Ideal for small and lightweight packaging
Case Hershey’s

MetsäBoard Natural WKL Bright

MetsäBoard Natural WKL Bright is a fully bleached, uncoated white kraftliner suitable for flexo, offset and digital printing and available in a basis weight range of 70-160 g/m².

Ideal for small and lightweight corrugated packaging, MetsäBoard Natural WKL Bright has a high whiteness appropriate for applications where cleanliness and purity are important. It is safe for food packaging, provides superb print contrast, and its uncoated surface gives an attractive matt look and tactile feel.

MetsäBoard Natural WKL Bright opens up many new possibilities for an uncoated kraftliner, and can be used for microflute, as a top or reverse-side liner, and also as fluting.

MetsäBoard Natural WKL Bright is made from fresh fibres, traceable to source in sustainably managed northern forests. All of Metsä Board’s products are manufactured under the highest environmental and safety standards, and hold PEFC™ (02-31-92) and FSC® (C001580) chain of custody certification.



  • shelf-ready and retail ready packaging
  • displays
  • food and beverages
  • fast food applications
  • beautycare
  • consumer electronics
  • bags

Product specifications

Specification language
Product nameMetsäBoard Natural WKL Bright
Product descriptionFully bleached uncoated white kraftliner, also as fluting
Product typeWhite kraftliners
End useRetail and consumer packaging, Point-of-sales materials, Foods, Fast food applications, Beverages, Bags, Beautycare, Consumer electronics, Consumer durables, General packaging
Printing methodFlexo, Offset, Digital inkjet printing
Food contactEU Regulation (EC) No 1935/2004, USFDA21CFR§176.170*, USFDA21CFR§176.180*
MillMetsä Board Husum
Paper profileMetsäBoard Natural WKL Bright (pdf)
*Please contact Metsä Board for details of country-specific restrictions and/or limitations.
Open specification PDF


Technical informationSelect unit :
Grammage g/m² 708090100110120130160
Moisture content %
Thickness μm 90100115125140150165205
SCT cd kN/m
Smoothness top ml/min 200200200240240240300370
Brightness top % 8686868686868686
CIE Whiteness  103103103103103103103103
Water absorption top g/m² 2828282828282828
Porosity s 6060606060606060

White kraftliners range

  • MetsäBoard Classic WKL

  • MetsäBoard Natural WKL

  • MetsäBoard Prime WKL

  • MetsäBoard Pro WKL

  • White kraftliners