Patent ID: 6280574
Filing Date: 2001-08-28
Classification: D21G

Abstract:
An apparatus for finishing a web of paper to provide enhanced smoothness with minimal loss of caliper comprising: a calender device including at least two calender rolls arranged in nipped relation through which a paper web is passed, and at least one moisture application system associated with said calender adjacent to the nip between said calender rolls, said moisture application system consisting essentially of a moisture application means which is an array of tubes, spray nozzles, jets or slots, said moisture application means being structured and arranged to apply a film of liquid directly onto the surface of the paper web prior to the web entering the nip when the calender rolls are rotated, and a first metering device arranged to cooperate with the paper web to scrape off excess liquid and control the thickness and uniformity of the liquid film applied to the paper web before the web enters the calender nip; wherein said metering device comprises a metering element that is selected from the group consisting of a blade and a rod.