CN101450248A - Inner container of sports ball, ball and manufacturing method thereof - Google Patents

Abstract

A sports ball inner container, a sports ball and a manufacturing method thereof. The method comprises the following steps: providing an inflated inner tube; winding the fiber coated with the adhesive on the inner tube to form a first reinforcing layer; applying a second reinforcement layer outside the first reinforcement layer; and applying an outer skin layer. The sports ball comprises a rubber inner tube, a first reinforcing layer, an intermediate layer, a second reinforcing layer and an outer skin layer. The method is simple and easy to implement, the sports ball manufactured by the method has double reinforcing layers, is waterproof, impact-resistant, strong in adaptability and good in sphericity, the thickness of the formed ball wall and the center of gravity of the ball are stable and uniform, and the shape retentivity and the durability are good.

Description

Inner tank of sports ball, ball and manufacturing method thereof

technical field

[0001] The present invention mainly relates to sports balls, and in particular to a sports ball liner and a method for making a sports ball using the liner.

Background technique

[0002] Generally speaking, sports balls with an inflatable structure such as football, volleyball and handball generally have an inflated rubber inner tube, a reinforcement layer and a skin layer supported by leather. According to the different production methods of the epidermis, sports balls can be divided into hand-stitched balls and pasted balls.

[0003] Regardless of whether it is a pasted ball or a hand-stitched ball, a layer of reinforcing layer that basically has can prevent the rubber inner tube from deforming during the use of the ball and deviate from its true spherical shape, and can also prevent the impact of environmental factors from causing The aging of the ball affects the service life of the ball. Therefore, it is important to make enhancement layers in addition to other layers.

[0004] U.S. Patent No. 4333648 discloses a sticky ball, which includes 5 layers: butyl rubber, reinforced winding layer, which is made of nylon wire with certain strength and elongation at break, and is molded An intermediate rubber layer formed by vulcanization, an adhesive layer and an outer layer of genuine or artificial leather, which is produced by bonding. The winding layer is not easy to fix, and the application process of the rubber layer is complicated.

[0005] U.S. Patent No. 5,772,545 also discloses a ball of such a structure: comprising: the same inner tube of the above-mentioned ball, and the same as the above-mentioned paste ball, the nylon wire of several kilometers is wound on the inner tube to form a winding reinforcing layer, The end edges of multiple leather balls are bent inward, and then stitched with a thread (about 500 denier) with a sewing machine to form a skin layer. Due to the presence of a reinforcing layer, the leather ball does not need a backing material. The leather ball used The sheets are thin and soft enough to be sewn with a sewing machine. The reinforced layer made in this way is not easy to fix in place, it will cause sliding, and the wall thickness of the liner will be uneven.

[0006] U.S. Patent Application No. US2003/0078119A1 also discloses a sports ball, which includes: a spherical elastic inner tube for inflation, a reinforcing layer formed on the entire inner tube surface, a plurality of leather balls directly or through all Or partially cover the rubber layer and adhere to the reinforcing layer, wherein the outer edge of the leather ball is bent inward, and the thickness adjustment part is added due to the bent part, which is backed by the leather layer. According to this patent application, the inner tube can also be made of butyl rubber into a hollow sphere with air holes for inflation, and the reinforcement layer is made of, for example, about 3000 meters of nylon filaments, which are overlapped and wound in all directions on the inflated inner tube and glued. Attach to the inner tube surface, or sew the fabric into a ball. Since the bonding is carried out after the winding, before the wound wire is fixed to the inflated inner tube, it is easy to cause the overall movement of the wound wire to be unable to be fixed in place in time, resulting in uneven thickness of the reinforcing layer, thus making the finished product The center of gravity of the ball is uneven, and the manufacturing process is complicated.

Contents of the invention

[0007] One of the objects of the present invention is to provide a sports ball and a method of making the same that overcome the above-mentioned shortcomings of the prior art. The method provided by the invention is easy to operate, easy to implement and suitable for mass production. The sports ball produced by the method of the present invention has good sphericity, the thickness of the formed ball wall and the center of gravity of the ball are stable and uniform, the shape retention and durability are stable and improved compared with the prior art, and are not easily affected by external environmental factors Impact. It can be used regardless of rainy and cold weather in all seasons, and the performance and lifespan will not be affected.

