CN112933557A - High-sealing-performance PU (polyurethane) veneered football with butyl liner and preparation process of football - Google Patents
High-sealing-performance PU (polyurethane) veneered football with butyl liner and preparation process of football Download PDFInfo
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- CN112933557A CN112933557A CN202110146450.1A CN202110146450A CN112933557A CN 112933557 A CN112933557 A CN 112933557A CN 202110146450 A CN202110146450 A CN 202110146450A CN 112933557 A CN112933557 A CN 112933557A
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B41/00—Hollow inflatable balls
- A63B41/02—Bladders
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B41/00—Hollow inflatable balls
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B45/00—Apparatus or methods for manufacturing balls
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/18—Homopolymers or copolymers of hydrocarbons having four or more carbon atoms
- C08L23/20—Homopolymers or copolymers of hydrocarbons having four or more carbon atoms having four to nine carbon atoms
- C08L23/22—Copolymers of isobutene; Butyl rubber ; Homo- or copolymers of other iso-olefins
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/04—Homopolymers or copolymers of ethene
- C08J2323/08—Copolymers of ethene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/04—Homopolymers or copolymers of ethene
- C08J2423/08—Copolymers of ethene
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Physical Education & Sports Medicine (AREA)
- General Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Manufacturing & Machinery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
- Laminated Bodies (AREA)
- Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
Abstract
The invention relates to the technical field of a leather-coated football, in particular to a PU leather-coated football with a butyl liner based on high sealing performance and a preparation process thereof. The butyl inner container PU leather football comprises PU leather, a modified EVA film and an inner container, wherein in the preparation process of the butyl inner container PU leather football, the modified EVA film is prepared from ethylene-vinyl acetate copolymer and ZPOE plastic, so that a ball body is softer, has very good toughness and impact resistance, and avoids the deformation of the ball body.
Description
Technical Field
The invention relates to the technical field of a leather-coated football, in particular to a PU leather-coated football with a butyl liner based on high sealing performance and a preparation process thereof.
Background
Football sports is one of favorite sports items of people, football is various at present, in recent years, as the preparation process of synthetic leather is continuously developed and perfected, the application field is continuously developed, and at present, synthetic leather becomes an important raw material for producing football;
the air tightness and toughness of the football prepared by the existing football process are poor, so that the impact resistance is poor, the football is easy to deform, and the service life is influenced, therefore, the defects of the prior art are improved by a novel football preparation process.
Disclosure of Invention
The invention aims to provide a butyl liner PU (polyurethane) veneered football based on high sealing property and a preparation process thereof, so as to solve the problems in the background technology.
In order to achieve the above purpose, in one aspect, the invention provides a butyl liner PU skinned football based on high sealing property, which comprises the following raw materials: PU leather, a modified EVA film and an inner container;
the PU leather is prepared from polyurethane resin and nylon-66 salt through a dry method manufacturing process;
the modified EVA film comprises ethylene-vinyl acetate copolymer and ZPOE plastic;
the inner container comprises a butyl inner container and a piece of attaching cloth.
As a further improvement of the technical scheme, the ZPOE plastic is selected from high polymers of ethylene and limonene, so that the sphere is softer, has very good toughness and impact resistance, and avoids the deformation of the sphere.
As a further improvement of the technical scheme, the butyl liner is formed by synthesizing and copolymerizing isobutene and isoprene, and the butyl liner has better air tightness, is softer and has better hand feeling than a rubber liner.
As a further improvement of the technical scheme, the attaching cloth consists of 18 pounds of cloth and reinforcing coating;
the reinforced coating comprises 20-30% of epoxy resin, 10-20% of modifier, 1-5% of reinforcing agent and 5-10% of filler;
the preparation process of the bonding cloth comprises the following steps: epoxy resin, a modifier, a reinforcing agent and a filler are mixed and stirred to prepare a viscous coating, and then the coating is uniformly coated on the surface of 18 pounds of cloth, so that the developed laminated cloth has very good tensile strength, and the good appearance of the inner container is ensured.
