| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an agricultural film formed of a polyolefin based resin which can maintain its wavelength conversion effect even when it is stretched out at outdoor for a long period of time and in which a fluorescent substance is properly dispersed. <P>SOLUTION: The agricultural multilayer film has a laminated structure with three or more layers having at least an outer layer, an intermediate layer and an inner layer and is formed of a polyolefin based resin composition. It contains a specific fluorescent substance of 0.1-5 wt.% in terms of the polyolefin based resin composition in the whole layers of the film. In the agricultural multilayer film, when the content rate (wt.%) of the fluorescent substance in the intermediate layer is X, the content rate (wt.%) of the fluorescent substance in the inner layer is Y and the content rate (wt.%) of the fluorescent substance in the outer layer is Z, X>Y and X>Z. <P>COPYRIGHT: (C)2013,JPO&INPIT |