[0008] According to one aspect of the present invention, there is provided a method for making an inner bag of a sports ball, comprising the steps of: inflating the inner tube through an air valve on the inner tube; winding fibers coated with an adhesive on the inner tube forming a first reinforcing layer; applying a second reinforcing layer over said first reinforcing layer; and drying the innertube to which the reinforcing layer is applied.

[0009] According to a further feature of the invention, the second reinforcing layer is a thin rubber layer formed by electrostatic spraying. The amount of thin layer rubber sprayed is 5-20 grams.

[0010] According to a further feature of the invention, further comprising the step of applying an interposer prior to applying said second reinforcement layer. The intermediate layer is a conductive agent layer formed by immersing the inner tube with the first reinforcement layer in the conductive agent for a certain period of time. The immersion time is 1-4 minutes. The immersion time is preferably 2 minutes followed by 5 minutes of drying.

[0011] According to a further feature of the invention, it also includes the step of heating the inner tube having the thin rubber layer in a temperature-controlled tunnel device to facilitate drying. The drying temperature is 30-50 degrees centigrade, and the heating duration is 15 minutes. Including drying the heated inner tube in the air for 8-10 minutes to form a spare inner tank.

[0012] According to a further feature of the invention, it also includes a step of natural drying for 30 minutes after winding the fiber layer.

[0013] According to a further feature of the invention, the fibers include nylon threads, rayon, cotton threads or combinations thereof. Described inner tube of a tire is made of rubber.

[0014] According to a further feature of the invention, the step of using the coating device to apply the adhesive is carried out almost simultaneously with the step of winding the fibers coated with the adhesive on the inflated inner tube by a winding machine to form the Describe the first enhancement layer.

[0015] According to another aspect of the present invention, there is provided an inner bag for a sports ball, comprising: an inflatable inner tube, a first reinforcement layer formed by winding fibers coated with an adhesive on the inflated inner tube, an intermediary layer, and a second enhancement layer.

[0016] According to a further feature of the invention, the intermediary layer is formed of a conductive agent to facilitate the application of the second reinforcement layer. The intermediate layer is formed by immersing the inner tube formed with the first reinforcing layer in the conductive agent for 2 minutes, and then drying for 5 minutes.

[0017] According to a further feature of the invention, the second reinforcing layer is a thin rubber layer formed by electrostatic spraying. The amount of electrostatic spraying is 5-20 grams.

[0018] According to another aspect of the present invention, there is provided a method for making a sports ball, comprising the steps of: providing an inflated inner tube; winding fibers coated with adhesive to form a first reinforcement layer on the inner tube; applying a second reinforcement layer over the first reinforcement layer; and applying an outer skin layer.

[0019] According to a further feature of the invention, the step of using the coating device to apply the adhesive is carried out almost simultaneously with the step of winding the fibers coated with the adhesive on the inflated inner tube by a winding machine, and naturally after winding Dry for 30 minutes to form the first reinforcement layer.

[0020] According to a further feature of the invention, it also includes the step of forming an intermediary layer on the inner tube with the first reinforcing layer before applying the second reinforcing layer, so that the spraying of the second reinforcing layer The steps are easy to follow. The interposer was formed by immersing the inner tube having the first reinforcing layer in a conductive agent for 2 minutes.

[0021] According to a further feature of the invention, the second reinforcing layer is formed by electrostatic spraying. The second reinforcing layer contains rubber, and the sprayed amount is 5-20 grams. It further includes heating the inner tube with the thin rubber layer in a temperature-controlled channel-shaped device to promote rapid drying to form a second reinforcement layer. The heating temperature is 30-50 degrees Celsius, and the heating time is 15 minutes.

[0022] According to a further feature of the invention, it also includes continuing to dry the heat-treated inner tube naturally in the air for 8-10 minutes to form a spare inner container.

[0023] According to a further feature of the invention, the outer skin layer is formed by sewing together a non-woven layer having a leather outer layer and a backing.

[0024] According to another aspect of the present invention, a sports ball is provided, comprising: an inflatable inner tube, a first reinforcement layer formed on the inflatable inner tube, a second reinforcement layer and an outer skin layer, characterized in that the The second reinforcing layer is a thin rubber layer applied by electrostatic spraying on the first reinforcing layer.

[0025] According to a further feature of the invention, the first reinforcing layer is formed by winding fibers coated with an adhesive around the inner tube so that the wound fibers are secured in place on the inflated inner tube.

