US2017157971A1PendingUtilityA1

Volume hologram sheet to be embedded, forgery prevention paper, and card

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Assignee: DAINIPPON PRINTING CO LTDPriority: Jan 19, 2010Filed: Feb 17, 2017Published: Jun 8, 2017
Est. expiryJan 19, 2030(~3.5 yrs left)· nominal 20-yr term from priority
Inventors:Nobuko OikawaMinoru Azakami
B32B 37/12B32B 2037/1253G03H 2240/50B32B 2425/00B32B 2310/14D21H 21/42B29K 2633/00G03H 1/0248C09D 11/02G09F 3/0292B29C 65/8223C09J 7/35C09D 133/14B32B 2305/347B42D 25/41B29L 2017/001B42D 25/328C09D 11/037B42D 25/475B29C 65/483B29C 65/482B32B 2367/00B29C 65/48B32B 2310/0843B29C 66/45B29C 65/485C09D 11/106B29C 66/712B29C 66/72328B42D 25/46G03H 1/0011C09D 131/04C09D 127/06B29C 66/1122B32B 2333/00B32B 2317/12C09J 2433/00B32B 2307/542B29K 2667/003B32B 37/182G03H 1/0252B42D 25/47B42D 25/455B29C 66/71B32B 27/36B32B 7/12B42D 25/355B29C 66/733G03H 2250/35D21H 21/40C09J 133/08B32B 27/08C09J 11/06B32B 27/32C09J 7/0203B42D 2033/32B42D 2033/30B42D 2033/28B42D 2033/20B42D 2033/16B42D 2033/14B42D 2033/10B42D 2033/08B42D 2033/04C09J 2301/414
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Claims

Abstract

An object of the present invention is to provide a thin volume hologram sheet to be embedded sufficiently resistant to a mechanical stress such as a stress including a tensile stress, a shear stress and a compression stress at the time of processing even under a heating condition, a forgery prevention paper and a card using the same. The object is achieved by providing a volume hologram sheet to be embedded comprising a volume hologram layer, and a substrate disposed only on one side surface of the volume hologram layer using an adhesion means, wherein a peeling strength of the volume hologram layer and the substrate is 25 gf/25 mm or more.

Claims

exact text as granted — not AI-modified
1 . A volume hologram sheet to be embedded comprising:
 a volume hologram layer; and   a substrate disposed only on one side surface of the volume hologram layer using an adhesion means,   wherein a peeling strength of the volume hologram layer and the substrate is 25 gf/25 mm or more.   
     
     
         2 . The volume hologram sheet to be embedded according to  claim 1 , wherein a main component of a resin material used in the volume hologram layer is an acrylic resin material, and the substrate is made of a polyester resin. 
     
     
         3 . The volume hologram sheet to be embedded according to  claim 1 , wherein the adhesion means is an adhesive layer, and an adhesive used for the adhesive layer is a curable adhesive. 
     
     
         4 . The volume hologram sheet to be embedded according to  claim 1 , wherein the adhesion means is an easy adhesion process, and the easy adhesion process is a chemical process using a primer agent. 
     
     
         5 . The volume hologram sheet to be embedded according to  claim 1 , wherein the volume hologram sheet to be embedded is a volume hologram sheet for a thread. 
     
     
         6 . The volume hologram sheet to be embedded according to  claim 1 , wherein the volume hologram sheet to be embedded is a volume hologram sheet for a card. 
     
     
         7 . A forgery prevention paper, wherein the volume hologram sheet to be embedded according to  claim 1  is used. 
     
     
         8 . A card, wherein the volume hologram sheet to be embedded according to  claim 1  is disposed between two sheets.

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