Sealing system for improved applicator die

B - Operations – Transporting – 05 – C

Patent

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B05C 5/02 (2006.01) B65H 37/02 (2006.01) B05B 12/14 (2006.01)

Patent

CA 2259666

An improved applicator die (50) for alternately depositing different liquid coating materials on a moving web comprises a die body (52) having switch bars (80, 84) for opening and closing respective flow passageways (69, 70) for supplying the different liquid coating materials to an elongated coating orifice (68) from respective manifolds (72, 74). The switch bars (80, 84), flow passageways (69, 70) and manifolds (72, 74) are substantially as wide as and substantially parallel to the coating orifice of the die whereby changeover between different coating materials can be made very rapidly.

Filière d'applicateur améliorée (50) permettant le dépôt successif de différentes matières de revêtement liquide sur une bande en mouvement et comprenant les éléments suivants : un corps de filière (52) pourvu de barres de commutation (80, 84) permettant d'ouvrir et de fermer respectivement les passages d'écoulement (69, 70) destinés à acheminer les différentes matières de revêtement liquide émanant des collecteurs respectifs (72, 74) vers une buse allongée (68) de diffusion du revêtement. Les barres de commutation (80, 84), les passages d'écoulement (69, 70) et les collecteurs (72, 74) sont sensiblement de la même largeur que la buse de diffusion de la filière et lui sont sensiblement parallèles, permettant ainsi d'effectuer un changement très rapide des différentes matières de revêtement.

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