Protective film and sheet
AssigneeToppan Printing Co., Ltd.
InventorsDaisuke Murata, Toru Ookubo
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Abstract
A protective film containing a transparent polyolefin resin layer with improved or even superior weather resistance, and a sheet using the protective film. A protective film according to the present embodiment includes at least a transparent polyolefin resin layer. The transparent polyolefin resin layer contains a hindered amine light stabilizer represented by general formula (I) below in a range of 0.05 parts by mass or more and 5 parts by mass or less with respect to 100 parts by mass of a transparent olefin resin included in the transparent polyolefin resin layer. (In general formula (I), R is an alkyl group having 1-18 carbon atoms, or a cycloalkyl group having 5-8 carbon atoms.)
Claims4
A protective film, consisting of:
- a transparent polyolefin resin layer;
- and a surface protective layer formed on the transparent polyolefin resin layer;
- wherein the surface protective layer is an outermost layer of the protective film;
- wherein the transparent polyolefin resin layer consists of a polyolefin resin and a hindered amine light stabilizer represented by general formula (I) below in a range of 0.05 parts by mass or more and 5 parts by mass or less with respect to 100 parts by mass of the polyolefin resin of the transparent polyolefin resin layer, wherein in general formula (I), R is an alkyl group having 1-18 carbon atoms, or a cycloalkyl group having 5-8 carbon atoms,
- wherein the polyolefin resin of the transparent polyolefin resin layer does not contain an ethylene-vinyl acetate copolymer.
Dependencies are inferred from the claim text.