Charge formation in PE/Polymer laminates

PE (polyethylene)/PE laminates were selected as test specimens to simulate the interface of blends, and their charge formation characteristics have been investigated. Charge behavior in PE/polymer laminates is shown to differ depending on the type of laminates. In laminates with PE and EVA, the charge tends to be trapped in the PE component and migrate through the interface relatively freely. In laminates with PE/ionomer, however the charge is trapped dominantly. It was also found that the nature of the interface may be modified to make the charge migrate through the interface. The charge accumulation characteristics of the laminates are governed by the type of polymer in the middle layer and do not resemble those of the parent polymers