Ball manufacturing method and ball

Abstract

The invention relates to the technical field of ball manufacturing, and provides a ball manufacturing method and a ball. The manufacturing method of the ball comprises the following steps: providing a ball bladder, and installing an air tap on the ball bladder; the surface area of the bladder is coated with first coating glue, and first ball cloth is pasted to the surface coated with the first coating glue; the area, located around the air nozzle, of the ball bladder is coated with second coating glue, and second ball cloth is pasted to the area coated with the second coating glue; the first ball cloth and the second ball cloth are spliced to completely wrap the ball bladder, so that a bladder cloth assembly is formed; the bladder cloth assembly and the bladder are placed in a spherical mold together to be heated and vulcanized, in the vulcanization process, the bonding performance of the first coating glue is reduced, and the bonding performance of the second coating glue is kept; and the ball skin is pasted on the outer surface of the vulcanized liner cloth assembly to form a finished ball. The bladder and the bladder cloth assembly of the finished ball are separated, the elasticity of the ball can be effectively reduced, and the use experience of a user is met.

Description

Technical Field

[0001] This invention relates to the field of ball manufacturing technology, and more particularly to a method for manufacturing a ball and a ball. Background Technology

[0002] In the field of sports, various ball sports are beloved by people of all ages worldwide due to their unique competitiveness, fun, and teamwork. Mainstream ball sports such as football, basketball, and volleyball not only boast a large participating population but have also built a vast sports industry system encompassing multiple aspects including event operation, equipment production, and training and education. Among these, ball sports equipment, as a core element of the sport, directly impacts the effectiveness of the activity and the participants' experience.

[0003] The excitement of ball sports is closely related to the player's performance and the ball's inherent performance. However, many balls currently on the market are overly bouncy. An excessively bouncy ball greatly increases the difficulty of ball control, significantly reducing the user experience. Summary of the Invention

[0004] This application aims to at least solve one of the technical problems existing in the related art. To this end, this application proposes a method for manufacturing a ball, producing a finished ball in which the bladder and bladder cloth components are separated, effectively reducing the ball's elasticity and improving the user experience.

[0005] This application also proposes a ball.

[0006] A method for manufacturing a ball according to an embodiment of the first aspect of this application includes: Provide a bladder, and install an air valve on the bladder; A first coating adhesive is applied to the surface area of ​​the bladder, and a first ball cloth is adhered to the surface coated with the first coating adhesive. A second coating adhesive is applied to the area of ​​the bladder surrounding the nozzle, and a second ball cloth is then attached to the area coated with the second coating adhesive. The first ball fabric and the second ball fabric are spliced ​​together to completely wrap the ball bladder, thereby forming a bladder fabric assembly; The bladder assembly, together with the bladder, is placed in a spherical mold for heating and vulcanization. During the vulcanization process, the adhesive properties of the first coated adhesive decrease, while the adhesive properties of the second coated adhesive remain unchanged. A ball skin is attached to the outer surface of the vulcanized liner assembly to form a finished ball.

[0007] According to the ball manufacturing method of the present application embodiment, the bladder assembly together with the bladder is placed in a spherical mold for heating and vulcanization. During the vulcanization process, the adhesive properties of the first coated adhesive are reduced, while the adhesive properties of the second coated adhesive are maintained, so as to produce a finished ball in which the bladder and the bladder assembly are separated, effectively reducing the elasticity of the ball and meeting the user's experience.

[0008] According to one embodiment of this application, the first coating adhesive is a thermodegradable adhesive, and the second coating adhesive is a heat-resistant adhesive.

[0009] According to one embodiment of this application, the heat vulcanization is carried out at a preset temperature of 140°C to 160°C.

[0010] According to one embodiment of this application, during the vulcanization process, the adhesive properties of the first coated adhesive are reduced to a state where the bladder and the main body of the bladder fabric assembly can be separated from each other.

[0011] According to one embodiment of this application, the first coating adhesive is applied to the inner surface of the first ball fabric, and / or, the second coating adhesive is applied to the inner surface of the second ball fabric.

