The color-printed paper box face sheets can lead to several issues, such as flowers sticking to the surface, dirt accumulation, and die-cutting problems. These challenges are among the most difficult to manage during the paper mounting process. In this "Packaging Zone" micro-edit, we'll explore a set of practical solutions to address these common problems effectively.
First, when using thin and curled color-printed face sheets, it's important to avoid running the machine at high speeds. Proper alignment of the tissue paper and corrugated board is crucial to prevent misalignment during the lamination process. If the stroke settings of the upper and lower chains aren't properly adjusted, it can result in front-to-back positioning errors. Additionally, if the paper stopper on the stacking table isn’t positioned close enough to the edge of the sheet, the stack may shift left or right. Also, if the curled cardboard isn’t handled carefully and not neatly arranged, it can contribute to improper placement of the face paper and corrugated board.
Second, incorrect adjustments or lack of maintenance on the paper feeding and positioning system can also cause misalignment between the face paper and corrugated board. For example:
- A loose paper feeding chain can lead to inconsistent or unstable coordination between the upper and lower chains.
- Loose front guides on the upper and lower chains may cause the paper edges to be hit or damaged during feeding.
- If the pressure steel strip doesn't make proper contact with the face paper or the gap is too large, it won't effectively reduce the inertial impact of the cardboard at high speed.
- Dirty upper and lower rollers that accumulate glue over time can hinder smooth rolling and transport of the face paper or corrugated board.
Third, improper roller gaps can also cause mounting errors. If the space between the upper and lower rollers isn't correctly set, the corrugated cardboard may shift as it passes through, causing misalignment between the face paper and the board.
Moreover, if the sheets aren’t fed smoothly and there are empty sheets or skewing, it can lead to blistering, degumming (due to uneven pressing), and overall poor mounting quality. Ensuring consistent and accurate paper feeding is essential for maintaining high-quality results throughout the production process.
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Huayao Master (Puyang) Automation Equipment Co., Ltd. , https://www.huayaomaster.com