| 摘要 |
An electrical heating device for use, for example, on a plastics injection moulding machine or a plastics extrusion machine including dies, comprises a heating element 10, a flexible heat barrier 12, a sheet or strap of flexible material 14, and inner covering 16 of flexible, heat-resistant material, a layer 18 of thermally insulating material, and an outer covering 20 of flexible material. The heating device may be in wrap-around form and have a clamping arrangement 22 which bridges the longitudinal split in the device and enables the device to be securely clamped around a feed barrel or pipe, for example. The heating element 10 is applied directly to the object to be heated, thus saving energy, and the outer covering 20 remains cool enough for a thermosensitive strap (not shown) to be sewn thereto. |
