Special Treatment

Problem: Blocking

Solution: Blocking, or when a roll cannot be unwound easily or at all, is often caused by reverse treatment issues, according to Guzzardo.

The solution lies in a properly laid-out machine, Guzzardo said. Three things to consider are:

1) Be sure there's "enough electrode surface to avoid local overheating of web material, which creates reverse treatment; 2) "Incorporate a pressure roller, as entrapped air between the film and treatment roller creates reverse treatment; and