CN214074948U

CN214074948U - Tennis line reinforced by polyamide fiber

Info

Publication number: CN214074948U
Application number: CN202023250867.2U
Authority: CN
Inventors: 刘伟
Original assignee: Dongguan Bosti New Material Co ltd
Current assignee: Dongguan Bosti New Material Co ltd
Priority date: 2020-12-29
Filing date: 2020-12-29
Publication date: 2021-08-31
Anticipated expiration: 2030-12-29

Abstract

The application relates to the technical field of appliances for tennis, in particular to a polyamide fiber reinforced tennis string which comprises at least two strands of mutually twisted tennis string monofilaments, wherein each tennis string monofilament comprises a carbon fiber layer and a polyamide layer wrapped outside the carbon fiber layer. The high-strength wear-resistant steel has good tensile strength, excellent wear resistance and excellent softness and mechanical strength.

Description

Tennis line reinforced by polyamide fiber

Technical Field

The application relates to the technical field of appliances for tennis, in particular to a polyamide fiber reinforced tennis string.

Background

Tennis is one of ball games, and tennis racket is used for tennis, and tennis racket comprises head, throat, handle, still need to cooperate accessories such as tennis line, shock attenuation knot to use when using, and different tennis rackets are applicable to different crowds.

Users want the tennis line to have good hitting feeling and to be durable. However, currently, tennis strings which are generally durable are on the market at the expense of hitting feeling; tennis strings of thicker gauge, stiffer material, are more durable, but they are less elastic than thin, flexible polyamide strings. Generally, a good quality tennis string needs to have good elasticity so that it can rebound the ball at the moment of contact with the ball; the material, structure and thickness of the string of the tennis string can influence the hitting feeling and comfort; the existing tennis line is generally in the form of a single polyamide filament and has defects in the aspects of strength, working performance and the like.

SUMMERY OF THE UTILITY MODEL

In order to improve the strength of tennis strings, the present application provides a polyamide fiber reinforced tennis string.

The polyamide fiber reinforced tennis ball thread provided by the application adopts the following technical scheme:

a polyamide fiber reinforced tennis ball thread comprises at least two mutually twisted tennis ball thread monofilaments, wherein each tennis ball thread monofilament comprises a carbon fiber layer and a polyamide layer wrapped outside the carbon fiber layer.

By adopting the technical scheme, the carbon fiber is a special fiber composed of carbon elements, has the characteristics of high temperature resistance, friction resistance, electric conduction, heat conduction, corrosion resistance and the like, is fibrous and soft in appearance, can be processed into various fabrics, has high strength and modulus along the fiber axis direction, and after the carbon fiber is coated with the polyamide layer, the polyamide has high strength and good wear resistance, so that the tennis string has good tensile strength and excellent wear resistance, and after at least two strands of tennis string monofilaments are twisted to form the tennis string, the tennis string has excellent softness and mechanical strength.

Preferably, the tennis string monofilament is provided in two strands.

By adopting the technical scheme, the two strands of tennis ball threads can reduce the production cost while ensuring that the tennis ball threads have good flexibility and mechanical strength.

Preferably, the pitch of the two tennis ball thread monofilaments ranges from 3 mm to 5 mm.

By adopting the technical scheme, the tennis string has better stretching performance due to the pitch of 3-5mm, can be stretched to be longer, and the softness of the tennis string is improved, so that the tennis string can be eaten well after a tennis ball impacts the tennis string during tennis, and meanwhile, the tennis string is not easy to break.

Preferably, the thickness of the polyamide layer ranges from 0.15 mm to 0.2mm, and the diameter of the carbon fiber layer ranges from 0.35 mm to 0.5 mm.

By adopting the technical scheme, experiments show that the 0.15-0.2mm polyamide layer can enable the tennis ball line to have good wear resistance, the 0.35-0.5mm carbon fiber layer enables the tennis ball line to have good mechanical strength, and after the two layers are combined together, the overall diameter of the tennis ball line cannot be too large, so that the pound number of a tennis racket made of the tennis ball line is too large, and people are forced to play tennis.

