CN103172911A - Cellulose acetate sheet for table tennis balls and manufacturing method thereof - Google Patents
Cellulose acetate sheet for table tennis balls and manufacturing method thereof Download PDFInfo
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- CN103172911A CN103172911A CN2013101393569A CN201310139356A CN103172911A CN 103172911 A CN103172911 A CN 103172911A CN 2013101393569 A CN2013101393569 A CN 2013101393569A CN 201310139356 A CN201310139356 A CN 201310139356A CN 103172911 A CN103172911 A CN 103172911A
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- table tennis
- bexoid
- cellulose acetate
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/08—Oxygen-containing compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/01—Use of inorganic substances as compounding ingredients characterized by their specific function
- C08K3/013—Fillers, pigments or reinforcing additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/0008—Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
- C08K5/0016—Plasticisers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/0008—Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
- C08K5/0033—Additives activating the degradation of the macromolecular compound
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/0008—Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
- C08K5/0041—Optical brightening agents, organic pigments
Abstract
The invention discloses a cellulose acetate sheet for table tennis balls and a manufacturing method of the cellulose acetate sheet. The cellulose acetate sheet is very close to celluloid in mechanical property and processability, and can be used for replacing the celluloid to produce table tennis balls. The cellulose acetate sheet comprises the main component of cellulose acetate and the auxiliary materials of a plasticizer, a reinforcing material and a pigment. The manufacturing method of the cellulose acetate sheet comprises the steps of kneading, filtering, milling, calendering, heat-pressing, drying and flattening the raw materials to manufacture the sheet meeting requirements for manufacturing the table tennis balls. The material for manufacturing the table tennis balls overcomes the defect of inflammability of the celluloid and has good safety and environmental friendliness, and the manufacturing method of the material can be implemented by adopting the existing celluloid equipment and process.
Description
Technical field
The invention belongs to table tennis manufacturing technology field, be specifically related to a kind of table tennis with Bexoid and manufacture method.
Background technology
On September 6th, 2012, the applicant once proposed to State Intellectual Property Office of the People's Republic of China, and denomination of invention is the application for a patent for invention of " a kind of table tennis of alternative zylonite with material and manufacture method ", and application number is 201210327507.9.In this application, this material of record is comprised of cellulose acetate, softening agent, strongthener and pigment, and its manufacture method is that raw material is used the twin screw extruder extruding pelletization after high-speed mixing, then squeezes sheet with single screw extrusion machine.The present invention is an improvement to manufacture method in above-mentioned patent application, is characterized in utilizing existing zylonite production unit to make, and does not need separately to add the suite of equipment such as twin screw extruder and single screw extrusion machine.
Summary of the invention
The object of the present invention is to provide a kind of table tennis Bexoid, this material safety and environmental protection, on mechanical property and processing characteristics with zylonite very near alternative zylonite for the manufacture of table tennis.
Another object of the present invention is to provide the manufacture method of a kind of table tennis with Bexoid, this manufacture method is to utilize existing zylonite production unit to make, and table tennis manufacturing enterprise need not to drop into new equipment and can make.
For reaching this purpose, the present invention by the following technical solutions:
A kind of table tennis Bexoid, its material of main part is comprised of cellulose acetate and subsidiary material, and described subsidiary material comprise softening agent, strongthener, pigment and solvent.
Especially, described material of main part comprises by weight: 60-80 parts of cellulose acetates, 15-25 parts, softening agent, 1-5 parts of 1-10 parts of strongtheners and pigment, 50-65 parts of solvents.
Especially, described softening agent is one or more mixing of following material: dimethyl phthalate (DMP), diethyl phthalate (DEP), tri-n-butyl citrate (TBC), triethyl citrate (TEC), glycerine triacetate (GT), 2-camphanone.
Especially, described strongthener comprises calcium titanate whisker, ZnOw, magnesium sulfate crystal whisker and silsesquioxane (POSS) nano material.
Especially, described solvent is the mixture of alcohol, acetone and vinyl acetic monomer.
