Non-woven fabric
By using a three-layer fiber structure design to form a hollow and conductive mesh, the problem of nonwoven fabrics having good breathability but poor warmth retention is solved, thus improving both warmth retention and antistatic properties.
Patent Information
- Application Number
- CN202520123587.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-20
- Publication Date
- 2025-12-19
- Estimated Expiration
- 2035-01-20
AI Technical Summary
The existing nonwoven fabrics have the problem of good breathability but poor warmth retention.
It adopts a three-layer fiber structure, in which the outer and inner layers form a hollow structure through a specific method, the middle layer has a part of the fiber not wrapped, the middle layer uses conductive fibers to form a conductive mesh, and cotton fibers increase moisture absorption. The three layers of fibers are needle punched to form a non-woven fabric.
It improves the warmth and antistatic properties of nonwoven fabrics while maintaining breathability, and enhances the durability and antistatic performance of nonwoven fabrics.
Smart Images
Figure CN223686118U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of non - woven fabrics more particularly, relate to a kind of non - woven fabrics. BACKGROUND
[0002] Because non - woven fabric is often formed by fiber winding through needle punching process, thus forming non - woven fabric, there is no interlacing of warp and weft yarn, and there is no weaving of longitudinal yarn or weft yarn, so that the pores between fibers are not fixed, thus the air permeability of non - woven fabric is good compared with knitting or weaving, and at the same time, because the pores of non - woven fabric are more, air and body heat can easily flow through the pores, thus leading to the decline of warmth retention. SUMMARY
[0003] The utility model discloses a kind of non - woven fabrics, and the purpose is to overcome the deficiency of prior art, and the non - woven fabric is formed by three layers of fiber laying and then puncturing, surface layer and inner layer are full laying, and the middle layer is laid with fiber in a specific way, so that part of area of middle layer does not wind fiber, thus hollow is formed between surface layer and inner layer, and the existence of hollow reduces the average density of middle layer, so that middle layer can increase bulkiness, so that the pores between fibers can absorb and store air, and hollow area can also absorb and store more air, so as to improve the warmth retention of fabric, and the connecting place between mesh of middle layer is made of conductive fiber, so as to form conductive mesh by needle punching, and the rest area of middle layer is made of cotton fiber, so that the hygroscopicity of non - woven fabric is increased by cotton fiber, so as to reduce the generation of static electricity, and the conductive mesh formed by conductive fiber can neutralize electric charge, and surface layer and inner layer are formed inside and outside middle layer respectively, so as to protect the conductive mesh of non - woven fabric from being easily damaged.
[0004] To achieve the above object, the utility model adopts the following technical scheme: a kind of non - woven fabrics, including surface layer, inner layer and middle layer, the middle layer includes first area, second area and third area, the first area includes first mesh and first connecting place, the second area includes base cloth area and square area, the square area includes second mesh and second connecting place, the third area includes third mesh, third interface connecting place and fourth connecting place, hollow is formed between the surface layer and the inner layer at the first mesh, hollow is formed between the surface layer and the inner layer at the second mesh, hollow is formed between the surface layer and the inner layer at the third mesh, the surface layer, the inner layer and the middle layer are connected by the base cloth area.
[0005] The utility model is further provided, the second area is square, the left and right sides of the second area are connected with the third area, and the upper and lower sides of the second area are connected with the first area.
[0006] The square grid area is located at the center of the base cloth area.
[0007] The second mesh hole is hexagonal, four second mesh holes are taken as a group along the width direction of the non-woven fabric, and every four second mesh holes are alternately arranged.
[0008] The third mesh hole is fan-shaped, two upper and lower adjacent third mesh holes are symmetrically arranged along the length direction of the non-woven fabric, and the two upper and lower adjacent third mesh holes are connected through the third connecting part.
[0009] The fourth connecting part is trapezoidal, seven third mesh holes and six third connecting parts are taken as a group, and every two adjacent groups are connected through the fourth connecting part.
[0010] The first mesh hole and the first connecting part are alternately arranged along the width direction of the fabric.
[0011] The upper bottom edge of the fourth connecting part is connected with the first connecting part, and the lower bottom edge of the fourth connecting part is connected with the first connecting part.
[0012] The first mesh hole is smaller than the second mesh hole, and the second mesh hole is smaller than the third mesh hole.
