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Security laminate having a security feature

A technology of safety layer, sound characteristics, applied in the direction of layered products, thin material processing, synthetic resin layered products, etc.

Inactive Publication Date: 2011-07-13
AGFA GEVAERT AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The prior art fails to provide a means of distinguishing security laminates from one another without resorting to complex detection systems

Method used

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  • Security laminate having a security feature
  • Security laminate having a security feature
  • Security laminate having a security feature

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0095] Although safety laminates having at least one film having a modulus of elasticity greater than 3.3 GPa and / or having a tensile strength of at least 90 MPa and / or a compressive strength of at least 105 MPa can be audibly distinguished from those not Those security laminates with this film:

[0096] i) dropping said security laminate lowermost at an angle from a height of about 5 cm on a substantially flat surface;

[0097] ii) listening to the sound made when said security laminate is dropped on a substantially flat surface; and

[0098] iii) comparing the sound emitted when said security laminate is dropped on a substantially flat surface with at least one resistance material having an elastic modulus greater than 3.3 GPa and / or having a tensile strength of at least 90 MPa and / or at least 105 MPa. However, it was not possible to reproducibly detect this difference using a Larson 824 string meter. Therefore, alternative methods were sought to verify the differences in ...

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Abstract

Provided is a security laminate comprising a plurality of lamellae and layers, wherein at least one of the lamellae is a biaxially stretched polyethylene terephthalate film, and wherein the ratio of the thickness of the one or more biaxially stretched polyethylene terephthalate films over the total thickness of the security laminate is at least 0.21. A method for detecting the falsification of such security laminates by a sound characteristic is also disclosed.

Description

technical field [0001] The present invention relates to security laminates having a security feature, ie the ability to produce a recognizable sound. Background technique [0002] The term "security laminate" includes stand-alone security articles, including identification cards and banknotes. The term "identification card" includes cards that require identification of the holder and ranges from: from passports to national identification cards (ID-cards) to establish the national identity of their citizens, to visas, to cards involved in the electronic transfer of money (such as bank cards, check cards, payroll cards, credit cards, debit cards and shopping cards), to authorize the holder of the card to enter a specific area (such as company (employee ID card), military, public facilities, bank's valuables insurance library, etc.), to social security cards, to driver's licenses, to health care cards and to membership cards for clubs and societies. [0003] Poly(vinyl chlori...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B42D15/10G07D7/00B32B27/36
CPCB42D15/10G07D7/08B42D2033/30B42D25/00B32B2307/518B42D2031/04B42D2031/22B42D25/455B32B2367/00Y10T428/2495B32B27/304B32B27/365B42D25/23B42D25/29B42D25/45
Inventor I·古恩斯W·沃特斯
Owner AGFA GEVAERT AG