According to the different structures of the film frame, the stretch film packaging machine can be divided into two types: resistance stretching type and pre-stretching type. The resistance stretching type mainly relies on the resistance between the packaging item itself and the film frame to stretch the stretching film, and then wraps the goods; while the pre-stretching type uses the roller in the film frame to wind through the speed difference. machine, and then wrap it on the package. So what are the advantages of the pre-stretch stretch film packaging machine than the resistance stretch stretch film packaging machine?
1. Save stretch film. We all know that stretch film is a consumable for wrapping packaging machines, and its usage determines the packaging cost. Due to the special film frame structure, the pre-stretch stretch film packaging machine can stretch the stretch film up to 300%, which greatly reduces the use of stretch film and saves packaging costs.
2. the effective film exhibition. We mentioned earlier that the resistance stretch wrapping film packaging machine is stretched and wound by the resistance of rotation, but the disadvantage of this winding method is that when the original wide film is wound on the object, the film width will be narrowed and the film will increase in disguise. The amount of stretch film used. The pre-stretch stretch film packaging machine uses the active roller on the film frame to unfold the film well and maintain the original film width, so that the stretch film can be used to package items to the maximum extent.
3. The wrapping effect is good and the scope of application is wide. The resistance stretch wrapping machine cannot wrap lighter items, while the pre-stretch wrapping machine can not only wrap items of various weights, but even irregular items have a good wrapping effect. Therefore, from the scope of application, the pre-stretch stretch film packaging machine has greater advantages.