As a further improvement of the technical scheme, the modifier is selected from any one of diisocyanate, silicone resin and polyester resin, and the impact strength and flexibility of the coating can be improved and the heat resistance can be enhanced by modifying the epoxy resin through the modifier.
As a further improvement of the technical scheme, the reinforcing agent is selected from one or more of phthalic diester and 1, 2-dioctyl phthalate, has good compatibility with epoxy resin and comprehensive performance, and improves the tensile strength of 18 pounds of cloth.
As a further improvement of the technical scheme, the filler is selected from one or more of graphite powder, talcum powder, quartz powder, silica gel powder and asbestos fiber, the using amount of epoxy resin is reduced, the cost is reduced, the selected filler plays a role in increasing toughness and impact resistance, and meanwhile, the heat resistance and the abrasion resistance of the product are improved.
As a further improvement of the technical scheme, the polyurethane resin is diacid diamine polyurethane, and the chemical formula of the nylon-66 salt is as follows:
-[-NH-(CH2)6-NHCO-(CH2)4-CO-]-n。
on the other hand, the invention provides a preparation method of a butyl liner PU veneer football based on high sealing performance, which comprises any one of the butyl liner PU veneer football based on high sealing performance, and is characterized by comprising the following operation steps:
s1, mixing polyurethane resin and nylon-66 salt, and volatilizing a solvent in the polyurethane resin to obtain a multilayer film;
s2, attaching the multilayer film to the base fabric to obtain PU leather;
s3, mixing the ethylene-vinyl acetate copolymer with ZPOE plastic to obtain a modified EVA film;
s4, attaching the modified EVA film to the surface of the PU leather to obtain a shell;
s5, adding isobutene and isoprene raw materials into a rubber kneading machine for kneading treatment to obtain a butyl liner;
and S6, attaching the attaching cloth to the surface of the butyl liner to form the liner, and finally attaching the shell to the surface of the liner to form the finished product.
Preferably, the specification of the finished product is 5, the circumference is 685-.
Compared with the prior art, the invention has the beneficial effects that:
1. in the high-sealing-property-based PU (polyurethane) veneered football with the butyl liner and the preparation process thereof, the modified EVA film is prepared from the ethylene-vinyl acetate copolymer and ZPOE (styrene-ethylene-propylene-ethylene) plastic, so that the ball body is softer, has very good toughness and impact resistance, the deformation of the ball body is avoided, and the butyl liner formed by synthetic copolymerization of isobutene and isoprene has better air tightness, softness and better hand feeling than a rubber liner.
2. In the high-sealing-performance-based PU (polyurethane) veneered football with the butyl inner container and the preparation process thereof, the laminated cloth prepared by coating the reinforcing coating on the surface of the 18 pound cloth has very good tensile strength and ensures the good appearance of the inner container.
Drawings
Fig. 1 is an overall flow chart of embodiment 1.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Embodiment 1 high leakproofness based butyl inner bag PU veneer football and preparation technology thereof, including:
first, shell preparation
Mixing polyurethane resin and nylon-66 salt, and volatilizing a solvent in the polyurethane resin to obtain a multilayer film; attaching the multilayer film to the base fabric to prepare PU leather;
mixing ethylene-vinyl acetate copolymer and ZPOE plastic to prepare a modified EVA film; and then attaching the modified EVA film to the surface of the PU leather to prepare the shell.
Secondly, preparation of inner container
Mixing and stirring 20% of epoxy resin, 20% of modifier, 5% of reinforcing agent and 10% of filler to prepare a viscous coating, and then uniformly coating the viscous coating on 18 pounds of cloth to prepare the attached cloth;
adding isobutene and isoprene raw materials into a rubber kneading machine for kneading treatment to obtain a butyl liner; and (5) bonding the bonding cloth with the surface of the butyl liner to prepare the liner.
Thirdly, preparation of finished product
Attaching the shell to the surface of the liner to obtain the final product.