Preferably, the roughness of the polyamide layer is Ra0.1-0.4 μm.

By adopting the technical scheme, the surface of the polyamide layer is smooth due to the roughness of Ra0.1-0.4 mu m, so that tennis can be well rotated on a tennis racket when tennis is performed, and the competitive performance of tennis is improved.

Preferably, the carbon fiber layer comprises a plurality of carbon fiber monofilaments which are twisted.

By adopting the technical scheme, the carbon fiber layer formed by stranding a plurality of carbon fiber monofilaments has good mechanical property, so that the mechanical property of the tennis line is improved.

Preferably, the surface of the carbon fiber monofilament is provided with a plurality of grooves.

Through adopting above-mentioned technical scheme, the bonding area between carbon fiber layer and the polyamide layer can be increased to a plurality of grooves on the carbon fiber monofilament surface to strengthen the joint strength between carbon fiber layer and the polyamide layer, make and be difficult to take place to take off the cunning between carbon fiber layer and the polyamide layer, thereby improve the stability of tennis line in the use, and improve the intensity of tennis line.

Preferably, the diameter of the carbon fiber monofilament is in the range of 6 to 8 μm.

By adopting the technical scheme, the carbon fiber layer formed by twisting 6-8 mu m carbon fiber monofilaments has good flexibility and high mechanical strength.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the carbon fiber has the characteristics of high temperature resistance, friction resistance, electric conduction, heat conduction, corrosion resistance and the like, the shape is fibrous, soft and can be processed into various fabrics, after the carbon fiber is coated with the polyamide layer, the tennis line has good tensile strength and excellent wear resistance due to high strength and good wear resistance of the polyamide, and the tennis line has excellent softness and mechanical strength after at least two strands of tennis line monofilaments are twisted to form the tennis line.

The tennis line has good stretching performance due to the pitch of 2.3-5mm, can be stretched to be longer, and the softness of the tennis line is improved, so that the tennis line can be eaten well after a tennis ball impacts the tennis line in the process of tennis, and meanwhile, the tennis line is not easy to break.

3. The bonding area between carbon fiber layer and the polyamide layer can be increased to a plurality of grooves on the carbon fiber monofilament surface to reinforcing carbon fiber layer and polyamide layer between the joint strength, making be difficult to take place to take off the cunning between carbon fiber layer and the polyamide layer, thereby improving the stability of tennis line in the use, and improve the intensity of tennis line.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present application.

Figure 2 is a schematic pitch diagram of tennis ball line monofilaments in an embodiment of the present application.

Figure 3 is a schematic cross-sectional view of a tennis ball line monofilament in an embodiment of the present application.

Fig. 4 is a schematic structural view of a carbon fiber monofilament in the embodiment of the present application.

In the figure: 1. tennis ball thread monofilament; 11. a carbon fiber layer; 111. carbon fiber monofilaments; 12. a polyamide layer; 13d, pitch.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses a carbon fiber reinforced tennis ball. Referring to fig. 1, the tennis ball line monofilament 1 comprises two strands of tennis ball line monofilaments 1 which are twisted with each other, wherein the tennis ball line monofilament 1 is a long filament, the cross section of the tennis ball line monofilament 1 is circular, an operator can twist the two strands of tennis ball line monofilaments 1 together by using a twisting machine, and the pitch of the two strands of tennis ball line monofilaments 1 is controlled to be 3-5mm, and in the embodiment, the pitch of the two strands of tennis ball line monofilaments 1 is preferably 5 mm; a pitch of 5mm enables a better stretching performance of the tennis line, enables the tennis line to be stretched longer, and improves the softness of the tennis line. When the tennis strings are applied to the tennis racket, an operator may divide the plurality of tennis strings into two parts, so that the two parts of tennis strings are woven with each other, and both ends of the tennis strings are tied to the tennis racket.

