Elastic layer for a wearable hygiene article and method of making the same

Abstract

The present application relates to a kind of elastic layer for wearable sanitary products and its preparation method, and the elastic layer for wearable sanitary products includes: first non-woven fabric, second non-woven fabric and third non-woven fabric are sequentially stacked;Multiple first elastic, which is arranged between first non-woven fabric and second non-woven fabric, and the pitch of adjacent two first elastic is 0.2 to 12 mm;And multiple second elastic, which is arranged between second non-woven fabric and third non-woven fabric, and the pitch of adjacent two second elastic is 0.2 to 12 mm;Wherein, the projection of multiple first elastic and multiple second elastic in up-down direction is alternately arranged, so that the combined pitch of adjacent first elastic and second elastic is 0.1 to 6 mm.The present application is alternately arranged by the projection of multiple first elastic and multiple second elastic in up-down direction, so that the elastic layer made at the same time when meeting smaller pitch, reduce the precision requirement to spraying device, thereby reduce the cost and difficulty of spraying in production process.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of health care, in particular to an elastic layer for a wearable sanitary product and a preparation method thereof. BACKGROUND

[0002] The waist portion of the wearable sanitary product is provided with an elastic layer to provide elasticity, so that the diaper / trainer is suitable for users with different waist circumferences.

[0003] The existing elastic layer generally includes two non-woven fabrics, and a plurality of rubber bands are added between the two non-woven fabrics. In order to ensure the elastic effect, manufacturers will choose to minimize the spacing between the rubber bands as much as possible. However, when manufacturing the elastic layer, it is usually necessary to spray glue on each rubber band. The specific operation mode is as follows: a plurality of rubber bands are placed in the gap of a special spraying device, that is, one rubber band is placed in one gap, and then the spraying gun sprays the rubber band located in the gap. This mode has the following defects:

[0004] The smaller the spacing between the rubber bands, the higher the precision requirement of the gap of the spraying device. It is difficult for a general spraying device to meet this precision requirement, which increases the cost and difficulty of spraying.

[0005] The information disclosed in the background section of this application is only intended to increase the understanding of the overall background of the application and should not be considered as acknowledging or implying in any form that this information constitutes prior art known to those of ordinary skill in the art. SUMMARY

[0006] The purpose of the present application is to provide an elastic layer for a wearable sanitary product and a preparation method thereof, which arranges the projections of a plurality of first rubber bands and a plurality of second rubber bands in the up-down direction alternately, so that the elastic layer manufactured thereby meets the smaller spacing requirement while reducing the precision requirement of the spraying device, thereby reducing the cost and difficulty of spraying in the manufacturing process.

[0007] According to a first aspect of the present application, an elastic layer for a wearable sanitary product is provided, comprising: a first non-woven fabric, a second non-woven fabric and a third non-woven fabric stacked in sequence; a plurality of first rubber bands arranged between the first non-woven fabric and the second non-woven fabric, and the spacing between any two adjacent rubber bands in the plurality of first rubber bands is 0.2 to 12 mm; and a plurality of second rubber bands arranged between the second non-woven fabric and the third non-woven fabric, and the spacing between any two adjacent rubber bands in the plurality of second rubber bands is 0.2 to 12 mm; wherein the projections of the plurality of first rubber bands and the plurality of second rubber bands in the up-down direction are arranged alternately, so that the combined spacing of the adjacent first rubber band and the second rubber band is 0.1 to 6 mm.

[0008] Preferably, the plurality of first rubber bands are distributed at equal intervals, and the plurality of second rubber bands are distributed at equal intervals.

[0009] Preferably, the first rubber thread has an average dtex of 10 dtex-940 dtex, and the second rubber thread has an average dtex of 10 dtex-940 dtex.

[0010] Preferably, the first rubber thread has a stretch range of 100%-400%, and the second rubber thread has a stretch range of 100%-400%.

[0011] Preferably, the first non-woven fabric and the second non-woven fabric are bonded together by a first bonding part, and the second non-woven fabric and the third non-woven fabric are bonded together by a second bonding part.

