Brochure printed on coated paper from the Joan Ballester fund. Youth Documentation Centre of the Youth General Directorate of Generalitat (catalan government). Digital photomontage (before / after). Before conservation the central scotch tape causes strains on the paper not enabling its natural moisturizing. Thus wrinkles are created all along. After removing sellotapes the paper expands and contracts in a homogeneous manner, without wrinkles.
More about Degradation mechanisms on pressure rsensitive tapes.