High-adsorption dustproof renewable chalkboard eraser and preparation and application methods

A high-adsorption, chalk-erase technology, used in office supplies, printing, cleaning devices for blackboards or slates, etc., can solve the problems of teacher's hand ink pollution and high cost, and achieve reuse, reduce release, and reduce waste generation. Effect

Inactive Publication Date: 2020-05-29
齐皓宇
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But this method also has the problem of high cost and contamination of the teacher's hands with ink

Method used

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  • High-adsorption dustproof renewable chalkboard eraser and preparation and application methods
  • High-adsorption dustproof renewable chalkboard eraser and preparation and application methods
  • High-adsorption dustproof renewable chalkboard eraser and preparation and application methods

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Experimental program
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Effect test

Embodiment Construction

[0033] The present invention will now be further described in conjunction with the embodiments and accompanying drawings:

[0034] The size of this embodiment is the size of the existing blackboard eraser. The cavity structure of the chassis contains 5 grooves. The size of the cylinder in the groove is close to the size of the existing chalk, about 10 cm long and about 1 cm in diameter. The upper half of the cylinder is a sealed slide rail structure 10; one end of the cylindrical structure is provided with a plug, and the other end is a piston structure; the fiber mat 9 is a plurality of strip structures, which are incompatible with the cylindrical sealed slide rail structure 10. The opening part is installed in a wrong position.

[0035] The chassis of the hollow tube cavity can be injection molded with plastics such as PE and PP (bio-based composite materials are also available), and the cavity half can be opened and closed. Open when collecting dust and close when die cast...

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Abstract

The invention relates to a high-adsorption dustproof renewable chalkboard eraser, preparation and application. A complex of MOF and the like with the strong adsorption function and natural fibers areused as an adsorption material, and the adsorption material is replaceable fibrofelt with the functions of adsorption and friction. Due to the special surface performance, dust can be firstly adsorbedand then slides down into empty pipe mold cavities. A piston head with the pressing function is designed, when the powder quantity is large, simple pressing is carried out after a small quantity of adhesive is added dropwise, the piston head is pushed out, and new chalk is formed to be recycled. The chalkboard eraser has the function of adsorbing and enriching dust, meanwhile, dust can be reusedto prepare new chalk, and the aim of dust reutilization is achieved. Moreover, the fibrofelt of the chalkboard eraser is replaceable, the aim that the main body of the chalkboard eraser is used for along time can be achieved, the waste generation quantity is further reduced, and great significance is achieved in environment protection and social sustainable development.

Description

technical field [0001] The invention belongs to the design of novel stationery, and relates to a high-adsorption dust-proof regenerable chalk eraser and a preparation and use method thereof. Background technique [0002] Chalk eraser is a commonly used tool in school teaching. Because chalk has the characteristics of smooth writing and low price, it is currently used in a large amount. However, the large amount of dust generated by chalk wiping the blackboard has brought great harm to the classroom environment, especially in recent years, with the aggravation of air pollution, the dust in the air and the dust of chalk have brought great harm to the health of teachers and classmates , there is an urgent need to develop new technologies to solve this problem. Some researchers have proposed to bond the chalk with water-based adhesives, so that the large particles fall off during use to reduce the problem of dust pollution, but such chalk has poor writing effect. Another solut...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B43L21/04B29C65/56B43L21/00
CPCB29C65/56B43L21/00B43L21/04
Inventor 齐皓宇
Owner 齐皓宇
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