Abstract: A driven crimping gear (10) cooperates with the first idler crimping gear (12) and the second idler crimping gear (14). The gears pull paper of a roll (12) which paper has had the edges curled over. The paper is guided through the gears by plates (28) and (30).

Abstract: A driven crimping gear (10) cooperates with the first idler crimping gear (12) and the second idler crimping gear (14). The gears pull paper of a roll (12) which paper has had the edges curled over. The paper is guided through the gears by plates (28) and (30).

Abstract: A tube of film (12) is pierced by an injection needle (18) that fills the tube with air as the film and needle move. Two spaced heat seal wires (22) seal longitudinal extents of the tube from each other. A piston shaft (100) is constrained to move with a carriage (56) to compress and expel air from a cylinder, which air is supplied to the space within the tubular bag. An air paddle (92) pushes on the outer side of the bags to cause air that has recently been injected to be urged forwardly, within the bag, and through the space between an anvil (23) and the sealing wires (22) into the bag that is formed moments later by heat sealing.

Abstract: In a machine for making packaging material, paper is pulled off a roll by two pairs of spaced rubber nip rollers, the lower ones of which rollers are driven. The edges of the paper roll over as the paper passes through the former and the rolled paper is pushed into a pair of meshing gear wheels in order to hold the rolled dunnage together loosely. A pair of blades cut the dunnage to the required length after it has passed through the gear wheels.