Sheet-Fed Offset Cold Foil for Folding Cartons / 彩盒单张纸胶印冷烫怎么控制质量
## Quick Answer Sheet-Fed Offset Cold Foil for Folding Cartons should be specified by process route, substrate, adhesive or UV varnish compatibility, artwork detail, and finished-package durability. For folding carton printers, the safest buying path is to test the foil on coated paper, folding carton board, PE, PP, and PET, using the actual machine route for cosmetic, food, and gift cartons. The main purchasing risk is adhesive transfer, halftone metallic effects, and drying. Do not approve a cold foil roll by color alone; approve it by transfer completeness, edge clarity, gloss, adhesion,…