VOLUMETRIC HOLOGRAM LAMINATE AND LABEL FOR MANUFACTURING VOLUMETRIC HOLOGRAM LAMINATE

摘要

PROBLEM TO BE SOLVED: To provide a volumetric hologram laminate which is almost free for a mottle defect to be generated in a volumetric hologram layer even under such a state that the laminate is conserved under an applied pressure as when it is stored or the like as well as a label for manufacturing the volumetric hologram laminate. SOLUTION: This volumetric hologram laminate 1 is formed of a first pressure-sensitive adhesive layer 3, a volumetric hologram layer 5, a second pressure-sensitive adhesive layer 4 and a surface protecting film 6 laminated sequentially on a base material 2. The volumetric hologram layer 5 is recorded in a recording material made up of a matrix polymer and a photopolymerizable compound by hologram process. And the layer 5 has 30-70 deg.C glass transition point and 5×10<5> Pa-5×10<7> Pa dynamic storage modulus at 50 deg.C when measured at 6.28 rad/s. In addition, the second pressure-sensitive adhesive layer 4 shows the proportional increase of a dissipation factor (tandδ) indicated in terms of a dynamic loss elastic modulus/a dynamic storage modulus as frequency dependence characteristics at 10<1> rad/s-10 rad/s, to the shift to a low frequency.