PP honeycomb core material pike racket and production process thereof

Abstract

The invention relates to the technical field of sports equipment, in particular to a PP honeycomb core material Pick racket and a production process thereof. An inner core of the PP honeycomb core material pike racket is made of the PP honeycomb core material, and a non-woven fabric layer and a surface layer are sequentially arranged on each of two sides of the PP honeycomb core material pike racket; in the PP honeycomb core material, a rigid supporting piece is embedded in a PP pipe in a sweet area. Meanwhile, the invention further provides a production process of the PP honeycomb core material Pick racket. According to the racket, the rigid supporting piece is additionally arranged in the sweet area, so that the rigidity of the sweet area is remarkably enhanced, the deformation degree of the sweet area during batting is effectively reduced, batting is more accurate, force transmission is more direct and efficient, better batting experience is brought to players, and the requirements of different levels of players for high-quality rackets are met.

Description

Technical Field

[0001] The present invention relates to the technical field of sports equipment, and particularly belongs to a Pickleball racket with a PP honeycomb core material and its production process. Background Art

[0002] In the current Pickleball sport, rackets with polypropylene (PP) honeycomb core materials are widely used. However, when such rackets are actually used, the sweet spot, as the main hitting area, bears frequent and large impacts, causing the PP honeycomb core material to easily deform. This not only affects the accuracy of hitting and the effectiveness of power transmission, reducing the hitting experience of players, but also in the long run, the deformation of the sweet spot will cause damage to the racket structure and shorten the service life of the racket. Therefore, there is an urgent need to improve the rigidity of the sweet spot of the PP honeycomb core material racket to enhance its overall performance. Summary of the Invention

[0003] The present invention provides a Pickleball racket with a PP honeycomb core material to achieve the purpose of improving hitting accuracy and power transmission efficiency and extending the service life of the racket.

[0004] Meanwhile, the present invention also provides the production process of the above-mentioned Pickleball racket with a PP honeycomb core material.

[0005] A Pickleball racket with a PP honeycomb core material has a PP honeycomb core material as the inner core, and on each of the two sides, there are successively arranged a non-woven fabric layer and a surface layer;

[0006] In the PP honeycomb core material, a rigid support is embedded in the PP tubes in the sweet spot.

[0007] Preferably, in the PP honeycomb core material, the PP tubes are covered with a POE film, and adjacent PP tubes are melt-bonded through the POE film.

[0008] Preferably, the rigid support is a bead or a column, and the material is metal or plastic.

[0009] Preferably, the installation quantity of the rigid support is 60%-80% of the total number of PP tubes in the sweet spot.

[0010] Preferably, the rigid support is fixed in the PP tube through a high-strength binder.

[0011] Preferably, the total thickness of the surface layer is 0.1-0.5 mm; it is a carbon fiber layer and / or a glass fiber layer.

[0012] Preferably, when the surface layer is a carbon fiber layer and a glass fiber layer, the glass fiber layer accounts for 50%-60% of the total mass of the surface layer; and the glass fiber layer is the outer layer.

[0013] The production process of the above-mentioned Pickleball racket with a PP honeycomb core material includes the following steps:

[0014] S1: Melt and extrude PP particles to form a PP pipe, and cover the outer surface of the PP pipe with a POE film;

[0015] S2: Inject a high-strength binder into 60%-80% of the total number of PP pipes in the sweet area. Then, press the beads into the core board from one side and bond and fix the beads; or press the columns into the PP pipes and bond and fix the columns with a high-strength binder. Heat the PP pipes pre-installed with beads or columns together with other ordinary PP pipes through a hot-melt process at a temperature of 180-200°C and a pressure of 0.5-1 MPa, so that the POE film covering the outer surface of the PP pipes melts, and adjacent PP pipes are bonded through the melted POE film to form a complete honeycomb core board structure;

[0016] S3: Bond non-woven fabrics to both sides of the core material obtained in S2 respectively; coat the glue film on both sides of the PP honeycomb core material and perform hot pressing and compounding with the non-woven fabric, and control the hot pressing temperature at 120-140°C and the pressure at 1-1.5 MPa;

[0017] S4: After laying the surface layer, perform hot pressing for 1.5-2.5 h at a temperature of 160-180°C and a pressure of 3-5 MPa to form the surface layer;

[0018] S5: Cold press and combine the surface layer outside the non-woven fabric layer, with a cold pressing pressure of 2-3 MPa and a time of 4-6 h;

[0019] S6: Trim the edges, polish the surface of the completed composite racket.

