Cast Stretch Film- A stretch film derived from the cast extrusion process. Less manufacturing costs allow cast stretch film to be the more widely used stretch film.
Blown Stretch Film- A stretch film derived from the blown extrusion process.
Bottom Wraps- The wraps a stretch wrap machine uses to apply film to the bottom section of the load. Forming a strong bottom wrap will help to ensure load stability.
Cling- Allows the film to stick to itself and not the product. Some films have one sided cling and others have two sided cling.
Co-extrusion- Extruding two or more materials through a single die to enable the two materials to merge together.
Dart Drop- A commonly used test to measure puncture strength of stretch film. It is conducted by dropping a semi-circular shaped object onto the film.
Elastic Recovery-The ability of stretch film to recover to its original shape after being stretched.
Elmendorf Tear- Another common test used for stretch film and other products to measure tear resistance.
Extruder- Equipment used to change solid polymers into molten polymers.
Film Feed- In a stretch wrap machine, it is the speed at which stretch film is supplied to the load.