Methodology to develop optimal welding processes of thermoplastic materials (EVA AND EVA / EVOH) using the high frequency welding system (HF)

Abstract

The use of plastic materials has increased enormously in recent years. Currently there are lot of industrial and domestic companies that manufacture their products using the process of welding of thermoplastics with the high frequency welding (HF) technology. But when initializing their processes to manufacture products, they make the adjustments with the "trial and error" method until obtaining the optimal parameters with which the manufacturing equipment will be operated. This entail a series of expenses that impact the costs, quality of the product and damage to the environment due to the waste of discarded products. The production by means of processes of welding of thermoplastics using the system of high frequency (HF), is an integral part of the majority of the main processes of manufacture. The purpose of the methodology is to propose the development of optimal welding processes of thermoplastic materials (EVA and EVA / EVOH) using the high frequency welding system (HF), providing a benefit of reducing or eliminating the loss of time, resources, waste of materials, unnecessary expenses, obstacles and errors, reaching the goal of the process. The result of the answer show that the variable of the pressure has a Cpk of 1.67 (equivalent to a 5 Sigma process). In addition, the methodology allows to obtain the operational parameters of the thermoplastic welding process in control, reliable and predictable. It allows to have a process that can produce quality products to remain competitive in a growing global market.