Cold Foil Wrinkling and Foil Tension Control / 冷烫起皱和膜张力怎么控制
## Quick Answer Cold Foil Wrinkling and Foil Tension Control should be specified by process route, substrate, adhesive or UV varnish compatibility, artwork detail, and finished-package durability. For machine operators, the safest buying path is to test the foil on roll-fed foil and label webs, using the actual machine route for narrow-web labels and roll-to-roll embellishment. The main purchasing risk is unwind tension, rewind tension, nip pressure, and web path. Do not approve a cold foil roll by color alone; approve it by transfer completeness, edge clarity, gloss, adhesion, rub resistanc…