Can I put cardboard in the oven at 170?

Chef's answer
Cardboard doesn't catch fire until temperatures reach over 400 degrees. But to be safe, we recommend you keep your heat at the suggested setting of 170. If you want to crank it up a bit more, that's fine. ... The heat within the box will still keep it warm..
Frequently asked Questions 🎓
In general, you can use the microwave-safe cardboard for heating in the microwave. If the cardboard is pure fiber or cellulose material, then there should be very little concern about hazards. If the cardboard is coated with waterproof lining such as wax or plastic, then it is not recommended to heat in the microwave.
While their are many claims of doing so, it is not safe to put cardboard in the oven. Cardboard is combustible, so it can potentially catch fire when heated to high temperatures for extended periods of time. ... However, it's not going to catch fire as quickly as putting a piece of cardboard on an open flame.
The cover covers the waveguide.
As long as you exercise proper caution by ensuring your container is not empty and does not contain any metal or plastic, microwaving cardboard is a quick and easy way to reheat food..
Slows Down Cooking Time Leaving your pizza with cardboard on the bottom or other food can slow down the cooking time. It also keeps the bottom of your pizza from getting nice and crispy.
Slows Down Cooking Time Leaving your pizza with cardboard on the bottom or other food can slow down the cooking time. It also keeps the bottom of your pizza from getting nice and crispy.
Cardboard doesn't catch fire until temperatures reach over 400 degrees. But to be safe, we recommend you keep your heat at the suggested setting of 170. If you want to crank it up a bit more, that's fine. ... The heat within the box will still keep it warm..
A few more cooking questions 📍