Foam packaging printing process

By foam printing is meant a method of printing by screen printing onto paper or swaddle material using microfoamed ink and then heating to form raised relief-shaped text or braille readings.

Since the foamed printing image can be raised, the microsphere foaming ink is used. This type of ink is made of a high molecular polymer monomer and has a diameter of 5m to 80m and is internally filled with a hollow boiling point solvent. Plastic spheres, when the microspheres are heated, the low-boiling solvent in the sphere is heated and gasified, and the diameter of the microspheres is rapidly increased to 5 to 30 times of the original sphere, so that the surface of the substrate forms a relief-like graphic.

Microsphere foam printing is widely used in new braille printing technology systems. The braille printing system is different from the original braille printing method. This method uses a computer. The printed dots are printed with foamed ink and heated to make the braille convex. Therefore, it is possible not only to quickly print in large quantities, but also to print on both sides of the paper, and to print a pattern.