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OP509

Uncoated Unbleached Kraft (UUK)

Review Uncoated Unbleached Kraft Paperboard as a reference for your packaging brief. Confirm the material, dimensions, finish and intended use for the proposed specification.

Best Used With

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Details

Overview

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 Color Variance

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.