Ink Requirements for Printing Paper Napkins
Because napkins are closely related to people's lives and are involved in the service industry, the inks used are required to be safe, non-toxic, strong in adhesion and non-bleeding.

Napkin printing was originally printed with grease ink, which is characterized by good adaptability on the machine, but the smell of the printed matter is particularly strong. Some napkin printers using letterpress technology try to print napkins with glycol inks (washable) to eliminate the smell of the print. However, this process encounters some difficulties, such as ink smearing (the liquid spreads or penetrates in the paper) when the printed matter encounters ethylene glycol; in addition, the on-machine suitability of this ink is not ideal.

advantage

With the gradual progress of ink technology, napkin printing companies began to turn to more suitable flexographic printing water-based inks, and they felt the advantages of pigment-based inks over dye-based inks. In this context, flexographic printing technology has entered the stage of napkin printing, and its main advantages are as follows.

(1) Less odor, and good chemical resistance and abrasion resistance.

(2) The phenomenon of ink bleeding is reduced. After some napkins are stained with beverages, the ink on them will smear the white tablecloth or clothes, which will lead to complaints from consumers. Flexographic printing water-based inks contain resins and waxes that harden after drying, and pigments replace dyes to minimize ink bleeding.

(3) Environmental protection: Because waste inks (such as water-based inks, solvent-based inks) can recycle pigments, flexographic printing water-based inks are more environmentally friendly. Because no VOC is generated, flexographic printing water-based inks meet the requirements of reducing

Environmental requirements for VOC emissions.

(4) Improve the profit of the enterprise: It reduces the price pressure and ink inventory, which is very helpful to the operation of the enterprise.