Moisture-proof non-woven fabric

Abstract

The utility model discloses a moisture-proof non-woven fabric which comprises a base cloth area and rectangular areas, the base cloth area is located between two adjacent rectangular areas, each rectangular area comprises a first right-angle triangular area, a second right-angle triangular area and an inclined base cloth area, and the first right-angle triangular area and the second right-angle triangular area are higher than the base cloth area. The first right-angle triangular area and the second right-angle triangular area are higher than the oblique base cloth area and adopt one-way lapping, one base cloth area between two adjacent rectangular areas is crossed lapping, and the other base cloth area between the two adjacent rectangular areas is one-way lapping; and the oblique base cloth area adopts cross lapping. According to the non-woven fabric, cross lapping is adopted in the base cloth area, one-way lapping is adopted in the right-angle triangular area, fiber winding on the edge of the right-angle triangular area is reinforced, meanwhile, the base cloth area reinforces and stabilizes the triangular structure of the right-angle triangular area, the fiber winding density of the base cloth area is different from that of the right-angle triangular area, and the overall strength of the non-woven fabric is improved.

Description

Technical Field

[0001] This utility model relates to the field of nonwoven fabrics, and more specifically, to a moisture-resistant nonwoven fabric. Background Technology

[0002] Nonwoven fabrics are made by needle punching or hydroentangling fibers to make them interlock or rub together to form a planar structure. When nonwoven fabrics absorb moisture, the planar structure of nonwoven fabrics will reduce the direct contact between fibers due to the presence of moisture, thereby reducing the cohesion or friction between fibers. As a result, the fibers are squeezed by water and become loose, which reduces the overall strength of the nonwoven fabric. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a moisture-resistant nonwoven fabric. This fabric is formed by needle punching fibers to create a base fabric area and a right-angled triangular area. The base fabric area uses different cross-laying methods, while the inside of the right-angled triangular area uses unidirectional laying. This strengthens the fiber winding in the base fabric area, making the triangular structure of the right-angled triangular area more stable. Therefore, when the nonwoven fabric gets wet, the fibers inside the right-angled triangular area experience reduced cohesion due to the moisture. However, because the fiber winding density in the base fabric area is greater than that inside the right-angled triangular area, the fibers inside the right-angled triangular area, even when squeezed by water, cannot loosen, thus preventing the right-angled triangular area from becoming too loose. The fibers inside the triangular area reduce cohesion, thereby increasing the strength of the fibers at the edge of the right-angled triangle area. At the same time, it increases the resistance of the internal fibers to loosening towards the edge, thus increasing the overall strength of the nonwoven fabric. Furthermore, the right-angled triangle area forms a convex shape, creating a height difference with the base fabric area and the oblique edge area. When the nonwoven fabric is wet, the right-angled triangle area quickly guides the water to the base fabric area, preventing water accumulation. The symmetry of the two right-angled triangle areas ensures that the water is evenly distributed, thereby increasing the friction of the fibers within the right-angled triangle area and improving the overall moisture resistance of the nonwoven fabric. When the nonwoven fabric is dry, the fiber density inside the right-angled triangle area is low and the convex shape increases the air permeability of the nonwoven fabric.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a moisture-resistant nonwoven fabric, comprising a base fabric area and a rectangular area, wherein the base fabric area is located between two adjacent rectangular areas, and the rectangular area includes a first right-angled triangular area, a second right-angled triangular area, and a diagonal base fabric area, wherein the first right-angled triangular area and the second right-angled triangular area are higher than the base fabric area, and the first right-angled triangular area and the second right-angled triangular area are higher than the diagonal base fabric area, wherein the first right-angled triangular area and the second right-angled triangular area are laid in a unidirectional manner, one of the base fabric areas located between two adjacent rectangular areas is laid in a cross-laid manner, and the other base fabric area located between two adjacent rectangular areas is laid in a unidirectional manner, and the diagonal base fabric area is laid in a cross-laid manner.

[0005] The present invention is further configured such that the rectangular areas are arranged in a matrix and the base fabric areas are arranged in a cross shape.

[0006] The present invention is further configured such that, along the length of the nonwoven fabric, the first right-angled triangular region and the second right-angled triangular region are arranged alternately.

[0007] The present invention is further configured such that the oblique base fabric region is located between the hypotenuse of the first right-angled triangle region and the hypotenuse of the second right-angled triangle region, and the first right-angled triangle region and the second right-angled triangle region are symmetrical about the oblique base fabric region as an axis of symmetry.

[0008] The present invention is further configured such that the first right-angled triangular region and the second right-angled triangular region are of equal size.

[0009] The present invention is further configured such that the width of the oblique base fabric region is greater than the width of the base fabric region.

[0010] The present invention is further configured such that the ratio of the base L to the height H of the first right-angled triangular region and the second right-angled triangular region is 1:0.6 to 1:1.