[0013] The surface layer and the inner layer adopt polyester fibers, the first connecting part, the second connecting part and the third connecting part adopt conductive fibers, and the base cloth area and the fourth connecting part adopt cotton fibers.
[0014] In conclusion, the utility model has the following beneficial effects:
[0015] By laying three layers of fibers in different web configurations and simultaneously needle-punching them, a mesh is formed in the middle layer. The mesh areas create a hollow space between the outer and inner layers. This hollow space not only evens out the fiber density of the middle layer, increasing its bulkiness, but also allows for the storage of still air between the fibers. The increased space for storing still air further enhances the nonwoven fabric's warmth. The middle layer incorporates conductive fibers in some areas, forming a conductive mesh that increases the fabric's conductivity. Additionally, the use of cotton fibers in other areas allows for a slight increase in moisture content, improving the fabric's absorbency and reducing static electricity. The outer and inner layers have the same porosity, so the porous structure of the three-layer needle-punching process facilitates air and moisture circulation. As the outer and inner layers remove moisture absorbed by the cotton fibers in the middle layer, they also evaporate electrical charges. Furthermore, the three-layer fiber arrangement, through needle-punching, forms a conductive mesh in the outer and inner layers that protects the middle layer. 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 A cross-sectional view along the B-B direction in the image;
[0019] Figure 4 for Figure 1 Enlarged view of point C in the image;
[0020] Figure 5 for Figure 1 Enlarged view of point D in the image.
[0021] Reference numerals: Surface layer 1, Inner layer 2, Middle layer 3, First region 31, First mesh 311, First connection 312, Second region 32, Base fabric region 321, Grid region 322, Second mesh 3221, Second connection 3222, Third region 33, Third connection 331, Third mesh 332, Fourth connection 333. Detailed Implementation
[0022] 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.
[0023] As Figure 1 The embodiment shown in FIG. 5 discloses a non-woven fabric, which comprises a surface layer 1, a back layer 2 and an intermediate layer 3, the intermediate layer 3 comprises a first area 31, a second area 32 and a third area 33, the first area 31 comprises a first mesh hole 311 and a first connecting part 312, along the width direction of the fabric, the first mesh hole 311 and the first connecting part 312 are arranged alternately. Referring to Figure 5 , the width of the first mesh hole 311 is greater than that of the first connecting part 312, so when the surface layer 1, the back layer 2 and the intermediate layer 3 are laid by the fiber needle punching, the hollow is formed between the surface layer 1 and the back layer 2 at the first mesh hole 311, and because the first mesh hole 311 and the first connecting part 312 are both rectangular, the structure of the rectangular cavity formed between the surface layer 1 and the back layer 2 at the first mesh hole 311 is relatively stable, which can not only better withstand external pressure and deformation, but also effectively control the direction and rate of heat transfer, and the air convection in the rectangular cavity can adsorb and store static air, thereby increasing the warmth of the non-woven fabric.
[0024] The second area 32 comprises a base cloth area 321 and a check area 322, because the check area 322 is located at the center of the base cloth area 321, so that the second area 32 can disperse external force or make the second area 32 bear force evenly when it bears external pressure, so that the second area 32 will not produce the phenomenon of fiber fracture or deformation. The check area 322 comprises a second mesh hole 3221 and a second connecting part 3222, referring to Figure 4Because the second region 32 is square and the second mesh hole 3221 is hexagonal, the second mesh hole 3221 is formed in the largest range in the second region 32, so along the width direction of the non-woven fabric, four second mesh holes 3221 are arranged as a group, and along the length direction of the non-woven fabric, every four second mesh holes 3221 are alternately arranged, so that the second mesh hole 3221 can be maximally laid in the square area 322, and the alternate arrangement can improve the space utilization rate of the square area 322, so that when the fibers of the surface layer 1, the back layer 2 and the middle layer 3 form the non-woven fabric, a hollow is formed between the surface layer 1 and the back layer 2 at the second mesh hole 3221, and because the second mesh hole 3221 is hexagonal, a hexagonal cavity is formed between the surface layer 1 and the back layer 2 at the second mesh hole 3221, which can form the uniformity of heat transfer, reduce the local concentration of heat, make the heat of the base fabric area 321 around the square area 322 and the second connection 3222 inside the square area 322 more uniform, so that when the fibers of the surface layer 1, the back layer 2 and the middle layer 3 form the non-woven fabric, the overall warmth is better, and the hexagonal cavity can better accommodate air, reduce air convection, form a stable static air adsorption and storage area, thereby improving the overall warmth, and the structure of the hexagonal cavity is stable, so as to reduce the damage of the non-woven fabric during washing and airing after the non-woven fabric is used as a down lining, so that the non-woven fabric still maintains the warmth of the non-woven fabric after being used for many times.