A kind of table tennis manufacture method of Bexoid is characterized in that: comprise the following steps:
1). preparation raw material: this material composition comprises by weight: 60-80 parts of cellulose acetates, 15-25 parts, softening agent, 1-5 parts of 1-10 parts of strongtheners and pigment, 50-65 parts of solvents,
2). knead: the raw material that step 1 is obtained is put into kneading machine and is kneaded, and temperature is controlled at 70 ± 2 ℃, and the time is 1.5～2 hours,
3). fine filtering: the sizing material that step 2 is obtained filters removal impurity with the plunger tpe filter,
4). refining is moulded: the sizing material after step 3 is filtered is put into rubber mixing machine, adds hot calender mixing, and temperature is controlled to be 70 ± 2 ℃, and 2～2.5 hours time, during discharging, solvent is controlled to be 15～18%, and resulting materials is repaiied on flitch and cut neatly,
5). briquetting: the material of step 4 is placed on thermocompressor, pressure 5～7Mpa, temperature is 92-94 ℃, hot pressing time is controlled to be 4-5 hours, then cooling pressurization, pressure is 15-20Mpa,
6). the section oven dry: step 5 gained bulk material with flaking power blader flakiness, is put in 40-50 ℃ of drying rooms and dried by the fire 6-8 days,
7). flatten: the sheet stock that will go out baking with flatting mill can be for the manufacture of table tennis after heating and flattening.
Beneficial effect of the present invention is that the manufacturing processed of described Bexoid utilizes existing zylonite production unit to carry out, and has saved investment.
Experiment shows, all very approaching with zylonite on mechanical property and processing characteristics according to material of the present invention, the former has guaranteed that the table tennis of being made by this material has identical motion characteristics with the table tennis of zylonite making, the latter guaranteed traditional table tennis manufacturing process and equipment applicable equally to novel material.
Because the major ingredient of this material is cellulose acetate, the civilian industry material at cellulose acetate traditionally, nonflammable explosive, therefore have good safety performance, thoroughly solved the safety problem of table tennis (comprising raw material) in producing, store, transport and using.
Description of drawings
Fig. 1 is the process flow sheet that table tennis of the present invention is used the manufacture method of Bexoid.
Embodiment
Further illustrate technical scheme of the present invention below in conjunction with accompanying drawing and by specific implementation method.
See also Fig. 1
Embodiment one:
A kind of table tennis Bexoid, its material of main part (by weight) comprising: cellulose acetate: 72 parts, dimethyl phthalate (DMP): 17 parts, diethyl phthalate (DEP): 8 parts, silsesquioxane (POSS) nano material: 2 parts, titanium dioxide: 1 part, alcohol: 6 parts, acetone: 27 parts, vinyl acetic monomer: 27 parts.
A kind of table tennis manufacture method of Bexoid, it comprises the following steps:
Step 1): with the raw material cellulose acetate: 72 parts, dimethyl phthalate (DMP): 17 parts, diethyl phthalate (DEP): 8 parts, silsesquioxane (POSS) nano material: 2 parts, titanium dioxide: 1 part, alcohol: 6 parts, acetone: 27 parts, vinyl acetic monomer: 27 parts, put into kneading machine after weighing accurately and knead, temperature is controlled at 70 ± 2 ℃, time 2 h.
2), the raw material that step 1 is obtained is put into rubber mixing machine after filtering with the plunger tpe filter, adds hot calender mixing, and temperature is controlled to be 70 ± 2 ℃, time 2 h, during discharging, solvent is controlled to be 15～18%, resulting materials repair on flitch cut neat.
3), the material of step 2 is placed on thermocompressor, pressure 5～7Mpa, temperature is 92-94 ℃, hot pressing time is controlled to be 4.5 hours, then cooling pressurization, pressure is 15-20Mpa.
4), step 3 gained bulk material with flaking power blader flakiness, is put in 40-50 ℃ of drying rooms and dried by the fire 8 days, going out rear the pressing with flatting mill of baking can be for the manufacture of table tennis.
