Cellutloid sheet material for producing ping-pong ball

A technology of celluloid sheets and table tennis balls, which is applied in the field of making celluloid sheets for table tennis, and can solve problems such as unstable center of gravity, poor toughness, and low strength of table tennis balls

Inactive Publication Date: 2004-02-11
江阴华士道勃尔体育用品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

International Huangsai Tablets use titanium dioxide as a filler, and the table tennis balls made of it have disadvantag

Method used

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  • Cellutloid sheet material for producing ping-pong ball
  • Cellutloid sheet material for producing ping-pong ball

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Get nitrocellulose 550kg, alcohol 120kg and acetone 67.5kg, zinc oxide powder 10kg, camphor powder 250kg, ethyl acetate 2kg and pigment 0.5kg, its production process is as follows:

[0012] 1. Add a certain amount of grain industrial grade ethanol to nitrocellulose and stir evenly before dehydrating;

[0013] 2. Add synthetic acetone, ethanol, synthetic camphor powder, ethyl acetate, pigment, zinc oxide powder filler and color fixing agent in a quantitative ratio, put it into a 500L kneader, heat and knead for 90 minutes, and then discharge;

[0014] 3. The discharge temperature is controlled at 68±2°C, and the discharge is filtered with silk cloth and stainless steel mesh;

[0015] 4. After filtering, put it into the rubber mixer, heat and calender for 2.5 hours, control the temperature of the block material at 68±2°C, and control the alcohol content at 15-16%;

[0016] 5. Use a 200-ton press to press 200kg for 5 hours, and block the material for 72 hours;

[0017] 6...

Embodiment 2

[0020] Get nitrocellulose 700kg, alcohol 70kg and acetone 23kg, zinc oxide powder 50kg, camphor powder 150kg, ethyl acetate 5kg and pigment 2kg, its production process is as follows:

[0021] 1. Add a certain amount of grain industrial grade ethanol to nitrocellulose and stir evenly before dehydrating;

[0022] 2. Add synthetic acetone, ethanol, synthetic camphor powder, ethyl acetate, pigment, zinc oxide powder filler and color fixing agent in a quantitative ratio, put it into a 500L kneader, heat and knead for 60 minutes, and then discharge;

[0023] 3. The discharge temperature is controlled at 68±2°C, and the discharge is filtered with silk cloth and stainless steel mesh;

[0024] 4. After filtering, put it into the rubber mixer, heat and calender for 2.5 hours, control the temperature of the block material at 68±2°C, and control the alcohol content at 15-16%;

[0025] 5. Use a 200-ton press to press 150kg for 6 hours, and block the material for 96 hours;

[0026] 6. The...

Embodiment 3

[0029] Get nitrocellulose 600kg, alcohol 110kg and acetone 61kg, zinc oxide powder 25kg, camphor powder 200kg, ethyl acetate 3kg and pigment 1kg, its production process is as follows:

[0030] 1. Add a certain amount of grain industrial grade ethanol to nitrocellulose and stir evenly before dehydrating;

[0031] 2. Add synthetic acetone, ethanol, synthetic camphor powder, ethyl acetate, pigment, zinc oxide powder filler and color fixing agent in a quantitative ratio, put it into a 500L kneader, heat and knead for 120 minutes, and then discharge;

[0032] 3. The discharge temperature is controlled at 68±2°C, and the discharge is filtered with silk cloth and stainless steel mesh;

[0033] 4. Put it into the rubber mixing machine after filtering, heat and calender for 2 hours, control the cutting temperature of the block at 68±2°C, and control the alcohol content at 15-16%;

[0034] 5. Use a 200-ton press to press 250kg for 4 hours, and block the material for 48 hours;

[0035]...

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Abstract

The celluloid sheet is produced with dewatered nitrified cellulose as main material and through adding acetone and alcohol as solvent, zinc oxide as stuffing, camphor as plasticizer, ethyl acetate astoughener, pigment and other assistant, heating and kneading, filtering, mixing, rolling, shaving, stoving, drying and flattening. Replacing traditional titania white powder with zinc oxide powder as stuffing makes the table tennis produced with the sheet possess high strength, high toughness, stable gravity center, high elasticity and good table tennis feeling.

Description

Technical field: [0001] The present invention relates to a celluloid sheet material. In particular, it relates to a celluloid sheet for making table tennis balls. Background technique: [0002] Celluloid sheet is a material from which table tennis balls are made. Each table tennis manufacturer all adopts the international yellow match sheet as the material of making table tennis at present. International Huangsai tablets use titanium dioxide as a filler, and the table tennis balls made with it have disadvantages such as low strength, poor toughness, unstable center of gravity, poor elasticity, and players report poor ball feel. Invention content: [0003] The object of the present invention is to overcome above-mentioned deficiency, provide a kind of celluloid sheet material that strength is high, toughness is good, center of gravity is stable, elasticity is sufficient, and player reflects ball feel good to make table tennis. [0004] The object of the present invention...

Claims

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Application Information

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IPC IPC(8): B29C69/00C08J5/18C08L1/18
Inventor 赵永林
Owner 江阴华士道勃尔体育用品有限公司
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