Celluloid substituted material for table tennis and manufacturing method

A manufacturing method and table tennis technology, applied in the field of table tennis manufacturing, can solve problems such as environmental hazards of small boilers, difficulties in production, storage, transportation and use, and failure to find them, so as to reduce the number of products in progress, save working capital, and maintain update easy effect

Inactive Publication Date: 2012-12-26
WU XI COHEN PLASTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] 1. Celluloid is a highly flammable substance, which brings extremely serious difficulties to production, storage, transportation and use
[0009] 2. The manufacturing process of celluloid needs to use a lot of solvents, which will bring harm to the environment
[0010] 3. The manufacturing process of celluloid needs steam, and the production enterprise must be equipped with small boilers, and the harm of small boilers to the environment cannot be ignored
[0017] In the specific production process of the above-mentioned disclosed patented technology, either the performance of the table tennis ball is difficult to reach the standard or the production efficiency cannot be compared with the existing technology. Ball technology can replace celluloid as a new material for making table tennis balls. This material must be very close to celluloid in terms of mechanical properties to ensure the sports characteristics of table tennis balls, and must also meet the requirements of existing table tennis technology equipment in terms of processing performance. To ensure that the manufacturing process can be carried out quickly and efficiently

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A table tennis material instead of celluloid, its main material (by weight) includes: cellulose acetate: 72 parts, dimethyl phthalate (DMP): 17 parts, diethyl phthalate (DEP ): 8 parts, silsesquioxane (POSS) nanomaterials: 2 parts, titanium dioxide: 1 part.

[0041] A kind of manufacture method of the table tennis material that replaces celluloid, it comprises the following steps:

[0042] Step 1: Raw material cellulose acetate: 72 parts, dimethyl phthalate (DMP): 17 parts, diethyl phthalate (DEP): 8 parts, silsesquioxane (POSS) nanomaterial : 2 parts, titanium dioxide: 1 part, add to a high-speed mixer and stir for 20 minutes.

[0043] Step 2: Add the material to a twin-screw extruder to extrude into sheets, and adjust the thickness with a three-roll calender. The screw temperature: the front section is 180°C, and the rear section is 190°C.

[0044] Step 3: After traction and cooling, cut into sheets of a certain length and thickness.

Embodiment 2

[0046] A table tennis material instead of celluloid, the main material (by weight) includes: cellulose acetate: 72 parts, diethyl phthalate (DEP): 25 parts, calcium titanate whiskers: 5 parts, Titanium dioxide: 1 part.

[0047] A kind of manufacture method of the table tennis material that replaces celluloid, it comprises the following steps:

[0048] Step 1: Add 72 parts of cellulose acetate, 25 parts of diethyl phthalate (DEP), 5 parts of calcium titanate whisker, and 1 part of titanium dioxide into a high-speed mixer and stir for 20 minutes.

[0049] Step 2: Add the material to a twin-screw extruder to extrude into sheets, and adjust the thickness with a three-roll calender. The screw temperature: the front section is 180°C, and the rear section is 190°C.

[0050] Step 3: After traction and cooling, cut into sheets of a certain length and thickness.

Embodiment 3

[0052] A table tennis material instead of celluloid, the main material (by weight) includes: cellulose acetate: 72 parts, triethyl citrate (TEC): 20 parts, triacetin (GT): 5 parts, Calcium titanate whiskers: 5 parts, titanium dioxide: 1 part.

[0053] A kind of manufacture method of the table tennis material that replaces celluloid, it comprises the following steps:

[0054] Step 1: Raw material cellulose acetate: 72 parts, triethyl citrate (TEC): 20 parts, triacetin (GT): 5 parts, calcium titanate whiskers: 5 parts, titanium dioxide: 1 part, Add to a high speed mixer and mix for 20 minutes.

[0055] Step 2: Add the material to a twin-screw extruder to extrude into sheets, and adjust the thickness with a three-roll calender. The screw temperature: the front section is 180°C, and the rear section is 190°C.

[0056] Step 3: After traction and cooling, cut into sheets of a certain length and thickness.

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Abstract

The invention discloses a celluloid substituted material for table tennis and a manufacturing method. The material is very close to the celluloid in mechanical and processing properties and can be used for producing table tennis instead of celluloid. The main component of the material is cellulose acetate, and the auxiliary materials are a plasticizer, a reinforced material and pigment. The manufacturing method of the material is as follows: the raw materials are subject to high speed mixing and then extruded into pieces by a double screw extruder and a hanger-shaped handpiece, the thickness is adjusted by a three-roller calendar, and the pieces are subject to cooling and drawing treatments and then cut into sheets according with certain length and width production requirements of table tennis. The celluloid substituted material for table tennis is safe and environmental-friendly and is very close to the celluloid in mechanical and processing properties; and meanwhile the manufacturing method uses standard general equipment, so the maintenance and replacement of the equipment are very easy, and the manufacturing process can be ensured to efficiently perform at a high speed.

Description

technical field [0001] The invention belongs to the technical field of table tennis manufacturing, and in particular relates to a table tennis material capable of replacing celluloid and a manufacturing method. Background technique [0002] In the early 1930s, celluloid was used as a material for making table tennis balls, and it has been used to this day. This is because celluloid has the following three very special properties. [0003] 1) Celluloid has high hardness and elastic modulus at room temperature, and the table tennis ball made of celluloid does not produce permanent deformation when it collides with the table at a speed of up to 150Km / h. [0004] 2) The elongation rate is >60% at a temperature of ≤100°C, so that water can be used as a heat medium for compression molding. [0005] 3) Solvent can be used to bond the two hemispheres into a whole ball within ten seconds, and the fastness of the seam is not lower than that of the main body. [0006] Among the ex...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L1/16C08K13/02C08K5/12C08K5/5415C08K3/22C08K13/04C08K7/08C08K5/11C08K5/103C08K5/07
Inventor 徐步青徐明学张松兵
Owner WU XI COHEN PLASTIC
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