Apparatus for vertically supporting and maintaining a web of plastic film horizontally aligned in applications such as machines that form the plastic film into bags and fill them. Separate coplanar consecutively spaced plates are aligned with and extend through a web normal traversing plane. One of the plates has a peak edge extending out of the web normal traversing plane in a first direction, whereas another has a peak edge extending out of the web normal traversing plane in a second opposite direction. The peak edges define an undulating plastic film travel path between a web upstream location and a web downstream location. The web of film is tensioned between the upstream location and the downstream location and travels along the continuous undulating path. The film flexibly bends over the peak edges as a result of the tension and is thereby supported and maintained aligned.

An apparatus for unwinding a roll of material includes an unwinding roller, an idle roller, and a motor. The unwinding roller is for supporting the roll of material. The idle roller is spaced apart from the unwinding roller so that the roll of material can be supported on the idle roller and the unwinding roller. The motor is in mechanical communication with the unwinding roller and is configured to axially rotate the unwinding roller.

Web-wound rolls with a web edge treatment with microspheres and processes to make the same are provided. The web-wound rolls include a substrate web having at least two web edges. One or more stripes of coated material are disposed adjacent to one or both of the web edges. The substrate web is wound upon itself in multiple revolutions about a central core, and each revolution is held substantially separate from the next by the one or more stripes of coated material.

The invention relates to a rolled up thin glass composite comprising a thin glass film and at least one further layer (10, 11, 20, 30) applied over the surface of one side of the thin glass film, wherein the at least one further layer (10, 11, 20, 30) is applied to a radially outer side of the rolled up thin glass film and the at least one further layer (10, 11, 20, 30) contains a desiccant which protects the thin glass film against stress corrosion cracking. The invention also relates to a method for storing a thin glass film by providing a thin glass film, applying at least one further layer (10, 11, 20, 30) over the surface of at least one side of the thin glass film, wherein a desiccant which protects the thin glass film against stress corrosion cracking is added to the at least one further layer (10, 11, 20, 30) and a thin glass composite composed of the thin glass film and the at least one further layer (10, 11, 20, 30) is rolled up in such a way that the at least one further layer (10, 11, 20, 30) is applied to a radially outer side of the rolled up thin glass film.

A control portion controls a distance H and/or a shift amount L1 such that a relationship of L<HL+L1 holds, where L is a length of each sheet among the sheet bundle in the conveyance direction, H is a distance from the conveyance roller pair to an end regulation member in the conveyance direction, and L1 is a shift amount between a first sheet among the sheet bundle and a second sheet adjacent the first sheet. The second sheet is conveyed toward the end regulation member by the conveyance roller pair in the state in which the leading edge of the preceding sheet is in contact with the end regulation member.

A sheet product package and method of making discrete plastic sheets includes a package enclosure with a dispensing opening structure and a plurality of discrete plastic sheets arranged in a stack. The plurality of discrete plastic sheets are disposed within the package enclosure, and each of the plurality of discrete plastic sheets is electrostatically charged. In the method of making the dispensable plastic sheets, electrostatically charged discrete plastic sheets are formed and arranged in a stack. The method may include forming a continuous plastic film, cutting the continuous plastic film into discrete plastic sheets, and, after cutting, electrostatically charging the discrete plastic sheets.

A method for winding a material sheet, in particular a plastic film, by a winding device, wherein the material sheet is guided from at least one first roller to at least one second roller in a conveying direction. At least one cutting device is arranged between the first roller and the second roller to cut the material sheet into at least two partial sheets. The partial sheets are each wound up into a bobbin in the conveying direction behind the second roller. The at least one first roller and the at least one second roller are each driven by a drive so that the tensile stress in the material sheet or in the partial sheets changes periodically over time in the conveying direction of the material sheet.

Provided is a measurement device (10) for detecting local thickenings in a film web (20), more particularly an extrusion and/or coextrusion film, having a first roll (14) for rolling on the film web (20) that can be moved along, a second roll (18) that can be supported indirectly above the film web (20) on the first roll (14) for rolling on the film web (20) that can be moved along, wherein the second roll (18) is resiliently guided in the thickness direction of the film web (20) that can be moved along, more particularly in the vertical direction, and at least one distance sensor (24) that is stationary with respect to the first roll (14) and/or to the film web (20) that can be moved along, for detecting a distance of the second roll (18). The second roll (18), which can be displaced from a local thickening of the film web (20) in the thickness direction of the film web (20), makes it possible to quickly and easily detect local thickenings in a film web (20).

To stabilize a shape of a cut portion regardless of characteristics of a medium. The medium cutting method includes a first thrusting process of thrusting a cutter blade into a medium 2 so as to penetrate the medium 2, and a first cutting process of relatively moving the cutter blade with respect to the medium 2 in a longitudinal direction of the medium 2 and a width direction of the medium 2 with a first thrusting spot SP2 as a starting point, which is a spot thrust by the cutter blade in the first thrusting process, to cut the medium 2 in a direction inclined with respect to the width direction of the medium 2.

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.