Erasable white board ink and manufacturing method thereof

Abstract

The invention provides erasable white board ink and a manufacturing method thereof. The ink comprises the following components in percent by weight: 1-10% of pigment, 1-10% of film forming resin, 0.5-10% of wetting dispersing agent, 0.2-5% of wet storage agent, 0.2-1% of emulsifying agent, 0.5-5% of surface active agent, 2-30% of film forming additive, 0.2-5% of flatting agent and 50-90% of solvent. The manufacturing method for the erasable white board ink comprises the following manufacturing steps of: firstly dispersing and mixing the pigment, the film forming resin, the storage agent, the emulsifying agent, the wetting dispersing agent and an appropriate solvent at high speed, and then treating the components by using a high voltage collider and a high speed sand mill to obtain color paste; and adding the surface active agent and the film forming additive to the color paste, and diluting the color paste by using the solvent to obtain the final ink. The ink provided by the invention has the advantages of good stability in long term storage process, quick-drying, real-time erasability, erasibility of the ink remained on a white board for long term, long moisture preserving time and fine particles.

Description

technical field [0001] The invention relates to an ink, in particular to an erasable whiteboard ink and a manufacturing method thereof. Background technique [0002] With the progress of science and technology and the development of social culture, people pay more and more attention to health and environment. The traditional chalk teaching has caused the dust problem to plague teachers and students for many years. Whiteboard pen ink is a new type of environmentally friendly writing ink, which is used to write on the surface of non-absorbent materials. It can be widely used in metal baking varnish boards, alloy boards, enamel boards, glass boards, polyester boards, etc. It is environmentally friendly, pollution-free, and more colorful. bright. For erasability on writing tablets, erasable inks use pigments, rather than dyes, as colorants. [0003] The particle size of the pigment used in the industry is very large. If it is not treated, the writing will not be smooth, and t...

AI Technical Summary

Problems solved by technology

[0003] The particle size of the pigment used in the industry is very large. If it is not treated, the writing will not be smooth, and the pigment particles will sink quickly in the ink, which will not only cause difficulties for the pen manufacturer when filling the ink, but also block the writing pen. Cotton core and nib, the pen made will soon be unable to continue to use, affecting the service life

And if the pigment particles are too small, the particles will be agglomerated, which will also cause the instability of the ink, and problems such as stratification and precipitation will occur during storage.

[0004] The main problems of the existing whiteboard pen ink are: (1) the stability is not high, a large amount of precipitation occurs after the ink is stored for several months, and the writing becomes light after the finished pen is stored for several months, the color of the pen tip is uneven and the writing (2) The moisturizing time is short, and the finished pen will not write smoothly within one or two hours after taking off the cap; (3) The immediate erasability is not good, and it cannot be wiped off after 30 seconds of writing, or it takes a long time. It can only be wiped off vigorously, or obvious "ghost images" will appear after wiping off; (4) The erasability of the reserved board is not good, and it is difficult to wipe off after three or four days of writing

These problems have seriously affected the use experience of end consumers, which is not conducive to the promotion of this "environmentally friendly dust-free teaching pen"

[0005] In summary, the art lacks a kind of erasable whiteboard ink with high stability, long moisturizing time, instant erasability and good erasability of the board and its manufacturing method

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