[0026] According to a further feature of the invention, further comprising an interposer formed outside the first reinforcement layer. The interposer was formed by immersing the inner tube having the first reinforcing layer in a conductive agent for 2 minutes.

[0027] According to a further feature of the invention, the outer skin layer comprises a leather outer layer and a backing non-woven layer. The outer skin layer is formed from sewn multiple leather pieces having a polygonal shape with curved sides.

[0028] The sports ball produced by the method of the present invention has little difference between the inner tank and the individual sports ball, has stronger impact resistance, long service life, is not easily deformed, and is resistant to wear. The disadvantages of the balls made in the prior art are overcome.

Description of drawings

[0029] The purpose and other features of the present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0030] FIG. 1 shows a flow diagram of making a sports ball bladder according to one embodiment of the present invention.

[0031] FIG. 2 shows a flow diagram for making a sports ball bladder according to one embodiment of the present invention.

[0032] FIG. 3 shows a schematic cross-sectional view of an inner bladder of a sports ball made in accordance with one embodiment of the present invention.

[0033] FIG. 4 illustrates a flow diagram for making a sports ball in accordance with one embodiment of the present invention.

[0034] FIG. 5 illustrates a flow diagram for making a sports ball in accordance with one embodiment of the present invention.

[0035] FIG. 6 shows a schematic diagram of a polygonal spherical sheet used to form a skin layer.

[0036] FIG. 7 shows a schematic cross-sectional view of a sports ball made in accordance with one embodiment of the present invention.

[0037] FIG. 8 shows a schematic cross-sectional view of a sports ball made in accordance with one embodiment of the present invention.

Detailed ways

[0038] Fig. 1 is a flow chart of making an inner container of a sports ball according to an embodiment of the present invention. The method for making an inner container of a sports ball according to the present invention comprises the following steps: In step 100, through the air valve on the inner tube 12 Inflate the inner tube 1 to provide an inflated inner tube 1; in step 102, wind fibers coated with adhesive to form a first reinforcement layer 2 on the inner tube; A second reinforcement layer 4 is applied.

[0038] FIG. 2 shows a flowchart of an embodiment of the present invention. In this embodiment, in step 200, an air valve 12 is formed on an inner tube 1 made of rubber, and the prepared rubber inner tube is inflated. In step 202, the pre-prepared long fiber, such as nylon thread or thread, cotton yarn, suitable any other blended thread or similar fiber thread, is evenly coated with adhesive on it with adhesive coating device, and the adhesive can be commonly used in the art. Adhesives or adhesives with suitable curing times. Then according to the thickness of the reinforcing layer to be wound, utilize a winding machine or a fiber winding device (not shown) to wind the fibers just coated with the adhesive to each direction on the inflated inner tube 1 evenly, or the coating device 21 and the winding machine successively Start working almost at the same time, while the coating device 21 is coating adhesive or bonding agent 20 on the fiber, it is delivered to the winding machine. , the winding machine starts to evenly wind the fibers coated with the adhesive on the inflated inner tube in all directions until the required thickness, see step 204 . Coating device 21 comprises a container containing adhesive 20 and driven rollers placed therein, which are placed between bobbins 22 and an inflated inner tube 1 of fibers to be wound, the inflated inner tube 1 being rotatably fixed around the On the fiber roller 23. In step 206, the inner tube wrapped with fibers is placed (for example, suspended) on the support 24 to dry naturally in the air, or the method of drying at low temperature and short time can be used for quick drying, such as using a drying device (not shown), etc. . In the case of natural drying in the air, the time generally required is about 30 minutes. Depending on the adhesive used and climatic conditions, the drying time can be adjusted. And the adhesive used wherein can be any adhesive of the prior art that can dry naturally in the air, in another embodiment according to this invention, the step of coating adhesive is just to the inner tube of a tube of described inflation by winding machine 1 before winding the adhesive-coated fibers uniformly in all directions, so that the adhesive-coated fibers can be more easily and better fixed to the inflated inner tube, and avoid the wound fibers or wires from being damaged by themselves or the outside world. The reasons for sliding in different directions or causing the winding thickness of one part of the sphere to be thicker or thinner than the other part, so that it can be fixed to the inflated inner tube in time to produce a uniform thickness of the winding fiber or wire layer, and then dried to form first enhancement layer. In step 207 , the dried inner tube with the first reinforcing layer is immersed in the conductive agent 26 for a period of time, and then taken out and air-dried to form the interlayer 3 . In step 208, a thin layer of rubber is evenly sprayed on the first reinforcing layer by using an electrostatic sprayer 28 outside the first reinforcing fiber layer. In step 210, after the rubber layer is evenly sprayed, the sprayed inner tube arrangement support 24 can be placed in a temperature-controllable drying device and dried at a suitable temperature, for example, at about 30-50 degrees in a tunnel-type heating device Medium heat for about 10-20 minutes, preferably about 15 minutes, to accelerate drying to form a second reinforcement layer. A shorter heating period followed by air drying is also an option. The air drying time is about 8-10 minutes to form a ready-to-use liner with double-layer reinforced structure. It should be understood that for the sake of simplicity of the process, the method of heating at a slightly higher temperature or drying in the air for a long time can also be selected separately. The use of this second reinforcement layer keeps the first reinforcement fiber layer well in place, even under different climatic temperature conditions (such as minus 10°C to minus 40°C), it will not fall off or slip, and it can also prevent The first reinforcing fiber layer absorbs water when the ball is used in rainy and snowy weather.