Embodiment 2 high leakproofness based butyl inner bag PU veneer football and preparation technology thereof, includes:
first, shell preparation
Mixing polyurethane resin and nylon-66 salt, and volatilizing a solvent in the polyurethane resin to obtain a multilayer film; attaching the multilayer film to the base fabric to prepare PU leather;
mixing ethylene-vinyl acetate copolymer and ZPOE plastic to prepare a modified EVA film; and then attaching the modified EVA film to the surface of the PU leather to prepare the shell.
Secondly, preparation of inner container
Mixing and stirring 22.5% of epoxy resin, 17.5% of modifier, 4% of reinforcing agent and 9% of filler to prepare a viscous coating, and then uniformly coating the viscous coating on 18 pounds of cloth to prepare the laminated cloth;
adding isobutene and isoprene raw materials into a rubber kneading machine for kneading treatment to obtain a butyl liner; and (5) bonding the bonding cloth with the surface of the butyl liner to prepare the liner.
Thirdly, preparation of finished product
Attaching the shell to the surface of the liner to obtain the final product.
Embodiment 3 butyl inner bag PU veneer football and preparation technology based on high leakproofness includes:
first, shell preparation
Mixing polyurethane resin and nylon-66 salt, and volatilizing a solvent in the polyurethane resin to obtain a multilayer film; attaching the multilayer film to the base fabric to prepare PU leather;
mixing ethylene-vinyl acetate copolymer and ZPOE plastic to prepare a modified EVA film; and then attaching the modified EVA film to the surface of the PU leather to prepare the shell.
Secondly, preparation of inner container
Mixing and stirring 25% of epoxy resin, 15% of modifier, 3% of reinforcing agent and 7.5% of filler to prepare a viscous coating, and then uniformly coating the viscous coating on 18 pounds of cloth to prepare the attached cloth;
adding isobutene and isoprene raw materials into a rubber kneading machine for kneading treatment to obtain a butyl liner; and (5) bonding the bonding cloth with the surface of the butyl liner to prepare the liner.
Thirdly, preparation of finished product
Attaching the shell to the surface of the liner to obtain the final product.
Embodiment 4 high leakproofness based butyl inner bag PU veneer football and preparation technology thereof, including:
first, shell preparation
Mixing polyurethane resin and nylon-66 salt, and volatilizing a solvent in the polyurethane resin to obtain a multilayer film; attaching the multilayer film to the base fabric to prepare PU leather;
mixing ethylene-vinyl acetate copolymer and ZPOE plastic to prepare a modified EVA film; and then attaching the modified EVA film to the surface of the PU leather to prepare the shell.
Secondly, preparation of inner container
Mixing and stirring 27.5% of epoxy resin, 12.5% of modifier, 2% of reinforcing agent and 6% of filling agent to prepare a viscous coating, and then uniformly coating the viscous coating on 18 pounds of cloth to prepare the laminated cloth;
adding isobutene and isoprene raw materials into a rubber kneading machine for kneading treatment to obtain a butyl liner; and (5) bonding the bonding cloth with the surface of the butyl liner to prepare the liner.
Thirdly, preparation of finished product
Attaching the shell to the surface of the liner to obtain the final product.
Embodiment 5 butyl inner bag PU veneer football and preparation technology based on high leakproofness includes:
first, shell preparation
Mixing polyurethane resin and nylon-66 salt, and volatilizing a solvent in the polyurethane resin to obtain a multilayer film; attaching the multilayer film to the base fabric to prepare PU leather;
mixing ethylene-vinyl acetate copolymer and ZPOE plastic to prepare a modified EVA film; and then attaching the modified EVA film to the surface of the PU leather to prepare the shell.
Secondly, preparation of inner container
Mixing and stirring 30% of epoxy resin, 10% of modifier, 1% of reinforcing agent and 5% of filler to prepare a viscous coating, and then uniformly coating the viscous coating on 18 pounds of cloth to prepare laminated cloth;
adding isobutene and isoprene raw materials into a rubber kneading machine for kneading treatment to obtain a butyl liner; and (5) bonding the bonding cloth with the surface of the butyl liner to prepare the liner.
Thirdly, preparation of finished product
Attaching the shell to the surface of the liner to obtain the final product.
