High-strength non-woven fabric
By forming a double U-shaped structure and arranging them in an alternating pattern during the production of nonwoven fabric, the problem of insufficient stress dispersion in multiple directions in traditional nonwoven fabrics is solved, achieving higher tensile strength and air permeability.
Patent Information
- Application Number
- CN202520455723.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-17
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-03-17
AI Technical Summary
Traditional nonwoven fabrics have limited ability to disperse multi-directional stress during stretching or shearing, which can easily lead to localized tearing, and they also have insufficient air permeability.
By needle-punching fibers in a specific manner during the nonwoven fabric production process to form a double U-shaped structure, and arranging them obliquely, the balance and support of the fibers in different directions are increased, thereby improving tensile strength and air permeability.
It enhances the tensile strength of nonwoven fabrics in multiple directions, reduces localized tearing, and improves overall strength and breathability.
Smart Images
Figure CN223866908U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of non - woven fabrics more particularly, relate to a kind of high-strength non - woven fabrics. BACKGROUND
[0002] The linear or grid structure of the conventional non-woven fabric is limited in dispersing stress in multiple directions when stretched or sheared, thus easily leading to local tearing. SUMMARY
[0003] The utility model discloses a kind of high-strength non-woven fabrics, which is produced by needle punching fibers in a specific way during production, forming a double-U-shaped arrangement structure, and the double-U-shaped structure is arranged obliquely, so that the non-woven fabric can be more balanced in different directions, reducing the risk of local tearing.
[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a kind of high-strength non-woven fabrics, including base cloth area and double U-shaped area, along the width direction of the fabric, the double U-shaped area is arranged obliquely at an angle α, the double U-shaped area includes a first U-shaped area and a second U-shaped area, along the length direction of the fabric, the first U-shaped area and the second U-shaped area are arranged alternately, the endpoint of the first U-shaped area is inserted into the opening of the second U-shaped area, and the endpoint of the second U-shaped area is inserted into the opening of the first U-shaped area, and the first U-shaped area and the second U-shaped area are higher than the base cloth area.
[0005] The utility model is further provided that the oblique arrangement angle α of the double U-shaped area is 10-20 degrees.
[0006] The utility model is further provided that the first U-shaped area and the second U-shaped area are opened along the width direction of the fabric, and the opening directions of the first U-shaped area and the second U-shaped area are opposite.
[0007] The utility model is further provided that the width N of the first U-shaped area is equal to the width M of the second U-shaped area.
[0008] The utility model is further provided that the height H of the protrusion of the first U-shaped area and the second U-shaped area is 10-30% of the thickness of the non-woven fabric.
[0009] The present invention is further configured such that the radius of the U-shaped arc of the first U-shaped area and the second U-shaped area is 6mm-12mm.
[0010] The present invention is further configured such that, along the length of the fabric, the interval L between two adjacent double U-shaped areas is 2mm-4mm, and the interval D between the first U-shaped area and the second U-shaped area is 2mm-4mm.
[0011] The present invention is further configured such that, along the fabric width direction, one side of the midpoint of the arc of each first U-shaped area is opposite to the endpoint of the first U-shaped area, and the other side of the midpoint of the arc of each first U-shaped area is opposite to the endpoint of the second U-shaped area.
[0012] The present invention is further configured such that, along the fabric width direction, one side of the arc center of each second U-shaped area is opposite to the endpoint of the second U-shaped area, and the other side of the arc center of each second U-shaped area is opposite to the endpoint of the first U-shaped area.
[0013] The present invention is further configured such that the distance C from the midpoint of the arc of the first U-shaped region to the endpoint of the second U-shaped region is equal to the distance E from the endpoint of the first U-shaped region to the midpoint of the arc of the second U-shaped region.
[0014] In summary, this utility model has the following beneficial effects:
[0015] By needle-punching fibers during the production process of nonwoven fabric, a double U-shaped structure is formed, with the double U-shapes arranged obliquely. This makes the nonwoven fabric's performance more balanced in different directions, reducing localized phenomena. Furthermore, the double U-shaped structure allows for more even stress distribution in different directions, thus reducing stress and increasing the tensile strength of the nonwoven fabric. Additionally, each U-shaped opening is along the width of the nonwoven fabric, and the two U-shapes are arranged in an alternating manner, allowing the nonwoven fabric to support each other in multiple directions. This provides resistance to stress from multiple directions, improving the overall strength of the nonwoven fabric. The double U-shaped protrusions also increase the breathability of the nonwoven fabric. 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] Figure 3 for Figure 1 Enlarged view of point B in the image.
