Breathable and comfortable laminated nonwoven fabric

Abstract

A breathable and comfortable laminated nonwoven fabric comprising a porous layer and a support layer attached to one side of the porous layer, wherein one support layer or at least two support layers are provided, the porous layer is provided with a plurality of breathable flow guide holes penetrating two opposite sides of the porous layer, and each breathable flow guide hole has a closed geometric shape, and the largest dimension of each breathable flow guide hole is not smaller than 2 mm; Both the porous layer and the support layer are made of a hot air nonwoven fabric.

Description

Technical area

[0001] The present utility model relates to the technical field of nonwovens, in particular to a breathable and comfortable laminated nonwoven. State of the art

[0002] The nonwovens industry, especially the nonwovens industry for sanitary products, has developed rapidly in recent years. With the development of nonwovens technology and the end-product market, especially in sanitary products such as infant diapers and sanitary napkins, the requirements for a breathable and comfortable experience from nonwovens are becoming increasingly higher. Existing nonwovens have some disadvantages in this regard, mainly in the following points: In products such as infant diapers, infants under one year old usually have loose stools, but it is difficult for the loose stools to fully penetrate the existing nonwovens, resulting in the infants' skin being in direct contact with the loose stools for a long time. In addition, infant diapers are uncomfortable to wear and may damage the infants' skin.In products such as sanitary napkins, it is difficult for menstrual blood to fully penetrate the existing nonwoven fabrics, causing menstrual blood to come into contact with the skin and adhere to the skin, resulting in poor wearing comfort. To improve the air permeability of the products, the diapers or pads are perforated on the outside, but the holes created by the conventional perforation method are too small, and the actual air permeability is limited. Summary of the utility model

[0003] The main objective of the present utility model is to provide a breathable and comfortable laminated nonwoven fabric to solve the problem of lack of breathability and comfort of existing nonwoven fabrics for sanitary products.

[0004] To solve the above problem, the present utility model is implemented as follows: A breathable and comfortable laminated nonwoven fabric comprising a porous layer and a support layer attached to one side of the porous layer, wherein one support layer or at least two support layers are provided, the porous layer being provided with a plurality of breathable flow-guiding holes penetrating two opposite sides of the porous layer, each breathable flow-guiding hole having a closed geometric shape, and the largest dimension of each breathable flow-guiding hole being not less than 2 mm; Both the porous layer and the carrier layer consist of a hot-air nonwoven fabric. The porous layer and the carrier layer are firmly bonded together by hot-air welding.

[0005] The breathable flow guide holes are introduced into the porous layer by piercing or punching.

[0006] The largest dimension of the breathable flow guide hole is not smaller than 5 mm.

[0007] The closed geometric shape of the breathable flow guide opening can be a circular, elliptical, rectangular, square or irregular geometric shape.

[0008] The closed geometric shape of the breathable flow guide hole is an elliptical shape.

[0009] The hot air nonwoven fabric is selected from ES hot air cotton nonwovens.

[0010] If there are at least two carrier layers, two adjacent carrier layers are firmly joined by hot air welding.

[0011] The plurality of breathable flow guide holes are arranged in a plurality of rows and there are a plurality of breathable flow guide holes in each row.

[0012] The present utility model has the following positive effects: In the present utility model, the porous layer and the support layer are made of a hot air nonwoven fabric, a plurality of breathable flow guide holes with a size of not less than 2 mm are provided in the porous layer by punching, and the porous layer with the large diameter holes and the support layer are firmly bonded into a laminated nonwoven fabric by hot air welding, so that excretions such as loose stools or menstrual blood can flow into the support layer through the breathable flow guide holes in the porous layer, thereby avoiding direct contact between the excretions and the skin, improving a breathable and comfortable experience for the user, solving the problem of adhesive leakage in conventional laminated products with large holes, and avoiding the occurrence of adhesive leakage.When the laminated nonwoven fabric of the present invention is applied to the inner layer of a hygiene product, the porous layer is located in the innermost layer and directly contacts the user's skin, thereby solving the problem of human excrement penetrating the laminated nonwoven fabric. The contact area with the skin can be isolated and reduced to maintain skin health. Furthermore, when the laminated nonwoven fabric of the present invention is applied to the outer layer of an infant diaper or a sanitary napkin, the breathability of the entire product can be improved. Description of the drawings