[0020] Preferably, the production process of the PP honeycomb core material pick racket further includes appearance decoration.

[0021] Advantages of the present invention:

[0022] 1. In the present invention, by adding rigid support members in the sweet area, the rigidity of the sweet area is significantly enhanced, effectively reducing the degree of deformation of the sweet area during hitting, making the hitting more accurate, and the power transmission more direct and efficient, bringing a better hitting experience to players and meeting the needs of players at different levels for high-quality rackets.

[0023] 2. The improvement of the rigidity of the sweet area greatly reduces the deformation of the racket caused by long-term hitting, extends the service life of the racket, that is, reduces the replacement frequency, and saves costs for users.

[0024] 3. Compared with comprehensively improving the rigidity by using expensive new materials, the method of adding beads or columns in the local PP pipes in the sweet area of the present invention can effectively improve the performance while better controlling the cost, and the lower cost is conducive to the promotion of the product in the market. Brief Description of the Drawings

[0025] Figure 1 It is a schematic structural diagram of the present invention;

[0026] Figure 2 For Figure 1 Structural schematic diagram at the middle section plane;

[0027] Figure 3 Multi-layer decomposition structural schematic diagram of the present invention;

[0028] Figure 4 Structural schematic diagram of the surface layer;

[0029] Figure 5 Structural schematic diagram of the steel ball structure of the rigid support member of the present invention;

[0030] In the figure: 1, core material; 2, non-woven fabric layer; 3, surface layer; 4, bead; 5, column; 6, carbon fiber layer; 7, glass fiber layer; 8, side strip; 9, handle skin; 10, rubber ring; 11, back cover. Specific embodiments

[0031] The technical solution of the present invention will be further explained and illustrated below through specific embodiments.

[0032] Embodiment 1

[0033] Referring to the accompanying drawings, the present invention provides a Pickleball racket with a PP honeycomb core material. The inner core is a PP honeycomb core material 1. On both sides, a non-woven fabric layer 2 and a surface layer 3 are successively provided on each side; at the edge of the racket part of the Pickleball racket, a side strip 8 is also fixed, outside the handle, a handle skin 9 is sleeved, at the connection position between the handle and the racket part, a rubber ring 10 is sleeved; at the rear side of the handle, a back cover 11 is also installed;

[0034] In the PP honeycomb core material, a POE film is coated outside the PP pipe, and adjacent PP pipes are melt-bonded through the POE film; a rigid support member is embedded in the PP pipes in the sweet spot; the rigid support member is fixed in the PP pipe through a high-strength adhesive, and the rigid support member is a steel ball or a steel column or a plastic ball or a plastic column. The coverage area of the rigid support member is 60%-80% of the sweet spot.

[0035] The surface layer is a carbon fiber layer 6 and / or a glass fiber layer 7; the total thickness of the surface layer is 0.1-0.5 mm; when the surface layer is a carbon fiber layer and a glass fiber layer, the glass fiber layer accounts for 50%-60% of the total mass of the surface layer; and the glass fiber layer is the outer layer;

[0036] The specific composition of the surface layer is selected from carbon fiber single-layer raw materials and / or glass fiber single-layer raw materials.

