Device for manufacturing film tube made of flexible film flat web, has counter heating element that is arranged inside film tube in such way that film ends extend straight to adjoining film areas of film tube

摘要

The device has a longitudinal seam (6) formed by overlapping film ends (4,5) of a film flat web (1) and a molded shoulder for turn-over of the flexible film flat webs around a format tube to a film tube (3). A transport device is provided to transport the film flat web, where a heating equipment (8) has a peripherally movable heating tape and a counter heating element interacting with the heating tape. The counter heating element is arranged inside the film tube in such a way that the film ends extend straight to adjoining film areas of the film tube. An independent claim is included for a method for manufacturing film tube made of flexible film flat web.