The modifier is selected from any one of diisocyanate, silicone resin and polyester resin, and the epoxy resin is modified by the modifier, so that the impact strength and flexibility of the coating can be improved, and the heat resistance is enhanced;
the reinforcing agent is selected from one or a mixture of more of diester phthalate and dioctyl-1, 2-phthalate, has good compatibility with epoxy resin and comprehensive performance, and improves the tensile strength of 18 pounds of cloth;
the filler is selected from one or more of graphite powder, talcum powder, quartz powder, silica gel powder and asbestos fiber, the using amount of epoxy resin is reduced, the cost is reduced, the selected filler plays a role in increasing toughness and impact resistance, and meanwhile, the heat resistance and the wear resistance of the product are improved.
In the high-sealing-property-based PU (polyurethane) veneered football and the preparation process thereof, the air tightness of the football is improved, and the toughness and the impact resistance are enhanced, and the high-sealing-property-based PU veneered football prepared by the invention is specifically shown in a table 1:
TABLE 1
| Impact strength (J/m) | Tensile strength/MPa | Air permeability ml/cm2·h | |
| Example 1 | 69 | 14.9 | 580 |
| Example 2 | 72 | 15.4 | 582 |
| Example 3 | 90 | 17.6 | 580 |
| Example 4 | 83 | 13.2 | 580 |
| Example 5 | 79 | 12.9 | 580 |
As shown in Table 1, in the butyl liner PU veneer soccer balls based on high leakproofness prepared by the invention, in examples 1-5, when 25 parts of epoxy resin, 15 parts of modifier, 3 parts of reinforcing agent and 7.5 parts of filler, the impact strength of the soccer balls is best, and the tensile strength is strongest, so it can be seen that the comprehensive performance of the butyl liner PU veneer soccer balls based on high leakproofness prepared by the amount of material in example 3 is better.
Comparative example 1 a PU-skinned football with a rubber liner and a preparation process thereof, comprising:
first, shell preparation
Mixing polyurethane resin and nylon-66 salt, and volatilizing a solvent in the polyurethane resin to obtain a multilayer film; attaching the multilayer film to the base fabric to prepare PU leather;
mixing ethylene-vinyl acetate copolymer and ZPOE plastic to prepare a modified EVA film; and then attaching the modified EVA film to the surface of the PU leather to prepare the shell.
Secondly, preparation of inner container
Mixing and stirring 25% of epoxy resin, 15% of modifier, 3% of reinforcing agent and 7.5% of filler to prepare a viscous coating, and then uniformly coating the viscous coating on 18 pounds of cloth to prepare the attached cloth;
and (5) attaching the attaching cloth to the surface of the common rubber liner to manufacture the liner.
Thirdly, preparation of finished product
Attaching the shell to the surface of the liner to obtain the final product.
Comparative example 2 a butyl inner bladder PU skinned soccer ball based on high leakproofness and a process for making the same, comprising:
first, shell preparation
Mixing polyurethane resin and nylon-66 salt, and volatilizing a solvent in the polyurethane resin to obtain a multilayer film; attaching the multilayer film to the base fabric to prepare PU leather;
mixing ethylene-vinyl acetate copolymer and ZPOE plastic to prepare a modified EVA film; and then attaching the modified EVA film to the surface of the PU leather to prepare the shell.
Secondly, preparation of inner container
Adding isobutene and isoprene raw materials into a rubber kneading machine for kneading treatment to obtain a butyl liner; and (3) attaching 18 pounds of cloth to the surface of the butyl liner to prepare the liner.
Thirdly, preparation of finished product
Attaching the shell to the surface of the liner to obtain the final product.