Embodiment two:
A kind of table tennis comprising with Bexoid (by weight): cellulose acetate: 72 parts, and diethyl phthalate (DEP): 25 parts, the calcium titanate whisker: 5 parts, titanium dioxide: 1 part, alcohol: 6 parts, acetone: 27 parts, vinyl acetic monomer: 27 parts.
A kind of table tennis manufacture method of Bexoid, it comprises the following steps:
1): with the raw material cellulose acetate: 72 parts, diethyl phthalate (DEP): 25 parts, the calcium titanate whisker: 5 parts, titanium dioxide: 1 part, alcohol: 6 parts, acetone: 27 parts, vinyl acetic monomer: 27 parts, put into kneading machine and knead, temperature is controlled at 70 ± 2 ℃, time 2 h.
2), the raw material that mixes that step 1 is obtained is put into rubber mixing machine after filtering with the plunger tpe filter, adds hot calender mixing, and temperature is controlled to be 70 ± 2 ℃, time 2 h, during discharging, solvent is controlled to be 15～18%, resulting materials repair on flitch cut neat.
3), the material of step 2 is placed on thermocompressor, pressure 5～7Mpa, temperature is 92-94 ℃, hot pressing time is controlled to be 4.5 hours, then cooling pressurization, pressure is 15-20Mpa.
4), step 3 gained bulk material with flaking power blader flakiness, is put in 40-50 ℃ of drying rooms and dried by the fire 8 days, going out rear the pressing with flatting mill of baking can be for the manufacture of table tennis.
Embodiment three:
A kind of table tennis Bexoid, its material of main part (by weight) comprising: cellulose acetate: 75 parts, 2-camphanone: 23 parts, the calcium titanate whisker: 5 parts, titanium dioxide: 1 part, alcohol: 7 parts, acetone: 27 parts, vinyl acetic monomer: 27 parts.
A kind of table tennis manufacture method of Bexoid, it comprises the following steps:
Step 1), with the raw material cellulose acetate: 75 parts, 2-camphanone: 23 parts, the calcium titanate whisker: 5 parts, titanium dioxide: 1 part, alcohol: 6 parts, acetone: 27 parts, vinyl acetic monomer: 27 parts, to put into kneading machine and knead, temperature is at 70 ± 2 ℃, time 2 h.
Step 2), the raw material that mixes that step 1 is obtained is put into rubber mixing machine after filtering with the plunger tpe filter, adds hot calender mixing, temperature is controlled to be 70 ± 2 ℃, time 2 h, during discharging, solvent is controlled to be 15～18%, and resulting materials is repaiied on flitch and is cut neatly.
Step 3) is placed into the material of step 2 on thermocompressor, pressure 5～7Mpa, and temperature is 92-94 ℃, hot pressing time is controlled to be 4.5 hours, then cooling pressurization, pressure is 15-20Mpa.
Step 4) with flaking power blader flakiness, is put step 3 gained bulk material in 40-50 ℃ of drying rooms into and was dried by the fire 8 days, and going out rear the pressing with flatting mill of baking can be for the manufacture of table tennis.
Above embodiment has just set forth ultimate principle of the present invention and characteristic; the present invention is not limited by above-mentioned example; without departing from the spirit and scope of the present invention, the present invention also has various variations and change, and these variations and change all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (6)
1. table tennis Bexoid, it is characterized in that: its material of main part is comprised of cellulose acetate and subsidiary material, and described subsidiary material comprise the solvent that softening agent, strongthener, pigment and technological process are required.
2. table tennis Bexoid according to claim 1, is characterized in that, described material of main part comprises by weight: 60-80 parts of cellulose acetates, 15-25 parts, softening agent, 1-5 parts of 1-10 parts of strongtheners and pigment, 50-65 parts of solvents.
3. the described table tennis Bexoid of any one according to claim 1 and 2, it is characterized in that, described softening agent is one or more mixing of following material: dimethyl phthalate, diethyl phthalate, tri-n-butyl citrate, triethyl citrate, glycerine triacetate, 2-camphanone.
