A method for operating a tubular bag machine having a film web capable of unwinding from a supply reel, a shoulder for forming the web into a film tube, a take-off unit serving to move the tube, a longitudinal sealing device for welding the tube parallel to its transport direction by a longitudinal seam, a sealing device with jaws for producing transverse seams in the tube, a separating element for separating finished tubular bags from the tube, the machine being accelerated in a positive acceleration phase from an initial speed to a target speed when starting or being decelerated in a negative acceleration phase from the target speed to a final speed for stopping, wherein, in the positive acceleration phase and/or in the negative acceleration phase, at least one sealing parameter of the jaws for producing tubular bags changes as a function of the conveying speed of the web.

A system to re-configure an input material into an output material includes an input material feeder reconfigurable to accept and feed an input material, an output material spooler, the input material feeder re-configurable relative to the material cutter to cut the input material at a re-configurable cut angle to produce a first intermediate cut section of material, a positioning and alignment system to position and align a leading edge of the first intermediate cut section of material with a trailing edge of a second intermediate cut section of material, a welder having a configurable position to weld the first intermediate cut section of material to the second intermediate cut section of material, and a control system comprising logic to set at least intensity of the welder, a contact pressure of the welder, temperature of the weld-table surface, and a tension applied by the output material spooler.

Systems and methods to improve weld quality are described. For example, certain systems and methods described use weld quality monitoring as feedback to an ultrasonic welding process to improve weld quality. Still other systems and methods provide improvement to double sided and single sided ultrasonic welding through the use of selected multiple pulses.

Systems and methods to improve weld quality are described. For example, certain systems and methods described use weld quality monitoring as feedback to an ultrasonic welding process to improve weld quality. Still other systems and methods provide improvement to double sided and single sided ultrasonic welding through the use of selected multiple pulses.

Systems and methods to improve weld quality are described. For example, certain systems and methods described use weld quality monitoring as feedback to an ultrasonic welding process to improve weld quality. Still other systems and methods provide improvement to double sided and single sided ultrasonic welding through the use of selected multiple pulses.

A kit for fusing piping includes a plurality of couplings, each coupling having a susceptor layer concentric with a weld zone. A control unit provides a current to a wand with a handle for gripping by a user. The handle has opposing jaws mounted on the distal end, each jaw including an arcuate conductor such that the arcuate conductors form a circular inner diameter when the jaws make contact. A lever system couples to the distal end for opening and closing the jaws. The lever system includes a spring for selectively biasing the lever system in a latched position with jaws closed and an open position with the jaws open. Each coupling is sized such that the jaws will only close about the weld zone. The arcuate conductors create a fuse zone about the susceptor layer and the spring is outside the fuse zone.

A portable conveyor belt splicing apparatus is provided that includes an upper press assembly and a lower press assembly which include, respectively, upper and lower platen assemblies. The upper and lower press assemblies may each include a forced air cooling system for rapidly cooling platens of the platen assemblies. The upper and lower press assemblies may include insulating assemblies with resilient members that support the upper and lower press assemblies. The resilient members provide structural support and insulate the platens from the frame which reduces the power required to heat the platens. In one form, the apparatus includes a power supply circuit that can alternate between providing power to upper and lower heaters in response to the apparatus being connected to different types of standard power supplies. Further, the power supply circuit permits the use of a single recipe for a particular belt irrespective of the type of power supply.

A portable conveyor belt splicing apparatus is provided that includes an upper press assembly and a lower press assembly which include, respectively, upper and lower platen assemblies. The upper and lower press assemblies may each include a forced air cooling system for rapidly cooling platens of the platen assemblies. The upper and lower press assemblies may include insulating assemblies with resilient members that support the upper and lower press assemblies. The resilient members provide structural support and insulate the platens from the frame which reduces the power required to heat the platens. In one form, the apparatus includes a power supply circuit that can alternate between providing power to upper and lower heaters in response to the apparatus being connected to different types of standard power supplies. Further, the power supply circuit permits the use of a single recipe for a particular belt irrespective of the type of power supply.

A portable conveyor belt splicing apparatus is provided that includes an upper press assembly and a lower press assembly which include, respectively, upper and lower platen assemblies. The upper and lower press assemblies may each include a forced air cooling system for rapidly cooling platens of the platen assemblies. The upper and lower press assemblies may include insulating assemblies with resilient members that support the upper and lower press assemblies. The resilient members provide structural support and insulate the platens from the frame which reduces the power required to heat the platens. In one form, the apparatus includes a power supply circuit that can alternate between providing power to upper and lower heaters in response to the apparatus being connected to different types of standard power supplies. Further, the power supply circuit permits the use of a single recipe for a particular belt irrespective of the type of power supply.

A method for operating a tubular bag machine having a film web capable of unwinding from a supply reel, a shoulder for forming the web into a film tube, a take-off unit serving to move the tube, a longitudinal sealing device for welding the tube parallel to its transport direction by a longitudinal seam, a sealing device with jaws for producing transverse seams in the tube, a separating element for separating finished tubular bags from the tube, the machine being accelerated in a positive acceleration phase from an initial speed to a target speed when starting or being decelerated in a negative acceleration phase from the target speed to a final speed for stopping, wherein, in the positive acceleration phase and/or in the negative acceleration phase, at least one sealing parameter of the jaws for producing tubular bags changes as a function of the conveying speed of the web.