PVC (polyvinyl chloride) winding ball bladder and preparation method thereof

Abstract

The invention provides a PVC winding ball bladder and a preparation method thereof.The PVC winding ball bladder is characterized in that yarn is wound on the surface of a PVC ball bladder subjected to air setting, and the PVC ball bladder is prepared from, by weight, 80-150 parts of PVC paste resin powder, 120-250 parts of plasticizer, 80-150 parts of calcium carbonate, 1-6 parts of stabilizer and 2-8 parts of black slurry. According to the PVC winding ball bladder and the preparation process thereof provided by the invention, the PVC winding ball bladder is excellent in rebound resilience, air tightness and aging resistance through experimental tests, can replace a rubber winding ball bladder, and is lower in cost. According to the formula for producing the PVC ball bladder, the PVC paste resin powder, the plasticizer, the calcium carbonate, the stabilizer and the black slurry are adopted, the requirement for winding of the ball bladder is met, the wall of the ball bladder is good in uniformity, durability and deformation resistance, the cost for regular inspection and maintenance is reduced, and the service life of the ball bladder is effectively prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of balls, and in particular to a PVC wound ball bladder and a preparation method thereof. Background Art

[0002] The bladder refers to the inner bladder used in ball sports. It is usually made of rubber and is a soft and elastic sac. It is placed inside the ball and inflated to make the ball elastic. The bladder is an indispensable component in ball sports, and its quality directly affects the performance and service life of the ball. The bladder may leak due to manufacturing defects, aging, or damage from external forces, which in turn affects the use of the ball and may also cause the performance of the ball to deteriorate. In addition, due to poor material quality, some bladders may wear or break after a period of use, resulting in poor durability. The durability of the bladder is usually improved by adjusting the manufacturing process or using high-quality materials. Or by developing new materials, such as developing new bladder materials with better elasticity, wear resistance, and weather resistance, to further improve the performance of the bladder. Summary of the invention

[0003] In view of this, the purpose of the present invention is to provide a PVC wound ball bladder and a preparation method thereof to solve the above problems.

[0004] The technical solution of the present invention is achieved in this way:

[0005] A PVC wound ball bladder, the PVC wound ball bladder comprising yarn wound around the surface of a PVC ball bladder that has been shaped by adding air, the production formula of the PVC ball bladder comprising the following raw materials by weight percentage: 80-150 parts of PVC paste resin powder, 120-250 parts of plasticizer, 80-150 parts of calcium carbonate, 1-6 parts of stabilizer and 2-8 parts of black slurry.

[0006] A further solution is that the production formula of the PVC bladder includes the following raw materials by weight percentage: 80-120 parts of PVC paste resin powder, 150-200 parts of plasticizer, 80-120 parts of calcium carbonate, 1-4 parts of stabilizer and 2-6 parts of black slurry, the plasticizer includes dioctyl terephthalate and / or dioctyl phthalate, the stabilizer includes calcium zinc stabilizer and / or barium zinc stabilizer, and the calcium zinc stabilizer includes at least one of CH400, CH401 or CH402.

[0007] A further solution is that the production formula of the PVC bladder includes the following raw materials, calculated by weight percentage: 85-115 parts of PVC paste resin powder, 165-185 parts of plasticizer, 85-115 parts of calcium carbonate, 2-4 parts of stabilizer and 3-6 parts of black slurry.

[0008] A further solution is that, in parts by weight, the production formula of the PVC wound ball bladder also includes 10 to 20 parts of chlorinated polyethylene and 30 to 40 parts of methacrylic acid-ethyl acrylate copolymer; the mass fraction of chlorine element in the chlorinated polyethylene is 10 to 23%.

[0009] A further solution is that the production process of the PVC bladder comprises the following steps:

[0010] (1) Weigh each component according to the formula, take the plasticizer, add the PVC paste resin powder while stirring at a low speed, increase the stirring speed to a medium speed, add the stabilizer, calcium carbonate and black slurry, stir at a high speed, and evacuate to obtain a plasticized paste;

[0011] (2) After the ball head is inserted into the ball mold bowl, the plasticized paste is added into the ball mold bowl, heated at high temperature, cooled, and air is added to shape the ball to obtain the PVC ball bladder.

