Abstract: A method of opening an outer bag of a pre-filled double-bag including a bag content and an opening system. A wall of the outer bag includes a cellulose-based material and a wall of the inner bag may include a plastic-based material enclosing an inner compartment including the bag content. The method may include an opening operation performed by the opening system, so as to open the outer bag leaving the inner bag substantially intact. The opening system may include a laser arrangement including one or more laser units emitting laser light having wavelengths in the range of 7-13 ?m. The opening operation may include acts of exposing a wall area of the outer bag to the laser light, so as to at least provide a perforation of the outer bag in the exposed wall area.

Abstract: A system for (1) for filling of big bags (4) of various heights with material and a method for adjusting thereof, wherein a big bag (4) is to be placed with its filling spout (3) around an outer pipe (6) and the bottom (2) of the big bag (4) rests on an underlying surface (7). The outer pipe (6) is telescopically engaged to a feed pipe (5). The feed pipe (5) is in sections extendible. The feed pipe (5) is designed to fill a determined quantity of material in a vertical stream from an overlying dosage unit (8) via the outer pipe (6) and down into the big bag (4). The feed pipe (5) at its upper connection (5.3) includes at least one radial continuous interface surface design to attach to another feed pipe's (5.2) downward facing rim (5.6) or to the underside of the dosage unit (8.2).

Abstract: A system for filling of big bags of various heights with material and a method for adjusting thereof, wherein a big bag is to be placed with its filling spout around an outer pipe and the bottom of the big bag rests on and underlying surface. The outer pipe is telescopically engaged to a feed pipe. The feed pipe is in sections extendible. The feed pipe is designed to fill a determined quantity of material in a vertical stream from an overlying dosage unit via the outer pipe and down into the big bag. The feed pipe at its upper connection includes at least one radial continous interface surface design to attach to another feed pipe's downward facing rim or to the underside of the dosage unit.

Abstract: A system for (1) for filling of big bags (4) of various heights with material and a method for adjusting thereof, wherein a big bag (4) is to be placed with its filling spout (3) around an outer pipe (6) and the bottom (2) of the big bag (4) rests on an underlying surface (7). The outer pipe (6) is telescopically engaged to a feed pipe (5). The feed pipe (5) is in sections extendible. The feed pipe (5) is designed to fill a determined quantity of material in a vertical stream from an overlying dosage unit (8) via the outer pipe (6) and down into the big bag (4). The feed pipe (5) at its upper connection (5.3) includes at least one radial continuous interface surface design to attach to another feed pipe's (5.2) downward facing rim (5.6) or to the underside of the dosage unit (8.2).