Tear-resistant non-woven fabric

Abstract

The utility model discloses a tear-resistant non-woven fabric which comprises a first area and a second area, the first area comprises first wave areas and second wave areas, the first wave areas and the second wave areas are alternately arranged in the breadth direction of the non-woven fabric, and the first wave areas and the second wave areas are symmetrically arranged. The wave crest of the first wave area is far away from the wave crest of the second wave area, the wave trough of the first wave area is connected with the wave trough of the second wave area, and the second area is located in the center defined by the first wave area and the second wave area. According to the utility model, the fibers are in a bending state during lapping, after the fibers are mutually staggered and wound, the bending structures of the fibers are increased, and the contact points and cohesive force of the fibers are increased among the bent fibers, so that the fiber structure is tighter, and the bent fiber structure not only can better disperse external force, but also can be better dispersed; meanwhile, due to the fact that the bent fibers are different in angle after being mutually wound, concentration of local stress is reduced, and the non-woven fabric is more resistant to tearing in the using process.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of non - woven fabrics more particularly, relate to a kind of tear -resistant non -woven fabrics. BACKGROUND

[0002] Non-woven fabric is often laid flat or cross-laid fiber, and then the fiber is formed into non-woven fabric by needle punching or hydroentangling process. However, whether laid flat or cross-laid, the fiber is in a straight state. Therefore, when the fiber is wound into non-woven fabric, the entanglement of the fiber is relatively small, but the fiber arrangement is relatively tight, which makes the non-woven fabric lack sufficient bending degree, so that the strength of the non-woven fabric in the fiber direction is low, and the non-woven fabric is easily torn from the right angle direction. SUMMARY

[0003] The utility model aims at overcoming the deficiency of prior art, providing a kind of tear -resistant non -woven fabrics, by keeping the fiber laying structure of non-woven fabric originally, and change the straight state of fiber, make fiber form bending state when laying, and by needle punching process etc. make fiber between each other interlaced and entangled, further increase the bending structure of fiber, the contact point and the cohesive force of fiber between the bending fiber are increased, so that the fiber structure is more compact, therefore the bending fiber structure not only can better disperse external force, simultaneously because the angle of mutual entanglement of bending fiber is not one, therefore not only reduce the concentration of local stress, and make non-woven fabric more resistant to tear in the process of use, thereby increase the toughness of non-woven fabric, simultaneously by specific arrangement, form protruding square in the bending range of non-woven fabric finished product, therefore form more micropore and interstice, thereby improve the air permeability and loftiness of non-woven fabric.

[0004] To achieve the above object, the utility model adopts the following technical scheme: a kind of tear -resistant non -woven fabrics, including first area and second area, the first area includes first wave area and second wave area, the first wave area and the second wave area are alternately arranged along the width direction of non-woven fabric, the first wave area and the second wave area are symmetrically arranged, the wave crest of the first wave area is away from the wave crest of the second wave area, the wave trough of the first wave area is connected to the wave trough of the second wave area, and the second area is located in the center surrounded by the first wave area and the second wave area.

[0005] The utility model is further provided, and the second area includes square area and connecting area, and the square area and the connecting area are alternately arranged.

[0006] The utility model is further provided, and the second area is diamond-shaped as a whole, one of the diagonal lines of the second area includes six square areas, and one of the diagonal lines of the second area includes five square areas.

[0007] The utility model further sets up, 6 the square area is in the diagonal line of close to the first wave area wave trough with the second wave area wave trough's connection, 5 the square area is in the diagonal line of one end with the first wave area's wave crest is connected, 5 the square area is in the diagonal line of the other end with the second wave area's wave crest is connected.

[0008] The utility model further sets up, the width of square area is greater than the width of first wave area, the width of square area is greater than the width of second wave area, the width of first wave area with second wave area is greater than the width of connecting area.

[0009] The utility model further sets up, square area is higher than connecting area, first wave area with second wave area is higher than connecting area, the height of first wave area with second wave area is same with the height of square area.

[0010] The utility model further sets up, first area adopts polypropylene fibre, second area adopts polyester fibre.

[0011] The utility model further sets up, the fibre of first area is parallel, the fibre of second area is crossed, and the fibre of first area with second area is all wave structure.

