WO2007031315A1 - Zelluloidfreier tischtennisball - Google Patents
Zelluloidfreier tischtennisball Download PDFInfo
- Publication number
- WO2007031315A1 WO2007031315A1 PCT/EP2006/008963 EP2006008963W WO2007031315A1 WO 2007031315 A1 WO2007031315 A1 WO 2007031315A1 EP 2006008963 W EP2006008963 W EP 2006008963W WO 2007031315 A1 WO2007031315 A1 WO 2007031315A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- table tennis
- tennis ball
- ball according
- shell
- main component
- Prior art date
Links
Classifications
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B39/00—Hollow non-inflatable balls, i.e. having no valves
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
- Y10T428/1352—Polymer or resin containing [i.e., natural or synthetic]
Definitions
- the invention is directed on the one hand to a celluloid-free table tennis ball, preferably with a diameter of 38.5 to 48 mm, a weight between 2.0 and 4.5 grams and a shell thickness (approximately) between 0.20 mm and 1, 30 mm, wherein the shell is made of plastic, whose main component is an organic, uncrosslinked polymer, and on the other hand to a method for producing such a table tennis ball.
- the table tennis ball has a set of rules set by the International Table Tennis Federation (ITTF). These are specified in Technical Leaflet T3. The following properties are currently set:
- Diameter 39.5 mm to 40.5 mm;
- Rolling behavior On a rolling track with a length of 1 m, the ball shall not deviate more than 175 mm at a rolling speed of approximately 0.3 m / sec;
- a piston with a diameter of 20 mm and a compressive force of 50 N and a speed of 10 mm / min may push a ball at the pole between 0.71 and 0.84 mm;
- Hardness at the equator like pole knife; Values between 0.72 and 0.84 mm; 6. Variance of hardness in pole and equator measurement: less than 0.15 mm;
- Jumping behavior Jump height between 240 mm and 260 mm with a drop height of 305 mm on a standard steel block.
- Diameter and weight are properties largely defined by the International Rules, the rolling behavior is a specified and desired quality, while the mechanical properties defined according to FIGS. 4 to 8 describe the properties of the previously used celluloid ball.
- GB 1 222 901 from Dunlop describes the use of SAN acrylic elastomers as shell material.
- the ball was used in the 80s on a trial basis in the game operation, but then withdrawn due to irreversible material deformations (bumps). In addition, the ball did not have the same playing characteristics as celluloid.
- the invention initiates the problem of finding a base material for a table tennis ball, which is not celluloid and the production of balls with
- the organic polymer has no nitrogen atoms outside the main chain. Such nitration changes the material properties rather negatively.
- thermoplastic with a homogeneous structure without fillers and / or reinforcing materials, which can be processed better than inhomogeneous substances.
- the main constituent of the substance according to the invention should have the lowest possible water absorption, in particular a water absorption in normal climate according to DIN EN ISO 62 of less than 1, 0%. This excludes uncontrolled sources.
- the ball pressure hardness according to DIN EN ISO 2039-1 of the main constituent of the substance according to the invention should be 120 MPa or above, so that it can be used to produce a table tennis ball corresponding to the usual requirements.
- the invention recommends to use such substances whose main component has a density according to DIN EN ISO 1183 of 1, 22 g / cm 3 or more.
- the weight of a table tennis ball can be optimally adjusted in the given shell cross-section.
- the main constituent of the substance according to the invention should have a continuous service temperature of 80 ° C. or more (engineering thermoplastic, high-temperature thermoplastic) in order to be sufficiently resistant to thermal stresses. Even better suited Substances whose main constituent has a continuous use temperature of 150 ° C. or more (high-temperature thermoplastic).
- the main component is semicrystalline, can be adjusted by the partial parallel alignment of the polymer chains high stability, which is important especially in the relatively thin shell.
- the main constituent of the shell is one of the following substances: polyoxymethylene (POM), polybutylene terephthalate (PBT), polyethylene terephthalate (PET), polysulfone (PSU), polyetherimide (PEI), polyetheretherketone (PEEK), polyethylene naphthalate (PEN), polybutylene naphthalate (PBN), polytrimethylene terephthalate (PTT), or a copolymer of one or more of these substances.
