DEVICE, METHOD AND BAG FOR FORMING FOAM CUSHIONS FOR PACKAGING PURPOSES

摘要

The invention relates to a device, method and bag for forming foam cushions for packaging purposes. The inventive device comprises: means (1, 2, 3) for forming a bag (80) using a tube of flat laminar material (8) from a spool (10), means (4) for transferring the formed bag (80) to a filling zone, means (5, 6) for supporting and opening the bag (80) under a foam-dispensing nozzle (70) in the filling zone, and means (9) for closing the bag (80) once it has been filled. The inventive method comprises the corresponding steps. According to the invention, the bag (80) consists of flat tubular segment comprising folded lateral edges, a sealed base and, close to the upper edge thereof, a second weld line comprising a non-welded segment which is designed to be opened and closed by means of a third weld line that is separate from the second line, such as to form gas outlet passages.