[0037] Embodiment 2

[0038] The production process of the Pickleball racket with a PP honeycomb core material in the present invention includes the following steps:

[0039] S1: PP particles are hot-melt extruded into PP pipes, and a POE film is coated outside the PP pipes;

[0040] S2: Inject a high-strength binder, epoxy-based binder, into 60% of the total number of PP pipes in the sweet area. After curing, the shear strength is ≥20 MPa. Then, press the steel balls 4 into the board core from one side to bond and fix the steel balls, which are regularly and densely distributed. The diameter of the steel balls is set at 4 mm. Carry out a hot-melt process on the PP pipes pre-loaded with steel balls and other ordinary PP pipes together at a temperature of 200 °C and a pressure of 0.8 MPa to melt the POE film coated on the outer surface of the PP pipes. Adjacent PP pipes are bonded by the melted POE film to form a complete honeycomb core board structure;

[0041] S3: Bond non-woven fabrics on both sides of the core material obtained in S2; coat the glue film on both sides of the PP honeycomb core material and carry out hot-pressing and compounding with the non-woven fabric. The hot-pressing temperature is controlled at 140 °C and the pressure is 1.5 MPa;

[0042] S4: The surface layer is a carbon fiber layer with a thickness of 0.4 mm. After laying, hot-press for 2.0 h at a temperature of 180 °C and a pressure of 5 MPa to form the surface layer;

[0043] S5: Cold-press and combine the surface layer outside the non-woven fabric layer. The cold-pressing pressure is 3 MPa and the time is 6 h;

[0044] S6: Trim the edges, polish the surface of the composite racket;

[0045] S7: The production process of the PP honeycomb core Pickleball racket also includes appearance decoration.

[0046] Manufacture the racket according to the manufacturing process of Example 2. After testing, the rigidity of the sweet area is increased by 35%, the hitting accuracy is improved by 22%, and there is no obvious damage to the sweet area after hitting continuously 1200 times.

[0047] Example 3

[0048] The production process of the PP honeycomb core Pickleball racket in Example 1 includes the following steps:

[0049] S1: The PP pipes are hot-melt extruded from PP particles of 1200HS, with a diameter of 8 mm and a wall thickness of 0.15 mm. The outer surface of the PP pipes is coated with a POE film;

[0050] S2: Inject a high-strength binder into 70% of the total number of PP pipes in the sweet area. Press the steel columns into the PP pipes, which are regularly and densely distributed. Bond and fix the steel columns 5 with the high-strength binder. The diameter of the steel columns is 7 mm and the length is 10 mm. Carry out a hot-melt process on the PP pipes pre-loaded with steel columns and other ordinary PP pipes together at a temperature of 190 °C and a pressure of 1 MPa to melt the POE film coated on the outer surface of the PP pipes. Adjacent PP pipes are bonded by the melted POE film to form a complete honeycomb core board structure;

[0051] The thickness of the PP honeycomb core board is 12 mm and the density is 68 kg / m 3 , and the compression strength is ≥1.6 MPA, providing the basic support and buffering performance for the racket;

[0052] S3: Bond non-woven fabrics on both sides of the core material obtained in S2 respectively; evenly coat a PP non-woven fabric film on both sides of the formed PP honeycomb core material, and then perform hot pressing and lamination with PET non-woven fabric; control the hot pressing temperature at 130 °C and the pressure at 1.3 MPa to make the non-woven fabric closely adhere to the PP honeycomb core material; bond through the PP non-woven fabric film with the PP honeycomb core material and the surface layer; the PET non-woven fabric has a large tensile strength and a strong adhesive force with the honeycomb core and the surface layer, which can improve the bending strength and compressive strength of the overall structure, ensure the flatness of the surface layer, and enhance the stability of the racket structure;

[0053] S4: After the surface layer is laid, hot press for 1.8 h under the conditions of a temperature of 170 °C and a pressure of 4 MPa to form the surface layer; when it is composed of multiple layers of carbon fiber layers and multiple layers of glass fiber layers, the carbon fiber layer is a molded sheet of epoxy carbon fiber prepreg with a single-layer thickness of 0.2 mm, endowing the racket surface with sufficient hardness and compressive strength to ensure stability during hitting; the glass fiber layer is composed of epoxy glass fiber semi-cured sheets with a single-layer thickness of 0.1 mm, enhancing the adhesion between the surface layer and the non-woven fabric layer and improving the overall elasticity of the racket, making hitting easier and more labor-saving. The two are molded, with a total thickness of 0.6 mm, and the glass fiber layer accounts for 60% of the total mass of the surface layer.