Referring to fig. 2 and 3, the tennis ball thread monofilament 1 includes a strip-shaped carbon fiber layer 11 and a polyamide layer 12 wrapped outside the carbon fiber layer 11; in this embodiment, an operator may dry the carbon fiber in the paint in which the polyamide is dissolved, and then attach the polyamide layer 12 to the carbon fiber layer 11, and may repeat the coating process, so that the carbon fiber layer 11 has the polyamide layer 12 with a large thickness. Meanwhile, the thickness range of the polyamide layer 12 is 0.15-0.2mm and the diameter range of the carbon fiber layer 11 is 0.35-0.5mm according to test. In the present embodiment, the diameter of the carbon fiber layer 11 is preferably 0.4mm, and the thickness of the polyamide layer 12 is preferably in the range of 0.18 mm. The 0.18mm polyamide layer 12 and the 0.4mm carbon fiber layer 11 can enable the tennis ball thread to have good wear resistance and mechanical strength. In addition, the roughness of the outer surface of the polyamide layer 12 is Ra0.1-0.4 μm, and the surface has no burr, in this embodiment, the roughness of the outer surface of the polyamide layer 12 is Ra0.2 μm; when tennis is performed, the smooth-surface polyamide layer 12 enables tennis balls to rotate well on a tennis racket, and therefore the competitive performance of tennis is improved.

Referring to fig. 3 and 4, carbon fiber layer 11 includes a plurality of carbon fiber monofilaments 111 twisted together, and a diameter of each single carbon fiber monofilament 111 is in a range of 6 to 8 μm, and in the present embodiment, a diameter of each single carbon fiber monofilament 111 is preferably 7 μm. Meanwhile, a plurality of grooves are formed in the surface of the carbon fiber monofilament 111 at intervals along the length direction of the carbon fiber monofilament, the grooves can increase the bonding area between the carbon fiber layer 11 and the polyamide layer 12, so that the connection strength between the carbon fiber layer 11 and the polyamide layer 12 is enhanced, the carbon fiber layer 11 and the polyamide layer 12 are not easy to slip, and the strength of the tennis line is improved.

The implementation principle of the embodiment of the application is as follows: the carbon fiber has the characteristics of high temperature resistance, friction resistance, electric conduction, heat conduction, corrosion resistance and the like, the shape is fibrous, soft and can be processed into various fabrics, after the carbon fiber is coated with the polyamide layer 12, the tennis string has good tensile strength and excellent wear resistance due to high strength and good wear resistance of the polyamide, and after two strings of tennis string monofilaments 1 are twisted to form the tennis string, the tennis string has excellent flexibility and mechanical strength.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A polyamide fibre reinforced tennis string characterized by: the tennis ball line monofilament structure comprises at least two mutually twisted tennis ball line monofilaments (1), wherein each tennis ball line monofilament (1) comprises a carbon fiber layer (11) and a polyamide layer (12) wrapped outside the carbon fiber layer (11).

2. A polyamide fibre reinforced tennis string according to claim 1, characterised in that: the tennis string monofilament (1) is provided with two strands.

3. A polyamide fibre reinforced tennis string according to claim 2, characterised in that: the pitch range of the two tennis ball thread monofilaments (1) is 3-5 mm.

4. A polyamide fibre reinforced tennis string according to claim 1, characterised in that: the thickness range of the polyamide layer (12) is 0.15-0.2mm, and the diameter range of the carbon fiber layer (11) is 0.35-0.5 mm.

5. A polyamide fibre reinforced tennis string according to claim 1, characterised in that: the roughness of the polyamide layer (12) is Ra0.1-0.4 mu m.

6. A polyamide fibre reinforced tennis string according to claim 1, characterised in that: the carbon fiber layer (11) is formed by stranding a plurality of carbon fiber monofilaments (111).

7. A polyamide fibre reinforced tennis string according to claim 6, characterised in that: the surface of the carbon fiber monofilament (111) is provided with a plurality of grooves.

8. A polyamide fibre reinforced tennis string according to claim 6, characterised in that: the diameter range of the carbon fiber monofilament (111) is 6-8 mu m.