How should the definition and classification of printing ink industry

Should be how to carry on the definition and classification of printing ink industry should be how to carry on the definition and classification of printing ink industry

the definition of ink: is an important material used for printing, it will by printing design, performance on the substrates. Ink and auxiliary components, including of the main ingredients in them evenly mixed and after repeated rolling and become a jelly-like fluid viscosity. By the link ( Resin) , pigments, fillers, additives and solvents, etc. Used in books, packaging decoration, construction decoration and electronic circuit board, etc. Various kinds of printing. Along with the social demand, ink varieties and production was expanded and growth. Classification:


ink plate type classification. Modern ink according to the version are divided into four categories:
1. Letterpress printing ink. In letterpress printing books and periodicals, newspapers, books, documents, books and other type of ink. Is the main characteristic of letterpress printing layout details the bulge on the lis part. Letterpress printing ink types according to the press and printing products use and letterpress printing ink, copperplate printing ink, letterpress rotary printing ink, flexible letterpress printing ink.
　　2. Lithographic printing ink. Applicable to a class of printing ink. Lithographic parts basically at a plane, layout of the motifs in oil-wet, hydrophilic, the grain by using the principle of oil and water repellent for printing, so the lithographic printing ink water resistance is a must. According to the process is divided into offset printing ink, for web offset printing ink, offset printing ink, waterless offset printing ink, printing ink, lithographic printing ink, collotype printing ink.
intaglio printing ink 3. Gravure printing ink. Apply a class of gravure printing ink. Recessed in the layout on the part of the grain when printing ink, wipe away or will not show the part of the ink scrape, and printing. Carved intaglio ink, and according to
4. Mesh printing inks. Through the mesh plate printing of printing ink to the printing surface. Mesh printing inks, is divided into copying ink and silk screen printing ink.
according to the classification of solvents:
ink link according to the use of materials with different properties. Mainly include the resin type printing ink, solvent ink, water-based ink and UV curing ink. Using organic solvent as ink connecting material, will have a negative impact on the environment. To make the ink conforms to the requirements of environmental protection, links to using environmentally friendly materials as ink material. Environmental protection inks are water-based ink, UV ink, water-based UV ink and some alcohol soluble ink.
　　1. Water-based ink. Water-based ink and solvent-based inks biggest difference lies in its use of solvent is water instead of organic solvent, significantly reduce the VOC emissions, can prevent the air pollution, does not affect human body health, not easy combustion, the ink stability, colourful, anti-corrosion materials, simple operation, low price, good adhesion force after printing, strong water resistance, quick drying, so it is especially applicable to food, beverage, medicine and other packaging printing, is the world recognized environmental protection printing material, and all the only approved by the us food and drug association in printing ink printing ink.
　　2. The uv curing ink. Uv-curable ( UV） Ink is refers to under ultraviolet light, ultraviolet light from different wavelengths and energy to make ink film and drying of printing ink. Using different ultraviolet spectrum, can produce different energy, monomer polymerization in the different ink link material into polymers, so the UV printing ink color film with good mechanical and chemical properties. The main advantage of the UV printing ink: ( 1) Don't use solvent; （ 2) Fast drying speed, less energy consumption; （ 3) Bright, colorful; （ 4) Water resistance, solvent resistance, wear-resisting performance is good. UV printing ink light initiator is a vulnerable to light excitation compound, after absorbing light excitation into free radicals, energy transfer to the photosensitive molecules or light crosslinking agent, the light in the UV ink curing reaction. Ink UV ink has become a more mature technology, its pollutant discharge is almost zero. In addition to do not contain solvent, UV ink and such as is not easy to paste version, points clear, inky bright light, excellent chemical resistance, consumption province, etc.
　　3. Water-based UV ink. Research in the field of water-borne UV ink is UV ink a new direction. Common the prepolymer in the UV ink viscosity are usually very big, need to join the reactive diluent dilution. Use the thinner and acrylic ester compounds with different degrees of skin irritation and toxicity, so in the development of low viscosity of prepolymer and low toxicity of active diluent at the same time, another development direction is the study of water-borne UV ink, such as water and ethanol as diluent. Water-borne UV ink has been successfully developed, and in some printing application.
in addition, the main role in flexo alcohol soluble ink is also a kind of pollution little ink, mainly used in food, medicine, beverages, alcohol, tobacco, and contact with the body of commodity packaging and printing, etc. Conversion table packaging printing knowledge