ZERREISSBARES KERNELEMENT UND EIN SOLCHES AUFWEISENDE KALTSCHRUMPFROHRVORRICHTUNG

In a cold-shrink tube device, to permit a core member to be readily and correctly removed from an elastic tube member without deteriorating an attaching operability onto an object wherein the core member holds an end region of an elastic tube member in an elastically expanded condition. A hollow tubular body of the core member is torn into a ribbon shape along a weakened line formed spirally and continuously over an entire axial length of the body. A ribbon-shaped region defined in a spiral on the body by the weakened line includes a major ribbon section having an axial dimension larger than an axial dimension of an end ribbon section defined, adjacent to a tearing-start end, between the weakened line and one axial end of the body. When the core member is arranged in the end region of the elastic tube member, the ribbon-shaped region of the body with around three coils, including the end ribbon section and the major ribbon section, is accommodated inside the end region.