The high-sealing-property-based PU (polyurethane) veneered football prepared by the invention has good air tightness and good impact strength, is in great relation with the added butyl liner and the added veneer cloth, and in order to verify the related technical scheme, the applicant performs the following tests:
comparative examples 1 to 2: by adopting the method of the embodiment 3, under the condition of changing the butyl liner and the attaching cloth, the relevant indexes of the prepared PU attaching football are detected, and the concrete indexes are shown in the table 2:
TABLE 2
| Impact strength (J/m) | Tensile strength/MPa | Air permeability ml/cm2·h | |
| Comparative example 1 | 88 | 17.3 | 2710 |
| Comparative example 2 | 45 | 11.1 | 580 |
| Example 3 | 90 | 17.6 | 580 |
As shown in Table 2, in comparative example 1, the air permeability of the soccer ball was significantly increased by changing the butyl bladder, and in comparative example 2, the impact strength and tensile strength of the soccer ball were significantly decreased by changing the laminated cloth, which were significantly insufficient compared to example 3, and thus, it was found that the butyl bladder and the laminated cloth were important factors for changing the air permeability and impact resistance of the PU-skinned soccer ball.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. Butyl inner bag PU veneer football based on high leakproofness, its characterized in that includes the following raw materials: PU leather, a modified EVA film and an inner container;
the PU leather is prepared from polyurethane resin and nylon-66 salt through a dry method manufacturing process;
the modified EVA film comprises ethylene-vinyl acetate copolymer and ZPOE plastic;
the inner container comprises a butyl inner container and a piece of attaching cloth.
2. The high-leakproofness butyl liner PU (polyurethane) skinned football according to claim 1, characterized in that: the ZPOE plastic is selected from the group consisting of high polymers of ethylene and limonene.
3. The high-leakproofness butyl liner PU (polyurethane) skinned football according to claim 1, characterized in that: the butyl liner is formed by synthetic copolymerization of isobutene and isoprene.
4. The high-leakproofness butyl liner PU (polyurethane) skinned football according to claim 1, characterized in that: the laminated cloth consists of 18 pounds of cloth and reinforcing coating;
the reinforced coating comprises 20-30% of epoxy resin, 10-20% of modifier, 1-5% of reinforcing agent and 5-10% of filler;
the preparation process of the bonding cloth comprises the following steps: mixing and stirring the epoxy resin, the modifier, the reinforcing agent and the filler to prepare a viscous coating, and then uniformly coating the coating on the surface of 18 pounds of cloth.
5. The high-leakproofness butyl liner PU (polyurethane) skinned football according to claim 4, characterized in that: the modifier is selected from any one of diisocyanate, silicone resin and polyester resin.
6. The high-leakproofness butyl liner PU (polyurethane) skinned football according to claim 4, characterized in that: the reinforcing agent is selected from one or more of phthalic diester and 1, 2-dioctyl phthalate.
7. The high-leakproofness butyl liner PU (polyurethane) skinned football according to claim 4, characterized in that: the filler is selected from one or more of graphite powder, talcum powder, quartz powder, silica gel powder and asbestos fiber.
8. The high-leakproofness butyl liner PU (polyurethane) skinned football according to claim 1, characterized in that: the polyurethane resin is diacid diamine polyurethane, and the chemical formula of the nylon-66 salt is as follows:
-[-NH-(CH2)6-NHCO-(CH2)4-CO-]-n。
9. the preparation method of the high-sealing-property-based butyl liner PU-coated football comprises the high-sealing-property-based butyl liner PU-coated football of any one of claims 1-8, and is characterized by comprising the following operation steps:
s1, mixing polyurethane resin and nylon-66 salt, and volatilizing a solvent in the polyurethane resin to obtain a multilayer film;
s2, attaching the multilayer film to the base fabric to obtain PU leather;
s3, mixing the ethylene-vinyl acetate copolymer with ZPOE plastic to obtain a modified EVA film;
s4, attaching the modified EVA film to the surface of the PU leather to obtain a shell;
s5, adding isobutene and isoprene raw materials into a rubber kneading machine for kneading treatment to obtain a butyl liner;
and S6, attaching the attaching cloth to the surface of the butyl liner to form the liner, and finally attaching the shell to the surface of the liner to form the finished product.
10. The preparation method of the high-sealing-property-based butyl liner PU-coated football according to claim 9, wherein: the specification of the finished product is 5, the circumference is 685-695mm, and the weight is 410-450 g.
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