- POM polyoxymethylene
- PBT polybutylene terephthalate
- PET polyethylene terephthalate
- PSU polysulfone
- PEI polyetherimide
- PEEK polyetheretherketone
- PEN polyethylene naphthalate
- PBN polybutylene naphthalate
- PTT polytrimethylene terephthalate
- copolymer of one or more of these substances are characterized by a good processability with various molding processes such as deep drawing or injection molding and can be
- the molding compound is a mixture or blend of one or more of the plastics mentioned, substances having a particularly advantageous property profile can be created.
- nanofillers preferably sheet silicates, nanotubes or spherical nanoparticles.
- the shell has a textured inner surface, and / or a structured outer surface. Furthermore, it is possible to give the shell a specific variation of the wall thickness in order to compensate for any inhomogeneities or anisotropies caused by the production process (for example, welding of two shell halves).
- Optimum properties of the table tennis ball when it reaches a jump height of 220 mm to 280 mm when hitting 305 mm height on a standard stone slab and on its surface at a pressure of 50 N on a surface of 20 mm diameter at the Ballober Structure one reversible deformation between 0.65 mm and 0.90 mm, with a standard deviation across different points of the surface of less than 0.20 mm.
- a method for producing a table tennis ball according to the invention is characterized in that a plurality of shell parts are produced in a first step, which are joined together in a subsequent step.
- the shells or shell parts can be produced by forming a blank, for example a flat body, for example by deep drawing. This process may possibly be carried out near or below the softening temperature, so that the material behavior is very easy to control.
- the shells or shell parts by shaping from a liquid or pasty raw material by means of a primary molding process, for example by injection molding. In such a case can be exactly affect the cross section and thus ensure a consistent shell thickness.
- the invention recommends that the shell parts are joined together by gluing, welding and / or clipping. While the former methods lead to a very stable table tennis ball, can be ensured with the latter method, a precisely defined cross-section of the ball at the joint. A sufficiently strong undercut ensures that the two shell halves can not be separated without destroying the ball.
- the production costs can be further reduced by having the shell parts directly in the tool, preferably by means of assembly injection molding or hollow body injection molding.
- thermoplastic material is particularly well malleable.
- a ping-pong ball was made from two injection-molded PEI shells that had been given a plasma surface treatment with a polyvinyl butyral hot melt adhesive. 2nd example:
- a ping-pong ball was made from two injection-molded PET half-shells, which have been given a plasma surface treatment with an epoxy-based reactive adhesive.
- a ping-pong ball was made from two deep-drawn POM half-shells, which after surface treatment are equipped with an epoxy-based reaction adhesive.
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Physical Education & Sports Medicine (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Prostheses (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020087005533A KR101331035B1 (ko) | 2005-09-15 | 2006-09-14 | 셀룰로이드를 사용하지 않은 탁구공 |
