How can I remotely verify sealing quality when buying a packaging machine overseas?
• Require PLC/HMI heat-seal curve: temp ±2°C, pressure 0.2-0.4MPa, dwell 0.5-2s.
• Witness peel and burst tests by video; seal strength ≥15N/15mm, no channel leak.
• Check heat-seal jaw parallelism and film tension variation ≤5% to avoid wrinkles.
• Obtain FAT report with sealing parameters, sample photos and third-party test data.
• Contract on-site re-verification; reject non-conforming per CE/FDA standards.
• Witness peel and burst tests by video; seal strength ≥15N/15mm, no channel leak.
• Check heat-seal jaw parallelism and film tension variation ≤5% to avoid wrinkles.
• Obtain FAT report with sealing parameters, sample photos and third-party test data.
• Contract on-site re-verification; reject non-conforming per CE/FDA standards.