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Lamination process for producung security laminates

A technology for laminated materials and safety layers, applied in lamination, lamination devices, chemical instruments and methods, etc., can solve problems such as surface topography defects, imperfect module masking, and thinning of opaque masking films

Inactive Publication Date: 2011-11-23
AGFA GEVAERT AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Second, laminates are less desirable if not impossible to reproduce by counterfeiting
Fourth, it is important that the manufacturing cost of the laminate is restrictively cheap
[0013] Prior art security laminates with non-contact modules have surface topography defects resulting in unpredictable security laminate thicknesses and imperfect module masking due to opaque masking observed in the form of black rims Film thinning and significant air entrapment

Method used

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  • Lamination process for producung security laminates
  • Lamination process for producung security laminates
  • Lamination process for producung security laminates

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1 to 26

[0131] Inventive Examples 1 to 26: One-step process, non-vacuum

[0132] The security laminates of inventive examples 1 to 26 were manufactured in a one-step process by using OASYS® from OASYS Technologies Ltd. TM OLA 6 / 7 Laminators, in the configurations given in Table 1 below, laminated different precursor security laminates and sheets together, where the different configurations were placed between two stainless steel plates, silicone paper In the middle to prevent sticking under the conditions given in Table 1 for a suitable lamination experiment: LT is the lamination temperature, LP is the lamination pressure in nominal units, HT is the configuration in s in layers time at press temperature, HPT is the temperature at which the pressure change occurs, ect is the temperature in °C at which the resulting safe laminate can be removed from the laminator, Top[=morphology] is as defined in ISO 7810 at ID - Final thickness of the security laminate in μm in the format of the ID ...

Embodiment 27 and 28

[0143] Inventive Examples 27 and 28: One-step process using vacuum

[0144] The security laminates of inventive examples 27 and 28 were produced in a one-step process by combining prelaminate V / preperforated 500 μm PETG (with PETG / PU-adhesive layers prelaminated on both sides in the perforations) Non-contact module) / prelaminate VI was placed in two 1 mm thick steel plates in a Lauffer Lamination Systems Vacuum Laminator Model LC 70 with silicone paper between the outermost precursor and the plate, in Temperature of 145°C, 40N / cm 2 pressure and a vacuum of 20 mbar for 10 min. Use preheated oil for heating and tap water for cooling. Heat was started when the laminator was switched off, but pressure was applied only when the required vacuum had been achieved, ie after about 3 minutes, and kept through the lamination process for 10 minutes, followed by cooling.

[0145] A security laminate thickness of 712 μm was obtained, consistent with or better than the results obtained wit...

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Abstract

A process for producing a security laminate comprising a plurality of lamellae and layers, comprising the steps of: a) providing at least one film, at least a first and a second prelaminate and a contactless module, wherein the contactless module is not incorporated in the prelaminate or the film; and b) laminating in one step together the at least first prelaminate, the at least one film, the contactless module and the at least second prelaminate to provide the security laminate.

Description

field of invention [0001] The present invention relates to a lamination method for the production of security laminates. Background of the invention [0002] The term "security laminate" includes tamper-evident seals on pharmaceuticals, videotapes, compact discs, and packaging; security features on trademarks and labels; and identification documents, including documents; diskettes; cards involved in electronic transfers of money, such as banks cards, check cards, payroll cards, credit and debit cards; telephone cards; stored value cards; prepaid cards; shopping cards; loyalty cards; microcontroller cards); contact cards; contactless cards; proximity cards (such as radio frequency (RFID) cards); passports; driver's licenses; network access cards; employee badges; security cards; visas; immigration data; National ID cards; citizenship cards; social security cards and badges; health care cards; certificates; identification cards or documents; voter registration and / or identifi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B37/18B42D15/10
CPCB32B2367/00B32B37/185B42D15/10B32B2425/00B32B2305/342B32B37/003B42D25/00B32B2309/68B42D2033/46Y10T156/1062Y10T428/24322Y10T428/31935B42D25/45
Inventor I·古恩斯
Owner AGFA GEVAERT AG