The curing temperature and time of solvent-less lamination are determined by the adhesive supplier according to its product (brand) and application. These regulations are based on the premise of the safety guarantee of the final product. The general two-component adhesive instruction manual stipulates that the curing temperature is between 35 ~ 45℃, and the production curing time is more than 48 hours. In fact, the complete curing time of the two-component adhesive is 7 ~ 10 days.
In practice, the user often selects the curing temperature and time based on the lamination structure and use, as well as the method of post-processing (e.g., relaminating, slitting or preformed bag) and the delivery method of packaging (e.g., rolling material or preformed bags). According to the experience of domestic users, some users choose the following way: if the following process is re-lamination, the curing time is 12 ~ 24 hours; if the following process is slitting, curing time is 24 ~ 48 hours; If the next process is bag-making, the curing time should be more than 48 hours.
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