| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a stretch film having excellent stretchability and having a frost-tone appearance, especially a stretch film having a frost-tone appearance of a texture different from those of conventional ones. <P>SOLUTION: The stretch film 2 includes a substrate layer 21 consisting of a layer (layer A), containing a styrene-diene-based copolymer and/or a hydrogenated styrene-diene-based copolymer with a styrene content of 10 wt.% or more and less than 50 wt.%, and a layer (layer B), containing an ethylene-vinyl acetate-based copolymer with a vinyl acetate content of 26-50 wt.%; and a surface layer 22 consisting of a layer (layer C) disposed on at least one side of the substrate layer 21 and containing a polystyrene-based polymer in a styrene content of ≥65 wt.%, or a layer (layer D) containing a polypropylene-based polymer in a propylene content of ≥80 wt.%. The ratio of the thickness of the substrate layer to that of the layer C is 5:1 to 200:1, and the ratio of the thickness of the substrate layer to that of the layer D is 2:1 to 200:1. <P>COPYRIGHT: (C)2013,JPO&INPIT |
