Paper can be coated to introduce or enhance properties such as surface gloss, ink absorbency and water resistance. High-precision monitoring can ensure uniform coating across a smooth surface.
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Extrusion coating involves molten synthetic resin being used to cover a moving paper web. Monitoring ensures a smooth, uniform coating and detects any hot resin damage to the paper.
Folding machines are used for making paper products, for example envelopes, and also as part of printing processes. Surface creases and other imperfections can be formed, and so monitoring is important.
Pulp is squeezed through a series of rollers to remove water, then pressed and rolled further for a smooth finish, Surface inspection helps to ensure consistent paper quality.
Mass printing for newsprint and magazines is a high-speed rolling process that depends upon smooth, defect-free surfaces to ensure a legible product. This requires a fast, automated inspection solution.
Paper sheeters cut the paper roll to size for further use. Automated inspection can check for imperfections before the final product is used or packaged for dispatch to customers.
Once the master roll is unwound and slit, it is then rewound onto smaller cores of the desired size. Monitoring can verify surface condition and ensure web integrity.
Winders convert machine-width paper rolls into finished roll sets for converting or shipping. Paper from a parent reel is rewound onto a core and slit or trimmed as required.
Automated wrapping increases production speeds, but requires a monitoring solution that operates in real-time. Surface defects can impair packaging integrity and result in a damaged or unappealing final product.
Winder slitters are used to cut large-diameter paper rolls into trimmed roll widths which meet customer requirements. This can be a hazardous area for manual surface inspection, so an automated solution is recommended.
High-pressure rollers are often used to provide a smooth finish to the paper, or apply a coating if required. Surface monitoring assures the finished quality of the product.