[0039] Depending on the thickness of the thin layer to be sprayed, the amount of rubber sprayed onto the first reinforcement layer can be selected, preferably about 5-20 grams. According to the embodiment of the present invention, the sports ball with extra reinforcing layer and fixing measures has good elasticity, impermeability, uniform wall thickness, can be used in any common weather, and the manufacturing method is simple and easy. In the case of mass production, the performance stability between a single ball and each ball can still be guaranteed.

[0040] According to another embodiment of the present invention, the interposer 3 may also be applied before the application of the second reinforcement layer. The intermediary layer is a conductive agent layer, and the application of the conductive agent layer can facilitate electrostatic spraying, thereby making the subsequent electrostatic spraying process easier. The conductive agent layer is applied by the following method: the inner tube formed with the first winding reinforcing layer is immersed one by one in the container 26 containing the conductive agent and placed for about 1-4 minutes, such as about 2 minutes, and then suspended Air-dry naturally for several minutes on the support 24, and the drying time is preferably about 5 minutes. The conductive agent may be a commonly used conductive agent in the field of electrostatic spraying.

[0041] It should be understood that the inner tube may also be an inner tube of other suitable materials, such as natural or synthetic rubber.

[0042] FIG. 3 shows a schematic cross-sectional view of an inner container of a sports ball provided according to an embodiment of the present invention. A reinforcement layer 2 , an intermediary layer 3 , and a second reinforcement layer 4 .

[0043] The above-mentioned intermediary layer 3 is formed of a conductive agent, so as to make it easier to apply the second reinforcement layer 4. The intermediate layer 3 is formed by immersing the inner tube 1 formed with the first reinforcing layer 2 into a container 26 containing a conductive agent for about 2 minutes. The second reinforcement layer 4 is a thin rubber layer formed by electrostatically spraying about 5-20 grams of rubber with an electrostatic sprayer 28 . Other materials with similar performance and waterproof function can also be sprayed. In addition to the above-mentioned effects, the sprayed rubber layer can also fill the many small gaps left by the first fiber layer, so that the formed inner wall or ball wall is more uniform. The inner tube of a tire can be naturally dried in the air for a period of time after the fibers or threads coated with the adhesive are wound on the inner tube of the air-filled tube, and other quicker methods can also be used to dry. After evenly spraying the thin rubber layer, it can be heated in a heating device for a certain period of time to promote rapid drying, and dried in the air for a period of time, for example, about 8-10 minutes to ensure that the inner tank is completely dry. Such an inner liner has an improved double-enhanced waterproof protection function after being installed with the outer skin layer of the ball, and is suitable for use in various climatic conditions. The ball has good elasticity and good durability.

[0044] FIG. 4 illustrates another embodiment of the present invention, which provides a method of making a sports ball, comprising the steps of: providing an inflated inner tube (step 310); winding adhesive-coated fibers around the inflated Form a first reinforcement layer on the inner tube of the tire (step 312); apply a second reinforcement layer on the outside of the first reinforcement layer (step 314); and apply an outer skin layer (step 316), which is obtained by applying an inner The gallbladder is deflated and then put into the sewn outer skin layer to achieve.

