Is color fading a concern with flexo-printed corrugated packaging? | Keshenglong&Shinko Guide

2025-05-22

Is color fading an issue in flexo-printed corrugated packaging? Industry insights and solutions explained by Keshenglong&Shinko.

Is Color Fading a Concern with Flexo-Printed Corrugated Packaging?

Color fading in flexo-printed corrugated packaging is a key pain point for industry professionals striving for quality, brand integrity, and customer satisfaction. This article provides clear, factual guidance addressing whether flexo printing leads to color fading, factors that influence durability, and best practices for lasting results.

Is Color Fading a Concern with Flexo-Printed Corrugated Packaging?

Understanding Flexo Printing and Color Stability

- Flexographic printing is extensively used for corrugated packaging due to its efficiency, cost-effectiveness, and versatility (Smithers Pira, 2023).

- Color fading refers to the gradual loss of vibrancy on printed surfaces, impacting visual appeal and perceived quality.

- Concerns regarding fading often arise with products subjected to prolonged light exposure, moisture, or abrasion.

Key Factors Affecting Color Longevity

Ink Composition

- UV and water-based inks offer greater fade resistance compared to traditional solvent-based inks.

- Pigment-based inks (vs. dye-based) are less prone to fading and provide enhanced durability (Flexographic Technical Association, FTA).

Substrate Selection

- The choice of corrugated substrate (white vs. kraft) impacts ink absorption and color retention.

- Pre-treated or coated liners can extend color lifespan by minimizing ink penetration and wear.

Print Process and Curing

- Proper ink curing—especially with UV-curable systems—locks colorants in place, reducing susceptibility to fading.

- Consistent print settings ensure reliable ink application and uniform color density.

Environmental Exposure

- Direct sunlight (UV), humidity, and extreme temperatures accelerate color degradation.

- Warehousing and distribution conditions are critical; controlled environments mitigate fading risks.

Industry Best Practices for Maximizing Color Retention

- Use high-quality, fade-resistant inks aligned with end-use conditions.

- Educate clients on the influence of environmental factors and required packaging performance.

- Specify coating options (e.g., varnishes or laminates) to add a protective barrier.

- Perform routine quality control checks to monitor color stability across print runs.

Data and Standards

- FTA guidelines recommend regular lightfastness testing following ISO 105-B02.

- Studies show UV-protected packages can retain over 90% original color strength after 12 months in simulated sunlight (Smithers, 2022).

Conclusion: Can Flexo-Printed Corrugated Packaging Resist Color Fading?

- With proper material selection, advanced ink formulations, and optimal storage, flexo-printed corrugated packaging can deliver long-lasting color integrity.

- Ongoing innovation in ink chemistry and substrate coatings continues to minimize color fading as a concern for brand owners and converters.

References

- Flexographic Technical Association, Flexo Ink Properties and Durability, 2023.

- Smithers Pira, The Future of Digital Print for Packaging to 2028.

- ISO 105-B02, Textiles — Tests for colour fastness — Part B02: Colour fastness to artificial light: Xenon arc fading lamp test.

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