Light diffraction layer laminated sheet and method for producing card

Abstract

Provided are: a light diffraction layer laminated sheet which enables easy production of a card that has a light analysis structure; and a card. A light diffraction layer laminated sheet material ( 20 A) which forms a part of a laminated structure of a card ( 1 ) by being laminated on top of a card base material ( 10 ). This light diffraction layer laminated sheet material ( 20 A) is provided with: a transparent sheet layer ( 20 ); a hologram layer ( 22 ) that has a contour smaller than the contour of the transparent sheet layer ( 20 ) and is laminated on one surface, which is the upper surface, of the transparent sheet layer ( 20 ); and an HS layer ( 21 ) that bonds the transparent sheet layer ( 20 ) and the hologram layer ( 22 ) with each other.

1 . A light diffraction layer laminated sheet that is laminated on an upper side of a card substrate to form a part of a laminated structure of a card, comprising:
 a transparent sheet layer;   a light diffraction layer configured to have an outer shape smaller than an outer shape of the transparent sheet layer and to be laminated onto an upper side which is one surface side of the transparent sheet layer; and   a lower adhesive layer that bonds the transparent sheet layer and the light diffraction layer together.   
     
     
         2 . The light diffraction layer laminated sheet according to  claim 1 , further comprising:
 a print sheet layer, which has been undergone printing, configured to be laminated onto the light diffraction layer; and   an upper adhesive layer that is provided on the light diffraction layer, such that the light diffraction layer and the print sheet layer are bonded together.   
     
     
         3 . The light diffraction layer laminated sheet according to  claim 2 ,
 wherein the lower adhesive layer and the upper adhesive layer are thermoplastic members, respectively and the upper adhesive layer is configured to have a higher temperature at which adhesiveness thereof appears than a temperature of the lower adhesive layer at which adhesiveness thereof appears.   
     
     
         4 . The light diffraction layer laminated sheet according to  claim 2 , wherein the upper adhesive layer comprises a thermoplastic resin sheet, and the lower adhesive layer comprises a thermoplastic adhesive. 
     
     
         5 . The light diffraction layer laminated sheet according to  claim 1 , further comprising a print layer that is directly printed immediately on the light diffraction layer. 
     
     
         6 . The light diffraction layer laminated sheet according to  claim 1 ,
 wherein the light diffraction layer comprises a Lippmann-type hologram.   
     
     
         7 . A method for producing a card using the light diffraction layer laminated sheet according to  claim 2 ,
 wherein the card is produced through a multi-face layout and the method comprising steps of:   laminating a light diffraction layer laminated sheet material, which is laminated with a plurality of light diffraction layers, on a substrate sheet material forming a plurality of card substrates; and   laminating a print sheet material forming a plurality of print sheet layers onto the light diffraction layer laminated sheet material.   
     
     
         8 . A method for producing a card using the light diffraction layer laminated sheet according to  claim 5 ,
 wherein the card is produced through a multi-face layout and the method comprising steps of:   laminating a light diffraction layer laminated sheet material, which is laminated with a plurality of light diffraction layers, onto a substrate sheet material forming a plurality of card substrates; and   directly printing immediately on the light diffraction layer.   
     
     
         9 . The light diffraction layer laminated sheet according to  claim 3 ,
 wherein the upper adhesive layer comprises a thermoplastic resin sheet, and the lower adhesive layer comprises a thermoplastic adhesive.   
     
     
         10 . The light diffraction layer laminated sheet according to  claim 2 , wherein the light diffraction layer comprises a Lippmann-type hologram. 
     
     
         11 . The light diffraction layer laminated sheet according to  claim 3 , wherein the light diffraction layer comprises a Lippmann-type hologram. 
     
     
         12 . The light diffraction layer laminated sheet according to  claim 4 , wherein the light diffraction layer comprises a Lippmann-type hologram. 
     
     
         13 . The light diffraction layer laminated sheet according to  claim 5 , wherein the light diffraction layer comprises a Lippmann-type hologram. 
     
     
         14 . A method for producing a card using the light diffraction layer laminated sheet according to  claim 3 ,
 wherein the card is produced through a multi-face layout and the method comprising steps of:   laminating a light diffraction layer laminated sheet material, which is laminated with a plurality of light diffraction layers, on a substrate sheet material forming a plurality of card substrates; and   laminating a print sheet material forming a plurality of print sheet layers onto the light diffraction layer laminated sheet material.   
     
     
         15 . A method for producing a card using the light diffraction layer laminated sheet according to  claim 4 ,
 wherein the card is produced through a multi-face layout and the method comprising steps of:   laminating a light diffraction layer laminated sheet material, which is laminated with a plurality of light diffraction layers, on a substrate sheet material forming a plurality of card substrates; and   laminating a print sheet material forming a plurality of print sheet layers onto the light diffraction layer laminated sheet material.