There may be very significant difference in surface roughness between the matte and gloss inserts. The matte insert has a high coefficient of static friction (the ratio of force between two surfaces in contact--the higher the value the greater the frictional force acting between the surfaces) and is getting hung up in the insert machine.
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.