Basic knowledge and classification of ink

Today let us talk about ink,after your watch more other products information from about our websit, let us introduction about ink.

    Ink can be everywhere in our daily life, such as food packaging, Book printing, clothing printing, tobacco packaging printing, ink is indispensable everywhere. So today let us talk about the knowledge about ink

1. What is ink？

Theoretically speaking, ink refers to printing materials composed of pigments, binders, fillers, additional materials, etc., which exist in liquid forms of various colors and are transferred to the medium to be printed through various printing machines and equipment , Through different colors to express text, patterns, and even tactile effects.

2. Classification of ink

(1) According to printing method

①According to the format, it can be divided into: letterpress, lithography, intaglio, photo intaglio, screen printing ink, etc.;

②According to the printing method, it can be divided into: offset printing, direct printing and other inks.

(2) According to the printing material location

According to the printing material, it can be divided into: ink for paper, metal, plastic, cloth, etc.

(3) According to the dry form

①According to the drying mechanism, it can be divided into: penetration drying type, oxidative polymerization type, volatile drying type, light curing type, thermal curing type, cooling curing type and other inks;

②According to the drying method, it can be divided into: natural drying type, hot air drying type, infrared drying type, ultraviolet drying type, cooling drying type and so on.

(4) According to the characteristics of ink

①According to the color, it can be divided into: yellow, red, blue, white, black, gold, silver, gold powder, fluorescent color, pearlescent color and other colors;

②According to function, it can be divided into: magnetic ink, anti-counterfeiting ink, edible ink, foaming ink, aromatic ink, recording ink, etc.;

③According to the resistance, it can be divided into: light resistance, heat resistance, solvent resistance, abrasion resistance, alcohol resistance, chemical resistance and other inks.

(5) According to ink composition

①According to the raw materials, it can be divided into: dry oil type, resin oil type, organic solvent type, water type, paraffin type, glycol type and other inks;

②According to the form, it can be divided into: gel, liquid, powder ink, etc.

According to the purpose, it can be divided into: news ink, book ink, packaging ink, building material ink, trademark ink and so on.

3. How to use Water-based ink:

  ①Stir well before use to keep the ink composition uniform;

  ②After opening and using, the ink storage should be sealed and sealed immediately to prevent the dust from falling and the crust to dry;

  ③If the remaining ink contains impurities, it should be filtered first, and then used with new ink;

  ④ During the storage period, please avoid close to high temperature or scorching sun. Store under normal conditions for one year without deterioration;

⑤ If you find that the viscosity of the applied ink is slightly larger, you can add an appropriate amount of water for adjustment.

4. Tips for usage

   1. Can not mix water and solvent inks. In the process of use, add water appropriately, and when it is really necessary to adjust the viscosity or drying speed, add an appropriate amount of additives such as alcohols or esters.

   2. Stir well before use, then pour it into the ink tank, and adjust the viscosity with water before it can be used. The unused ones should be covered with packaging barrels to prevent the ink from evaporating in nature.

  3. Before use, you should check the various technical indicators, especially whether the hue meets your own requirements. If the hue deviation is large, please notify the ink and wash manufacturer to make appropriate adjustments, so as to avoid disputes between the parties due to the hue error.

4. In the printing process, due to the volatilization of water, the original viscosity and pH value of the ink will be affected. It is necessary to check the viscosity and pH value frequently, and pure tap water or pH stabilizer should be appropriately added when necessary.

Remarks: This article is reproduced from Baidu Encyclopedia.

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