[0019] Reference numerals: base fabric area 1, double U-shaped area 2, first U-shaped area 21, second U-shaped area 22. Detailed Implementation
[0020] 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.
[0021] like Figure 1 As shown in Figure 3, this embodiment discloses a high-strength nonwoven fabric. The fibers are oriented and arranged along a U-shaped direction through processes such as needle punching and hot pressing, thereby forming a nonwoven fabric including a base fabric area 1 and a double U-shaped area 2. Along the width of the fabric, the double U-shaped areas 2 are arranged obliquely at an angle α. The angle α of the oblique arrangement of the double U-shaped areas 2 is 10 degrees to 20 degrees. Preferably, the angle α of the oblique arrangement of the double U-shaped areas 2 is 15 degrees, so that the nonwoven fabric has good stress resistance in multiple directions. Furthermore, the oblique arrangement of the double U-shaped areas 2 can change the stress distribution of the nonwoven fabric, thereby reducing the phenomenon of local stress concentration and tearing.
[0022] The double U-shaped area 2 includes a first U-shaped area 21 and a second U-shaped area 22. Along the length of the fabric, the first U-shaped area 21 and the second U-shaped area 22 are arranged alternately. The end point of the first U-shaped area 21 is inserted into the opening of the second U-shaped area 22, and the end point of the second U-shaped area 22 is inserted into the opening of the first U-shaped area 21. Both the first U-shaped area 21 and the second U-shaped area 22 are open along the width of the nonwoven fabric, but the opening directions of the first U-shaped area 21 and the second U-shaped area 22 are set to be opposite. Because the double U-shaped areas 2 are arranged at a 15-degree angle, the first U-shaped area 21 and the second U-shaped area 22 are also arranged at a 15-degree angle. This makes the nonwoven fabric more evenly resistant to stress in multiple directions, thus enabling the nonwoven fabric to maintain good strength and stability in all directions.
[0023] Because in the process of needle punching and hot pressing, the first U-shaped area 21 and the second U-shaped area 22 are arranged into U-shaped patterns of the same size, the width N of the first U-shaped area 21 and the width M of the second U-shaped area 22 are equal after the non-woven fabric is formed, and the U-shaped radius of the first U-shaped area 21 and the second U-shaped area 22 is 6mm-12mm, preferably, the U-shaped radius of the first U-shaped area 21 and the second U-shaped area 22 is 10mm, because the directions of the first U-shaped area 21 and the second U-shaped area 22 are opposite but the sizes are equal, the non-woven fabric can disperse stress in all directions through the staggered U-shaped structure, and because the sizes of the first U-shaped area 21 and the second U-shaped area 22 are equal, the non-woven fabric can support each other in all directions, thereby increasing the resistance to external stress in all directions, thereby improving the overall strength of the non-woven fabric.
[0024] And along the length direction of the fabric, the interval distance L between the two adjacent double U-shaped areas 2 is 2mm-4mm, preferably, the interval distance L between the two adjacent double U-shaped areas 2 is 2.8mm, the interval distance D between the first U-shaped area 21 and the second U-shaped area 22 is 2mm-4mm, preferably, the interval distance D between the first U-shaped area 21 and the second U-shaped area 22 is 2.8mm, and the distance C from the midpoint of the arc of the first U-shaped area 21 to the end point of the second U-shaped area 22 is equal to the distance E from the end point of the first U-shaped area 21 to the midpoint of the arc of the second U-shaped area 22, so the distances between the first U-shaped area 21 and the second U-shaped area 22 in all directions are equal, thereby making the non-woven fabric more uniform in resisting external stress in all directions, and also uniformly dispersing stress, thereby reducing local stress concentration of the non-woven fabric, and maintaining good stability in the longitudinal and transverse directions.
[0025] Along the width direction of the fabric, one side of the midpoint of the arc of each first U-shaped area 21 is opposite to the end point of the first U-shaped area 21, and the other side of the midpoint of the arc of each first U-shaped area 21 is opposite to the end point of the second U-shaped area 22, along the width direction of the fabric, one side of the center of the arc of each second U-shaped area 22 is opposite to the end point of the second U-shaped area 22, and the other side of the center of the arc of each second U-shaped area 22 is opposite to the end point of the first U-shaped area 21, so that the insertion position of the second U-shaped area 22 is located at the center of the first U-shaped area 21, and the insertion position of the first U-shaped area 21 is located at the center of the second U-shaped area 22, therefore, when the non-woven fabric is stretched, the two U-shaped areas can better restore to the original state after being subjected to external stress, thereby when the non-woven fabric has a small crack, the staggered two U-shaped areas can hinder the further expansion of the crack, thereby improving the toughness of the non-woven fabric.
