Dispersible non-woven fabric

Abstract

The utility model provides a non-woven fabric capable of being dispersed, which relates to the technical field of non-woven fabric production and comprises a first composite layer, a fiber layer and a second composite layer which are sequentially arranged from top to bottom. The first composite layer and the second composite layer are formed by mixing tencel fibers and viscose fibers, and the fiber layer is wood pulp fibers; a plurality of first cross star holes are distributed in the first composite layer and the second composite layer in a matrix manner, so that the problem that the non-woven fabric in the prior art is formed by directly entangling three layers of fibers in a spunlace manner, so that the fibers are difficult to disperse when being in contact with a water body is solved. According to the non-woven fabric, the technical effect of improving the dispersing property of the non-woven fabric is achieved on the premise that the strength of the non-woven fabric is not influenced.

Description

Technical Field

[0001] This utility model relates to the field of nonwoven fabric production technology, and in particular to a washable nonwoven fabric. Background Technology

[0002] With rapid economic development and people's increasing pursuit of quality of life, non-woven fabric products (face towels, makeup remover wipes, cotton wipes, etc.) have become an indispensable part of daily life in recent years. Non-woven fabric is a type of non-woven cloth; it is a textile made by mechanically processing and chemically treating a fiber network of short or long fibers. Unlike traditional textiles, non-woven fabric does not require spinning and weaving processes, thus its production process is simple and its applications are wide-ranging.

[0003] In order to prevent damage or breakage during production, processing and use, nonwoven fabrics in the present technology are made by directly entangled three layers of fibers through hydroentangling. However, because the three-layer fiber structure directly increases the wet strength of the nonwoven fabric, it is difficult for the nonwoven fabric to disperse when it comes into contact with water after use, and it has poor biodegradability. Utility Model Content

[0004] The purpose of this invention is to provide a washable nonwoven fabric to alleviate the technical problem in the prior art where three layers of fibers are directly entangled by hydroentangling, resulting in difficulty in dispersing when in contact with water.

[0005] This utility model provides a washable nonwoven fabric, comprising: a first composite layer, a fiber layer and a second composite layer arranged sequentially from top to bottom;

[0006] The first and second composite layers are made of a mixture of Tencel fiber and viscose fiber, and the fiber layer is made of wood pulp fiber; both the first and second composite layers have a number of first cross-shaped holes distributed in a matrix.

[0007] Furthermore, a second cross-shaped hole is formed on the fiber layer, and the second cross-shaped hole is located at the center position between the four first cross-shaped holes that form the smallest rectangle in the projection direction.

[0008] Furthermore, the center distance between two adjacent first cross-shaped holes is 5cm to 10cm.

[0009] Furthermore, the radial and transverse diameters of the first and second cross-shaped apertures are both 2.5cm to 5cm.

[0010] Furthermore, the viscose fiber content in the first composite layer and the second composite layer is 20% to 50%, and the Tencel fiber content in the first composite layer and the second composite layer is 50% to 80%.

[0011] Furthermore, the Tencel fibers in the first and second composite layers have a length of 6mm to 12mm.

[0012] Furthermore, the viscose fiber length in the first composite layer and the second composite layer is 6mm to 12mm.

[0013] Furthermore, the wood pulp fibers in the fiber layer have a length of 2mm to 4mm.

[0014] Furthermore, the wood pulp fibers in the fiber layer are one of softwood pulp fibers, bamboo pulp fibers, or straw pulp fibers.

[0015] Furthermore, the first composite layer, the fiber layer, and the second composite layer are entangled by hydroentangling.

[0016] Beneficial effects:

[0017] This utility model provides a washable nonwoven fabric, comprising a first composite layer, a fiber layer, and a second composite layer arranged sequentially from top to bottom; the first and second composite layers are composed of a mixture of Tencel fibers and viscose fibers, and the fiber layer is composed of wood pulp fibers; although wood pulp fibers have good air permeability and moisture absorption, their overall strength is poor. In order to increase the overall strength of the nonwoven fabric, a composite layer is set between the upper and lower layers. The Tencel fibers in the first and second composite layers have high strength, and when mixed with viscose fibers with weak moisture absorption, the strength and stability of the nonwoven fabric can be improved, and the middle fiber layer can be protected.

[0018] Both the first and second composite layers have a matrix of first cross-shaped perforations. By setting these first cross-shaped perforations, the fiber layer is allowed to come into contact with water first, causing its strength to decrease and it to separate from the first and second composite layers, thus improving the overall washability of the nonwoven fabric.

