U V I Polyethylene Film
Polyethylene film degrades when exposed to the ultraviolet (UV) rays in sunlight. To prevent disintegration during service life, an additive known as ultraviolet inhibitor (UVI) must be added to the polyethylene base resin.
UVI does not prevent the sun’s rays from penetrating the film; UVI only delays the oxidization of film stored outdoors in sunlight. The best ultraviolet inhibitor is iron oxide (FEO2) or rust which is not practical when clarity is a requirement.
Film is often ordered with a loose specification of a number of days of UV protection such as 30 or 60 days. This is of course dependent on the environment and latitude.
We have films which can endure for practical purposes one year of outdoor storage provided we know the service life conditions.
Ultraviolet light is an initiator of oxobiodegradable films.
UVI does not prevent the sun’s rays from penetrating the film; UVI only delays the oxidization of film stored outdoors in sunlight. The best ultraviolet inhibitor is iron oxide (FEO2) or rust which is not practical when clarity is a requirement.
Film is often ordered with a loose specification of a number of days of UV protection such as 30 or 60 days. This is of course dependent on the environment and latitude.
We have films which can endure for practical purposes one year of outdoor storage provided we know the service life conditions.
Ultraviolet light is an initiator of oxobiodegradable films.