1460653668-4a34541c-7ccc-4879-a1e3-68acb6e5f023

A method of producing paper or cardboard using a bleached cellulosic pulp, which contains hemicelluloses. The integrated circuit device 14 has a plurality of unit circuit regions 14b separated from each other. The film is fed in a controlled way, making it adhere to a grooved corrugating drum by an air jet to corrugate cross corrugations in the film while it is being wound up; the corrugations of the film traps air and prevents the implosion of the roll.