![]() Depending on the desired effect the bonding agent is applied to one or both sides. This is desirable to allow the layers of stretch film applied to bond to the previous layers effectively creating a single wall of stretch film. Stretch film extruded by the cast method typically have greater tear resistance, greater aesthetic values and are quiet to unwind, which is not typically found in film manufactured by the blown method.Ĭling (single side - two sided - differential): A bonding agent added to stretch film to increase the stickiness quality of the film. Cast film typically is quieter, more transparent, and glossier than blown film because of this process. This type of blown stretch film generally costs more to make because the output per hour is less than with cast films.Typically blown film is a tougher but noisier film than cast films.Ĭast stretch wrap: Molten plastic extruded over full width of a die, then cooled and crystallized over a drum. As this formed bubble finishes the process of being transformed into rolls of stretch film, it is cooled by the surrounding air. The heated resin is forced through the die and then blown out vertically into a bubble. Beads of resin are fed through a heated machine that has a circular die. Banding packaging makes it much easier to ensure the product will reach its destination in good condition.īlown stretch wrap: A film extruded by the blown balloon type inflation system. Banding is used when loads need to be completely secure. Here are some of the most common terms used, as well as a downloadable sheet with additional terms available here.īanding: The act of applying multiple wraps of stretch film to a certain area of a load to reinforce and/or unitize a number of layers or products. When it comes to stretch wrap, it's critical to know some basic terminology. Learn more about stretch wrap with our in-depth Ultimate Stretch Wrap Guide. ![]()
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