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
Best Used With
Overview
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
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 |

Kraft paper can differ in shades of brown depending on the paper manufacturer and the amount of raw paper pulp to recycled paper pulp ratio. Kraft colors are identified using color IDs and can be color-matched based on samples.
Kraft Color Variance

Color on Kraft Paper
Kraft paper can alter the color output when printing, making them appear less vibrant and more muted in tone.

White Undercoat with Color
White ink can be used as a base with color applied on top to ensure colors appear more vibrant.

White Ink on Kraft Paper
Using white ink on kraft paper creates a textured contrast on the material due to its natural fibers.