figure 89

mixed pulp with rather long, light fibrillated fibres (KNP sample 113). Bank paper, most fibres are longer than 1 mm. Note straight fibre ends; this indicates short beating with high beating pressure, probably to keep the fibres as opaque as possible. Furnish consists of coniferous fibres for strength, aspen and straw as filler fibre. Furnish description gives barium sulphate as mineral filler. [micrographs and z-stack BvV].

Stacks Image 18