Dustless board writing liquid and liniment for the same

A technology for writing liquid and dust board, which is applied in chemical paint/ink remover, ink, household utensils, etc. It can solve the problems of easy deposition of long-term pigments, high cost, and cumbersome production process, so as to achieve smooth writing and low cost , The effect of simple production process
CN1908088AInactive Publication Date: 2007-02-07SHANGHAI WUZHIFENG INFORMATION TECH
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
SHANGHAI WUZHIFENG INFORMATION TECH
Publication Date
2007-02-07
Estimated Expiration
Not applicable Β· inactive patent
Patent Text Reader

Abstract

The invention discloses a dustfree board writing liquid and erasing agent, wherein the writing liquid comprises the following parts: colorant, pH adjusting agent, surface activating agent, filming agent, antifreezing agent, antiseptic agent, defoamer and distilled water.
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Description

technical field

[0001] The invention relates to a writing ink, in particular to a dust-free board writing liquid and a wiper suitable for writing on a light-colored dust-free board. Background technique

[0002] "Blackboard chalk" is a representative of traditional teaching methods, and it is also the most widely used and oldest teaching method. However, chalk is written by friction, which is laborious to write, has friction sound, and is easy to break when writing. Especially in the process of writing and erasing, a large amount of dust will be generated, which seriously pollutes the teaching environment and endangers the health of teachers and students. There have also been "dust-free chalk", "dust-free chalk", "magnetic chalk" etc. for this reason, but their production technology and raw materials and writing methods do not completely overcome the disadvantages of chalk dust.

[0003] In order to fundamentally solve the problem of pen dust, there are many kinds of dust-f...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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