Indicator ink for the freshness of food and procedure for the production of an ink indicating the freshness of food (Machine-translation by Google Translate, not legally binding)

Indicator ink of the freshness of food and procedure for the manufacture of an ink indicating the freshness of food. It comprises between 90-98% of the total, a varnish, said varnish comprising between 5-25% of the total varnish of at least one film-forming resin or at least one vinyl resin or a mixture thereof, between 10-25 % on the amount of resin of a plasticizer additive and between 50-75% of the total solvent varnish, and between 2-10% of the total, some metal salts. (Machine-translation by Google Translate, not legally binding) Tinta indicadora de la frescura de alimentos y procedimiento para la fabricación de una tinta indicadora de la frescura de alimentos. Comprende entre un 90-98% del total, un barniz, comprendiendo dicho barniz, entre un 5-25% del total de barniz de al menos una resina filmógena o al menos una resina vinílica o una mezcla de ellas, entre un 10-25% sobre la cantidad de resina de un aditivo plastificante y entre un 50-75% del total de barniz de disolventes, y entre un 2-10% del total, unas sales metálicas.