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Laser anti-fake aluminium-foil and making method

A laser anti-counterfeiting and manufacturing method technology, applied in chemical instruments and methods, lamination, layered products, etc., can solve problems such as cracking, damage, inability to meet users, and achieve good high temperature resistance, simple process, good resistance Effects of mildness and aging resistance

Inactive Publication Date: 2007-11-14
沈文爱
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the can industry needs to stretch to make can lids, the laser pattern on the stamping place will easily disappear or be destroyed after punching; They all use thermosetting inks, and the printing must be baked in an oven at 190°C-220°C for at least 18 minutes per color, and the transparent release layer and molded layer cannot withstand such a long-term high-temperature baking at all. Cracks will occur under the environment, which cannot meet the needs of users at all. At present, there is no technical solution to solve this problem.

Method used

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  • Laser anti-fake aluminium-foil and making method

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Embodiment 1

[0026] Fig. 1 is a schematic structural view of the laser anti-counterfeiting aluminum foil of the present invention; it includes a visible aluminized layer 1, an adhesive layer 2 and a metal aluminum foil layer 3 stacked in sequence. The visible aluminized layer 1 and the metal aluminum foil layer 3 are combined through the adhesive layer 2. The present invention uses a special adhesive to replace the original self-adhesive, and the bonding effect is better. The viscosity of the adhesive is 140°C The time is the strongest, so after gluing, it should be baked in an oven and then laminated under pressure.

[0027] Fig. 4 is a flow chart of the manufacturing method of the laser anti-counterfeiting aluminum foil of the present invention. The manufacturing method of laser anti-counterfeiting aluminum foil comprises the following steps:

[0028] Aluminum foil cleaning 61: cleaning the surface of metal aluminum foil raw materials;

[0029] Gluing 62: apply glue on the surface of t...

Embodiment 2

[0035] Fig. 2 is a schematic structural view of the laser anti-counterfeiting aluminum foil for building materials of the present invention; in this embodiment, when the processed laser anti-counterfeiting aluminum foil is used in fields such as building materials, a layer of transparent protective layer 4 needs to be compounded outside the visible aluminum coating layer 1. Information content such as patterns or characters on the aluminum layer 1 is protected to prevent scratches or abrasions.

[0036] Correspondingly, in the process steps, after the film 66 is removed, a composite protective layer 67 needs to be added: a transparent protective layer is laminated on top of the visible aluminum plating layer.

Embodiment 3

[0038] Fig. 3 is a schematic structural view of the packaging bag laser anti-counterfeiting aluminum foil of the present invention;

[0039] In this embodiment, when the processed laser anti-counterfeiting aluminum foil is used in packaging bags and other fields, it is necessary to add an outer transparent plastic layer 51 and an inner transparent plastic layer 52 on both sides, and the outer transparent plastic layer 51 is laminated on the visible aluminized layer 1 The inner transparent plastic layer 52 is laminated on the lower side of the metal aluminum foil layer 3 .

[0040] Correspondingly, a composite protective layer 67 needs to be added after peeling off the film 66 in the process steps: at the same time, a transparent plastic layer is composited on the top of the visible aluminum plating layer and the bottom of the metal aluminum foil layer. Or use film cooling 68 after peeling off the film 66: pour the melted plastic liquid onto the two sides of the laser anti-coun...

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Abstract

The invention discloses a laser anti-counterfeiting aluminum foil and its preparation method. The anti-counterfeiting aluminum foil contains a delomorphic aluminum plating layer, an adhesive layer and a metal aluminum foil layer overlapping successively. The preparation method mainly contains washing, gluing, heating, pressing, covering membrane, water or wind cooling and removing membrane etc. of the aluminum foil. The invention transfers the laser anti-counterfeiting membrane onto the aluminum foil by using new-type BOPP. The BOPP substrate membrane has good temperature and age resistance, soft materials, without coating transparent shape-separating layer and simple technology. Transferring the anti-counterfeiting membrane onto the aluminum foil can avoid the laser patterns disappearing or destroying. The whole membrane has good temperature resistance and is uneasy to craze. The invention can be applied in many fields such as packing bag and building materials etc. It has extensive application range and good market value.

Description

【Technical field】 [0001] The invention relates to an anti-counterfeit aluminum foil, in particular to a laser anti-counterfeit aluminum foil. 【Background technique】 [0002] Laser anti-counterfeiting is to use a laser light source to record the light wave amplitude information and corresponding information at the same time in a very short period of time. With thousands of interference barcodes per millimeter, using the principle of light interference, each particle that constitutes the image is reflected, that is, Laser hologram. After making a plate, it is impossible to produce exactly the same plate with the same production method, so as to achieve the purpose of anti-counterfeiting. [0003] The current laser anti-counterfeiting transfer film is made of PET transfer film. The PET transfer film is first coated with a transparent release layer on the PET base film, and then coated with a transparent molded layer on the transparent release layer, and molded on the molding ...

Claims

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Application Information

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IPC IPC(8): B32B15/01B32B7/12B32B15/08B32B37/02B32B37/12
Inventor 沈文爱
Owner 沈文爱
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