Abstract: A process for producing protection product of a transferrable protective film for covering and protecting the surface of a document or another element, comprising providing a non-stick support sheet (1), at least one printing (2) of a polymerizable liquid mixture of a hydroxylated polyol and an isocyanate or polyisocyanate, for obtaining a thin transparent polyurethane film, covering said film with a transparent adhesive layer (3) and protecting said adhesive layer with a silicone protective sheet (4); the polyurethane film may be transferred without heat to the document to be protected in order to avoid falsification thereof and for protecting the document from external damaging elements.