High-elasticity racket and production process thereof

Abstract

The invention provides a high-elasticity racket and a production process thereof, and relates to the technical field of rackets, a first laminate made of PET is fixedly connected between two second laminates made of EPP through resin to form a laminated structure, and then an edge layer is fixedly connected to the peripheral side of the laminated structure through resin to form the high-elasticity racket. Then the surface layer is fixedly connected to the surface of the laminated structure and the peripheral side face of the edge layer through resin to form a racket initial blank, and then the racket initial blank is placed in a mold to be subjected to hot pressing machining to form a racket finished product; the racket is made of the EPP material and the PET material through hot pressing, so that the surface of the racket is a complete plane, the ball hitting elasticity of the racket is improved, the adhesion area of an adhesive is increased, the durability of the racket is improved, the overall strength and the ball hitting elasticity of the racket are effectively improved, and the service life of the racket is prolonged. Furthermore, the durability of the racket can be improved under the condition that the weight of the racket is proper, and the elastic performance of the racket can be maintained for a long time.

Description

Technical Field

[0001] The invention relates to the technical field of rackets, in particular to a high-elasticity racket and a production process thereof. Background Art

[0002] Pickleball is a sport in which a ball is hit with a racket. It originated from Benbridge Island in Seattle, USA. It can be said to be a combination of tennis, badminton and table tennis. The amount of activity and exercise is less than tennis, and it is suitable for people of all ages. Therefore, it has gradually become popular in recent years and is loved by the public.

[0003] In the past, pickle ball rackets were made using a sandwich structure of a PP core board and an aramid core board (the PP core board is made by bundling multiple hollow PP core tubes, which are then bonded to each other using adhesive. After the fixation is completed, the PP core board is formed by transverse quantitative thickness cutting. The aramid core board is made in the same way as the PP core board, but uses a hollow aramid core tube). Since the PP core board or the aramid core board is formed by bonding multiple tubes longitudinally to each other, the surface of the board is not a complete plane, but has multiple through holes, which limits the elasticity of the racket when hitting the ball and results in poor elasticity when hitting the ball.

[0004] Because it is a pp core board or an aramid core board, the adhesive can only adhere to the edges of multiple tubes during bonding, resulting in uneven bonding. The middle area of ​​the racket body is often needed to hit the ball, and the middle area is the sweetheart area for hitting the ball, which causes the sweetheart area to be frequently subjected to impact force. Long-term impact will cause the adhesive to fall off, and the strength of the pp core board and the aramid core board is insufficient, causing the middle area to collapse and the durability to decrease, which in turn causes the elasticity of the racket to decrease, resulting in poor hitting effect, and ultimately leading to a decrease in ball control ability, return power and accuracy.

[0005] Therefore, it is necessary to propose a high-elasticity racket and its production process to improve the overall strength and hitting elasticity of the racket, thereby ensuring that the racket is of appropriate weight and also improving the durability of the racket, and maintaining the elastic performance of the racket for a long time. Summary of the invention

[0006] In order to solve the above problems, the present invention proposes a high-elasticity racket and its production process to improve the overall strength and hitting elasticity of the racket, thereby ensuring that the racket is of appropriate weight and also improving the durability of the racket, maintaining the elastic performance of the racket for a long time.

[0007] The present invention is achieved through the following technical solutions:

[0008] The present invention proposes a high-elasticity racket, comprising a first layer plate, two second layer plates, and an edge layer. The first layer plate is fixedly connected between the two second layer plates to form a laminated structure. The edge layer is fixedly connected to the outer peripheral side of the laminated structure. The first layer plate is made of PET material, and the two second layer plates are both made of EPP material.

[0009] Furthermore, the thickness of the first layer is a, the thickness of the second layer is b, and the ratio of a to b is 4 to 3.

[0010] Furthermore, the thickness of the first layer is 5-7 mm.

[0011] Furthermore, the thickness of the first layer is 6 mm.

[0012] Furthermore, the thickness of the edge layer is 1.8 to 2.2 mm.

[0013] Furthermore, the edge layer is made of foam material.

[0014] Furthermore, the high-elasticity racket also includes a surface layer, and the surface layer wraps and fixes the surface of the laminated structure and the edge layer.

[0015] Furthermore, the surface layer is any one of carbon fiber, Kevlar, and glass fiber.

