Coil coating method

B - Operations – Transporting – 05 – D

Patent

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Details

B05D 7/00 (2006.01)

Patent

CA 2719713

The invention describes a process for coating metal bands, which comprises the following process steps: (1) appli-cation of an aqueous primer coating composition (B) comprising at least one crosslinkable binder system (BM), at least one filler component (BF), at least one corrosion protection component (BK) and volatile constituents (BL) to the optionally cleaned metal surface, where the coating composition (B) has a content of organic solvents of not more than 15% by weight, based on the volati-le constituents (BL) of the coating composition (B), (2) drying of the integrated pretreatment layer formed from the primer coating composition (B), (3) application of a topcoat layer (D) to the integrated pretreatment layer dried according to step (2) and (4) a joint curing of the layers of coating composition (B) and topcoat (D).

L'invention décrit un procédé permettant de revêtir des bandes de métal, comprenant les étapes de procédé suivantes: (1) application d'un agent de revêtement primaire aqueux (B), contenant au moins un système de liant réticulable (BM), au moins un composant de remplissage (BF), au moins un composant de protection contre la corrosion (BK) et des constituants volatils (BL), sur la surface métallique éventuellement nettoyée, l'agent de revêtement (B) présentant une teneur en solvants organiques d'au maximum 15% en poids par rapport aux constituants volatils (BL) de l'agent de revêtement (B); (2) Séchage de la couche de prétraitement intégrée formée à partir de l'agent de revêtement primaire (B); (3) Application d'une couche de vernis de finition (D) sur la couche de prétraitement intégrée séchée selon l'étape (2) et (4) durcissement conjoint des couches composées de l'agent de revêtement (B) et du vernis de finition (D).

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