烫金为什么会掉金？常见原因与解决方法
## Why does this question matter? A foil that transfers successfully is not automatically a foil that will remain stable through packaging production and distribution. Paper boxes may be die-cut, folded, packed, transported, displayed and touched by end users. Soft-touch paper, soft-touch film and textured specialty paper can present different surface energy, coating structure and roughness from standard coated paper, so colour and gloss alone are not enough to judge compatibility. A professional sourcing decision should answer three separate questions: can the foil transfer completely, c…