[0012] According to one embodiment of this application, the bladder is a thermoplastic polyurethane bladder; the first ball fabric and the second ball fabric are fiber ball fabrics.

[0013] According to one embodiment of this application, splicing the first ball fabric and the second ball fabric to completely wrap the bladder, thereby forming a bladder fabric assembly, includes: The first ball fabrics are connected to each other by a third coating adhesive, the second ball fabrics are connected to each other by a third coating adhesive, and the first ball fabrics and the second ball fabrics are connected by a third coating adhesive, wherein the adhesive properties of the third coating adhesive are maintained during the vulcanization process.

[0014] A ball according to a second aspect embodiment of this application includes: The bladder, which is equipped with an air valve; The bladder assembly is wrapped around the bladder. The bladder and the bladder assembly are fixedly connected in the area around the air nozzle. The bladder and the bladder assembly are separable or non-adhesive in the main body area outside the area around the air nozzle. The ball skin is attached to the outside of the bladder assembly.

[0015] According to one embodiment of this application, the bladder assembly includes: a second ball cloth fixed to the area surrounding the air nozzle; and a first ball cloth covering the main body area of ​​the bladder; the first ball cloth and the second ball cloth are spliced ​​together.

[0016] According to one embodiment of this application, the bladder and the bladder cloth assembly are fixedly connected in the area surrounding the air nozzle by a heat-resistant adhesive layer, and / or, there are degradation residues of thermally degradable adhesive in the main body area of ​​the bladder and the bladder cloth assembly.

[0017] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram illustrating the steps of the ball manufacturing method provided in the embodiments of this application.

[0020] Figure 2 This is a cross-sectional structural diagram of the bladder assembly and bladder provided in the embodiments of this application.

[0021] Figure 3 This is a schematic diagram of the structure of the bladder assembly and the bladder provided in the embodiments of this application.

[0022] Figure 4 This is a schematic diagram of the structure of the finished ball with a ball skin pasted on the outer surface of the vulcanized liner assembly, as provided in the embodiments of this application.

[0023] Figure 5 This is a schematic diagram showing the dimensions of the bladder assembly and the bladder according to one embodiment of this application.

[0024] Figure label: 100. Ball bearing; 200. Air valve; 300. Liner assembly; 400, ball skin. Detailed Implementation

[0025] The embodiments of this application will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this application, but should not be used to limit the scope of this application.

[0026] In the description of the embodiments of this application, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to fixed connections or detachable connections, wherein a fixed connection can include an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0028] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0029] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the embodiments of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0030] It should be noted that the ball mentioned in this application can be any kind of ball, such as a football, basketball, volleyball, or rugby ball.

[0031] The following is combined Figures 1-5 The invention describes a method for manufacturing a ball and the ball itself.

[0032] A method for manufacturing a ball according to an embodiment of this application includes steps 100, 200, 300, 400, 500, and 600.

[0033] Step 100: Provide a bladder 100 and install an air nozzle 200 on the bladder 100.

[0034] Step 200: Apply a first coating adhesive to the surface area of ​​the bladder 100 and attach the first ball cloth to the surface coated with the first coating adhesive.

[0035] Step 300: Apply a second coating adhesive to the area of ​​the bladder 100 around the nozzle 200, and attach the second ball cloth to the area coated with the second coating adhesive.

[0036] Step 400: Join the first ball fabric and the second ball fabric together to completely wrap the bladder 100, thereby forming the bladder fabric assembly 300.

[0037] Step 500: Place the bladder assembly 300 together with the bladder 100 in a spherical mold for heating and vulcanization. During the vulcanization process, the adhesive properties of the first coated adhesive decrease, while the adhesive properties of the second coated adhesive remain unchanged.

[0038] Step 600: Attach the ball skin 400 to the outer surface of the vulcanized liner assembly 300 to form the finished ball.

[0039] According to the ball manufacturing method of the present application embodiment, the bladder assembly 300 together with the bladder 100 is placed in a spherical mold for heating and vulcanization. During the vulcanization process, the adhesive properties of the first coated adhesive are reduced, while the adhesive properties of the second coated adhesive are maintained, so that a finished ball in which the bladder 100 and the bladder assembly 300 are separated is produced, which effectively reduces the elasticity of the ball and meets the user's experience.

