Fremgangsmåde til reduktion af vådtrykfald i et begrænsningsåbningstörremedium og et begrænsningsåbningstörremedium fremstillet derved

摘要

An apparatus for drying a cellulosic fibrous structure. The apparatus comprises a micropore medium having pores therethrough. The pores are the limiting orifice in the air flow used in the drying process. The micropore medium has a relatively low pressure drop therethrough. This relatively low pressure drop advantageously reduces the energy costs used in drying, and/or allows for greater drying to be obtained at constant energy costs.