Measuring device for detecting and measuring a wrapping force of a stretchable plastic material film wrapped around a load comprising a first angular element that i can be associated and fixed to at least one of an edge and a flat wall of the load, at least one force sensor fixed to the first angular element, a second angular element fixed to, and supported by, the force sensor and a control unit, connected to the force sensor and arranged for receiving therefrom a signal related to a wrapping force exerted by the film on the second angular element by the film that is wrapped around the load and around the measuring device; a system for detecting and measuring a wrapping force of a stretchable plastic material film (50) wrapped around a load comprising one or more measuring devices associated with, and fixed to, the load at edges and/or at flat walls of the load and an external receiving unit that is arranged for receiving signals which are transmitted by the measuring devices and related to a wrapping force exerted by the film wrapped around the load and around the measuring devices.

A dispensing system includes a container, a roll of slit paper, and a passive tension mechanism. The container includes panels and one of the panels includes a dispensing aperture. The slit paper on the roll is in an unexpanded state. The slit paper can be transformed from the unexpanded state to an expanded state by exerting a longitudinal pulling force on the slit paper. The passive tension mechanism is in the container and arranged such that a path of the slit paper from the roll to the dispensing aperture passes through the passive tension mechanism. The passive tension mechanism is configured to induce tension in the slit paper along the path between the roll of the slit paper and the dispensing aperture such that the slit paper transforms from the unexpanded state to the expanded state along the path between the roll of the slit paper and the dispensing aperture.

An apparatus for cutting and applying elastically stretched tape segments includes a transfer unit including a plurality of transfer elements, each of which has two gripping elements movable between a close position and a distant position; a plurality of anvil elements carried by the transfer unit and moving together with the transfer elements; and a rotary knife cooperating with the anvil elements to transversely cut successive end portions of a continuous elastic tape held by the transfer elements.

A device for measuring a stretching force on a film, including an unwinding station to hold and unwind a spool of stretch film via an unwinding motor, and including a first stretching station with a first driven stretch roller and a second driven stretch roller for imparting a predetermined first stretch to the stretch film. The device includes a second stretching station with a third driven stretch roller for imparting a second predetermined stretch to the stretch film. A sensor is provided in the unwinding station in order to measure a release parameter indicative of where the stretch film releases from the spool. A processor is provided to calculate a first and second force, needed to obtain respectively the first stretch and second stretch, on the basis of the release parameter and an output of the first, second, third torque meters and the unwinding torque meter.

A dunnage conversion assembly includes a supply of expandable sheet material and a dunnage conversion apparatus configured to expand the expandable sheet material. The apparatus includes a frame, a supply support mounted to the frame to support a supply of sheet material, and first and second expansion members rotatably mounted to the frame downstream of the supply support to receive the sheet material therebetween. At least one of the first expansion member or the second expansion member is rotatably driven. A drive assembly of the apparatus includes a drive member and a motive device that drives rotation of the drive member to dispense the sheet material from the supply. The drive member is movable between an operating position adjacent the supply support and a disengaged position spaced from the supply support. The drive member in the operating position is biased toward the supply support.

According to some embodiments, a dispenser for expanding and dispensing paper void fill is provided. In some examples, the dispenser includes: a supply of expandable slit sheet paper; a support for holding the supply of expandable slit sheet paper; a friction member arranged proximate the supply of expandable slit sheet paper and arranged such that an end of the expandable slit sheet paper contacts the friction member as the expandable slit sheet paper is manually or automatically pulled based said friction member; and the friction member including a plurality of inwardly extending projections configured to provide frictional resistance to the expandable slit sheet paper to cause the expandable slit sheet paper to expand into an expanded state with open cells.

A dispenser for a sheet material roll of sheet material having expandable slits. The dispenser including side support members, an input roller, an output roller, at least one roller support member and a drive system configured to couple rotation of the input roller and the output roller such that a velocity ratio of output roller to input roller is greater than 1.1 to expand slits in the sheet material. The dispenser may be unpowered or powered.