- blown stretch film
- cast stretch film
- power pre stretch
Stretch film main characteristics are strength, stretchability and stickiness.
There are two different types of stretch film, blown and cast. Blown film is manufactured by a process called mono extrusion, which results in one layer of film and is particularly suitable for stretching to very high levels. Cast film is manufactured by a process called co-extrusion, which gives a multi-layer film. This type of film can be produced with different characteristics in each layer to give different benefits i.e. puncture resistance, cling etc.
In general, blown film tends to have a milky or hazy appearance and is popular in hand wrapping due to its stickiness.
Cast films have high clarity and this is important where product needs to be seen or bar codes have to be scanned through the wrap. Cast films can be unwound with very low noise level whereas Blown film will tend to be quite noisy. Cast film is usually preferred for semi-automatic pallet wrappers because it is low noise and the stickiness of blown film can be detrimental to the working of the machine. Stretch film is available in hand rolls and machine rolls
Alternatively, stretch film can be used to secure and protect your palletised goods. Dispensers from simple low cost hand tensioners up to power pre-stretch turntable wrappers are offered.