Security document with a transparent pattern and a process for producing a security document with a transparent pattern

a security document and transparent technology, applied in the field the production process of security documents with transparent patterns, can solve the problems that the prior art fails to teach the realization of a permanent transparent pattern in the self-supporting film itself or a means, and achieves the effect of higher melting point and higher melting poin

Inactive Publication Date: 2008-10-02
AGFA GEVAERT AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0021]Further aspects and advantages of the invention will become apparent from the description hereinafter.

Problems solved by technology

Therefore, the prior art fails to teach the realization of a permanent transparent pattern in a polymer self-supporting film itself or a means of obtaining a permanent transparent pattern in a self-supporting polymer film.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

invention examples 1 to 11

[0219]The ca. 1100 μm thick extrudates of INVENTION EXAMPLES 1 to 11 all with 2% by weight of titanium dioxide and 15% by weight of SAN 06 were produced by mixing the ingredients in Table 8 in the proportions given in Table 8 and then drying the mixture at 150° C. for 4 hours under vacuum (<100 mbar) before melting in a PET-extruder, extrusion through a sheet die and cooling to produce the extrudates of INVENTION EXAMPLES 1 to 11 having a density of ca. 1.3 g / mL as summarized in Table 8.

TABLE 8SANUVITEXTiO2ExampleTO4PET04SAN[wt OB-one[wt Densitynr.[wt %][wt %]type%][ppm]%][g / mL]18300615—2.01.294258250615—2.01.289341.541.506151002.01.284433.349.706151002.0532.350.706151002.0632.350.706151002.0726.2956.7106151002.0825.2557.7506151002.09255806151002.01.3041024.358.706151002.011—830615—2.01.299

[0220]Longitudinal stretching was carried out for each extrudate as described in COMPARATIVE EXAMPLES 1 to 3 under the conditions given in Table 9. The expected thickness is the thickness based on...

invention examples 12 to 16

[0228]The ca. 1100 μm thick extrudates of INVENTION EXAMPLES 12 to 16 all with 2% by weight of titanium dioxide were produced as described for INVENTION EXAMPLES 1 to 11 with 15% by weight of SAN or 15% by weight of ABS (MAGNUM 8391) and different weight ratios of TO4 and PET04 as summarized in Table 13.

TABLE 13InventionUVITEXTiO2ExamplePET02PET04MAGNUMSAN 06OB-one[wtnr.[wt %][wt %]8391 [wt %][wt %][ppm]%]10283015——2.010341.241.8—151002.010432.350.7—151002.01053251—151002.0106—83—151002.0

[0229]Stretching in the length direction was carried out for each extrudate as described in COMPARATIVE EXAMPLES 1 to 3 under the conditions given in Table 14. The expected thickness is the thickness based on the extrudate thickness and longitudinal as observed for non-voided films.

TABLE 14InventionLongitudinal stretchingExampleforcetemperatureThickness [μm]ODODnr.ratio[N / mm2][° C.]MeasuredExpectedTR924[X-rite]102 / LS13.68—3180.840.60 103 / LS1*3.37.973753331.080.96 103 / LS2*3.37.143330.9480.86 103 / LS3*...

invention examples 17 to 19

[0236]The ca. 1100 μm thick extrudates of INVENTION EXAMPLES 17 to 19 all with 2% by weight of titanium dioxide and 15% by weight of SAN 06 were produced as described for EXAMPLES 1 to 11 with different weight ratios of TO4 and PET04 as summarized in Table 20.

TABLE 20InventionPET02Example[%PET04SAN 06UVITEX OB-TiO2nr.by wt][% by wt][% by wt]one [ppm][% by wt]1732.350.7151002.018—83151002.019—83151002.0

[0237]Stretching in the length direction was carried out for each extrudate as described in COMPARATIVE EXAMPLES 1 to 3 under the conditions given in Table 21. The expected thickness is the thickness based on the extrudate thickness and longitudinal as observed for non-voided films.

TABLE 21InventionLongitudinal stretchingExampleforcetemperatureThickness [μm]ODODnr.ratio[N / mm2][° C.]measuredexpectedTR924[X-rite]17 / LS13.38.69036533317 / LS23.18.28038035518 / LS13.858—3201.241.0019 / LS13.628—3231.090.82

[0238]Transversal stretching was then performed on the length-stretched films with a stretch...

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Abstract

A security document comprising a plurality of self-supporting polymeric films and layers therebetween and thereon, said plurality of self-supporting polymeric films comprising a non-transparent microvoided axially stretched self-supporting polymeric film exclusive of foam and having a permanent transparent pattern; and a process for producing a security document with a permanent transparent pattern comprising the step of: image-wise application of heat optionally supplemented by the application of pressure to a security document precursor comprising a plurality of self-supporting polymeric films and layers therebetween and thereon, said plurality of self-supporting polymeric films comprising a non-transparent microvoided axially stretched self-supporting polymeric film exclusive of foam.

Description

CROSS-REFERENCE TO RELATED PATENT APPLICATIONS[0001]This application claims the benefit of U.S. Provisional Application No. 60 / 908,526 filed Mar. 28, 2007, U.S. Provisional Application No. 60 / 908,536 filed Mar. 28, 2007, U.S. Provisional Application No. 60 / 908,542 filed Mar. 28, 2007 and U.S. Provisional Application No. 60 / 975,300 filed Sep. 26, 2007, which are all incorporated by reference. In addition, this application claims the benefit of European Application No. 07104953.0 filed Mar. 28, 2008, European Application No. 07104947.2 filed Mar. 28, 2007, European Application No. EP 07104948.0 filed Mar. 28, 2007, European Application No. 07104950.6 filed Mar. 28, 2007, PCT Application No. PCT / EP07 / 060359 filed Oct. 1, 2007, PCT / EP07 / 060218 filed Sep. 26, 2007, PCT / EP07 / 060380 filed Oct. 1, 2007 and PCT / EP07 / 060373 filed Oct. 1, 2007, which are all also incorporated by reference.FIELD OF THE INVENTION[0002]The present invention concerns a security document with a transparent pattern ...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): B42D15/00B29C43/52
CPCB29C55/005B29K2067/00B29K2105/04B29K2105/16B41M3/14C08L67/02Y10T428/24992G03C1/7954Y10T428/254B42D25/29C08L25/00C08L35/00Y10T428/249978Y10T428/249953Y10T428/31786Y10T428/31855C08J5/18G03C1/795B41M5/41
Inventor GEUENS, INGRIDQUINTENS, DIRK
Owner AGFA GEVAERT AG
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