Volume hologram transfer foil, volume hologram laminate, and production method thereof

A volume hologram and transfer foil technology, which is applied in the process, decorative arts, and instruments for producing decorative surface effects, can solve problems such as insufficient anti-counterfeiting means for holograms, and achieve the effect of reducing costs

Active Publication Date: 2008-12-24
DAI NIPPON PRINTING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, it was difficult to reproduce the hologram in the past, so it can be used for various purposes as an anti-counterfeiting means. is insufficient

Method used

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  • Volume hologram transfer foil, volume hologram laminate, and production method thereof
  • Volume hologram transfer foil, volume hologram laminate, and production method thereof
  • Volume hologram transfer foil, volume hologram laminate, and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0355] (1st laminate)

[0356] A PET film (trade name Lumira-T60 (50 μm): manufactured by Toray Co., Ltd.) was prepared as the first film, and a volume hologram recording material having the following composition was coated by gravure printing as a hologram forming material. With a dry film thickness of 7 μm, a surface-release-treated PET film (trade name SP-PET (50 μm), manufactured by Toisero Co., Ltd.) was laminated on the coated surface to prepare a first laminate.

[0357]

[0358] ・Binder resin (polymethyl methacrylate resin (molecular weight: 200,000))

[0359] 50 parts by weight

[0360] 3,9-Diethyl-3'-carboxymethyl-2,2'-thiocarbocyanine iodide salt

[0361] 0.5 parts by weight

[0362] 6 parts by weight of diphenyliodonium hexafluoroantimonate

[0363] 2,2-bis(4-(acryloyldiethoxy)phenyl)propane

[0364] 80 parts by weight

[0365] 80 parts by weigh...

Embodiment 2

[0386] A volume hologram transfer foil was produced by the same method as in Example 1 except that the following steps were performed to form an image forming layer.

[0387] (Formation of image forming layer)

[0388] The first film of the laminate of the above-mentioned first film / hologram / releasable protective layer / second film is peeled off, and UV PAL BL ink manufactured by Teikoku Ink Manufacturing Co., Ltd. is printed on the volume hologram layer so that the dry film thickness becomes 5 μm , at 80W / cm 2 In metal halide lamps, at about 250mJ / cm 2 UV irradiation is carried out.

Embodiment 3

[0390] A volume hologram transfer foil was produced by the same method as in Example 1 except that the following steps were performed to form an image forming layer.

[0391] (Formation of image forming layer)

[0392] Peel off the first film of the above-mentioned first film / hologram / peelable protective layer / second film laminate, and print ACT(N) polarized pearl ink on the volume hologram layer by screen printing to make the dry film thickness becomes 5 μm. After natural drying at 20° C. for 10 minutes, ACT(N) 710 ink was printed by screen printing so that the dry film thickness would be 5 μm. Next, natural drying was performed at 20° C. for 10 minutes.

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PUM

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Abstract

A major object of the present invention is to provide a volume hologram transfer foil that gives a volume hologram laminate higher in antiforgery function. The present invention is characterized by comprising: a substrate, a volume hologram layer carrying a recorded volume hologram that is formed on the substrate, and an image forming layer carrying a formed image and a heat seal layer containing a thermoplastic resin that are formed on the volume hologram layer, and comprising no reflective layer having a function to reflect light. The subject can be solved by the volume hologram transfer foil provided by the present invention.

Description

technical field [0001] The present invention relates to a volume hologram layer transfer foil used for transferring a volume hologram layer onto a transfer target body, a method for producing a volume hologram laminate using the transfer foil, and the like. Background technique [0002] A hologram is an image formed by interfering two lights of equal wavelength (object light and reference light), and the shock front of the object light is recorded on a photosensitive material as interference fringes. If the reference light when irradiating and recording interference fringes For light with the same wavelength and the same angle, the interference fringes cause diffraction, which can reproduce the same shock front as the original object light. Since holograms have advantages such as beautiful appearance and relatively difficult duplication, they are often used for security purposes and the like. Among them, among plastic cards such as credit cards and debit cards, cards with h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03H1/18G03H1/02G03H1/04B44C1/17
Inventor 卫藤浩司阿座上实粟野和利植田健治
Owner DAI NIPPON PRINTING CO LTD
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