| abstract |
Since plastic film, metallic foil, synthetic paper, non-woven fabric, and products made of these materials are not absorbent of water, ink printed onto the materials does not dry well. There is a corona treatment for these materials to improve the ink drying and adhesivity. But the effect of the corona treatment does not last for hours. n The invention purposes quick drying, prevention of sticky problem, scratching-proof, adhesivity of water based glue for the materials by means of coating agent to be coated onto the materials before printing with water based or water soluble printing, or before writing with water based ink pen, or before stamping with water based ink stamp. n Coating Agent containing starch or combined starch by 1 % to 20 % by weight that enables printing onto non water-absorbent materials such as plastic film, plastic molding products, metallic alminium foil, and so on with water based or water soluble printing ink, or writing with water based ink pen, or stamping with water based ink stamp. |