[0040] In step 100, it is understood that the bladder 100 can be made of elastic and airtight materials such as rubber or thermoplastic polyurethane (TPU) to form a capsule-like structure. Inflation allows the ball to achieve appropriate fullness and elasticity, which is fundamental for the ball to maintain its shape and possess a certain degree of bounce. Next, an air valve 200 is installed on the bladder 100. The air valve 200 primarily serves as a channel for inflation and deflation. Through the air valve 200, gas (such as air) can be injected into the bladder 100 to increase the ball's elasticity, and gas can be released from the bladder 100 when needed, facilitating the ball's storage and transportation.

[0041] In step 200, a first coating adhesive is applied to the surface area of ​​the bladder 100. This first coating adhesive is an viscous substance that firmly adheres the first ball fabric to most of the surface area of ​​the bladder 100. The first ball fabric is typically made of materials such as synthetic fibers, possessing a certain strength and flexibility, protecting the bladder 100, and providing a base for the subsequent adhesion of the ball skin 400. Adhering the first ball fabric to the surface coated with the first coating adhesive provides a degree of protection and support for the bladder 100.

[0042] In step 300, a second coating adhesive is applied to the area of ​​the bladder 100 surrounding the nozzle 200. This area around the nozzle 200 is unique, with different stress conditions and structure compared to other areas, requiring a specially formulated second coating adhesive. A second ball fabric is then adhered to this area coated with the second coating adhesive. This second ball fabric also possesses certain performance characteristics; during subsequent vulcanization, the second coating adhesive maintains its bonding properties, ensuring structural stability around the nozzle 200 and preventing gas leakage and other problems.

[0043] In step 400, the first and second ball fabrics are spliced ​​together to completely cover the bladder 100, thereby forming the bladder fabric assembly 300. The splicing process needs to ensure that the connection between the first and second ball fabrics is tight and flat, so that the bladder fabric assembly 300 can provide comprehensive protection for the bladder 100 and provide a complete base for the subsequent gluing of the ball skin 400.

[0044] In step 500, the bladder assembly 300, together with the bladder 100, is placed in a spherical mold for heating and vulcanization. The spherical mold, with its spherical inner cavity, determines the shape of the final ball, ensuring the ball maintains a regular spherical shape during manufacturing. During vulcanization, heating and the possible addition of vulcanizing agents cause a chemical reaction in the rubber and other materials, altering their physical and chemical properties. At this point, the adhesive properties of the first coated adhesive decrease, meaning the bond between the first bladder and the bladder 100 weakens, allowing the bladder 100 and the bladder assembly 300 to separate to some extent. Meanwhile, the adhesive properties of the second coated adhesive remain, ensuring structural stability around the nozzle 200. This special vulcanization process is a core technology for reducing ball elasticity, allowing the production of a finished ball where the bladder 100 and the bladder assembly 300 are separated, effectively reducing the ball's elasticity.

[0045] In step 600, a ball skin 400 is adhered to the outer surface of the vulcanized liner assembly 300. The ball skin 400 is the outermost material of the ball and is in direct contact with the outside environment. After the ball skin 400 is adhered, a finished ball that meets the requirements is formed, satisfying the user's needs for ball performance and user experience.

[0046] According to one embodiment of this application, the first coating adhesive is a thermodegradable adhesive, and the second coating adhesive is a heat-resistant adhesive.

[0047] First, thermodegradable adhesive is a type of glue whose internal chemical bonds break and molecular structure is destroyed when specific thermal conditions are reached, resulting in a significant reduction or even loss of adhesive performance. At room temperature, thermodegradable adhesive has good adhesion and can bond objects together as firmly as ordinary glue. When it is applied as the first coating adhesive to most of the surface area of ​​the bladder 100, and the first ball fabric is adhered to the surface coated with the first coating adhesive, in the initial stage, the first ball fabric can adhere tightly to the bladder 100, providing a certain degree of protection and support for the bladder 100, and also laying the foundation for subsequent splicing with other ball fabrics and bonding of the ball skin 400.

