Testing Requirements
2.1 Basic Requirements
Food contact paints and coatings should comply with the provisions of GB 4806.1
2.2 Coating Sensory Requirements
|
Item |
Requirements |
|
Sens |
Planarizing surface, normal color and luster, no pores, no cracks, bubbles, or detachment after soaking |
|
Soak solution |
No deterioration with turbidity, sedimentation and foreign odor in the soak solution obtained in the migration test |
2.3 Physical and Chemical Indicators
|
Item |
Requirements |
|
Overall Migration |
≤10mg/dm2 |
|
Potassium permanganate consumption |
≤10mg/kg |
|
Heavy metals (as lead) |
≤1mg/kg |
2.4 The specific migration limit, specific total migration limit, maximum residue and other physical and chemical indicators of monomers and other starting materials shall comply with the provisions of Appendix A and relevant announcements.