Several Methods of Making a Light-weight Orthopedic Casting Tape (4)
The fourth methods of making a light-weight orthopedic casting tape,comprising the steps of:The method of claim 1, wherein said filler is selected from the group consisting of glass and ceramic bubbles having an average particle diameter between 5 and 500 μm, and a specific gravity less than about 2, wherein the thickness of said casting tape is at least 100 microns greater than the thickness of said uncoated scrim, and wherein said composite mixture has a viscosity of at least 100 Pa s when measured at 1 rad/s.
The fifth method of making a light-weight orthopedic casting tape, comprising the steps of:mixing a polyisocyanate compound, a reactive hydrogen compound, a volatile solvent and a filler to form a composite mixture; coating said composite mixture on a light-weight scrim while the composite mixture's viscosity is low enough so that the composite mixture can spread out on the scrim; and then removing said volatile solvent, thereby increasing the viscosity of said composite mixture to an extent that the composite mixture resists pooling during storage.