[0048] During the subsequent heating and vulcanization process of placing the bladder assembly 300 together with the bladder 100 in a spherical mold, the thermally degradable adhesive undergoes a degradation reaction due to the hot vulcanization environment. Its internal chemical structure is disrupted, and the intermolecular forces weaken, significantly reducing the adhesive performance of the first coating adhesive. This weakens the bond between the first bladder assembly and the bladder 100, allowing the bladder 100 and the portion of the bladder assembly 300 formed by the first bladder assembly to separate to some extent. This separation alters the force distribution and motion of the bladder 100 within the ball. When the ball is subjected to external forces, the rebound of the bladder 100 is no longer as strong as in a traditional ball, effectively reducing the overall elasticity of the ball. This results in a softer rebound during movement, better meeting the user's need for moderate ball elasticity and improving the user experience.

[0049] Heat-resistant adhesives are glues that maintain stable performance in high-temperature environments. They possess a unique chemical structure and composition that prevents them from easily decomposing or undergoing chemical changes when heated, thus maintaining strong adhesive properties over time.

[0050] The valve 200 serves as the channel for inflating and deflating the ball, and its sealing and structural strength directly affect the ball's performance. During the heat vulcanization process, although the overall environment is at a high temperature, the heat-resistant adhesive maintains stable bonding properties, ensuring a tight bond between the second ball fabric and the bladder 100 around the valve 200. This forms a robust structure, preventing gas leakage during use and maintaining the ball's proper inflation. Simultaneously, it ensures the connection stability between the bladder 100 and the bladder fabric assembly 300 near the valve 200, preventing loosening of local structures from affecting the overall quality of the ball and ensuring good performance and stability during play.

[0051] According to one embodiment of this application, the heat vulcanization is carried out at a preset temperature of 140°C to 160°C.

[0052] During the heat curing stage, the bladder assembly 300, together with the bladder 100, is placed in a spherical mold and cured at a preset temperature of 140°C to 160°C. This temperature range has been carefully designed and experimentally verified, precisely within the optimal range for the degradation reaction of the thermodegradable adhesive. At this temperature, the chemical bonds within the thermodegradable adhesive break down rapidly, and the molecular structure is quickly destroyed. As the curing time progresses, its adhesive properties decrease significantly and relatively steadily. This causes the adhesion between the first bladder fabric and the bladder 100, coated with thermodegradable adhesive and bonded with the first bladder fabric, to gradually weaken during curing. Ultimately, the bladder 100 and the portion of the bladder assembly 300 formed by the first bladder fabric can be separated to a certain extent.

[0053] Temperatures of 140℃ to 160℃ are within the tolerance range for the heat-resistant adhesive, allowing it to maintain a stable chemical structure and properties under these thermal conditions. Therefore, during the heat vulcanization process, the heat-resistant adhesive coated around the nozzle 200 can still maintain strong adhesion, ensuring that the second ball cloth and the bladder 100 are tightly bonded around the nozzle 200, forming a robust and well-sealed structure.

[0054] According to one embodiment of this application, during the vulcanization process, the adhesive properties of the first coated adhesive are reduced to a state where the bladder 100 and the main body of the bladder cloth assembly 300 can be separated from each other.

[0055] During the vulcanization process, the adhesive properties of the first coating adhesive are reduced to a state where the bladder 100 and the main body of the bladder assembly 300 can be separated from each other. In the structure of a conventional ball, the bladder 100 and the bladder assembly 300 are tightly bonded, and the bladder 100 has a large rebound force when subjected to external impact, resulting in high ball elasticity. However, in this application, the bladder 100 and the main body of the bladder assembly 300 can be separated from each other. When the ball is subjected to external force, the rebound of the bladder 100 is limited to a certain extent because some energy is consumed in the relative motion between the bladder 100 and the bladder assembly 300, thereby effectively reducing the overall elasticity of the ball. This reduced elasticity makes the ball's rebound during movement softer, better meeting the user's need for moderate ball elasticity.

[0056] According to one embodiment of this application, the first coating adhesive is applied to the inner surface of the first ball fabric, and / or, the second coating adhesive is applied to the inner surface of the second ball fabric.