[0019] This utility model provides a washable nonwoven fabric that greatly increases the washability of the nonwoven fabric without causing damage or breakage during production, processing, and use, allowing it to disperse and degrade rapidly under the action of water flow. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of the washable nonwoven fabric provided in an embodiment of the present utility model;

[0022] Figure 2 A planar schematic diagram of the first cross-shaped hole in the nonwoven fabric that can be broken apart, provided for an embodiment of this utility model;

[0023] Figure 3 A planar schematic diagram of the second cross-shaped hole in the fusible nonwoven fabric provided in this embodiment of the utility model;

[0024] Figure 4 This is a schematic diagram of the projection of the second cross-shaped hole in the vertical direction in the washable nonwoven fabric provided in this embodiment of the utility model.

[0025] Icons: 100 - First composite layer; 200 - Fiber layer; 300 - Second composite layer; 400 - First cross-shaped perforation; 500 - Second cross-shaped perforation. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0028] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0029] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0030] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0031] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0033] like Figure 1 As shown, this utility model embodiment provides a washable nonwoven fabric, including: a first composite layer 100, a fiber layer 200 and a second composite layer 300 arranged sequentially from top to bottom;

[0034] The first composite layer 100 and the second composite layer 300 are made of a mixture of Tencel fiber and viscose fiber, and the fiber layer 200 is made of wood pulp fiber; both the first composite layer 100 and the second composite layer 300 have a number of first cross-shaped holes 400 distributed in a matrix.

[0035] Specifically, the first composite layer 100, the fiber layer 200, and the second composite layer 300 are laid sequentially from top to bottom and connected using a hydroentangling or sol-gel method to form a washable nonwoven fabric. The first composite layer 100 and the second composite layer 300 are composed of a mixture of Tencel and viscose fibers, while the middle fiber layer 200 is made of wood pulp fibers. Because wood pulp fibers have good air permeability and moisture absorption, but poor overall strength, the first composite layer 100 and the second composite layer 300 are used to increase the overall strength of the nonwoven fabric. Tencel fibers have high strength and good dimensional stability after washing; when mixed with viscose fibers, which have weak moisture absorption, this improves the strength and stability of the nonwoven fabric and protects the fiber layer 200.

[0036] It should be noted that the fiber layer 200 can also be made of 100% viscose fiber or a blend of other washable and biodegradable fibers.

[0037] like Figure 2As shown, the surfaces of the first composite layer 100 and the second composite layer 300 are arranged in a matrix with the same position and spacing, forming a first cross-shaped perforation 400. When in contact with water, the middle fiber layer 200 can quickly come into contact with the water first through the first cross-shaped perforation 400. When the wood pulp fiber comes into contact with water, its strength decreases, causing it to separate from the first composite layer 100 and the second composite layer 300. This results in defects in the overall nonwoven material, thus increasing the washability of the nonwoven fabric.

[0038] In addition, by using a first cross-shaped hole 400 with the same horizontal and radial length, water can penetrate into the fiber layer 200 more evenly when passing through the first composite layer 100 and the second composite layer 300, compared to circular or rectangular holes. At the same time, the cross-shaped hole can also prevent insufficient strength due to excessively large or uneven openings during daily use.

[0039] In an embodiment of this utility model, a second cross-shaped hole 500 is provided on the fiber layer 200. The second cross-shaped hole 500 is located at the center position between the four first cross-shaped holes 400 that form the smallest rectangle in the projection direction.

[0040] The center distance between two adjacent first cross-shaped apertures 400 is 5cm to 10cm.

[0041] The radial and transverse diameters of the first cross-shaped aperture 400 and the second cross-shaped aperture 500 are both 2.5cm to 5cm.

[0042] Specifically, such as Figure 3 , Figure 4 As shown, the surface of the fiber layer 200 has second cross-shaped holes 500, which are located at the center of the four first cross-shaped holes 400 forming the smallest rectangle in the projection direction. If the nonwoven fabric is too large and the distance between adjacent first cross-shaped holes 400 is too far, a large area of ​​the middle fiber layer 200 will not be in contact with the water flow. In this case, the second cross-shaped holes 500, which are staggered from the first cross-shaped holes 400, can make the surface of the first composite layer 100 and the second composite layer 300 at the upper and lower ends thinner at the contact with the second cross-shaped holes 500, and also accelerate the speed at which they are dispersed by water, thus improving their dispersibility.

[0043] By creating a smaller first cross-shaped hole 400, the overall strength of the nonwoven fabric can be guaranteed, the surface strength of the nonwoven fabric can be improved, and damage can be prevented due to insufficient strength of the nonwoven fabric during use.

[0044] First cross-shaped holes 400 are formed on the surfaces of the first composite layer 100 and the second composite layer 300. The lateral and longitudinal spacing between the center cross positions of two adjacent first cross-shaped holes 400 is 5cm to 10cm. This center-to-center distance can reduce the risk of structural deformation and cracking, enhance the stability and strength of the nonwoven fabric, and also ensure that water can be evenly penetrated into the fiber layer 200 through the first cross-shaped holes 400, increasing the contact area between the fiber layer 200 and water.

[0045] In the embodiments of this utility model, the viscose fiber content in the first composite layer 100 and the second composite layer 300 is 20% to 50%, and the Tencel fiber content in the first composite layer 100 and the second composite layer 300 is 50% to 80%.