[0012] Summarized above, the utility model has following beneficial effect:

[0013] By adopting the fiber laying way of specific non-woven fabric, and the straight state of fiber is wound to change to the curved state of fiber, so that the fiber is interlaced and wound after the process such as needle punching, the curved structure of fiber is further increased, the contact points and the cohesion between the fibers are increased by the winding of the curved fiber, so that the fiber structure can be more compact, and when the curved fiber structure is subjected to tensile or bending load, the fibers can more evenly share stress, reduce the possibility of fiber breakage, thereby improve the toughness and anti-deformation ability, and the curved fiber structure is wound compared to the straight fiber structure, the micropores and voids formed by the winding are more, so that the bulkiness of the non-woven fabric is increased, and the convex block is formed in the curved range in the non-woven fabric product, the contact area of the non-woven fabric is reduced, thereby improving the air permeability of the non-woven fabric. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the structure schematic view of one kind anti-tear non-woven fabric in the embodiment of the utility model;

[0015] Figure 2 It is the structure schematic view of one kind anti-tear non-woven fabric in the embodiment of the utility model; Figure 1 It is the structure schematic view of one kind anti-tear non-woven fabric in the embodiment of the utility model;

[0016] Figure 3 is Figure 1 is an enlarged view of A in

[0017] Figure 4 is a fiber laying schematic of a first region of an anti-tear non-woven fabric in this embodiment;

[0018] Figure 5 is a fiber laying schematic of a second region of an anti-tear non-woven fabric in this embodiment.

[0019] Reference signs: first region 1, first wave region 11, second wave region 12, second region 2, square region 21, connecting region 22. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0021] As Figure 1 shown in FIG. 5, the anti-tear non-woven fabric disclosed in this embodiment includes a first region 1 and a second region 2. The first region 1 adopts polypropylene fibers, and the second region 2 adopts polyester fibers. The polypropylene fibers and the polyester fibers are formed by mechanical bending processing, and the fibers are laid in a specific manner, so that the fibers in the first region 1 and the second region 2 are all in a wave structure. The fibers in the first region 1 are parallel, and the fibers in the second region 2 are crossed. Therefore, the fibers in the first region 1 are laid flat, and the fibers in the second region 2 are laid in a cross pattern. Therefore, with reference to Figure 4 FIG. 5 is a fiber laying structure of the non-woven fabric in this embodiment. The first region 1 and the second region 2 are used to form the non-woven fabric by needle punching and other processes. Because the first region 1 and the second region 2 are used to form the non-woven fabric by needle punching and other processes, with reference to Figure 1 FIG. 3 is a structure schematic diagram of the finished non-woven fabric in this embodiment, in combination with Figure 4 FIG. 5 and Figure 1 In the non-woven fabric formed in this embodiment, the fibers are still in a curved shape, so that the fiber web can be more balanced in the longitudinal and transverse directions, reduce the strength difference caused by fiber arrangement, and because the strength distribution is divided equally, the non-woven fabric can withstand external forces in all directions, reduce the weak points caused by directionality, and thus improve the anti-tear performance of the non-woven fabric.

[0022] The first area 1 includes the first wave area 11 and the second wave area 12, the first wave area 11 and the second wave area 12 are arranged alternately along the width direction of the non-woven fabric, the first wave area 11 and the second wave area 12 are symmetrically arranged, the wave crest of the first wave area 11 is away from the wave crest of the second wave area 12, and the wave trough of the first wave area 11 is connected to the wave trough of the second wave area 12, because the first wave area 11 and the second wave area 12 both present a wave structure, and the fibers in the first area 1 are all curved, and the curved fibers are straightly laid, therefore the first wave area 11 and the second wave area 12 can effectively disperse external force through the wave crest and the wave trough, so that the stress is more evenly distributed on the surface of the non-woven fabric, thereby reducing local stress concentration and reducing the tear line, and because the wave structure makes the fibers straighten from curved under the action of external force, better deformation and recovery can be achieved, thereby reducing tearing caused by external force.

[0023] The second area 2 includes the square area 21 and the connecting area 22, the square area 21 and the connecting area 22 are arranged alternately, the second area 2 is arranged in a rhombus as a whole, one of the diagonal lines of the second area 2 includes six square areas 21, and the other diagonal line of the second area 2 includes five square areas 22, because the fibers in the second area 2 are laid in a cross-laying manner, and the fibers in the second area 2 are all curved, therefore the fibers in the square area 21 and the connecting area 22 formed by the needle punching process are all curved fibers, because the second area 2 is laid in a cross-laying manner, the cross-laying is added on the basis of the wave-shaped fibers, the contact points and the cohesion of the fibers are increased, the fibers in the second area 2 are more difficult to slip under stress, and the second area 2 is connected with the first area 1, therefore the connection can improve the strength and the tear resistance of the non-woven fabric as a whole.