[0054] S5: Outside the non-woven fabric layer, cold press and combine with the surface layer, with a cold press pressure of 2 MPa and a time of 4 h;

[0055] S6: Trim the edges of the composite racket, with the edge accuracy reaching ±0.5 mm, perform surface grinding and polishing treatments, and improve the surface finish to Ra0.8 - 1.6 μm.

[0056] S7: Perform appearance decoration, print brand logos and patterns to complete the production of the racket.

[0057] After testing, the rigidity of the sweet spot is increased by 42%, the power transmission efficiency is increased by 28%, and the racket performance is stable after 1500 consecutive hits.

[0058] Example 4

[0059] The production process of the Peak racket with a PP honeycomb core material in Example 1 includes the following steps:

[0060] S1: The PP pipe is formed by hot melting and extrusion of PP particles, with a diameter of 8 mm and a wall thickness of 0.15 mm, and a POE film is coated on the outside of the PP pipe;

[0061] S2: Inject polyurethane binder into 80% of the total number of PP pipes in the sweet area. After firmly bonding, press plastic beads into the board core from one side, bond and fix the plastic beads, with regular and dense distribution. The diameter of the plastic beads is set at 7 mm. Then, perform hot melt process on the PP pipes preloaded with plastic beads and other ordinary PP pipes at a temperature of 180 °C and a pressure of 0.5 MPa, so that the POE film coated on the outer surface of the PP pipes melts, and adjacent PP pipes are bonded through the melted POE film to form a complete honeycomb core board structure.

[0062] The thickness of the PP honeycomb core board is 13 mm, and the density is 70 kg / m 3 , with a compressive strength of 1.5 MPa, providing basic support and buffering performance for the racket.

[0063] S3: Bond non-woven fabrics on both sides of the core material obtained in S2 respectively; evenly coat the PP non-woven fabric film on both sides of the formed PP honeycomb core material, and then perform hot pressing and compounding with the PET non-woven fabric. The hot pressing temperature is controlled at 120 °C, and the pressure is 1.1 MPa, so that the non-woven fabric is closely attached to the PP honeycomb core material; bond through the PP non-woven fabric film with the PP honeycomb core material and the surface layer. The PET non-woven fabric has a large tensile strength, strong adhesion with the honeycomb core and the surface layer, can improve the bending strength and compressive strength of the overall structure, ensure the flatness of the surface layer, and enhance the stability of the racket structure.

[0064] S4: After laying the surface layer, perform hot pressing for 1.5 h at a temperature of 160 °C and a pressure of 3 MPa to form the surface layer. When composed of a carbon fiber layer and a glass fiber layer, the thickness of the carbon fiber layer is 0.4 mm; the thickness of the glass fiber layer is 0.1 mm. The two are formed by die pressing, with a total thickness of 0.5 mm, and the glass fiber layer accounts for 50% of the total mass of the surface layer.

[0065] S5: Cold press and combine the surface layer outside the non-woven fabric layer, with a cold press pressure of 2.5 MPa and a time of 5 h.

[0066] S6: Trim the edges of the composite racket, with the edge accuracy reaching ±0.5 mm, perform surface grinding and polishing treatment, and improve the surface finish to Ra0.8 - 1.6 μm.

[0067] S7: Perform appearance decoration, print brand logos and patterns to complete the production of the racket.

[0068] Example 5

[0069] The production process of the Peak brand racket with a PP honeycomb core material in Example 1 includes the following steps:

[0070] S1: The PP pipes are formed by hot melt extrusion of PP particles, with a diameter of 6 mm and a wall thickness of 0.15 mm, and the outer surface of the PP pipes is coated with a POE film.

