How are designs printed on cardboard? | Keshenglong&Shinko Guide

How are Designs Printed on Cardboard?

This article addresses common questions regarding printing designs onto cardboard, focusing on flexographic printing techniques relevant to professionals in the industry. We'll cover essential aspects of the process, from plate making to printing parameters, to help optimize your production workflow.

Plate Making for Cardboard Printing

* Plate Material Selection: Choosing the right photopolymer plate is crucial. Consider durability, flexibility (for intricate designs), and the compatibility with your printing press and inks. Higher durometer plates offer better durability for corrugated cardboard.

* Plate Imaging: Digital plate making offers precision and efficiency. Laser ablation techniques ensure sharp, consistent images for optimal print quality.

* Plate Mounting: Accurate and secure mounting is vital for consistent register and avoiding print defects. Appropriate adhesives and mounting techniques ensure longevity.

Ink Selection and Application

* Water-Based Inks: Environmentally friendly and suitable for food packaging applications, these inks require specific drying systems.

* UV Curable Inks: Offer fast curing times and vibrant colors, ideal for high-speed production lines. They require UV curing units.

* Anilox Roll Selection: The anilox roll's cell volume and pattern directly influence ink transfer and print density. Choosing the right anilox is key for consistent print quality across the entire run.

Press Setup and Optimization

* Substrate Handling: Proper feeding and tension control are paramount to prevent jams and maintain consistent print quality.

* Register Adjustment: Accurate register is essential for aligning multiple colors. Regular checks and adjustments are necessary, especially during long print runs.

* Print Pressure and Speed: Optimizing these factors is crucial for balance between speed and print quality. Too much pressure can lead to damage, and too little can result in poor ink transfer.

Troubleshooting Common Issues

* Slurring: This often indicates issues with ink viscosity, anilox roll wear, or excessive pressure.

* Color Variations: Inconsistencies may stem from ink variations, improper register, or worn printing plates.

* Print Defects: These can be caused by issues with the substrate, press setup, or problems during plate preparation.

Cardboard Types and Considerations

* Corrugated Cardboard: Requires higher print pressure and more robust plates.

* Solid Board: Offers smoother surface for finer details, using different ink transfer techniques and plate selections.

* Folding Cartons: Often require precise register and high-quality printing to maintain packaging integrity.

This information is for educational purposes. Specific requirements vary based on equipment and applications. Consult your equipment manuals and industry best practices for detailed guidance.