Dryer for paper machine

D - Textiles – Paper – 21 – F

Patent

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Details

D21F 5/04 (2006.01)

Patent

CA 2212842

An improved two-tier, single-felted dryer section has an upper tier of spaced apart dryer drums and a lower tier of spaced apart dryer drums. The section includes at least one dryer drum group consisting of a first and second adjacent drum in one tier, a third drum in the other tier located between the adjacent first and second drums, and two reversing rolls positioned one on each of the opposite sides of the third drum. A felt-supported paper web follows a serpentine path about the dryer drums and reversing rolls. As a result, the felt-supported web passes through the dryer drum group with the web in direct contact with each of the three dryer drums in the dryer drum group.

Section de séchage améliorée, à un feutre et à deux niveaux. Elle présente un niveau supérieur et un niveau inférieur de cylindres de séchage non accolés. Cette section comporte : au moins un groupe de cylindres de séchage constitué d'un premier et d'un deuxième cylindres, contigus l'un de l'autre sur un niveau; un troisième cylindre sur l'autre niveau situé entre les deux premiers cylindres adjacents; et deux rouleaux de renversement disposés de part et d'autre du troisième cylindre. Une bande continue de papier sur feutre suit un parcours en serpentin autour des cylindres de séchage et des rouleaux de renversement. La bande continue sur feutre traverse ainsi ce groupe de cylindres de séchage en entrant directement en contact avec chacun des trois cylindres de séchage.

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