You say Cardboard food packaging ... I say Cartonboard - Chapelton
Sweet Pea Parties Food Boxes
Amazon.com: Fit Meal Prep 48 oz Paper Take Out Containers 6.8 x 5.5 x 2.5 - Kraft Lunch Meal Food Boxes, Disposable to Go Packaging, Microwave Safe, Leak Grease Resistant for Restaurant,