Patent ID: 8557085
Filing Date: 2013-10-15
Classification: D21F

Abstract:
1. In a papermaking machine, a dryer apparatus for drying a web, said dryer apparatus comprising: a drying cylinder which is rotatable about a rotational axis, said drying cylinder defining a peripheral surface for supporting and drying the web; an upstream roll cooperating with said peripheral surface of said drying cylinder, said upstream roll being rotatable about an axis of rotation, said axis of rotation being disposed spaced and parallel relative to said rotational axis of said drying cylinder; a looped felt extending around said upstream roll and guided by said upstream roll so that said looped felt and said peripheral surface of said drying cylinder define therebetween a nip for the passage therethrough of the web, said looped felt moving away from said heated peripheral surface of said drying cylinder downstream relative to said nip such that the web inherently follows and is supported by said peripheral surface of said drying cylinder downstream relative to said nip; a shoe press disposed downstream relative to said nip, said shoe press including: a shoe which cooperates with said peripheral surface of said drying cylinder downstream relative to said nip such that said shoe and said peripheral surface of said drying cylinder define therebetween an extended nip for the passage therethrough of the web supported and guided by said peripheral surface of said drying cylinder; and a looped press felt extending through said extended nip such that the web is disposed between said press felt and said peripheral surface of said drying cylinder during passage of the web through said extended nip.