Light-transmitting conductive laminate and light-transmitting conductive molded body using same
Provided is a light-transmitting conducive laminate which is moldable and has good designability. A light-transmitting conductive laminate is provided in which at least a surface skin material and a transparent conductive base are sequentially laminated from the input side.
1. A light-transmitting conductive laminate at least comprising a surface material and a transparent electrically conductive substrate laminated in this order from an outer side of the light-transmitting conductive laminate,
wherein the surface material comprises a layer consisting of at least one member selected from the group consisting of woven fabric, knitted fabric, nonwoven fabric, synthetic leather, and artificial leather and a surface of the surface material has been napped,
wherein the light-transmitting conductive laminate has a total light transmission of at least 20%,
wherein the light-transmitting conductive laminate has a visual recognizability of see-through letters and symbols of the surface material, as determined by a light arranged on a back surface of the transparent conductive substrate to display a design on a surface of the surface material by illuminating the light,
wherein the surface material has an anti-see-through property of at least 90%, where anti-see-through property (%)=(lightness of the light-transmitting conductive laminate in the use of a black tile)/(lightness of the light-transmitting conductive laminate in the use of a white tile)×100, and
wherein a display mark is printed on the transparent conductive substrate.
2. A light-transmitting conductive laminate according to claim 1 wherein the surface material contains a synthetic fiber having a single fiber fineness of up to 2 dtex and a polymer elastomer.
3. A light-transmitting conductive laminate according to claim 1 wherein the light-transmitting conductive laminate has a surface resistance of 1 to 1000 Ω/□.
4. A light-transmitting conductive laminate according to claim 1 wherein the transparent conductive substrate contains at least one member selected from the group consisting of nanocarbon, indium-tin oxide, silver, copper, metal nano-wire, and electroconductive polymer.
5. A light-transmitting conductive molded laminate prepared by using the light-transmitting conductive laminate according to claim 1 .
6. A light-transmitting conductive molded laminate according to claim 5 wherein the transparent conductive substrate contains a nanocarbon or an electroconductive polymer.
7. A capacitive touch sensor prepared by using the light-transmitting conductive laminate according to claim 1 .
8. A method for producing the light-transmitting conductive molded laminate wherein the light-transmitting conductive laminate according to claim 1 is molded by at least one member selected from the group consisting of film insert molding, vacuum molding, three dimensional laminate molding, and thermal press molding.
9. A light-transmitting conductive laminate according to claim 1 , wherein the nonwoven fabric comprises:
(i) a natural fiber comprising cotton, linen, wool, or silk,
(ii) a polyester comprising polyethylene terephthalate, polybutylene terephthalate, polytrimethylene terephthalate, or polyethylene-2,6-naphthalene dicarboxylate,
(iii) a polyamide comprising 6-nylon or 66-nylon,
(iv) a synthetic fiber comprising polyvinyl alcohol, polyacryl, polyethylene, or polypropylene, or
(v) a combination thereof.
10. A light-transmitting conductive laminate according claim 1 , wherein the surface material has been napped, and
wherein the light-transmitting conductive laminate comprises the entire napped surface of the surface material disposed over the transparent electrically conductive substrate.
11. A light-transmitting conductive laminate according claim 1 , wherein the surface material contains a synthetic fiber having a single fiber fineness of at least 0.001 dtex and upto 1.0 dtex and a polymer elastomer, or an apparent density of at least 0.30 to 0.70 g/cm 3 .