[0057] Understandably, when the first layer of adhesive is evenly applied to the inner surface of the first ball fabric before it is glued to the bladder 100, the adhesive can be more evenly distributed on the contact surface between the bladder 100 and the first ball fabric. This even distribution of adhesive can form a more stable and firm initial bond, laying a good foundation for subsequent processing operations and the performance of the ball.

[0058] Similarly, when the second adhesive is evenly applied to the inner surface of the second ball fabric before it is glued to the bladder 100, the adhesive can be more evenly distributed on the contact surface between the bladder 100 and the second ball fabric. This uniform adhesive distribution can form a more stable and firm initial bond, laying a good foundation for subsequent processing operations and the performance of the ball.

[0059] According to one embodiment of this application, the bladder 100 is a thermoplastic polyurethane bladder 100; the first ball cloth and the second ball cloth are fiber ball cloths.

[0060] According to one embodiment of this application, splicing the first ball fabric and the second ball fabric to completely wrap the bladder 100, thereby forming the bladder fabric assembly 300, includes: The first ball fabrics are connected to each other by a third coating adhesive, the second ball fabrics are connected to each other by a third coating adhesive, and the first ball fabrics and the second ball fabrics are connected by a third coating adhesive, wherein the adhesive properties of the third coating adhesive are maintained during the vulcanization process.

[0061] The third coating adhesive possesses excellent adhesion and flexibility. After being applied to the edge of the first spherical fabric, it quickly fuses with the fabric material, forming a stable bond. In subsequent processes, such as when the bladder assembly 300 is placed in the spherical mold for vulcanization, the connection between the first spherical fabrics will not loosen or crack due to external forces, ensuring the structural integrity of the bladder assembly 300. Similarly, the second spherical fabrics are also connected using the third coating adhesive, further strengthening the overall structure around the nozzle 200. In subsequent processes, such as when the bladder assembly 300 is placed in the spherical mold for vulcanization, the connection between the second spherical fabrics will not loosen or crack due to external forces, ensuring the structural integrity of the bladder assembly 300. When the third coating adhesive connects the first and second spherical fabrics, the two are joined to form a seamless whole that encapsulates the bladder 100. After vulcanization, the bladder assembly 300 has formed a robust, complete, and well-sealed structure that effectively encapsulates the bladder 100.

[0062] According to a second aspect embodiment of this application, please refer to... Figures 2 to 5 The balls include: A bulb 100, wherein an air nozzle 200 is provided on the bulb 100; The bladder assembly 300 is wrapped around the bladder 100. The bladder 100 and the bladder assembly 300 are fixedly connected in the area around the air nozzle 200. The bladder 100 and the bladder assembly 300 are separable or non-adhesive in the main body area outside the area around the air nozzle 200. The ball skin 400 is attached to the outside of the bladder assembly 300.

[0063] Understandably, the structure of this ball can be formed based on the manufacturing process described above. The bladder 100 and the main body area of ​​the bladder assembly 300 are separable or non-adhesive, reducing the overall elasticity of the ball. During ball movement, this structure allows the bladder 100 to have some room to move relative to the bladder assembly 300, reducing the constraint of the bladder assembly 300 on the bladder 100, thereby changing the ball's elastic response and giving the ball unique elastic characteristics to meet the specific needs of certain sports scenarios or users for ball elasticity.

[0064] According to one embodiment of this application, the bladder assembly 300 includes: a second ball cloth fixed to the area surrounding the air nozzle 200; and a first ball cloth covering the main body area of ​​the bladder 100; the first ball cloth and the second ball cloth are spliced ​​together.

[0065] According to one embodiment of this application, the bladder 100 and the bladder cloth assembly 300 are fixedly connected in the area surrounding the air nozzle 200 by a heat-resistant adhesive layer, and / or, there are degradation residues of thermally degradable adhesive between the bladder 100 and the main body area of ​​the bladder cloth assembly 300.

