Abstract: A machine for chemically frosting articles made of glass, more particularly flasks, of the type comprising a continuous conveyor-chain passing consecutive treatment stations, from frosting to drying, and furthermore comprising holders in the form of sealing stoppers for the flasks; the conveyor-chain is made of a material resistant to the reactants used, is equipped with hooking means co-operating with holders for the articles to be frosted, and is in the form of links hinged in pairs about an axis; the axis is extended outwardly on at least one side of the chain to act as a hooking means for the holders of the articles.