[0046] Specifically, by weight percentage, the combined weight percentage of viscose fiber and Tencel fiber is 100%. Tencel fiber has higher strength, and when blended with viscose fiber, which has lower moisture absorption, it can improve the strength and stability of the nonwoven fabric. While viscose fiber has lower strength, it provides better flexibility and comfort.

[0047] In the embodiments of this utility model, the Tencel fiber length in the first composite layer 100 and the second composite layer 300 is 6mm to 12mm.

[0048] The viscose fiber length in the first composite layer 100 and the second composite layer 300 is 6mm to 12mm.

[0049] The wood pulp fibers in fiber layer 200 have a length of 2mm to 4mm.

[0050] The wood pulp fiber of fiber layer 200 is one of softwood pulp fiber, bamboo pulp fiber or straw pulp fiber.

[0051] Specifically, the Tencel fibers and viscose fibers in the first composite layer 100 and the second composite layer 300 are both between 6mm and 12mm in length. Longer fibers can provide better softness and comfort, while increasing the gaps between fibers, improving the moisture absorption of the nonwoven fabric, and thus increasing the washability.

[0052] The wood pulp fibers in the middle fiber layer 200 are 2mm to 4mm in length, providing a soft and delicate touch and increasing comfort.

[0053] It should be noted that the two types of fibers must be of the same length to help maintain the uniformity and consistency of the composite layer. Fibers of the same length are more likely to be evenly distributed during the composite process, which helps to improve the bonding force between the two types of fibers and enhance the overall strength of the nonwoven fabric.

[0054] In an embodiment of this utility model, the first composite layer 100, the fiber layer 200, and the second composite layer 300 are entangled by hydroentangling.

[0055] Specifically, the hydroentangling process uses high-pressure water jets to fully entangle the first composite layer 100, the fiber layer 200, and the second composite layer 300. Without adding any chemical adhesives, high-strength nonwoven fabric is produced by relying on the cohesive force of the intertwined fibers.

[0056] Based on the above embodiments, the working process of the biodegradable antibacterial nonwoven fabric provided by this utility model is as follows: the first composite layer 100, the fiber layer 200 and the second composite layer 300 are entangled by hydroentangling to obtain a washable nonwoven fabric; when it comes into contact with water, the water flow preferentially contacts the fiber layer 200 through the first cross-shaped holes 400 on both ends. The strength of the fiber layer 200 decreases after it comes into contact with water. In addition, the presence of the second cross-shaped holes 500 causes defects in the entire nonwoven fabric, causing it to separate from the first composite layer 100 and the second composite layer 300, making the interlayer easier to be washed away and enhancing its washability.

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A washable nonwoven fabric, characterized in that, include: The first composite layer (100), the fiber layer (200), and the second composite layer (300) are arranged sequentially from top to bottom; The first composite layer (100) and the second composite layer (300) are made of a mixture of Tencel fiber and viscose fiber, and the fiber layer (200) is made of wood pulp fiber; the first composite layer (100) and the second composite layer (300) each have a plurality of first cross-shaped holes (400) distributed in a matrix.

2. The washable nonwoven fabric according to claim 1, characterized in that, The fiber layer (200) has a second cross-shaped hole (500), which is located at the center of the four first cross-shaped holes (400) that form the smallest rectangle in the projection direction.

3. The washable nonwoven fabric according to claim 2, characterized in that, The center distance between two adjacent first cross-shaped holes (400) is 5cm to 10cm.

4. The washable nonwoven fabric according to claim 2, characterized in that, The radial and transverse diameters of the first cross-shaped hole (400) and the second cross-shaped hole (500) are both 2.5cm to 5cm.

5. The washable nonwoven fabric according to claim 1, characterized in that, The viscose fiber content in the first composite layer (100) and the second composite layer (300) is 20% to 50%, and the Tencel fiber content in the first composite layer (100) and the second composite layer (300) is 50% to 80%.

6. The washable nonwoven fabric according to claim 5, characterized in that, The Tencel fibers in the first composite layer (100) and the second composite layer (300) have a length of 6 mm to 12 mm.

7. The washable nonwoven fabric according to claim 5, characterized in that, The viscose fiber length in the first composite layer (100) and the second composite layer (300) is 6mm to 12mm.

8. The washable nonwoven fabric according to claim 1, characterized in that, The wood pulp fibers in the fiber layer (200) have a length of 2 mm to 4 mm.

9. The washable nonwoven fabric according to claim 1, characterized in that, The wood pulp fibers of the fiber layer (200) are one of softwood pulp fibers, bamboo pulp fibers, or straw pulp fibers.

10. The washable nonwoven fabric according to claim 1, characterized in that, The first composite layer (100), the fiber layer (200), and the second composite layer (300) are entangled by hydroentangling.

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