| 摘要 |
Disclosed is a method of printing a date stamp on food packaging using edible ink. The method is advantageous in that, since the date stamp is printed between bottom and top films using the edible ink approved by the FDA through an inkjet process, and heat energy is applied using a seal bar to rapidly dry the ink printed on the bottom film, the date stamp is not erased by external factors during distribution, consumers are not harmed even if chemical components of the edible ink are transferred onto content of the foodstuffs, and it can be applied to a typical packaging process, thus additional cost is not required.
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