CN200680034220XA CN101272830B (zh) | 2005-09-15 | 2006-09-14 | 无赛璐珞的乒乓球 |
JP2008530414A JP5078894B2 (ja) | 2005-09-15 | 2006-09-14 | セルロイドを含まない卓球ボール及びその製造工程 |
US11/991,584 US8105183B2 (en) | 2005-09-15 | 2006-09-14 | Celluloid-free table-tennis ball |
EP06805719A EP1924331B1 (de) | 2005-09-15 | 2006-09-14 | Zelluloidfreier tischtennisball |
AT06805719T ATE554832T1 (de) | 2005-09-15 | 2006-09-14 | Zelluloidfreier tischtennisball |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005044178A DE102005044178A1 (de) | 2005-09-15 | 2005-09-15 | Tischtennisball |
DE102005044178.5 | 2005-09-15 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2007031315A1 true WO2007031315A1 (de) | 2007-03-22 |
Family
ID=37547080
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2006/008963 WO2007031315A1 (de) | 2005-09-15 | 2006-09-14 | Zelluloidfreier tischtennisball |
Country Status (8)
Country | Link |
---|---|
US (1) | US8105183B2 (de) |
EP (1) | EP1924331B1 (de) |
JP (1) | JP5078894B2 (de) |
KR (1) | KR101331035B1 (de) |
CN (1) | CN101272830B (de) |
AT (1) | ATE554832T1 (de) |
DE (1) | DE102005044178A1 (de) |
WO (1) | WO2007031315A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014175132A1 (ja) | 2013-04-26 | 2014-10-30 | 日本卓球株式会社 | 卓球ボールおよび卓球ボール用熱可塑性樹脂組成物 |
CN108042990A (zh) * | 2018-02-09 | 2018-05-18 | 华北理工大学 | 一种训练用乒乓球及其成型装置 |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005044178A1 (de) * | 2005-09-15 | 2007-03-29 | Thomas Dr. Wollheim | Tischtennisball |
CN101850170B (zh) * | 2009-03-31 | 2014-04-16 | 张辉伦 | 一种整体无缝结构的乒乓球 |
CN102838782B (zh) * | 2012-09-06 | 2015-04-22 | 无锡市科恩塑胶有限公司 | 一种替代赛璐珞的乒乓球用材料及制造方法 |
CN102896788A (zh) * | 2012-10-17 | 2013-01-30 | 丁杭峰 | 一种注塑成型的无赛璐珞乒乓球 |
CN103157255A (zh) * | 2012-12-26 | 2013-06-19 | 缪国平 | 运动用球 |
WO2015021138A1 (en) | 2013-08-06 | 2015-02-12 | Celanese International Corporation | Cellulose acetate table tennis balls and processes for making |
CN103394180B (zh) * | 2013-08-12 | 2016-02-17 | 信阳农林学院 | 抗形变乒乓球制作方法 |
CA2942074C (en) * | 2014-03-21 | 2020-04-07 | Weener Plastik Gmbh | Celluloid-free, substantially spherical hollow body and fabrication thereof |
DE102015003699A1 (de) | 2014-03-21 | 2015-09-24 | Weener Plastik Gmbh | Zelluloidfreier im Wesentlichen kugelförmiger Hohlkörper und dessen Fertigung |
FR3039076B1 (fr) * | 2015-07-22 | 2017-09-01 | Decathlon Sa | Balle de tennis de table et son procede de fabrication |
CN105080081A (zh) * | 2015-07-28 | 2015-11-25 | 上海红双喜股份有限公司 | 一种乒乓球二个半球连接结构和制造方法 |
CN105037990A (zh) * | 2015-08-27 | 2015-11-11 | 浙江曙光体育用品有限公司 | 一种乒乓球用纳米无机填料改性聚苯乙烯及其制备方法 |
CN105111671B (zh) * | 2015-09-28 | 2018-01-09 | 无锡市科恩塑胶有限公司 | 一种乒乓球及其制备方法 |
CN105694339B (zh) * | 2016-03-14 | 2019-05-10 | 赵帅 | 一种制备乒乓球的方法、制备材料及乒乓球 |
KR102402639B1 (ko) | 2017-11-24 | 2022-05-26 | 삼성전자주식회사 | 전자 장치 및 그의 통신 방법 |
CN109568905A (zh) * | 2018-12-11 | 2019-04-05 | 盐城市艾斯特体育器材有限公司 | 一种长寿命的乒乓球 |
CN109796760A (zh) * | 2018-12-11 | 2019-05-24 | 盐城市艾斯特体育器材有限公司 | 一种环保的乒乓球 |
CN109810449B (zh) * | 2018-12-27 | 2021-08-17 | 聚石化学(苏州)有限公司 | 一种乒乓球用asa复合材料及其制备方法和应用 |
US11786792B2 (en) * | 2022-02-26 | 2023-10-17 | Play Everywhere Sports, Llc | Table tennis apparatus and methods |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1479127A1 (de) * | 1964-10-14 | 1969-02-20 | Dunlop Rubber Co | Vorrichtung zur Herstellung von hohlen Gegenstaenden aus Kunststoff |
DE1478024A1 (de) * | 1964-10-14 | 1970-08-13 | Dunlop Co Ltd | Hohle Gegenstaende aus Kunststoff |
