Method and device for continuously coating a metal strip...

B - Operations – Transporting – 05 – D

Patent

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B05D 1/26 (2006.01) B05D 3/02 (2006.01)

Patent

CA 2346561

The invention concerns a method comprising steps which consist in: continuously unwinding said strip on a heated dead roll (1'') with a non-deformable metal surface; applying the polymer composition (P) on one of the surfaces (Be) of the strip supported on said roll; before, during and after application, heating the strip by contacting the other face (Bi) with said roll (1''). The invention also concerns an associated device for one-surface or two-surface coating. When the application is carried out between two rolls, the other roll (2'') has a deformable surface. The invention provides better adherence for the coating.

Procède comprenant les étapes consistant à: mettre la bande en défilement continu sur un rouleau d'appui (1") chauffé à surface métallique non déformable; appliquer la composition polymère P sur l'une des faces Be de la bande en appui sur ce rouleau; avant, pendant et après application, chauffer la bande par contact de l'autre face Bi avec ce rouleau (1''). Dispositif associé pour revêtement mono- ou bi-face. Dans le cas de l'application entre deux rouleaux, l'autre rouleau (2'') présente une surface déformable. Avantage: meilleure adhérence du revêtement.

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