[0012] According to a second aspect of the present application, a method for preparing an elastic layer for a wearable sanitary product is provided, comprising: preparing a first non-woven fabric, a second non-woven fabric, and a third non-woven fabric; laying a plurality of first rubber threads on the first non-woven fabric, the distance between two adjacent rubber threads in the plurality of first rubber threads being 0.2-12 mm; laying a plurality of second rubber threads on the third non-woven fabric, the distance between two adjacent rubber threads in the plurality of second rubber threads being 0.2-12 mm; laminating the second non-woven fabric on the side of the first non-woven fabric on which the first rubber threads are laid; laminating the side of the third non-woven fabric on which the second rubber threads are laid on the second non-woven fabric, and making the projections of the plurality of first rubber threads and the plurality of second rubber threads in the up-down direction alternately arranged, the combined distance between adjacent first rubber threads and second rubber threads being 0.1-6 mm.

[0013] Before laying the plurality of first rubber threads on the first non-woven fabric, the method further comprises: spraying glue on the first rubber threads; wherein the first rubber threads can be bonded to the first non-woven fabric by the glue, and the second non-woven fabric is bonded to the first non-woven fabric by the glue sprayed on the first rubber threads.

[0014] Preferably, before laying the plurality of second rubber threads on the third non-woven fabric, the method further comprises: spraying glue on the second rubber threads; wherein the second rubber threads can be bonded to the third non-woven fabric by the glue, and the second non-woven fabric is bonded to the third non-woven fabric by the glue sprayed on the second rubber threads.

[0015] According to a third aspect of the present application, a method for preparing an elastic layer for a wearable sanitary product is provided, comprising: preparing a first nonwoven fabric, a second nonwoven fabric and a third nonwoven fabric; laying a plurality of first elastics on a first side of the second nonwoven fabric and a plurality of second elastics on a second side of the second nonwoven fabric, the distance between two adjacent elastics in the plurality of first elastics being 0.2 to 12 mm, the distance between two adjacent elastics in the plurality of second elastics being 0.2 to 12 mm, the projections of the plurality of first elastics and the plurality of second elastics in the up-down direction being arranged alternately, the combined distance between adjacent first and second elastics being 0.1 to 6 mm; laminating the second nonwoven fabric on the first nonwoven fabric; and laminating the third nonwoven fabric on the second nonwoven fabric.

[0016] Preferably, before laying the plurality of first elastics on the first side of the second nonwoven fabric, the method further comprises: spraying glue on the first elastics; wherein the first elastics can be bonded to the first side of the second nonwoven fabric by the glue, and the second nonwoven fabric is bonded to the first nonwoven fabric by the glue sprayed on the first elastics.

[0017] Preferably, before laying the plurality of second elastics on the second side of the second nonwoven fabric, the method further comprises: spraying glue on the second elastics; wherein the second elastics can be bonded to the second side of the second nonwoven fabric by the glue, and the second nonwoven fabric is bonded to the third nonwoven fabric by the glue sprayed on the second elastics.

[0018] According to a fourth aspect of the present application, a method for preparing an elastic layer for a wearable sanitary product is provided, comprising: preparing a first nonwoven fabric, a second nonwoven fabric and a third nonwoven fabric; laying a plurality of first elastics on the first nonwoven fabric, the distance between two adjacent elastics in the plurality of first elastics being 0.2 to 12 mm; laminating the second nonwoven fabric on the first nonwoven fabric; laying a plurality of second elastics on the second nonwoven fabric, the distance between two adjacent elastics in the plurality of second elastics being 0.2 to 12 mm, and the projections of the plurality of first elastics and the plurality of second elastics in the up-down direction being arranged alternately, the combined distance between adjacent first and second elastics being 0.1 to 6 mm; and laminating the third nonwoven fabric on the second nonwoven fabric.

[0019] Preferably, before laying the plurality of first elastics on the first nonwoven fabric, the method further comprises: spraying glue on the first elastics; wherein the first elastics can be bonded to the first nonwoven fabric by the glue, and the second nonwoven fabric is bonded to the first nonwoven fabric by the glue sprayed on the first elastics.

[0020] Preferably, before laying the plurality of second elastics on the second nonwoven fabric, the method further comprises: spraying glue on the second elastics; wherein the second elastics can be bonded to the second nonwoven fabric by the glue, and the third nonwoven fabric is bonded to the second nonwoven fabric by the glue sprayed on the second elastics.