[0045] FIG. 5 shows a flow chart for making a sports ball according to one embodiment of the present invention. In step 400, the rubber inner tube is inflated through the valve 12 on the inner tube to provide an inflated inner tube 1. In step 402, coat adhesive 20 on the fiber with coating device 21, and in step 404, guide the fiber that has been coated with adhesive to winder 23 on which the pneumatic inner tube has been placed, and the step of coating adhesive just passes through This is done before the winding machine 23 uniformly winds the adhesive coated fibers in all directions of the inflated inner tube 1 by placing the coating device 21 between the fiber wheel or bobbin 22 and the winding machine 23 . The inner tube after winding is hung on the support 24 and dried naturally in the air for about 30 minutes to form the first reinforcement layer 2, see step 406, the formation method of the first reinforcement layer enables the winding layer to be fixed in place in time, without After the winding step is completed, the winding fiber layer changes due to external factors, so that the formed first reinforcing layer is not uniform. In step 408, the inner tube 1 with the first reinforcing layer 2 is sequentially immersed in the container 26 containing the conductive agent, staying for about 1 to 4 minutes, preferably 2 minutes, taken out, suspended and air-dried to form the intermediary layer 3, and applied The purpose of the intermediary layer or conductive agent layer 3 is to facilitate the subsequent spraying step, wherein the conductive agents used may be those commonly used in the field of electrostatic spraying. In step 410, a thin layer of rubber is sprayed on the outside of the intermediary layer 3 with an electrostatic sprayer 28, and the spraying amount is, for example, about 5-20 grams. In step 412, put the inner tube sprayed with a thin rubber layer on the support 24 and send it into a heating device (not shown) for heating. The heating temperature is, for example, about 30-50° C., and the time is about 10-20 minutes, for example, 15 minutes. , to accelerate the drying speed to form the second reinforcement layer 4 . The heating device therein can be an oven, a channel-shaped or long tube-shaped low-temperature heating furnace, or similar heating devices. In step 414, the above-mentioned inner tube is naturally dried in the air for a period of time, such as 8-10 minutes, thereby forming a completely dried second reinforcing layer 4 . The formation of the reinforcement layer can further enhance the function of the first reinforcement layer, so that the fiber layer is not easy to absorb water, and the inner tank has a waterproof function, resists bad weather, and makes the ball more impact-resistant. In step 416, multiple pieces of polygonal leather balls are sewn into the outer skin layer, the inner bag with double reinforcement layers is deflated and loaded into the outer skin layer, and the opening is sewn up to form a sports ball. The leather balls can be bonded to a backing layer, such as a non-woven fabric layer, and the balls can be sewn or pasted to form an outer skin layer, and the outer skin layer can be made of natural leather or artificial leather.

[0046] According to one embodiment of the present invention, the second reinforcement layer 4 is formed by electrostatically spraying a suitable paint on the outside of the first reinforcement layer. The second reinforcing layer contains rubber and is sprayed in an amount of about 5-20 grams. The rubber or similar materials sprayed in this way not only play the role of waterproofing and enhancing elasticity, but also can effectively fill the tiny gaps left between the fibers or threads of the first reinforcement layer. According to one embodiment of the present invention, after the thin rubber layer is sprayed onto the first reinforcing layer 2, the inner tube with said thin rubber layer is heated in a temperature-controlled channel-shaped heating device (not shown) to Promotes rapid drying to form a second reinforcement layer 4 . It can also be dried directly by natural drying in the air. If heating is adopted, the heating temperature is about 30-50 degrees Celsius, and the heating time is about 10-40 minutes, preferably about 15 minutes. The heating device can be a special low-temperature heating furnace, an oven, and the like. The heat-treated inner tube can also continue to dry naturally in the air for a period of time, such as about 8-10 minutes, to completely dry it to form a spare inner bag. Then, sew pieces of polygonal spheres (such as pentagons and/or hexagons, with curved sides) into a spherical shape on the reverse side (see Figure 6), leaving one or two edges unsewn for now, and turn over Go to the front side, deflate the liner with the double reinforcement layer made by the above method and pack it into the outer skin layer 5, and sew the remaining edges to form a sports ball. Wherein the sewn edge forms a certain radian. It is also possible to adopt the method of directly pasting the polygonal spherical sheet to form the outer skin layer outside the spare inner bag to make the outer skin layer. The outer cortex can adopt suitable materials such as natural leather and artificial leather.

