Cold Foil on PP Film Labels: Surface Treatment Risks / PP 膜标签冷烫为什么要看表面处理
## Quick Answer Cold Foil on PP Film Labels: Surface Treatment Risks should be specified by process route, substrate, adhesive or UV varnish compatibility, artwork detail, and finished-package durability. For film label printers, the safest buying path is to test the foil on corona-treated or plasma-treated PP film, using the actual machine route for cosmetic labels and food labels. The main purchasing risk is surface energy aging, adhesion, and scuffing. Do not approve a cold foil roll by color alone; approve it by transfer completeness, edge clarity, gloss, adhesion, rub resistance, and re…