[0013] The present utility model is described in more detail below with reference to the accompanying drawings in specific embodiments. Fig. 1 is a schematic structural diagram of the breathable and comfortable laminated nonwoven fabric in the present utility model; and Fig. 2 is an exploded view of the breathable and comfortable laminated nonwoven fabric of the present utility model. Description of the reference numbers

[0014] 1 - porous layer; 2 - support layer; 3 - breathable flow guide hole. Embodiments

[0015] The technical solution in the embodiments of the present utility model will be described clearly and completely below with reference to the accompanying drawings used in the embodiments of the present utility model. While many details are described below to facilitate a complete understanding of the present utility model, the present utility model may be implemented in ways other than those described herein, and those skilled in the art may make similar developments without departing from the spirit and scope of the present utility model. Therefore, the present utility model is not limited to the specific embodiments disclosed below.

[0016] As in the Fig. 1 and Fig.As shown in Figure 2, the breathable and comfortable laminated nonwoven fabric in the present invention comprises a porous layer 1 and a support layer 2 attached to one side of the porous layer 1. One support layer 2 or at least two support layers 2 are provided, and both the porous layer 1 and the support layer 2 are made of a hot-air nonwoven fabric. In this embodiment, the hot-air nonwoven fabric is selected from ES hot-air cotton nonwovens. The porous layer 1 and the support layer 2 are firmly bonded together by hot-air welding. Hot-air welding is a manufacturing method in which hot air in a drying device penetrates a hot-air nonwoven fabric, so that the bonding fibers in the hot-air nonwoven fabric are melted under the heat to achieve a bonding effect. The porous layer 1 is provided with a plurality of breathable flow-guiding holes 3.which penetrate the two opposite sides of the porous layer 1, and the breathable flow-guiding holes 3 are formed in the porous layer 1 by piercing or punching. In this embodiment, the breathable flow-guiding holes 3 in the porous layer 1 are formed by punching, and this punching method can further ensure the formation of large-diameter breathable flow-guiding holes 3 and facilitate the discharge of excrement through the large-diameter breathable flow-guiding holes 3. Each breathable flow-guiding hole 3 has a closed geometric shape, and the largest dimension of each breathable flow-guiding hole 3 is not less than 2 mm. In existing laminated nonwoven fabrics used for sanitary products, holes are usually first punched in the nonwoven fabric layer to be punched, then the layer is laminated with other nonwoven fabric layers.by spraying adhesive after punching. To avoid the problem of adhesive leakage during lamination, the hole size is generally in the diameter range below 1.5 mm, otherwise the adhesive can easily leak out and impair the use of the laminated nonwoven fabrics. In the present utility model, the porous layer 1 and the backing layer 2 are made of a hot-air nonwoven fabric. A plurality of large-diameter breathable flow-guiding holes 3, the largest dimension of which is not less than 2 mm, are provided in the porous layer 1 by punching. The porous layer 1 with the large-diameter holes and the backing layer 2 are firmly bonded into a laminated nonwoven fabric by hot-air welding. Thus, when the laminated nonwoven fabric in the present utility model is applied to the inner layer of a sanitary product, the porous layer 1 is adjacent to the inner layer of a sanitary product.The porous layer 1 is adjacent to the skin, allowing excretions such as loose stools or menstrual blood to flow through the breathable flow-guiding holes 3 in the porous layer 1 into the backing layer 2, thereby avoiding direct contact between the excretions and the skin, improving a breathable and comfortable experience for the user, solving the problem of adhesive leakage in conventional laminated products with large holes, and preventing the occurrence of adhesive leakage. The closed geometric shape of the breathable flow-guiding hole 3 can be circular, elliptical, rectangular, square, or irregular. Furthermore, the largest dimension of the breathable flow-guiding hole 3 must not be less than 5 mm. In this embodiment, the largest dimension of the breathable flow-guiding hole 3 refers to the distance between two points that are farthest apart.at the outer edge of the closed geometry of the breathable flow guide hole 3; furthermore, "not less than" in this utility model is synonymous with "equal to or greater than." In this embodiment, the closed geometric shape of the breathable flow guide hole 3 is elliptical, and the major axis (i.e., the largest dimension) of the breathable flow guide hole 3 is not less than 5 mm. In a specific embodiment, the closed geometric shape of the breathable flow guide hole 3 is elliptical, the major axis of the breathable flow guide hole 3 is 8 mm, and the minor axis of the breathable flow guide hole 3 is 3 mm. Such large-diameter holes allow excrement to enter the support layer 2 more quickly.whereby breathability and comfort for the user can be further improved. In one embodiment, a single carrier layer 2 is provided. In another embodiment, at least two carrier layers 2 are provided, and each two adjacent carrier layers 2 are firmly bonded together by hot-air welding.

