Continuous Plastic Film Welding with Synchronized Teflon Belts

The patent implements continuous welding by replacing the discontinuous cycle process with a continuous movement system. The Teflon belts continuously convey the film through the welding zone, and the heating elements continuously apply heat, eliminating the start-stop cycle nature of traditional welding and achieving uninterrupted weld seam formation.

The patent introduces Teflon belts as intermediary elements between the heating elements and the film. These belts serve as a mediating medium that transfers heat uniformly to the film while preventing direct contact between the heating elements and the film, thereby improving weld quality without requiring complex direct heating mechanisms.

The patent achieves continuous welding operation where the Teflon belts and film move continuously through the welding zone without interruption. This continuous operation eliminates idle time between welds, significantly increasing productivity compared to discontinuous cycling methods.

The patent replaces complex mechanical positioning and clamping systems with a simpler belt-conveyance system. The Teflon belts automatically carry the film through the welding zone, eliminating the need for complex mechanical feeders, clamps, and positioning devices that would increase device complexity.

The Teflon belts act as intermediary elements that directly contact both the film and the heating elements. They provide a smooth, non-stick surface that prevents film adhesion to heating elements while uniformly distributing heat, resulting in clean, uniform weld seams with improved appearance.

The patent uses Teflon belts to ensure homogeneous heat distribution across the weld zone. The belts provide uniform thermal contact between the heating elements and the film, eliminating hot and cold spots that would cause inconsistent weld appearance, thereby achieving homogeneous weld quality.