Device and method for printing and drying plastic films
AssigneeRPC BEBO PRINT PATENT GmbH
InventorVolker ENGELMANN
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Abstract
A method and a device for printing and drying a plastic film web, especially a polypropylene (PP), polystyrene (PS), or polyethylene (PE) film web, employ several offset printing mechanisms for printing the film web with different ink applications and at least one flame drying station. The device also includes a drawing roller, which is arranged between a last printing mechanism and the at least one flame drying station, contacts the unprinted surface of the film web, and applies tension to the film web.
Claims18
A device for printing and drying a plastic film web, comprising a plurality of offset printing mechanisms for printing the film web with different ink applications, at least one flame drying station for flame drying the printed side of the film web, and a drawing roller arranged between a last printing mechanism and the at least one flame drying station,
- the drawing roller being configured to act on the unprinted surface of the film web and to apply tension to the film web, so that the web tension in the flame drying area is reduced compared with the web tension in the printing area.
A method for printing and drying a plastic film web, comprising printing the film web with different ink applications and then subjecting the film web to flame drying on the printed side,
- wherein tension is applied to the film web on its unprinted side after printing and before flame drying, so that the web tension in the flame drying area is reduced compared with the web tension in the printing area.
Dependencies are inferred from the claim text.