Forming shoulder for forming tubular packaging from sheet material comprises prismatic plate connected to forming edge, surface of shoulder being made up of movable bars with curved surface

摘要

The forming shoulder (1) for forming tubular packaging from sheet material comprises a prismatic plate (5) connected to a forming edge (3). The surface of the shoulder is made up of bars (7) with a curved surface and its radius can be adjusted by moving these so that the all the fibers in the sheet being formed have the same length and do not move tangentially with respect to each other. An independent claim is included for a method for making the shoulder.