EP3219367A1 - Balle cousue et son procédé de fabrication - Google Patents

Balle cousue et son procédé de fabrication Download PDF

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Publication number
EP3219367A1
EP3219367A1 EP16171436.5A EP16171436A EP3219367A1 EP 3219367 A1 EP3219367 A1 EP 3219367A1 EP 16171436 A EP16171436 A EP 16171436A EP 3219367 A1 EP3219367 A1 EP 3219367A1
Authority
EP
European Patent Office
Prior art keywords
layer
rubber
yarn
ball
inner tube
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP16171436.5A
Other languages
German (de)
English (en)
Other versions
EP3219367B1 (fr
Inventor
Yadong Lu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tongcheng Huilong Sports Articles Co Ltd
Original Assignee
Tongcheng Huilong Sports Articles Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tongcheng Huilong Sports Articles Co Ltd filed Critical Tongcheng Huilong Sports Articles Co Ltd
Publication of EP3219367A1 publication Critical patent/EP3219367A1/fr
Application granted granted Critical
Publication of EP3219367B1 publication Critical patent/EP3219367B1/fr
Priority to HRP20181556TT priority Critical patent/HRP20181556T1/hr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • 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
    • A63B41/08—Ball covers; Closures therefor
    • 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
    • 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
    • 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
    • A63B2041/005—Hollow inflatable balls with counterweight for adjusting the centre of gravity

