Aluminum-plastic film bubble-free gravure coating device and coating technology thereof

Abstract

The invention discloses an aluminum-plastic film bubble-free gravure coating device. The device comprises a material box. A dandy roll and a gravure roll are arranged on the upper portion of the material box from top to bottom in sequence. A first fixing block is arranged on one side of the gravure roll. A second fixing block is arranged on the other side of the gravure roll, and the first fixingblock and the second fixing block are arranged symmetrically. The top of the first fixing block is provided with a first scraper used for scraping off excessive slurry in mesh holes of the surface ofthe gravure roll. The top of the second fixing block is provided with a second scraper used for filling the mesh holes of the surface of the gravure roll with slurry. The mesh holes of the surface ofthe gravure roll sequentially pass through the material box, the first scraper, the dandy roll and the second scraper in sequence while rotating. According to the aluminum-plastic film bubble-free gravure coating device, by arranging the second scraper and the flowing slurry on the scraper, the mesh holes in the gravure roll can be filled with the slurry before the gravure roll enters below the slurry liquid level inside the material box, the problem that bubbles are mixed into the slurry is effectively solved, the transfer coating slurry feeding amount is uniform, and no missing coating occurs.

Description

technical field [0001] The invention relates to a gravure coating device, in particular to an aluminum-plastic film bubble-free gravure coating device and a coating process thereof, belonging to the technical field of aluminum-plastic film gravure coating. Background technique [0002] After the aluminum-plastic film is pressed against the gravure roller and the rubber roller, the slurry on the gravure roller is transferred to the film. When the gravure roller enters the liquid surface of the material box, the air in the upper hole of the outer wall of the gravure roller is brought into the slurry. Air mixes with the slurry, making the slurry in the material box turbid and forming air bubbles in the slurry, which makes the amount of glue applied in the transfer coating uneven, resulting in missing coating. Contents of the invention [0003] The technical problem to be solved by the present invention is to overcome the defects of the prior art, provide an aluminum-plastic f...

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Problems solved by technology

[0002] After the aluminum-plastic film is pressed against the gravure roller and the rubber roller, the slurry on the gravure roller is transferred to the film. When the gravure roller enters the liquid surface of the material box, the air in the upper hole of the outer wall of the gravure roller is brought into the slurry. The air mixes with the slurry, which will cause the slurry in the material box to be turbid and form air bubbles in the slurry, which will make the amount of glue applied in the transfer coating uneven, resulting in missing coating

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