[0012] A further solution is that the low speed is 400-600 r / min, the medium speed is 800-1000 r / min, the medium speed stirring time is 10-20 min, the high speed is 1400-1500 r / min, and the high speed stirring time is 10-20 min; the high temperature heating temperature is 260-300°C, and the time is 5-8 min.

[0013] A further solution is that the number of yarns is 3 to 6. The yarns are soaked in PU glue and then wrapped around the surface of the PVC bladder that has been air-shaped. The first winding is completed by wrapping 70 to 90 turns. After drying, the yarns are soaked in natural latex and then wrapped around 120 to 210 turns to complete the second winding.

[0014] The present invention provides a production process for the above-mentioned PVC wound ball bladder, comprising the following steps:

[0015] (1) The production formula of PVC bladder includes the following raw materials, calculated by weight percentage: 80-150 parts of PVC paste resin powder, 120-220 parts of plasticizer, 80-150 parts of calcium carbonate, 1-6 parts of stabilizer and 2-8 parts of black slurry;

[0016] (2) Weigh each component according to the formula, take the plasticizer, add the PVC paste resin powder while stirring at a low speed, increase the stirring speed to medium speed, add the stabilizer, calcium carbonate and black slurry, stir at a high speed, and evacuate to obtain a plasticized paste;

[0017] (3) After the ball head is inserted into the ball mold bowl, the plasticized paste is added into the ball mold bowl, heated at high temperature, cooled, and air is added to set the shape to obtain a PVC ball bladder;

[0018] (4) The PVC bladder is sent to a winding station, 3 to 6 yarns soaked in PU glue are connected, and are wound on the surface of the PVC bladder for 70 to 90 turns to complete the first winding. After drying, the yarns are soaked in natural latex and wound for 120 to 210 turns to complete the second winding. After drying again, the PVC wound bladder is obtained.

[0019] A further solution is that the low speed is 400-600 r / min, the medium speed is 800-1000 r / min, the medium speed stirring time is 10-20 min, the high speed is 1400-1500 r / min, and the high speed stirring time is 10-20 min; the high temperature heating temperature is 260-300°C, and the time is 5-8 min.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The PVC wound ball bladder and the preparation process thereof provided by the present invention have excellent resilience, air tightness and aging resistance through experimental testing, and can replace the rubber wound ball bladder with lower cost.

[0022] The invention provides a formula for producing a PVC ball bladder: PVC paste resin powder, a plasticizer, calcium carbonate, a stabilizer and black slurry. The scientific process is adopted, which not only meets the requirements of ball bladder winding, but also has good uniformity of the ball bladder wall, durability, and good deformation resistance, reduces the cost of regular inspection and maintenance, and effectively prolongs the service life of the ball bladder. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of the structure of the ball bladder mold device used in the present invention;

[0024] Figure 2 A schematic structural diagram of the bladder mold upper portion and the mold lower portion used in the present invention in a state of being separated;

[0025] Figure 3 is a schematic diagram of the structure of the first fixing frame and the second fixing frame;

[0026] Figure 4 Schematic diagram of the lower structure of the first fixing frame and the second fixing frame in the embodiment of the present application;

[0027] Description of Figure Numbers:

[0028] 1. Upper part of the mold; 2. Lower part of the mold; 3. Spherical mold cavity; 4. Threaded hole; 5. Threaded rod; 6. Fixed ring; 7. Screw; 8. Fixed ring;

[0029] 101, upper ring; 102, first fixing frame; 103, upper mold cavity; 104, handle; 105, first pad;

[0030] 201, lower ring; 202, second fixing frame; 203, lower mold cavity; 204, ball needle rod; 205, support rod; 206, second pad. DETAILED DESCRIPTION

[0031] In order to better understand the technical content of the present invention, specific embodiments are provided below to further illustrate the present invention.

[0032] Unless otherwise specified, the experimental methods used in the embodiments of the present invention are all conventional methods.

[0033] Unless otherwise specified, the materials, reagents, etc. used in the embodiments of the present invention can be obtained from commercial sources.

[0034] The mass fraction of chlorine element is 16-18%.

[0035] PU glue is polyurethane resin.

[0036] PVC, the full name is polyvinyl chloride (Polyvinyl chloride).

