| 摘要 |
PROBLEM TO BE SOLVED: To improve weather resistance and heat insulation by laminating at least three layers of films using polyolefin resin obtained by adding a hindered amine compound and a specific amount of an inorganic compound of the specific formula. SOLUTION: The agricultural multilayer film comprises at least an inner layer X, an intermediate layer Y and an outer layer Z, in which an inorganic compound A selected from the formula M+21-xAlx(OH)2(An-)x/2.mH2O, and the formula [Al2Li(OH)6]2(An-).mH2O, and an inorganic compound B selected from the formula [Al2(Li1-x.M2+x)(OH)6]2(SiyO22y+1)1+x.mH2O, and the formula M2+1-XAlX(OH)2(SiyO22y+1)x/2.mH2O, and a hindered amine compound are added. Adding ratios XA, XB and ZA, ZB of the compounds A, B to the layers X, Z are XA>XB, and ZA>ZB. The adding ratios YA, YB of the compounds A, B to the layer Y are YA<YB.
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