacent elastic bands in each set is 0.2 to 12 mm. The projections of the two adjacent sets of elastic bands in the vertical direction are staggered, so that the combined spacing of adjacent elastic bands is 0.1 to 6 mm.

2. The elastic layer for wearable hygiene products according to claim 1, characterized in that, include: The first nonwoven fabric, the second nonwoven fabric, the third nonwoven fabric, and the fourth nonwoven fabric are stacked in sequence; Multiple first elastic bands constitute a first group of elastic bands. The multiple first elastic bands are disposed between the first nonwoven fabric and the second nonwoven fabric, and the spacing between two adjacent elastic bands in the multiple first elastic bands is 0.2 to 12 mm. Multiple second elastic bands constitute a second group of elastic bands. The multiple second elastic bands are disposed between the second nonwoven fabric and the third nonwoven fabric, and the spacing between two adjacent elastic bands in the multiple second elastic bands is 0.2 to 12 mm. as well as Multiple third elastic bands constitute a third group of elastic bands. The multiple third elastic bands are arranged between the third nonwoven fabric and the fourth nonwoven fabric, and the spacing between two adjacent elastic bands in the multiple third elastic bands is 0.2 to 12 mm. The projections of multiple first elastic bands, multiple second elastic bands, and multiple third elastic bands in the vertical direction are staggered, so that the combined spacing between adjacent elastic bands is 0.1 to 6 mm.

3. The elastic layer for wearable hygiene products according to claim 1, characterized in that, include: The first nonwoven fabric, the second nonwoven fabric, the third nonwoven fabric, the fourth nonwoven fabric, and the fifth nonwoven fabric are stacked in sequence; Multiple first elastic bands constitute a first group of elastic bands. The multiple first elastic bands are disposed between the first nonwoven fabric and the second nonwoven fabric, and the spacing between two adjacent elastic bands in the multiple first elastic bands is 0.2 to 12 mm. as well as Multiple second elastic bands constitute a second group of elastic bands. The multiple second elastic bands are disposed between the second nonwoven fabric and the third nonwoven fabric, and the spacing between two adjacent elastic bands in the multiple second elastic bands is 0.2 to 12 mm. Multiple third elastic bands constitute a third group of elastic bands. The multiple third elastic bands are arranged between the third nonwoven fabric and the fourth nonwoven fabric, and the spacing between two adjacent elastic bands in the multiple third elastic bands is 0.2 to 12 mm. Multiple fourth elastic bands constitute a fourth group of elastic bands. The multiple fourth elastic bands are arranged between the fourth nonwoven fabric and the fifth nonwoven fabric, and the spacing between two adjacent elastic bands in the multiple fourth elastic bands is 0.2 to 12 mm. The projections of multiple first elastic bands, multiple second elastic bands, multiple third elastic bands, and multiple fourth elastic bands are staggered in the vertical direction, so that the combined spacing between adjacent elastic bands is 0.1 to 6 mm.

4. The elastic layer for wearable hygiene products according to claim 2, characterized in that, Multiple first elastic bands are distributed at equal intervals, multiple second elastic bands are distributed at equal intervals, and multiple third elastic bands are distributed at equal intervals.

5. The elastic layer for wearable hygiene products according to claim 3, characterized in that, Multiple first elastic bands are distributed at equal intervals, multiple second elastic bands are distributed at equal intervals, multiple third elastic bands are distributed at equal intervals, and multiple fourth elastic bands are distributed at equal intervals.

6. The elastic layer for wearable hygiene products according to claim 1, characterized in that, The elastic band has an average density of 10 dtex to 440 dtex.

7. The elastic layer for wearable hygiene products according to claim 1, characterized in that, At least one of the (N-2) layers of the N-layer nonwoven fabric is a discontinuous nonwoven fabric.

8. A method for preparing an elastic layer for wearable hygiene products, characterized in that, include: Prepare N layers of nonwoven fabric, where N is an integer greater than 3; A set of elastic bands is formed between any two adjacent layers of nonwoven fabric. Each set of elastic bands includes multiple elastic bands, and the spacing between two adjacent elastic bands in each set is 0.2 to 12 mm. N layers of nonwoven fabric are stacked in sequence, and the projections of (N-1) groups of elastic bands in the vertical direction are staggered, so that the spacing between adjacent elastic bands is 0.1 to 6 mm.

9. The method for preparing an elastic layer for wearable hygiene products according to claim 8, characterized in that, Before forming a set of elastic bands between any two adjacent layers of nonwoven fabric, the method further includes: Spray glue onto multiple rubber bands; The elastic band can be bonded to its two adjacent non-woven fabric layers with glue, and each non-woven fabric layer is bonded to the adjacent non-woven fabric by glue sprayed on the elastic band.

10. The method for preparing an elastic layer for wearable hygiene products according to claim 8, characterized in that, Before forming a set of elastic bands between any two adjacent layers of nonwoven fabric, the method further includes: Apply adhesive to one of the surfaces of two adjacent nonwoven fabric layers that come into contact with each other; The elastic band can be bonded to the two adjacent layers of nonwoven fabric with glue.