[0037] The black paste was purchased from Dongguan Haopu Composite Materials Co., Ltd., HX-901.

[0038] PU glue was purchased from Huaxin Resin (Huizhou) Co., Ltd. (Weiming Zhirong Strong Adhesive).

[0039] Natural latex was purchased from Dongguan Shengda New Material Technology Co., Ltd.

[0040] The bladder mold used in the embodiment of the present invention adopts the bladder mold device of Chinese patent application No.: 2024229207324, as shown in the attached Figure 1-4 shown.

[0041] See attached Figure 1-4The present application provides a novel ball bladder mold device, comprising an upper mold part 1 and a lower mold part 2, wherein the upper mold part 1 comprises an upper ring 101, a first fixing frame 102 and an upper mold cavity 103, a plurality of the first fixing frames 102 are fixedly connected to the lower part of the upper ring 101, the first fixing frames 102 are evenly arranged in an annular manner below the upper ring 101, the first fixing frames 102 are arranged in a Y-shaped structure with three protrusions, and the lower parts of the protrusions of the first fixing frames 102 are respectively fixedly connected to different upper mold cavities 103, and the lower mold part 2 comprises a lower ring 201, a second fixing frame 202, and a plurality of the first fixing frames 102 are fixedly connected to the lower part of the upper ring 101, and the first fixing frames 102 are evenly arranged in an annular manner below the upper ring 101, and the first fixing frames 102 are arranged in a Y-shaped structure with three protrusions. The lower parts of the protrusions of the first fixing frames 102 are respectively fixedly connected to different upper mold cavities 103, and the lower mold part 2 comprises a lower ring 201, a second fixing frame 202, and a plurality of the first fixing frames 102 are fixedly connected to the lower part of the upper mold cavity 103, and the first fixing frames 102 are fixedly connected to the lower part of the upper ring 101, and ... 02 and a lower mold cavity 203, a plurality of second fixing frames 202 are fixedly connected to the upper part of the lower circular ring 201, the second fixing frames 202 are evenly arranged in a ring below the upper circular ring 101, the second fixing frames 202 are also configured as a Y-shaped structure with three protrusions, the protrusions of the second fixing frames 202 are respectively fixedly connected to different lower mold cavities 203 above, the upper mold cavity 103 and the lower mold cavity 203 are spliced ​​to form a spherical mold cavity 3, the three spherical mold cavities 3 below any one of the first fixing frames 102 have the same spacing between each other, and the spacing is configured to be 3-6cm. In the present application, the upper mold cavity 103 is fixedly connected to the upper ring 101 through the first fixing frame 102, and the lower mold cavity 203 is fixedly connected to the lower ring 201 through the second fixing frame 202, so that the operator can separate the upper mold cavity 103 and the lower mold cavity 203 by pulling the upper ring 101 and the lower ring 201 to add slurry, or press the upper ring 101 and the lower ring 201 to close the upper mold cavity 103 and the lower mold cavity 203 to form a spherical mold cavity 3 for heating and rotating and other processing operations. At the same time, the first fixing frame 102 and the second fixing frame 202 are both configured as a Y-shaped structure with three protrusions, so that the three spherical mold cavities 3 connected to the first fixing frame 102 and the second fixing frame 202 form a triangular structure. Figure 1 In this embodiment, the spherical mold cavities 3 form an equilateral triangle structure, the spacing between the spherical mold cavities 3 on the same first fixing frame 102 is the same, and the spacing between the three spherical mold cavities 3 below the first fixing frame is the same and set to 3-6 cm. Compared with the smaller and different spacings in the traditional technology, the heating effect can be improved, and the spacing between adjacent spherical mold cavities 3 is more uniform. In summary, the device can improve the space utilization rate by setting the upper ring 101, the lower ring 201 and the Y-shaped structure, so that the spacing between adjacent mold cavities is more uniform, thereby improving the production quality of the ball bladder.

[0042] Specifically, a ball pin rod 204 is disposed inside the lower mold cavity 203, and the ball pin rod 204 is fixedly connected to the bottom inside the lower mold cavity 203. The ball pin rod 204 is used to place the air hole ball head part of the ball bladder, and the air hole ball head is heat-melted and combined with the ball bladder when heated, and the ball pin rod 204 makes the air hole ball head part more firmly placed.