[0024] The diagonal line where the six square areas 21 are located is close to the connection between the wave trough of the first wave area 11 and the wave trough of the second wave area 12, one end of the diagonal line where the five square areas 21 are located is connected with the wave crest of the first wave area 11, and the other end of the diagonal line where the five square areas 21 are located is connected with the wave crest of the second wave area 12, therefore the second area 2 is located in the center surrounded by the first wave area 11 and the second wave area 12, therefore the straight laying of the first wave area 11 and the second wave area 12 is combined with the cross-laying of the second area 2, and the fibers in the first area 1 and the second area 2 are all curved, therefore the fibers can more evenly share the stress, when the non-woven fabric is subjected to tensile or bending load, the possibility of fiber fracture can be reduced, thereby improving the toughness and the anti-deformation ability of the non-woven fabric as a whole, and because the combination of the straight laying and the cross-laying makes the curved fibers form more micropores and voids after the needle punching process, thereby increasing the loftiness of the non-woven fabric.

[0025] The width of the square area 21 is greater than the width of the first wavy area 11, the width of the square area 21 is greater than the width of the second wavy area 12, the width of the first wavy area 11 and the second wavy area 12 is greater than the width of the connecting area 22, the square area 21 is higher than the connecting area 22, the first wavy area 11 and the second wavy area 12 are higher than the connecting area 22, the height of the first wavy area 11 and the second wavy area 12 is the same as the height of the square area 21, so that the square area 21 is higher than the connecting area 22, so that after the non-woven fabric is formed by needling, the protruding square block is increased on the basis of the fiber bending, thereby reducing the contact area of the non-woven fabric and further improving the air permeability of the non-woven fabric, and the first area 1 is higher than the connecting area 22 and flush with the square area 21, so that the square area 21 can alleviate the breakage of the straight-laid bending fiber of the first area 1 due to excessive stretching, thereby increasing the strength of the fabric, because the first area 1 and the second area 2 are formed by the needling process of the non-woven fabric, during the needling process, the fibers are laid by the characteristics of the laid web, but the fibers also exist sliding, so that the first area 1 and the second area 2 are connected in the width direction of the non-woven fabric, and there is a certain space in the length direction of the non-woven fabric, because the fibers laid in the length direction are more relaxed than the fibers laid in the width direction, so that a certain space is provided in the length direction of the non-woven fabric, so that the space left in the length direction of the non-woven fabric after the needling process is also formed by the non-woven fabric, thereby reducing the extrusion of the fibers in the length direction of the non-woven fabric, so that the first area 1 is more uniform, and not only can the first area 1 be connected to the second area 2, but also the non-woven fabric fibers can disperse stress under external force, thereby reducing the phenomenon of tearing of the non-woven fabric.

[0026] The preferred embodiments of the present application are described above, the protection scope of the present application is not limited to the above-mentioned embodiments, any technical solutions falling within the concept of the present application shall fall 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 shall be considered as the protection scope of the present application.

Claims

1. A tear resistant nonwoven fabric, characterized by, The first region (1) comprises a first wave area (11) and a second wave area (12), the first wave area (11) and the second wave area (12) are arranged alternately along the width direction of the non-woven fabric, the first wave area (11) and the second wave area (12) are symmetrically arranged, the peak of the first wave area (11) is away from the peak of the second wave area (12), and the valley of the first wave area (11) is connected to the valley of the second wave area (12).

2. The tear resistant nonwoven fabric according to claim 1, wherein The second region (2) comprises a square area (21) and a connecting area (22), and the square area (21) and the connecting area (22) are arranged alternately.

3. The tear resistant nonwoven fabric of claim 2, wherein The second region (2) is arranged in a rhombus shape as a whole, one diagonal line of the second region (2) comprises six square areas (21), and the other diagonal line of the second region (2) comprises five square areas (21).

4. The tear resistant nonwoven fabric of claim 3, wherein The six square areas (21) are arranged on a diagonal line close to the connecting position of the valleys of the first wave area (11) and the second wave area (12), one end of the diagonal line on which the five square areas (21) are arranged is connected to the peak of the first wave area (11), and the other end of the diagonal line on which the five square areas (21) are arranged is connected to the peak of the second wave area (12).

5. The tear resistant nonwoven fabric of claim 2, wherein The width of the square area (21) is greater than the width of the first wave area (11), the width of the square area (21) is greater than the width of the second wave area (12), and the width of the first wave area (11) and the second wave area (12) is greater than the width of the connecting area (22).

6. The tear resistant nonwoven fabric of claim 2, wherein The square area (21) is higher than the connecting area (22), the first wave area (11) and the second wave area (12) are higher than the connecting area (22), and the height of the first wave area (11) and the second wave area (12) is the same as the height of the square area (21).

7. The tear resistant nonwoven fabric of claim 1 wherein, The first region (1) adopts polypropylene fibers, and the second region (2) adopts polyester fibers.

8. The tear resistant nonwoven fabric of claim 7, wherein The fibers of the first region (1) are parallel, the fibers of the second region (2) are crossed, and the fibers of the first region (1) and the second region (2) are all in a wave structure.

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