Pallet Wrapper dispenser,handle roll film dispenser

Detailed Product Description

pallet stretch wrap dispensor

Prestretch is the process that allows stretch film to be stretched before (pre) being applied to a load.  The film threads past two rollers (Primary and Secondary) in which the second rollers' rotational speed is faster than the first, thus stretching the stretch film between the two.  As you stretch the film , the tensile strength of the film increases so it is significantly (2X) stronger once you pass the point of permanent deformation.

 FILM MEMOR  The memory of the film wants to return it to its initial form .However the more you prestretch the lower the memory . (which is  why Bi-stretch did not work) If the film is applied to a load with no film force, minutes later you can observe that the film has tightened due to the film elastic memory as it tries to return .It is this film memory (like an elastic band on your hand) that differentiates stretch film from other means of unitizing . Settling that occurs during shipment can loosen other methods of unitizing where stretch film memory takes up the slack and continues to secure the load . Film Memory is the single most important reason for prestretching film!