Stretch film use

Permissible stretching of stretch film
The allowable stretch refers to the large stretch that can be applied to maintain various properties under the condition of use. The allowable stretch varies by application. The larger the allowable stretch, the less the amount of stretch film and the lower the packaging cost.



Stretch film
Stretching is the ability of a film to elastically stretch after being stretched. The increased longitudinal stretch will eventually make the stretch film thinner and shorter in width. While longitudinal stretching is beneficial, overstretching is often undesirable. Because this will make the wrapping film thinner, easier to wrap, and at the same time increase the tension applied to the package.

Stress Retention of Stretch Films
Stress retention refers to the degree to which the tension applied to the stretch film can be maintained during the stretch wrapping process.