▎ 摘　　要

NOVELTY - Multifunctional shed film masterbatch comprises 100 pts. wt green biodegradable plastic or polymer resin, 5-20 pts. wt slow release agent, 1 pt. wt anti-fog agent, 2-8 pts. wt anti-dripping agent, or 100 pts. wt green biodegradable plastic or polymer resin, 5-20 pts. wt sustained release agent modified by anti-dripping agent and 1 pt. wt anti-fogging agent. USE - The masterbatch is useful in agricultural film, mulch film and food packaging film, and used for preparing multifunctional shed film from blown film of masterbatch (all claimed). ADVANTAGE - The masterbatch is environmentally-friendly, improves the anti-dripping and anti-fog performance of shed film, increases the light transmittance, and does not affect thermal stability of shed film. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing multifunctional shed film masterbatch, involving blending components at 130-150 degrees C, extruding and granulating the double screws to obtain multi-functional shed film master batch, performing pre-irradiation or plasma treatment on biodegradable plastic or polymer resin to obtain modified green biodegradable plastic or polymer resin, blending modified green biodegradable plastic or polymer resin with remaining preparation raw materials at 130-150 degrees C, and performing twin-screw extrusion granulation to obtain multi-functional greenhouse film master batch.