Whether it's called UV stabilized, UV inhibited, or UV resistant - all of these terms refer to film that has been treated with UVI. UV stabilized stretch wrap film works very similar to the way to sunscreen protects your skin. This film has an additive that protects the plastic from breaking down under UV light.
Normal stretch film is engineered from polyethylene plastic that quickly degrades whenever it is exposed to UV light. This degradation results in the plastic stretch wrap losing it's cling ability and stretch ability, which makes the film virtually ineffective.
Similar to regular film, UV stabilized stretch wrap film is clear. The additive is actually added during the manufacturing of the film. Once added, the UV inhibitors may be able to protect films anywhere from nine months up to a year from premature breakdown — depending on the number of revolutions and the amount of stretch wrap used.
Unless specifically treated, most plastics will begin to deteriorate in direct sunlight. Overtime, the physical composition of the film will begin to change, going from yellowing to chalking to discoloration to the complete breakdown.
In addition, exposure to UV rays also weakens the strength and holding ability of the film. However, UV stabilized stretch wrap films are specifically treated during the film extruding process to significantly slow the breakdown of the film.
Key Stretch Film Facts
1. The majority of stretch wrap films will absorb particular UV wavelengths, which causes them to chemically degrade.
2. Most standard stretch films will degrade within several months of UV exposure.
3. The degradation of stretch film is visible featuring, chalking, yellowing, discoloration, and ultimately decomposition.
4. Unless your stretch film has a UV inhibitor additive, it will degrade in less than a year with continuous sun exposure.
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