Abstract: A device for feeding a packaging machine via a bag stack feeder possesses at least one holder to secure a stack of bags. To date an operator placed the corresponding empty bags in stacks on a chain conveyor which fed the bags into the packaging machine. Due to the short cycle time, the manual loading tied an operator continuously to the machine. In order to avoid this, a bag stack feeder is equipped with a plurality of tray-like carriers, each fitted with a holder and each being detachable from the bag stack feeder. These carriers are respectively stored in large numbers in a magazine, which is exchangeable as a unit.

Abstract: Heat-sealable packaging films, particularly plastic bags, are hot pressure welded with an apparatus having at least one, and often two welding terminals, each having an electrically heated welding wire stretched thereacross. The welding terminal preferably has an elastic silicone backing which is protected from the welding wire by a covering material in the form of a sheath which surrounds the welding wire. The sheath is preferably made of plastic, such as polytetrafluoroethylene, which surrounds the welding wire with a minimum of play. When the sheath is formed from a sheet with overlapping edges, the area of overlap runs longitudinally with the wire and is arranged on the welding terminal such that it faces away from the packaging film being welded.

Abstract: An apparatus is provided for the transport of products in the course of a packaging process, where at least two pushers, pivotably mounted along a guide rod, are driven by a traction mechanism alternately back and forth in opposite directions along a product track. The pivotable mountings allow their respective pushers to swing between active and passive positions so that in the active position the pusher moves a product in one direction along the track, while a pusher in the passive position is pivoted away from the track while being driven in the opposite direction to return to a starting point. Upon reaching the starting point, the pusher in the passive position is pivoted back to the active position for moving the next product. The traction mechanism is preferably a toothed belt which is driven by a servomotor with a programmable speed profile, and the pushers are preferably connected to the traction mechanism by overload couplings.

Abstract: The side walls (6, 7) adjacent a vertically reciprocable platform (3) are moved towards each other to compress compressible products (1), such as kitchen paper towels, toliet paper and the like, for introducing them into a plastic bab (B) upon vertical movement of the platform (3). The side walls are coupled through cam follower rollers (6b, 7b) to inclined guide tracks on guide track elements (9, 10), and slidably coupled to move with the platform on a guide rod (8). The angle of inclination of the guide tracks is adjustable, as well as the separation of the guide tracks from each other, so that the degree of compression, as well as the size of the compressed package, can be readily controlled.

Abstract: To transport and turn compressible paper products, such as toilet paper rolls, kitchen towels and the like, a plurality of such products are received, lying flat, on an L-shaped receiver (4) which pivots to stand them on end and moves in translatory direction towards a removal transport apparatus, the translatory movement being guided by guide rods (8) and the pivoting or tilting movement of the receiver being controlled by an engagement element, such as a pin or pins (14) engaging a guide track or tracks (13) so that the receiver will pivot as it is moved in translatory direction. Preferably, the receiver surfaces (4a, 4b) are formed in comb, fork or tine structure, to interdigit with support structures from which the goods are received and to which they are delivered.

Abstract: To retain compressible articles such as paper towels, toilet paper and the like tightly compressed in a weldable foil, a feeding push element (3) pushes the articles into a bag and, in accordance with the invention, the bottom of the bag is yieldingly restrained to permit movement of the articles into the bag while displacing the bag against a yielding force. When the bag is filled, the counter abutment plate (6) adjacent the bottom of the bag has reached a limit or terminal position, so that articles in the bag are compressed. Hold-down elements then close over the still open end of the bag, permitting sealing of the still open bag while the articles are retained compressed. The abutment plate can then be moved out of position for further transport of the filled bag with the material retained therein in compressed condition.