Stretch film thickness is measured using a unit called gauge, which is expressed in mils (thousandths of an inch) or microns (millionths of a meter).
Here's a more detailed explanation:
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Gauge: This is the most common term used in the stretch film industry to refer to thickness. A higher gauge number indicates a thicker film.
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Mils: One mil is equal to 0.001 inches (one-thousandth of an inch). Stretch film thickness is often specified in mils.
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Microns: One micron is equal to 0.000001 meters (one-millionth of a meter). There are 25.4 microns in one mil. So, to convert from mils to microns, you multiply by 25.4.
Example:
A stretch film described as "1 mil" thick is also equivalent to 25.4 microns.
Why is thickness important?
The thickness of the stretch film directly affects its strength, tear resistance, and ability to secure loads. Thicker films are generally used for heavier or more unstable loads that require greater holding force.
Common Stretch Film Gauges and Uses:
| Gauge (mil) | Gauge (Microns) | Typical Usage |
|---|---|---|
| 0.6 - 0.8 | 15.24 - 20.32 | Light loads, uniform pallets |
| 0.8 - 1.0 | 20.32 - 25.4 | Medium loads, some irregular shapes |
| 1.0 - 1.5 | 25.4 - 38.1 | Heavy loads, irregular shapes, demanding applications |
Therefore, when assessing stretch film, remember gauge refers to the thickness and relates directly to durability, resistance, and suitability for load type.
