| 摘要 |
A hot melt glue applicator has an elongate chamber having a first end shaped as a hot melt glue stick entry and a second end equipped with a molten glue dispensing nozzle. The applicator includes a device for progressively moving the glue stick into the chamber, and a device for electrically heating that part of the glue stick which is in the chamber. The device for electrically heating includes at least one heating element including an electrically resistive material track which can be connected to an electrical power supply and which is formed on an electrically insulative surface of a substrate, so as to be in intimate thermal contact with a mass of glue contained in the chamber. Because of the intimate thermal contact established between the resistive track of the heating element and the mass of glue, the thermal energy emitted by the track because of the Joule effect is virtually all absorbed by the mass of glue, which considerably improves the thermal efficiency of the applicator.
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