[0011] The present invention is further configured such that the edges of the first right-angled triangular region and the edges of the second right-angled triangular region are both surrounded by the base fabric region and the oblique base fabric region.

[0012] The present invention is further configured such that when the first right-angled triangular area and the second right-angled triangular area are longitudinally unidirectionally laid, the longitudinal base fabric area located between two adjacent rectangular areas is unidirectionally laid, and the transverse base fabric area located between two adjacent rectangular areas is cross-laid.

[0013] The present invention is further configured such that when the first right-angled triangular area and the second right-angled triangular area are laid in a horizontal unidirectional manner, the horizontal base fabric area located between two adjacent rectangular areas is laid in a unidirectional manner, and the vertical base fabric area located between two adjacent rectangular areas is laid in a cross-layout manner.

[0014] In summary, this utility model has the following beneficial effects:

[0015] By needle-punching different fiber arrangements and web formations, a base fabric region and a right-angled triangular region are formed. The edges of the right-angled triangular regions are cross-laid with the base fabric region, and the cross-laid method varies between different edges and base fabric regions. The interior of the right-angled triangular regions uses unidirectional web formation. Therefore, the fiber winding density in the base fabric region is greater than that at the edges of the right-angled triangular regions, and the fiber winding density at the edges of the right-angled triangular regions is greater than that inside the right-angled triangular regions. Thus, the edges of the right-angled triangular regions and the base fabric region enhance the stability of the triangular structure while increasing the fiber winding density of the right-angled triangular regions themselves. The resistance between the internal fibers allows the fibers inside the right-angled triangle area to remain cohesive even after getting wet, thus increasing the moisture resistance of the nonwoven fabric. Furthermore, because the fiber density is high in the base fabric area and at the edge of the right-angled triangle area, a protrusion is formed inside the right-angled triangle area. Therefore, when the nonwoven fabric gets wet, the right-angled triangle area can quickly guide the water to the base fabric area, preventing water from accumulating inside the right-angled triangle area. In addition, the two right-angled triangle areas form symmetry, increasing the uniform distribution of the nonwoven fabric when wet and increasing the breathability of the nonwoven fabric when dry. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a nonwoven fabric in this embodiment;

[0017] Figure 2 for Figure 1 A sectional view along the A-A direction.

[0018] Attached diagram labels: base fabric area 1, rectangular area 2, first right-angled triangle area 21, second right-angled triangle area 22, oblique base fabric area 23. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] like Figure 1As shown in Figure 2, this embodiment discloses a moisture-resistant nonwoven fabric, including a base fabric area 1 and a rectangular area 2. The rectangular area 2 includes a first right-angled triangular area 21, a second right-angled triangular area 22, and a diagonal base fabric area 23. Because the first right-angled triangular area 21 and the second right-angled triangular area 22 are laid out in one direction, they are arranged alternately along the length of the nonwoven fabric. Since the fiber laying of the first right-angled triangular area 21 and the second right-angled triangular area 22 is the same, but because the diagonal base fabric area is... Fabric area 23 is located between the hypotenuse of the first right-angled triangle area 21 and the hypotenuse of the second right-angled triangle area 22. Therefore, the two longer right-angled sides of the first right-angled triangle area 21 and the second right-angled triangle area 22 are located on the longer sides of the rectangle area 2, while the two shorter right-angled sides of the first right-angled triangle area 21 and the second right-angled triangle area 22 are located on the shorter sides of the rectangle area 2. Therefore, the first right-angled triangle area 21 and the second right-angled triangle area 22 are symmetrical about the hypotenuse of the base fabric area 23. The right-angled triangular regions 22 form a symmetrical structure, therefore the first right-angled triangular region 21 and the second right-angled triangular region 22 are of equal size. This symmetrical structure increases the structural stability of the nonwoven fabric. The fibers in the first right-angled triangular region 21 and the second right-angled triangular region 22 are unidirectionally laid, while the oblique base fabric region 23 is cross-laid. Therefore, the fiber arrangement density in the first right-angled triangular region 21 and the second right-angled triangular region 22 is lower than that in the oblique base fabric region 23. Thus, when the first right-angled triangular region 21 and the second right-angled triangular region 22... When the first right-angled triangle 21 and the second right-angled triangle 22 are connected by the oblique base fabric 23, the structural stability between the first right-angled triangle 21 and the second right-angled triangle 22 is increased. At the same time, the fiber winding density is increased at the edges of the two oblique sides of the first right-angled triangle 21 and the second right-angled triangle 22. Thus, when the first right-angled triangle 21 and the second right-angled triangle 22 are wetted, the fiber edge surface absorbs water, but the fibers will not be squeezed in the oblique direction, thereby making the fibers loose and increasing the moisture resistance of the nonwoven fabric.