[0021] The elastic layer for wearable hygiene products of the present invention uses multiple first elastic bands and multiple second elastic bands arranged alternately 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.

[0022] 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

[0023] Figure 1 A schematic diagram of the internal structure of an elastic layer for wearable hygiene products provided for an embodiment of the present invention;

[0024] Figure 2 for Figure 1 Corresponding exploded view;

[0025] Figure 3 A schematic diagram of the internal structure of a second elastic layer for wearable hygiene products provided for an embodiment of the present invention;

[0026] Figure 4 for Figure 3 The corresponding exploded view;

[0027] Figure 5 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;

[0028] Figure 6 for Figure 5 The corresponding exploded view;

[0029] Figure 7 A schematic flowchart of a method for preparing an elastic layer for wearable hygiene products according to an embodiment of the present invention;

[0030] Figure 8 A schematic flowchart of a second method for preparing an elastic layer for wearable hygiene products, provided for an embodiment of the present invention;

[0031] Figure 9 A schematic flowchart illustrating a third method for preparing an elastic layer for wearable hygiene products, provided as an embodiment of the present invention.

[0032] Explanation of reference numerals in the attached figures:

[0033] 100: First nonwoven fabric; 200: Second nonwoven fabric

[0034] 300: Third nonwoven fabric; 400: First elastic band

[0035] 500: Second elastic band.

[0036] 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.

[0037] Throughout these figures, the same reference numerals denote the same or equivalent parts of the invention. Detailed Implementation

[0038] 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.

[0039] 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.

[0040] 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.

[0041] The following is combined Figures 1 to 9 An elastic layer for wearable hygiene products according to an embodiment of the present invention will be described.

[0042] Figure 1 A schematic diagram of the internal structure of an elastic layer for wearable hygiene products provided for an embodiment of the present invention; Figure 2 for Figure 1 The corresponding exploded 3D diagram.

[0043] like Figure 1 and Figure 2 As shown, the elastic layer for wearable hygiene products according to an embodiment of the present invention includes: a first nonwoven fabric 100, a second nonwoven fabric 200, a third nonwoven fabric 300, a plurality of first elastic bands 400 and a plurality of second elastic bands 500 stacked sequentially.

[0044] A plurality of first elastic bands 400 are disposed between the first nonwoven fabric 100 and the second nonwoven fabric 200, and the spacing D1 between two adjacent elastic bands among the plurality of first elastic bands 400 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 two adjacent elastic bands among the plurality of first elastic bands 400 is 2 to 12 mm.

[0045] A plurality of second elastic bands 500 are disposed between the second nonwoven fabric 200 and the third nonwoven fabric 300, and the spacing D2 between two adjacent elastic bands among the plurality of second elastic bands 500 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 two adjacent elastic bands among the plurality of second elastic bands 500 is 2 to 12 mm.

[0046] The projections of multiple first elastic bands 400 and multiple second elastic bands 500 in the vertical direction are alternately arranged, such that the combined spacing D3 between adjacent first elastic bands 400 and second elastic bands 500 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 D3 between adjacent first elastic bands 400 and second elastic bands 500 is 1 to 6 mm.

[0047] The elastic layer for wearable hygiene products according to the embodiments of the present invention is made by alternating the projections of multiple first elastic bands 400 and multiple second elastic bands 500 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.

[0048] 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.

[0049] When adopting the embodiment of the present invention, when the spacing between adjacent first and second elastic bands is also 3mm (i.e., D3 is 3mm), since the projections of multiple first and second elastic bands in the vertical direction are alternately arranged, it is only necessary for the spacing between two adjacent elastic bands in the multiple first elastic bands 400 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 500 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.

[0050] In an exemplary embodiment, the first nonwoven fabric 100, the second nonwoven fabric 200, and the third nonwoven fabric 300 may be selected from spunlace fabric, spunbond fabric, or spunmel fabric.

[0051] When the diaper is worn, the first nonwoven fabric 100, the second nonwoven fabric 200, the third nonwoven fabric 300, the multiple first elastic bands 400 and the multiple second elastic bands 500 of the elastic layer of the wearable hygiene product extend along the circumference of the waist of the human body.