[0043] Specifically, the first fixing frame 102 and the second fixing frame 202 are both provided with a threaded hole 4 in the middle, and the first fixing frame 102 is provided with a threaded rod 5 matched with the threaded hole 4 in the middle, and the first fixing frame 102 and the second fixing frame 202 are detachably connected through the threaded hole 4. The threaded rod 5 matches the threaded hole 4, and when the upper mold cavity 103 and the lower mold cavity 203 are fitted to form the spherical mold cavity 3, the first fixing frame 102 and the second fixing frame 202 can be firmly connected, so as to prevent the spherical mold cavity 3 from opening, thereby improving the reliability of the device.

[0044] Specifically, the upper ring 101 and the lower ring 201 are both composed of two fixed rings 6, and the two fixed rings 6 are both arranged as concentric circles with different radii. The two fixed rings 6 can be more firmly connected to the first fixing frame 102 or the second fixing frame 202 to prevent the first fixing frame 102 and the second fixing frame 202 from deflecting on the fixed rings 6.

[0045] Specifically, a handle 104 is provided on the outer side of the fixing ring 6 with a larger radius in the upper ring 101, and the handle 104 is symmetrically arranged on both sides of the fixing ring 6 with a larger radius. The handle 104 enables the operator to lift or fix it more conveniently.

[0046] Specifically, the middle of the lower circular ring 201 is fixedly connected to the support rod 205, and the support rod 205 is arranged in a cross-shaped structure. The support rod 205 of the cross-shaped structure can support the lower circular ring 201. The lower circular ring 201 needs to contact and bump against the placement plane. The support rod 205 can prevent the lower circular ring 201 from deforming, resulting in the position deviation of the lower mold cavity 203.

[0047] Example 1

[0048] The production formula of PVC wound ball bladder is as follows:

[0049] Table 1 Production formula

[0050]

[0051] Example 2

[0052] The production formula of PVC wound ball bladder is as follows:

[0053] Table 2 Production formula

[0054]

[0055] Example 3

[0056] The production formula of PVC wound ball bladder is as follows:

[0057] Table 3 Production formula

[0058]

[0059] Example 4

[0060] The production formula of PVC wound ball bladder is as follows:

[0061] Table 4 Production formula

[0062]

[0063] The production process of the PVC wound ball bladder of Examples 1 to 4 is as follows:

[0064] (1) First, add the weighed plasticizer (DOTP) into the mixing tank, start the mixer and adjust the motor speed to the slow gear of 500r / min, then add PVC paste resin powder (TPM-31), adjust the speed to the medium speed gear of 900r / min, stir for 15 minutes, then add calcium zinc stabilizer (CH400), calcium carbonate and black slurry, adjust the motor speed to the high speed gear of 1450r / min, and stir for 15 minutes.

[0065] (2) When the time is up, start the vacuum machine to pump the plasticized paste in the mixing tank into the vacuum tank for 30 minutes. After the vacuum is pumped, filter the plasticized paste in the vacuum tank into the feeder, adjust the weight of the feeder gun, insert the ball head heated in the oven into the ball mold bowl, and then add the plasticized paste into the ball mold bowl.

[0066] (3) After all the molds are filled with materials, turn on the automatic feeding switch of the enameling furnace to send the molds into the enameling furnace at a temperature of 280 degrees and heat for 5 to 8 minutes. After cooking, turn on the switch to send the molds to the cooling cylinder. After cooling for 6 seconds, push the molds to the working area, open the molds and take out the PVC bladders.

[0067] (4) The bladder is transferred to the gas filling station, the ball nozzle is plugged for gas filling, and the gas filled ball is placed in the shaping frame. After shaping for 24 hours, it is sent to the winding station. The winding machine is connected to 3 yarns through the glue box, and then the yarn soaked in glue (PU glue) is wound on the bladder. The winding machine switch is turned on and rotated evenly for 70 to 90 turns to complete the first winding. After the yarn is soaked in natural latex, it is wound for 120 to 210 turns to complete the second winding. The wound bladder is taken out and placed on the drying rack to dry for 24 hours. Finally, the dried bladder is inspected, gas is collected, counted, and packaged for the wound bladder production to obtain the PVC wound bladder.

