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grade comparison

FBB vs SBS

tl;dr

FBB is a multi-ply cartonboard with a bleached top layer and mechanical-pulp middle; SBS is bleached chemical pulp throughout all plies. SBS is whiter, stronger per gram, and more expensive. FBB is bulkier and cheaper at equivalent caliper. Both are food-contact approved in standard configurations.

Specs, side by side

SpecFBBSBS
Top plyBleached chemical pulpBleached chemical pulp
Middle plyMechanical (groundwood, TMP, BCTMP)Bleached chemical pulp
Back plyBleached white or brown kraftBleached chemical pulp
Typical grammage200 to 400 g/m²200 to 450 g/m²
Brightness ISO85 to 9588 to 98
Stiffness per gramHigher (bulky middle)Lower, but higher per mm caliper
Price premiumLower15 to 30% higher
Dominant regionEurope (Stora Enso, Metsä, Mayr-Melnhof)North America (Graphic Packaging, IP, WestRock)

When to pick FBB

Pick FBB when you need rigid cartons at the lowest premium cartonboard price, for cosmetics, pharma, confectionery, and frozen food packaging where print matters but top-tier whiteness isn't essential. FBB's bulky middle ply gives good stiffness per gram, which converts to box rigidity on the shelf.

When to pick SBS

Pick SBS when you need the whitest board surface for premium print, the highest purity for food-direct-contact applications, or when the brand spec calls for 'solid bleached' construction. SBS is the default in North American liquid packaging (milk, juice cartons) and premium US cosmetics.

The decision in one paragraph

In Europe, FBB is the default cartonboard and SBS is a premium upgrade. In North America, SBS is the default and FBB is the budget alternative. If your brand guidelines don't specify, FBB gives you 80% of the SBS performance at 75% of the cost.

Frequently asked questions

What does FBB stand for?

Folding boxboard. Sometimes called GC1 or GC2 in ISO 15755 classification, depending on back-ply whiteness.

What does SBS stand for?

Solid bleached sulfate. 'Solid' because all layers are bleached chemical pulp, 'sulfate' because the pulp is made by the kraft (sulfate) process.

Is SBS worth the premium?

For food direct-contact (yogurt cups, liquid cartons), yes. For cosmetic and pharma folding cartons where only the outer print surface matters, FBB is typically sufficient.

Can you print CMYK on FBB?

Yes. FBB's bleached top ply is designed for four-color offset and digital print. Print quality is high, just not quite SBS level.

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