11. The method for preparing an elastic layer for wearable hygiene products according to claim 8, characterized in that, include: A four-layer nonwoven fabric is prepared, comprising a first nonwoven fabric, a second nonwoven fabric, a third nonwoven fabric, and a fourth nonwoven fabric. Multiple first elastic bands are laid on the upper surface of the first nonwoven fabric, and the spacing between two adjacent elastic bands is 0.2 to 12 mm. Multiple second elastic bands are laid on the lower surface of the third nonwoven fabric, and multiple third elastic bands are laid on the upper surface of the third nonwoven fabric. The spacing between two adjacent elastic bands in the multiple second elastic bands is 0.2 to 12 mm, and the spacing between two adjacent elastic bands in the multiple third elastic bands is 0.2 to 12 mm. The second nonwoven fabric is layered on top of the first nonwoven fabric; The side of the third nonwoven fabric that has the second elastic band laid on it is layered on the second nonwoven fabric; The fourth nonwoven fabric is stacked on the third nonwoven fabric, and the projections of multiple first elastic bands, multiple second elastic bands and multiple third elastic bands are staggered in the vertical direction, with the spacing between adjacent first elastic bands, second elastic bands and third elastic bands being 0.1 to 6 mm.

12. The method for preparing an elastic layer for wearable hygiene products according to claim 8, characterized in that, include: A four-layer nonwoven fabric is prepared, comprising a first nonwoven fabric, a second nonwoven fabric, a third nonwoven fabric, and a fourth nonwoven fabric. Multiple first elastic bands are laid on the lower surface of the second nonwoven fabric, multiple second elastic bands are laid on the upper surface of the second nonwoven fabric, multiple third elastic bands are laid on the lower surface of the third nonwoven fabric, and multiple fourth elastic bands are laid on the upper surface of the fourth nonwoven fabric. The spacing between two adjacent elastic bands in the multiple first elastic bands is 0.2 to 12 mm, the spacing between two adjacent elastic bands in the multiple second elastic bands is 0.2 to 12 mm, and the spacing between two adjacent elastic bands in the multiple third elastic bands is 0.2 to 12 mm. The projections of the multiple first elastic bands, multiple second elastic bands, and multiple third elastic bands in the vertical direction are staggered, and the combined spacing between adjacent first elastic bands, second elastic bands, and third elastic bands is 0.1 to 6 mm. The second nonwoven fabric is layered on top of the first nonwoven fabric; The third nonwoven fabric is layered on top of the second nonwoven fabric; The fourth nonwoven fabric is layered on top of the third nonwoven fabric.

13. The method for preparing an elastic layer for wearable hygiene products according to claim 8, characterized in that, include: A four-layer nonwoven fabric is prepared, comprising a first nonwoven fabric, a second nonwoven fabric, a third nonwoven fabric, and a fourth nonwoven fabric. Multiple first elastic bands are laid on the upper surface of the first nonwoven fabric, and the spacing between two adjacent elastic bands is 0.2 to 12 mm. The second nonwoven fabric is layered on top of the first nonwoven fabric; Multiple second elastic bands are laid on the upper surface of the second nonwoven fabric, and the spacing between two adjacent elastic bands is 0.2 to 12 mm. The third nonwoven fabric is layered on top of the second nonwoven fabric; Multiple third elastic bands are laid on the upper surface of the third nonwoven fabric. The spacing between two adjacent elastic bands is 0.2 to 12 mm. The projections of multiple first elastic bands, multiple second elastic bands and multiple third elastic bands in the vertical direction are staggered. The combined spacing of adjacent first elastic bands, second elastic bands and third elastic bands is 0.1 to 6 mm. The fourth nonwoven fabric is layered on top of the third nonwoven fabric.

14. The method for preparing an elastic layer for wearable hygiene products according to claim 8, characterized in that, include: A five-layer nonwoven fabric is prepared, comprising a first nonwoven fabric, a second nonwoven fabric, a third nonwoven fabric, a fourth nonwoven fabric, and a fifth nonwoven fabric. Multiple first elastic bands are laid on the upper surface of the first nonwoven fabric, and the spacing between two adjacent elastic bands is 0.2 to 12 mm. The second nonwoven fabric is layered on top of the first nonwoven fabric; Multiple second elastic bands are laid on the upper surface of the second nonwoven fabric, and the spacing between two adjacent elastic bands is 0.2 to 12 mm. The third nonwoven fabric is layered on top of the second nonwoven fabric; Multiple third elastic bands are laid on the upper surface of the third nonwoven fabric, and the spacing between two adjacent elastic bands is 0.2 to 12 mm. The fourth nonwoven fabric is layered on top of the third nonwoven fabric; Multiple fourth elastic bands are laid on the upper surface of the fourth nonwoven fabric. The spacing between two adjacent fourth elastic bands is 0.2 to 12 mm. The projections of multiple first elastic bands, multiple second elastic bands, multiple third elastic bands and multiple fourth elastic bands in the vertical direction are staggered. The combined spacing of adjacent first elastic bands, second elastic bands, third elastic bands and fourth elastic bands is 0.1 to 6 mm. The fifth nonwoven fabric is layered on top of the fourth nonwoven fabric.

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