The Application and Principle of Corona Treatment on Base Paper

Introduction

In the evolving world of paper packaging and printing, surface treatment technology plays a critical role in enhancing performance and process compatibility. Among them, corona treatment has become an essential step for improving the surface energy of base paper, enabling better adhesion during printing, coating, and lamination. At China Paper, we are committed to advancing our corona-treated paper solutions to meet modern packaging demands.

What is Corona Treatment?

Corona treatment is a high-frequency electrical discharge process applied to the surface of base paper. It increases surface energy by oxidizing the outermost molecular layer, thus improving wettability and adhesion properties. The effectiveness of corona treatment is often measured in dyne levels—a higher value indicates a better ink or coating receptivity.

Benefits of Corona Treatment for Base Paper

Improved Ink Adhesion: Treated base paper absorbs ink more evenly, resulting in sharper image quality and enhanced print durability.

Stronger Lamination Bonds: Whether used with PE, PP films, or water-based coatings, corona treatment ensures stronger adhesion.

Uniform Coating Application: The surface modification ensures even coating spread, reducing defects and enhancing barrier properties.

Versatility: Suitable for a wide range of paper types and grammages used across industries.

Key Applications of Corona-Treated Paper

China Paper supplies corona-treated base paper for multiple packaging and industrial sectors:

Food packaging: cupstock paper, liquid packaging board, wet strength paper

Labels & release liners: improved anchorage for adhesives

Art paper & carbonless paper: optimized for high-speed color printing

Industrial grades: kraft liner, coated kraft back, and laminated boards

All corona-treated grades are tailored to customer-specific dyne levels for superior performance in downstream applications.

Why Choose China Paper for Corona-Treated Base Paper?

At China Paper, we integrate corona treatment as part of our value-added surface engineering process:

Precision-controlled discharge ensures high surface energy without damaging fiber structure

Consistent dyne levels (typically 38–42 dynes) for excellent ink and coating compatibility

Available in both roll and sheet forms to meet different processing needs

Certified under ISO 9001, ISO 14001, FSC, FDA, and RoHS standards

Ideal for high-speed offset, flexo, or digital printing environments

Conclusion

Corona treatment significantly expands the functionality and value of base paper by improving surface properties for complex printing and converting needs. As sustainability and performance requirements grow, China Paper remains a reliable partner in providing high-quality, corona-treated paper products.

Contact us today to request samples, technical datasheets, or tailored solutions to elevate your packaging and printing performance with advanced corona-treated base paper.