[0052] It should be noted that in this invention Figures 1 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 1 to 6 The diagram illustrates the gaps between the layers, but in the actual product, there are no gaps between the first nonwoven fabric 100, the second nonwoven fabric 200, and the third nonwoven fabric 300; they are bonded together.

[0053] In an exemplary embodiment, the peel strength between the first nonwoven fabric 100 and the second nonwoven fabric 200 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).

[0054] In an exemplary embodiment, the peel strength between the second nonwoven fabric 200 and the third nonwoven fabric 300 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).

[0055] In an exemplary embodiment, adhesive is sprayed onto the first elastic band 400. The first nonwoven fabric 100 is bonded to the second nonwoven fabric 200 by the adhesive sprayed onto the first elastic band 400.

[0056] In an exemplary embodiment, adhesive is sprayed onto the second elastic band 500. The second nonwoven fabric 200 is bonded to the third nonwoven fabric 300 by the adhesive sprayed onto the second elastic band 500.

[0057] In addition to being bonded with adhesive, the first elastic band 400, the first non-woven fabric 100 and the second non-woven fabric 200, as well as the second elastic band 500, the second non-woven fabric 200 and the third non-woven fabric 300 can also be bonded together by ultrasonic welding.

[0058] In one implementation scheme, such as Figure 1 As shown, the plurality of first elastic bands 400 are distributed at equal intervals. In another embodiment, the plurality of first elastic bands 400 may also be distributed at non-equal intervals (not shown in the figure).

[0059] In one implementation scheme, such as Figure 1 As shown, the plurality of second elastic bands 500 are distributed at equal intervals. In another embodiment, the plurality of second elastic bands 500 may also be distributed at non-equal intervals (not shown in the figure).

[0060] In an exemplary embodiment, the first elastic band 400 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 500 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).

[0061] In an exemplary embodiment, the first elastic band 400 has a tensile range of 100%-400% (e.g., 100%, 150%, 200%, 250%, 300%, 350%, 400%).

[0062] In an exemplary embodiment, the second elastic band 500 has a tensile range of 100%-400% (e.g., 100%, 150%, 200%, 250%, 300%, 350%, 400%).

[0063] 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 400.

[0064] 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 500.

[0065] In an exemplary embodiment, the first nonwoven fabric 100 and the second nonwoven fabric 200 are bonded together by a first adhesive portion, and the second nonwoven fabric 200 and the third nonwoven fabric 300 are bonded together by a second adhesive portion.

[0066] Figure 3 A schematic diagram of the internal structure of a second elastic layer for wearable hygiene products provided for an embodiment of the present invention; Figure 4 for Figure 3 The corresponding exploded view; Figure 5 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; Figure 6 for Figure 5 The corresponding exploded view; Figure 7 A schematic flowchart of a method for preparing an elastic layer for wearable hygiene products according to an embodiment of the present invention; Figure 8 A schematic flowchart of a second method for preparing an elastic layer for wearable hygiene products, provided for an embodiment of the present invention; Figure 9 A schematic flowchart illustrating a third method for preparing an elastic layer for wearable hygiene products, provided as an embodiment of the present invention.

[0067] The present invention also provides three methods for preparing elastic layers for wearable hygiene products, which are described below with reference to the accompanying drawings.

[0068] In one implementation scheme, such as Figure 7 As shown, a method for preparing an elastic layer for wearable hygiene products includes:

[0069] Step a1) Prepare the first nonwoven fabric 100, the second nonwoven fabric 200 and the third nonwoven fabric 300.

[0070] Step b1) Lay a plurality of first elastic bands 400 on the first nonwoven fabric 100. The spacing D1 between two adjacent elastic bands in the plurality of first elastic bands 400 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 two adjacent elastic bands in the plurality of first elastic bands 400 is 2 to 12 mm.

[0071] Step c1) A plurality of second elastic bands 500 are laid on the third nonwoven fabric 300. The spacing D2 between two adjacent elastic bands in the plurality of second elastic bands 500 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 two adjacent elastic bands in the plurality of second elastic bands 500 is 2 to 12 mm.

[0072] Step d1) The second nonwoven fabric 200 is layered on the side of the first nonwoven fabric 100 where the first elastic band 400 is laid.