[0016] A production process for a high-elasticity racket comprises the following steps:

[0017] S1-laminated structure production, a first layer plate made of PET is fixedly connected between two second layer plates made of EPP by resin to form a laminated structure;

[0018] S2-edge layer bonding, the edge layer is fixedly connected to the outer peripheral side of the laminated structure by resin;

[0019] S3-surface layer bonding treatment, the surface layer is fixedly connected to the surface of the laminated structure and the outer peripheral side of the edge layer by resin to form a racket blank;

[0020] S4-hot pressing, placing the racket blank in the mold for hot pressing to form a finished racket.

[0021] Furthermore, the hot pressing step includes:

[0022] The racket blank is placed in a mold for hot pressing processing at a temperature of 125 to 135 degrees Celsius, and the racket blank is compressed in thickness by a compression amount of 11% to 16%.

[0023] Beneficial effects of the present invention:

[0024] The present invention proposes a high-elasticity racket and its production process. A first layer plate made of PET (polyethylene terephthalate) is fixedly connected between two second layer plates made of EPP (expanded polypropylene) by resin to form a laminated structure, and then an edge layer is fixedly connected to the outer peripheral side of the laminated structure by resin, and then a surface layer is fixedly connected to the surface of the laminated structure and the outer peripheral side of the edge layer by resin to form a racket blank, and then the racket blank is placed in a mold for hot pressing to form a finished racket. The racket is formed by hot pressing using EPP material and PET material, so that the surface of the racket is a complete plane, and the complete plane and the material itself improve the racket's hitting elasticity, and at the same time, the adhesive area of ​​the adhesive is also increased, so that the durability of the racket is increased. In summary, the high-elasticity racket and its production process can effectively improve the overall strength and hitting elasticity of the racket, and then improve the durability of the racket while ensuring that the racket is of appropriate weight, and maintain the elastic performance of the racket for a long time. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 An exploded view of the high-elasticity racket of the present invention;

[0026] Figure 2 is a cross-sectional view of a high-elasticity racket of the present invention;

[0027] Figure 3 is an overall schematic diagram of a high elasticity racket of the present invention;

[0028] Figure 4 The present invention is a production process flow chart of the high elasticity racket.

[0029] The reference numerals are as follows:

[0030] First layer board 1 , second layer board 2 , edge layer 3 , laminate structure 102 , surface layer 4 . DETAILED DESCRIPTION

[0031] In order to more clearly and completely illustrate the technical solution of the present invention, the present invention is further described below in conjunction with the accompanying drawings.

[0032] Please refer to Figure 1-Figure 3 The present invention proposes a high-elasticity racket, including a first layer plate 1, two second layer plates 2, and an edge layer 3. The first layer plate 1 is fixedly connected between the two second layer plates 2 to form a laminated structure 102, and the edge layer 3 is fixedly connected to the outer peripheral side of the laminated structure 102. The first layer plate 1 is made of PET material, and the two second layer plates 2 are both made of EPP material.

[0033] In this embodiment, a first layer plate made of PET is fixedly connected between two second layers made of EPP to form a laminated structure 102, and the edge layer 3 is used as a structure to protect the outer peripheral side of the laminated structure 102. Since PET plate (polyethylene terephthalate) is often used as a sandwich material, EPP plate (foamed polypropylene) has low thermal conductivity, which reduces heat transfer while also reducing sound propagation, so that the laminated structure 102 has a shock-absorbing function. Moreover, the surface of the laminated structure 102 is a complete plane. The complete plane and the material itself improve the elasticity of the racket when hitting the ball, and at the same time, the sweet spot of the ball has a higher rebound ability, ensuring that the racket does not collapse or deform. At the same time, the complete plane also increases the adhesion area of ​​the adhesive, which increases the durability of the racket and effectively improves the overall strength and elasticity of the racket when hitting the ball.

[0034] The laminate structure 102 may extend to the handle structure of the racket to improve the shock absorption function when gripping.

[0035] In this embodiment, the thickness of the first layer 1 is a, the thickness of the second layer 2 is b, and the ratio of a to b is 4 to 3; for example, the thickness of the first layer 1 is 6 mm, and the thickness of the second layer 2 is 4.5 mm. This ratio of a to b can optimize the amount of material used in the laminate structure 102 while also allowing the racket to have the best hitting elasticity.

[0036] In this embodiment, the thickness of the first layer 1 is 5-7 mm; the optimal thickness of the first layer 1 is 6 mm; this thickness can optimize the amount of material used in the first layer 1 while also allowing the racket as a whole to have the best hitting elasticity.

[0037] In this embodiment, the thickness of the edge layer 3 is 1.8 to 2.2 mm; the optimal thickness of the edge layer 3 is 2 mm, and the width of the edge layer 3 is the same as the thickness of the laminated structure 102, so as to facilitate the bonding and fixing of the outer peripheral side of the laminated structure 102 to protect the outer peripheral side of the laminated structure 102.

