Abstract: In a ribbon consisting of a cross-linked plastic which can be shrunk by the action of heat and can be placed in the manner of a collar (2a) around an elongated object (4), and after the connecting together of the edges (3a, 3b) of the ribbon, can be shrunk onto the object (4) by the action of heat. The edge regions (3a, 3b) of the ribbon consist of non-cross-linked plastic and a connecting together (5) of the ribbon edges (3a, 3b) is effected by fusion welding.

Abstract: A cable splice, tube joint, or the like, is covered by a fitting constructed as a split hose provided along one edge with a rail made of metal or a strong synthetic; a similar rail element or an integral fastening element is provided on the other edge and secured to the first rail by welding, adhesive bonding, or soldering in order to obtain a joint which resists tension and compression. The hose has been laterally slipped onto and over the cable splice or tube joint and, after the split joint has been sealed (or concurrently therewith), the hose is heat-shrunk. Various rail configurations are shown; a method of making the hose is explained.

Abstract: Silane is grafted upon polymer molecules and the material is shaped (e.g., extruded or injection-molded) and caused to cross-link. Both steps must be completed before expanding (following reheating, if necessary) and cooling the object at the expanded state. Cap- and sleeve-making is disclosed, including internal as well as external exposure to water for cross-linking, possibly combined with the requisite preheating for the expansion.