Paper consists of fibers with air spaces between them. When light passes through paper it hits the fibers, which scatters the light by changing the light's direction. The more the light is scattered the more opaque the paper. This light scattering is referred to as internal reflection. Filler also increases the opacity.
Grigeo Packaging Installs BOBST Folder-Gluer to Expand Capacity and Future-Proof Business
Leading corrugated manufacturer Grigeo Packaging UAB is a subsidiary company of Grigeo Group, one of the largest paper and hardboard manufacturers in the Baltics. The company has recently invested in an EXPERTFOLD 165 folder-gluer, the fifth BOBST machine to be installed since 2016. It joins a host of other BOBST equipment already used for flatbed die-cutting, flexo post-printing, flexo printing and folding-gluing in the factory.