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Safety line and anti-counterfeiting paper thereof

A technology of security thread and anti-counterfeiting paper, which is applied in the field of anti-counterfeiting paper, can solve the problems of high anti-counterfeiting effect on the front line and inconspicuous change effect, and achieve the effect of facilitating large-scale production

Active Publication Date: 2012-08-22
XIAN BANKNOTE PRINTING +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] For this reason, the technical problem to be solved by the present invention is that usually the security thread is embedded in the anti-counterfeiting paper to produce a common watermark, and the change effect is not obvious, especially when viewed under transmitted light, it is an opaque black security thread, and the first-line anti-counterfeiting effect needs to be high. It is proposed to design a security thread with the effect of continuous colored translucent strips that can be easily distinguished visually under ordinary light, which is different from the watermark effect of the existing security thread, and an anti-counterfeit paper using the security thread

Method used

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  • Safety line and anti-counterfeiting paper thereof
  • Safety line and anti-counterfeiting paper thereof
  • Safety line and anti-counterfeiting paper thereof

Examples

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preparation example Construction

[0058] The preparation method of the anti-counterfeiting security thread spliced ​​by at least two films of different colors in the present invention comprises the following steps:

[0059] 1] Take at least two colored films of different colors; take a base material film;

[0060] 2) Splicing the above-mentioned colored film on the base material film to form a polymer multilayer film through compounding methods, including dry compounding, wet compounding, extrusion compounding, co-extrusion compounding or hot-melt compounding;

[0061] 3) Cut the polymer multilayer film into anti-counterfeit security lines along the direction perpendicular to the splicing direction.

[0062] The method may also include the step of processing edges and / or patterns with a die cutting device or a laser device before or after cutting the polymeric multilayer film.

[0063] Specifically,

[0064] The hot-melt and / or water-soluble base layer can be a dense film, which can be pressed, dried and com...

Embodiment 1

[0076] Embodiment 1 provides a specific implementation of the safety thread of the present invention. see image 3 , in this embodiment, the security thread is a two-layer structure, using hot-melt material nylon polymer film to prepare the base layer; Optically variable features; security thread die cut using die cutting equipment Figure 5 The geometry shown is a band with hollowed out edges; 40 μm thick, 3 mm wide (at its widest point), and 1 mm wide in the hollowed out area. The rainbow light-changing anti-counterfeiting feature has the color-changing characteristic of red to green under the condition of reflected light. The security thread is embedded in the anti-counterfeiting paper in the form of a window during the paper copying process; the window-opening part of the anti-counterfeiting paper is observed under visual reflected light to show rainbow light change characteristics, and the security thread is not easily observed in the non-window area of ​​the window-ope...

Embodiment 2

[0078] Embodiment 2 provides a specific implementation of the safety thread of the present invention. see Figure 4 , the safety line is a three-layer structure, using water-soluble material PVA (polyvinyl alcohol) film as the base layer, and choosing translucent PET pearlescent film as the color film layer, the multi-layer film has the characteristics of pearlescent light change after compounding; wire die cutting Image 6 The shown geometric edge and central hollow band; the safety line is 30μm thick, 4mm wide (at its widest point), and the hollow area is 1mm wide. The security thread is embedded in the anti-counterfeiting paper in the form of a window during the paper copying process; the windowed part of the paper shows the characteristics of pearlescent optical change under visual reflected light, and the security thread is not easy to be observed in the non-windowed area of ​​the windowed surface of the paper page; Observed under transmitted light, a continuous translu...

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Abstract

The invention relates to an anti-counterfeiting safety line and anti-counterfeiting paper. The anti-counterfeiting safety line comprises a semitransparent color film layer, wherein the color film layer has the pearl-luster light change characteristics or rainbow light change characteristics. By using the anti-counterfeiting safety line in the invention, the technical problems that a common watermark generated after the safety line is embedded into the anti-counterfeiting paper does not show an obvious change effect generally and particularly appears as a non-transparent black safety line when observed under transmission light and the anti-counterfeiting effect needs improvement are solved; and the safety line provided by the invention can be easily distinguished and identified visually under common illumination, is different from the watermark effect of the existing safety line, and realizes a continuous color semi-transparent stripe effect.

Description

technical field [0001] The invention relates to the field of anti-counterfeiting materials and anti-counterfeiting technology, in particular to an anti-counterfeiting security thread which can be used for banknotes, securities, ticket cards and similar items, and an anti-counterfeiting paper implementing the security thread. technical background [0002] In order to improve the safety and anti-counterfeiting performance of paper-based items, people embed an anti-counterfeiting symbol—safety thread in such items to form anti-counterfeiting paper. At present, the security thread has been widely used in banknotes all over the world, and has become an anti-counterfeiting element familiar to the public. There are two ways to embed the security thread, fully buried or windowed, and the anti-counterfeiting items embedded in the security thread are easy to identify and difficult to be counterfeited. Disclose a kind of anti-counterfeiting security thread and its manufacturing method...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H21/42D21H27/00
Inventor 郭钢锋李晓伟吴高民李新宇曹瑜钟有菊
Owner XIAN BANKNOTE PRINTING
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