[0047] FIG. 7 shows a cross-sectional view of the sports ball of the present invention. The sports ball provided in this manner includes: an inflatable inner tube 1, a first reinforcement layer 2 formed by winding fibers on the inflated inner tube, and a second Two reinforcement layers 4 and a skin layer 5, wherein the second reinforcement layer is a thin rubber layer applied on the first reinforcement layer by electrostatic spraying using a sprayer.

[0048] According to an embodiment of the present invention, an intermediary layer 3 may also be provided outside the first reinforcement layer 2. The interposer was formed by immersing the inner tube with the first reinforcing layer in a conductive agent for about 2 minutes. The intermediate layer 3 makes it easier for the subsequent electrostatically sprayed rubber layer to adhere to the first reinforcement layer.

[0049] According to one embodiment of the present invention, referring to Fig. 8, the outer skin layer includes a leather outer layer 5 and a backing layer 6, such as a non-woven fabric layer, and if the outer skin layer uses natural leather, the backing layer may not be used 6. The outer skin layer 5 is formed by sewing a plurality of polygonal leather pieces with curved sides (see FIG. 6 ), and can also be formed by bonding the polygonal outer skin layer to the second reinforcement layer 4 . The formation of the second reinforcing layer makes the inner tank of the sports ball of the present invention have double reinforcing functions, impact resistance, good elasticity, good sphericality, uniform wall thickness of the ball, and waterproof function, even in rainy and snowy days. can use.

[0050] According to one embodiment of the present invention, the fibers are coated with an adhesive before being wound, so that the wound fibers are fixed in place on the inflated inner tube, the adhesive is applied by means of a coating device 21, Then, before the adhesive is cured, the fibers that have just been coated with the adhesive are evenly wound on the inflated rubber inner tube 1 in all directions by a winding machine 23, wound to a certain thickness as required, and then naturally dried in the air for a period of time, such as drying for 10 minutes to one hour, preferably 30 minutes, to form the first reinforcement layer 2 .

[0051] The inner container and the sports ball produced by the method of the present invention have good elasticity, stronger impact resistance, waterproof, long service life, not easily deformed, and wear-resistant. The disadvantages of balls made using the prior art are overcome.

[0052] While the invention has been described and illustrated with reference to specific embodiments and drawings, the foregoing specific or specific details are not intended to limit the invention. Those skilled in the art can make appropriate changes, omissions or replacements to the above-described steps or components, for example, omit the interposer 3 (see Figure 7), and directly spray suitable materials without using heat, but directly in the air Natural drying, etc., and these modifications and changes do not depart from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be determined by the appended claims.

Claims (35)

1. method of making the inner bag of ball for sports may further comprise the steps:

The inner tube of a tyre of inflation is provided;

The fiber that is coated with adhesive is formed first enhancement layer on the inner tube of a tyre of described inflation;

And

Outside described first enhancement layer, apply second enhancement layer.

2. method according to claim 1 is characterized in that: described second enhancement layer is the TR thin rubber layer that forms by electrostatic spraying.

3. method according to claim 2 is characterized in that: the amount of the thin layer rubber that is sprayed is the 5-20 gram.

4. method according to claim 1 is characterized in that: further be included in and apply the step that described second enhancement layer applies intermediary layer before.

5. method according to claim 4 is characterized in that: described intermediary layer is the conductive agent layer, and it immerses by the inner tube of a tyre that will have first enhancement layer, and certain hour forms in the conductive agent.

6. method according to claim 5 is characterized in that: described Immersion time is 1-4 minute.

7. method according to claim 6 is characterized in that: described Immersion time is 2 minutes, dry 5 minutes then.

8. according to claim 2 or 3 described methods, it is characterized in that: comprise that further the inner tube of a tyre that will have the TR thin rubber layer places the lane device of controlled temperature to heat, to promote dry step.

9. method according to claim 8 is characterized in that: described baking temperature is 30-50 degree centigrade, and be 15 minutes the duration of heat.

10. method according to claim 9 is characterized in that: further comprise the heated inner tube of a tyre forming standby inner bag at air drying 8-10 minute.

