A packaging machine including a hot plate assembly adapted to fuse a length of heat-sensitive film wrapped around a package. A controller is adapted to calculate a time period the heating element is energized to fuse the length of heat-sensitive film wrapped around the package based on an initial temperature of the heating element. A hot plate status indicator is adapted to indicate at least to different statuses of operation of the packaging machine.

A method for optimizing a welding process to produce a weld joint having a predetermined strength includes measuring a plurality of melt layer thicknesses of weld joints for a plurality of sample assemblies formed by the welding process, measuring a plurality failure loads of weld joints for the plurality of sample assemblies, each of the measured plurality of failures loads being associated with one of the measured plurality of melt layer thicknesses, selecting a first failure load from the plurality of measured failure loads responsive to determining that the first failure load corresponds to a predetermined weld strength, and selecting a first melt layer thickness from the plurality of measured melt layer thicknesses that is associated with the selected first measured failure load.

A method for joining a lens with a housing of a lighting device for a motor vehicle, having the steps: positioning the housing in a receiving device of a welding device, said housing having on its underside at least one fastener for attaching the lighting device in the motor vehicle, identifying the position of the at least one fastener relative to the receiving device, calculating a correction value on the basis of the identified position of the at least one fastener, and moving the lens held in a holding device of the welding device in the direction of the housing along a travel distance and welding the lens to the housing.

Provided are a rubber sheet member joining device and method. At least one opposing surface of a pair of gripping parts is provided with a contact member having a contact surface projecting toward an other opposing surface of the pair of gripping parts; the pair of gripping parts grip ranges in proximity to end surfaces in a state in which end surfaces project from the one opposing surface toward the other opposing surface; the total of end surface projection amounts of the end surfaces from the opposing surfaces is set to be a predetermined length larger than a separation distance between the opposing surfaces when the contact member is sandwiched between the opposing surfaces; and by bringing the contact member into a state of being sandwiched between the opposing surfaces, the movement of the gripping parts in proximity to each other is stopped and the end surfaces are joined together.

A process for continuous welding of a sheet of plastic material for manufacturing flexible packages, comprising a step of positioning the sheet relative to the welding device, putting ends of the sheet into contact, forming a weld by heating, pressing and cooling the ends of the sheet that are in contact, acquiring a primary temporal signal with a sensor, the primary temporal signal proportional to a thickness of the weld, transforming the primary temporal signal into a primary frequency signal and defining a low-frequency spectrum, a medium-frequency spectrum, and a high-frequency spectrum from the primary frequency signal, reconstructing a secondary low-frequency signal from the low-frequency spectrum, and determining the thickness of the weld based on the secondary low-frequency signal.

A manufacturing device is used for manufacturing a package including a resin sheet and a predetermined work wrapped with the resin sheet. The manufacturing device includes: a sealing unit that thermally welds overlapping parts of the sheet; and an inspection device that inspects a sealing quality of the sealed portion thermally welded by the sealing unit. The sealing unit makes, by the thermal welding, a thickness of the sealed portion after the thermal welding smaller than a total thickness of the overlapping parts prior to the thermal welding. The inspection device obtains thickness information on the thickness of the sealed portion and determines the sealing quality of the sealed portion based on the thickness information.

The invention relates to a device (1) for machining a workpiece (2) which preferably consist at least in sections of wood, wood material or synthetic material and/or for coating the workpiece (2) with a coating material (4), comprising: a machining device (30, 40) for machining the workpiece (2), and a conveyor (20) for affecting a relative movement between the workpiece (2) and the machining device (30, 40), a controller for controlling the conveyor (20) and the machining device (30, 40), characterized in that the device (1) further has at least one workpiece measuring device (22) which is configured to measure at least one property of the workpiece (2), in particular a property of a surface (2) of the workpiece (2) to be machined or to be coated.

A method for optimizing a welding process to produce a weld joint having a predetermined strength includes measuring a plurality of melt layer thicknesses of weld joints for a plurality of sample assemblies formed by the welding process, measuring a plurality failure loads of weld joints for the plurality of sample assemblies, each of the measured plurality of failures loads being associated with one of the measured plurality of melt layer thicknesses, selecting a first failure load from the plurality of measured failure loads responsive to determining that the first failure load corresponds to a predetermined weld strength, and selecting a first melt layer thickness from the plurality of measured melt layer thicknesses that is associated with the selected first measured failure load.

A packaging material sealing device, in particular cross seam packaging material sealing device for a vertical packaging machine, includes a first sealing jaw and at least a second sealing jaw, at least one movement unit for actuating the two sealing jaws along a sealing direction, and at least one control unit. In at least one operating state the control unit controls a rotation of the two sealing jaws relative to a transport direction of a packaging material. At least two guiding rails of the movement unit for moving the two sealing jaws along at least the sealing direction each have clearance with respect to their bearings in order to allow rotation of the two sealing jaws relative to the transport direction.

A packaging material sealing device includes a first sealing jaw and at least a second sealing jaw and at least one movement unit, which includes a first actuator and at least a second actuator for actuating the two sealing jaws along a sealing direction, and at least one control unit. In at least one operating state, the control unit controls the two actuators for setting an asymmetrical sealing force for the two sealing jaws.