guys, could you help me to explain the defference between "film shrinkage force" and "film contraction force",the film here is thermo shrinkage plastic film.
Re: Film Shrinkage Force vs. Film Contraction Force
12/10/2008 1:16 PM
I am not certain that there is much difference---apparently someone is giving you the terms without a definition.
We usually thing of the shrinkage force as what happens when we apply heat to a film that wraps a pallet of product. The heat causes the film to stretch tightly.
The alternate film wrap without heat is to prestretch the film and then using power winders to wrap the pallet of product. This film in its stretched mode wants to return to its original relaxed state and thus wants to contract.
Good lucki