Top kraft, also known as kraft liner, is a linerboard produced primarily from virgin fibers and used as the outer facing of corrugated board where higher strength and surface quality are required.

Compared to recycled liner grades, top kraft offers higher burst strength, improved compression performance, and a more uniform surface. These characteristics make it suitable for applications where box strength, stacking performance, or print quality are critical.

Manufactured for consistent thickness and mechanical performance, top kraft is designed to run efficiently on corrugating machines and converting lines. Its surface properties support higher-quality printing and branding while maintaining structural integrity throughout handling and transport.

Top kraft is commonly used in demanding packaging applications, including export packaging and products requiring enhanced appearance or strength.