Written October 16, 2019


Irregular waves running across the laminated web.


  • Check the tension on the supply mandrels. There may not be enough tension for the type of film.
  • The pressure adjustment for the laminating and pull rolls is out of adjustment.
  • The cooling fans may not be working.
  • The heat is set too high.
  • The rubber laminating rolls or the heat shoes are not clean.
  • Make sure the film is threaded properly.