About CUK


Made of long pine fibers, CUK is exceptionally durable.

Handles Moisture

Wet strength can be added to CUK for even stronger packaging.

A Natural Look

The unbleached surface of CUK is ideal for brands that want an earthy, organic feel.


Trees used to make CUK are a renewable resource and grown at dedicated farms.


Zumbiel healthcare packaging box
zumbiel frozen food packaging
  • A Versatile Paperboard

    CUK’s strength, printability, and surface options make it convertible into a wide range of packaging products across categories.

  • Best Used for

    CUK is widely used for beverages as well as food, private label, and pet care packaging. It’s also strong enough to support a handle for multipacks and other packaging.