Temperature control device provided in a plastic processing machine and process of manufacturing a shell section of a heat transfer shell for use in such device

Abstract From the Canadian patent

The temperature control device comprises heat transfer shells, each of which consists of two shell sections, each of which consists of a metal casting in which a single temperature control element is embedded. The temperature control element has been formed from a tubular blank to comprise at least one loop and is formed with locating surfaces, which are exposed to recesses formed in the inside and outside peripheral surfaces of the shell section. Owing to that design the metal castings may be made by die casting under relatively high injection pressures and with a much smaller wall thickness so that the inside peripheral contacting surfaces of the shell sections can much more snugly …