CN1289751C - Wear-resistant and highly elastic racket string structure and its manufacturing method - Google Patents

Abstract

A wear-resistant high-elasticity racket string structure and a manufacturing method thereof, the racket string is made by bundling a plurality of monofilament mixed TPE monofilaments of nylon 6 or nylon 6/66 copolymer together to form a core string, and the outer layer is sequentially coated with a TPU and nylon mixed layer, a TPE and nylon mixed layer and a TPU layer; by the manufacturing method, the racket string has more stable wear resistance and elasticity.

Description

Wear-resistant and highly elastic racket string structure and its manufacturing method

                      

The present invention relates to a wear-resistant and high-elastic racket string structure and its manufacturing method. It utilizes molten TPE to be mixed between the strands of nylon monofilament, so that TPE can exist in the center of the string in a uniform and stably controlled state. Between each nylon monofilament, three coating layers, such as TPU and nylon mixed layer, TPE and nylon mixed layer, and TPU layer, are sequentially coated on it to form the structure of the racket string body, ensuring that the racket string has a more stable durability. Abrasive and elastic, and provide the best industrial utilization and practical value.

Background technique

Generally speaking, to judge the quality of a racket, in addition to the racket shaft itself, more emphasis is placed on the wear resistance and elastic performance of the racket string, which is also related to the service life of the racket string and the hitting performance; therefore, all current racket strings During the production process of the racket body, it is often necessary to impregnate the core thread with thermoplastic plastic, and the thermoplastic plastic itself has better elastic properties to increase the elasticity of the racket string, in order to meet people's requirements.

However, this method of using impregnation to combine thermoplastic plastic with core wire has a blind spot in use, because this method cannot accurately control the impregnation amount and distribution of plastic plastic impregnated into core wire, so it often results in uneven distribution of plastic plastic. Moreover, the process and quality are unstable, and the failure rate is relatively high. In other words, it can’t achieve the expected results in terms of physical properties such as wear resistance and elasticity, which are particularly important for general racket strings; relevant personnel are deeply troubled by this bottleneck, so there is a need for breakthroughs and improvements in order to expect its quality to be better. Perfect.

For this reason, the inventor of the present invention relies on his long-term research on the structure of various wear-resistant high-elastic racket strings and their production methods and the idea of comprehension, and invented a method that uses molten TPE to be mixed between the wire bundles of nylon monofilaments, so that TPE can exist between the nylon monofilaments of the core thread in a uniform and stable state, and then cover it with three coating layers such as TPU and nylon mixed layer, TPE and nylon mixed layer, and TPU layer in sequence. The structure of the racket string body is formed to ensure that the racket string has more stable wear resistance and elasticity, so as to achieve the best industrial utilization and practicality.

Contents of invention

Therefore, the main purpose of the present invention is to provide a wear-resistant high-elastic racket string structure and its manufacturing method, which is mainly through the fusion of molten TPE between a number of nylon monofilament strands under pressure, so that the TPE can be uniform and It exists between the nylon monofilaments of the core thread in a stable and controlled state; in this way, it can ensure that the core thread is tightly combined and provides more stable elasticity.

Another object of the present invention is to provide a wear-resistant and high-elastic racket string structure and its manufacturing method, which is to sequentially coat a TPU and nylon mixed layer, a TPE and nylon mixed layer and a TPU layer on the outside of the core wire, And with the help of the TPU in the first coating layer, which can increase the wear resistance of the racket string, the TPU and nylon mixed layer can increase the interface strength of the coating, and at the same time, the force is applied through the second coating layer TPE and nylon mixture layer Afterwards, it has better elastic recovery rate and recovery rate, and the outermost TPU layer has stability and better abrasion resistance, so that the racket string made by this method has stable abrasion resistance and elasticity at the same time, so that it can Widely used in various rackets.

