Laminated film and bag
AssigneeSumitomo Chemical Company, Limited
InventorsFumito Urano, Toshihiko Manami, Shingo Katayama
Life of this patent
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Abstract
An object is to provide a laminated film which contains a recycled resin, has a relatively excellent appearance, and has a relatively small damage property, and a bag containing the laminated film. The laminated film contains three or more resin layers including at least one inner layer and two surface layers. The at least one inner layer contains a recycled resin composition containing a recycled resin and an antioxidant, and the content of the antioxidant is 100 ppm by mass to 2000 ppm by mass with respect to the recycled resin composition. The two surface layers contain an unused resin.
Claims14
A laminated film comprising three or more resin layers including at least one inner layer and two surface layers, wherein
- the at least one inner layer contains a recycled resin composition containing a recycled resin and an antioxidant, and a content of the antioxidant is 100 ppm by mass to 2000 ppm by mass with respect to the recycled resin composition,
- wherein the recycled resin comprises a polymer containing a monomer unit derived from at least one selected from the group consisting of ethylene, propylene, and α-olefin having 4 to 12 carbon atoms;
- wherein the antioxidant is a phosphorus-based antioxidant or a phenol-based antioxidant selected from 2,6-di-t-butyl-4-methylphenol (BHT), n-octadecyl-3-(3,5-di-t-butyl-4-hydroxyphenyl) propionate, pentaerythrityl-tetrakis [3-(3,5-di-t-butyl-4-hydroxyphenyl) propionate], 1,3,5-tris(3,5-di-tert-butyl-4-hydroxybenzyl) isocyanurate, 1,3,5-trimethyl-2,4,6-tris(3,5-di-t-butyl-4-hydroxybenzyl) benzene, and 3,9-bis[2-{3-(3-t-butyl-4-hydroxy-5-methylphenyl) propionyloxy}-1,1-dimethylethyl]-2,4,8,10-tetraoxaspiro [5⋅5] undecane and
- the two surface layers contain an unused resin;
- and wherein the laminated film exhibits improved scratch resistance according to JIS K7125-1987 relative to an analogous laminated film comprising an unused resin composition as an inner layer.
Dependencies are inferred from the claim text.