[0068] In the solution provided by the present invention:

[0069] ① Sphere roundness: Ordinary bladders are oval because the surface area of ​​the ball head is too large. When the air is inflated, other parts become larger as the air pressure increases. The position of the ball head does not change due to tension, so it causes an irregular circle. The PVC wound bladder improves the ball head mold, changing the surface diameter of the ball head from the original 4 cm to 2 cm. The surface area is reduced and the tension is also reduced, and the roundness reaches the standard circle.

[0070] ②Uniformity of the bladder wall: The wall thickness of ordinary bladders is uneven. The reason is that the bladder mold bowl is filled too much and too densely, resulting in uneven heating. In addition, too much calcium carbonate is added in the raw material formula, affecting the fluidity of the slurry.

[0071] The PVC wound bladder is made by improving the bladder mold, reducing the number of mold bowls and increasing the spacing between them. The raw material formula reduces the amount of calcium carbonate filling and increases the fluidity of the slurry, thereby achieving uniform thickness of the bladder wall.

[0072] ③ Adhesion between PVC bladder and yarn: Ordinary glue has poor adhesion to yarn, which makes it easy for the bladder and yarn to separate. Through repeated tests, it was found that the adhesion between PVC bladder and yarn was very good when using polyurethane glue (PU glue) and natural latex, which met the requirements of bladder winding.

[0073] Test Example 1

[0074] Air tightness is the main performance indicator of ball products. The standard stipulates that the air pressure drop rate inside the ball shall not be greater than 15% at an interval of 24 hours. The ball is inflated with an inflation volume of 0.055MPa and then left to stand for 24 hours to test the air pressure drop rate.

[0075] Refer to GB / T 14625.3-2008 Basketball, Football, Volleyball, Handball Test Method Part 3: Dynamic Impact Test Method, use a pressure impact tester, set the drum distance to 135mm, the drum speed to 340r / min, the distance between the drum and the rebound plate to 2000mm, the rebound plate is made of cloth-based plywood, and observe whether there are cracks, implosions, degumming, broken wires, deformation and other changes.

[0076] Table 5 Test results of air tightness and dynamic impact resistance

[0077]

[0078] It can be seen from Table 5 that Examples 1 to 4 have good air tightness, and the air pressure drop rate is between 7.4% and 9.4%, indicating that the bladder is prepared by selecting PVC paste resin powder, plasticizer, calcium carbonate, calcium zinc stabilizer and black slurry, and adopts scientific technology. The interface strength between the components is high, and it is not easy for air to flow out from the interface. The bladder wall has good uniformity and adhesion. At the same time, the matrix compatibility is good, and it is not easy to produce irreversible deformation after the impact test. At the same time, the surface is not broken, no implosion occurs, and there is no degumming, and the durability is good.

[0079] Example 5

[0080] The production formula of PVC wound ball bladder is as follows:

[0081] Example 5-1: 100 parts of Xinjiang Tianye (TPM-31), 173 parts of dioctyl terephthalate (DOTP), 100 parts of calcium carbonate, 5 parts of chlorinated polyethylene (CPVC), 30 parts of methacrylic acid-ethyl acrylate copolymer, 3 parts of calcium zinc stabilizer (CH400) and 4 parts of black paste;

[0082] Example 5-2: 100 parts of Xinjiang Tianye (TPM-31), 173 parts of dioctyl terephthalate (DOTP), 100 parts of calcium carbonate, 10 parts of chlorinated polyethylene (CPVC), 30 parts of methacrylic acid-ethyl acrylate copolymer, 3 parts of calcium zinc stabilizer (CH400) and 4 parts of black paste;

[0083] Example 5-3: 100 parts of Xinjiang Tianye (TPM-31), 173 parts of dioctyl terephthalate (DOTP), 100 parts of calcium carbonate, 15 parts of chlorinated polyethylene (CPVC), 30 parts of methacrylic acid-ethyl acrylate copolymer, 3 parts of calcium zinc stabilizer (CH400) and 4 parts of black paste;