The object of the present invention is achieved by following method and structure:

A method for making a wear-resistant and highly elastic racket string, wherein the string body of the racket string is made by the following method: intertwining several nylon 6 or nylon 6/66 copolymer monofilaments, and thermoplastic elastomer TPE Melt and mix between nylon 6 or nylon 6/66 copolymer monofilaments to form a core structure, and then cover the outside with a first coating layer formed by thermoplastic polyurethane TPU and nylon polymer, A second covering layer formed of a mixture of TPE and nylon and a TPU layer.

A wear-resistant and highly elastic racket string structure, the racket string includes the following structure: a number of nylon 6 or nylon 6/66 copolymer monofilaments are intertwined and thermoplastic elastomer TPE is melt-mixed with each nylon 6 or nylon 6/66 The core structure formed between 66 copolymer monofilaments; the outside of the core structure is coated in turn with a thermoplastic polyurethane TPU and a first coating layer formed by nylon polymer, a TPE and A second cover layer of nylon blend and a TPU layer.

In order to further illustrate the performance of the present invention, a preferred embodiment is enumerated below, and in conjunction with the drawings and figure numbers, the composition of the present invention and the effects achieved are described in detail as follows:

Description of drawings

Fig. 1 is the constituent structural diagram of racket string of the present invention;

Fig. 2 is a schematic diagram of the production process of the racket string of the present invention;

Fig. 3 is a block diagram of the manufacturing process of the racket string of the present invention.

In the picture:

(A) Line body

(10) heart core

(11) TPE

(12) Nylon monofilament

(20) TPU and nylon blend layer

(30) TPE and nylon mixture layer

(31) Nylon monofilament

(32) TPE

(40) TPU layer

(50) molding equipment

(51)(52) Pay-off table

(511) Spools

(53)(54) Cluster

(55) Oven

(56)(57) Coating device

(58) Take-up table

Detailed ways

Please refer to shown in Fig. 1, it is the constituent structure drawing of racket string of the present invention, and racket string body (A) of the present invention is mainly made of TPE (thermoplastic elastomer) (11) melted in some nylon 6 or nylon 6/66 copolymerization A core (10) formed between body nylon monofilaments (12) is coated (coating) a TPU (thermoplastic polyurethane) and nylon mixture layer (20), a TPE and nylon mixture layer on the outside in sequence (30) and a TPE layer (40); wherein, the core (10) is made of a number of nylon monofilaments (12) that are intertwined with each other in the forward direction, and then the melted TPE (11) is pressurized and fused in Formed between each nylon 6 or nylon 6/66 copolymer nylon monofilament (12), thereby tightly combined into an integral structure; like this, it can exist in the center of the core (10) core line under a uniform and controlled state. Between each nylon monofilament (12), thereby can obtain stable elastic effect; Secondly, the TPU and nylon mixture layer (20) that this heart core (10) core wire periphery coats, is to make full use of the physical characteristic of TPU itself, with Increase its wear resistance, and the overall mixed layer can increase the interface strength of its coating relative to the wire body; in addition, the outer periphery of the TPU and nylon mixture layer (20) that covers the first layer is recoated One layer of the same TPE and nylon mixture layer (30) as the core (10), the difference is that the nylon monofilament (31) is twisted in opposite directions, and then the melted TPE (32) is pressurized and fused Formed between each nylon monofilament (32), to increase the structural tightness of the racket string (A) and its elastic recovery rate and recovery rate after being stressed; and in the second layer of TPE and nylon mixture ( 30) After the process, it needs to be dried and cured in an oven (OVEN), and after it is cured and formed, a TPU layer (40) is coated on the periphery, so that the TPU layer (40) can increase the durability of the racket string A. Abrasive.