[0073] Step e1) The third nonwoven fabric 300 with the side where the second elastic band 500 is laid is stacked on the second nonwoven fabric, such that the projections of the plurality of first elastic bands 400 and the plurality of second elastic bands 500 in the vertical direction are alternately arranged, and the combination spacing D3 between adjacent first elastic bands and second 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 combination spacing D3 between adjacent first elastic bands 400 and second elastic bands 500 is 1 to 6 mm.

[0074] Thus, the product was prepared. Figure 1 and Figure 2 The elastic layer shown is used in wearable hygiene products.

[0075] In an exemplary implementation, such as Figure 7As shown, before laying the plurality of first elastic bands 400 on the first nonwoven fabric 100, the above method further includes:

[0076] Step a2) Spray adhesive onto the first elastic band 400.

[0077] The first elastic band 400 can be bonded to the first nonwoven fabric 100 with glue, and the second nonwoven fabric 200 is bonded to the first nonwoven fabric 100 with glue sprayed on the first elastic band 400.

[0078] In an exemplary implementation, such as Figure 7 As shown, before laying multiple second elastic bands 400 on the third nonwoven fabric 300, the above method further includes:

[0079] Step a3) Spray adhesive onto the second elastic band 500.

[0080] The second elastic band 500 can be bonded to the third nonwoven fabric 300 with glue, and the second nonwoven fabric 200 is bonded to the third nonwoven fabric 300 with glue sprayed on the second elastic band 500.

[0081] In another implementation scheme, such as Figure 8 As shown, a method for preparing an elastic layer for wearable hygiene products includes:

[0082] Step a1) Prepare the first nonwoven fabric 100, the second nonwoven fabric 200 and the third nonwoven fabric 300.

[0083] Step b2) A plurality of first elastic bands 400 are laid on the first side of the second nonwoven fabric 200, and a plurality of second elastic bands 500 are laid on the second side of the second nonwoven fabric 200. The spacing D1 between two adjacent elastic bands in the plurality of first elastic bands 400 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). The spacing D2 between two adjacent elastic bands in the plurality of second elastic bands 500 is 0.2 to 12 mm (e.g., 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm). The first elastic bands 400 and the second elastic bands 500 are arranged alternately in the vertical direction, with a combined spacing D3 of 0.1 to 6 mm (e.g., 0.1 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 two adjacent elastic bands in the plurality of first elastic bands 400 is 2 to 12 mm, the spacing D2 between two adjacent elastic bands in the plurality of second elastic bands 500 is 2 to 12 mm, and the combined spacing D3 between adjacent first elastic bands 400 and second elastic bands 500 is 1 to 6 mm.

[0084] Step c2) The second nonwoven fabric 200 is layered on top of the first nonwoven fabric 100.

[0085] Step d2) Stack the third nonwoven fabric layer 300 on the second nonwoven fabric 200.

[0086] Thus, the product was prepared. Figure 3 and Figure 4 The elastic layer shown is used in wearable hygiene products.

[0087] In an exemplary implementation, such as Figure 8 As shown, before laying a plurality of first elastic bands 400 on the first side of the second nonwoven fabric 200, the above method further includes:

[0088] Step a4) Spray adhesive onto the first elastic band 400.

[0089] The first elastic band 400 can be bonded to the first side of the second nonwoven fabric 200 by adhesive, and the second nonwoven fabric 200 is bonded to the first nonwoven fabric 100 by adhesive sprayed on the first elastic band 400.

[0090] In an exemplary implementation, such as Figure 8 As shown, before laying a plurality of second elastic bands 500 on the second side of the second nonwoven fabric 200, the above method further includes:

[0091] Step a5) Spray adhesive onto the second elastic band 500.

[0092] The second elastic band 500 can be bonded to the second side of the second nonwoven fabric 200 by adhesive, and the second nonwoven fabric 200 is bonded to the third nonwoven fabric 300 by adhesive sprayed onto the second elastic band 500.

[0093] In yet another implementation plan, such as Figure 9 As shown, a method for preparing an elastic layer for wearable hygiene products includes:

[0094] Step a1) Prepare the first nonwoven fabric 100, the second nonwoven fabric 200 and the third nonwoven fabric 300.

[0095] Step b3) Lay a plurality of first elastic bands 400 on the first nonwoven fabric 100. The spacing D1 between two adjacent elastic bands in the plurality of first elastic bands 400 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 two adjacent elastic bands in the plurality of first elastic bands 400 is 2 to 12 mm.