[0084] Example 5-4: 100 parts of Xinjiang Tianye (TPM-31), 173 parts of dioctyl terephthalate (DOTP), 100 parts of calcium carbonate, 20 parts of chlorinated polyethylene (CPVC), 30 parts of methacrylic acid-ethyl acrylate copolymer, 3 parts of calcium zinc stabilizer (CH400) and 4 parts of black paste;

[0085] Example 5-5: 100 parts of Xinjiang Tianye (TPM-31), 173 parts of dioctyl terephthalate (DOTP), 100 parts of calcium carbonate, 25 parts of chlorinated polyethylene (CPVC), 30 parts of methacrylic acid-ethyl acrylate copolymer, 3 parts of calcium zinc stabilizer (CH400) and 4 parts of black paste;

[0086] Example 5-6: 100 parts of Xinjiang Tianye (TPM-31), 173 parts of dioctyl terephthalate (DOTP), 100 parts of calcium carbonate, 30 parts of chlorinated polyethylene (CPVC), 30 parts of methacrylic acid-ethyl acrylate copolymer, 3 parts of calcium zinc stabilizer (CH400) and 4 parts of black paste;

[0087] Example 5-7: 100 parts of Xinjiang Tianye (TPM-31), 173 parts of dioctyl terephthalate (DOTP), 100 parts of calcium carbonate, 15 parts of chlorinated polyethylene (CPVC), 40 parts of methacrylic acid-ethyl acrylate copolymer, 3 parts of calcium zinc stabilizer (CH400) and 4 parts of black paste;

[0088] The production process of PVC wound ball bladder is as follows:

[0089] (1) First, add the weighed plasticizer (DOTP) into the mixing tank, start the mixer and adjust the motor speed to the slow gear of 500 r / min, then add PVC paste resin powder (TPM-31) and chlorinated polyethylene (CPVC), adjust the speed to the medium speed of 900 r / min, stir for 15 minutes, then add methacrylic acid-ethyl acrylate copolymer, calcium zinc stabilizer (CH400) and calcium carbonate and black slurry, adjust the motor speed to the high speed of 1450 r / min, and stir for 15 minutes.

[0090] (2) When the time is up, start the vacuum machine to pump the plasticized paste in the mixing tank into the vacuum tank for 30 minutes. After the vacuum is pumped, filter the plasticized paste in the vacuum tank into the feeder, adjust the weight of the feeder gun, insert the ball head heated in the oven into the ball mold bowl, and then add the plasticized paste into the ball mold bowl.

[0091] (3) After all the molds are filled with materials, turn on the automatic feeding switch of the enameling furnace to send the molds into the enameling furnace at a temperature of 280 degrees and heat for 5 to 8 minutes. After cooking, turn on the switch to send the molds to the cooling cylinder. After cooling for 6 seconds, push the molds to the working area, open the molds and take out the PVC bladders.

[0092] (4) The bladder is transferred to the gas filling station, the ball nozzle is plugged for gas filling, and the gas filled ball is placed in the shaping frame. After shaping for 24 hours, it is sent to the winding station. The winding machine is connected to 3 yarns through the glue box, and then the yarn soaked in glue (PU glue) is wound on the bladder. The winding machine switch is turned on and rotated evenly for 70 to 90 turns to complete the first winding. After the yarn is soaked in natural latex, it is wound for 120 to 210 turns to complete the second winding. The wound bladder is taken out and placed on the drying rack to dry for 24 hours. Finally, the dried bladder is inspected, gas is collected, counted, and packaged for the wound bladder production to obtain the PVC wound bladder.

[0093] Test Example 2

[0094] Table 6 Test results of dynamic impact resistance

[0095]

[0096] It can be seen from Table 6 that adding a certain amount of chlorinated polyethylene (CPVC) and methacrylic acid-ethyl acrylate copolymer can effectively improve the compatibility between materials, avoid a certain degree of slippage of the polymer molecular chain during the impact process, and prevent deformation problems. The compatibility of the matrix is ​​better and deformation problems will not occur. At the same time, the surface is not broken, no implosion occurs, and no degumming occurs, and the durability is good.

[0097] The above is a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A PVC wound ball bladder, characterized in that: The PVC winding bladder comprises winding yarn on the surface of a PVC bladder that has been shaped by adding air. The production formula of the PVC bladder comprises the following raw materials by weight percentage: 80 to 150 parts of PVC paste resin powder, 120 to 250 parts of plasticizer, 80 to 150 parts of calcium carbonate, 1 to 6 parts of stabilizer and 2 to 8 parts of black slurry.