11. method according to claim 1, it is characterized in that: utilize the step of coating unit adhesive coating and on the inner tube of a tyre of described inflation, twine the described step that is coated with the fiber of adhesive and almost carry out simultaneously, to form described first enhancement layer by coil winding machine.

12. method according to claim 1 is characterized in that: further be included in 30 minutes step of air dry after intact fibrage.

13. method according to claim 1 is characterized in that: described fiber comprises nylon wire, artificial silk, cotton or their combination.

14. according to the described method of claim 1-7, it is characterized in that: the described inner tube of a tyre is made with rubber.

15. an inner bag that is used for ball for sports comprises: the inflatable inner tube of a tyre, by the fiber that scribbles adhesive first enhancement layer of forming on the inner tube of a tyre of inflation, intermediary layer, and second enhancement layer.

16. inner bag according to claim 15 is characterized in that: described intermediary layer is formed by conductive agent, and described second enhancement layer is easier to carry out so that apply.

17. according to claim 15 or 16 described inner bags, it is characterized in that: described intermediary layer is to immerse in the conductive agent by the inner tube of a tyre that will be formed with described first enhancement layer to form in 2 minutes.

18. according to claim 15 or 16 described inner bags, it is characterized in that: described second enhancement layer is the TR thin rubber layer that forms by electrostatic spraying.

19. inner bag according to claim 18 is characterized in that: described electrostatic spraying amount is the 5-20 gram.

20. a method of making ball for sports may further comprise the steps:

The inner tube of a tyre of inflation is provided;

The fiber that is coated with adhesive is formed first enhancement layer on the inner tube of a tyre of described inflation;

Outside described first enhancement layer, apply second enhancement layer; And

Apply exodermis.

21. method according to claim 20, it is characterized in that: utilize the step of coating unit adhesive coating and on the inner tube of a tyre of described inflation, twine the described step that is coated with the fiber of adhesive and almost carry out simultaneously by coil winding machine, air dry is 30 minutes after twining, to form described first enhancement layer.

22. method according to claim 20 is characterized in that: further be included in and apply before described second enhancement layer, on the inner tube of a tyre, form the step of intermediary layer, be easy to carry out so that spray the step of described second enhancement layer with described first enhancement layer.

23. method according to claim 21 is characterized in that: described intermediary layer is to immerse in the conductive agent 2 minutes by the inner tube of a tyre that will have described first enhancement layer, forms in dry 5 minutes then.

24. method according to claim 20 is characterized in that: described second enhancement layer forms by electrostatic spraying.

25. method according to claim 24 is characterized in that: described second enhancement layer is the TR thin rubber layer, and the amount that is sprayed is the 5-20 gram.

26. method according to claim 25 is characterized in that: comprise that further the inner tube of a tyre that will have described TR thin rubber layer places the heater of controlled temperature to heat, to promote rapid draing.

27. method according to claim 26 is characterized in that: heating-up temperature is 30-50 degree centigrade, and be 15 minutes heat time heating time.

28. method according to claim 27 further comprises the heat treated inner tube of a tyre of process was continued in air dry 8-10 minute, forms standby inner bag.

29. method according to claim 20 is characterized in that: described exodermis is to be sewed together by the nonwoven layer that will have leather skin and backing to form.

30. a ball for sports comprises: the inflatable inner tube of a tyre, first enhancement layer that on the inner tube of a tyre of inflation, forms, second enhancement layer and exodermis is characterized in that, and described second enhancement layer is the TR thin rubber layer, and it is applied on described first enhancement layer by electrostatic spraying.

31. ball for sports according to claim 30 is characterized in that: described first enhancement layer is to be formed on the inner tube of a tyre by the fiber that is coated with adhesive so that around the inner tube of a tyre of fiber in described inflation on fix in position.

32. ball for sports according to claim 30 is characterized in that: also be included in the intermediary layer that described first enhancement layer outside forms.

33. ball for sports according to claim 32 is characterized in that: described intermediary layer immerses formation in 2 minutes in the conductive agent by the inner tube of a tyre that will have described first enhancement layer.

34. ball for sports according to claim 30 is characterized in that: described exodermis comprises the nonwoven layer of leather skin and backing.

35. ball for sports according to claim 30 is characterized in that: described exodermis is to be formed by the polygonal leather sheet that the multi-disc of making has an arc limit.

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