Removable ink well-known technical formula

The ink can effectively cover up the printed and written words and patterns. After the ink is dried, the ink layer can be peeled off again to reproduce the original text and pattern. The original image and text are still clearly reproduced.
1. Features and Uses (1) The agent has strong hiding power, and it is impossible to see the covered text and patterns with the naked eye, that is, the confidentiality is strong.
(2) After the covering layer of this agent is removed, the original picture and the text are very clear. Will not affect the quality of the original image and text due to the cover layer.
(3) The cover layer is easy to peel off. Simply remove the corner of the cover layer and remove it completely.
This agent is mainly used for confidential documents, data, lotteries, etc. It is also used for games and entertainment.
2. Raw Materials (1) Ethylene-Vinyl Acetate Copolymer See the sixteenth (the main raw material of this agent. Use industrial products.) New type of writing cover liquid.
(2) Xylene See the fifth (9) multifunctional paint remover. This agent is used as a solvent. Use industrial products.
(3) Toluene See VI (VII) Nitrile rubber adhesive. This agent is used as a solvent. Use industrial products.
(4) Titanium dioxide See one of the < eleven) silty eye shadow blocks. This agent is used as a filler. Rutile titanium dioxide is used.
(5) Ferric oxide See the seventh (eighth) epoxy resin anti-corrosion coating. This agent is used as a colorant. Use industrial products.
(6) Aluminum powder See 7th (8) Epoxy resin anti-corrosion coating. This agent is used as filler and colorant. Use industrial products.
(7) Silica See (II) Removal of tartar toothpaste. This agent is used as a filler. Colloidal silica is used.
3. Formulations are shown in Table 16-2.
Table 16-2 Available Ink Formula (kg)
┌───────────────────────────────────┐
│ content\ formula number │ │ │
│ │ Formula One │ Formula Two │
│Materials - │ │ │
├───────────────────────────────────┤
│ Ethylene-vinyl acetate copolymer (45%) │ 2.0 │ │
│ │ │ │
│ Ethylene-vinyl acetate copolymer (40%) │ │ │ 1.2 │
│Xylene │ 18 │ │
│ toluene │ │ 20.8 │
│ TiO 2 │ 7.2 │ 14.0 │
│iron oxide │ 8.0 │ 9 │
│Aluminum powder │ 4.0 │ 4.0 │
│Silica (colloidal) │ 0.8 │ │
└───────────────────────────────────┘
4. Preparation and use methods Formulation preparation. The ethylene-vinyl acetate copolymer (45%) was dissolved in xylene solvent, stirred and mixed and then added titanium dioxide powder, ferric oxide, aluminum powder and colloidal blue; silicon, grinding with a ball mill 8 lOh can be out material.
Formula two preparation. The ethylene-vinyl acetate copolymer (40%) was dissolved in a toluene solvent, mixed with titanium dioxide powder and aluminum powder after stirring, and ground with a ball mill for 8 to 20 hours.
In use, the agent is screen printed (or gravure printing) and the print is overlaid on the preprinted offset text. After the solvent is volatilized naturally, it forms a blanket.

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