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Stationery eraser and preparation method thereof

An eraser and stationery technology, applied in the field of stationery eraser and its preparation, can solve the problems of easy to scratch paper, hard eraser, high manufacturing cost of eraser, and achieve high self-lubricating property, soft texture and good erasing effect

Inactive Publication Date: 2019-03-29
QINGHUA SCI & EDUCATION EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some rubbers are relatively hard, and it is easy to scratch the paper when using them, and the erasing effect is not good; some rubbers are made of hydrocarbons, which pollute the environment; and some rubbers are expensive to manufacture

Method used

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  • Stationery eraser and preparation method thereof
  • Stationery eraser and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0020] The composition of the rubber is 40 parts of EVA, 16 parts of calcium carbonate, 10 parts of DOP, 2 parts of low-density polyethylene, and 2 parts of naphthenic oil.

Embodiment 2

[0022] The composition of the rubber is 50 parts of EVA, 16 parts of calcium carbonate, 20 parts of DOP, 5 parts of low-density polyethylene, and 2 parts of naphthenic oil.

Embodiment 3

[0024] The composition of the rubber is 50 parts of EVA, 16 parts of calcium carbonate, 20 parts of DOP, 5 parts of high-density polyethylene, and 2 parts of naphthenic oil.

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Abstract

The invention provides a stationery eraser and a preparation method thereof. The stationery eraser comprises the following components by weight: 40 to 45 parts of a thermoplastic elastomer, 12 to 16 parts of a functional inorganic filling material, 10 to 20 parts of a plasticizer, 1 to 3 parts of polyolefin resin and 1 to 5 parts of a softening agent. The stationery eraser provided by the invention has the advantages of soft texture, high self-lubricating properties, good erasing effect, safety, no pollution, etc.

Description

technical field [0001] The invention belongs to the field of polymer materials, and in particular relates to a stationery eraser and a preparation method thereof. Background technique [0002] Eraser is the most commonly used stationery. Because of its excellent word-erasing performance, it is widely used as an indispensable stationery for erasing handwriting. At present, there are many types of rubber on the market. In addition to the rubber based on rubber, more than 90% of the rubber is based on polyvinyl chloride (PVC) resin and supplemented by other materials. And extrusion molding and other processing methods in the system. Some rubbers are relatively hard, and it is easy to scratch the paper during use, and the erasing effect is not good; some rubbers are manufactured using hydrocarbons, which pollute the environment; and some rubbers are expensive to manufacture. In order to overcome the existing problems of the current rubber, the present invention develops a rubb...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08L75/04C08L23/06C08L23/12C08L23/14C08L91/00C08K3/26C08K5/12C08K3/36
CPCC08K2003/265C08L23/0853C08L75/04C08L2205/03C08L2207/062C08L2207/066C08L23/06C08L23/12C08L91/00C08K3/26C08K5/12C08L23/14C08L91/06C08K3/36
Inventor 叶青华
Owner QINGHUA SCI & EDUCATION EQUIP