A new water based flexographic lamination ink for conventional and retort pouch packaging has been launched by Toyo Ink Mfg America. The AquaLiona ink prints on substrates ranging from BOPP, PET, PVDC coated films to nylon and is said to work well with a wide array of lamination adhesives, solvent and water based, and solvent-less types.
It can also be used for retort food packaging applications with the addition of a hardener that enhances resin durability. This enables AquaLiona to withstand temperatures up to 250degF, making it the world’s first water based flexo system to achieve this performance benchmark, according to Toyo.
Toyo says the new ink improves print resolvability and on-press stability and offers superior bonding strength, providing excellent transfer of inks from plates to films. ‘Moreover,’ the company adds, ‘its remarkably low solvent (alcohol/glycol) retention and ability to handle microwave reheating makes retort-stable AquaLiona ideal for dry, oily or wet food packaging applications where product purity is an absolute must.’
In addition to demonstrating superior performance under strict retort conditions, the new water based system is said to provide an excellent barrier to odour, particularly ammonia.
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