[0096] Step c3) The second nonwoven fabric 200 is layered on top of the first nonwoven fabric 100.

[0097] Step d3) Lay multiple second elastic bands 500 on the second nonwoven fabric 200. The spacing D2 between two adjacent elastic bands 500 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). The first elastic bands 400 and the second elastic bands 500 are arranged in alternating vertical projections, with a combined spacing D3 of 0.1 to 6 mm between adjacent first elastic bands 400 and second elastic bands 500 (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 D2 between two adjacent second elastic bands 500 is 2 to 12 mm, and the combined spacing D3 between adjacent first elastic bands 400 and second elastic bands 500 is 1 to 6 mm.

[0098] Step e3) Lay the third nonwoven fabric 300 on the second nonwoven fabric 200.

[0099] Thus, the product was prepared. Figure 5 and Figure 6 The elastic layer shown is used in wearable hygiene products.

[0100] In an exemplary implementation, such as Figure 9 As shown, before laying the plurality of first elastic bands 400 on the first nonwoven fabric 100, the above method further includes:

[0101] Step a6) Spray adhesive onto the first elastic band 400.

[0102] The first elastic band 400 can be bonded to the first nonwoven fabric 100 with glue, and the second nonwoven fabric 200 is bonded to the first nonwoven fabric 100 with glue sprayed on the first elastic band 400.

[0103] In an exemplary implementation, such as Figure 9 As shown, before laying a plurality of second elastic bands 500 on the second nonwoven fabric 200, the above method further includes:

[0104] Step a7) Spray adhesive onto the second elastic band 500.

[0105] The second elastic band 500 can be bonded to the second nonwoven fabric 200 with adhesive, and the third nonwoven fabric 300 is bonded to the second nonwoven fabric 200 with adhesive sprayed onto the second elastic band 500.

[0106] An embodiment of the present invention also provides a wearable hygiene product, which includes the above-described elastic layer for wearable hygiene products.

[0107] 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.

[0108] 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, comprising: The first nonwoven fabric, the second nonwoven fabric, and the third nonwoven fabric are stacked in sequence; Multiple first elastic bands, coated with adhesive and disposed between a first nonwoven fabric and a second nonwoven fabric, wherein 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, coated with adhesive and positioned between a second nonwoven fabric and a third nonwoven fabric, wherein the spacing between two adjacent elastic bands is 0.2 to 12 mm. The projections of multiple first elastic bands and multiple second elastic bands in the vertical direction are alternately arranged, such that the combined spacing between adjacent first elastic bands and second elastic bands is 0.1 to 6 mm. Among them, multiple first elastic bands are distributed at equal intervals, and multiple second elastic bands are distributed at equal intervals.

2. The elastic layer for wearable hygiene products according to claim 1, wherein, The first elastic band has an average density of 10 dtex-940 dtex, and the second elastic band has an average density of 10 dtex-940 dtex.

3. The elastic layer for wearable hygiene products according to claim 2, wherein, The first elastic band has a tensile range of 100%-400%, and the second elastic band has a tensile range of 100%-400%.

4. The elastic layer for wearable hygiene products according to claim 1, wherein, The first nonwoven fabric and the second nonwoven fabric are bonded together by a first adhesive part, and the second nonwoven fabric and the third nonwoven fabric are bonded together by a second adhesive part.

5. A method for preparing an elastic layer for wearable hygiene products, wherein, include: Prepare a first nonwoven fabric, a second nonwoven fabric, and a third nonwoven fabric; Multiple first elastic bands are laid on the first nonwoven fabric. Before laying the multiple first elastic bands on the first nonwoven fabric, glue is sprayed on the first elastic bands. The spacing between two adjacent elastic bands in the multiple first elastic bands is 0.2 to 12 mm, and the multiple first elastic bands are distributed at equal intervals. Multiple second elastic bands are laid on the third nonwoven fabric. Before laying the multiple second elastic bands on the third nonwoven fabric, glue is sprayed on the second elastic bands. The spacing between two adjacent elastic bands in the multiple second elastic bands is 0.2 to 12 mm, and the multiple second elastic bands are distributed at equal intervals. The second nonwoven fabric is layered on the side of the first nonwoven fabric where the first elastic band is laid; The third nonwoven fabric with the second elastic band laid on it is stacked on the second nonwoven fabric, and the projections of multiple first elastic bands and multiple second elastic bands in the vertical direction are alternately arranged, with the spacing between adjacent first elastic bands and second elastic bands being 0.1 to 6 mm.

