GCM 240 Chapter Notes - Chapter 12: Overprint, Overprinting, Potato Chip

• School: Ryerson University
• Department: Graphic Communications
• Course: GCM 240
• Professor: Ian Baitz

Document Summary

End-use ink formulation requirements include good adhesion, colour strength, gloss, opacity, rub-resistance, dimensional stability, mottle-free lay, block resistance. Surface tension, coefficient of friction, heat resistance, solubility, solvent resistance, fade resistance, odor control, fda: flexible packaging (e. g. lifesaver bags) Laminated and retort pouches, candy wraps, merchandise, potato chip, frozen food, cheese wrap, bread bags. Flexographic inks for these applications must exhibit good adhesion, colour strength, sharp prints, heat resistance, boiling water resistance, and rub resistance. In packaging printing, gloss is also important in inks. Gloss achieved by overprinting ink with a clear overprint. Purpose of overprinting: adds physical properties to the flexible package, protects ink from external conditions, (cid:272)o(cid:374)trols fri(cid:272)tio(cid:374), (cid:271)uilds a prote(cid:272)tive (cid:271)arrier for the pa(cid:272)kage"s contents. Inks for packaging must also resist store lighting and outside light (light fastness) Personal care product packaging (e. g. shampoo labels) must be water a(cid:374)d (cid:373)oisture resista(cid:374)t a(cid:374)d resista(cid:374)t to the sha(cid:373)poo"s (cid:272)he(cid:373)i(cid:272)als.