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Clay Natural Kraft (CNK)

Made from recycled material, CNK paper features a matte, clay coated front side and a brown kraft back side. The clay coating offers more dimensional stability making it a durable option for packaging food, retail and personal care products.

  • Made from recycled material
  • Moisture and tear-resistant
  • Features a matte printing surface


Clay Natural Kraft (CNK) paper is made using at least 80% virgin unbleached wood pulp, making it an eco-friendly packaging material. Clay coated on the top side and uncoated on the back side, the coated top surface is a matte finish and offers superior printing capabilities for artwork designs, logos and text. Ideal for cold chain packaging, this material is tear, moisture and dust resistant making it popular for packaging frozen food, beverages, pharmaceuticals and personal care products.

Cardboard Thickness

kraft paper weight chart

Paperboard Thickness and Grammage Conversion Table

Basestock Properties (Units) Nominal Basis Weight (GSM) Caliper (Inches) Thickness (Microns) Commonly Used For
12pt 250gsm 0.012” 305μ Bags
14pt 275gsm 0.014” 356μ Takeout Boxes, Cups
16pt 300gsm 0.016” 406μ Heavy duty bags, Takeout Box
18pt 350gsm 0.018” 456μ All box packaging
24pt 400gsm 0.024” 610μ Heavy duty boxes
28pt 527gsm 0.028” 710μ Very heavy duty boxes