| 摘要 |
A device is provided for successively melting a solid working material, such as a hot melt adhesive, packed in a packaging bag, and for pressing the molten working material out of the packaging bag. The device includes a cylindrical receiving chamber provided with at least one outlet opening at the end for receiving the packaging bag filled with the working material and having a front end and a back end. At least one heating element (30) is positioned in the region of the at least one outlet opening for melting the working material at the front-end of the packaging bag, which has a discharge opening for the molten working material. A pressing device with a pressing plunger can be displaced within the receiving chamber and acts on the back end of the packaging bag. The device is protected from contaminations by molten working material when used with undersized packaging bags that are extremely filled in that the receiving chamber at the outlet end thereof facing the at least one outlet opening includes a ring-like constriction with a peripherally sealing contact surface for the packaging bag at least at an edge zone thereof surrounding the discharge opening. |
