Noble metal coin with transparent anti-counterfeit window, and manufacturing technology thereof

A precious metal and transparent technology, applied in coins, clothing, jewelry, etc., can solve the problem that the anti-counterfeiting advantage is no longer obvious, and achieve the effect of improving anti-counterfeiting performance, improving anti-counterfeiting performance, and enriching the form of expression

Active Publication Date: 2012-06-27
SHANGHAI MINT +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the development of modern industrial technology and the continuous improvement of the performance of processing equipment, the reliability and safety of these traditional coin anti-counterfeiting technologies have been greatly challenged, and the anti-counterfeiting advantages are no longer obvious

Method used

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  • Noble metal coin with transparent anti-counterfeit window, and manufacturing technology thereof
  • Noble metal coin with transparent anti-counterfeit window, and manufacturing technology thereof
  • Noble metal coin with transparent anti-counterfeit window, and manufacturing technology thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0034] Taking the φ40mm year of the snake zodiac transparent anti-counterfeiting window silver medal as an example to describe the production process

[0035] a. Making imprinting mold

[0036] Imprint molds are based on image 3 , Figure 4 After turning the gypsum board made of the design draft into a resin mold (the middle plum blossom pattern is treated as a plane), then use a horizontal profiling engraving machine to directly engrave according to a certain reduction ratio, and then repair the mold, machine Processes such as processing and heat treatment are used to make shapes.

[0037] b. Make a transparent anti-counterfeiting window

[0038] The transparent anti-counterfeiting window adopts the structure of the base film and the composite film on the front and back of the base film. The optical anti-counterfeiting microlens technology and holographic technology are used to copy the auspicious cloud and the blessing characters on the film with a thickness of tens of m...

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PUM

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Abstract

The invention discloses a noble metal coin with a transparent anti-counterfeit window, and a manufacturing technology thereof. The coin is composed of a coin substrate and the transparent anti-counterfeit window. The transparent anti-counterfeit window is embedded in the coin substrate. The transparent anti-counterfeit window is formed by a base film and composite surface films on the two faces of the base film. An optical anti-counterfeit mark is printed on the base film, and the surface films are transparent films. The manufacturing technology comprises steps that: a coining mould is manufactured; the transparent anti-counterfeit window is manufactured; a noble metal coin blank is manufactured; the blank is subject to primary coining; an obtained noble metal coin half-finished product is punched; the window sheet is blanked on a set position; and the noble metal coin is subject to secondary coining. According to the invention, the transparent anti-counterfeit window is applied on the noble metal coin, such that a novel approach of noble metal coin anti-counterfeiting is provided. With the technology, anti-counterfeiting performance of the noble metal coin is greatly improved, and a novel technology is combined with a traditional coinage technology. The embedding technology that can not be directly used on metal coins is attached to the metal coin by using the transparent anti-counterfeit window. Therefore, the anti-counterfeiting performance of the product is improved, and a traditional monotonous manifestation that metal is adopted as a coinage material is out-broken.

Description

technical field [0001] The invention relates to the technical field of minting coins, in particular to the anti-counterfeiting technology of precious metal coins and stamps, in particular to a precious metal coins and stamps with a transparent anti-counterfeiting window and a manufacturing process thereof. Background technique [0002] With the rapid development of our country's economy and the continuous improvement of people's living standards, the market demand for gold and silver commemorative coins and badges is increasing day by day. Driven by profit, criminals are also increasingly rampant in imitating gold and silver commemorative coins and badges. How to improve the anti-counterfeiting performance of my country's precious metal coins has become a very urgent topic. [0003] The anti-counterfeiting process of traditional precious metal coins and stamps is mainly manifested in the use of different local pattern treatments such as sandblasting, shot peening and anti-sa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A44C21/00B21D13/02
Inventor 张勃杨怡春朱军周建栋宋金华张斌张振江张春晔王斌
Owner SHANGHAI MINT
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