Electrical heater for use in a mold of an injection-molding machine

摘要

An electrical heater for a mold has an elongated tubular casing made of a ductile metal and deformable by hand, a manually deformable electrical heating element extending longitudinally inside the casing, and a manually deformable mass of electrically insulating potting filling the casing around the element. The casing can be annularly corrugated and formed by a succession of like U-section rings each having a pair of parallel legs and a bight portion and a succession of like rounded annular webs interconnecting the rings and each joining a leg of one respective ring with a leg of an adjacent respective ring.