GB1222901A (en) * | 1968-07-04 | 1971-02-17 | Dunlop Co Ltd | Hollow plastic articles |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
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US2633894A (en) * | 1948-04-21 | 1953-04-07 | Raytheon Mfg Co | Plastic welding |
US3617589A (en) | 1964-10-14 | 1971-11-02 | James Jones Hinton | Method for manufacturing table-tennis balls |
JPS5017897A (de) * | 1973-05-30 | 1975-02-25 | ||
DE2611919A1 (de) * | 1975-03-27 | 1976-10-14 | Uop Inc | Verfahren zur gegenstromkontaktbehandlung von gasen und fluessigkeiten und kontaktkoerper hierfuer |
JPS5481936A (en) * | 1977-12-10 | 1979-06-29 | Dainippon Printing Co Ltd | Table tennis ball |
DE3438227A1 (de) * | 1984-10-18 | 1986-04-30 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V., 8000 München | Verfahren zur herstellung von tischtennisbaellen |
CN1057790A (zh) * | 1990-06-26 | 1992-01-15 | 广州市文教体育用品工业公司 | 改性聚苯乙烯乒乓球 |
JP2002035189A (ja) | 2000-07-26 | 2002-02-05 | Haaguru:Kk | 卓球用のボール及び卓球セット |
CN1410250A (zh) * | 2001-09-25 | 2003-04-16 | 骆益群 | 一种新型乒乓球和其制备方法 |
US20100210745A1 (en) * | 2002-09-09 | 2010-08-19 | Reactive Surfaces, Ltd. | Molecular Healing of Polymeric Materials, Coatings, Plastics, Elastomers, Composites, Laminates, Adhesives, and Sealants by Active Enzymes |
DE10315154A1 (de) * | 2003-04-03 | 2004-10-14 | Kuhn, Joachim, Dr. | Tischtennisball mit Struktur- und Formelementen in der Schale |
DE102005044178A1 (de) * | 2005-09-15 | 2007-03-29 | Thomas Dr. Wollheim | Tischtennisball |
-
2005
- 2005-09-15 DE DE102005044178A patent/DE102005044178A1/de not_active Withdrawn
-
2006
- 2006-09-14 EP EP06805719A patent/EP1924331B1/de not_active Revoked
- 2006-09-14 KR KR1020087005533A patent/KR101331035B1/ko not_active IP Right Cessation
- 2006-09-14 WO PCT/EP2006/008963 patent/WO2007031315A1/de active Application Filing
- 2006-09-14 US US11/991,584 patent/US8105183B2/en not_active Expired - Fee Related
- 2006-09-14 AT AT06805719T patent/ATE554832T1/de active
- 2006-09-14 CN CN200680034220XA patent/CN101272830B/zh not_active Expired - Fee Related
- 2006-09-14 JP JP2008530414A patent/JP5078894B2/ja not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1479127A1 (de) * | 1964-10-14 | 1969-02-20 | Dunlop Rubber Co | Vorrichtung zur Herstellung von hohlen Gegenstaenden aus Kunststoff |
DE1478024A1 (de) * | 1964-10-14 | 1970-08-13 | Dunlop Co Ltd | Hohle Gegenstaende aus Kunststoff |
GB1222901A (en) * | 1968-07-04 | 1971-02-17 | Dunlop Co Ltd | Hollow plastic articles |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014175132A1 (ja) | 2013-04-26 | 2014-10-30 | 日本卓球株式会社 | 卓球ボールおよび卓球ボール用熱可塑性樹脂組成物 |
KR20160002696A (ko) | 2013-04-26 | 2016-01-08 | 닛뽄탁규우가부시기가이샤 | 탁구공 및 탁구공용 열가소성 수지 조성물 |
US9623288B2 (en) | 2013-04-26 | 2017-04-18 | Nippon Takkyu Co., Ltd. | Table tennis ball and table tennis ball-use thermoplastic resin composition |
CN108042990A (zh) * | 2018-02-09 | 2018-05-18 | 华北理工大学 | 一种训练用乒乓球及其成型装置 |
CN108042990B (zh) * | 2018-02-09 | 2022-12-13 | 华北理工大学 | 一种训练用乒乓球及其成型装置 |
Also Published As
Publication number | Publication date |
---|---|
CN101272830B (zh) | 2013-03-27 |
US20100009791A1 (en) | 2010-01-14 |
CN101272830A (zh) | 2008-09-24 |
US8105183B2 (en) | 2012-01-31 |
JP2009507589A (ja) | 2009-02-26 |
ATE554832T1 (de) | 2012-05-15 |
KR20080044853A (ko) | 2008-05-21 |
EP1924331B1 (de) | 2012-04-25 |
EP1924331A1 (de) | 2008-05-28 |
DE102005044178A1 (de) | 2007-03-29 |
KR101331035B1 (ko) | 2013-11-20 |
JP5078894B2 (ja) | 2012-11-21 |
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