Machine thermally sealing fluid or viscous food-filled packaging tubing

摘要

Active surfaces (117) of the heater (114) have longitudinal projections (118). Each pressure cushion (122) has a first longitudinal cross-section (124) and rigid seating (123). It faces the corresponding projection (118). A second longitudinal section (125) is held flexibly in the seat (123) and borders on the opposite side of the first (124) with respect to the intermediate plane ( pi ). PREFERRED FEATURES:- The first longitudinal section of the pressure cushion is shaped to fit the seat perfectly. Each second longitudinal section of the pressure cushion forms a longitudinal hollow space with the respective seat. The second jaw has two front longitudinal support surfaces for each seat, which face the first jaw. These are arranged on opposite sides of the seat with respect to the supply path (A). Each pressure cushion has a pair of side lips, each contacting the respective longitudinal support surfaces. Each seat includes a longitudinal end surface, a first plane long side surface and a second long side surface facing the first. An undercut is formed with the end surface. The second side surface of each seat has an angled first section forming the undercut with the end face and a straight second section parallel to the first side surface from the first section to the first jaw extends. The second longitudinal section of each pressure cushion forms two long hollow cavities with the respective seat. One of these extends to the first section of the second side surface. The other extends to the second side surface. A further variant based on these principles is described.