6. The method for preparing an elastic layer for wearable hygiene products according to claim 5, wherein, Before laying multiple first elastic bands on the first nonwoven fabric, the method further includes: The first elastic band can be bonded to the first non-woven fabric with glue, and the second non-woven fabric is bonded to the first non-woven fabric with glue sprayed on the first elastic band.

7. The method for preparing an elastic layer for wearable hygiene products according to claim 5, wherein, Before laying multiple second elastic bands on the third nonwoven fabric, the method further... include: The second elastic band can be bonded to the third nonwoven fabric with glue, and the second nonwoven fabric is bonded to the third nonwoven fabric by glue sprayed onto the second elastic band.

8. A method for preparing an elastic layer for wearable hygiene products, wherein, include: Prepare a first nonwoven fabric, a second nonwoven fabric, and a third nonwoven fabric; Multiple first elastic bands are laid on the first side of the second nonwoven fabric. Before laying the multiple first elastic bands on the first side of the second nonwoven fabric, glue is sprayed onto the first elastic bands. Multiple second elastic bands are laid on the second side of the second nonwoven fabric. Before laying the multiple second elastic bands on the second side of the second nonwoven fabric, glue is sprayed onto the second elastic bands. 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 multiple first elastic bands are evenly distributed. The multiple second elastic bands are evenly distributed. The projections of the multiple first elastic bands and the multiple second elastic bands in the vertical direction are alternately arranged. The combined spacing between adjacent first elastic bands and second 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.

9. The method for preparing an elastic layer for wearable hygiene products according to claim 8, wherein, Before laying multiple first elastic bands on the first side of the second nonwoven fabric, the method further... include: The first elastic band can be bonded to the first side of the second nonwoven fabric with glue, and the second nonwoven fabric is bonded to the first nonwoven fabric with glue sprayed on the first elastic band.

10. The method for preparing an elastic layer for wearable hygiene products according to claim 8, wherein, Before laying multiple second elastic bands on the second side of the second nonwoven fabric, the method further... include: The second elastic band can be bonded to the second side of the second nonwoven fabric with glue, and the second nonwoven fabric is bonded to the third nonwoven fabric with glue sprayed on the second elastic band.

11. A method for preparing an elastic layer for wearable hygiene products, wherein, include: Prepare a first nonwoven fabric, a second nonwoven fabric, and a third nonwoven fabric; Multiple first elastic bands are laid on the first nonwoven fabric. Before laying the multiple first elastic bands on the first nonwoven fabric, glue is sprayed on the first elastic bands. The spacing between two adjacent elastic bands in the multiple first 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 second nonwoven fabric. Before laying the multiple second elastic bands on the second nonwoven fabric, glue is sprayed on the second elastic bands. The spacing between two adjacent elastic bands in the multiple second elastic bands is 0.2 to 12 mm, and the projections of multiple first elastic bands and multiple second elastic bands in the vertical direction are alternately arranged. The combined spacing of adjacent first elastic bands and second elastic bands is 0.1 to 6 mm. The multiple first elastic bands are evenly distributed, and the multiple second elastic bands are evenly distributed. The third nonwoven fabric is layered on top of the second nonwoven fabric.

12. The method for preparing an elastic layer for wearable hygiene products according to claim 11, wherein, Before laying multiple first elastic bands on the first nonwoven fabric, the method further... include: The first elastic band is bonded to the first nonwoven fabric with glue, and the second nonwoven fabric is bonded to the first nonwoven fabric with glue sprayed onto the first elastic band.

13. The method for preparing an elastic layer for wearable hygiene products according to claim 11, wherein, Before laying multiple second elastic bands on the second nonwoven fabric, the method further... include: The second elastic band is bonded to the second nonwoven fabric with glue, and the third nonwoven fabric is bonded to the second nonwoven fabric with glue sprayed onto the second elastic band.

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