Meisterprüfung Buchbinder Practice Questions - Meisterprüfung Buchbinder (Austria) Exam

Paper expands significantly in thickness and width across fiber diameter when absorbing moisture from glue; spine-parallel grain ensures moisture expansion occurs towards the open fore-edge, preventing cockling, gutter buckling, and stiff page opening. Spine-parallel grain prevents the printing ink from bleeding into the gutter margins during drying. Grain running across the spine increases the tensile strength of the sewing thread by 50%. Cross-grain paper (Querlauf) makes the paper completely impervious to aqueous adhesives.