[0071] S2: Inject silicone-modified epoxy binder into 75% of the total number of PP pipes in the sweet spot area. Press the plastic columns into the PP pipes, with regular and dense distribution. Use a high-strength binder to bond and fix the plastic columns with a diameter of 5 mm and a length of 14 mm. Heat melt the PP pipes with pre-installed plastic columns and other ordinary PP pipes together at a temperature of 185 °C and a pressure of 1 MPa, so that the POE film coated on the outer surface of the PP pipes melts. Adjacent PP pipes are bonded through the melted POE film to form a complete honeycomb core board structure;

[0072] The thickness of the PP honeycomb core board is 14 mm, and the density is 66 kg / m 3 , with a compressive strength of 1.7 MPA, providing basic support and buffering performance for the racket;

[0073] S3: Bond non-woven fabrics on both sides of the core material obtained in S2 respectively; evenly coat the PP non-woven fabric film on both sides of the formed PP honeycomb core material, and then perform hot pressing and lamination with PET non-woven fabric. Control the hot pressing temperature at 125 °C and the pressure at 1.0 MPa to make the non-woven fabric closely fit with the PP honeycomb core material; bond through the PP non-woven fabric film with the PP honeycomb core material and the surface layer; The PET non-woven fabric has a large tensile strength and a strong adhesion force with the honeycomb core and the surface layer, which can improve the bending strength and compressive strength of the overall structure, ensure the flatness of the surface layer, and enhance the stability of the racket structure;

[0074] S4: After laying the surface layer, hot press for 2.5 h under the conditions of a temperature of 175 °C and a pressure of 3.5 MPa to form the surface layer; when composed of a carbon fiber layer and a glass fiber layer, the thickness of the carbon fiber layer is 0.25 mm; the thickness of the glass fiber layer is 0.25 mm. The two are formed by die pressing, with a total thickness of 0.5 mm, and the glass fiber layer accounts for 58% of the total mass of the surface layer.

[0075] S5: Cold press and combine the surface layer outside the non-woven fabric layer, with a cold press pressure of 2.2 MPa and a time of 4.5 h;

[0076] S6: Trim the edges of the composite racket, with the edge accuracy reaching ±0.5 mm, perform surface grinding and polishing treatment, and improve the surface finish to Ra0.8 - 1.6 μm.

[0077] S7: Carry out appearance decoration, print brand logos and patterns to complete the production of the racket.

[0078] After testing, the rigidity of the sweet spot is increased by 45%, the energy feedback during hitting is clearer, players can better control the hitting force, and after hitting continuously 1600 times, only slight wear appears in the sweet spot, and the overall performance of the racket is still good.

[0079] Example 6

[0080] The production process of the PP honeycomb core badminton racket in Example 1 includes the following steps:

[0081] S1: The PP pipe is formed by hot melting and extrusion of PP particles, and a POE film is coated on the outside of the PP pipe;

[0082] S2: Inject a thermosetting phenolic resin binder into 75% of the total number of PP pipes in the sweet area, press 7-mm steel balls into the PP pipes, and distribute them regularly and densely; subject the PP pipes pre-installed with plastic columns and other ordinary PP pipes to a hot melting process together at a temperature of 195°C and a pressure of 0.6 MPa, so that the POE film coated on the outside of the PP pipes melts, and adjacent PP pipes are bonded by the melted POE film to form a complete honeycomb core board structure;

[0083] The thickness of the PP honeycomb core board is 14 mm, the density is 69 kg / m 3 , the compressive strength is 1.6 MPA, providing basic support and buffering performance for the racket;

[0084] S3: Bond non-woven fabrics on both sides of the core material obtained in S2; evenly coat a PP non-woven fabric film on both sides of the formed PP honeycomb core material, and then perform hot pressing and compounding with a PET non-woven fabric; control the hot pressing temperature at 135°C and the pressure at 1.4 MPa to make the non-woven fabric closely fit with the PP honeycomb core material; bond through the PP non-woven fabric film with the PP honeycomb core material and the surface layer; the PET non-woven fabric has a large tensile strength and a strong adhesion to the honeycomb core and the surface layer, which can improve the bending strength and compressive strength of the overall structure, ensure the flatness of the surface layer, and enhance the stability of the racket structure;

[0085] S4: After the surface layer is laid, hot press for 2.2 h at a temperature of 178°C and a pressure of 4.7 MPa to form the surface layer; when it is composed of a carbon fiber layer and a glass fiber layer, the thickness of the carbon fiber layer is 0.2 mm; the thickness of the glass fiber layer is 0.1 mm. The two are formed by die pressing, with a total thickness of 0.3 mm, and the glass fiber layer accounts for 52% of the total mass of the surface layer.

