English to Polish Tech/Engineering Paper / Paper Manufacturing

Od razu zaznaczam, że to firma z Finlandii i pisza pidgeon Englishem ;) Traktuje o tekturze powlekanej metodą ekstruzji przeznaczonej do pakowania żywności.
Nie za bardzo wiem, o co może chodzic z tym "hot fill" - napełnianie na gorąco? Bo potem jeszcze o podgrzewaniu piszą :/

This extrusion coated board is suitable for use under the following conditions of temperature and time. Please also see storage conditions.
 Freezer/fridge (-20°C to 5°C more than 24 hrs)
 Room temperature (up to 40°C for more than 24 hrs)
With aqueous, acidic and fatty foodstuffs also
 Hot-fill (heating up to 70°C for up to 2h or heating up to 100°C for up to 15min)
 Microwave oven *
 Conventional oven (max. 220°C and 30 min)
* It is the responsibility of the packer of the finished packages