[0017] In the present utility model, the plurality of breathable flow guide holes 3 are arranged in a plurality of rows, and in each row there are a plurality of breathable flow guide holes 3. In one embodiment, the plurality of breathable flow guide holes 3 are elliptical holes.In each row of breathable flow guide holes 3, the major axis direction of each breathable flow guide hole 3 is perpendicular to the arrangement direction of the breathable flow guide holes 3 in each row, and the breathable flow guide holes 3 in two adjacent rows are staggered so that the breathable flow guide holes 3 in a lower row can be arranged between two corresponding breathable flow guide holes 3 in the upper row, and as many breathable flow guide holes 3 as possible can be arranged in the porous layer 1 with the same area, thereby allowing excrement to be discharged more quickly. The laminated nonwoven fabric developed by the applicant has achieved good results in actual tests. The laminated nonwoven fabric of the present utility model can be applied to the inner layer of a hygiene product such as a diaper.a diaper or a sanitary napkin, wherein the porous layer 1 is in direct contact with the user's skin, so that the excreta can quickly penetrate into the backing layer 2 through the breathable flow guide holes 3 and be isolated from the user's skin; thereby, the actual effect of the product can be improved, and the user can have a new breathable and comfortable experience and enjoy further health care. Furthermore, the laminated nonwoven fabric in the present utility model can also be applied to the outer layer of a hygiene product, with the porous layer 1 located in the outermost layer; thus, the breathability of the entire product can be improved, and the consumer can have a new visual experience.

[0018] It is obvious that the embodiments described here represent only some embodiments of the present utility model, but not all possible embodiments of the present utility model. Those with ordinary skill in the art can derive other embodiments based on the embodiments presented here without any creative effort; however, all such embodiments are considered to fall within the scope of the present utility model.

Claims

[1] A breathable and comfortable laminated nonwoven fabric comprising a porous layer and a support layer attached to one side of the porous layer, wherein one support layer or at least two support layers are provided, the porous layer is provided with a plurality of breathable flow guide holes penetrating two opposite sides of the porous layer, and each breathable flow guide hole has a closed geometric shape, and the largest dimension of each breathable flow guide hole is not smaller than 2 mm; Both the porous layer and the support layer are made of a hot air nonwoven fabric. [2] The breathable and comfortable laminated nonwoven fabric according to claim 1, wherein the porous layer and the support layer are firmly bonded by hot air welding. [3] The breathable and comfortable laminated nonwoven fabric according to claim 1, wherein the breathable flow guide holes in the porous layer are formed by piercing or punching. [4] The breathable and comfortable laminated nonwoven fabric according to claim 1, wherein the largest dimension of the breathable flow guide hole is not smaller than 5 mm. [5] The breathable and comfortable laminated nonwoven fabric according to claim 1, wherein the closed geometric shape of the breathable flow guide hole is a circular, elliptical, rectangular or square shape. [6] The breathable and comfortable laminated nonwoven fabric according to claim 5, wherein the closed geometric shape of the breathable flow guide hole is an elliptical shape. [7] The breathable and comfortable laminated nonwoven fabric according to claim 1, wherein the hot air nonwoven fabric is selected from ES hot air cotton nonwoven fabrics. [8] Breathable and comfortable laminated nonwoven fabric according to claim 1, wherein when there are at least two carrier layers, two adjacent carrier layers are firmly bonded by hot air welding. [9] The breathable and comfortable laminated nonwoven fabric according to claim 1, wherein the plurality of breathable flow guide holes are arranged in a plurality of rows, and there are a plurality of breathable flow guide holes in each row.

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