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AssigneeGlass Surface Technology
InventorsChristophe Wagner, Alexis Marsal
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The invention relates to a method for producing a barrier layer (13, 9) for coating the inner surface (12, 17) of a receptacle (10, 6) which is made at least in part of plastic and is used for holding products that are biocompatible for humans and/or animals; in said method, a solution is formed that contains at least one solvent, water, at least one organo-functional molecular precursor, and an acid as a catalyst, the complexed solution, which is undergoing hydrolysis and condensation, is applied to at least one portion of the inner surface of the receptacle, the applied solution is dried at a specific drying temperature below 100° C., and the receptacle is conveyed away and stored before being baked. The acid used is citric acid.
A process for the manufacture of a barrier layer (13, 19) for coating the internal face (12, 17) of a receptacle (10, 16), at least partly made of plastic, suitable for containing products biocompatible with man and/or animals, in which:
A receptacle (10, 16) comprising an internal surface (12, 17) made of plastic and suitable for containing products biocompatible with man and/or animals, characterized in that said surface (12, 17) is covered, over at least a part, with a solidified coating layer (13, 19) obtained from a solution comprising at least one solvent, water, at least one organofunctional molecular precursor and citric acid, as catalyst, said coating layer forming a hybrid organoinorganic matrix arranged in order to produce a physicochemical barrier.
Dependencies are inferred from the claim text.