Study On Printability Of The Soybean Oil Offset Ink

Soybean oil ink uses soybean oil to replace petrolic solvent in traditional ink, which makes VOC (Volatile Organic Chemicals) content of ink reduces from 30%-60% to 15% and it is very benefit to reduce environment pollution and people health. So this project has a very good academic researching significance and application value.Because of the soybean oil belonging to the half-dry oil, some problems occur when soybean oil replaces petrolic solvent in traditional ink, such as dry difficulty, water-ink balance problem. This paper mainly studies on printability of the self-made soybean oil offset ink according to resin selection, vehicles component ,making process and ink component adjusting. In the result the satisfying self-made soybean oil ink is made. The main contents and result are as followings:1. Make the vehicle of the soybean oil offset printing ink, which has solved the dry difficulty problem of the soybean oil.2. Confirm four color process ink components of self-made soybean oil ink according to ink dry and printability experiments, which has solved the problems as lower dry speed,ect and has good characteristics of water-ink balance and printing stability.3. The self-made ink has no petrolic solvent. The VOC content is less than 2% and heavy metal content is less than 2mg/kg,which is far more lower than correlative stands. And soybean oil content exceeds 30%,which is up to the American soybean oil association standard.4. The physical and chemical indexes of self-made soybean oil offset ink such as organic solvent-resistance, acid-resistance, alkali-resistance, are measured and analyzed and the result shows it has superior parameters.