Definitions

  • the present invention relates to the field of sports goods, and more particularly to a sewn ball and a manufacturing method thereof.
  • the inner tube of conventional sewn balls includes three structural forms as follows: (1) rubber inner tube; (2) yarn tire by winding a layer of yarn around the exterior of the rubber inner tube; and (3) cloth tire by attaching a layer of cloth to the exterior of the rubber inner tube. Shortcomings of the above three structural forms are respectively described as below.
  • Shortcomings of the first structure are: firstly, due to the flexibility, the rubber inner tube is able to expand unlimitedly without forming while being injected with the gas, and the expanding force is directly applied to the housing, so that the housing easily bursts to expose seaming lines till the ball finally bursts; secondly, the rubber inner tube has poor gas tightness, after a long period, the sufficient gas gradually slowly leaks, so that the gas always needs to be added, thereby it is not convenient for usage; thirdly, the gas nozzle of the rubber inner tube is located at one side thereof, the gas nozzle and a circle of the yarn reinforcement layer, which is around the gas nozzle and attached to the rubber inner tube, allow the center of gravity of the whole ball to trend to the side where the gas nozzle is located, so that the center of gravity of the ball is unbalanced, which leads to unstable flight.
  • Shortcomings of the second structure are: a layer of yarn is wound around the exterior of the rubber inner tube, and the basic circumference of the rubber inner tube is restrained with the yarn to set the shape of the rubber inner tube and increase the striking breaking strength of the ball.
  • the yarn tire is injected with the gas
  • the whole ball is hard and easily hits hands.
  • flight balance becomes poor when the ball flies. Accordingly, the hard ball not only has poor rebound, but also results in poor sense control force of the player.
  • the yarn is mechanically wound around the rubber inner tube, and however, the mechanical wound yarn tire is unable to ensure the circumferential error of the ball, the circumferential error generally reaches 3-5 mm, which leads to poor balance and bouncing ability, and unstable flight of the ball.
  • a layer of cloth is attached to the exterior of the rubber inner tube to form the cloth tire.
  • Chinese Patent No. 201020150442.1 discloses a football, which includes a sheath and a liner, wherein a layer of cloth is located between the sheath and the liner. Compared with the yarn tire, the cloth tire has soft surface after being injected with the gas. However, the cloth tire, obtained by replacing the yarn with the cloth, has poor forming, low striking breaking strength of the ball, and large circumferential error (in generally, which reaches 3-5 mm), so that it has poor bouncing ability, poor balance, unstable flight, insufficient strength and poor durability.
  • the rubber inner tube is able to continuously expand with the increase of the internal gas, so that it is unable to control the ball to achieve the determined shape and size, thus the gas leakage easily appears.
  • the yarn tire is able to avoid a burst during tire inflation and plays a role in forming
  • the yarns are always unevenly wound, so that the ball is unable to be completely controlled to achieve the determined shape.
  • the cloth tire is able to play a role in forming, the cloth has various latitude and longitude lines, which leads to uneven tensions, so that it is unable to completely control the ball to achieve the determined shape.
  • the housing thereof comprises 20 regularly hexagonal leather pieces and 12 regularly pentagonal leather pieces. Accordingly, these leather pieces need to be attached or sewn one by one, and there are at least 32 attaching or sewing actions. The more attaching or sewing actions there are, the lower productive efficiency. Furthermore, the attaching or sewing is highly difficult and low in accuracy, so that the manufactured ball is bad to handle and avoiding circumferential error cannot be ensured.
  • Chinese Patent No. To reduce the number of leather pieces of the housing for decreasing the difficulties of attaching or sewing, Chinese Patent No.
  • 201320488758.5 discloses a ten-piece sports football, which comprises external leather forming a spherical surface, wherein the external leather comprises two integrally formed four-leather-units and eight integrally formed three-leather-units; every integrally formed four-leather-unit comprises two regularly hexagonal leather pieces and two regularly pentagonal leather pieces, the two regularly hexagonal leather pieces and the two regularly pentagonal leather pieces are arranged in a straight line, the two regularly hexagonal leather pieces are located at a middle of the straight line, the two regularly pentagonal leather pieces are respectively located at two sides of the straight line; every integrally formed three-leather-unit comprises two regularly hexagonal leather pieces and one regularly pentagonal leather piece, the two regularly hexagonal leather pieces and the regularly pentagonal leather piece are arranged in a straight line, the two regularly hexagonal leather pieces are connected with each other, the regularly pentagonal leather piece is connected with one of the two regularly hexagonal leather pieces.
  • An object of the present invention is to overcome shortcomings of the prior art for providing a sewn ball which has excellent bouncing ability, high strength, good durability, small circumferential error, and excellent balance and flight stability.
  • the present invention provides a sewn ball, in accordance with claims which follow, which comprises an inner tube and a housing, wherein the inner tube comprises a tube body, a yarn layer and a rubber layer; the yarn layer is attached to an external surface of the tube body, the rubber layer is attached to an external surface of the yarn layer and is vulcanized, in such a manner that a rubber raw material of the rubber layer permeates through yarn gaps of the yarn layer, so as to integrate the tube body, the yarn layer with the rubber layer; wherein the housing wraps around and is attached to the inner tube.
  • the sewn ball is a sewn football or a sewn volleyball.
  • a balance plate is provided on the inner tube and located at a position where it is coaxially aligned with a gas nozzle and symmetrical to a spherical center.
  • the thickness of the yarn layer is 0.1-1 mm.
  • the circumferential error of the sewn ball is less than 2 mm.
  • the housing comprises 6-32 leather pieces.
  • the tube body is a double layer tube body comprising an internal layer body and an external layer body tightly attached to the internal layer body.
  • the rubber layer is an ordinary rubber layer or a foamed rubber layer; after vulcanization, an external surface of the rubber layer forms a layer of dense rubber membrane.
  • the rubber layer comprises an internal layer rubber, a yarn reinforcement layer and an external layer rubber, wherein the internal layer rubber is attached to an interior of the yarn layer, the yarn reinforcement layer is attached to an external surface of the internal layer rubber, the external layer rubber is attached to an external surface of the yarn reinforcement layer.
  • the present invention also provides a method of manufacturing a sewn ball, which comprises steps of:
  • step (2C) a balance plate is attached to a position where it is coaxially aligned with the gas nozzle and symmetrical to a spherical center on the rubber raw material ball, and then step (2D) is processed.