[0086] S5: Cold press and combine the surface layer outside the non-woven fabric layer, with a cold press pressure of 2.8 MPa and a time of 5.8 h;

[0087] S6: Trim the edges of the completed composite racket, with the edge accuracy reaching ±0.5 mm, perform surface grinding and polishing, and improve the surface finish to Ra0.8 - 1.6 μm.

[0088] S7: Perform appearance decoration, print brand logos and patterns, and complete the production of the racket.

[0089] After testing, the stiffness in the sweet spot is increased by 48%. In the scenario of high-frequency hitting, the stability advantage of the racket is obvious. After hitting the ball 1400 times continuously, no obvious deformation or damage occurs in each part of the racket structure.

[0090] Example 7

[0091] The production process of the PP honeycomb core Pickleball racket in Example 1 includes the following steps:

[0092] S1: The PP pipe is formed by hot melt extrusion of PP particles, and a POE film is coated on the outside of the PP pipe;

[0093] S2: Inject a thermosetting phenolic resin binder into 75% of the total number of PP pipes in the sweet spot, press 7mm steel balls into the PP pipes, and distribute them regularly and densely; subject the PP pipes pre-installed with plastic columns and other ordinary PP pipes to a hot melt process together, with the temperature at 195°C and the pressure at 0.6MPa, so that the POE film coated on the outside of the PP pipes melts, and adjacent PP pipes are bonded by the melted POE film to form a complete honeycomb core board structure;

[0094] The thickness of the PP honeycomb core board is 14mm, the density is 69kg / m 3 , and the compressive strength is 1.6MPA, providing basic support and buffering performance for the racket;

[0095] S3: Bond non-woven fabrics on both sides of the core material obtained in S2 respectively; evenly coat a PP non-woven fabric film on both sides of the formed PP honeycomb core material, and then perform hot pressing and compounding with a PET non-woven fabric; control the hot pressing temperature at 135°C and the pressure at 1.4MPa to make the non-woven fabric closely fit with the PP honeycomb core material; bond through the PP non-woven fabric film with the PP honeycomb core material and the surface layer; the PET non-woven fabric has a large tensile strength and a strong adhesive force with the honeycomb core and the surface layer, which can improve the bending strength and compressive strength of the overall structure, ensure the flatness of the surface layer, and enhance the stability of the racket structure;

[0096] S4: The surface layer is composed of a glass fiber layer with a thickness of 0.2mm. After laying, it is hot pressed for 2.2h under the conditions of a temperature of 178°C and a pressure of 4.7MPa to form the surface layer;

[0097] S5: Cold press and combine the surface layer outside the non-woven fabric layer, with the cold press pressure of 2.8MPa and the time of 5.8h;

[0098] S6: Trim the edges of the composite racket, with the edge accuracy reaching ±0.5mm, perform surface grinding and polishing treatment, and improve the surface finish to Ra0.8 - 1.6μm.

[0099] S7: Carry out appearance decoration, print brand logos and patterns to complete the production of the racket.

[0100] In order to more intuitively reflect the advantages of the sweet spot enhanced rigid structure in the present invention, a comparative test was conducted. An ordinary Pickleball racket with a common PP honeycomb core material without sweet spot enhancement treatment was selected as the control group and compared with the improved racket in Example 3.

[0101] Rigidity test: Using professional material rigidity test equipment, the same pressure was applied to the sweet spots of the two groups of rackets. The results showed that when the pressure on the sweet spot of the ordinary racket reached 50 N, an obvious 3-mm depression deformation occurred; while for the racket of Example 3 of the present invention, when the pressure reached 80 N, the depression deformation was only 1 mm, which fully proved the remarkable effect of the sweet spot enhanced rigid structure on improving rigidity.

