VOLUME HOLOGRAM SHEET TO BE EMBEDDED, FORGERY PREVENTION PAPER, AND CARD
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United States of America Patent
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app pub date -
Feb 17, 2017
filing date -
Jan 19, 2010
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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.
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International Classification(s)
- C09J:ADHESIVES; ADHESIVE PROCESSES IN GENERAL
- B29C:SHAPING OR JOINING OF PLASTICS; SHAPING OF SUBSTAN....
- C09D:COATING COMPOSITIONS, e.g. PAINTS, VARNISHES, LACQ....
- G09F:DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLA....
- B42D:BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER O....
- D21H:PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED....
- G03H:HOLOGRAPHIC PROCESSES OR APPARATUS
- B32B:LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA....
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