Preconditioned paperboard containers and method and apparatus for making the same

摘要: Containers and a method for forming such containers having larger brims with reduced brim curl defects is disclosed including providing plurality of container blanks containers, shells from the blanks, accumulating at an accumulation station, subjecting least upper periphery to humid atmosphere precondition preferably steam, successively removing accumulator subsequently about shell being subject predetermined time period sufficient form defect-free curls by extending strain limits paperboard material. This carried out using further processing. Alternatively, can be retained in hopper leaving portion blank formed into exposed.