| 摘要 |
PROBLEM TO BE SOLVED: To provide agricultural polyolefine multilayer film substantially completely blocking ultraviolet light having a wide wavelength area to the extent to expect ultraviolet light-shielding effect, causing no decrease in ultraviolet light-absorbing performance for a long time, and having a low level of environmental effect when used. SOLUTION: The agricultural polyolefine multilayer film has the following structure: either of the layers of the multilayer film having at least three layers and an entire thickness of less than 0.15 mm, has 3 wt.% or more of an inorganic compound having at least one atom selected from Si, Al, Mg, Ca, and Li as a constituent in all layers of the film; either of the layers of the multilayer film has a benzotriazole ultraviolet absorber having one benzotriazole scaffold in at least one kind of a monomolecule, and a benzotriazole ultraviolet absorber having two benzotriazole scaffolds in at least one kind of a monomolecule; and the ultraviolet light of 300-380 nm is substantially shielded completely. COPYRIGHT: (C)2009,JPO&INPIT
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