Abstract: A strapping machine includes a supply unit, a guidance frame, a pressing plate, feeder runners, a closure aggregate, a storage unit, a feeder, an insertion device and a guidance structure. The closure aggregate is vertically aligned with the pressing plate and maneuverable, whilst the supply unit is located within close proximity of the strapping area and the pressing plate. The guidance structure includes one canal-like transfer line leading at least to the closure aggregate. The insertion device is accessible from outside, is aligned with the supply unit and is attached to a lower section of an automatically opened guidance canal. The strapping material is fed synchronically to the transfer line with the pressing plate adjustable for height. The insertion mechanism incorporates feeder and runners. The storage unit adjacent to the supply unit is aligned to the exterior of the strapping area.

Abstract: The invention concerns an improved retainer system allowing reliably strapping a package while incurring only minimized wear. This problem is solved by using an additional retainer device (17) placed in front of the inner side of the strap guide frame (11) and comprising an elastic, longitudinally stretched element (18, 19) and a mating support (30), said element and mating support being made of a low-wear material relative to the strap and being mutually parallel and parallel to the strap outlet aperture (23). The elastic element and the mating support subtend thereby a gap to pull the strap consecutively through it.

Abstract: A strapping apparatus includes a conveyor for moving the pack to a strapping station containing, a strap guide duct and a tautening and sealing head. The strap guide duct is mounted laterally offset from the direction of conveyance and being curved and twisted toward this conveyance direction in order to subtend a clear inside space for the pack which thereby can be moved unhampered into and out of the strapping station. A guidance element is associated with the strap guide duct to center the strap being released from the strap guide duct on the pack in the strap in the strapping station. The strap guide duct includes corner deflection elements, duct segments which guide the strap always at its outwardly facing side in merely supporting manner, strap twisting segments inserted between the corner deflection elements and guide ducts and imparting a twist to the strap about its longitudinal axis.

Abstract: A strapping apparatus includes a conveyor for moving the pack to a strapping station containing, a strap guide duct and a tautening and sealing head. The strap guide duct is mounted laterally offset from the direction of conveyance and being curved and twisted toward this conveyance direction in order to subtend a clear inside space for the pack which thereby can be moved unhampered into and out of the strapping station. A guidance element is associated with the strap guide duct to center the strap being released from the strap guide duct on the pack in the strap in the strapping station. The strap guide duct includes corner deflection elements, duct segments which guide the strap always at its outwardly facing side in merely supporting manner, strap twisting segments inserted between the corner deflection elements and guide ducts and imparting a twist to the strap about its longitudinal axis.

Abstract: A strapping machine includes a supply unit, a guidance frame, a pressing plate, feeder runners, a closure aggregate, a storage unit, a feeder, an insertion device and a guidance structure. The closure aggregate is vertically aligned with the pressing plate and manoeuvrable, whilst the supply unit is located within close proximity of the strapping area and the pressing plate. The guidance structure includes one canal-like transfer line leading at least to the closure aggregate. The insertion device is accessible from outside, is aligned with the supply unit and is attached to a lower section of an automatically opened guidance canal. The strapping material is fed synchronically to the transfer line with the pressing plate adjustable for height. The insertion mechanism incorporates feeder and runners. The storage unit adjacent to the supply unit is aligned to the exterior of the strapping area.

Abstract: A roll of material, e.g., thermoplastic ribbon comprises a hollow core made of a plastic strip of which the ends are mutually joined by overlapping, and the core's outer surface facing the material to be wound being of a nature opposing slippage of the material on it. The plastic strip includes an adhesive-coated foil of which the adhesive-fitted surface forms the outer core surface facing the material. The first winding layer facing the core bonds to this core and, as a result, the finished roll is made mechanically strong and this strength can be enhanced by an adhesive-coated plastic foil tautly enclosing the outside of the roll and fitted with a projecting, adhesive free or adhesive-neutralized tear-open tab.

Abstract: A roller device has a bearing axle and a wheel rotatably mounted to the axle in a roller housing. A lifting device is connected to the axle and wheel and is movable to raise and lower the wheel out of and into a travelling plane. A supporting device is fitted to the lifting device and has a support area lowered onto the travelling plane in response to rotation of the lifting device. The lifting device comprises a pair of eccentric discs which are mounted at both ends of the bearing axle and are connected thereto in a rotationally fixed manner. One of the discs engages in a form locking manner a corresponding recess in a side plate of the supporting device and at least one of the discs has two spaced apart spiked surfaces which can be rotated with the disc about the bearing axle in opposite directions against a stop protrusion on the side plate to thereby raise and lower the wheel.

Abstract: The invention concerns a process and a device for avoiding interruptions of operation caused by the strapping, on machines for the strapping of packing elements. The process is characterized by a second strapping coil with further strapping, and in that the leader of one of the two strappings is constantly kept at a standby position in the machine from which, upon removal of the other strapping from the strapping guideway, it is automatically fed to the strapping guideway. The device is characterized in that the feed system is preceded by a switch with two strapping guideways for a leader section for each one of the two strappings, with a strapping feed for the alternative introduction of one of the two strapping leaders into the feed system.