  • a sewn ball comprising an inner tube 5 and a housing 4, wherein the inner tube 5 comprises a tube body 1, a yarn layer 2 and a rubber layer 3, wherein the yarn layer 2 is attached to an external surface of the tube body 1; the rubber layer 3 is attached to an external surface of the yarn layer 2 and is then vulcanized, in such a manner that a rubber raw material of the rubber layer 3 permeates through the yarn layer 2, so as to integrate the tube body 1, the yarn layer 2 with the rubber layer 3; and the housing wraps around and is attached to the inner tube 5.
  • a thickness of the yarn layer 2 is 0.1-1 mm. Under a premise of guaranteeing enough restraint of the yarn layer 2 to the tube body 1, the thickness of the yarn layer 2 is properly selected for improving the strength of the inner tube 5, and simultaneously giving consideration to both the surface hardness and the bouncing ability of the ball.
  • a balance plate 7 is located on the inner tube 5 provided by the present invention, and is coaxially aligned with a gas nozzle 6 and symmetrical to a spherical center, such that the whole center of gravity of the ball lies in the spherical center.
  • the rubber layer 3 of the present invention is an ordinary rubber layer or a foamed rubber layer. After vulcanization, an external surface of the rubber layer 3 forms a layer of dense rubber membrane. While the foamed rubber layer is adopted, after vulcanization, the surface of the inner tube 5 forms numerous foaming holes, so that the ball is soft, and meanwhile, the external surface of the rubber layer 3 forms the layer of dense rubber membrane, thus a gas tightness of the ball is improved and a leakage of gas inside the ball is avoided. Therefore, the ball has excellent gas tightness and a compact structure.
  • the tube body 1 is a double layer tube body comprising an internal layer body 1-1 and an external layer body 1-2 tightly attached to the internal layer body, wherein the internal layer body 1-1 is an ordinary single tube, the external layer body 1-2 is able to limit the internal layer body 1-1 to evenly expand to a needed shape and size, and a hardness-softness of the internal layer body, so that any leakage phenomenon is effectively avoided to improve the service life of the ball.
  • the rubber layer 3 comprises an internal layer rubber 3-1, a yarn reinforcement layer 3-2 and an external layer rubber 3-3, wherein the internal layer rubber 3-1 is attached to an interior of the yarn layer 2, the yarn reinforcement layer 3-2 is attached to an external surface of the internal layer rubber 3-1, the external layer rubber 3-3 is attached to an external surface of the yarn reinforcement layer 3-2.
  • the yarns are always unevenly wound, so that the ball is unable to be completely controlled to achieve a determined shape.
  • the rubber layer 3 of the present invention further adopts sandwiching the yarn reinforcement layer 3-2 between the internal layer rubber 3-1 and the external layer rubber 3-3.
  • the yarn reinforcement layer 3-2 enhances the strength of impact resistance of the ball, thus ensuring a resilience strength and an excellent bouncing ability and prolonging the service life of the ball.
  • the sewn ball of the present invention is a sewn football or a sewn volleyball.
  • the housing of the present invention comprises 6-32 leather pieces. These leather pieces are sewn and connected with each other to form the housing of the sewn ball, 1-4 edges which are not sewn are left to act as an opening for installing the inner tube.
  • the housing 4 comprises eight integrally formed dual-leather-units 4-1 and eight integrally formed four-leather-units 4-2, wherein every dual-leather-unit 4-1 comprises two regular hexagon leather pieces connected with each other; every four-leather-unit 4-2 comprises three regular pentagon leather pieces and a regular hexagon leather piece, the three regular pentagon leather pieces are not adjacent to each other and are connected with the regular hexagon leather piece.
  • the structure of the housing 4 reduces the amount of leather pieces thereof, decreases the amount of sewing of the leather pieces, reduces sewing difficulty, and meanwhile, saves raw materials, and improves integral roundness of the spherical surface of the sewn football.
  • the present invention is able to better use residual materials, and save costs of raw materials, thereby better meeting needs for sewing footballs in mass production.
  • a manufacturing method of the sewn ball provided by the present invention which comprises steps of:
  • a balance plate 7 is attached to a position where is coaxially aligned with the gas nozzle 6 and symmetrical to a spherical center on the rubber raw material ball, and then the step (2D) is processed.
  • the balance plate 7 is a rubber plate with a weight equivalent to the gas nozzle. The balance plate 7 ensures that the center of gravity of the whole ball lies in the spherical center so as to avoid the ball to derivate from the spherical center for affecting the flight stability of the ball.
  • the rubber raw material of the rubber layer 3 permeates through the yarn gaps of the yarn layer 2, in such a manner that the tube body 1, the yarn layer 2 and the rubber layer 3 form a whole to form the inner tube 5 sandwiching the yarns between an inner rubber and an outer rubber, which has compact structure and excellent gas tightness, not only ensures a surface softness after injecting the gas into the inner tube 5, but also increases a rebound ability, and simultaneously, the vulcanizing mould ensures that the circumferential error of the vulcanizing inner tube 5 prepared by vulcanizing mould unloading is in an error range, thereby greatly improving the bouncing ability, balance and flight stability of the ball, avoiding the circumferential error of the inner tube 5 to accumulate to the housing, which leads to a larger accumulated circumferential error of the ball, and affects the bouncing ability, the balance and the flight stability of the ball.
  • the opening is sewn
  • the sewn ball is then put into the reshaping mould, pressurized and reshaped, so as to ensure that the circumferential error of the obtained sewn ball is less than 2 mm.
  • the present invention overcomes the shortcomings of the prior art, and puts the inner tube 5 into the housing 4 after coating the binder on the surface of the inner tube 5 or directly puts the inner tube 5 into the housing 4 without coating the binder on the surface of the inner tube 5, which leads to the uncontrollable circumferential error of the surface of the housing 4.
  • the circumferential error of conventional sewn balls reaches 3-5 mm. Accordingly, the ball has poor bouncing ability, poor balance and unstable flight.
  • the inner tube 5 obtained by the prior art is vulcanized with the vulcanizing mould, so that the circumferential error of the obtained inner tube 5 is similarly unable to be controlled, thereby leading to large circumferential error of the inner tube 5 and directly affecting the circumferential error of the sewn ball.
  • the circumferential error of the sewn ball provided by the present invention is less than 2 mm, that of the inner tube 5 is controlled with the vulcanizing mould, and that of the sewn ball is controlled with the reshaping mould.
  • the circumferential error of the inner tube 5 and the sewn ball gives consideration to both the bouncing ability of the ball and the manufacturing cost of production, which includes a control cost of a circumferential accuracy of an internal surface of the vulcanizing mould and the reshaping mould.
  • the surface of the inner tube 5 prepared by vulcanizing mould unloading forms the layer of dense rubber membrane, so that the inner tube 5 has excellent gas tightness and durability.
EP16171436.5A 2016-03-18 2016-05-25 Balle cousue et son procédé de fabrication Not-in-force EP3219367B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
HRP20181556TT HRP20181556T1 (hr) 2016-03-18 2018-09-28 Zašivena lopta i postupak njezine proizvodnje