[0066] The following are elasticity tests conducted by this application on two different types of bladders 100, one using a conventional pre-made ball and the other using the manufacturing method described in this application:

[0067] In the rebound height test, the samples performed as follows at 20°C: the rebound height of the rubber bladder patch was 136 to 139 cm; the rebound height of the rubber bladder-bladder fabric separation was 140 to 145 cm; and the rebound height of the TPU inner bladder-bladder fabric separation was 145 to 150 cm. At a low temperature of 5°C, the rebound height of the rubber bladder patch was 126 to 128 cm; the rebound height of the rubber bladder-bladder fabric separation was 130 to 135 cm; and the rebound height of the TPU inner bladder-bladder fabric separation was 132 to 136 cm.

[0068] Compression deformation tests were conducted under a load of 400 Newtons, primarily examining displacement and deformation. In terms of displacement, the rubber bladder-fabric separation displacement was 25 mm, the rubber bladder-fabric separation displacement was 29 mm, and the TPU inner bladder-fabric separation displacement was 31 mm.

[0069] Finally, in the impact test, the rubber bladder patch sample withstood 2,000 impacts, while the two bladder patch separation samples (rubber and TPU) successfully passed 5,000 impact tests, and all samples were undamaged.

[0070] In one embodiment, the dimensions of the bladder assembly and the bladder are as follows: Figure 5 As shown.

[0071] It should be noted that all embodiments described herein are merely exemplary and do not constitute any limitation on the scope of protection claimed in this application.

[0072] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method of making a ball, characterized by, The application relates to a method for manufacturing a football, comprising the following steps: providing a bladder and mounting a valve on the bladder; applying a first coating glue on a surface area of the bladder and pasting a first ball cloth on the surface area coated with the first coating glue; applying a second coating glue on an area of the bladder around the valve and pasting a second ball cloth on the area coated with the second coating glue; splicing the first ball cloth and the second ball cloth to completely wrap the bladder, so as to form a bladder cloth assembly; placing the bladder cloth assembly together with the bladder in a spherical mold for heating vulcanization, during which the bonding property of the first coating glue is reduced and the bonding property of the second coating glue is kept; pasting a ball skin on the outer surface of the vulcanized bladder cloth assembly to form a finished product.

2. The method of claim 1, wherein The first coating glue is a thermal degradation glue and the second coating glue is a heat-resistant glue.

3. The method for manufacturing a ball according to claim 2, characterized in that, The heating vulcanization is performed at a preset temperature of 140 DEG C to 160 DEG C.

4. The method of claim 1, wherein During the vulcanization, the bonding property of the first coating glue is reduced to a state in which the bladder and the main body part of the bladder cloth assembly can be separated from each other.

5. The method of claim 1, wherein The first coating glue is coated on the inner surface of the first ball cloth and / or the second coating glue is coated on the inner surface of the second ball cloth.

6. The method of claim 1 to 5, wherein The bladder is a thermoplastic polyurethane bladder; the first ball cloth and the second ball cloth are fiber ball cloths.

7. The method of claim 1, 2, 3, 4, or 5, wherein The splicing of the first ball cloth and the second ball cloth to completely wrap the bladder to form a bladder cloth assembly comprises: the first ball cloths are connected through third coating glue, the second ball cloths are connected through third coating glue, and the first ball cloths and the second ball cloths are connected through third coating glue, wherein the third coating glue keeps the bonding property during vulcanization.

8. A ball characterized in that, The application relates to a football, comprising: a bladder provided with a valve; a bladder cloth assembly wrapped outside the bladder, wherein the bladder and the bladder cloth assembly are fixedly connected in a surrounding area of the valve and can be separated or are not bonded in a main body area outside the surrounding area of the valve; a ball skin pasted outside the bladder cloth assembly.

9. The ball of claim 8, wherein The bladder cloth assembly comprises a second ball cloth fixed in the surrounding area of the valve and a first ball cloth covering the main body area of the bladder; and the first ball cloth and the second ball cloth are spliced with each other.

10. The ball of claim 8, wherein The bladder and the bladder cloth assembly are fixedly connected in the surrounding area of the valve through a heat-resistant glue layer, and / or there are degradation residues of thermal degradation glue between the main body area of the bladder and the bladder cloth assembly.

Images