Product Definition & Core Features
Guangdong's Black Cardboard is a multi-layer composite board renowned for its deep, uniform black color, superior stiffness, and printing versatility. It is available in multiple variants to suit diverse needs:
Double-Sided Through-Black Cardboard: Engineered with consistent black coloration across both sides and the core, ideal for premium packaging and decorative applications.
Single-Sided Through-Black Cardboard: Features a deep black front and slightly lighter back, suitable for cost-effective packaging solutions.
Full Wood Pulp Black Cardboard: Manufactured with 100% virgin wood pulp, offering exceptional recyclability and durability.
Grey-Bottom Black Cardboard: Combines a black top layer with a grey base, commonly used for structural components in packaging.
Key Technical Parameters:
Basis Weight: 80–700 g/m² (single-layer) or customizable via lamination for higher grammages.
Stiffness: Transverse stiffness ≥55 mN·m, ensuring dimensional stability during forming and long-term use.
Surface Smoothness: Bekk smoothness ≥800 seconds, supporting high-definition printing and foil stamping.
Blackness: Achieves ≥98% optical density, ensuring deep, uniform coloration without fading.
Environmental Compliance: FSC-certified (SAI-COC-002362), chlorine-free, and RoHS-compliant, meeting EU and FDA food-contact standards.
2. Manufacturing Excellence & Innovation
Guangdong's Black Cardboard production integrates advanced technology and sustainable practices:
Multi-Layer Composite Structure:
Top Layer: Bleached chemical wood pulp (LBKP + DMOW) for enhanced brightness and surface strength.
Core Layer: Recycled pulp blended with wood flour to optimize adhesion and reduce delamination.
Bottom Layer: De-inked recycled pulp for anti-curling properties and dimensional stability.
Place contact us
WhatsApp：(+86)18933510649
email：02@songhongpaper.com
website：https://www.grayboardpaper.com/
address：(Factory Building) Hengyu Road 4th, Sandong Digital Park, Huicheng District, Huizhou City, Guangdong Province
YouTube：https://www.youtube.com/@SonghongPaperCardboard