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610156079.6A CN105797328B (zh) 2016-03-18 2016-03-18 一种车缝球及其制作工艺

Publications (2)

Publication Number Publication Date
EP3219367A1 true EP3219367A1 (fr) 2017-09-20
EP3219367B1 EP3219367B1 (fr) 2018-07-04

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP16171436.5A Not-in-force EP3219367B1 (fr) 2016-03-18 2016-05-25 Balle cousue et son procédé de fabrication

Country Status (6)

Country Link
US (1) US20160243409A1 (fr)
EP (1) EP3219367B1 (fr)
CN (1) CN105797328B (fr)
ES (1) ES2689317T3 (fr)
HR (1) HRP20181556T1 (fr)
PT (1) PT3219367T (fr)

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CN107469307A (zh) * 2017-08-31 2017-12-15 吴新程 一种防爆跳跳球
CN107596645A (zh) * 2017-08-31 2018-01-19 吴新程 一种音乐跳跳球
CN107551493B (zh) * 2017-08-31 2021-10-26 郑妙才 一种拉力跳跳球
CN108499051A (zh) * 2018-04-09 2018-09-07 商洛学院 一种排球制作工艺
CN109276860A (zh) * 2018-11-26 2019-01-29 姚月良 运动球和运动球制作方法
CN109865263A (zh) * 2019-04-16 2019-06-11 安平 一体成型球及制备工艺
CN110051993B (zh) * 2019-05-29 2023-10-24 厦门元保运动器材有限公司 一种运动球及其制备方法
CN110393902A (zh) * 2019-08-02 2019-11-01 陈红维 一种发泡中胎及贴皮球与制作方法
CN112190889B (zh) * 2020-09-27 2021-10-29 厦门元保运动器材有限公司 一种仿手工机缝球的制备方法及其制备的仿手工机缝球
CN112870657A (zh) * 2021-02-03 2021-06-01 天长市正牧铝业科技有限公司 基于高弹性橡胶外皮的pu贴皮篮球及其制备工艺

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US4333648A (en) * 1979-02-06 1982-06-08 Molten Rubber Industry Co., Ltd. Inflatable game ball
US5772545A (en) * 1996-12-20 1998-06-30 Ou; Tsung Ming Sportsball and manufacturing method thereof
US20040053717A1 (en) * 2002-09-12 2004-03-18 Awan Jarrar Hussain Machine stitched soccer balls with floating bladder
WO2008107914A2 (fr) * 2007-03-06 2008-09-12 Paradise Rubber Industries Vessie stratifiée sans couture en latex acrylonitrile butadiène carboxyle et son procédé de fabrication
US20090209374A1 (en) * 2008-02-19 2009-08-20 Topball Sports Inc. Sportsball with integral ball casing and bladder body
US20120283056A1 (en) * 2011-05-04 2012-11-08 Nike, Inc. Sport Ball With An Inflation-Retention Bladder

Also Published As

Publication number Publication date
EP3219367B1 (fr) 2018-07-04
ES2689317T3 (es) 2018-11-13
CN105797328A (zh) 2016-07-27
HRP20181556T1 (hr) 2018-11-30
US20160243409A1 (en) 2016-08-25
CN105797328B (zh) 2019-01-15
PT3219367T (pt) 2018-10-18

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