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Printed tinplate tells: the requirements of tinplate printing for ink!

  • Categories:Industry News
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  • Time of issue:2021-08-19 11:28
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(Summary description)Since tinplate printed matter is to be made into food cans, toys, metal photo frames, and barrels and cans of chemical products, it needs to be cut, bent and stretched. Therefore, printing inks are required to have good adhesion to tinplate and corresponding machinery. performance. In order to improve the ink adhesion, the tinplate needs to be white painted before printing. White is the base color of all pictures, with high brightness. After adding other high-energy hues, the brightness of each hue can be increased to form a color gradation.

Printed tinplate tells: the requirements of tinplate printing for ink!

(Summary description)Since tinplate printed matter is to be made into food cans, toys, metal photo frames, and barrels and cans of chemical products, it needs to be cut, bent and stretched. Therefore, printing inks are required to have good adhesion to tinplate and corresponding machinery. performance. In order to improve the ink adhesion, the tinplate needs to be white painted before printing. White is the base color of all pictures, with high brightness. After adding other high-energy hues, the brightness of each hue can be increased to form a color gradation.

  • Categories:Industry News
  • Author:
  • Origin:
  • Time of issue:2021-08-19 11:28
  • Views:
Information

Do you know what tinplate printing requires for ink? Follow Printed tinplate editor to have a simple understanding!
1. The ink is required to have good adhesion and mechanical properties
Since tinplate printed matter is to be made into food cans, toys, metal photo frames, and barrels and cans of chemical products, it needs to be cut, bent and stretched. Therefore, printing inks are required to have good adhesion to tinplate and corresponding machinery. performance. In order to improve the ink adhesion, the tinplate needs to be white painted before printing. White is the base color of all pictures, with high brightness. After adding other high-energy hues, the brightness of each hue can be increased to form a color gradation.


2. Requirements for white ink
The surface of the tinplate is silvery white (or yellow) with metallic luster. Before printing the color graphics, the surface needs to be painted or printed white. Due to the limitation of the ink coverage, the monochrome machine often needs to be printed twice, and its whiteness Up to 75%. Whiteness is an important indicator of the quality of tinplate printing products. The white ink is required to have a good bonding force with the primer, and it will not yellow after repeated high-temperature baking, and will not fade after high-temperature steaming. Prime the tinplate to increase the adhesion to the tinplate and have a good adhesion to the white ink. Commonly used primers are epoxy amine-based, with light color, no yellowing, no aging after repeated baking, and good flexibility and impact resistance.
3. Requirements for color ink
In addition to a certain degree of water resistance, tinplate printing color inks also need special requirements. Since the surface of tinplate does not penetrate water and solvents, it needs to be baked and dried, so the ink should be heat curing type. High requirements for pigments' tinting strength and durability. In addition to the basic properties of general offset printing inks, iron printing inks should also have heat resistance, strong ink film adhesion, impact resistance, good hardness, cooking resistance and light resistance according to the characteristics of iron printing.
The above is the story of the editor of Printed tinplate: a brief introduction to the relevant knowledge of tinplate printing ink.

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