Please refer to shown in Fig. 2, it is the production process schematic diagram of racket string of the present invention, and it is provided with a molding equipment (50), and it is to comprise two roads pay-off table (51) (52), two road bundler (53) (54), a baking oven (55), two cladding devices (56) (57) and a take-up table (58); during molding, the nylon monofilament (12 ) are released together from the spools (511) on the pay-off table (50) (please refer to Figure 3 for details), and after they are intertwined in the forward direction, they are bundled in the bundler (53) to form a wire structure, and then melted TPE (11) is pressurized and fused between each nylon monofilament (12) to form a bundle of wires as the core (10), and then the core (10) is passed through the first coating device (56) to make its outer surface A TPU and nylon mixture layer (20) can be coated, and then it is passed through the second pay-off table (52) and the bundler (54), so that the outside is wound with a nylon monofilament (31) layer in reverse , and then TPE (32) is fused between each nylon monofilament (31) to form the second coating layer of TPE and nylon mixture layer (30). After the coating is completed, it is passed through an oven (55). Dry and solidify, and then go through the last coating device (57) to make it coated with a TPU layer (40), then the molding process of the racket string body center can be completed, and then it is wound up by the wire take-up table (58) Finish.

To sum up, the wear-resistant and high-elastic racket string structure and its manufacturing method of the present invention are a kind of use of melted TPE mixed between the wire bundles of nylon monofilament, so that the TPE exists in the core in a uniform and stable state. Between the nylon monofilaments of the string, three coating layers, such as TPU and nylon mixed layer, TPE and nylon mixed layer, and TPU layer, are sequentially coated on it to form the method and structure of the racket string body, which can ensure The racket string has more stable wear resistance and elasticity to meet industrial practicability and cost-effectiveness, and its structure has never been seen in books or public use.

It should be pointed out that the above descriptions are the specific embodiments of the present invention and the technical principles used. If changes are made according to the concept of the present invention, the functions produced will not exceed the spirit covered by the description and drawings. should be within the scope of the present invention.

Claims (8)

1, a kind of method for making of wear-resisting high-elasticity strings, it is characterized in that: the line body of this racket string is to utilize following method to make: some nylon 6 or nylon 6/66 copolymer monofilament are twined mutually, and with thermoplastic elastomer (TPE) TPE melting mixing between each nylon 6 or nylon 6/66 copolymer monofilament and form wholeheartedly stamen structure, coat second clad and a TPU layer of first clad that a thermoplastic poly amido formate TPU and nylon polymer form, a TPE and nylon mixture formation more successively in the outside.

2, the method for making of wear-resisting high-elasticity strings according to claim 1, wherein, when making the described heart stamen and second clad, its some nylon monofilaments adopt one fixing to canoe.

3, the method for making of wear-resisting high-elasticity strings according to claim 2, wherein, in described heart stamen and second layer clad, described nylon monofilament adopts just the opposite canoe.

4, the method for making of wear-resisting high-elasticity strings according to claim 1, wherein, after described second clad TPE and nylon mixture layer are covered to complete, through a baking oven with line body baking and curing.

5, a kind of structure of wear-resisting high-elasticity strings, it is characterized in that: this racket string comprises following structure: by some nylon 6 or nylon 6/66 copolymer monofilament twine mutually and with thermoplastic elastomer (TPE) TPE melting mixing between each nylon 6 or nylon 6/66 copolymer monofilament and the heart stamen structure that forms; The outside of described heart stamen structure second clad and a TPU layer of the thermoplastic poly amido formate TPU that coats successively and nylon polymer first clad, a TPE and the nylon mixture formation that form.

6, the structure of wear-resisting high-elasticity strings according to claim 5, wherein, in the described heart stamen and second clad, its some nylon monofilaments adopt one fixing to canoe.

7, the structure of wear-resisting high-elasticity strings according to claim 6, wherein, in described heart stamen and second layer clad, described nylon monofilament adopts just the opposite canoe.

8, the structure of wear-resisting high-elasticity strings according to claim 5, wherein, after the described second clad TPE and nylon mixture layer are covered to complete, through a baking oven with line body baking and curing.

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