Method and apparatus for drying filamentary material

摘要

In a method and apparatus for drying filamentary material, a duct is provided for enclosing a portion of a passline. The duct comprises two parts relatively disposed laterally of the passline. These parts are relatively movable away from one another laterally of the passline to provide a duct open position and towards one another to provide a duct closed postion. First and second guide wheels are provided for guiding the filamentary material along the passline through the duct. The guide wheels are relatively movable along the passline between the duct parts in the duct open position between a first pair of relatively close positions and a second pair of positions at opposite ends of the duct. With the duct in the duct open position and the guide wheels in the first pair of positions, filamentary material is fed over the guide wheels. The guide wheels are moved relatively along the passline from the first pair of positions to the second pair of positions to draw the filamentary material along the passline between the duct parts. The duct parts are moved into the duct closed position to enclose the filamentary material extending between the guide wheels. A drying gas is passed into the duct while advancing the filamentary material along the passline and guiding it through the duct. The method and apparatus are useful for drying solvent-based colorants on polymer-insulated wire.