This part of the standard covers the terms and definitions, classification, principle, test items and inspection methods of the cooking resistance performance of Liquid ink. The scope of application includes the inspection of the cooking resistance performance of Liquid ink. The standard refers to a series of normative documents, including the disbonding test method of plastic materials and the inspection method of inks viscosity and adhesion fastness. The definition of color penetration is given in the terms and definitions part. The classification includes boiling grade, semi-high temperature cooking grade and high temperature cooking grade. The principle is to test the color, disbonding force, adhesion fastness and other indicators of the sample bag under the specified time, pressure and temperature. Test items include disbonding, color difference, color penetration and Appearance.