4. table tennis Bexoid according to claim 1, is characterized in that, described strongthener comprises calcium titanate whisker, ZnOw, magnesium sulfate crystal whisker and silsesquioxane (POSS) nano material.
5. table tennis Bexoid according to claim 1, is characterized in that, the required solvent of technological process is the mixed solvent of alcohol, acetone, vinyl acetic monomer composition.
6. the manufacture method of a table tennis use Bexoid, is characterized in that: comprise the following steps
1). preparation raw material: this material composition comprises by weight: 60-80 parts of cellulose acetates, 15-25 parts, softening agent, 1-5 parts of 1-10 parts of strongtheners and pigment, 50-65 parts of solvents,
2). knead: the raw material that step 1 is obtained is put into kneading machine and is kneaded, and temperature is controlled at 70 ± 2 ℃, and the time is 1.5～2 hours,
3). fine filtering: the sizing material that step 2 is obtained filters removal impurity with the plunger tpe filter,
4). refining is moulded: the sizing material after step 3 is filtered is put into rubber mixing machine, adds hot calender mixing, and temperature is controlled to be 70 ± 2 ℃, and 2～2.5 hours time, during discharging, solvent is controlled to be 15～18%, and resulting materials is repaiied on flitch and cut neatly,
5). briquetting: the material of step 4 is placed on thermocompressor, pressure 5～7Mpa, temperature is 92-94 ℃, hot pressing time is controlled to be 4-5 hours, then cooling pressurization, pressure is 15-20Mpa,
6). the section oven dry: step 5 gained bulk material with flaking power blader flakiness, is put in 40-50 ℃ of drying rooms and dried by the fire 6-8 days,
7). flatten: the sheet stock that will go out baking with flatting mill can be for the manufacture of table tennis after heating and flattening.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310139356.9A CN103172911B (en) | 2013-04-19 | 2013-04-19 | A kind of table tennis Bexoid and manufacture method |
| PCT/CN2013/001134 WO2014169409A1 (en) | 2013-04-19 | 2013-09-25 | Cellulose acetate sheet for table tennis ball, and manufacturing method therefor |
| JP2015511905A JP2015519444A (en) | 2013-04-19 | 2013-09-25 | Cellulose acetate sheet for table tennis and method for producing the same |
| DE112013000189.6T DE112013000189T5 (en) | 2013-04-19 | 2013-09-25 | Bexoid for table tennis balls and method for its production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310139356.9A CN103172911B (en) | 2013-04-19 | 2013-04-19 | A kind of table tennis Bexoid and manufacture method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103172911A true CN103172911A (en) | 2013-06-26 |
| CN103172911B CN103172911B (en) | 2016-05-04 |
Family
ID=48633134
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310139356.9A Active CN103172911B (en) | 2013-04-19 | 2013-04-19 | A kind of table tennis Bexoid and manufacture method |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP2015519444A (en) |
| CN (1) | CN103172911B (en) |
| DE (1) | DE112013000189T5 (en) |
| WO (1) | WO2014169409A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015021138A1 (en) * | 2013-08-06 | 2015-02-12 | Celanese International Corporation | Cellulose acetate table tennis balls and processes for making |
| CN104592686A (en) * | 2015-02-02 | 2015-05-06 | 江南大学 | Polyvinyl chloride material for manufacturing ping-pong balls and preparation method thereof |
| CN105001458A (en) * | 2015-08-19 | 2015-10-28 | 无锡市科恩塑胶有限公司 | Pingpong manufacturing material |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105641882B (en) * | 2015-12-31 | 2018-05-04 | 浙江曙光体育用品有限公司 | A kind of seamless table tennis and its manufacturing process |
