Issue 1: Uneven Shrinking or Wrinkles
● Cause: Improper heat distribution in the shrink tunnel or incorrect shrink film selection.
✅ Solution: Adjust the heat settings, optimize airflow, and use the correct film type based on shrink percentage requirements.
Issue 2: Film Peeling Off After Application
● Cause: Poor adhesive selection or excessive humidity during storage.
✅ Solution: Use a suitable adhesive and store the shrink films in a controlled environment to prevent moisture-related issues.
Issue 3: Ink Smudging or Poor Print Quality
● Cause: Incompatible printing inks or incorrect drying temperature.
✅ Solution: Choose high-quality printing inks compatible with PETG or PVC and optimize drying temperature settings.
Issue 4: Shrink Film Cracking or Brittleness
● Cause: Low-quality material or extreme cold storage conditions.
✅ Solution: Use high-grade PETG films for better flexibility and store materials at recommended temperatures.