| 摘要 |
The heating blanket comprises a conducting metal band (3) serving as a resistance heater, supplied with current at its ends (C,D). This is embedded between two flexible insulating sheets of material (1). The supporting band may be cut to a required length, since the metal band has a periodically repeating pattern. The flexible heating blanket includes a fine, conducting metal band (3) which is intended to be supplied with electric current at its ends (C,D), embedded between two flexible insulating sheets of material (1). The conducting band is made up from at least two elements (3a, 3b) running in a serpentine fashion, parallel to each other but spaced apart, from one end of the sheet (A) to the other. The conducting band is fastened to at least one of the supporting sheets by adhesive, and has a periodically repeating pattern extending longitudinally down the sheet. This allows the sheet to be cut at one of a sequence of positions, in order to provide a pair of conductors with accessible connections (C, D; E, F). The supporting sheets may also have apertures (30) cut at repeating intervals along their respective edges.
|
