Kraft vs Test Paper in Double Wall Boxes: What Is the Difference?
Kraft or test liners in your double wall boxes: strength vs sustainability.
Key differences
Quick answer
Kraft liners for maximum strength. Test liners for sustainability and cost. In double wall construction, the strength difference is less critical than in single wall because the double fluting compensates. For loads up to 20-25kg, test liner double wall is adequate. For 25kg+ or demanding stacking, kraft liners provide extra margin. A common compromise is kraft outer liner (strength and print quality) with test inner liner (cost saving).
Strength comparison
Longer virgin fibres.
The extra fluting layer provides a strength buffer.
Strength where visible, savings where hidden.
Which to choose
Both liner types
Kraft and test double wall from ProcuraPack.
Browse double wall boxesFrequently asked questions
Kraft, by 15-25%.
For loads up to 20-25kg in double wall, yes.
Kraft outer liner for strength/printing, test inner for cost savings.
Test, using recycled fibre.
Kraft has a smoother, cleaner surface.
Part of our guide
Product Guide: Double Wall Cardboard Boxes
Expert guides on double wall cardboard boxes for heavy-duty shipping and industrial packaging.
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