Coating method and device
AssigneeBüHler Alzenau GmbH
InventorMichael Mücke
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Abstract
The invention relates to a method and a device for coating a strip-type, flexible, dielectric substrate with a metal layer on a coating roll over which the substrate is guided in the longitudinal direction of the substrate during the coating process. In order to improve the adhesion of the substrate on the coating roll during the coating process, the substrate is charged. The substrate is coated with a first metal layer, wherein, in the longitudinal direction of the substrate, at least one free strip remains which is not coated with the metal layer, and the coated substrate is provided with a second metal layer.
Claims9
A method for coating a strip-type, flexible, dielectric substrate with a metal layer on a coating roll over which the substrate is guided in the longitudinal direction (L) of the substrate during the coating process, comprising the steps of:
- (a) charging the substrate to improve adhesion of the substrate on the coating roll during the coating process,
- (b) coating the substrate with a first metal layer,
- wherein, in the longitudinal direction (L) of the substrate, at least one free strip remains which is not coated with the metal layer,
- (c) coating the coated substrate with a second metal layer,
- wherein the method has a step for re-charging the substrate at least before one of the steps for coating the substrate with the second metal layer or a further metal layer,
- wherein, during coating of the coated substrate in step (c) an air pocket is formed between the coating roll and the portions of the substrate coated in step (b) to support cooling of the substrate, wherein a gaseous medium is introduced in these portions to increase the cooling effect of the air pocket.
Dependencies are inferred from the claim text.