What are the consequences of Over/Under Treatment of the Film?

What are the consequences of Over/Under Treatment of the Film?

For better post-treatment results of the film, surface energy should be adequately optimized. In case of over treatment, which is quite possible in case of PE substrates during the extrusion process, blocking of the film may take place which would then hamper the subsequent unwinding and tension controlling process. Also over treatment reduces the heat seal ability of the film in case the treated side need to be sealed with some other substrate. In case of under treatment, the film may have low wet ability and correspondingly low dyne levels which would then cause ink peeling in case of printing or delamination in case of lamination process.