What are the components of the printing ink?
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1. Composition in printing ink
The printing ink is formed by mixing the sleeves with pigments and additives in the orange material. Pigment is a solid, colored material that is the main component of the ink. The pigments used in the ink can be divided into two major categories based on its source and chemical composition, inorganic inorganic materials and organic pigments.
Inorganic materials are rather colored metal oxides, or insoluble metal salts such as salvage, remediation, and roads, and are extremely powdery. It is divided into natural and artificial two. Natural and inorganic materials, also known as mineral pigments, are rocks that have been mined from mines and ground into powders that have been overwashed. In the past, Cao was widely used to make ink, but due to its own color, it was light.
Due to the defects of coarse grains and strong abrasiveness, the use of Fanpu has become increasingly narrow in the modern chemical industry. Although artificial inorganic pigments have vivid colors and a high degree of lightfastness, the inks used to make them have a strong cover and are not suitable for multicolor printing.
Organic a materials are also natural and artificial. Natural organic pigments are derived from animals or plants. Artificial organic materials are produced by organic synthesis. This is quite good for dry inorganic pigments that are greatly superior in terms of species depletion and brightness.
The speed of orange material varies depending on the purpose of use. According to its nature can be divided into oxidative polymerization dried orange material - for dry vegetable oil or synthetic resin refining.
For example, offset printing, lithographic printing, Chinese printing, and other printing are used to manufacture inks
Additives include Qi fillings, decontamination agents, desiccants and pigments.
1) Filler-filler has a dual role in reducing ink production cost and N-ink. For example, aluminum hydroxide, sulfuric acid group, aluminum group white, carbonic acid 05 and magnesium carbonate and other white substances, the appropriate amount of ink added, can improve some of the ink properties, does not affect the hue, to reduce the production cost.
2) Conditioner - A small amount of addenda to some of the properties of the ink is called an embellisher. After use, iE printing can be performed smoothly. For example, petrolatum, Shao soap, Kangbang, and pine acid and so on, can be 9 appropriate brake ink sticky Pan degree, fluidity, infiltration chain and exhibition brushing. Antioxidants such as anti-aging agent D and hydroquinone prevent the ink from being hardened when the ink is collected. Most of the inks are made by using only three ingredients, namely, orange, I and filler. However, some of them may inevitably add a small amount of lake decorating agents to improve the printing performance of the ink. For example, when manufacturing blue ink, Add the most suitable vaseline.
3) Desiccant—Oxidatively dried inks, with the addition of very small amounts of certain metal salts, can greatly increase their drying rate and have a drying effect. These metal salts are proud of dry agents. The main desiccant is rosin acid soap, oil acid soap, acid salt, borate, etc. Separately added to the ink, or added in an appropriate proportion
In addition, some ink AN does not need to be added at all.
4) Pigmentant - A agent added to the ink as the ink hue. Such as ultramarine and blue light and other pigments can be added to the black ink to adjust the hue of black ink and increase the darkness.