A dryer section apparatus

D - Textiles – Paper – 21 – F

Patent

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Details

D21F 5/04 (2006.01)

Patent

CA 2182679

A dryer section apparatus (10) as disclosed for drying a web of paper (W). The apparatus (10) includes a plurality of dryer groups (12, 14, 16) disposed successively relative to one another, such that the web (W) is progressively dried during movement thereof through the dryer groups (12, 14,16). The plurality of groups (12, 14, 16) include a first single-tier group (12) for drying the first side (18) of the web (W), and a second two-tier group (14) disposed downstream relative to the first group (12). A second single-tier group (16) is disposed downstream relative to the two-tier group (14) for restraining the web (W) against cross-machine directional shrinkage.

L'invention concerne un dispositif de séchage (10) comportant plusieurs sections et servant à sécher une bande de papier (W). Ce dispositif (10) comprend une pluralité de groupes de séchage (12, 14, 16) situés les uns à la suite des autres, de manière à sécher progressivement la bande (W) pendant son déplacement à travers les groupes de séchage (12, 14, 16). La pluralité de groupes (12, 14, 16) comprend un premier groupe à un étage (12) servant à sécher le premier côté (18) de la bande (W) et un deuxième groupe à deux étages (14) situé en aval du premier groupe (12). Un deuxième groupe à un étage (16) est situé en aval du groupe à deux étages (14), de façon à empêcher le rétrécissement de la bande (W) dans le sens transversal du dispositif.

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