Methods of making dressings

A method of making a medical dressing comprising the steps of

• (A) procuring a package containing a room temperature curable polysiloxane composition consisting essentially of two component parts comprising ingredients which together provide an organosilicon polymer including siloxane units having an alkenyl group having 2 to 4 carbon atoms inclusive, an organosilicon polymer including siloxane units having a silicon-bonded hydrogen atom and a catalyst, the organosilicon polymers being such that they are capable of chemical reaction at room temperature when mixed in the presence of the catalyst to provide a non-cellular polysiloxane mass, said package comprising two separate compartments within a container, one compartment for each component of the composition, each compartment, within a membrane, consists essentially of a component part of the composition where the ingredients present in each such component do not react with each other, there being a propellant located between the membrane and the container whereby the membrane may be caused by the propellant gas to expel the component when required, the package being so constructed and arranged that it may operate to mix predetermined proportions of the components in the absence of air and to dispense the mixed composition from the package,
• (B) operating the package to bring about mixing of the components in said predetermined proportions and
• (C) dispensing the mixed composition from the package to provide said dressing in a desired shape.