A laser holographic anti-counterfeiting film

Abstract

The invention belongs to the field related to preparation of holography anti-fake materials, and discloses a laser holography anti-fake film. The laser holography anti-fake film comprises a base film, a release layer, an information layer, a reflection layer and a hot melt adhesive layer laminated in sequence, wherein the information layer consists of such as substrates as epoxy resins and a lot of micro capsules dispersed in the substrates; capsule cores of the micro capsules consist of heating curing agents for generating a cross linking reaction with the epoxy resins in the mold pressing process to cure holography relief patterns; and capsule walls are used for stopping contact between the capsule cores and the substrates before mold pressing. The laser holography anti-fake film can effectively solve multiple defects in a thermoplastic holography anti-fake film; and a laser holography film product with nearly 100% of high-precision copy information, not influenced by the heat transfer working conditions, convenient to preserve for a long time and maintaining high-quality anti-fake function can be obtained.

Description

technical field

[0001] The invention belongs to the field related to the preparation of holographic anti-counterfeiting materials, and more specifically relates to a laser holographic anti-counterfeiting film. Background technique

[0002] With the emergence of laser holographic molding technology, low-cost, mass-produced holograms can be realized. The laser holographic anti-counterfeiting film in the prior art is generally composed of a base film, a release layer, an information layer, a reflective layer and a hot melt adhesive layer laminated in sequence. Among them, the information layer is usually coated with a thermoplastic polymer, so that under certain temperature and pressure conditions, the coating embosses the relief pattern on the metal mold on the coating or aluminum layer through thermal deformation; during heat transfer, the film The tape separates the base film and the information layer from the release layer and transfers to the sample surface. For example,...

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