| CN105641881B (en) * | 2015-12-31 | 2018-05-04 | 浙江曙光体育用品有限公司 | A kind of seamless table tennis manufacturing process |
| EP3487913A1 (en) | 2016-07-22 | 2019-05-29 | Eastman Chemical Company | Cellulose ester compositions for calendering |
| KR101939480B1 (en) * | 2017-07-21 | 2019-01-16 | 경상대학교산학협력단 | Method of manufacturing for pinpong racket using supercritical fluid process and method of manufacturing for pinpong racket rubber |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3617589A (en) * | 1964-10-14 | 1971-11-02 | James Jones Hinton | Method for manufacturing table-tennis balls |
| JPS5481936A (en) * | 1977-12-10 | 1979-06-29 | Dainippon Printing Co Ltd | Table tennis ball |
| CN1473702A (en) * | 2003-08-06 | 2004-02-11 | 上海红双喜江阴华士体育用品有限公司 | Cellutloid sheet material for producing ping-pong ball |
| CN102838782A (en) * | 2012-09-06 | 2012-12-26 | 无锡市科恩塑胶有限公司 | Celluloid substituted material for table tennis and manufacturing method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1024465A1 (en) * | 1981-09-02 | 1983-06-23 | Предприятие П/Я М-5143 | Composition for making table tennis balls |
| CN102050964B (en) * | 2010-12-13 | 2012-07-25 | 深圳职业技术学院 | Cellulose acetate transparent plastic |
-
2013
- 2013-04-19 CN CN201310139356.9A patent/CN103172911B/en active Active
- 2013-09-25 JP JP2015511905A patent/JP2015519444A/en active Pending
- 2013-09-25 WO PCT/CN2013/001134 patent/WO2014169409A1/en active Application Filing
- 2013-09-25 DE DE112013000189.6T patent/DE112013000189T5/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3617589A (en) * | 1964-10-14 | 1971-11-02 | James Jones Hinton | Method for manufacturing table-tennis balls |
| JPS5481936A (en) * | 1977-12-10 | 1979-06-29 | Dainippon Printing Co Ltd | Table tennis ball |
| CN1473702A (en) * | 2003-08-06 | 2004-02-11 | 上海红双喜江阴华士体育用品有限公司 | Cellutloid sheet material for producing ping-pong ball |
| CN102838782A (en) * | 2012-09-06 | 2012-12-26 | 无锡市科恩塑胶有限公司 | Celluloid substituted material for table tennis and manufacturing method |
Non-Patent Citations (2)
| Title |
|---|
| 于维萍等: "《常用中药词语词典》", 31 July 1998, article "乙酸纤维素", pages: 2 * |
| 李朝略等: "《化工小商品生产方法（第一集）》", 31 July 1992, article "醋酸乙酯", pages: 325 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015021138A1 (en) * | 2013-08-06 | 2015-02-12 | Celanese International Corporation | Cellulose acetate table tennis balls and processes for making |
| CN104592686A (en) * | 2015-02-02 | 2015-05-06 | 江南大学 | Polyvinyl chloride material for manufacturing ping-pong balls and preparation method thereof |
| CN104592686B (en) * | 2015-02-02 | 2016-08-24 | 江南大学 | For pvc material manufacturing table tennis and preparation method thereof |
| CN105001458A (en) * | 2015-08-19 | 2015-10-28 | 无锡市科恩塑胶有限公司 | Pingpong manufacturing material |
| CN105001458B (en) * | 2015-08-19 | 2017-10-03 | 无锡市科恩塑胶有限公司 | One kind makes table tennis material |
Also Published As
| Publication number | Publication date |
|---|---|
| DE112013000189T5 (en) | 2015-05-21 |
| JP2015519444A (en) | 2015-07-09 |
| WO2014169409A1 (en) | 2014-10-23 |
| CN103172911B (en) | 2016-05-04 |
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Effective date of registration: 20191204 Address after: Room 1,020, Nanxun Science and Technology Pioneering Park, No. 666 Chaoyang Road, Nanxun District, Huzhou City, Zhejiang Province, 313000 Patentee after: Huzhou You Yan Intellectual Property Service Co., Ltd. Address before: 214171 Jiangsu province Wuxi Yanqiao Huishan District of Huishan Economic Development Zone, supporting the district (District) industry West Road No. 9 Patentee before: Wuxi Cohen Plastic Co., Ltd. |
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