[0021] Base fabric area 1 uses unidirectional mesh laying and is located between two adjacent rectangular areas 2. One base fabric area 1 between the two adjacent rectangular areas 2 uses cross-laying, and the other base fabric area 1 between the two adjacent rectangular areas 2 uses unidirectional mesh laying. Therefore, when the first right-angled triangular area 21 and the second right-angled triangular area 22 use longitudinal unidirectional mesh laying, the longitudinal base fabric area 1 between the two adjacent rectangular areas 2 uses unidirectional mesh laying, and the transverse base fabric area 1 between the two adjacent rectangular areas 2 uses cross-laying. During the fabric weaving process, the transverse base fabric area 1 located between two adjacent rectangular areas 2 is laid in a unidirectional manner, while the longitudinal base fabric area 1 located between two adjacent rectangular areas 2 is laid in a cross-shaped manner. Since the rectangular areas 2 are arranged in a matrix and the base fabric areas 1 are arranged in a cross shape, when the first right-angled triangular area 21 and the second right-angled triangular area 22 are laid in a transverse unidirectional manner, the diagonal base fabric area 23 and the longitudinal base fabric area 1 are laid in a cross-shaped manner. Therefore, the diagonal base fabric area 23 is located between two adjacent longitudinal base fabric areas 1, forming a Z-shape with the longitudinal base fabric area 1. When the first right-angled triangular area 21 and the second right-angled triangular area 22 are laid in a unidirectional manner, the diagonal base fabric area 23 and the longitudinal base fabric area 1 are laid in a cross-shaped manner. When zone 22 is laid longitudinally, the oblique base fabric zone 23 and the transverse base fabric zone 1 are laid crosswise. Therefore, the oblique base fabric zone 23 is located between two adjacent transverse base fabric zones 1, forming a Z-shape between the oblique base fabric zone 23 and the transverse base fabric zone 1. This causes mutual restraint between base fabric zone 1 and oblique base fabric zone 23, thereby increasing the structural stability of the nonwoven fabric and strengthening the winding density of the edge fibers of the first right-angled triangular zone 21 and the second right-angled triangular zone 22. At the same time, because the oblique base fabric zone 23 and base fabric zone 1 form a Z-shape, the edges of the first right-angled triangular zone 21 and the second right-angled triangular zone 22 are both... Surrounded by base fabric region 1 and oblique base fabric region 23, because the first right-angled triangle region 21 and the second right-angled triangle region 22 are unidirectional webs while the base fabric region 1 is cross-laid, the fiber winding density of base fabric region 1 is greater than that of the first right-angled triangle region 21 and the second right-angled triangle region 22. Therefore, when the fabric gets wet, the fibers of the first right-angled triangle region 21 and the second right-angled triangle region 22 will not be squeezed towards the base fabric region 1, so that the fibers of the first right-angled triangle region 21 and the second right-angled triangle region 22 will not reduce the cohesion between fibers due to moisture absorption, thereby improving the wet strength of the nonwoven fabric.

[0022] Because the width of the oblique base fabric region 23 is greater than the width of the base fabric region 1, the fiber winding of the oblique base fabric region 23 is greater than that of the base fabric region 1. Therefore, the fiber winding density of the oblique base fabric region 23 is greater than that of the base fabric region 1. Furthermore, the oblique base fabric region 23 and the base fabric region 1 form a Z-shape, thus creating a triangular structure with reinforced and stable right-angled triangular regions formed by adjacent longitudinal or transverse sides of the base fabric region 1 through the oblique base fabric region 23. Because the oblique base fabric region 23 restrains the base fabric region 1, the structure of the base fabric region 1 remains stable. The ratio of the base side L to the height H of the first right-angled triangular region 21 to the second right-angled triangular region 22 is 1:0.6–1:1. Preferably, the ratio is 1:0.8. Therefore, the first right-angled triangular region 21 and the second right-angled triangular region 22 are connected by... The ratio of the two right-angled sides is close, so that the first right-angled triangle 21 and the second right-angled triangle 22 are uniform, and the structural stability between the longitudinal base fabric area 1 or the weft base fabric area 1 and the oblique base fabric area 23 is not too large or too small due to the difference in the ratio of the two right-angled sides. This would result in different forces between the longitudinal base fabric area 1 or the weft base fabric area 1 and the oblique base fabric area 23, thus causing structural instability between the base fabric area 1 and the oblique base fabric area 23. At the same time, when the first right-angled triangle 21 and the second right-angled triangle 22 are wet, the base fabric area 1, through the stability of the oblique base fabric area 23, increases the resistance to the internal fibers of the first right-angled triangle 21 and the second right-angled triangle 22 loosening towards the edge, so that the first right-angled triangle 21 and the second right-angled triangle 22 still maintain the original fiber cohesion after being wet, thereby increasing the strength of the fabric after moisture absorption.

