A system for controlling the temperature of a film before and/or during application, the system including: a heat source for heating a film; and stretch rollers; wherein the heat source heats the film from an ambient temperature to a temperature from about 2 C. to about 40 C. above the ambient temperature, wherein the film is heated prior to or simultaneous to being stretched by the stretch rollers, and wherein the ambient temperature is below 15 C. A system for improving the application of film by transfer of electrostatic charge is also described. The preheating system and/or electrostatic charge system may be used to enhance binding and sealing properties of stretch films used for wrapping palletized products in a reduced temperature environment. Other embodiments of the preheating film system and electrostatic charge system, and methods for their use, are described herein.

The invention relates to a cover film for fixing material when pressing round bales. The film comprises a copolymer.

An automatic roll change system for a stretch wrapping machine may include multiple mechanically-actuated load stations capable of being actuated by a common actuator assembly, as well as pivotable support members for use in positioning packaging material in a tortuous path for loading into a packaging material dispenser.

A one-way clutch arrangement may be provided on a packaging material dispenser of a stretch wrapping machine in part to provide differing rates of rotation for upstream and downstream pre-stretch rollers in forward and reverse directions of the packaging material dispenser.

An unpacking system having a folding-out device for folding outwards an initially folded-in packaging portion of an item of packaging for an object, and having a stretching device for stretching an item of packaging for an object. The item of packaging herein is in particular a pouch, and the object is in particular a pharmaceutical or cosmetic object. The unpacking system furthermore has a transportation installation for transporting the object in a transportation direction. The packaging portion in the stretching device is stretched parallel with the transportation direction. A filling system is disclosed having such an unpacking system, and methods are disclosed for folding outwards, for stretching, and for unpacking.

A pre-stretching roller of an unwinding apparatus, associable to a wrapping machine, includes a main body elongated and manufactured by an extrusion process of a metal alloy. The main body includes a first tubular element having a cylindrical shape and defining an external cylindrical wall for interacting with a film, a second tubular element internal to the first tubular element and having a first end provided with a first seat suitable for coupling with a driving shaft of a driving unit and an opposite second end provided with a second seat suitable for coupling with a supporting pin for fixing the pre-stretching roller to the unwinding apparatus, and a plurality of longitudinal vanes which connect the first tubular element to the second tubular element. The second tubular element has a plurality of longitudinal ribs, each connected to a respective longitudinal vane.

A method, apparatus and program product may utilize packaging material quality compensation to sense changes in certain characteristics of a packaging material that can be associated with increased risks of film breaks, and automatically make certain changes in machine settings to mitigate the impact of those enhanced risks.

An apparatus for fabricating a reinforced stretch film comprising a plurality of edge folding stations, each folding stations being configured to fold each edge of the stretch film one time, a plurality of drums for stretching the stretch film downstream of the plurality of edge folding stations, the drums being configured to rotate with different surface speeds to pre-stretch the stretch film, a final roller for winding the pre-stretched stretch film, and an assembly for driving the final roller.

A pallet wrapping system with a pre-stretch carriage and at least two encoders. The pre-stretch carriage is configured to pre-stretch stretch film and has at least two stretch rollers and a hinged door. The at least two stretch rollers includes a first stretch roller with an outer surface that moves at a first speed and a second stretch roller with an outer surface that moves at a second speed higher than the first speed. The door provides access to the stretch rollers when in an open position and entraps the stretch film between the stretch rollers and the door when in a closed position. The encoders are mounted on the door. Each of the encoders is configured to contact the stretch film on the outer surface of one of the stretch rollers and measure a length of stretch film passing over that stretch roller.

A pallet wrapping system with at least two guides sets configured to narrow the width of stretch film to form a banded edge on the stretch film. A plurality of rollers is positioned adjacent to the plurality of guides to facilitate passing the stretch film through the plurality of guides. A first roll of stretch film positioned to pass stretch film to the first set of guides, and a second roll of stretch film positioned to receive banded stretch film from the first set of guides, layer the banded stretch film onto unbanded stretch film to form an unbanded composite stretch film, and then pass the unbanded composite stretch film to the second set of guides to form a banded composite stretch film having a banded first ply with a width equal to the first width and a banded second ply with a width equal to the second width.