CN2575689Y

CN2575689Y - Telescopes

Info

Publication number: CN2575689Y
Application number: CN 02279714
Authority: CN
Inventors: 王树初; 郑建武
Original assignee: Huazhong University of Science and Technology
Current assignee: Huazhong University of Science and Technology
Priority date: 2002-10-24
Filing date: 2002-10-24
Publication date: 2003-09-24
Anticipated expiration: 2012-10-24

Abstract

The utility model relates to a laser holographic aluminum removing anti-counterfeiting sign, which comprises a plastic base, a metallic aluminum reflection layer, and an adhesive layer which are stacked in sequence, wherein, a hologram layer is arranged between the plastic base and the metallic aluminum reflection layer; hollow patterns are arranged on the metallic aluminum reflection layer; a separation layer and an imaging layer are arranged between the plastic base and the hologram layer in sequence. The laser holographic aluminum removing anti-counterfeiting sign provided by the utility model is used for increasing the anti-counterfeiting capability of the anti-counterfeit signs, and digital codes, and patterns or letters are arranged on the anti-counterfeit signs by non-holographic technique. The anti-counterfeiting capability is raised.

Description

Laser removes the aluminium holographic anti-counterfeiting label

Technical field

The utility model belongs to the antiforge laser holographic technology, is specifically related to laser and removes the aluminium holographic anti-counterfeiting label.

Background technology

China has begun the development of laser embossed holography technology from the eighties mid-term (about 1987).Because laser holographic mark can not utilize common photograph and method of printing to duplicate simply, and along with the appearance of embossed holographic technology, make the low-cost hologram of making in enormous quantities be achieved, so laser embossed holography figure is very fast has obtained application aspect anti-tamper security.Optical technology is used for false proof, mainly is basic laws such as the scattering that produces when utilizing light and matter interaction, reflection, transmission, absorption, diffraction, obtains some special visual effects, for example multilayer optical medium book membrane structure, optical grating construction, hologram etc.But, along with developing rapidly of laser dot-matrix holographic technique and moulding holographic technology, the forgery of mould pressing holographic anti-counterfeiting logo is also become than being easier to, thereby has reduced the anti-counterfeiting performance of embossed holographic sign.In order to improve the anti-counterfeiting power of antiforge laser holographic technology, must improve constantly the optical characteristics of laser hologram self, laser holography and other technology are organically combined, improve and invent new manufacture craft.

Summary of the invention

The purpose of this utility model is to provide two kinds of novel anti-counterfeiting marks, and this anti-counterfeiting mark is difficult for forging, and its anti-counterfeiting power is greatly improved.

For achieving the above object, a kind of laser removes the aluminium holographic anti-counterfeiting label, comprise folded mutually successively plastic-substrates, metallic aluminium reflection horizon and adhesive-layer, between plastic-substrates and metallic aluminium reflection horizon, be provided with hologram layer, it is characterized in that: the picture and text that have hollow out on the described metallic aluminium reflection horizon.

Be provided with separating layer and imaging layer between above-mentioned plastic-substrates and the hologram layer successively.

Laser provided by the invention removes the aluminium holographic anti-counterfeiting label, is a kind of practical technique that the inventor researches and develops for the anti-counterfeiting power that increases anti-counterfeiting mark, is a kind of technology of using non-holographic fabrication techniques numerical coding, figure or literal on anti-counterfeiting mark.Its anti-counterfeiting power is greatly improved.

Description of drawings

Fig. 1 (a) is the structural representation of common holographic anti-counterfeiting label, and Fig. 1 (b) removes the structural representation of the holographic anti-counterfeiting label after the aluminium for laser;

Fig. 2 (a) is the structural representation of blanching seal holographic anti-counterfeiting label, and Fig. 2 (b) removes the structural representation of aluminium blanching seal holographic anti-counterfeiting label afterwards for laser;

Fig. 3 is the synoptic diagram that spends method numeral number " 12345678 " of making on sign of aluminium.

Embodiment

Shown in Fig. 1 (a), paste holographic anti-counterfeiting label certainly and can form by three layers of different material usually.Plastic-substrates 1 (for example PET plastics) is wherein arranged, metallic aluminium reflection horizon 2, adhesive-layer 3 is generally pressure sensitive adhesive, i.e. adhesive sticker.Adopt mould pressing process that hologram 4 is stamped on plastic-substrates and the metallic reflector.

In Fig. 2 (a), blanching seal holographic anti-counterfeiting label can be made up of five layers of different material usually.Plastic-substrates 7 is wherein arranged, separating layer 8, imaging layer 9 is stamped in holographic Figure 10 on the imaging layer with mould pressing process, aluminium coated 11, hot melt adhesive layer 12.

Because the interaction of laser and material is relevant with the characteristic and the Wavelength of Laser of material itself.In laser holographic anti counterfeiting label, the plastic-substrates on surface and middle metallic aluminium reflection horizon belong to dissimilar materials.Can select the laser of specific wavelength, this laser only works with the aluminium reflection horizon of centre (making the metallic aluminium gasification) and does not work with the plastic layer on surface.Adopt laser to go the structure of the holographic anti-counterfeiting label after the aluminium that variation has taken place, shown in Fig. 1 (b) and Fig. 2 (b), wherein to become be 5 in the aluminium reflection horizon 2 of Fig. 1, and the part of having removed aluminium with laser is 6.It is 13 that aluminium reflection horizon 11 among Fig. 2 becomes, and the part of having removed aluminium with laser is 14.So, make the laser of this wavelength do scanning motion, just can on anti-counterfeiting mark, show these figures, literal or number at the surface of holographic anti-counterfeiting label figure, literal or number as required.These figure, literal or numbers that show on sign all are transparent, and are subjected to the protection of surperficial plastic foil, wipe.

What spend that the method for aluminium makes is a kind of picture and text of hollow out.This picture and text of the hollow out of aluminium that go also can be produced on the plastic sheeting of aluminizing.

Claims

1. a laser removes the aluminium holographic anti-counterfeiting label, comprises folded mutually successively plastic-substrates, metallic aluminium reflection horizon and adhesive-layer, is provided with hologram layer between plastic-substrates and metallic aluminium reflection horizon, it is characterized in that: the picture and text that have hollow out on the described metallic aluminium reflection horizon.

2. laser according to claim 1 removes the aluminium holographic anti-counterfeiting label, it is characterized in that: be provided with separating layer and imaging layer between described plastic-substrates and the hologram layer successively.