2. The PVC wound ball bladder according to claim 1, characterized in that: The production formula of the PVC bladder includes the following raw materials by weight percentage: 80-120 parts of PVC paste resin powder, 150-200 parts of plasticizer, 80-120 parts of calcium carbonate, 1-4 parts of stabilizer and 2-6 parts of black slurry, the plasticizer includes dioctyl terephthalate and / or dioctyl phthalate, the stabilizer includes calcium zinc stabilizer and / or barium zinc stabilizer, and the calcium zinc stabilizer includes at least one of CH400, CH401 or CH402.

3. The PVC wound ball bladder according to claim 2, characterized in that: The production formula of the PVC bladder includes the following raw materials by weight percentage: 85-115 parts of PVC paste resin powder, 165-185 parts of plasticizer, 85-115 parts of calcium carbonate, 2-4 parts of stabilizer and 3-6 parts of black slurry.

4. A PVC wound ball bladder according to any one of claims 1 to 3, characterized in that: The production formula of the PVC wound ball bladder also includes 10 to 20 parts of chlorinated polyethylene and 30 to 40 parts of methacrylic acid-ethyl acrylate copolymer by weight; the mass fraction of chlorine element in the chlorinated polyethylene is 10 to 23%.

5. A PVC wound ball bladder according to any one of claims 1 to 3, characterized in that: The production process of the PVC bladder comprises the following steps: (1) Weigh each component according to the formula, take the plasticizer, add the PVC paste resin powder while stirring at a low speed, increase the stirring speed to a medium speed, add the stabilizer, calcium carbonate and black slurry, stir at a high speed, and evacuate to obtain a plasticized paste; (2) After the ball head is inserted into the ball mold bowl, the plasticized paste is added into the ball mold bowl, heated at high temperature, cooled, and air is added to shape the ball to obtain the PVC ball bladder.

6. The PVC wound ball bladder according to claim 5, characterized in that: The low speed is 400-600 r / min, the medium speed is 800-1000 r / min, the medium speed stirring time is 10-20 min, the high speed is 1400-1500 r / min, and the high speed stirring time is 10-20 min; The high temperature heating temperature is 260-300°C and the time is 5-8 minutes.

7. The PVC wound ball bladder according to claim 1, characterized in that: The yarns are 3 to 6 in number. After being soaked in PU glue, the yarns are wound around the surface of the PVC bladder that has been shaped by adding air. The yarns are wound around for 70 to 90 turns to complete the first winding. After being dried, the yarns are soaked in natural latex again and wound around for 120 to 210 turns to complete the second winding.

8. A production process for a PVC wound ball bladder, characterized in that: The steps include: (1) The production formula of PVC bladder includes the following raw materials, calculated by weight percentage: 80-150 parts of PVC paste resin powder, 120-220 parts of plasticizer, 80-150 parts of calcium carbonate, 1-6 parts of stabilizer and 2-8 parts of black slurry; (2) Weigh each component according to the formula, take the plasticizer, add the PVC paste resin powder while stirring at a low speed, increase the stirring speed to medium speed, add the stabilizer, calcium carbonate and black slurry, stir at a high speed, and evacuate to obtain a plasticized paste; (3) After the ball head is inserted into the ball mold bowl, the plasticized paste is added into the ball mold bowl, heated at high temperature, cooled, and air is added to set the shape to obtain a PVC ball bladder; (4) The PVC bladder is sent to a winding station, 3 to 6 yarns soaked in PU glue are connected, and are wound on the surface of the PVC bladder for 70 to 90 turns to complete the first winding. After drying, the yarns are soaked in natural latex and wound for 120 to 210 turns to complete the second winding. After drying again, the PVC wound bladder is obtained.

9. The production process of a PVC wound ball bladder according to claim 8, characterized in that: The low speed is 400-600 r / min, the medium speed is 800-1000 r / min, the medium speed stirring time is 10-20 min, the high speed is 1400-1500 r / min, and the high speed stirring time is 10-20 min; The high temperature heating temperature is 260-300°C and the time is 5-8 minutes.

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