[0026] The overall thickness of the non-woven fabric is 3mm, the first U-shaped area 21 and the second U-shaped area 22 are higher than the base fabric area 1, and the protruding height H of the first U-shaped area 21 and the second U-shaped area 22 is 10%-30% of the thickness of the non-woven fabric, preferably, the protruding height H of the first U-shaped area 21 and the second U-shaped area 22 is 17% of the thickness of the non-woven fabric, thus forming protrusions at the double U-shaped area 2, thus increasing the air flow space of the first U-shaped area 21 and the second U-shaped area 22, and because the first U-shaped area 21 and the second U-shaped area 22 are staggered, thus forming a concave-convex path between the double U-shaped area 2 and the base fabric area 1, thus promoting the flow of air, thereby increasing the air permeability of the non-woven fabric and keeping the non-woven fabric dry.
[0027] The above is only the preferred embodiment of the present application, the protection scope of the present application is not limited to the above-mentioned embodiments, any technical solution belonging to the idea of the present application is within the protection scope of the present application. It should be noted that for ordinary skilled in the art, some improvements and decorations without departing from the principles of the present application, these improvements and decorations should also be considered as the protection scope of the present application.
Claims
1. A high-strength nonwoven fabric, characterized in that, The fabric includes a base fabric area (1) and a double U-shaped area (2). Along the fabric width direction, the double U-shaped areas (2) are arranged obliquely at an angle α. The double U-shaped areas (2) include a first U-shaped area (21) and a second U-shaped area (22). Along the fabric length direction, the first U-shaped area (21) and the second U-shaped area (22) are arranged alternately. The endpoint of the first U-shaped area (21) is inserted into the opening of the second U-shaped area (22), and the endpoint of the second U-shaped area (22) is inserted into the opening of the first U-shaped area (21). The first U-shaped area (21) and the second U-shaped area (22) are higher than the base fabric area (1).
2. The high-strength nonwoven fabric according to claim 1, characterized in that, The angle α of the oblique arrangement of the double U-shaped region (2) is 10 degrees to 20 degrees.
3. The high-strength nonwoven fabric according to claim 1, characterized in that, The first U-shaped area (21) and the second U-shaped area (22) are open along the width direction of the nonwoven fabric, and the opening directions of the first U-shaped area (21) and the second U-shaped area (22) are opposite.
4. The high-strength nonwoven fabric according to claim 1, characterized in that, The width N of the first U-shaped region (21) is equal to the width M of the second U-shaped region (22).
5. The high-strength nonwoven fabric according to claim 1, characterized in that, The protrusion height H of the first U-shaped area (21) and the second U-shaped area (22) is 10%-30% of the thickness of the nonwoven fabric.
6. The high-strength nonwoven fabric according to claim 1, characterized in that, The radius of the U-shaped arc of the first U-shaped area (21) and the second U-shaped area (22) is 6mm-12mm.
7. The high-strength nonwoven fabric according to claim 1, characterized in that, Along the length of the fabric, the distance L between two adjacent double U-shaped areas (2) is 2mm-4mm, and the distance D between the first U-shaped area (21) and the second U-shaped area (22) is 2mm-4mm.
8. The high-strength nonwoven fabric according to claim 1, characterized in that, Along the fabric width direction, one side of the midpoint of the arc of each first U-shaped area (21) is opposite to the endpoint of the first U-shaped area (21), and the other side of the midpoint of the arc of each first U-shaped area (21) is opposite to the endpoint of the second U-shaped area (22).
9. A high-strength nonwoven fabric according to claim 1, characterized in that, Along the fabric width direction, one side of the arc center of each second U-shaped area (22) is opposite to the endpoint of the second U-shaped area (22), and the other side of the arc center of each second U-shaped area (22) is opposite to the endpoint of the first U-shaped area (21).
10. A high-strength nonwoven fabric according to claim 1, characterized in that, The distance C from the midpoint of the arc of the first U-shaped area (21) to the endpoint of the second U-shaped area (22) is equal to the distance E from the endpoint of the first U-shaped area (21) to the midpoint of the arc of the second U-shaped area (22).