A testing machine to perform measurements and/or tests on a plastic film comprises a basic structure provided with a supporting plane, an unwinding station provided with an unwinding roller that supports a reel of film, a pre-stretching station arranged to unwind and to pre-stretch the film from the reel. The testing machine further comprises a wrapping station provided with a testing drum to be wrapped by the film coming out from the pre-stretching station, a plurality of measuring groups to perform measurements of dimensional and/or physical parameters of the reel and of the film, and a plurality of testing groups to perform respective tests and measurements on the film in order to determine mechanical and physical properties thereof.

A testing machine to perform measurements and/or tests on a plastic film comprises a basic structure provided with a supporting plane, an unwinding station provided with an unwinding roller that supports a reel of film, a pre-stretching station arranged to unwind and to pre-stretch the film from the reel. The testing machine further comprises a wrapping station provided with a testing drum to be wrapped by the film coming out from the pre-stretching station, a plurality of measuring groups to perform measurements of dimensional and/or physical parameters of the reel and of the film, and a plurality of testing groups to perform respective tests and measurements on the film in order to determine mechanical and physical properties thereof.

This invention provides web-cutting mechanism that can be mounted in line at an appropriate location between the web-handling peripheral (printer) and a web roll. The cutting mechanism operates before the available storage in the winder festoon has been exhausted, and decouples the roll's energy from the web. The cutting mechanism can employ a blade that is drawn through the web solely by the movement of the web itself. The blade is mounted at a (e.g.) 45-degree angle to web travel, causing it to be pulled through the web. A negator spring assembly and associated cable drives the blade into the side edge of the web when a slide-mounted blade shuttle assembly is released by a latching pawl of a solenoid assembly. The solenoid is triggered by a signal indicating an emergency stop condition, such as an upstream jam.

This invention provides web-cutting mechanism that can be mounted in line at an appropriate location between the web-handling peripheral (printer) and a web roll. The cutting mechanism operates before the available storage in the winder festoon has been exhausted, and decouples the roll's energy from the web. The cutting mechanism can employ a blade that is drawn through the web solely by the movement of the web itself. The blade is mounted at a (e.g.) 45-degree angle to web travel, causing it to be pulled through the web. A negator spring assembly and associated cable drives the blade into the side edge of the web when a slide-mounted blade shuttle assembly is released by a latching pawl of a solenoid assembly. The solenoid is triggered by a signal indicating an emergency stop condition, such as an upstream jam.

An inspecting apparatus for inspecting print images printed on a transparent printing medium. The apparatus includes a first transport roller for transporting the transparent printing medium; a second transport roller spaced from the first transport roller, and disposed downstream in a transport direction, for transporting the transparent printing medium; a photographing device for photographing the print images located in an inspection area; and a light emitting device for emitting light for photographing the print images located in the inspection area. The first transport roller and second transport roller have outer circumferential surfaces thereof each with a light absorbing member for absorbing the light from the light emitting device.

The present invention is directed to a method and apparatus for securely applying print to a web of continuous polymeric film. The web can first travel in a machine direction on a tensioning roller and onto a folding board whereupon the web is divided into first and second partial widths with a cross-section of the web taking on a U-shape or a V-shape. In between the cross-section of these two partial widths a printer can be placed such that the printer prints onto an inner surface of first partial width. Once the printing is complete, the folding of the web can be completed such that an inner surface of the second partial width is in contact with, covers, and protects the printed matter placed onto the first partial width.

A printing system having: a print head arranged with a predetermined nip for printing to a recording medium; a sensor positioned upstream of the print head, and configured to detect possible joints of the recording medium; a spacer arranged in a region of the print head, the spacer being configured to be displaceable to deflect the recording medium and increasing a distance between the print head and recording medium; an actuator to displace the spacer element; and a controller configured to activate the actuator to displace the spacer upon detection of a joint by the sensor.

A sheet conveying device includes a detector configured to detect an attitude of a conveyance target medium, a corrector configured to perform a correcting operation based on a detection result of the detector, and circuitry configured to calculate an angular displacement correction amount and a lateral displacement correction amount of the conveyance target medium, cause the corrector to perform the correcting operation in a direction perpendicular to a sheet conveying direction, based on the lateral displacement correction amount, after the corrector grips the conveyance target medium, and cause the corrector to rotate by the angular displacement correction amount of the conveyance target medium before the corrector grips the conveyance target medium and to perform the correcting operation in a direction of rotation of the conveyance target medium, based on the angular displacement correction amount, after the corrector grips the conveyance target medium.

A sheet conveying device includes a detector configured to detect an attitude of a conveyance target medium, a corrector configured to perform a correcting operation based on a detection result of the detector, and circuitry configured to calculate an angular displacement correction amount and a lateral displacement correction amount of the conveyance target medium, cause the corrector to perform the correcting operation in a direction perpendicular to a sheet conveying direction, based on the lateral displacement correction amount, after the corrector grips the conveyance target medium, and cause the corrector to rotate by the angular displacement correction amount of the conveyance target medium before the corrector grips the conveyance target medium and to perform the correcting operation in a direction of rotation of the conveyance target medium, based on the angular displacement correction amount, after the corrector grips the conveyance target medium.

A method for protecting a unit for converting a web substrate to limit a jam of the substrate inside the unit, the unit converting the substrate when the unit is stopped, in a packaging production machine: the steps of: detecting at the outlet of the unit that the converted web does not come out; stopping a motor of an infeed arrangement to prevent the substrate from entering the unit; stopping a motor of a feathering drive; and simultaneously stopping the machine, and guiding the substrate to an accumulation storage.