Variable electrostatic spray coating apparatus and method

Details Variable electrostatic spray coating apparatus and method Variable electrostatic spray coating apparatus and method

B - Operations, Transporting

05

D

B05D 1/04 (2006.01) B05B 5/025 (2006.01) B05B 5/14 (2006.01) B05C 1/08 (2006.01) B05D 1/28 (2006.01) B05D 1/40 (2006.01) B05D 1/42 (2006.01) D21H 23/50 (2006.01)

Patent

CA 2444791

A liquid coating is formed by spraying drops of liquid onto a substrate or a transfer surface from an electrostatic spray head that produces a mist of drops and a wet coating in response to an electrostatic field. During spraying, the electrostatic field is repeatedly altered to change the pattern deposited by the drops. The wet coating can be contacted with two or more pick- and-place devices that improve the uniformity of the coating.

L'invention concerne un revêtement liquide formé par pulvérisation de gouttes de liquide sur un substrat ou une surface de transfert, ces gouttes provenant d'une tête de pulvérisation électrostatique qui produit une brume de gouttes et un revêtement humide, en réponse à un champ électrostatique. Au cours de la pulvérisation, le champ électrostatique est modifié de manière répétée pour changer le motif déposé par les gouttes. On peut mettre le revêtement humide en contact avec au moins deux dispositifs de transfert qui améliorent l'uniformité du revêtement.

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