Transparent resin film, decorative material, and method for producing decorative material
The present invention provides a transparent resin film that has excellent embossability and is capable of reducing or preventing air entrainment to provide high design quality, a decorative material including the transparent resin film, and a method for producing a decorative material. The present invention relates to a transparent resin film to be laminated on a substrate including a picture layer, the transparent resin film including at least a base layer and a top layer sequentially from a side to be laminated on the substrate, the transparent resin film having a pattern of protrusions and depressions on a side opposite to the side to be laminated on the substrate, the base layer having a lower softening temperature than the top layer.
1 . A transparent resin film to be laminated on a substrate including a picture layer,
the transparent resin film comprising at least a base layer and a top layer sequentially from a side to be laminated on the substrate,
the transparent resin film having a pattern of protrusions and depressions on a side opposite to the side to be laminated on the substrate,
the base layer having a lower softening temperature than the top layer, and
the top layer consisting of thermoplastic resins.
2 . The transparent resin film according to claim 1 ,
wherein the base layer has a softening temperature of 100° C. or higher and 150° C. or lower.
3 . The transparent resin film according to claim 1 ,
wherein the top layer has a softening temperature of 130° C. or higher and 160° C. or lower.
4 . The transparent resin film according to claim 1 , having a maximum height Rz defined in JIS B 0601 (2001) of 80 μm or less on the side to be laminated on the substrate.
5 . The transparent resin film according to claim 1 , further comprising a surface protective layer on an opposite side of the top layer to the base layer.
6 . The transparent resin film according to claim 5 ,
wherein the surface protective layer contains a flame retardant.
7 . The transparent resin film according to claim 6 ,
wherein the flame retardant is at least one selected from the group consisting of a phosphinic acid metal salt-based flame retardant, a phosphazene-based flame retardant, and NOR hindered amine-based flame retardant.
8 . A decorative material comprising:
a substrate including a picture layer; and
the transparent resin film according to claim 1 laminated on the substrate.
9 . A method for producing a decorative material, comprising:
laminating the transparent resin film according to claim 1 on a substrate including a picture layer at a temperature not lower than the softening temperature of the base layer and not higher than the softening temperature of the top layer.
10 . A method for producing a decorative material comprising a substrate including a picture layer and the transparent resin film according to claim 1 sequentially, the method comprising:
forming a transparent adhesive layer on a side to be laminated on the picture layer of the transparent resin film; and
bonding the transparent resin film and the picture layer with the transparent adhesive layer.
11 . The transparent resin film according to claim 2 ,
wherein the top layer has a softening temperature of 130° C. or higher and 160° C. or lower.
12 . The transparent resin film according to claim 2 , having a maximum height Rz defined in JIS B 0601 (2001) of 80 μm or less on the side to be laminated on the substrate.
13 . The transparent resin film according to claim 2 , further comprising a surface protective layer on an opposite side of the top layer to the base layer.
14 . A decorative material comprising:
a substrate including a picture layer; and
the transparent resin film according to claim 2 laminated on the substrate.
15 . A method for producing a decorative material, comprising:
laminating the transparent resin film according to claim 2 on a substrate including a picture layer at a temperature not lower than the softening temperature of the base layer and not higher than the softening temperature of the top layer.
16 . A transparent resin film to be laminated on a substrate including a picture layer,
the transparent resin film comprising at least a base layer and a top layer sequentially from a side to be laminated on the substrate,
the transparent resin film having a pattern of protrusions and depressions on a side opposite to the side to be laminated on the substrate,
the base layer having a lower softening temperature than the top layer,
the top layer consisting of thermoplastic resins and one or more additives,
wherein the one or more additives are at least one selected from the group consisting of colorants, flame retardants, fillers, matting agents, blowing agents, lubricants, antistatic agents, antioxidants, ultraviolet absorbers, light stabilizers, radical scavengers, and soft components,
wherein the flame retardant, when present, is at least one selected from the group consisting of phosphinic acid metal salt-based flame retardant, phosphazene-based flame retardant, NOR hindered amine-based flame retardant, halogen-based flame retardant, antimony-based flame retardant, metal hydroxide-based flame retardant, and phosphoric acid ester-based flame retardant,
and wherein the filler, when present, is an inorganic filler having a polar group on its surface.