[0025] The third region 33 includes a third mesh hole 332, a third connection 331 and a fourth connection 333, and a hollow is formed between the surface layer 1 and the back layer 2 at the third mesh hole 332, which is described in detail in the following. Figure 5 Because the third mesh hole 332 is a fan shape, and along the length direction of the non-woven fabric, two adjacent third mesh holes 332 are symmetrically arranged, and the two adjacent third mesh holes 332 are connected by the third connection 331, because the third mesh hole 332 is symmetrically arranged, and the third mesh hole 332 is a fan shape, so the structure of the third mesh hole 332 is more stable, and the third region 33 is more balanced when bearing external pressure, which can disperse external force in multiple directions, thereby prolonging the service life of the non-woven fabric, and a fan-shaped cavity is formed between the surface layer 1 and the back layer 2 at the third mesh hole 332, which can reduce the convection heat transfer, reduce the convection of air and increase the warmth of the non-woven fabric, and the fan-shaped cavity can effectively control the direction and speed of heat transfer. Figure 5, the fourth connection 333 is trapezoidal, so along the length direction of the non-woven fabric, 7 third meshes 332 and 6 third connections 331 form a group, and the fourth connection 333 connects between every two adjacent groups, so 7 third meshes 332 and 6 third connections 331 form a group to connect the second area 32, so the left and right sides of the second area 32 are connected with the third area 33, and the left and right sides of the base cloth area 321 in the second area 32 form 3 radians and 4 radians respectively, which not only makes the radian of the connection between the third area 33 and the second area 32 can adapt to the pressure and deformation of external force, so that the fibers of the non-woven fabric form a curved shape, so that the fibers at the connection between the third area 33 and the second area 32 will not easily break under external force, while the extension of the connection between the third area 33 and the second area 32 can be increased. Because the fourth connection 333 is trapezoidal, the two oblique sides of the fourth connection 333 connect the third mesh 332, and the left and right sides of the fourth connection 333 are connected with the first connection 312, the upper base of the fourth connection 333 is connected with the first connection 312, and the lower base of the fourth connection 333 is connected with the first connection 312, so the fourth connection 333 can help optimize the external force stretching of the first area 31 while adapting to the external force of the second area 32 and the third area 33, and the left and right sides of the fourth connection 333, and the left and right sides of the second area 32 are connected with the first area 31, so that the first area 31, the second area 32 and the third area 33 form mutual restraint and adjustment, thereby improving the structural stability of the whole non-woven fabric and increasing the durability of the non-woven fabric.
[0026] Because the surface layer 1, the inner layer 2 and the middle layer 3 are connected through the base cloth area 321, and the first mesh 311 of the middle layer 3 is smaller than the second mesh 3221, and the second mesh 3221 is smaller than the third mesh 332, so after the three layers are connected, the rectangular cavity formed between the surface layer 1 and the inner layer 2 at the first mesh 311 is smaller than the hexagonal cavity formed between the surface layer 1 and the inner layer 2 at the second mesh 3221, and the hexagonal cavity formed between the surface layer 1 and the inner layer 2 at the second mesh 3221 is smaller than the fan-shaped cavity formed between the surface layer 1 and the inner layer 2 at the third mesh 332, so different sizes of cavities can form a space for air retention in the area, and can effectively reduce the transfer of heat, thereby improving the heat preservation performance of the non-woven fabric, and different sizes of cavities can accommodate different amounts of still air, thereby increasing the flexibility of the heat preservation performance of the non-woven fabric, and different sizes of cavities and connection are staggered, thereby forming a more stable structure, enhancing the overall strength and anti-deformation ability of the non-woven fabric, and the presence of different sizes of cavities makes the average density of the middle layer 3 lower than that of the surface layer 1 and the inner layer 2, so the fibers in the middle layer 3 are more fluffy, thereby allowing the fluffy fibers to store a large amount of still air, thereby further increasing the warmth of the non-woven fabric.
