Cold Foil for Letterpress Label Lines / 凸印标签线冷烫要关注哪些参数
## Quick Answer Cold Foil for Letterpress Label Lines should be specified by process route, substrate, adhesive or UV varnish compatibility, artwork detail, and finished-package durability. For letterpress label converters, the safest buying path is to test the foil on paper and film label stock, using the actual machine route for premium self-adhesive labels. The main purchasing risk is adhesive transfer, pressure, and release balance. Do not approve a cold foil roll by color alone; approve it by transfer completeness, edge clarity, gloss, adhesion, rub resistance, and repeatability at prod…