Patent Number: 7,820,263

Title: Volume hologram laminate

Abstract: The present invention relates to a volume hologram laminate with low generation of spotty hologram flaws in the volume hologram layer even when kept under pressurized conditions during storage, and to a volume hologram laminate-fabricating label. The volume hologram laminate 1 of the invention has a first adhesive layer 3, a volume hologram layer 5, a second adhesive layer 4 and a surface protective film 6 formed in that order on a substrate 1, wherein the volume hologram layer is a hologram recording in a recording material comprising a matrix polymer and a photopolymerizable compound, having a glass transition point of 30.degree. C.-70.degree. C. and a dynamic storage elastic modulus of 5.times.10.sup.5 Pa-5.times.10.sup.7 Pa at 50.degree. C. when measured at 6.28 rad/s, and the second adhesive layer has a dynamic storage elastic modulus of no greater than 5.times.10.sup.4 Pa or at least 2.5.times.10.sup.5 Pa at 50.degree. C. when measured at 6.28 rad/s.

Inventors: Ohtaki; Hiroyuki (Shinjuku-Ku, JP), Ueda; Kenji (Shinjuku-Ku, JP)

Assignee: Dai Nippon Printing Co., Ltd.

International Classification: G03H 1/04 (20060101)

Expiration Date: 2018-10-26 0:00:00