[0027] The surface layer 1 and the inner layer 2 adopt polyester fibers, the first connecting position 312, the second connecting position 3222 and the third connecting position 331 adopt conductive fibers, the base cloth area 321 and the fourth connecting position 333 adopt cotton fibers, therefore, the conductive network is formed at the first connecting position 312, the second connecting position 3222 and the third connecting position 331 of the middle layer 3, so that the static electricity generated by the friction of the fibers of the surface layer 1 and the inner layer 2 can be quickly eliminated, so that the non-woven fabric increases the antistatic property, meanwhile, because the base cloth area 321 and the fourth connecting position 333 adopt cotton fibers, because the public moisture regain of cotton is 8.5%, and the base cloth area 321 and the fourth connecting position 333 are fiber needle-punched and wound in many places, therefore, the hygroscopicity of the base cloth area 321 and the fourth connecting position 333 is good, so that the non-woven fabric can take away part of the charges generated by the surface layer 1 and the inner layer 2 after absorbing moisture and evaporating, so that the non-woven fabric increases the antistatic property, and the conductive fibers are located in the middle layer 3, therefore, the surface layer 1 and the inner layer 2 can form the protection of the conductive fibers, so that the non-woven fabric will not be damaged in the washing process, and the durability of the non-woven fabric is increased.
[0028] The preferred embodiments of the present application have been described above, the protection scope of the present application is not limited to the above-mentioned embodiments, any technical scheme falling within the idea of the present application belongs to 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 principle of the present application can also be considered as the protection scope of the present application.
Claims
1. A nonwoven fabric, characterized by, The nonwoven fabric comprises a surface layer (1), a back layer (2) and a middle layer (3), the middle layer (3) comprises a first area (31), a second area (32) and a third area (33), the first area (31) comprises a first mesh (311) and a first connecting part (312), the second area (32) comprises a base cloth area (321) and a square area (322), the square area (322) comprises a second mesh (3221) and a second connecting part (3222), the third area (33) comprises a third mesh (332), a third connecting part (331) and a fourth connecting part (333), the surface layer (1) and the back layer (2) form a hollow at the first mesh (311), the surface layer (1) and the back layer (2) form a hollow at the second mesh (3221), the surface layer (1) and the back layer (2) form a hollow at the third mesh (332), the surface layer (1), the back layer (2) and the middle layer (3) are connected through the base cloth area (321).
2. The nonwoven fabric according to claim 1, wherein The second area (32) is a square, the left and right sides of the second area (32) are connected with the third area (33), and the upper and lower sides of the second area (32) are connected with the first area (31).
3. The nonwoven fabric according to claim 1, wherein The square area (322) is located at the center of the base cloth area (321).
4. The nonwoven fabric according to claim 1, wherein The second mesh (3221) is a hexagon, and four second meshes (3221) form a group along the width direction of the nonwoven fabric, and every four second meshes (3221) are alternately arranged.
5. The nonwoven fabric according to claim 1, wherein The third mesh (332) is a sector, and two adjacent third meshes (332) are symmetrically arranged along the length direction of the nonwoven fabric, and the two adjacent third meshes (332) are connected through the third connecting part (331).
6. The nonwoven fabric according to claim 1, wherein The fourth connecting part (333) is a trapezoid, and seven third meshes (332) and six third connecting parts (331) form a group, and every two adjacent groups are connected through the fourth connecting part (333).
7. The nonwoven fabric according to claim 1, wherein The first mesh (311) and the first connecting part (312) are alternately arranged along the width direction of the fabric.
8. The nonwoven fabric according to claim 1, wherein The upper bottom side of the fourth connecting part (333) is connected with the first connecting part (312), and the lower bottom side of the fourth connecting part (333) is connected with the first connecting part (312).
9. The nonwoven fabric according to claim 1, wherein The first mesh (311) is smaller than the second mesh (3221), and the second mesh (3221) is smaller than the third mesh (332).
10. The nonwoven fabric according to claim 1, wherein The surface layer (1) and the back layer (2) are made of polyester fiber, the first connecting part (312), the second connecting part (3222) and the third connecting part (331) are made of conductive fiber, and the base cloth area (321) and the fourth connecting part (333) are made of cotton fiber.