The loss of adhesion and the flaking off of portions of material from the support is a frequently occurring phenomenon. In general, this material consists of fragments and bits of pictorial film. For various reasons these fragments lose adhesion and flake off. It is therefore necessary to re-establish a stabile condition of the entire structure. Bringing the fragments in contact with the underlying layer or between themselves, an adhesive is employed that can insure stability and permanency. During the colour fixing substances that are capable of creating attractive forces between the two surfaces in contact are used. The methods of application are varied and they depend primarily on the type of adhesives used.