1. Requirements for Agricultural Plastics
Agricultural greenhouse films must withstand extreme solar ultraviolet radiation, seasonal temperature fluctuations, pesticide exposure, and severe wind loads over multi-year lifespans (typically 3 to 5 years).
2. Wide-Web Extrusion Line Architecture
Producing wide agricultural film (unfolded widths from 6 meters up to 18 meters) requires massive haul-off towers reaching heights of 15 to 22 meters. Ashal S-Wide series lines incorporate heavy structural steel tower frames with motorized gusseting boards.
3. UV Stabilizers & Anti-Fog Additive Chemistry
Unprotected polyethylene degrades rapidly under solar UV radiation. Formulating long-life greenhouse film requires Hindered Amine Light Stabilizers (HALS) combined with Nickel quencher UV absorbers. Anti-drip and anti-fog surfactants migrate to the film surface, reducing condensation droplet surface tension to ensure light transmission.