[0102] Hit performance test: Twenty Pickleball players with the same level were invited to conduct hitting training with the two groups of rackets respectively, and the hitting accuracy and power feedback were recorded. After statistics, the hitting accuracy of the players using the racket of the present invention increased by an average of 25%, and the power transfer efficiency increased by an average of 30%. The players generally reported that the hitting was more stable and the control feeling of the ball was stronger.

[0103] Durability test: Simulating a high-intensity game environment, continuous hitting tests were carried out on the two groups of rackets. After 800 continuous hits, obvious deformation and wear appeared in the sweet spot of the ordinary racket, and delamination signs began to appear in some areas; while for the racket of Example 3 of the present invention, after 1500 continuous hits, only slight wear occurred in the sweet spot and the overall structure remained intact, which strongly proved the positive effect of the sweet spot enhanced rigid structure on improving the durability of the racket.

[0104] Through the above specific implementation manners and comparative tests, it can be clearly seen that the present invention effectively improves the rigidity, hit performance and durability of the sweet spot of the Pickleball racket by adding beads or columns into the PP pipes in the sweet spot, and has remarkable technical advantages and practical application values.

Claims

1. A PP honeycomb core Pickleball racket, characterized in that, The inner core is a PP honeycomb core material, and on each of the two sides, a non-woven fabric layer and a surface layer are sequentially provided. In the PP honeycomb core material, a rigid support is embedded in the PP pipes in the sweet area.

2. The PP honeycomb core Pickleball racket according to claim 1, wherein In the described PP honeycomb core material, the PP pipes are covered with a POE film, and adjacent PP pipes are melt-bonded through the POE film.

3. The PP honeycomb core Pickleball racket according to claim 1, wherein The rigid support is a bead or a column, and the material is metal or plastic.

4. The PP honeycomb core Pickleball racket according to claim 1, characterized in that, The installation quantity of the rigid support is 60%-80% of the total number of PP pipes in the sweet area.

5. The PP honeycomb core Pickleball racket according to claim 1, wherein The rigid support is fixed in the PP pipe through a high-strength adhesive.

6. The PP honeycomb core Pickleball racket according to claim 1, wherein The total thickness of the surface layer is 0.1-0.5 mm; it is a carbon fiber layer and / or a glass fiber layer.

7. The PP honeycomb core Pickleball racket according to claim 6, characterized in that, When the surface layer is a carbon fiber layer and a glass fiber layer, the glass fiber layer accounts for 50%-60% of the total mass of the surface layer; and the glass fiber layer is the outer layer.

8. The production process of a PP honeycomb core Pickleball racket according to claim 1, characterized in that, It includes the following steps: S1: PP particles are hot-melt extruded into PP pipes, and the PP pipes are covered with a POE film. S2: In 60%-80% of the total number of PP pipes in the sweet area, a high-strength adhesive is injected, and then the beads are pressed into the board core from one side to bond and fix the beads; or the columns are pressed into the PP pipes, and the columns are bonded and fixed with a high-strength adhesive; the PP pipes pre-installed with beads or columns and other ordinary PP pipes are subjected to a hot-melt process together, the temperature is 180-200 °C, and the pressure is 0.5-1 MPa, so that the POE film covered on the PP pipes melts, and adjacent PP pipes are melt-bonded through the POE film to form a complete honeycomb core board structure. S3: Non-woven fabrics are bonded to both sides of the core material obtained in S2; a film is coated on both sides of the PP honeycomb core material and hot-pressed and compounded with the non-woven fabric, and the hot-pressing temperature is controlled at 120-140 °C, and the pressure is 1-1.5 MPa. S4: After the surface layer is laid, it is hot-pressed for 1.5-2.5 h under the conditions of a temperature of 160-180 °C and a pressure of 3-5 MPa to form the surface layer. S5: The surface layer is cold-pressed and combined with the non-woven fabric layer outside, the cold-pressing pressure is 2-3 MPa, and the time is 4-6 h. S6: The edges of the completed composite racket are trimmed, the surface is polished and buffed.

9. The production process of the PP honeycomb core Pickleball racket according to claim 8, characterized in that, The production process of the described PP honeycomb core material pick racket also includes appearance decoration.

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