What are kraft paper block bottom bags?
Block bottom bags in kraft paper combine the classic block bottom construction (a rectangular, upright base) with an outer layer of natural brown kraft paper film instead of conventional plastic laminate film. This achieves two effects at once: a visibly sustainable brand presence with high tactile value, and packaging that in most cases is recyclable via the waste paper bin (provided no heavy PE inner coating has been used).
Not all kraft paper is the same: there is natural brown, bleached white, waxed and coated kraft paper in various weights. For packaging applications, natron kraft papers of 60–80 g/m² are mostly used, offering high strength at a moderate wall thickness. For food contact, a thin PE inner coating (or a glassine paper inner side) is required, as pure kraft paper is not moisture-resistant and can absorb fats.
Our kraft paper block bottom bags range covers standard sizes from 50 g (sample) up to 1 kg (family pack). With or without a window (here too often with a mono-PE window for recyclability), with or without an aroma protection valve (for coffee), with or without a zip closure. Food-grade compliance to EU 10/2011 is standard for coated inner sides. For brands that place explicit value on sustainable packaging, there are also compostable inner coatings made from PLA.