[0038] In this embodiment, the edge layer 3 is a foam material. The foam material itself has the characteristics of being soft, fluffy and elastic, and can effectively cushion the impact and protect the outer peripheral side of the laminated structure 102.

[0039] In this embodiment, the high-elasticity racket also includes a surface layer 4, which wraps and fixes the surface of the laminated structure 102 and the edge layer 3, and the surface layer 4 is used to decorate the racket; the surface layer 4 is any one of carbon fiber, Kevlar, and glass fiber, and the surface layer 4 can be sprayed with color as required.

[0040] Please refer to Figure 4, a production process of a high-elasticity racket, comprising the following steps:

[0041] S1-laminated structure production, a first layer plate made of PET is fixedly connected between two second layer plates made of EPP by resin to form a laminated structure;

[0042] S2-edge layer bonding, the edge layer is fixedly connected to the outer peripheral side of the laminated structure by resin;

[0043] S3-surface layer bonding treatment, the surface layer is fixedly connected to the surface of the laminated structure and the outer peripheral side of the edge layer by resin to form a racket blank;

[0044] S4-hot pressing, placing the racket blank in the mold for hot pressing to form a finished racket.

[0045] In this embodiment, when the present invention is produced, a first layer plate 1 made of PET (polyethylene terephthalate) is fixedly connected between two second layer plates 2 made of EPP (expanded polypropylene) by resin to form a laminated structure 102, and then the edge layer 3 is fixedly connected to the outer peripheral side of the laminated structure by resin, and then the surface layer 4 is fixedly connected to the surface of the laminated structure 102 and the outer peripheral side of the edge layer 3 by resin to form a racket blank, and then the racket blank is placed in a mold for hot pressing. Processing to form a finished racket; during the hot pressing process, the hot pressing temperature is 125-135 degrees Celsius, and the racket blank is compressed by 11%-16%. For example, the thickness of the laminated structure 102 before hot pressing is 18-19 mm. After hot pressing, the thickness of the finished racket is 16 mm, and the thickness of 16 mm is the final thickness of the racket; the final thickness of the finished racket can also be customized according to usage requirements. Finally, the surface of the finished racket can be sprayed with patterns or decorated with decorations.

[0046] Of course, the present invention may have many other implementations. Based on this implementation, other implementations obtained by ordinary technicians in this field without any creative work are all within the scope of protection of the present invention.

Claims

1. A high elastic racket, characterized in that: It includes a first layer board, two second layer boards, and an edge layer. The first layer board is fixedly connected between the two second layer boards to form a laminated structure. The edge layer is fixedly connected to the outer peripheral side of the laminated structure. The first layer board is made of PET material, and the two second layer boards are both made of EPP material.

2. The high elasticity racket according to claim 1, characterized in that: The thickness of the first layer is a, the thickness of the second layer is b, and the ratio of a to b is 4 to 3.

3. The high elasticity racket according to claim 2, characterized in that: The thickness of the first layer is 5-7 mm.

4. The high elasticity racket according to claim 3, characterized in that: The thickness of the first layer is 6 mm.

5. The high elasticity racket according to claim 1, characterized in that: The thickness of the edge layer is 1.8-2.2 mm.

6. The high elasticity racket according to claim 1, characterized in that: The edge layer is made of foaming material.

7. The high elasticity racket and its production process according to claim 1, characterized in that: The high-elasticity racket also includes a surface layer, which wraps and fixes the surface of the laminated structure and the edge layer.

8. The high elasticity racket according to claim 8, characterized in that: The surface layer is any one of carbon fiber, Kevlar and glass fiber.

9. A production process for a high-elasticity racket, characterized in that: The following steps are involved: S1-laminated structure production, a first layer plate made of PET is fixedly connected between two second layer plates made of EPP by resin to form a laminated structure; S2-edge layer bonding, the edge layer is fixedly connected to the outer peripheral side of the laminated structure by resin; S3-surface layer bonding treatment, the surface layer is fixedly connected to the surface of the laminated structure and the outer peripheral side of the edge layer by resin to form a racket blank; S4-hot pressing, placing the racket blank in the mold for hot pressing to form a finished racket.

10. The high-elasticity racket and its production process according to claim 9, characterized in that: The hot pressing process comprises: The racket blank is placed in a mold for hot pressing processing at a temperature of 125 to 135 degrees Celsius, and the racket blank is compressed in thickness by a compression amount of 11% to 16%.

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