7 Machines, installations, and machine and installation parts, namely, trimming knives, circular knives, rotary knives, pressing rollers, deflection rollers, embossing parts, actuators and sensors for web guiding systems, radio frequency generators, inductors and cables for electromagnetic induction welding units, actuators and sensors for spooling units, web tension control systems consisting primarily of motors, gears, deflection rollers, and also including force sensors, torque sensors, displacement sensors, web width control systems consisting primarily of motors, cutting devices, trimming knives, and also including edge detection sensors, width sensors, camera systems, web splicing systems consisting primarily of web cutting units, web joining units, movable web feeding and unfeeding units, web clamping units, and web folding systems consisting primarily of motors, chains, gears, and also including web guiding parts, all for the production and packaging of plastic tubes; Machines and lines composed thereof for the production of plastic materials, namely, die casting machines; Electric welding machines for use with plastic materials; Electric welding machines for use with laminated plastic films; Electric welding machines for welding plastic and multi-layered laminates; Electromagnetic induction welding machines for welding plastics and multi-layered laminates; Machines and machine tools for cutting materials, namely, laminated plastic films