Patent ID: 6886454
Filing Date: 2005-05-03
Classification: D21G

Abstract:
1. A calender arrangement forming part of a papermaking machine comprising: a paper web traveling through the calender arrangement, the traveling of the paper web defining a machine direction; a first calendering unit, in the papermaking machine, the first calendering unit having a first long-nip formed using a calender based on shoe press technology or roll/belt technology, the first long-nip being formed between a rigid-shell metal roll and either a glide shoe pressing a resilient shell or a roll/belt structure; and a second calendering unit spaced apart in the machine direction from the first calendering unit, the second calendering unit having at least one on-line calender nip formed between a resilient-surface roll and a metal roll, wherein the paper web is under greater pressure in the second calendering unit nip than in the first long-nip, and wherein the paper web after the second calendering unit nip has a Hunter gloss % above 40.