[0023] Because the fiber winding density of the first right-angled triangle region 21 and the second right-angled triangle region 22 is lower than that of the oblique base fabric region 23, and because the fiber winding density of the first right-angled triangle region 21 and the second right-angled triangle region 22 is lower than that of the base fabric region 1, the difference in fiber winding density causes the first right-angled triangle region 21 and the second right-angled triangle region 22 to be higher than the base fabric region 1 and the oblique base fabric region 23. This causes the first right-angled triangle region 21 and the second right-angled triangle region 22 to form a protrusion, creating a height difference with the base fabric region and the oblique edge region. Therefore, when the fabric comes into contact with water, the first right-angled triangle region 21 and the second right-angled triangle region 22, due to their symmetrical structure, will... Moisture quickly flows back into the base fabric area, preventing moisture accumulation on the surfaces of the first right-angled triangle area 21 and the second right-angled triangle area 22. This prevents excessive moisture accumulation in the first right-angled triangle area 21 and the second right-angled triangle area 22 from reducing the friction between fibers. At the same time, the first right-angled triangle area 21 and the second right-angled triangle area 22 distribute moisture evenly through symmetry and guide the moisture to the oblique base fabric area 23 and the base fabric area 1, thereby improving the overall moisture resistance of the nonwoven fabric. When the nonwoven fabric is dry, the low fiber winding density and the raised shape of the first right-angled triangle area 21 and the second right-angled triangle area 22 increase the air permeability of the nonwoven fabric.

[0024] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A moisture-resistant nonwoven fabric, characterized in that, The system includes a base fabric area (1) and a rectangular area (2). The base fabric area (1) is located between two adjacent rectangular areas (2). The rectangular area (2) includes a first right-angled triangle area (21), a second right-angled triangle area (22), and a diagonal base fabric area (23). The first right-angled triangle area (21) and the second right-angled triangle area (22) are higher than the base fabric area (1). The first right-angled triangle area (21) and the second right-angled triangle area (22) are higher than the diagonal base fabric area (23). The first right-angled triangle area (21) and the second right-angled triangle area (22) are laid in a unidirectional manner. One of the base fabric areas (1) located between two adjacent rectangular areas (2) is laid in a cross-layout manner. The other base fabric area (1) located between two adjacent rectangular areas (2) is laid in a unidirectional manner. The diagonal base fabric area (23) is laid in a cross-layout manner.

2. The moisture-resistant nonwoven fabric according to claim 1, characterized in that, The rectangular areas (2) are arranged in a matrix, and the base fabric areas (1) are arranged in a cross shape.

3. The moisture-resistant nonwoven fabric according to claim 1, characterized in that, Along the length of the nonwoven fabric, the first right-angled triangular region (21) and the second right-angled triangular region (22) are arranged alternately.

4. The moisture-resistant nonwoven fabric according to claim 1, characterized in that, The oblique base fabric region (23) is located between the hypotenuse of the first right-angled triangle region (21) and the hypotenuse of the second right-angled triangle region (22), and the first right-angled triangle region (21) and the second right-angled triangle region (22) are symmetrical about the oblique base fabric region (23).

5. The moisture-resistant nonwoven fabric according to claim 1, characterized in that, The first right-angled triangle region (21) is the same size as the second right-angled triangle region (22).

6. The moisture-resistant nonwoven fabric according to claim 1, characterized in that, The width of the oblique base fabric region (23) is greater than the width of the base fabric region (1).

7. The moisture-resistant nonwoven fabric according to claim 1, characterized in that, The ratio of the base L to the height H of the first right-angled triangle region (21) and the second right-angled triangle region (22) is 1:0.6 to 1:

1.

8. The moisture-resistant nonwoven fabric according to claim 1, characterized in that, The edges of the first right-angled triangular region (21) and the second right-angled triangular region (22) are both surrounded by the base fabric region (1) and the oblique base fabric region (23).

9. The moisture-resistant nonwoven fabric according to claim 1, characterized in that, When the first right-angled triangular area (21) and the second right-angled triangular area (22) are longitudinally unidirectionally laid, the longitudinal base fabric area (1) located between two adjacent rectangular areas (2) is unidirectionally laid, and the transverse base fabric area (1) located between two adjacent rectangular areas (2) is cross-laid.

10. The moisture-resistant nonwoven fabric according to claim 1, characterized in that, When the first right-angled triangular area (21) and the second right-angled triangular area (22) are laid in a horizontal unidirectional manner, the horizontal base fabric area (1) located between two adjacent rectangular areas (2) is laid in a unidirectional manner, and the vertical base fabric area (1) located between two adjacent rectangular areas (2) is laid in a cross manner.

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