(1) Have common sense in pigments. For example, know which pigments are not suitable for printing on napkins, such as rose red, methyl violet, basic blue, red C precipitated pigments, etc., because these pigments will affect the ink after contact with certain compounds (such as water and ethanol, etc.) resistance.
(2) There are two types of inks for napkin printing enterprises, one is finished ink, and the other is concentrated ink. Finished inks can only be printed on a limited number of substrates, and concentrated inks can be printed on a variety of substrates, but some additives are required. Concentrated inks are easy to use and can be used on a variety of printing presses and anilox rolls, which is important because different models are often used for a batch.
(3) In order to avoid the problem of poor resistance after napkin printing, it is necessary to know what substances the napkin will come into contact with during the terminal application process. It must be considered that the printing ink for napkins must have high alkali resistance, and at the same time, it must be resistant to milk. Resistant to substances such as , water and ethanol. The detection method developed by the enterprise should be repeatable to eliminate the influence of the operator's subjective factors on the detection results.
(4) Taking into account the safety of napkins in contact with skin and eyes during use, it is also necessary to be familiar with some terms, such as occasional food contact, indirect food contact and direct food contact, and correctly select the ink that has passed the direct food contact certification. When printers fully consider the above factors, they will limit the choice of ink colors for napkin printing, especially many bright colors cannot be reproduced on napkins, and these limitations also increase the cost of ink.
Contact Person: Mr. Marco