Abstract: A coil spring toy having a continuous helical flexible band made of rigid plastic material. The band has generally rectangular transverse cross section having a width substantially greater than its thickness. First outer and second inner edge surfaces of the band are opposed to one another and generally parallel in the direction of the band thickness. The band is wound about a central axis to form a helical coil having a plurality of circular turns substantially equal in size and aligned with one another. In one form, the band has first and second side-by-side portions of contrasting colors. Each portion spans the length and width of the band. In a second form, a figure in outline form is selectively applied to the first outer edge surface to form a normal configuration on the outer cylindrical surface of the toy. Selective bending of the band selectively distorts the figure with respect to its normal configuration.

Abstract: A machine having two extruders operable to move hot plastic materials of different colors through passages of a die. The die has a merging chamber where the plastic materials from the two extruders are fused in side-by-side positions and an outlet opening through which the fused materials are discharged to form a two-colored ribbon product. A rotatable mandrel located in a water tank winds the ribbon product into a helical coil spring shape. A separator plate surrounding the mandrel guides the ribbon in a helical direction as the ribbon is wound around the mandrel. The ribbon product is cooled and set as it is wound around the mandrel.