Desirable to Use Coloured Multi Orthopaedic Fiberglass Casting Tapes Materials
For some considerable time now it has been desirable to use coloured multi orthopaedic fiberglass casting tapes materials which includes for example solid colours, prints and multicoloured decorations. Methods of colouring casting materials are disclosed in US Patent. However such casts suffer from the disadvantage that the coloured prepolymers will readily stain other material with which they come into contact. Methods of overcoming this disadvantage are disclosed in European Patent Application and PCT Application. Both applications generally relate to the manufacture of coloured orthopaedic casts or multicoloured orthopaedic casts by printing one or more pigments onto the surface of a knitted substrate which results in the coating or partial coating of some of the yarns but not the individual filaments. In addition, such printing techniques prove to be expensive in manufacture, inter alia, because of the need to clean machinery when changing production from one colour to another. It is also a method which does not lend itself well to continuous production and generally requires a batch process.