General test items and standards for ink adhesion

1. Normal adhesion test, refer to ASTM D3359-02 test standard, tape model: 3M-600 type tape or equivalent, continuous pull 3 times, 100% does not fall off

2. High temperature and high humidity (60℃, 95%RH), stored for 250h, the ink will not fall off without other changes;

3. Low temperature storage test, low temperature -30℃, storage for 250h, the ink does not fall off and no other changes;

4. High temperature storage, high temperature 70℃, storage for 250hrs, no ink falling off and no other changes;

5. Thermal shock test, low temperature -30℃ (30min), -30℃→RT (2min), RT→70℃ (2min), high temperature 70℃ (30min); 60min/cycle; 50cycles, no ink falling off Other changes;